diff --git a/src/Kconfig b/src/Kconfig
index 6540499..eba78e6 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 mainmenu "coreboot configuration"
 
diff --git a/src/commonlib/storage/Kconfig b/src/commonlib/storage/Kconfig
index 88b8204..3581e2d 100644
--- a/src/commonlib/storage/Kconfig
+++ b/src/commonlib/storage/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config COMMONLIB_STORAGE
 	bool
diff --git a/src/commonlib/storage/Makefile.inc b/src/commonlib/storage/Makefile.inc
index 75b4548..da56354 100644
--- a/src/commonlib/storage/Makefile.inc
+++ b/src/commonlib/storage/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_COMMONLIB_STORAGE),y)
 
diff --git a/src/cpu/amd/agesa/Kconfig b/src/cpu/amd/agesa/Kconfig
index fae2565..b74f1fb 100644
--- a/src/cpu/amd/agesa/Kconfig
+++ b/src/cpu/amd/agesa/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_AGESA
 	bool
diff --git a/src/cpu/amd/agesa/Makefile.inc b/src/cpu/amd/agesa/Makefile.inc
index 4a23ac4..ae3bc9b 100644
--- a/src/cpu/amd/agesa/Makefile.inc
+++ b/src/cpu/amd/agesa/Makefile.inc
@@ -1,15 +1,8 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY14) += family14
 subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY15_TN) += family15tn
 subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY16_KB) += family16kb
diff --git a/src/cpu/amd/agesa/family14/Kconfig b/src/cpu/amd/agesa/family14/Kconfig
index 518235b..cd949fa 100644
--- a/src/cpu/amd/agesa/family14/Kconfig
+++ b/src/cpu/amd/agesa/family14/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_AGESA_FAMILY14
 	bool
diff --git a/src/cpu/amd/agesa/family14/Makefile.inc b/src/cpu/amd/agesa/family14/Makefile.inc
index 1d68113..3aa964c 100644
--- a/src/cpu/amd/agesa/family14/Makefile.inc
+++ b/src/cpu/amd/agesa/family14/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fixme.c
 
diff --git a/src/cpu/amd/agesa/family15tn/Kconfig b/src/cpu/amd/agesa/family15tn/Kconfig
index 93e9ab2..bfe5ef0 100644
--- a/src/cpu/amd/agesa/family15tn/Kconfig
+++ b/src/cpu/amd/agesa/family15tn/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_AGESA_FAMILY15_TN
 	bool
diff --git a/src/cpu/amd/agesa/family15tn/Makefile.inc b/src/cpu/amd/agesa/family15tn/Makefile.inc
index 8522eb2..2099e73 100644
--- a/src/cpu/amd/agesa/family15tn/Makefile.inc
+++ b/src/cpu/amd/agesa/family15tn/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fixme.c
 
diff --git a/src/cpu/amd/agesa/family16kb/Kconfig b/src/cpu/amd/agesa/family16kb/Kconfig
index e87a2d4..eaa7153 100644
--- a/src/cpu/amd/agesa/family16kb/Kconfig
+++ b/src/cpu/amd/agesa/family16kb/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_AGESA_FAMILY16_KB
 	bool
diff --git a/src/cpu/amd/agesa/family16kb/Makefile.inc b/src/cpu/amd/agesa/family16kb/Makefile.inc
index 2ce827d..3c3cb79 100644
--- a/src/cpu/amd/agesa/family16kb/Makefile.inc
+++ b/src/cpu/amd/agesa/family16kb/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fixme.c
 
diff --git a/src/cpu/amd/pi/00630F01/Kconfig b/src/cpu/amd/pi/00630F01/Kconfig
index 37025ab..ac92668 100644
--- a/src/cpu/amd/pi/00630F01/Kconfig
+++ b/src/cpu/amd/pi/00630F01/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_PI_00630F01
 	bool
diff --git a/src/cpu/amd/pi/00630F01/Makefile.inc b/src/cpu/amd/pi/00630F01/Makefile.inc
index 8522eb2..2099e73 100644
--- a/src/cpu/amd/pi/00630F01/Makefile.inc
+++ b/src/cpu/amd/pi/00630F01/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fixme.c
 
diff --git a/src/cpu/amd/pi/00660F01/Kconfig b/src/cpu/amd/pi/00660F01/Kconfig
index 374672d..d812786 100644
--- a/src/cpu/amd/pi/00660F01/Kconfig
+++ b/src/cpu/amd/pi/00660F01/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_PI_00660F01
 	bool
diff --git a/src/cpu/amd/pi/00660F01/Makefile.inc b/src/cpu/amd/pi/00660F01/Makefile.inc
index fbd683c..230d5d1 100644
--- a/src/cpu/amd/pi/00660F01/Makefile.inc
+++ b/src/cpu/amd/pi/00660F01/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fixme.c
 ramstage-y += fixme.c
diff --git a/src/cpu/amd/pi/00730F01/Kconfig b/src/cpu/amd/pi/00730F01/Kconfig
index 7ba4943..2609100 100644
--- a/src/cpu/amd/pi/00730F01/Kconfig
+++ b/src/cpu/amd/pi/00730F01/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_PI_00730F01
 	bool
diff --git a/src/cpu/amd/pi/00730F01/Makefile.inc b/src/cpu/amd/pi/00730F01/Makefile.inc
index c4a92cf..141f96d 100644
--- a/src/cpu/amd/pi/00730F01/Makefile.inc
+++ b/src/cpu/amd/pi/00730F01/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fixme.c
 
diff --git a/src/cpu/amd/pi/Kconfig b/src/cpu/amd/pi/Kconfig
index c534b4d..5fc1a0a 100644
--- a/src/cpu/amd/pi/Kconfig
+++ b/src/cpu/amd/pi/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_AMD_PI
 	bool
diff --git a/src/cpu/amd/pi/Makefile.inc b/src/cpu/amd/pi/Makefile.inc
index 6b6447c..5131bed 100644
--- a/src/cpu/amd/pi/Makefile.inc
+++ b/src/cpu/amd/pi/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_CPU_AMD_PI_00630F01) += 00630F01
 subdirs-$(CONFIG_CPU_AMD_PI_00730F01) += 00730F01
diff --git a/src/cpu/intel/slot_1/Kconfig b/src/cpu/intel/slot_1/Kconfig
index a8d90e8..35b1913 100644
--- a/src/cpu/intel/slot_1/Kconfig
+++ b/src/cpu/intel/slot_1/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_INTEL_SLOT_1
 	bool
diff --git a/src/cpu/qemu-power8/Kconfig b/src/cpu/qemu-power8/Kconfig
index d7f3ae7..50a67d6 100644
--- a/src/cpu/qemu-power8/Kconfig
+++ b/src/cpu/qemu-power8/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_QEMU_POWER8
 	bool
diff --git a/src/cpu/qemu-x86/Kconfig b/src/cpu/qemu-x86/Kconfig
index e6025b5..d1f8f0e 100644
--- a/src/cpu/qemu-x86/Kconfig
+++ b/src/cpu/qemu-x86/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config CPU_QEMU_X86
 	bool
diff --git a/src/cpu/x86/name/Makefile.inc b/src/cpu/x86/name/Makefile.inc
index 02b5863..d81c3f7 100644
--- a/src/cpu/x86/name/Makefile.inc
+++ b/src/cpu/x86/name/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += name.c
 romstage-y += name.c
diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc
index 11a4e67..7a093e6 100644
--- a/src/cpu/x86/smm/Makefile.inc
+++ b/src/cpu/x86/smm/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += smm_module_loader.c
 
diff --git a/src/device/Kconfig b/src/device/Kconfig
index 951062c..97eae50 100644
--- a/src/device/Kconfig
+++ b/src/device/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 menu "Devices"
 
diff --git a/src/device/oprom/Makefile.inc b/src/device/oprom/Makefile.inc
index 64b4b87..63512d0 100644
--- a/src/device/oprom/Makefile.inc
+++ b/src/device/oprom/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_PCI_OPTION_ROM_RUN_YABEL) += x86emu
 subdirs-$(CONFIG_PCI_OPTION_ROM_RUN_YABEL) += yabel
diff --git a/src/device/oprom/realmode/Makefile.inc b/src/device/oprom/realmode/Makefile.inc
index 6f8cde3..e8aeac3 100644
--- a/src/device/oprom/realmode/Makefile.inc
+++ b/src/device/oprom/realmode/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) += x86.c
 ramstage-$(CONFIG_PCI_OPTION_ROM_RUN_REALMODE) += x86_asm.S
diff --git a/src/drivers/amd/agesa/Kconfig b/src/drivers/amd/agesa/Kconfig
index f667b95..9124073 100644
--- a/src/drivers/amd/agesa/Kconfig
+++ b/src/drivers/amd/agesa/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVERS_AMD_PI
 	def_bool n
diff --git a/src/drivers/amd/agesa/Makefile.inc b/src/drivers/amd/agesa/Makefile.inc
index 4536fc9..5fafedc 100644
--- a/src/drivers/amd/agesa/Makefile.inc
+++ b/src/drivers/amd/agesa/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_DRIVERS_AMD_PI),y)
 
diff --git a/src/drivers/analogix/anx7625/Kconfig b/src/drivers/analogix/anx7625/Kconfig
index a172d94..5072a6a 100644
--- a/src/drivers/analogix/anx7625/Kconfig
+++ b/src/drivers/analogix/anx7625/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVER_ANALOGIX_ANX7625
 	bool
diff --git a/src/drivers/analogix/anx7625/Makefile.inc b/src/drivers/analogix/anx7625/Makefile.inc
index 068225a..dca8bc7 100644
--- a/src/drivers/analogix/anx7625/Makefile.inc
+++ b/src/drivers/analogix/anx7625/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVER_ANALOGIX_ANX7625) += anx7625.c
diff --git a/src/drivers/asmedia/Makefile.inc b/src/drivers/asmedia/Makefile.inc
index 5c49b50..0bf3805 100644
--- a/src/drivers/asmedia/Makefile.inc
+++ b/src/drivers/asmedia/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_ASMEDIA_ASPM_BLACKLIST) += aspm_blacklist.c
diff --git a/src/drivers/broadcom/Makefile.inc b/src/drivers/broadcom/Makefile.inc
index 88433d2..79d9d50 100644
--- a/src/drivers/broadcom/Makefile.inc
+++ b/src/drivers/broadcom/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_PCIEXP_ASPM) += bcm57xx_aspm_disable.c
diff --git a/src/drivers/elog/Kconfig b/src/drivers/elog/Kconfig
index ced490e..7e85df9 100644
--- a/src/drivers/elog/Kconfig
+++ b/src/drivers/elog/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config ELOG
 	bool "Support for flash based event log"
diff --git a/src/drivers/generic/gpio_regulator/Kconfig b/src/drivers/generic/gpio_regulator/Kconfig
index 39b77e6..65811f4 100644
--- a/src/drivers/generic/gpio_regulator/Kconfig
+++ b/src/drivers/generic/gpio_regulator/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVERS_GENERIC_GPIO_REGULATOR
 	bool
diff --git a/src/drivers/generic/gpio_regulator/Makefile.inc b/src/drivers/generic/gpio_regulator/Makefile.inc
index db2e9d4..d094c71 100644
--- a/src/drivers/generic/gpio_regulator/Makefile.inc
+++ b/src/drivers/generic/gpio_regulator/Makefile.inc
@@ -1,14 +1,6 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_GENERIC_GPIO_REGULATOR) += gpio_regulator.c
diff --git a/src/drivers/i2c/pcf8523/Kconfig b/src/drivers/i2c/pcf8523/Kconfig
index 3bc95fb..ad49c45 100644
--- a/src/drivers/i2c/pcf8523/Kconfig
+++ b/src/drivers/i2c/pcf8523/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVERS_I2C_PCF8523
 	bool
diff --git a/src/drivers/i2c/pcf8523/Makefile.inc b/src/drivers/i2c/pcf8523/Makefile.inc
index 312b8f6..9b0cd80 100644
--- a/src/drivers/i2c/pcf8523/Makefile.inc
+++ b/src/drivers/i2c/pcf8523/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_I2C_PCF8523) += pcf8523.c
diff --git a/src/drivers/intel/fsp1_1/Kconfig b/src/drivers/intel/fsp1_1/Kconfig
index 304cbae..a8ab3a3 100644
--- a/src/drivers/intel/fsp1_1/Kconfig
+++ b/src/drivers/intel/fsp1_1/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config PLATFORM_USES_FSP1_1
 	bool
diff --git a/src/drivers/intel/fsp1_1/Makefile.inc b/src/drivers/intel/fsp1_1/Makefile.inc
index 7b08fb4..24f689a 100644
--- a/src/drivers/intel/fsp1_1/Makefile.inc
+++ b/src/drivers/intel/fsp1_1/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_PLATFORM_USES_FSP1_1),y)
 
diff --git a/src/drivers/intel/fsp2_0/Kconfig b/src/drivers/intel/fsp2_0/Kconfig
index 27c0803..d9f494d 100644
--- a/src/drivers/intel/fsp2_0/Kconfig
+++ b/src/drivers/intel/fsp2_0/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config PLATFORM_USES_FSP2_0
 	bool
diff --git a/src/drivers/intel/fsp2_0/Makefile.inc b/src/drivers/intel/fsp2_0/Makefile.inc
index 8658062..0032132 100644
--- a/src/drivers/intel/fsp2_0/Makefile.inc
+++ b/src/drivers/intel/fsp2_0/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_PLATFORM_USES_FSP2_0),y)
 
diff --git a/src/drivers/intel/fsp2_0/ppi/Kconfig b/src/drivers/intel/fsp2_0/ppi/Kconfig
index a344fee..14de523 100644
--- a/src/drivers/intel/fsp2_0/ppi/Kconfig
+++ b/src/drivers/intel/fsp2_0/ppi/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config FSP_USES_MP_SERVICES_PPI
 	bool
diff --git a/src/drivers/intel/fsp2_0/ppi/Makefile.inc b/src/drivers/intel/fsp2_0/ppi/Makefile.inc
index a7154c8..790d25d 100644
--- a/src/drivers/intel/fsp2_0/ppi/Makefile.inc
+++ b/src/drivers/intel/fsp2_0/ppi/Makefile.inc
@@ -1,14 +1,6 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_FSP_USES_MP_SERVICES_PPI) += mp_service_ppi.c
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig
index acc25fe..aa7eb58 100644
--- a/src/drivers/intel/gma/Kconfig
+++ b/src/drivers/intel/gma/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config INTEL_DDI
 	bool
diff --git a/src/drivers/intel/gma/Makefile.inc b/src/drivers/intel/gma/Makefile.inc
index 2945d00..3f46417 100644
--- a/src/drivers/intel/gma/Makefile.inc
+++ b/src/drivers/intel/gma/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_INTEL_DDI) += intel_ddi.c
 ramstage-$(CONFIG_INTEL_EDID) += edid.c vbt.c
diff --git a/src/drivers/intel/i210/Makefile.inc b/src/drivers/intel/i210/Makefile.inc
index 336288a..5cd23bf 100644
--- a/src/drivers/intel/i210/Makefile.inc
+++ b/src/drivers/intel/i210/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVER_INTEL_I210)+= i210.c
 
diff --git a/src/drivers/intel/wifi/Makefile.inc b/src/drivers/intel/wifi/Makefile.inc
index c354c0b..a1b512c 100644
--- a/src/drivers/intel/wifi/Makefile.inc
+++ b/src/drivers/intel/wifi/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_INTEL_WIFI) += wifi.c
 
diff --git a/src/drivers/lenovo/hybrid_graphics/Makefile.inc b/src/drivers/lenovo/hybrid_graphics/Makefile.inc
index d9e5079..6b32197 100644
--- a/src/drivers/lenovo/hybrid_graphics/Makefile.inc
+++ b/src/drivers/lenovo/hybrid_graphics/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_LENOVO_HYBRID_GRAPHICS) += hybrid_graphics.c
 romstage-$(CONFIG_DRIVERS_LENOVO_HYBRID_GRAPHICS) += romstage.c
diff --git a/src/drivers/maxim/max77686/Kconfig b/src/drivers/maxim/max77686/Kconfig
index 5517b61..72229b4 100644
--- a/src/drivers/maxim/max77686/Kconfig
+++ b/src/drivers/maxim/max77686/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVER_MAXIM_MAX77686
 	bool
diff --git a/src/drivers/maxim/max77686/Makefile.inc b/src/drivers/maxim/max77686/Makefile.inc
index b857955..6f9ae90 100644
--- a/src/drivers/maxim/max77686/Makefile.inc
+++ b/src/drivers/maxim/max77686/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-$(CONFIG_DRIVER_MAXIM_MAX77686) += max77686.c
 ramstage-$(CONFIG_DRIVER_MAXIM_MAX77686) += max77686.c
diff --git a/src/drivers/parade/ps8625/Kconfig b/src/drivers/parade/ps8625/Kconfig
index f8235e5..7497b81 100644
--- a/src/drivers/parade/ps8625/Kconfig
+++ b/src/drivers/parade/ps8625/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVER_PARADE_PS8625
 	bool
diff --git a/src/drivers/parade/ps8625/Makefile.inc b/src/drivers/parade/ps8625/Makefile.inc
index 9be29f3..4e07ed7 100644
--- a/src/drivers/parade/ps8625/Makefile.inc
+++ b/src/drivers/parade/ps8625/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVER_PARADE_PS8625) += ps8625.c
diff --git a/src/drivers/parade/ps8640/Kconfig b/src/drivers/parade/ps8640/Kconfig
index bb0206a..9ce8794 100644
--- a/src/drivers/parade/ps8640/Kconfig
+++ b/src/drivers/parade/ps8640/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVER_PARADE_PS8640
 	bool
diff --git a/src/drivers/parade/ps8640/Makefile.inc b/src/drivers/parade/ps8640/Makefile.inc
index 1ca394b..140ad15 100644
--- a/src/drivers/parade/ps8640/Makefile.inc
+++ b/src/drivers/parade/ps8640/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVER_PARADE_PS8640) += ps8640.c
diff --git a/src/drivers/pc80/vga/vga.c b/src/drivers/pc80/vga/vga.c
index 20e148b..7bb10cf 100644
--- a/src/drivers/pc80/vga/vga.c
+++ b/src/drivers/pc80/vga/vga.c
@@ -1,15 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <pc80/vga.h>
 #include <pc80/vga_io.h>
diff --git a/src/drivers/pc80/vga/vga_font_8x16.c b/src/drivers/pc80/vga/vga_font_8x16.c
index 2d8e2ca..fc9d77a 100644
--- a/src/drivers/pc80/vga/vga_font_8x16.c
+++ b/src/drivers/pc80/vga/vga_font_8x16.c
@@ -1,15 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "vga.h"
 
diff --git a/src/drivers/pc80/vga/vga_io.c b/src/drivers/pc80/vga/vga_io.c
index 3d76df1..62563dd 100644
--- a/src/drivers/pc80/vga/vga_io.c
+++ b/src/drivers/pc80/vga/vga_io.c
@@ -1,15 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /*
  * All IO necessary to poke VGA registers.
diff --git a/src/drivers/siemens/nc_fpga/Makefile.inc b/src/drivers/siemens/nc_fpga/Makefile.inc
index 572884d..cc338bf 100644
--- a/src/drivers/siemens/nc_fpga/Makefile.inc
+++ b/src/drivers/siemens/nc_fpga/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVER_SIEMENS_NC_FPGA) += nc_fpga.c
diff --git a/src/drivers/smmstore/Kconfig b/src/drivers/smmstore/Kconfig
index bb90809..bbc1723 100644
--- a/src/drivers/smmstore/Kconfig
+++ b/src/drivers/smmstore/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config SMMSTORE
 	bool "Support for flash based, SMM mediated data store"
diff --git a/src/drivers/spi/Kconfig b/src/drivers/spi/Kconfig
index c9d94d9..7be0ae9 100644
--- a/src/drivers/spi/Kconfig
+++ b/src/drivers/spi/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config COMMON_CBFS_SPI_WRAPPER
 	bool
diff --git a/src/drivers/spi/acpi/Kconfig b/src/drivers/spi/acpi/Kconfig
index ca255da..4afc4bc 100644
--- a/src/drivers/spi/acpi/Kconfig
+++ b/src/drivers/spi/acpi/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVERS_SPI_ACPI
 	bool
diff --git a/src/drivers/spi/acpi/Makefile.inc b/src/drivers/spi/acpi/Makefile.inc
index 154d52e..b4fda8c 100644
--- a/src/drivers/spi/acpi/Makefile.inc
+++ b/src/drivers/spi/acpi/Makefile.inc
@@ -1,14 +1,6 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_SPI_ACPI) += acpi.c
diff --git a/src/drivers/ti/tps65090/Kconfig b/src/drivers/ti/tps65090/Kconfig
index 06819d4..ceb55af 100644
--- a/src/drivers/ti/tps65090/Kconfig
+++ b/src/drivers/ti/tps65090/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVER_TI_TPS65090
 	bool
diff --git a/src/drivers/ti/tps65090/Makefile.inc b/src/drivers/ti/tps65090/Makefile.inc
index bfd7ddd..87c690e 100644
--- a/src/drivers/ti/tps65090/Makefile.inc
+++ b/src/drivers/ti/tps65090/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVER_TI_TPS65090) += tps65090.c
diff --git a/src/drivers/ti/tps65913/Kconfig b/src/drivers/ti/tps65913/Kconfig
index 130bebb..0f6a419 100644
--- a/src/drivers/ti/tps65913/Kconfig
+++ b/src/drivers/ti/tps65913/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config DRIVERS_TI_TPS65913_RTC
 	bool
diff --git a/src/drivers/ti/tps65913/Makefile.inc b/src/drivers/ti/tps65913/Makefile.inc
index 55c605a..4244103 100644
--- a/src/drivers/ti/tps65913/Makefile.inc
+++ b/src/drivers/ti/tps65913/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_DRIVERS_TI_TPS65913_RTC) += tps65913rtc.c
diff --git a/src/drivers/vpd/Kconfig b/src/drivers/vpd/Kconfig
index ad3bd72..88a4dcf 100644
--- a/src/drivers/vpd/Kconfig
+++ b/src/drivers/vpd/Kconfig
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config VPD
 	bool "Support for Vital Product Data tables"
diff --git a/src/ec/hp/kbc1126/Kconfig b/src/ec/hp/kbc1126/Kconfig
index c7157fc..0b11dce 100644
--- a/src/ec/hp/kbc1126/Kconfig
+++ b/src/ec/hp/kbc1126/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config EC_HP_KBC1126
 	bool
diff --git a/src/ec/hp/kbc1126/Makefile.inc b/src/ec/hp/kbc1126/Makefile.inc
index bff48cb..fbee1d7 100644
--- a/src/ec/hp/kbc1126/Makefile.inc
+++ b/src/ec/hp/kbc1126/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_EC_HP_KBC1126),y)
 KBC1126_EC_INSERT:=$(top)/util/kbc1126/kbc1126_ec_insert
diff --git a/src/ec/roda/it8518/Kconfig b/src/ec/roda/it8518/Kconfig
index 9376a2a..08c5159 100644
--- a/src/ec/roda/it8518/Kconfig
+++ b/src/ec/roda/it8518/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config EC_RODA_IT8518
 	bool
diff --git a/src/ec/roda/it8518/Makefile.inc b/src/ec/roda/it8518/Makefile.inc
index bafe9d2..04b7267 100644
--- a/src/ec/roda/it8518/Makefile.inc
+++ b/src/ec/roda/it8518/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_EC_RODA_IT8518) += ec.c
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 085f6b2..c03aea1 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 subdirs-y += gnat
 
 ifeq ($(CONFIG_UBSAN),y)
diff --git a/src/lib/gnat/Makefile.inc b/src/lib/gnat/Makefile.inc
index 456cf58..1ea903d 100644
--- a/src/lib/gnat/Makefile.inc
+++ b/src/lib/gnat/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 define libgnat-template
 # $1 arch
diff --git a/src/mainboard/amd/gardenia/Kconfig b/src/mainboard/amd/gardenia/Kconfig
index 76f59ab..9704347 100644
--- a/src/mainboard/amd/gardenia/Kconfig
+++ b/src/mainboard/amd/gardenia/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_GARDENIA
 
diff --git a/src/mainboard/amd/gardenia/Makefile.inc b/src/mainboard/amd/gardenia/Makefile.inc
index 6506e15..81fdbc5 100644
--- a/src/mainboard/amd/gardenia/Makefile.inc
+++ b/src/mainboard/amd/gardenia/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock/bootblock.c
 bootblock-y += bootblock/OemCustomize.c
diff --git a/src/mainboard/amd/gardenia/devicetree.cb b/src/mainboard/amd/gardenia/devicetree.cb
index 3a85c04..e1ecf37 100644
--- a/src/mainboard/amd/gardenia/devicetree.cb
+++ b/src/mainboard/amd/gardenia/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 
 	register "spd_addr_lookup" = "
diff --git a/src/mainboard/amd/inagua/Kconfig b/src/mainboard/amd/inagua/Kconfig
index db66a2f..811df4b 100644
--- a/src/mainboard/amd/inagua/Kconfig
+++ b/src/mainboard/amd/inagua/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_INAGUA
 
diff --git a/src/mainboard/amd/inagua/Makefile.inc b/src/mainboard/amd/inagua/Makefile.inc
index f0a8fe6..ae80f5d 100644
--- a/src/mainboard/amd/inagua/Makefile.inc
+++ b/src/mainboard/amd/inagua/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/amd/inagua/cmos.layout b/src/mainboard/amd/inagua/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/amd/inagua/cmos.layout
+++ b/src/mainboard/amd/inagua/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/inagua/devicetree.cb b/src/mainboard/amd/inagua/devicetree.cb
index 3855f99..8fb6b2f 100644
--- a/src/mainboard/amd/inagua/devicetree.cb
+++ b/src/mainboard/amd/inagua/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/amd/olivehill/Kconfig b/src/mainboard/amd/olivehill/Kconfig
index 32af0f6..243af7a 100644
--- a/src/mainboard/amd/olivehill/Kconfig
+++ b/src/mainboard/amd/olivehill/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_OLIVEHILL
 
diff --git a/src/mainboard/amd/olivehill/Makefile.inc b/src/mainboard/amd/olivehill/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/amd/olivehill/Makefile.inc
+++ b/src/mainboard/amd/olivehill/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/amd/olivehill/cmos.layout b/src/mainboard/amd/olivehill/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/amd/olivehill/cmos.layout
+++ b/src/mainboard/amd/olivehill/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/olivehill/devicetree.cb b/src/mainboard/amd/olivehill/devicetree.cb
index 924cb32..b620f2b 100644
--- a/src/mainboard/amd/olivehill/devicetree.cb
+++ b/src/mainboard/amd/olivehill/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/amd/padmelon/Kconfig b/src/mainboard/amd/padmelon/Kconfig
index 300a300..81bb380 100644
--- a/src/mainboard/amd/padmelon/Kconfig
+++ b/src/mainboard/amd/padmelon/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_PADMELON
 
diff --git a/src/mainboard/amd/padmelon/Makefile.inc b/src/mainboard/amd/padmelon/Makefile.inc
index 0561570..4d378c3 100644
--- a/src/mainboard/amd/padmelon/Makefile.inc
+++ b/src/mainboard/amd/padmelon/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock/bootblock.c
 bootblock-y += bootblock/OemCustomize.c
diff --git a/src/mainboard/amd/padmelon/devicetree.cb b/src/mainboard/amd/padmelon/devicetree.cb
index 4306593..01a7a47 100644
--- a/src/mainboard/amd/padmelon/devicetree.cb
+++ b/src/mainboard/amd/padmelon/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 
 	register "spd_addr_lookup" = "
diff --git a/src/mainboard/amd/parmer/Kconfig b/src/mainboard/amd/parmer/Kconfig
index 4d05e76..f8f1086 100644
--- a/src/mainboard/amd/parmer/Kconfig
+++ b/src/mainboard/amd/parmer/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_PARMER
 
diff --git a/src/mainboard/amd/parmer/Makefile.inc b/src/mainboard/amd/parmer/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/amd/parmer/Makefile.inc
+++ b/src/mainboard/amd/parmer/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/amd/parmer/cmos.layout b/src/mainboard/amd/parmer/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/amd/parmer/cmos.layout
+++ b/src/mainboard/amd/parmer/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/parmer/devicetree.cb b/src/mainboard/amd/parmer/devicetree.cb
index a818ac3..0beb0b5 100644
--- a/src/mainboard/amd/parmer/devicetree.cb
+++ b/src/mainboard/amd/parmer/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/amd/persimmon/Kconfig b/src/mainboard/amd/persimmon/Kconfig
index f0ccba83..482cce7 100644
--- a/src/mainboard/amd/persimmon/Kconfig
+++ b/src/mainboard/amd/persimmon/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_PERSIMMON
 
diff --git a/src/mainboard/amd/persimmon/Makefile.inc b/src/mainboard/amd/persimmon/Makefile.inc
index f0a8fe6..ae80f5d 100644
--- a/src/mainboard/amd/persimmon/Makefile.inc
+++ b/src/mainboard/amd/persimmon/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/amd/persimmon/cmos.layout b/src/mainboard/amd/persimmon/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/amd/persimmon/cmos.layout
+++ b/src/mainboard/amd/persimmon/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/persimmon/devicetree.cb b/src/mainboard/amd/persimmon/devicetree.cb
index 7d97d59..59939e8 100644
--- a/src/mainboard/amd/persimmon/devicetree.cb
+++ b/src/mainboard/amd/persimmon/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/amd/south_station/Kconfig b/src/mainboard/amd/south_station/Kconfig
index 070d7b4..445d470 100644
--- a/src/mainboard/amd/south_station/Kconfig
+++ b/src/mainboard/amd/south_station/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_SOUTHSTATION
 
diff --git a/src/mainboard/amd/south_station/Makefile.inc b/src/mainboard/amd/south_station/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/amd/south_station/Makefile.inc
+++ b/src/mainboard/amd/south_station/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/amd/south_station/cmos.layout b/src/mainboard/amd/south_station/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/amd/south_station/cmos.layout
+++ b/src/mainboard/amd/south_station/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/south_station/devicetree.cb b/src/mainboard/amd/south_station/devicetree.cb
index 5b23f78..c122e354 100644
--- a/src/mainboard/amd/south_station/devicetree.cb
+++ b/src/mainboard/amd/south_station/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
         device cpu_cluster 0 on
                 chip cpu/amd/agesa/family14
diff --git a/src/mainboard/amd/thatcher/Kconfig b/src/mainboard/amd/thatcher/Kconfig
index b4b1643..e7d0768 100644
--- a/src/mainboard/amd/thatcher/Kconfig
+++ b/src/mainboard/amd/thatcher/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_THATCHER
 
diff --git a/src/mainboard/amd/thatcher/Makefile.inc b/src/mainboard/amd/thatcher/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/amd/thatcher/Makefile.inc
+++ b/src/mainboard/amd/thatcher/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/amd/thatcher/cmos.layout b/src/mainboard/amd/thatcher/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/amd/thatcher/cmos.layout
+++ b/src/mainboard/amd/thatcher/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/thatcher/devicetree.cb b/src/mainboard/amd/thatcher/devicetree.cb
index 0f5035e..f061890 100644
--- a/src/mainboard/amd/thatcher/devicetree.cb
+++ b/src/mainboard/amd/thatcher/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/amd/union_station/Kconfig b/src/mainboard/amd/union_station/Kconfig
index 626d3af..da5e6f3 100644
--- a/src/mainboard/amd/union_station/Kconfig
+++ b/src/mainboard/amd/union_station/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_AMD_UNIONSTATION
 
diff --git a/src/mainboard/amd/union_station/Makefile.inc b/src/mainboard/amd/union_station/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/amd/union_station/Makefile.inc
+++ b/src/mainboard/amd/union_station/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/amd/union_station/cmos.layout b/src/mainboard/amd/union_station/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/amd/union_station/cmos.layout
+++ b/src/mainboard/amd/union_station/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/amd/union_station/devicetree.cb b/src/mainboard/amd/union_station/devicetree.cb
index 9b8b2ec..352e216 100644
--- a/src/mainboard/amd/union_station/devicetree.cb
+++ b/src/mainboard/amd/union_station/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
         device cpu_cluster 0 on
                 chip cpu/amd/agesa/family14
diff --git a/src/mainboard/aopen/dxplplusu/Makefile.inc b/src/mainboard/aopen/dxplplusu/Makefile.inc
index 0fedf5c..4023e0a 100644
--- a/src/mainboard/aopen/dxplplusu/Makefile.inc
+++ b/src/mainboard/aopen/dxplplusu/Makefile.inc
@@ -1,14 +1,6 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
diff --git a/src/mainboard/aopen/dxplplusu/devicetree.cb b/src/mainboard/aopen/dxplplusu/devicetree.cb
index 8400eee..8dbaea6 100644
--- a/src/mainboard/aopen/dxplplusu/devicetree.cb
+++ b/src/mainboard/aopen/dxplplusu/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/e7505
 
diff --git a/src/mainboard/apple/macbook21/cmos.layout b/src/mainboard/apple/macbook21/cmos.layout
index 7953d7c..1b433b3 100644
--- a/src/mainboard/apple/macbook21/cmos.layout
+++ b/src/mainboard/apple/macbook21/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/apple/macbook21/devicetree.cb b/src/mainboard/apple/macbook21/devicetree.cb
index f5c25c6..980400c 100644
--- a/src/mainboard/apple/macbook21/devicetree.cb
+++ b/src/mainboard/apple/macbook21/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	# IGD Displays
diff --git a/src/mainboard/apple/macbookair4_2/cmos.layout b/src/mainboard/apple/macbookair4_2/cmos.layout
index 4f5df93..b140dad 100644
--- a/src/mainboard/apple/macbookair4_2/cmos.layout
+++ b/src/mainboard/apple/macbookair4_2/cmos.layout
@@ -1,15 +1,8 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 # -----------------------------------------------------------------
 entries
 # -----------------------------------------------------------------
diff --git a/src/mainboard/asrock/Kconfig b/src/mainboard/asrock/Kconfig
index 54922c2..17406e1 100644
--- a/src/mainboard/asrock/Kconfig
+++ b/src/mainboard/asrock/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_ASROCK
 
diff --git a/src/mainboard/asrock/b75pro3-m/Kconfig b/src/mainboard/asrock/b75pro3-m/Kconfig
index e9aa588..e3b8088 100644
--- a/src/mainboard/asrock/b75pro3-m/Kconfig
+++ b/src/mainboard/asrock/b75pro3-m/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASROCK_B75PRO3_M
 
diff --git a/src/mainboard/asrock/b75pro3-m/Makefile.inc b/src/mainboard/asrock/b75pro3-m/Makefile.inc
index 3ed751d..e63bf45 100644
--- a/src/mainboard/asrock/b75pro3-m/Makefile.inc
+++ b/src/mainboard/asrock/b75pro3-m/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 romstage-y += gpio.c
diff --git a/src/mainboard/asrock/b85m_pro4/cmos.layout b/src/mainboard/asrock/b85m_pro4/cmos.layout
index f9236e1..361ee81 100644
--- a/src/mainboard/asrock/b85m_pro4/cmos.layout
+++ b/src/mainboard/asrock/b85m_pro4/cmos.layout
@@ -4,15 +4,7 @@
 ## Copyright (C) 2007-2008 coresystems GmbH
 ## Copyright (C) 2014 Vladimir Serbinenko
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 	entries
diff --git a/src/mainboard/asrock/e350m1/Kconfig b/src/mainboard/asrock/e350m1/Kconfig
index 29b042b..9e7403b 100644
--- a/src/mainboard/asrock/e350m1/Kconfig
+++ b/src/mainboard/asrock/e350m1/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASROCK_E350M1
 
diff --git a/src/mainboard/asrock/e350m1/Makefile.inc b/src/mainboard/asrock/e350m1/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/asrock/e350m1/Makefile.inc
+++ b/src/mainboard/asrock/e350m1/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/asrock/e350m1/cmos.layout b/src/mainboard/asrock/e350m1/cmos.layout
index c32435c..8cdf7d2 100644
--- a/src/mainboard/asrock/e350m1/cmos.layout
+++ b/src/mainboard/asrock/e350m1/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/asrock/e350m1/devicetree.cb b/src/mainboard/asrock/e350m1/devicetree.cb
index 53aa6e0..052d2c6 100644
--- a/src/mainboard/asrock/e350m1/devicetree.cb
+++ b/src/mainboard/asrock/e350m1/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/asrock/g41c-gs/Kconfig b/src/mainboard/asrock/g41c-gs/Kconfig
index 46e296f..abf22ea 100644
--- a/src/mainboard/asrock/g41c-gs/Kconfig
+++ b/src/mainboard/asrock/g41c-gs/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASROCK_G41C_GS || BOARD_ASROCK_G41C_GS_R2_0 || \
    BOARD_ASROCK_G41M_GS || BOARD_ASROCK_G41M_S3 || \
diff --git a/src/mainboard/asrock/g41c-gs/cmos.layout b/src/mainboard/asrock/g41c-gs/cmos.layout
index bdbf2e1..1fbd128 100644
--- a/src/mainboard/asrock/g41c-gs/cmos.layout
+++ b/src/mainboard/asrock/g41c-gs/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asrock/h110m/Makefile.inc b/src/mainboard/asrock/h110m/Makefile.inc
index def1c7f..ce18330 100644
--- a/src/mainboard/asrock/h110m/Makefile.inc
+++ b/src/mainboard/asrock/h110m/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 bootblock-y += bootblock.c
diff --git a/src/mainboard/asrock/h110m/cmos.layout b/src/mainboard/asrock/h110m/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/asrock/h110m/cmos.layout
+++ b/src/mainboard/asrock/h110m/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asrock/h110m/devicetree.cb b/src/mainboard/asrock/h110m/devicetree.cb
index 6154d2a..a419718 100644
--- a/src/mainboard/asrock/h110m/devicetree.cb
+++ b/src/mainboard/asrock/h110m/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/intel/skylake
 
diff --git a/src/mainboard/asrock/h81m-hds/cmos.layout b/src/mainboard/asrock/h81m-hds/cmos.layout
index 3f62e47..074f402 100644
--- a/src/mainboard/asrock/h81m-hds/cmos.layout
+++ b/src/mainboard/asrock/h81m-hds/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asrock/imb-a180/Kconfig b/src/mainboard/asrock/imb-a180/Kconfig
index cd8330d..4153844 100644
--- a/src/mainboard/asrock/imb-a180/Kconfig
+++ b/src/mainboard/asrock/imb-a180/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASROCK_IMB_A180
 
diff --git a/src/mainboard/asrock/imb-a180/Makefile.inc b/src/mainboard/asrock/imb-a180/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/asrock/imb-a180/Makefile.inc
+++ b/src/mainboard/asrock/imb-a180/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/asrock/imb-a180/cmos.layout b/src/mainboard/asrock/imb-a180/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/asrock/imb-a180/cmos.layout
+++ b/src/mainboard/asrock/imb-a180/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/asrock/imb-a180/devicetree.cb b/src/mainboard/asrock/imb-a180/devicetree.cb
index 9502d2f..4fe874a 100644
--- a/src/mainboard/asrock/imb-a180/devicetree.cb
+++ b/src/mainboard/asrock/imb-a180/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/asus/Kconfig b/src/mainboard/asus/Kconfig
index d079f37..12ab887 100644
--- a/src/mainboard/asus/Kconfig
+++ b/src/mainboard/asus/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_ASUS
 
diff --git a/src/mainboard/asus/am1i-a/Makefile.inc b/src/mainboard/asus/am1i-a/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/asus/am1i-a/Makefile.inc
+++ b/src/mainboard/asus/am1i-a/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/asus/am1i-a/cmos.layout b/src/mainboard/asus/am1i-a/cmos.layout
index 3f685ee..2a6d46c 100644
--- a/src/mainboard/asus/am1i-a/cmos.layout
+++ b/src/mainboard/asus/am1i-a/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/asus/am1i-a/devicetree.cb b/src/mainboard/asus/am1i-a/devicetree.cb
index c28ab5d..9126aa5 100644
--- a/src/mainboard/asus/am1i-a/devicetree.cb
+++ b/src/mainboard/asus/am1i-a/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/asus/f2a85-m/Kconfig b/src/mainboard/asus/f2a85-m/Kconfig
index 9c646cc..ddc8bc3 100644
--- a/src/mainboard/asus/f2a85-m/Kconfig
+++ b/src/mainboard/asus/f2a85-m/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_F2A85_M || BOARD_ASUS_F2A85_M_PRO || BOARD_ASUS_F2A85_M_LE
 
diff --git a/src/mainboard/asus/f2a85-m/Makefile.inc b/src/mainboard/asus/f2a85-m/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/asus/f2a85-m/Makefile.inc
+++ b/src/mainboard/asus/f2a85-m/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/asus/f2a85-m/cmos.layout b/src/mainboard/asus/f2a85-m/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/asus/f2a85-m/cmos.layout
+++ b/src/mainboard/asus/f2a85-m/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/asus/f2a85-m/devicetree_f2a85-m.cb b/src/mainboard/asus/f2a85-m/devicetree_f2a85-m.cb
index f676341..54e3d88 100644
--- a/src/mainboard/asus/f2a85-m/devicetree_f2a85-m.cb
+++ b/src/mainboard/asus/f2a85-m/devicetree_f2a85-m.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_le.cb b/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_le.cb
index 619b503..926e1a0 100644
--- a/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_le.cb
+++ b/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_le.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_pro.cb b/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_pro.cb
index 7681ff4..f6c21ac 100644
--- a/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_pro.cb
+++ b/src/mainboard/asus/f2a85-m/devicetree_f2a85-m_pro.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/asus/h61m-cs/cmos.layout b/src/mainboard/asus/h61m-cs/cmos.layout
index c31d568..331ee90 100644
--- a/src/mainboard/asus/h61m-cs/cmos.layout
+++ b/src/mainboard/asus/h61m-cs/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/maximus_iv_gene-z/cmos.layout b/src/mainboard/asus/maximus_iv_gene-z/cmos.layout
index 6f172ec..b2ac28d 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/cmos.layout
+++ b/src/mainboard/asus/maximus_iv_gene-z/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p2b/Kconfig b/src/mainboard/asus/p2b/Kconfig
index 0bee04f..faa9e0d 100644
--- a/src/mainboard/asus/p2b/Kconfig
+++ b/src/mainboard/asus/p2b/Kconfig
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 if BOARD_ASUS_P2B || BOARD_ASUS_P2B_D || BOARD_ASUS_P2B_DS || BOARD_ASUS_P2B_F || BOARD_ASUS_P2B_LS
 
 config BASE_ASUS_P2B_D
diff --git a/src/mainboard/asus/p3b-f/Kconfig b/src/mainboard/asus/p3b-f/Kconfig
index eee97d5..41989ca 100644
--- a/src/mainboard/asus/p3b-f/Kconfig
+++ b/src/mainboard/asus/p3b-f/Kconfig
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 if BOARD_ASUS_P3B_F
 
 config BOARD_SPECIFIC_OPTIONS
diff --git a/src/mainboard/asus/p5gc-mx/Kconfig b/src/mainboard/asus/p5gc-mx/Kconfig
index 48f6488..173d528 100644
--- a/src/mainboard/asus/p5gc-mx/Kconfig
+++ b/src/mainboard/asus/p5gc-mx/Kconfig
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 if BOARD_ASUS_P5GC_MX
 
 config BOARD_SPECIFIC_OPTIONS
diff --git a/src/mainboard/asus/p5gc-mx/cmos.layout b/src/mainboard/asus/p5gc-mx/cmos.layout
index 6808071..37380d5 100644
--- a/src/mainboard/asus/p5gc-mx/cmos.layout
+++ b/src/mainboard/asus/p5gc-mx/cmos.layout
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p5gc-mx/devicetree.cb b/src/mainboard/asus/p5gc-mx/devicetree.cb
index e61c816..6323df0 100644
--- a/src/mainboard/asus/p5gc-mx/devicetree.cb
+++ b/src/mainboard/asus/p5gc-mx/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 
diff --git a/src/mainboard/asus/p5qc/Kconfig b/src/mainboard/asus/p5qc/Kconfig
index 63f5311..c36201a 100644
--- a/src/mainboard/asus/p5qc/Kconfig
+++ b/src/mainboard/asus/p5qc/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_P5QC || BOARD_ASUS_P5Q_PRO || BOARD_ASUS_P5QL_PRO || BOARD_ASUS_P5Q
 
diff --git a/src/mainboard/asus/p5qc/Makefile.inc b/src/mainboard/asus/p5qc/Makefile.inc
index 88c5720..e1d4dc7 100644
--- a/src/mainboard/asus/p5qc/Makefile.inc
+++ b/src/mainboard/asus/p5qc/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 CONFIG_GPIO_C:=$(call strip_quotes, $(CONFIG_GPIO_C))
 
diff --git a/src/mainboard/asus/p5qc/cmos.layout b/src/mainboard/asus/p5qc/cmos.layout
index 7011166..0c30064 100644
--- a/src/mainboard/asus/p5qc/cmos.layout
+++ b/src/mainboard/asus/p5qc/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p5ql-em/Kconfig b/src/mainboard/asus/p5ql-em/Kconfig
index 403cf55..3d06323 100644
--- a/src/mainboard/asus/p5ql-em/Kconfig
+++ b/src/mainboard/asus/p5ql-em/Kconfig
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_P5QL_EM
 
diff --git a/src/mainboard/asus/p5ql-em/Makefile.inc b/src/mainboard/asus/p5ql-em/Makefile.inc
index ba881b7..4babfc4 100644
--- a/src/mainboard/asus/p5ql-em/Makefile.inc
+++ b/src/mainboard/asus/p5ql-em/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += early_init.c
 
diff --git a/src/mainboard/asus/p5ql-em/cmos.layout b/src/mainboard/asus/p5ql-em/cmos.layout
index 9c707ad..aab610b 100644
--- a/src/mainboard/asus/p5ql-em/cmos.layout
+++ b/src/mainboard/asus/p5ql-em/cmos.layout
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p5qpl-am/Kconfig b/src/mainboard/asus/p5qpl-am/Kconfig
index d2551d8..9e39135 100644
--- a/src/mainboard/asus/p5qpl-am/Kconfig
+++ b/src/mainboard/asus/p5qpl-am/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_P5QPL_AM || BOARD_ASUS_P5G41T_M_LX
 
diff --git a/src/mainboard/asus/p5qpl-am/cmos.layout b/src/mainboard/asus/p5qpl-am/cmos.layout
index ac83eb8..7407228 100644
--- a/src/mainboard/asus/p5qpl-am/cmos.layout
+++ b/src/mainboard/asus/p5qpl-am/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p8h61-m_lx/cmos.layout b/src/mainboard/asus/p8h61-m_lx/cmos.layout
index 5e3fa2e..a7b2888 100644
--- a/src/mainboard/asus/p8h61-m_lx/cmos.layout
+++ b/src/mainboard/asus/p8h61-m_lx/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p8h61-m_pro/Kconfig b/src/mainboard/asus/p8h61-m_pro/Kconfig
index 5b9bbd3..de88e38 100644
--- a/src/mainboard/asus/p8h61-m_pro/Kconfig
+++ b/src/mainboard/asus/p8h61-m_pro/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_P8H61_M_PRO
 
diff --git a/src/mainboard/asus/p8h61-m_pro/cmos.layout b/src/mainboard/asus/p8h61-m_pro/cmos.layout
index c31d568..331ee90 100644
--- a/src/mainboard/asus/p8h61-m_pro/cmos.layout
+++ b/src/mainboard/asus/p8h61-m_pro/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p8h61-m_pro/devicetree.cb b/src/mainboard/asus/p8h61-m_pro/devicetree.cb
index 71f2b41..bc30ed7 100644
--- a/src/mainboard/asus/p8h61-m_pro/devicetree.cb
+++ b/src/mainboard/asus/p8h61-m_pro/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	device cpu_cluster 0x0 on
diff --git a/src/mainboard/asus/p8z77-m_pro/Kconfig b/src/mainboard/asus/p8z77-m_pro/Kconfig
index 0b43154..e65abe5 100644
--- a/src/mainboard/asus/p8z77-m_pro/Kconfig
+++ b/src/mainboard/asus/p8z77-m_pro/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_P8Z77_M_PRO
 
diff --git a/src/mainboard/asus/p8z77-m_pro/Kconfig.name b/src/mainboard/asus/p8z77-m_pro/Kconfig.name
index dc96c85..ecbc636 100644
--- a/src/mainboard/asus/p8z77-m_pro/Kconfig.name
+++ b/src/mainboard/asus/p8z77-m_pro/Kconfig.name
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_ASUS_P8Z77_M_PRO
 	bool "P8Z77-M PRO"
diff --git a/src/mainboard/asus/p8z77-m_pro/cmos.default b/src/mainboard/asus/p8z77-m_pro/cmos.default
index 36946ea..2a18687 100644
--- a/src/mainboard/asus/p8z77-m_pro/cmos.default
+++ b/src/mainboard/asus/p8z77-m_pro/cmos.default
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 boot_option=Fallback
 debug_level=Debug
diff --git a/src/mainboard/asus/p8z77-m_pro/cmos.layout b/src/mainboard/asus/p8z77-m_pro/cmos.layout
index 6b0f13f..7f59b42 100644
--- a/src/mainboard/asus/p8z77-m_pro/cmos.layout
+++ b/src/mainboard/asus/p8z77-m_pro/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/asus/p8z77-m_pro/devicetree.cb b/src/mainboard/asus/p8z77-m_pro/devicetree.cb
index 8a8f375..1a365b13 100644
--- a/src/mainboard/asus/p8z77-m_pro/devicetree.cb
+++ b/src/mainboard/asus/p8z77-m_pro/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	device cpu_cluster 0x0 on
diff --git a/src/mainboard/asus/p8z77-v_lx2/Kconfig b/src/mainboard/asus/p8z77-v_lx2/Kconfig
index bf9cbca..1c5dc78 100644
--- a/src/mainboard/asus/p8z77-v_lx2/Kconfig
+++ b/src/mainboard/asus/p8z77-v_lx2/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ASUS_P8Z77_V_LX2
 
diff --git a/src/mainboard/asus/p8z77-v_lx2/devicetree.cb b/src/mainboard/asus/p8z77-v_lx2/devicetree.cb
index 630b10d..844612a 100644
--- a/src/mainboard/asus/p8z77-v_lx2/devicetree.cb
+++ b/src/mainboard/asus/p8z77-v_lx2/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	device cpu_cluster 0 on
diff --git a/src/mainboard/bap/Kconfig b/src/mainboard/bap/Kconfig
index 234c2c6..884214b 100644
--- a/src/mainboard/bap/Kconfig
+++ b/src/mainboard/bap/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_BAP
 
diff --git a/src/mainboard/bap/ode_e20XX/Kconfig b/src/mainboard/bap/ode_e20XX/Kconfig
index 90f425d..8fe8bf7 100644
--- a/src/mainboard/bap/ode_e20XX/Kconfig
+++ b/src/mainboard/bap/ode_e20XX/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ODE_E20XX
 
diff --git a/src/mainboard/bap/ode_e20XX/Makefile.inc b/src/mainboard/bap/ode_e20XX/Makefile.inc
index 98abec1..f399fcc 100644
--- a/src/mainboard/bap/ode_e20XX/Makefile.inc
+++ b/src/mainboard/bap/ode_e20XX/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/bap/ode_e20XX/cmos.layout b/src/mainboard/bap/ode_e20XX/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/bap/ode_e20XX/cmos.layout
+++ b/src/mainboard/bap/ode_e20XX/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/bap/ode_e20XX/devicetree.cb b/src/mainboard/bap/ode_e20XX/devicetree.cb
index 084e607..3ccdb0c 100644
--- a/src/mainboard/bap/ode_e20XX/devicetree.cb
+++ b/src/mainboard/bap/ode_e20XX/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/bap/ode_e21XX/Kconfig b/src/mainboard/bap/ode_e21XX/Kconfig
index fecceea..5221f9d 100644
--- a/src/mainboard/bap/ode_e21XX/Kconfig
+++ b/src/mainboard/bap/ode_e21XX/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_ODE_E21XX
 	def_bool n
diff --git a/src/mainboard/bap/ode_e21XX/Makefile.inc b/src/mainboard/bap/ode_e21XX/Makefile.inc
index f86d28d..647f939 100644
--- a/src/mainboard/bap/ode_e21XX/Makefile.inc
+++ b/src/mainboard/bap/ode_e21XX/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += BiosCallOuts.c
 romstage-y += OemCustomize.c
diff --git a/src/mainboard/bap/ode_e21XX/cmos.layout b/src/mainboard/bap/ode_e21XX/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/bap/ode_e21XX/cmos.layout
+++ b/src/mainboard/bap/ode_e21XX/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/bap/ode_e21XX/devicetree.cb b/src/mainboard/bap/ode_e21XX/devicetree.cb
index ce7362a..8abc794 100644
--- a/src/mainboard/bap/ode_e21XX/devicetree.cb
+++ b/src/mainboard/bap/ode_e21XX/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/pi/00730F01/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/pi/00730F01
diff --git a/src/mainboard/biostar/Kconfig b/src/mainboard/biostar/Kconfig
index daabb5e..00a4df6 100644
--- a/src/mainboard/biostar/Kconfig
+++ b/src/mainboard/biostar/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_BIOSTAR
 
diff --git a/src/mainboard/biostar/a68n_5200/Kconfig b/src/mainboard/biostar/a68n_5200/Kconfig
index 13206c1..cc5cd8b 100644
--- a/src/mainboard/biostar/a68n_5200/Kconfig
+++ b/src/mainboard/biostar/a68n_5200/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_BIOSTAR_A68N5200
 
diff --git a/src/mainboard/biostar/a68n_5200/Makefile.inc b/src/mainboard/biostar/a68n_5200/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/biostar/a68n_5200/Makefile.inc
+++ b/src/mainboard/biostar/a68n_5200/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/biostar/a68n_5200/cmos.layout b/src/mainboard/biostar/a68n_5200/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/biostar/a68n_5200/cmos.layout
+++ b/src/mainboard/biostar/a68n_5200/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/biostar/a68n_5200/devicetree.cb b/src/mainboard/biostar/a68n_5200/devicetree.cb
index 559a900..5fc9ea7 100644
--- a/src/mainboard/biostar/a68n_5200/devicetree.cb
+++ b/src/mainboard/biostar/a68n_5200/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/biostar/am1ml/Kconfig b/src/mainboard/biostar/am1ml/Kconfig
index b2ef6d5..fd787ff 100644
--- a/src/mainboard/biostar/am1ml/Kconfig
+++ b/src/mainboard/biostar/am1ml/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_BIOSTAR_AM1ML
 
diff --git a/src/mainboard/biostar/am1ml/Makefile.inc b/src/mainboard/biostar/am1ml/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/biostar/am1ml/Makefile.inc
+++ b/src/mainboard/biostar/am1ml/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/biostar/am1ml/cmos.layout b/src/mainboard/biostar/am1ml/cmos.layout
index 0bcd1d0..0a4b491 100644
--- a/src/mainboard/biostar/am1ml/cmos.layout
+++ b/src/mainboard/biostar/am1ml/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/biostar/am1ml/devicetree.cb b/src/mainboard/biostar/am1ml/devicetree.cb
index c07644a..1d6f57a 100644
--- a/src/mainboard/biostar/am1ml/devicetree.cb
+++ b/src/mainboard/biostar/am1ml/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/cavium/Kconfig b/src/mainboard/cavium/Kconfig
index 7843dd1..7ea0313 100644
--- a/src/mainboard/cavium/Kconfig
+++ b/src/mainboard/cavium/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_CAVIUM
 
diff --git a/src/mainboard/cavium/cn8100_sff_evb/Kconfig b/src/mainboard/cavium/cn8100_sff_evb/Kconfig
index adf363e..a1033ec 100644
--- a/src/mainboard/cavium/cn8100_sff_evb/Kconfig
+++ b/src/mainboard/cavium/cn8100_sff_evb/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_CAVIUM_CN8100_SFF_EVB
 
diff --git a/src/mainboard/cavium/cn8100_sff_evb/Makefile.inc b/src/mainboard/cavium/cn8100_sff_evb/Makefile.inc
index b930c30..6bf7a17 100644
--- a/src/mainboard/cavium/cn8100_sff_evb/Makefile.inc
+++ b/src/mainboard/cavium/cn8100_sff_evb/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += memlayout.ld
diff --git a/src/mainboard/cavium/cn8100_sff_evb/devicetree.cb b/src/mainboard/cavium/cn8100_sff_evb/devicetree.cb
index 8305a39..d0e2dfa 100644
--- a/src/mainboard/cavium/cn8100_sff_evb/devicetree.cb
+++ b/src/mainboard/cavium/cn8100_sff_evb/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/cavium/cn81xx
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/compulab/intense_pc/devicetree.cb b/src/mainboard/compulab/intense_pc/devicetree.cb
index 20b8bed..526c37c 100644
--- a/src/mainboard/compulab/intense_pc/devicetree.cb
+++ b/src/mainboard/compulab/intense_pc/devicetree.cb
@@ -1,14 +1,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge # FIXME: check gfx
 	register "gfx" = "GMA_STATIC_DISPLAYS(0)"
diff --git a/src/mainboard/elmex/pcm205400/Kconfig b/src/mainboard/elmex/pcm205400/Kconfig
index 5a0f28f..7f8ddd4 100644
--- a/src/mainboard/elmex/pcm205400/Kconfig
+++ b/src/mainboard/elmex/pcm205400/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ELMEX_PCM205400
 
diff --git a/src/mainboard/elmex/pcm205400/Makefile.inc b/src/mainboard/elmex/pcm205400/Makefile.inc
index f0a8fe6..ae80f5d 100644
--- a/src/mainboard/elmex/pcm205400/Makefile.inc
+++ b/src/mainboard/elmex/pcm205400/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/elmex/pcm205400/cmos.layout b/src/mainboard/elmex/pcm205400/cmos.layout
index abee2f2..43a12c8 100644
--- a/src/mainboard/elmex/pcm205400/cmos.layout
+++ b/src/mainboard/elmex/pcm205400/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/elmex/pcm205400/devicetree.cb b/src/mainboard/elmex/pcm205400/devicetree.cb
index db62099..9e45659 100644
--- a/src/mainboard/elmex/pcm205400/devicetree.cb
+++ b/src/mainboard/elmex/pcm205400/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/elmex/pcm205401/Kconfig b/src/mainboard/elmex/pcm205401/Kconfig
index 510c418..7437aa1 100644
--- a/src/mainboard/elmex/pcm205401/Kconfig
+++ b/src/mainboard/elmex/pcm205401/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_ELMEX_PCM205401
 
diff --git a/src/mainboard/facebook/fbg1701/Kconfig b/src/mainboard/facebook/fbg1701/Kconfig
index 4c177e9..7e2ad87 100644
--- a/src/mainboard/facebook/fbg1701/Kconfig
+++ b/src/mainboard/facebook/fbg1701/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_FACEBOOK_FBG1701
 
diff --git a/src/mainboard/facebook/fbg1701/Makefile.inc b/src/mainboard/facebook/fbg1701/Makefile.inc
index 09142b7..524fb28 100644
--- a/src/mainboard/facebook/fbg1701/Makefile.inc
+++ b/src/mainboard/facebook/fbg1701/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifneq ($(filter y,$(CONFIG_VENDORCODE_ELTAN_VBOOT) $(CONFIG_VENDORCODE_ELTAN_MBOOT)),)
 bootblock-y += board_verified_boot.c
diff --git a/src/mainboard/facebook/fbg1701/cmos.layout b/src/mainboard/facebook/fbg1701/cmos.layout
index e809c23..201a58e 100644
--- a/src/mainboard/facebook/fbg1701/cmos.layout
+++ b/src/mainboard/facebook/fbg1701/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/facebook/monolith/Makefile.inc b/src/mainboard/facebook/monolith/Makefile.inc
index 91867e8..7dbc0d4 100644
--- a/src/mainboard/facebook/monolith/Makefile.inc
+++ b/src/mainboard/facebook/monolith/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/facebook/monolith/cmos.layout b/src/mainboard/facebook/monolith/cmos.layout
index 25ce77a..ede7966 100644
--- a/src/mainboard/facebook/monolith/cmos.layout
+++ b/src/mainboard/facebook/monolith/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/facebook/monolith/spd/Makefile.inc b/src/mainboard/facebook/monolith/spd/Makefile.inc
index b312ae5..bf25f4a1 100644
--- a/src/mainboard/facebook/monolith/spd/Makefile.inc
+++ b/src/mainboard/facebook/monolith/spd/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
diff --git a/src/mainboard/foxconn/Kconfig b/src/mainboard/foxconn/Kconfig
index a18997c..c0f92cb 100644
--- a/src/mainboard/foxconn/Kconfig
+++ b/src/mainboard/foxconn/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_FOXCONN
 
diff --git a/src/mainboard/foxconn/d41s/Kconfig b/src/mainboard/foxconn/d41s/Kconfig
index 4741012..68ec41a 100644
--- a/src/mainboard/foxconn/d41s/Kconfig
+++ b/src/mainboard/foxconn/d41s/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_FOXCONN_D41S
 
diff --git a/src/mainboard/foxconn/d41s/cmos.layout b/src/mainboard/foxconn/d41s/cmos.layout
index 9fb4148..e0495cf 100644
--- a/src/mainboard/foxconn/d41s/cmos.layout
+++ b/src/mainboard/foxconn/d41s/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/foxconn/g41s-k/Kconfig b/src/mainboard/foxconn/g41s-k/Kconfig
index e05d9c3..d71599c 100644
--- a/src/mainboard/foxconn/g41s-k/Kconfig
+++ b/src/mainboard/foxconn/g41s-k/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_FOXCONN_G41S_K || BOARD_FOXCONN_G41M
 
diff --git a/src/mainboard/foxconn/g41s-k/cmos.layout b/src/mainboard/foxconn/g41s-k/cmos.layout
index bdbf2e1..1fbd128 100644
--- a/src/mainboard/foxconn/g41s-k/cmos.layout
+++ b/src/mainboard/foxconn/g41s-k/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/getac/Kconfig b/src/mainboard/getac/Kconfig
index a8e858d..7934c3f 100644
--- a/src/mainboard/getac/Kconfig
+++ b/src/mainboard/getac/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_GETAC
 
diff --git a/src/mainboard/getac/p470/Kconfig b/src/mainboard/getac/p470/Kconfig
index 6bc16cc..c407169 100644
--- a/src/mainboard/getac/p470/Kconfig
+++ b/src/mainboard/getac/p470/Kconfig
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 if BOARD_GETAC_P470
 
 config BOARD_SPECIFIC_OPTIONS
diff --git a/src/mainboard/getac/p470/Makefile.inc b/src/mainboard/getac/p470/Makefile.inc
index 7aaf0d9..11579e9 100644
--- a/src/mainboard/getac/p470/Makefile.inc
+++ b/src/mainboard/getac/p470/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += cstates.c
 romstage-y += gpio.c
diff --git a/src/mainboard/getac/p470/cmos.layout b/src/mainboard/getac/p470/cmos.layout
index 6a155ac..2fc06bb 100644
--- a/src/mainboard/getac/p470/cmos.layout
+++ b/src/mainboard/getac/p470/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/getac/p470/devicetree.cb b/src/mainboard/getac/p470/devicetree.cb
index 248ce60..e366287 100644
--- a/src/mainboard/getac/p470/devicetree.cb
+++ b/src/mainboard/getac/p470/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	# IGD Displays
diff --git a/src/mainboard/gigabyte/Kconfig b/src/mainboard/gigabyte/Kconfig
index 8863184..051af38 100644
--- a/src/mainboard/gigabyte/Kconfig
+++ b/src/mainboard/gigabyte/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_GIGABYTE
 
diff --git a/src/mainboard/gigabyte/ga-945gcm-s2l/Kconfig b/src/mainboard/gigabyte/ga-945gcm-s2l/Kconfig
index b37f774..f453b2a 100644
--- a/src/mainboard/gigabyte/ga-945gcm-s2l/Kconfig
+++ b/src/mainboard/gigabyte/ga-945gcm-s2l/Kconfig
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 if BOARD_GIGABYTE_GA_945GCM_S2L || BOARD_GIGABYTE_GA_945GCM_S2C
 
 config BOARD_SPECIFIC_OPTIONS
diff --git a/src/mainboard/gigabyte/ga-945gcm-s2l/cmos.layout b/src/mainboard/gigabyte/ga-945gcm-s2l/cmos.layout
index e5677fd..c2a0197 100644
--- a/src/mainboard/gigabyte/ga-945gcm-s2l/cmos.layout
+++ b/src/mainboard/gigabyte/ga-945gcm-s2l/cmos.layout
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/gigabyte/ga-945gcm-s2l/devicetree.cb b/src/mainboard/gigabyte/ga-945gcm-s2l/devicetree.cb
index c2f42d2..d2d5e49 100644
--- a/src/mainboard/gigabyte/ga-945gcm-s2l/devicetree.cb
+++ b/src/mainboard/gigabyte/ga-945gcm-s2l/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/Makefile.inc b/src/mainboard/gigabyte/ga-b75m-d3h/Makefile.inc
index fe6210f..733d751 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/Makefile.inc
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += variants/$(VARIANT_DIR)/gpio.c
 romstage-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/cmos.layout b/src/mainboard/gigabyte/ga-b75m-d3h/cmos.layout
index c31d568..331ee90 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/cmos.layout
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/Kconfig b/src/mainboard/gigabyte/ga-g41m-es2l/Kconfig
index 5157ff0..cd2a689 100644
--- a/src/mainboard/gigabyte/ga-g41m-es2l/Kconfig
+++ b/src/mainboard/gigabyte/ga-g41m-es2l/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GIGABYTE_GA_G41M_ES2L
 
diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/cmos.layout b/src/mainboard/gigabyte/ga-g41m-es2l/cmos.layout
index bc987e3..4887e76 100644
--- a/src/mainboard/gigabyte/ga-g41m-es2l/cmos.layout
+++ b/src/mainboard/gigabyte/ga-g41m-es2l/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/gigabyte/ga-h61m-series/Kconfig b/src/mainboard/gigabyte/ga-h61m-series/Kconfig
index a005009..267e497 100644
--- a/src/mainboard/gigabyte/ga-h61m-series/Kconfig
+++ b/src/mainboard/gigabyte/ga-h61m-series/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GIGABYTE_GA_H61M_S2PV || BOARD_GIGABYTE_GA_H61M_DS2V || BOARD_GIGABYTE_GA_H61MA_D3V
 
diff --git a/src/mainboard/gigabyte/ga-h61m-series/cmos.layout b/src/mainboard/gigabyte/ga-h61m-series/cmos.layout
index c31d568..331ee90 100644
--- a/src/mainboard/gigabyte/ga-h61m-series/cmos.layout
+++ b/src/mainboard/gigabyte/ga-h61m-series/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/gizmosphere/Kconfig b/src/mainboard/gizmosphere/Kconfig
index f9c6620..7206221 100644
--- a/src/mainboard/gizmosphere/Kconfig
+++ b/src/mainboard/gizmosphere/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_GIZMOSPHERE
 
diff --git a/src/mainboard/gizmosphere/gizmo/Kconfig b/src/mainboard/gizmosphere/gizmo/Kconfig
index f8a9a16..e9dd4e3 100644
--- a/src/mainboard/gizmosphere/gizmo/Kconfig
+++ b/src/mainboard/gizmosphere/gizmo/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GIZMOSPHERE_GIZMO
 
diff --git a/src/mainboard/gizmosphere/gizmo/Makefile.inc b/src/mainboard/gizmosphere/gizmo/Makefile.inc
index 8264df8..5ed4d88 100644
--- a/src/mainboard/gizmosphere/gizmo/Makefile.inc
+++ b/src/mainboard/gizmosphere/gizmo/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/gizmosphere/gizmo/cmos.layout b/src/mainboard/gizmosphere/gizmo/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/gizmosphere/gizmo/cmos.layout
+++ b/src/mainboard/gizmosphere/gizmo/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/gizmosphere/gizmo/devicetree.cb b/src/mainboard/gizmosphere/gizmo/devicetree.cb
index 3cf6ed3..0623773 100644
--- a/src/mainboard/gizmosphere/gizmo/devicetree.cb
+++ b/src/mainboard/gizmosphere/gizmo/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 			chip cpu/amd/agesa/family14
diff --git a/src/mainboard/gizmosphere/gizmo2/Kconfig b/src/mainboard/gizmosphere/gizmo2/Kconfig
index 07da78c..cc37eb4b 100644
--- a/src/mainboard/gizmosphere/gizmo2/Kconfig
+++ b/src/mainboard/gizmosphere/gizmo2/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GIZMOSPHERE_GIZMO2
 
diff --git a/src/mainboard/gizmosphere/gizmo2/Makefile.inc b/src/mainboard/gizmosphere/gizmo2/Makefile.inc
index c7f7be7..7135b88 100644
--- a/src/mainboard/gizmosphere/gizmo2/Makefile.inc
+++ b/src/mainboard/gizmosphere/gizmo2/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/gizmosphere/gizmo2/cmos.layout b/src/mainboard/gizmosphere/gizmo2/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/gizmosphere/gizmo2/cmos.layout
+++ b/src/mainboard/gizmosphere/gizmo2/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/gizmosphere/gizmo2/devicetree.cb b/src/mainboard/gizmosphere/gizmo2/devicetree.cb
index 8714b48..67264ea 100644
--- a/src/mainboard/gizmosphere/gizmo2/devicetree.cb
+++ b/src/mainboard/gizmosphere/gizmo2/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/google/Kconfig b/src/mainboard/google/Kconfig
index 475668d..d5345a4 100644
--- a/src/mainboard/google/Kconfig
+++ b/src/mainboard/google/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_GOOGLE
 
diff --git a/src/mainboard/google/auron/Makefile.inc b/src/mainboard/google/auron/Makefile.inc
index 2fbfe30..93e20a3 100644
--- a/src/mainboard/google/auron/Makefile.inc
+++ b/src/mainboard/google/auron/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC) += ec.c
 
diff --git a/src/mainboard/google/auron/cmos.layout b/src/mainboard/google/auron/cmos.layout
index 014f442..6e04c5b 100644
--- a/src/mainboard/google/auron/cmos.layout
+++ b/src/mainboard/google/auron/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/auron/variants/auron_paine/spd/Makefile.inc b/src/mainboard/google/auron/variants/auron_paine/spd/Makefile.inc
index 9e2c76a..c797c58 100644
--- a/src/mainboard/google/auron/variants/auron_paine/spd/Makefile.inc
+++ b/src/mainboard/google/auron/variants/auron_paine/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/google/auron/variants/auron_yuna/spd/Makefile.inc b/src/mainboard/google/auron/variants/auron_yuna/spd/Makefile.inc
index 9e2c76a..c797c58 100644
--- a/src/mainboard/google/auron/variants/auron_yuna/spd/Makefile.inc
+++ b/src/mainboard/google/auron/variants/auron_yuna/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc b/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
index cc9726f..e3b4cfd 100644
--- a/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
+++ b/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
diff --git a/src/mainboard/google/auron/variants/gandof/spd/Makefile.inc b/src/mainboard/google/auron/variants/gandof/spd/Makefile.inc
index 8b38781..2bfc42f 100644
--- a/src/mainboard/google/auron/variants/gandof/spd/Makefile.inc
+++ b/src/mainboard/google/auron/variants/gandof/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/google/auron/variants/lulu/spd/Makefile.inc b/src/mainboard/google/auron/variants/lulu/spd/Makefile.inc
index b29e876..9c824e6 100644
--- a/src/mainboard/google/auron/variants/lulu/spd/Makefile.inc
+++ b/src/mainboard/google/auron/variants/lulu/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/google/auron/variants/samus/Makefile.inc b/src/mainboard/google/auron/variants/samus/Makefile.inc
index 6e776ff..6704fe3 100644
--- a/src/mainboard/google/auron/variants/samus/Makefile.inc
+++ b/src/mainboard/google/auron/variants/samus/Makefile.inc
@@ -1,15 +1,7 @@
 ##
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += board_version.c
 ramstage-y += board_version.c
diff --git a/src/mainboard/google/auron/variants/samus/spd/Makefile.inc b/src/mainboard/google/auron/variants/samus/spd/Makefile.inc
index f57e9e7..60c822b 100644
--- a/src/mainboard/google/auron/variants/samus/spd/Makefile.inc
+++ b/src/mainboard/google/auron/variants/samus/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/google/beltino/Makefile.inc b/src/mainboard/google/beltino/Makefile.inc
index bb9bf7f..190840e 100644
--- a/src/mainboard/google/beltino/Makefile.inc
+++ b/src/mainboard/google/beltino/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-$(CONFIG_CHROMEOS) += chromeos.c
 ramstage-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/beltino/cmos.layout b/src/mainboard/google/beltino/cmos.layout
index 014f442..6e04c5b 100644
--- a/src/mainboard/google/beltino/cmos.layout
+++ b/src/mainboard/google/beltino/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/butterfly/Makefile.inc b/src/mainboard/google/butterfly/Makefile.inc
index 202cb38..a34a715 100644
--- a/src/mainboard/google/butterfly/Makefile.inc
+++ b/src/mainboard/google/butterfly/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += ec.c
 
diff --git a/src/mainboard/google/butterfly/cmos.layout b/src/mainboard/google/butterfly/cmos.layout
index 8bafde2..99844b3 100644
--- a/src/mainboard/google/butterfly/cmos.layout
+++ b/src/mainboard/google/butterfly/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/cheza/Makefile.inc b/src/mainboard/google/cheza/Makefile.inc
index 8c621a1..e1f6aea 100644
--- a/src/mainboard/google/cheza/Makefile.inc
+++ b/src/mainboard/google/cheza/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += boardid.c
 bootblock-y += memlayout.ld
diff --git a/src/mainboard/google/cyan/Makefile.inc b/src/mainboard/google/cyan/Makefile.inc
index d9b15c7..014b422 100644
--- a/src/mainboard/google/cyan/Makefile.inc
+++ b/src/mainboard/google/cyan/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-$(CONFIG_ENABLE_BUILTIN_COM1) += com_init.c
 
diff --git a/src/mainboard/google/cyan/cmos.layout b/src/mainboard/google/cyan/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/google/cyan/cmos.layout
+++ b/src/mainboard/google/cyan/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/cyan/variants/banon/Makefile.inc b/src/mainboard/google/cyan/variants/banon/Makefile.inc
index 273895f..1d62f53 100644
--- a/src/mainboard/google/cyan/variants/banon/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/banon/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/celes/Makefile.inc b/src/mainboard/google/cyan/variants/celes/Makefile.inc
index 8396474..ab337db 100644
--- a/src/mainboard/google/cyan/variants/celes/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/celes/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/google/cyan/variants/cyan/Makefile.inc b/src/mainboard/google/cyan/variants/cyan/Makefile.inc
index da6f751..f6beccc 100644
--- a/src/mainboard/google/cyan/variants/cyan/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/cyan/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/google/cyan/variants/edgar/Makefile.inc b/src/mainboard/google/cyan/variants/edgar/Makefile.inc
index 5c80941..aea3566 100644
--- a/src/mainboard/google/cyan/variants/edgar/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/edgar/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/kefka/Makefile.inc b/src/mainboard/google/cyan/variants/kefka/Makefile.inc
index 9153eb4..7de96cf 100644
--- a/src/mainboard/google/cyan/variants/kefka/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/kefka/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/reks/Makefile.inc b/src/mainboard/google/cyan/variants/reks/Makefile.inc
index 42097b0..3f07ef6 100644
--- a/src/mainboard/google/cyan/variants/reks/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/reks/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/relm/Makefile.inc b/src/mainboard/google/cyan/variants/relm/Makefile.inc
index 199295d..52dbe95 100644
--- a/src/mainboard/google/cyan/variants/relm/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/relm/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/setzer/Makefile.inc b/src/mainboard/google/cyan/variants/setzer/Makefile.inc
index 66b666c..cc95d87 100644
--- a/src/mainboard/google/cyan/variants/setzer/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/setzer/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/terra/Makefile.inc b/src/mainboard/google/cyan/variants/terra/Makefile.inc
index 23a7c41..f00a495 100644
--- a/src/mainboard/google/cyan/variants/terra/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/terra/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += romstage.c
 romstage-y += spd_util.c
diff --git a/src/mainboard/google/cyan/variants/ultima/Makefile.inc b/src/mainboard/google/cyan/variants/ultima/Makefile.inc
index 19acf48..4ba464b 100644
--- a/src/mainboard/google/cyan/variants/ultima/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/ultima/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/google/cyan/variants/wizpig/Makefile.inc b/src/mainboard/google/cyan/variants/wizpig/Makefile.inc
index 5ba9b84..f7c614b 100644
--- a/src/mainboard/google/cyan/variants/wizpig/Makefile.inc
+++ b/src/mainboard/google/cyan/variants/wizpig/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/google/daisy/Kconfig b/src/mainboard/google/daisy/Kconfig
index dc54f91..2b81959 100644
--- a/src/mainboard/google/daisy/Kconfig
+++ b/src/mainboard/google/daisy/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_DAISY
 
diff --git a/src/mainboard/google/daisy/Makefile.inc b/src/mainboard/google/daisy/Makefile.inc
index fd76686..32046b1 100644
--- a/src/mainboard/google/daisy/Makefile.inc
+++ b/src/mainboard/google/daisy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += wakeup.c
 
diff --git a/src/mainboard/google/daisy/devicetree.cb b/src/mainboard/google/daisy/devicetree.cb
index aeb2fc8..90b0764 100644
--- a/src/mainboard/google/daisy/devicetree.cb
+++ b/src/mainboard/google/daisy/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/samsung/exynos5250
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/dragonegg/Makefile.inc b/src/mainboard/google/dragonegg/Makefile.inc
index 7773477..da0ea06 100644
--- a/src/mainboard/google/dragonegg/Makefile.inc
+++ b/src/mainboard/google/dragonegg/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/dragonegg/spd/Makefile.inc b/src/mainboard/google/dragonegg/spd/Makefile.inc
index 7aaf00d..2238237 100644
--- a/src/mainboard/google/dragonegg/spd/Makefile.inc
+++ b/src/mainboard/google/dragonegg/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/dragonegg/variants/baseboard/Makefile.inc b/src/mainboard/google/dragonegg/variants/baseboard/Makefile.inc
index 7a3ce63..c0fea91 100644
--- a/src/mainboard/google/dragonegg/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/dragonegg/variants/baseboard/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 
diff --git a/src/mainboard/google/drallion/Makefile.inc b/src/mainboard/google/drallion/Makefile.inc
index d45b53a..3b76abd 100644
--- a/src/mainboard/google/drallion/Makefile.inc
+++ b/src/mainboard/google/drallion/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/google/drallion/spd/Makefile.inc b/src/mainboard/google/drallion/spd/Makefile.inc
index 4b40076..b901fa5 100644
--- a/src/mainboard/google/drallion/spd/Makefile.inc
+++ b/src/mainboard/google/drallion/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/drallion/variants/drallion/Makefile.inc b/src/mainboard/google/drallion/variants/drallion/Makefile.inc
index 8c9fc57..4716a6f 100644
--- a/src/mainboard/google/drallion/variants/drallion/Makefile.inc
+++ b/src/mainboard/google/drallion/variants/drallion/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ## GPP_F12-F16 indicates mem_id to match specific spd file
 SPD_SOURCES = empty_ddr4	# 0b00000
diff --git a/src/mainboard/google/eve/Makefile.inc b/src/mainboard/google/eve/Makefile.inc
index f9be75a..b3a874b 100644
--- a/src/mainboard/google/eve/Makefile.inc
+++ b/src/mainboard/google/eve/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/google/eve/spd/Makefile.inc b/src/mainboard/google/eve/spd/Makefile.inc
index de94ad1..d681652 100644
--- a/src/mainboard/google/eve/spd/Makefile.inc
+++ b/src/mainboard/google/eve/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/google/fizz/Makefile.inc b/src/mainboard/google/fizz/Makefile.inc
index 05557a6..97b4109 100644
--- a/src/mainboard/google/fizz/Makefile.inc
+++ b/src/mainboard/google/fizz/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/foster/Kconfig b/src/mainboard/google/foster/Kconfig
index efa9a4b..ebd3899 100644
--- a/src/mainboard/google/foster/Kconfig
+++ b/src/mainboard/google/foster/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_FOSTER
 
diff --git a/src/mainboard/google/foster/Makefile.inc b/src/mainboard/google/foster/Makefile.inc
index 342cd17..a7eebc92 100644
--- a/src/mainboard/google/foster/Makefile.inc
+++ b/src/mainboard/google/foster/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # Add a handler for BCT config files
 $(call add-special-class,bct-cfg)
diff --git a/src/mainboard/google/foster/bct/Makefile.inc b/src/mainboard/google/foster/bct/Makefile.inc
index 463eece..176999d 100644
--- a/src/mainboard/google/foster/bct/Makefile.inc
+++ b/src/mainboard/google/foster/bct/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bct-cfg-$(CONFIG_FOSTER_BCT_CFG_EMMC) += emmc.cfg
 bct-cfg-$(CONFIG_FOSTER_BCT_CFG_SPI) += spi.cfg
diff --git a/src/mainboard/google/foster/bct/cfg2inc.sh b/src/mainboard/google/foster/bct/cfg2inc.sh
index d7b6c46..30e24c0 100644
--- a/src/mainboard/google/foster/bct/cfg2inc.sh
+++ b/src/mainboard/google/foster/bct/cfg2inc.sh
@@ -3,14 +3,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 bct_cfg2inc() {
 	local in_file="$1"
diff --git a/src/mainboard/google/foster/devicetree.cb b/src/mainboard/google/foster/devicetree.cb
index 33088dc..6dcef65 100644
--- a/src/mainboard/google/foster/devicetree.cb
+++ b/src/mainboard/google/foster/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/nvidia/tegra210
 	device cpu_cluster 0 on
diff --git a/src/mainboard/google/gale/Kconfig b/src/mainboard/google/gale/Kconfig
index 4f0d1ff..e0100ca 100644
--- a/src/mainboard/google/gale/Kconfig
+++ b/src/mainboard/google/gale/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_GALE
 
diff --git a/src/mainboard/google/gale/Makefile.inc b/src/mainboard/google/gale/Makefile.inc
index fea77d2..5e6f33c 100644
--- a/src/mainboard/google/gale/Makefile.inc
+++ b/src/mainboard/google/gale/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += cdp.c
diff --git a/src/mainboard/google/gale/devicetree.cb b/src/mainboard/google/gale/devicetree.cb
index 92fdb4d..b20d8dc 100644
--- a/src/mainboard/google/gale/devicetree.cb
+++ b/src/mainboard/google/gale/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/qualcomm/ipq40xx
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/glados/Makefile.inc b/src/mainboard/google/glados/Makefile.inc
index 371efaf..054217e 100644
--- a/src/mainboard/google/glados/Makefile.inc
+++ b/src/mainboard/google/glados/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/google/glados/cmos.layout b/src/mainboard/google/glados/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/google/glados/cmos.layout
+++ b/src/mainboard/google/glados/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/glados/variants/asuka/Makefile.inc b/src/mainboard/google/glados/variants/asuka/Makefile.inc
index a88ed7d..3f15bda 100644
--- a/src/mainboard/google/glados/variants/asuka/Makefile.inc
+++ b/src/mainboard/google/glados/variants/asuka/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/glados/variants/caroline/Makefile.inc b/src/mainboard/google/glados/variants/caroline/Makefile.inc
index eaa316e..fa2aa30 100644
--- a/src/mainboard/google/glados/variants/caroline/Makefile.inc
+++ b/src/mainboard/google/glados/variants/caroline/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/glados/variants/cave/Makefile.inc b/src/mainboard/google/glados/variants/cave/Makefile.inc
index 65ae1b7d..87a85cd 100644
--- a/src/mainboard/google/glados/variants/cave/Makefile.inc
+++ b/src/mainboard/google/glados/variants/cave/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/glados/variants/chell/Makefile.inc b/src/mainboard/google/glados/variants/chell/Makefile.inc
index 1f3fade..71623bc 100644
--- a/src/mainboard/google/glados/variants/chell/Makefile.inc
+++ b/src/mainboard/google/glados/variants/chell/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/glados/variants/glados/Makefile.inc b/src/mainboard/google/glados/variants/glados/Makefile.inc
index 8d7111d..5f84742 100644
--- a/src/mainboard/google/glados/variants/glados/Makefile.inc
+++ b/src/mainboard/google/glados/variants/glados/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/glados/variants/lars/Makefile.inc b/src/mainboard/google/glados/variants/lars/Makefile.inc
index 2772dd0..421d068 100644
--- a/src/mainboard/google/glados/variants/lars/Makefile.inc
+++ b/src/mainboard/google/glados/variants/lars/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/glados/variants/sentry/Makefile.inc b/src/mainboard/google/glados/variants/sentry/Makefile.inc
index 778143f..4bfdd9a 100644
--- a/src/mainboard/google/glados/variants/sentry/Makefile.inc
+++ b/src/mainboard/google/glados/variants/sentry/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += variant.c
 ramstage-y += variant.c
diff --git a/src/mainboard/google/gru/Kconfig b/src/mainboard/google/gru/Kconfig
index 819c448..98eaa02 100644
--- a/src/mainboard/google/gru/Kconfig
+++ b/src/mainboard/google/gru/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_GOOGLE_GRU_COMMON  # Umbrella option to be selected by variant boards.
 	def_bool n
diff --git a/src/mainboard/google/gru/Makefile.inc b/src/mainboard/google/gru/Makefile.inc
index 2526445..1734597 100644
--- a/src/mainboard/google/gru/Makefile.inc
+++ b/src/mainboard/google/gru/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += sdram_params/
 
diff --git a/src/mainboard/google/gru/devicetree.cb b/src/mainboard/google/gru/devicetree.cb
index 8da218e..7142ebd 100644
--- a/src/mainboard/google/gru/devicetree.cb
+++ b/src/mainboard/google/gru/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/rockchip/rk3399
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/gru/devicetree.scarlet.cb b/src/mainboard/google/gru/devicetree.scarlet.cb
index 601af69..3910a08 100644
--- a/src/mainboard/google/gru/devicetree.scarlet.cb
+++ b/src/mainboard/google/gru/devicetree.scarlet.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/rockchip/rk3399
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/gru/sdram_params/Makefile.inc b/src/mainboard/google/gru/sdram_params/Makefile.inc
index f01f354..43fa7dd 100644
--- a/src/mainboard/google/gru/sdram_params/Makefile.inc
+++ b/src/mainboard/google/gru/sdram_params/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 sdram-params :=
 sdram-params += sdram-lpddr3-generic-4GB-928
diff --git a/src/mainboard/google/hatch/Makefile.inc b/src/mainboard/google/hatch/Makefile.inc
index b430fa7..36ddea3 100644
--- a/src/mainboard/google/hatch/Makefile.inc
+++ b/src/mainboard/google/hatch/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/hatch/spd/Makefile.inc b/src/mainboard/google/hatch/spd/Makefile.inc
index b67438b..4d7bd8e 100644
--- a/src/mainboard/google/hatch/spd/Makefile.inc
+++ b/src/mainboard/google/hatch/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifneq ($(SPD_SOURCES),)
 SPD_BIN = $(obj)/spd.bin
diff --git a/src/mainboard/google/hatch/variants/akemi/Makefile.inc b/src/mainboard/google/hatch/variants/akemi/Makefile.inc
index 103d9e1..9677982 100644
--- a/src/mainboard/google/hatch/variants/akemi/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/akemi/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400		# 0b000
 SPD_SOURCES += empty_ddr4	# 0b001
diff --git a/src/mainboard/google/hatch/variants/baseboard/Makefile.inc b/src/mainboard/google/hatch/variants/baseboard/Makefile.inc
index 13c45cb..0a81fec 100644
--- a/src/mainboard/google/hatch/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/baseboard/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 
diff --git a/src/mainboard/google/hatch/variants/dratini/Makefile.inc b/src/mainboard/google/hatch/variants/dratini/Makefile.inc
index ada9a96..8b9fa28 100644
--- a/src/mainboard/google/hatch/variants/dratini/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/dratini/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400         # 0b0000
 SPD_SOURCES += empty_ddr4     # 0b0001
diff --git a/src/mainboard/google/hatch/variants/duffy/Makefile.inc b/src/mainboard/google/hatch/variants/duffy/Makefile.inc
index 8cbad31..c17467c 100644
--- a/src/mainboard/google/hatch/variants/duffy/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/duffy/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += gpio.c
 ramstage-y += mainboard.c
diff --git a/src/mainboard/google/hatch/variants/hatch/Makefile.inc b/src/mainboard/google/hatch/variants/hatch/Makefile.inc
index 77cb535..61d3614 100644
--- a/src/mainboard/google/hatch/variants/hatch/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/hatch/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400		# 0b000
 SPD_SOURCES += empty_ddr4	# 0b001
diff --git a/src/mainboard/google/hatch/variants/helios/Makefile.inc b/src/mainboard/google/hatch/variants/helios/Makefile.inc
index acf6a75..40e7a7a 100644
--- a/src/mainboard/google/hatch/variants/helios/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/helios/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = LP_8G_2133		# 0b0000
 SPD_SOURCES += LP_16G_2133		# 0b0001
diff --git a/src/mainboard/google/hatch/variants/jinlon/Makefile.inc b/src/mainboard/google/hatch/variants/jinlon/Makefile.inc
index 0803710..fc60621 100644
--- a/src/mainboard/google/hatch/variants/jinlon/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/jinlon/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400         # 0b000
 SPD_SOURCES += empty_ddr4     # 0b001
diff --git a/src/mainboard/google/hatch/variants/kaisa/Makefile.inc b/src/mainboard/google/hatch/variants/kaisa/Makefile.inc
index 8cbad31..c17467c 100644
--- a/src/mainboard/google/hatch/variants/kaisa/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/kaisa/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += gpio.c
 ramstage-y += mainboard.c
diff --git a/src/mainboard/google/hatch/variants/kindred/Makefile.inc b/src/mainboard/google/hatch/variants/kindred/Makefile.inc
index 6f8d94b..1dea9de 100644
--- a/src/mainboard/google/hatch/variants/kindred/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/kindred/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400   # 0b000
 SPD_SOURCES += empty_ddr4 # 0b001
diff --git a/src/mainboard/google/hatch/variants/kohaku/Makefile.inc b/src/mainboard/google/hatch/variants/kohaku/Makefile.inc
index ea2a901..0f8b72b 100644
--- a/src/mainboard/google/hatch/variants/kohaku/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/kohaku/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = LP_8G_2133		# 0b000
 SPD_SOURCES += LP_16G_2133		# 0b001
diff --git a/src/mainboard/google/hatch/variants/mushu/Makefile.inc b/src/mainboard/google/hatch/variants/mushu/Makefile.inc
index 77cb535..61d3614 100644
--- a/src/mainboard/google/hatch/variants/mushu/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/mushu/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400		# 0b000
 SPD_SOURCES += empty_ddr4	# 0b001
diff --git a/src/mainboard/google/hatch/variants/nightfury/Makefile.inc b/src/mainboard/google/hatch/variants/nightfury/Makefile.inc
index f44654a..f8ee7bc 100644
--- a/src/mainboard/google/hatch/variants/nightfury/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/nightfury/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = LP_8G_2133	# 0b000
 SPD_SOURCES += empty_ddr4	# 0b001
diff --git a/src/mainboard/google/hatch/variants/puff/Makefile.inc b/src/mainboard/google/hatch/variants/puff/Makefile.inc
index 8cbad31..c17467c 100644
--- a/src/mainboard/google/hatch/variants/puff/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/puff/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += gpio.c
 ramstage-y += mainboard.c
diff --git a/src/mainboard/google/hatch/variants/stryke/Makefile.inc b/src/mainboard/google/hatch/variants/stryke/Makefile.inc
index ab779a9..5388512 100644
--- a/src/mainboard/google/hatch/variants/stryke/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/stryke/Makefile.inc
@@ -1,14 +1,6 @@
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = 4G_2400         # 0b000
 SPD_SOURCES += empty_ddr4     # 0b001
diff --git a/src/mainboard/google/hatch/variants/sushi/Makefile.inc b/src/mainboard/google/hatch/variants/sushi/Makefile.inc
index 38cf728..c444209 100644
--- a/src/mainboard/google/hatch/variants/sushi/Makefile.inc
+++ b/src/mainboard/google/hatch/variants/sushi/Makefile.inc
@@ -1,13 +1,5 @@
 ## This file is part of the coreboot project.
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES =
diff --git a/src/mainboard/google/jecht/Makefile.inc b/src/mainboard/google/jecht/Makefile.inc
index 777974c..32ac1c8 100644
--- a/src/mainboard/google/jecht/Makefile.inc
+++ b/src/mainboard/google/jecht/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 romstage-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/jecht/cmos.layout b/src/mainboard/google/jecht/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/google/jecht/cmos.layout
+++ b/src/mainboard/google/jecht/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/jecht/spd/Makefile.inc b/src/mainboard/google/jecht/spd/Makefile.inc
index cc9726f..e3b4cfd 100644
--- a/src/mainboard/google/jecht/spd/Makefile.inc
+++ b/src/mainboard/google/jecht/spd/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
diff --git a/src/mainboard/google/kahlee/Kconfig b/src/mainboard/google/kahlee/Kconfig
index 85384dc..29cc3c7 100644
--- a/src/mainboard/google/kahlee/Kconfig
+++ b/src/mainboard/google/kahlee/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_GOOGLE_BASEBOARD_KAHLEE
 	bool
diff --git a/src/mainboard/google/kahlee/Makefile.inc b/src/mainboard/google/kahlee/Makefile.inc
index 097566c..2a770b6 100644
--- a/src/mainboard/google/kahlee/Makefile.inc
+++ b/src/mainboard/google/kahlee/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock/bootblock.c
 bootblock-y += BiosCallOuts.c
diff --git a/src/mainboard/google/kahlee/variants/aleena/Makefile.inc b/src/mainboard/google/kahlee/variants/aleena/Makefile.inc
index ba3228d..c93956b 100644
--- a/src/mainboard/google/kahlee/variants/aleena/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/aleena/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ../baseboard/spd
 
diff --git a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
index 864e0cd..2cac847 100644
--- a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc b/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc
index efcf35d..6e46166 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 bootblock-y += OemCustomize.c
diff --git a/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc
index bc3f6b6..82930be 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kahlee/variants/careena/Makefile.inc b/src/mainboard/google/kahlee/variants/careena/Makefile.inc
index dd9ff4e..dcd7d30 100644
--- a/src/mainboard/google/kahlee/variants/careena/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/careena/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ./spd
 
diff --git a/src/mainboard/google/kahlee/variants/careena/devicetree.cb b/src/mainboard/google/kahlee/variants/careena/devicetree.cb
index 6c28d0f..b2e1d65 100644
--- a/src/mainboard/google/kahlee/variants/careena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/careena/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc
index 8deec06..250ffcb 100644
--- a/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kahlee/variants/grunt/Makefile.inc b/src/mainboard/google/kahlee/variants/grunt/Makefile.inc
index ba3228d..c93956b 100644
--- a/src/mainboard/google/kahlee/variants/grunt/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/grunt/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ../baseboard/spd
 
diff --git a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
index efa4066..3fdd3e0 100644
--- a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/liara/Makefile.inc b/src/mainboard/google/kahlee/variants/liara/Makefile.inc
index ba3228d..c93956b 100644
--- a/src/mainboard/google/kahlee/variants/liara/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/liara/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ../baseboard/spd
 
diff --git a/src/mainboard/google/kahlee/variants/liara/devicetree.cb b/src/mainboard/google/kahlee/variants/liara/devicetree.cb
index 0983f79..133cc97 100644
--- a/src/mainboard/google/kahlee/variants/liara/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/liara/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc b/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc
index 89458de..33fb542 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ./spd
 
diff --git a/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb b/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb
index efe92f7..cb27f75 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc
index 307b499..45487cb 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kahlee/variants/treeya/Makefile.inc b/src/mainboard/google/kahlee/variants/treeya/Makefile.inc
index 89458de..33fb542 100644
--- a/src/mainboard/google/kahlee/variants/treeya/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/treeya/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ./spd
 
diff --git a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
index efc384f..a4d44c5 100644
--- a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc
index 307b499..45487cb 100644
--- a/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kukui/Kconfig b/src/mainboard/google/kukui/Kconfig
index 69c0374..44af8bd 100644
--- a/src/mainboard/google/kukui/Kconfig
+++ b/src/mainboard/google/kukui/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # Umbrella option to be selected by variant boards.
 config BOARD_GOOGLE_KUKUI_COMMON
diff --git a/src/mainboard/google/kukui/devicetree.cb b/src/mainboard/google/kukui/devicetree.cb
index f11ca45..96be830 100644
--- a/src/mainboard/google/kukui/devicetree.cb
+++ b/src/mainboard/google/kukui/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8183
 	device cpu_cluster 0 on
diff --git a/src/mainboard/google/link/Makefile.inc b/src/mainboard/google/link/Makefile.inc
index 0e720e9..196e362 100644
--- a/src/mainboard/google/link/Makefile.inc
+++ b/src/mainboard/google/link/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += ec.c
 
diff --git a/src/mainboard/google/link/cmos.layout b/src/mainboard/google/link/cmos.layout
index 615ff29..1131406 100644
--- a/src/mainboard/google/link/cmos.layout
+++ b/src/mainboard/google/link/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/nyan/Kconfig b/src/mainboard/google/nyan/Kconfig
index 82577e9..e9d4bbf 100644
--- a/src/mainboard/google/nyan/Kconfig
+++ b/src/mainboard/google/nyan/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_NYAN
 
diff --git a/src/mainboard/google/nyan/Makefile.inc b/src/mainboard/google/nyan/Makefile.inc
index 463747d..5f5da24 100644
--- a/src/mainboard/google/nyan/Makefile.inc
+++ b/src/mainboard/google/nyan/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # Add a handler for BCT config files
 $(call add-special-class,bct-cfg)
diff --git a/src/mainboard/google/nyan/bct/Makefile.inc b/src/mainboard/google/nyan/bct/Makefile.inc
index 311f34c..8c9cf73 100644
--- a/src/mainboard/google/nyan/bct/Makefile.inc
+++ b/src/mainboard/google/nyan/bct/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bct-cfg-$(CONFIG_NYAN_BCT_CFG_EMMC) += emmc.cfg
 bct-cfg-$(CONFIG_NYAN_BCT_CFG_SPI) += spi.cfg
diff --git a/src/mainboard/google/nyan/bct/cfg2inc.sh b/src/mainboard/google/nyan/bct/cfg2inc.sh
index d7b6c46..30e24c0 100755
--- a/src/mainboard/google/nyan/bct/cfg2inc.sh
+++ b/src/mainboard/google/nyan/bct/cfg2inc.sh
@@ -3,14 +3,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 bct_cfg2inc() {
 	local in_file="$1"
diff --git a/src/mainboard/google/nyan/devicetree.cb b/src/mainboard/google/nyan/devicetree.cb
index 015a84c..4a1b023 100644
--- a/src/mainboard/google/nyan/devicetree.cb
+++ b/src/mainboard/google/nyan/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/nvidia/tegra124
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/nyan_big/Kconfig b/src/mainboard/google/nyan_big/Kconfig
index 099ff7f..0bb96e7 100644
--- a/src/mainboard/google/nyan_big/Kconfig
+++ b/src/mainboard/google/nyan_big/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_NYAN_BIG
 
diff --git a/src/mainboard/google/nyan_big/Makefile.inc b/src/mainboard/google/nyan_big/Makefile.inc
index d6729a1..4bf9e9c 100644
--- a/src/mainboard/google/nyan_big/Makefile.inc
+++ b/src/mainboard/google/nyan_big/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # Add a handler for BCT config files
 $(call add-special-class,bct-cfg)
diff --git a/src/mainboard/google/nyan_big/bct/Makefile.inc b/src/mainboard/google/nyan_big/bct/Makefile.inc
index b918e15..fe29446 100644
--- a/src/mainboard/google/nyan_big/bct/Makefile.inc
+++ b/src/mainboard/google/nyan_big/bct/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bct-cfg-$(CONFIG_NYAN_BIG_BCT_CFG_EMMC) += emmc.cfg
 bct-cfg-$(CONFIG_NYAN_BIG_BCT_CFG_SPI) += spi.cfg
diff --git a/src/mainboard/google/nyan_big/devicetree.cb b/src/mainboard/google/nyan_big/devicetree.cb
index 015a84c..4a1b023 100644
--- a/src/mainboard/google/nyan_big/devicetree.cb
+++ b/src/mainboard/google/nyan_big/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/nvidia/tegra124
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/nyan_blaze/Kconfig b/src/mainboard/google/nyan_blaze/Kconfig
index 4c611b9..6f77f4b 100644
--- a/src/mainboard/google/nyan_blaze/Kconfig
+++ b/src/mainboard/google/nyan_blaze/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_NYAN_BLAZE
 
diff --git a/src/mainboard/google/nyan_blaze/Makefile.inc b/src/mainboard/google/nyan_blaze/Makefile.inc
index c5d6a10..fe1859e 100644
--- a/src/mainboard/google/nyan_blaze/Makefile.inc
+++ b/src/mainboard/google/nyan_blaze/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # Add a handler for BCT config files
 $(call add-special-class,bct-cfg)
diff --git a/src/mainboard/google/nyan_blaze/bct/Makefile.inc b/src/mainboard/google/nyan_blaze/bct/Makefile.inc
index d098a6e..00b66d7 100644
--- a/src/mainboard/google/nyan_blaze/bct/Makefile.inc
+++ b/src/mainboard/google/nyan_blaze/bct/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bct-cfg-$(CONFIG_NYAN_BLAZE_BCT_CFG_EMMC) += emmc.cfg
 bct-cfg-$(CONFIG_NYAN_BLAZE_BCT_CFG_SPI) += spi.cfg
diff --git a/src/mainboard/google/nyan_blaze/devicetree.cb b/src/mainboard/google/nyan_blaze/devicetree.cb
index 015a84c..4a1b023 100644
--- a/src/mainboard/google/nyan_blaze/devicetree.cb
+++ b/src/mainboard/google/nyan_blaze/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/nvidia/tegra124
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/oak/Kconfig b/src/mainboard/google/oak/Kconfig
index d1c5a9e..62e089d 100644
--- a/src/mainboard/google/oak/Kconfig
+++ b/src/mainboard/google/oak/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_GOOGLE_OAK_COMMON
 	def_bool n
diff --git a/src/mainboard/google/oak/Makefile.inc b/src/mainboard/google/oak/Makefile.inc
index b699852..dc99fdd 100644
--- a/src/mainboard/google/oak/Makefile.inc
+++ b/src/mainboard/google/oak/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += memlayout.ld
diff --git a/src/mainboard/google/oak/devicetree.cb b/src/mainboard/google/oak/devicetree.cb
index be86989..9922e5e 100644
--- a/src/mainboard/google/oak/devicetree.cb
+++ b/src/mainboard/google/oak/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/mediatek/mt8173
 	device cpu_cluster 0 on
diff --git a/src/mainboard/google/parrot/Makefile.inc b/src/mainboard/google/parrot/Makefile.inc
index 15adb81..61fb2d2 100644
--- a/src/mainboard/google/parrot/Makefile.inc
+++ b/src/mainboard/google/parrot/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += ec.c
 
diff --git a/src/mainboard/google/parrot/cmos.layout b/src/mainboard/google/parrot/cmos.layout
index 615ff29..1131406 100644
--- a/src/mainboard/google/parrot/cmos.layout
+++ b/src/mainboard/google/parrot/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/peach_pit/Kconfig b/src/mainboard/google/peach_pit/Kconfig
index 13c44f2..91d69e8 100644
--- a/src/mainboard/google/peach_pit/Kconfig
+++ b/src/mainboard/google/peach_pit/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_PEACH_PIT
 
diff --git a/src/mainboard/google/peach_pit/Makefile.inc b/src/mainboard/google/peach_pit/Makefile.inc
index fd76686..32046b1 100644
--- a/src/mainboard/google/peach_pit/Makefile.inc
+++ b/src/mainboard/google/peach_pit/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += wakeup.c
 
diff --git a/src/mainboard/google/peach_pit/devicetree.cb b/src/mainboard/google/peach_pit/devicetree.cb
index a86fb22..995c7c8 100644
--- a/src/mainboard/google/peach_pit/devicetree.cb
+++ b/src/mainboard/google/peach_pit/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/samsung/exynos5420
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/poppy/Makefile.inc b/src/mainboard/google/poppy/Makefile.inc
index 69cfe29..ab584d4 100644
--- a/src/mainboard/google/poppy/Makefile.inc
+++ b/src/mainboard/google/poppy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/rambi/Makefile.inc b/src/mainboard/google/rambi/Makefile.inc
index f9b0d79..d309647 100644
--- a/src/mainboard/google/rambi/Makefile.inc
+++ b/src/mainboard/google/rambi/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-$(CONFIG_CHROMEOS) += chromeos.c
 ramstage-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/rambi/cmos.layout b/src/mainboard/google/rambi/cmos.layout
index 014f442..6e04c5b 100644
--- a/src/mainboard/google/rambi/cmos.layout
+++ b/src/mainboard/google/rambi/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/rambi/variants/banjo/Makefile.inc b/src/mainboard/google/rambi/variants/banjo/Makefile.inc
index 379f85c..44a01e9 100644
--- a/src/mainboard/google/rambi/variants/banjo/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/banjo/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/candy/Makefile.inc b/src/mainboard/google/rambi/variants/candy/Makefile.inc
index d69b72c..105d83b 100644
--- a/src/mainboard/google/rambi/variants/candy/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/candy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/clapper/Makefile.inc b/src/mainboard/google/rambi/variants/clapper/Makefile.inc
index 1d09e1e..9bed767 100644
--- a/src/mainboard/google/rambi/variants/clapper/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/clapper/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/enguarde/Makefile.inc b/src/mainboard/google/rambi/variants/enguarde/Makefile.inc
index 98a7e3d..9beb8ff 100644
--- a/src/mainboard/google/rambi/variants/enguarde/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/enguarde/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/glimmer/Makefile.inc b/src/mainboard/google/rambi/variants/glimmer/Makefile.inc
index 5fcea88..4a4810f 100644
--- a/src/mainboard/google/rambi/variants/glimmer/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/glimmer/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/gnawty/Makefile.inc b/src/mainboard/google/rambi/variants/gnawty/Makefile.inc
index d21bd46..cb09189 100644
--- a/src/mainboard/google/rambi/variants/gnawty/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/gnawty/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/heli/Makefile.inc b/src/mainboard/google/rambi/variants/heli/Makefile.inc
index e2f7af1..1447cf9 100644
--- a/src/mainboard/google/rambi/variants/heli/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/heli/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/kip/Makefile.inc b/src/mainboard/google/rambi/variants/kip/Makefile.inc
index 017e8e2..23aa87c 100644
--- a/src/mainboard/google/rambi/variants/kip/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/kip/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/ninja/Makefile.inc b/src/mainboard/google/rambi/variants/ninja/Makefile.inc
index 6c094ee..32fe206 100644
--- a/src/mainboard/google/rambi/variants/ninja/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/ninja/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/orco/Makefile.inc b/src/mainboard/google/rambi/variants/orco/Makefile.inc
index a5c8f31..01d44b9 100644
--- a/src/mainboard/google/rambi/variants/orco/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/orco/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/quawks/Makefile.inc b/src/mainboard/google/rambi/variants/quawks/Makefile.inc
index 19b5093..72283b0 100644
--- a/src/mainboard/google/rambi/variants/quawks/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/quawks/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/rambi/Makefile.inc b/src/mainboard/google/rambi/variants/rambi/Makefile.inc
index df68deb..ee769d1 100644
--- a/src/mainboard/google/rambi/variants/rambi/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/rambi/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/squawks/Makefile.inc b/src/mainboard/google/rambi/variants/squawks/Makefile.inc
index 19b5093..72283b0 100644
--- a/src/mainboard/google/rambi/variants/squawks/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/squawks/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/sumo/Makefile.inc b/src/mainboard/google/rambi/variants/sumo/Makefile.inc
index 6c094ee..32fe206 100644
--- a/src/mainboard/google/rambi/variants/sumo/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/sumo/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/swanky/Makefile.inc b/src/mainboard/google/rambi/variants/swanky/Makefile.inc
index d7bee39..984a4ba 100644
--- a/src/mainboard/google/rambi/variants/swanky/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/swanky/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/rambi/variants/winky/Makefile.inc b/src/mainboard/google/rambi/variants/winky/Makefile.inc
index dc861bf..a08e722 100644
--- a/src/mainboard/google/rambi/variants/winky/Makefile.inc
+++ b/src/mainboard/google/rambi/variants/winky/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/google/sarien/Makefile.inc b/src/mainboard/google/sarien/Makefile.inc
index 0595623..3cea012 100644
--- a/src/mainboard/google/sarien/Makefile.inc
+++ b/src/mainboard/google/sarien/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/google/sarien/variants/arcada/Makefile.inc b/src/mainboard/google/sarien/variants/arcada/Makefile.inc
index c8d31fd..78b64f8 100644
--- a/src/mainboard/google/sarien/variants/arcada/Makefile.inc
+++ b/src/mainboard/google/sarien/variants/arcada/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/sarien/variants/sarien/Makefile.inc b/src/mainboard/google/sarien/variants/sarien/Makefile.inc
index c8d31fd..78b64f8 100644
--- a/src/mainboard/google/sarien/variants/sarien/Makefile.inc
+++ b/src/mainboard/google/sarien/variants/sarien/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 ramstage-y += gpio.c
diff --git a/src/mainboard/google/slippy/Makefile.inc b/src/mainboard/google/slippy/Makefile.inc
index eb75196..5040952 100644
--- a/src/mainboard/google/slippy/Makefile.inc
+++ b/src/mainboard/google/slippy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC) += ec.c
 
diff --git a/src/mainboard/google/slippy/cmos.layout b/src/mainboard/google/slippy/cmos.layout
index 014f442..6e04c5b 100644
--- a/src/mainboard/google/slippy/cmos.layout
+++ b/src/mainboard/google/slippy/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/slippy/variants/falco/Makefile.inc b/src/mainboard/google/slippy/variants/falco/Makefile.inc
index 650d12e..9521fe5 100644
--- a/src/mainboard/google/slippy/variants/falco/Makefile.inc
+++ b/src/mainboard/google/slippy/variants/falco/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ## DIMM SPD for on-board memory
 SPD_BIN = $(obj)/spd.bin
diff --git a/src/mainboard/google/slippy/variants/leon/Makefile.inc b/src/mainboard/google/slippy/variants/leon/Makefile.inc
index 2ba682e..22dc4f8 100644
--- a/src/mainboard/google/slippy/variants/leon/Makefile.inc
+++ b/src/mainboard/google/slippy/variants/leon/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ## DIMM SPD for on-board memory
 SPD_BIN = $(obj)/spd.bin
diff --git a/src/mainboard/google/slippy/variants/peppy/Makefile.inc b/src/mainboard/google/slippy/variants/peppy/Makefile.inc
index f43ccf5..3a82a53 100644
--- a/src/mainboard/google/slippy/variants/peppy/Makefile.inc
+++ b/src/mainboard/google/slippy/variants/peppy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ## DIMM SPD for on-board memory
 SPD_BIN = $(obj)/spd.bin
diff --git a/src/mainboard/google/slippy/variants/wolf/Makefile.inc b/src/mainboard/google/slippy/variants/wolf/Makefile.inc
index 249f563..926359d 100644
--- a/src/mainboard/google/slippy/variants/wolf/Makefile.inc
+++ b/src/mainboard/google/slippy/variants/wolf/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ## DIMM SPD for on-board memory
 SPD_BIN = $(obj)/spd.bin
diff --git a/src/mainboard/google/smaug/Kconfig b/src/mainboard/google/smaug/Kconfig
index 0d3e879..53670de 100644
--- a/src/mainboard/google/smaug/Kconfig
+++ b/src/mainboard/google/smaug/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_SMAUG
 
diff --git a/src/mainboard/google/smaug/Makefile.inc b/src/mainboard/google/smaug/Makefile.inc
index 7b84877..8194d0b 100644
--- a/src/mainboard/google/smaug/Makefile.inc
+++ b/src/mainboard/google/smaug/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # Add a handler for BCT config files
 $(call add-special-class,bct-cfg)
diff --git a/src/mainboard/google/smaug/bct/Makefile.inc b/src/mainboard/google/smaug/bct/Makefile.inc
index 4147ba6..b5909f5 100644
--- a/src/mainboard/google/smaug/bct/Makefile.inc
+++ b/src/mainboard/google/smaug/bct/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bct-cfg-$(CONFIG_SMAUG_BCT_CFG_EMMC) += emmc.cfg
 bct-cfg-$(CONFIG_SMAUG_BCT_CFG_SPI) += spi.cfg
diff --git a/src/mainboard/google/smaug/bct/cfg2inc.sh b/src/mainboard/google/smaug/bct/cfg2inc.sh
index d7b6c46..30e24c0 100644
--- a/src/mainboard/google/smaug/bct/cfg2inc.sh
+++ b/src/mainboard/google/smaug/bct/cfg2inc.sh
@@ -3,14 +3,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 bct_cfg2inc() {
 	local in_file="$1"
diff --git a/src/mainboard/google/smaug/devicetree.cb b/src/mainboard/google/smaug/devicetree.cb
index d90b4ea..15c1f01c 100644
--- a/src/mainboard/google/smaug/devicetree.cb
+++ b/src/mainboard/google/smaug/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/nvidia/tegra210
 	device cpu_cluster 0 on
diff --git a/src/mainboard/google/storm/Kconfig b/src/mainboard/google/storm/Kconfig
index 6095354..a5a3acf 100644
--- a/src/mainboard/google/storm/Kconfig
+++ b/src/mainboard/google/storm/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_STORM
 
diff --git a/src/mainboard/google/storm/Makefile.inc b/src/mainboard/google/storm/Makefile.inc
index e3c1992..3bc8166 100644
--- a/src/mainboard/google/storm/Makefile.inc
+++ b/src/mainboard/google/storm/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += cdp.c
diff --git a/src/mainboard/google/storm/devicetree.cb b/src/mainboard/google/storm/devicetree.cb
index c8c8a82..cb4e79c 100644
--- a/src/mainboard/google/storm/devicetree.cb
+++ b/src/mainboard/google/storm/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/qualcomm/ipq806x
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/stout/Makefile.inc b/src/mainboard/google/stout/Makefile.inc
index 5cc2bd4..3a038b7 100644
--- a/src/mainboard/google/stout/Makefile.inc
+++ b/src/mainboard/google/stout/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += ec.c
 
diff --git a/src/mainboard/google/stout/cmos.layout b/src/mainboard/google/stout/cmos.layout
index 615ff29..1131406 100644
--- a/src/mainboard/google/stout/cmos.layout
+++ b/src/mainboard/google/stout/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/google/trogdor/Makefile.inc b/src/mainboard/google/trogdor/Makefile.inc
index 3586db5..1d4c903 100644
--- a/src/mainboard/google/trogdor/Makefile.inc
+++ b/src/mainboard/google/trogdor/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += memlayout.ld
 bootblock-y += boardid.c
diff --git a/src/mainboard/google/veyron/Kconfig b/src/mainboard/google/veyron/Kconfig
index db72485..46b9bfe 100644
--- a/src/mainboard/google/veyron/Kconfig
+++ b/src/mainboard/google/veyron/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_GOOGLE_VEYRON # dummy option to be selected by variant boards
 	def_bool n
diff --git a/src/mainboard/google/veyron/Makefile.inc b/src/mainboard/google/veyron/Makefile.inc
index 5bcdb01..5e96068 100644
--- a/src/mainboard/google/veyron/Makefile.inc
+++ b/src/mainboard/google/veyron/Makefile.inc
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-y += bootblock.c
 bootblock-y += boardid.c
 bootblock-y += chromeos.c
diff --git a/src/mainboard/google/veyron/devicetree.cb b/src/mainboard/google/veyron/devicetree.cb
index ca359f4..17d7115 100644
--- a/src/mainboard/google/veyron/devicetree.cb
+++ b/src/mainboard/google/veyron/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/rockchip/rk3288
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/veyron_mickey/Kconfig b/src/mainboard/google/veyron_mickey/Kconfig
index 7f790cb..d1d18ba 100644
--- a/src/mainboard/google/veyron_mickey/Kconfig
+++ b/src/mainboard/google/veyron_mickey/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_VEYRON_MICKEY
 
diff --git a/src/mainboard/google/veyron_mickey/Makefile.inc b/src/mainboard/google/veyron_mickey/Makefile.inc
index 5bcdb01..5e96068 100644
--- a/src/mainboard/google/veyron_mickey/Makefile.inc
+++ b/src/mainboard/google/veyron_mickey/Makefile.inc
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-y += bootblock.c
 bootblock-y += boardid.c
 bootblock-y += chromeos.c
diff --git a/src/mainboard/google/veyron_mickey/devicetree.cb b/src/mainboard/google/veyron_mickey/devicetree.cb
index 374dccb6a..8dd456a 100644
--- a/src/mainboard/google/veyron_mickey/devicetree.cb
+++ b/src/mainboard/google/veyron_mickey/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/rockchip/rk3288
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/veyron_rialto/Kconfig b/src/mainboard/google/veyron_rialto/Kconfig
index a9f85a2..09db4eb 100644
--- a/src/mainboard/google/veyron_rialto/Kconfig
+++ b/src/mainboard/google/veyron_rialto/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_GOOGLE_VEYRON_RIALTO
 
diff --git a/src/mainboard/google/veyron_rialto/Makefile.inc b/src/mainboard/google/veyron_rialto/Makefile.inc
index 5bcdb01..5e96068 100644
--- a/src/mainboard/google/veyron_rialto/Makefile.inc
+++ b/src/mainboard/google/veyron_rialto/Makefile.inc
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-y += bootblock.c
 bootblock-y += boardid.c
 bootblock-y += chromeos.c
diff --git a/src/mainboard/google/veyron_rialto/devicetree.cb b/src/mainboard/google/veyron_rialto/devicetree.cb
index e2a1548..ca064f9 100644
--- a/src/mainboard/google/veyron_rialto/devicetree.cb
+++ b/src/mainboard/google/veyron_rialto/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/rockchip/rk3288
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/google/volteer/variants/ripto/Makefile.inc b/src/mainboard/google/volteer/variants/ripto/Makefile.inc
index ebfdbd5..b584cda 100644
--- a/src/mainboard/google/volteer/variants/ripto/Makefile.inc
+++ b/src/mainboard/google/volteer/variants/ripto/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_SOURCES = SPD_LPDDR4X_200b_8bank_1Rx16_16Gb_DDP_4267   # 0b0000
 
diff --git a/src/mainboard/hp/abm/Kconfig b/src/mainboard/hp/abm/Kconfig
index 89ddb23..25d22e1 100644
--- a/src/mainboard/hp/abm/Kconfig
+++ b/src/mainboard/hp/abm/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_HP_ABM
 
diff --git a/src/mainboard/hp/abm/Makefile.inc b/src/mainboard/hp/abm/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/hp/abm/Makefile.inc
+++ b/src/mainboard/hp/abm/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/hp/abm/cmos.layout b/src/mainboard/hp/abm/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/hp/abm/cmos.layout
+++ b/src/mainboard/hp/abm/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/hp/abm/devicetree.cb b/src/mainboard/hp/abm/devicetree.cb
index f3f5459..614aa27 100644
--- a/src/mainboard/hp/abm/devicetree.cb
+++ b/src/mainboard/hp/abm/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family16kb/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family16kb
diff --git a/src/mainboard/hp/compaq_8200_elite_sff/cmos.layout b/src/mainboard/hp/compaq_8200_elite_sff/cmos.layout
index 0f7fdaf..7b2f33b 100644
--- a/src/mainboard/hp/compaq_8200_elite_sff/cmos.layout
+++ b/src/mainboard/hp/compaq_8200_elite_sff/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb b/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb
index ce13e0a..a08b1a4 100644
--- a/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb
+++ b/src/mainboard/hp/compaq_8200_elite_sff/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	register "gfx.use_spread_spectrum_clock" = "0"
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/Kconfig b/src/mainboard/hp/pavilion_m6_1035dx/Kconfig
index 0683e2d..62afa34 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/Kconfig
+++ b/src/mainboard/hp/pavilion_m6_1035dx/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_HP_PAVILION_M6_1035DX
 
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/Makefile.inc b/src/mainboard/hp/pavilion_m6_1035dx/Makefile.inc
index f56c5e5..0947bd0 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/Makefile.inc
+++ b/src/mainboard/hp/pavilion_m6_1035dx/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += buildOpts.c
 romstage-y += BiosCallOuts.c
diff --git a/src/mainboard/hp/pavilion_m6_1035dx/devicetree.cb b/src/mainboard/hp/pavilion_m6_1035dx/devicetree.cb
index 9e23864..dd4f1a28 100644
--- a/src/mainboard/hp/pavilion_m6_1035dx/devicetree.cb
+++ b/src/mainboard/hp/pavilion_m6_1035dx/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/hp/snb_ivb_laptops/Kconfig b/src/mainboard/hp/snb_ivb_laptops/Kconfig
index 52297fe..a39cc53 100644
--- a/src/mainboard/hp/snb_ivb_laptops/Kconfig
+++ b/src/mainboard/hp/snb_ivb_laptops/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_HP_SNB_IVB_LAPTOPS
 	def_bool n
diff --git a/src/mainboard/hp/snb_ivb_laptops/Kconfig.name b/src/mainboard/hp/snb_ivb_laptops/Kconfig.name
index f013dfc..a5ccd5f 100644
--- a/src/mainboard/hp/snb_ivb_laptops/Kconfig.name
+++ b/src/mainboard/hp/snb_ivb_laptops/Kconfig.name
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_HP_2570P
 	bool "EliteBook 2570p"
diff --git a/src/mainboard/hp/snb_ivb_laptops/Makefile.inc b/src/mainboard/hp/snb_ivb_laptops/Makefile.inc
index c757a2f..f6d8a19 100644
--- a/src/mainboard/hp/snb_ivb_laptops/Makefile.inc
+++ b/src/mainboard/hp/snb_ivb_laptops/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += variants/$(VARIANT_DIR)/early_init.c
 romstage-y  += variants/$(VARIANT_DIR)/early_init.c
diff --git a/src/mainboard/hp/snb_ivb_laptops/cmos.layout b/src/mainboard/hp/snb_ivb_laptops/cmos.layout
index 8343734..5a5e263 100644
--- a/src/mainboard/hp/snb_ivb_laptops/cmos.layout
+++ b/src/mainboard/hp/snb_ivb_laptops/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/hp/z220_sff_workstation/cmos.layout b/src/mainboard/hp/z220_sff_workstation/cmos.layout
index e42e487..3b576af 100644
--- a/src/mainboard/hp/z220_sff_workstation/cmos.layout
+++ b/src/mainboard/hp/z220_sff_workstation/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/hp/z220_sff_workstation/devicetree.cb b/src/mainboard/hp/z220_sff_workstation/devicetree.cb
index 2be0ed7..ee91c04 100644
--- a/src/mainboard/hp/z220_sff_workstation/devicetree.cb
+++ b/src/mainboard/hp/z220_sff_workstation/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	register "gfx.use_spread_spectrum_clock" = "0"
diff --git a/src/mainboard/ibase/mb899/cmos.layout b/src/mainboard/ibase/mb899/cmos.layout
index 1e88c3e..0aaadae 100644
--- a/src/mainboard/ibase/mb899/cmos.layout
+++ b/src/mainboard/ibase/mb899/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/baskingridge/Makefile.inc b/src/mainboard/intel/baskingridge/Makefile.inc
index 657f849..c305b78 100644
--- a/src/mainboard/intel/baskingridge/Makefile.inc
+++ b/src/mainboard/intel/baskingridge/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += chromeos.c
 ramstage-y += chromeos.c
diff --git a/src/mainboard/intel/baskingridge/cmos.layout b/src/mainboard/intel/baskingridge/cmos.layout
index 4d77d7e..5bc6274 100644
--- a/src/mainboard/intel/baskingridge/cmos.layout
+++ b/src/mainboard/intel/baskingridge/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/cannonlake_rvp/Makefile.inc b/src/mainboard/intel/cannonlake_rvp/Makefile.inc
index acd9f11..741f0ae 100644
--- a/src/mainboard/intel/cannonlake_rvp/Makefile.inc
+++ b/src/mainboard/intel/cannonlake_rvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/cannonlake_rvp/spd/Makefile.inc b/src/mainboard/intel/cannonlake_rvp/spd/Makefile.inc
index e76f566..2c41c42 100644
--- a/src/mainboard/intel/cannonlake_rvp/spd/Makefile.inc
+++ b/src/mainboard/intel/cannonlake_rvp/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/intel/coffeelake_rvp/Makefile.inc b/src/mainboard/intel/coffeelake_rvp/Makefile.inc
index cfa4a84..1933035 100644
--- a/src/mainboard/intel/coffeelake_rvp/Makefile.inc
+++ b/src/mainboard/intel/coffeelake_rvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/intel/d510mo/Kconfig b/src/mainboard/intel/d510mo/Kconfig
index c7d7de0..4b6ae9e 100644
--- a/src/mainboard/intel/d510mo/Kconfig
+++ b/src/mainboard/intel/d510mo/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_INTEL_D510MO
 
diff --git a/src/mainboard/intel/d510mo/cmos.layout b/src/mainboard/intel/d510mo/cmos.layout
index 9fb4148..e0495cf 100644
--- a/src/mainboard/intel/d510mo/cmos.layout
+++ b/src/mainboard/intel/d510mo/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/d945gclf/Kconfig b/src/mainboard/intel/d945gclf/Kconfig
index 6c78c1d..4f9e86d 100644
--- a/src/mainboard/intel/d945gclf/Kconfig
+++ b/src/mainboard/intel/d945gclf/Kconfig
@@ -2,15 +2,8 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
+
 if BOARD_INTEL_D945GCLF
 
 config BOARD_SPECIFIC_OPTIONS
diff --git a/src/mainboard/intel/d945gclf/cmos.layout b/src/mainboard/intel/d945gclf/cmos.layout
index e5677fd..c2a0197 100644
--- a/src/mainboard/intel/d945gclf/cmos.layout
+++ b/src/mainboard/intel/d945gclf/cmos.layout
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/d945gclf/devicetree.cb b/src/mainboard/intel/d945gclf/devicetree.cb
index 9d81e31..ffff21c 100644
--- a/src/mainboard/intel/d945gclf/devicetree.cb
+++ b/src/mainboard/intel/d945gclf/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 
diff --git a/src/mainboard/intel/dg41wv/Kconfig b/src/mainboard/intel/dg41wv/Kconfig
index f45e1ec..7d7a8f3 100644
--- a/src/mainboard/intel/dg41wv/Kconfig
+++ b/src/mainboard/intel/dg41wv/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_INTEL_DG41WV
 
diff --git a/src/mainboard/intel/dg41wv/cmos.layout b/src/mainboard/intel/dg41wv/cmos.layout
index ac83eb8..7407228 100644
--- a/src/mainboard/intel/dg41wv/cmos.layout
+++ b/src/mainboard/intel/dg41wv/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/dg43gt/Kconfig b/src/mainboard/intel/dg43gt/Kconfig
index bb78676..3dbd207 100644
--- a/src/mainboard/intel/dg43gt/Kconfig
+++ b/src/mainboard/intel/dg43gt/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_INTEL_DG43GT
 
diff --git a/src/mainboard/intel/dg43gt/Makefile.inc b/src/mainboard/intel/dg43gt/Makefile.inc
index f89d130..2446f1a 100644
--- a/src/mainboard/intel/dg43gt/Makefile.inc
+++ b/src/mainboard/intel/dg43gt/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += cstates.c
 romstage-y += gpio.c
diff --git a/src/mainboard/intel/dg43gt/cmos.layout b/src/mainboard/intel/dg43gt/cmos.layout
index b92a95e..0d8e4ea 100644
--- a/src/mainboard/intel/dg43gt/cmos.layout
+++ b/src/mainboard/intel/dg43gt/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/emeraldlake2/Makefile.inc b/src/mainboard/intel/emeraldlake2/Makefile.inc
index ab7044d..cdbb22e 100644
--- a/src/mainboard/intel/emeraldlake2/Makefile.inc
+++ b/src/mainboard/intel/emeraldlake2/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += chromeos.c
 ramstage-y += chromeos.c
diff --git a/src/mainboard/intel/emeraldlake2/cmos.layout b/src/mainboard/intel/emeraldlake2/cmos.layout
index 84ed31f..2267f7c 100644
--- a/src/mainboard/intel/emeraldlake2/cmos.layout
+++ b/src/mainboard/intel/emeraldlake2/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/galileo/Kconfig b/src/mainboard/intel/galileo/Kconfig
index 26d56bc..b665790 100644
--- a/src/mainboard/intel/galileo/Kconfig
+++ b/src/mainboard/intel/galileo/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_INTEL_GALILEO
 
diff --git a/src/mainboard/intel/galileo/Kconfig.name b/src/mainboard/intel/galileo/Kconfig.name
index d570f24..6b0e200 100644
--- a/src/mainboard/intel/galileo/Kconfig.name
+++ b/src/mainboard/intel/galileo/Kconfig.name
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_INTEL_GALILEO
 	bool "Galileo"
diff --git a/src/mainboard/intel/galileo/Makefile.inc b/src/mainboard/intel/galileo/Makefile.inc
index 9e1defd..aa159ac 100644
--- a/src/mainboard/intel/galileo/Makefile.inc
+++ b/src/mainboard/intel/galileo/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 CPPFLAGS_common += -I$(src)/vendorcode/intel/fsp/fsp2_0/quark
 
diff --git a/src/mainboard/intel/galileo/devicetree.cb b/src/mainboard/intel/galileo/devicetree.cb
index 01182aa..12d19a8 100644
--- a/src/mainboard/intel/galileo/devicetree.cb
+++ b/src/mainboard/intel/galileo/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/intel/quark
 
diff --git a/src/mainboard/intel/harcuvar/Kconfig b/src/mainboard/intel/harcuvar/Kconfig
index e7a7e2b..6b46c85 100644
--- a/src/mainboard/intel/harcuvar/Kconfig
+++ b/src/mainboard/intel/harcuvar/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_INTEL_HARCUVAR
 
diff --git a/src/mainboard/intel/harcuvar/Makefile.inc b/src/mainboard/intel/harcuvar/Makefile.inc
index d8b1744..568f408 100644
--- a/src/mainboard/intel/harcuvar/Makefile.inc
+++ b/src/mainboard/intel/harcuvar/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_ENABLE_FSP_MEMORY_DOWN) += spd
 
diff --git a/src/mainboard/intel/harcuvar/devicetree.cb b/src/mainboard/intel/harcuvar/devicetree.cb
index 4d45dd9..3aba664 100644
--- a/src/mainboard/intel/harcuvar/devicetree.cb
+++ b/src/mainboard/intel/harcuvar/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/intel/denverton_ns
 
diff --git a/src/mainboard/intel/harcuvar/spd/Makefile.inc b/src/mainboard/intel/harcuvar/spd/Makefile.inc
index bd71aa3..aac334a 100644
--- a/src/mainboard/intel/harcuvar/spd/Makefile.inc
+++ b/src/mainboard/intel/harcuvar/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd.c
 
diff --git a/src/mainboard/intel/icelake_rvp/Makefile.inc b/src/mainboard/intel/icelake_rvp/Makefile.inc
index b9dd971d..e99e5cc 100644
--- a/src/mainboard/intel/icelake_rvp/Makefile.inc
+++ b/src/mainboard/intel/icelake_rvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/icelake_rvp/spd/Makefile.inc b/src/mainboard/intel/icelake_rvp/spd/Makefile.inc
index e9d6602..18110c7 100644
--- a/src/mainboard/intel/icelake_rvp/spd/Makefile.inc
+++ b/src/mainboard/intel/icelake_rvp/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/intel/icelake_rvp/variants/icl_u/Makefile.inc b/src/mainboard/intel/icelake_rvp/variants/icl_u/Makefile.inc
index 9d44bb0..67af144 100644
--- a/src/mainboard/intel/icelake_rvp/variants/icl_u/Makefile.inc
+++ b/src/mainboard/intel/icelake_rvp/variants/icl_u/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 
diff --git a/src/mainboard/intel/icelake_rvp/variants/icl_y/Makefile.inc b/src/mainboard/intel/icelake_rvp/variants/icl_y/Makefile.inc
index 9d44bb0..67af144 100644
--- a/src/mainboard/intel/icelake_rvp/variants/icl_y/Makefile.inc
+++ b/src/mainboard/intel/icelake_rvp/variants/icl_y/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 
diff --git a/src/mainboard/intel/jasperlake_rvp/Makefile.inc b/src/mainboard/intel/jasperlake_rvp/Makefile.inc
index 745e0cf..28684e2 100644
--- a/src/mainboard/intel/jasperlake_rvp/Makefile.inc
+++ b/src/mainboard/intel/jasperlake_rvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/jasperlake_rvp/spd/Makefile.inc b/src/mainboard/intel/jasperlake_rvp/spd/Makefile.inc
index 2909281..1bc62ee 100644
--- a/src/mainboard/intel/jasperlake_rvp/spd/Makefile.inc
+++ b/src/mainboard/intel/jasperlake_rvp/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/intel/jasperlake_rvp/variants/jslrvp/Makefile.inc b/src/mainboard/intel/jasperlake_rvp/variants/jslrvp/Makefile.inc
index 885a172..05fdc84 100644
--- a/src/mainboard/intel/jasperlake_rvp/variants/jslrvp/Makefile.inc
+++ b/src/mainboard/intel/jasperlake_rvp/variants/jslrvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 romstage-y += memory.c
diff --git a/src/mainboard/intel/kblrvp/Makefile.inc b/src/mainboard/intel/kblrvp/Makefile.inc
index dbea38e..d89cc54 100644
--- a/src/mainboard/intel/kblrvp/Makefile.inc
+++ b/src/mainboard/intel/kblrvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/kblrvp/cmos.layout b/src/mainboard/intel/kblrvp/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/intel/kblrvp/cmos.layout
+++ b/src/mainboard/intel/kblrvp/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/kblrvp/spd/Makefile.inc b/src/mainboard/intel/kblrvp/spd/Makefile.inc
index 7651bd3..ab6529f 100644
--- a/src/mainboard/intel/kblrvp/spd/Makefile.inc
+++ b/src/mainboard/intel/kblrvp/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/intel/kunimitsu/Makefile.inc b/src/mainboard/intel/kunimitsu/Makefile.inc
index 46ea86c..e1445ac 100644
--- a/src/mainboard/intel/kunimitsu/Makefile.inc
+++ b/src/mainboard/intel/kunimitsu/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/kunimitsu/cmos.layout b/src/mainboard/intel/kunimitsu/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/intel/kunimitsu/cmos.layout
+++ b/src/mainboard/intel/kunimitsu/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/kunimitsu/spd/Makefile.inc b/src/mainboard/intel/kunimitsu/spd/Makefile.inc
index b673a71..0f17843 100644
--- a/src/mainboard/intel/kunimitsu/spd/Makefile.inc
+++ b/src/mainboard/intel/kunimitsu/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/intel/saddlebrook/Kconfig b/src/mainboard/intel/saddlebrook/Kconfig
index 411e3d5..12e201b 100644
--- a/src/mainboard/intel/saddlebrook/Kconfig
+++ b/src/mainboard/intel/saddlebrook/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_INTEL_SKLSDLBRK
 
diff --git a/src/mainboard/intel/saddlebrook/Makefile.inc b/src/mainboard/intel/saddlebrook/Makefile.inc
index b62bcf9..0900345 100644
--- a/src/mainboard/intel/saddlebrook/Makefile.inc
+++ b/src/mainboard/intel/saddlebrook/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/saddlebrook/cmos.layout b/src/mainboard/intel/saddlebrook/cmos.layout
index 3fc1ee0..ae868bc 100644
--- a/src/mainboard/intel/saddlebrook/cmos.layout
+++ b/src/mainboard/intel/saddlebrook/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/saddlebrook/devicetree.cb b/src/mainboard/intel/saddlebrook/devicetree.cb
index 3332125..2e82614 100644
--- a/src/mainboard/intel/saddlebrook/devicetree.cb
+++ b/src/mainboard/intel/saddlebrook/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/intel/skylake
 
diff --git a/src/mainboard/intel/saddlebrook/spd/Makefile.inc b/src/mainboard/intel/saddlebrook/spd/Makefile.inc
index b312ae5..bf25f4a1 100644
--- a/src/mainboard/intel/saddlebrook/spd/Makefile.inc
+++ b/src/mainboard/intel/saddlebrook/spd/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
diff --git a/src/mainboard/intel/strago/Makefile.inc b/src/mainboard/intel/strago/Makefile.inc
index 70bfb5a..ac6b869 100644
--- a/src/mainboard/intel/strago/Makefile.inc
+++ b/src/mainboard/intel/strago/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-$(CONFIG_ENABLE_BUILTIN_COM1) += com_init.c
 
diff --git a/src/mainboard/intel/strago/cmos.layout b/src/mainboard/intel/strago/cmos.layout
index a0edabd..1e3aa17 100644
--- a/src/mainboard/intel/strago/cmos.layout
+++ b/src/mainboard/intel/strago/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/intel/tglrvp/Makefile.inc b/src/mainboard/intel/tglrvp/Makefile.inc
index 745e0cf..28684e2 100644
--- a/src/mainboard/intel/tglrvp/Makefile.inc
+++ b/src/mainboard/intel/tglrvp/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/intel/tglrvp/spd/Makefile.inc b/src/mainboard/intel/tglrvp/spd/Makefile.inc
index 131e938..091f2b7 100644
--- a/src/mainboard/intel/tglrvp/spd/Makefile.inc
+++ b/src/mainboard/intel/tglrvp/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/intel/tglrvp/variants/tglrvp_up3/Makefile.inc b/src/mainboard/intel/tglrvp/variants/tglrvp_up3/Makefile.inc
index 7a3ce63..c0fea91 100644
--- a/src/mainboard/intel/tglrvp/variants/tglrvp_up3/Makefile.inc
+++ b/src/mainboard/intel/tglrvp/variants/tglrvp_up3/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 
diff --git a/src/mainboard/intel/tglrvp/variants/tglrvp_up4/Makefile.inc b/src/mainboard/intel/tglrvp/variants/tglrvp_up4/Makefile.inc
index 7a3ce63..c0fea91 100644
--- a/src/mainboard/intel/tglrvp/variants/tglrvp_up4/Makefile.inc
+++ b/src/mainboard/intel/tglrvp/variants/tglrvp_up4/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 
diff --git a/src/mainboard/intel/wtm2/Makefile.inc b/src/mainboard/intel/wtm2/Makefile.inc
index 9dd899c..adbaf2c 100644
--- a/src/mainboard/intel/wtm2/Makefile.inc
+++ b/src/mainboard/intel/wtm2/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += gpio.c
 
diff --git a/src/mainboard/intel/wtm2/cmos.layout b/src/mainboard/intel/wtm2/cmos.layout
index 014f442..6e04c5b 100644
--- a/src/mainboard/intel/wtm2/cmos.layout
+++ b/src/mainboard/intel/wtm2/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/jetway/nf81-t56n-lf/Kconfig b/src/mainboard/jetway/nf81-t56n-lf/Kconfig
index 35c9e27..3d9d112 100644
--- a/src/mainboard/jetway/nf81-t56n-lf/Kconfig
+++ b/src/mainboard/jetway/nf81-t56n-lf/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_JETWAY_NF81_T56N_LF
 
diff --git a/src/mainboard/jetway/nf81-t56n-lf/Makefile.inc b/src/mainboard/jetway/nf81-t56n-lf/Makefile.inc
index f0a8fe6..ae80f5d 100644
--- a/src/mainboard/jetway/nf81-t56n-lf/Makefile.inc
+++ b/src/mainboard/jetway/nf81-t56n-lf/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/jetway/nf81-t56n-lf/cmos.layout b/src/mainboard/jetway/nf81-t56n-lf/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/jetway/nf81-t56n-lf/cmos.layout
+++ b/src/mainboard/jetway/nf81-t56n-lf/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/jetway/nf81-t56n-lf/devicetree.cb b/src/mainboard/jetway/nf81-t56n-lf/devicetree.cb
index 1a414da..e7b74f7 100644
--- a/src/mainboard/jetway/nf81-t56n-lf/devicetree.cb
+++ b/src/mainboard/jetway/nf81-t56n-lf/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/kontron/986lcd-m/cmos.layout b/src/mainboard/kontron/986lcd-m/cmos.layout
index f9084b3..470351f 100644
--- a/src/mainboard/kontron/986lcd-m/cmos.layout
+++ b/src/mainboard/kontron/986lcd-m/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/kontron/ktqm77/cmos.layout b/src/mainboard/kontron/ktqm77/cmos.layout
index 72117ae..85572d1 100644
--- a/src/mainboard/kontron/ktqm77/cmos.layout
+++ b/src/mainboard/kontron/ktqm77/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/g505s/Kconfig b/src/mainboard/lenovo/g505s/Kconfig
index fda7505..f5c2f19 100644
--- a/src/mainboard/lenovo/g505s/Kconfig
+++ b/src/mainboard/lenovo/g505s/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_LENOVO_G505S
 
diff --git a/src/mainboard/lenovo/g505s/Makefile.inc b/src/mainboard/lenovo/g505s/Makefile.inc
index f56c5e5..0947bd0 100644
--- a/src/mainboard/lenovo/g505s/Makefile.inc
+++ b/src/mainboard/lenovo/g505s/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += buildOpts.c
 romstage-y += BiosCallOuts.c
diff --git a/src/mainboard/lenovo/g505s/cmos.layout b/src/mainboard/lenovo/g505s/cmos.layout
index 001a9e0..028ba3c 100644
--- a/src/mainboard/lenovo/g505s/cmos.layout
+++ b/src/mainboard/lenovo/g505s/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/lenovo/g505s/devicetree.cb b/src/mainboard/lenovo/g505s/devicetree.cb
index be5c1f5..ef1f419 100644
--- a/src/mainboard/lenovo/g505s/devicetree.cb
+++ b/src/mainboard/lenovo/g505s/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/lenovo/l520/Makefile.inc b/src/mainboard/lenovo/l520/Makefile.inc
index c35b4c5..b84c660 100644
--- a/src/mainboard/lenovo/l520/Makefile.inc
+++ b/src/mainboard/lenovo/l520/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 romstage-y += gpio.c
diff --git a/src/mainboard/lenovo/l520/cmos.layout b/src/mainboard/lenovo/l520/cmos.layout
index 12941f3..ff39fc6 100644
--- a/src/mainboard/lenovo/l520/cmos.layout
+++ b/src/mainboard/lenovo/l520/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t400/Makefile.inc b/src/mainboard/lenovo/t400/Makefile.inc
index 9fff90c..a7f2b25 100644
--- a/src/mainboard/lenovo/t400/Makefile.inc
+++ b/src/mainboard/lenovo/t400/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += dock.c
diff --git a/src/mainboard/lenovo/t400/cmos.layout b/src/mainboard/lenovo/t400/cmos.layout
index 73236cf..9aaa3de 100644
--- a/src/mainboard/lenovo/t400/cmos.layout
+++ b/src/mainboard/lenovo/t400/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t410/Makefile.inc b/src/mainboard/lenovo/t410/Makefile.inc
index fa6e705..7f83dd2 100644
--- a/src/mainboard/lenovo/t410/Makefile.inc
+++ b/src/mainboard/lenovo/t410/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += early_init.c
 
diff --git a/src/mainboard/lenovo/t410/cmos.layout b/src/mainboard/lenovo/t410/cmos.layout
index 12b6568..e9543cf 100644
--- a/src/mainboard/lenovo/t410/cmos.layout
+++ b/src/mainboard/lenovo/t410/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t410/devicetree.cb b/src/mainboard/lenovo/t410/devicetree.cb
index 7f62738..744d9e9 100644
--- a/src/mainboard/lenovo/t410/devicetree.cb
+++ b/src/mainboard/lenovo/t410/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/ironlake
 	# IGD Displays
diff --git a/src/mainboard/lenovo/t420/Makefile.inc b/src/mainboard/lenovo/t420/Makefile.inc
index 05befdd..adf9f14 100644
--- a/src/mainboard/lenovo/t420/Makefile.inc
+++ b/src/mainboard/lenovo/t420/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += gpio.c
diff --git a/src/mainboard/lenovo/t420/cmos.layout b/src/mainboard/lenovo/t420/cmos.layout
index 26e6300..40bec2c 100644
--- a/src/mainboard/lenovo/t420/cmos.layout
+++ b/src/mainboard/lenovo/t420/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t420s/Makefile.inc b/src/mainboard/lenovo/t420s/Makefile.inc
index 05befdd..adf9f14 100644
--- a/src/mainboard/lenovo/t420s/Makefile.inc
+++ b/src/mainboard/lenovo/t420s/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += gpio.c
diff --git a/src/mainboard/lenovo/t420s/cmos.layout b/src/mainboard/lenovo/t420s/cmos.layout
index 26e6300..40bec2c 100644
--- a/src/mainboard/lenovo/t420s/cmos.layout
+++ b/src/mainboard/lenovo/t420s/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t430/cmos.layout b/src/mainboard/lenovo/t430/cmos.layout
index 05c6597..fdf77cf 100644
--- a/src/mainboard/lenovo/t430/cmos.layout
+++ b/src/mainboard/lenovo/t430/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t430s/Makefile.inc b/src/mainboard/lenovo/t430s/Makefile.inc
index 42879bc..f6d369e 100644
--- a/src/mainboard/lenovo/t430s/Makefile.inc
+++ b/src/mainboard/lenovo/t430s/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/lenovo/t430s/cmos.layout b/src/mainboard/lenovo/t430s/cmos.layout
index 29d8652..d10a484 100644
--- a/src/mainboard/lenovo/t430s/cmos.layout
+++ b/src/mainboard/lenovo/t430s/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t430s/variants/t431s/spd/Makefile.inc b/src/mainboard/lenovo/t430s/variants/t431s/spd/Makefile.inc
index f920859..41d9646 100644
--- a/src/mainboard/lenovo/t430s/variants/t431s/spd/Makefile.inc
+++ b/src/mainboard/lenovo/t430s/variants/t431s/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/lenovo/t440p/cmos.layout b/src/mainboard/lenovo/t440p/cmos.layout
index 54277c9..df828e3 100644
--- a/src/mainboard/lenovo/t440p/cmos.layout
+++ b/src/mainboard/lenovo/t440p/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t520/Makefile.inc b/src/mainboard/lenovo/t520/Makefile.inc
index 58815b6..5177c66 100644
--- a/src/mainboard/lenovo/t520/Makefile.inc
+++ b/src/mainboard/lenovo/t520/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/lenovo/t520/cmos.layout b/src/mainboard/lenovo/t520/cmos.layout
index 592dfca..d6e0cb3 100644
--- a/src/mainboard/lenovo/t520/cmos.layout
+++ b/src/mainboard/lenovo/t520/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t530/Makefile.inc b/src/mainboard/lenovo/t530/Makefile.inc
index 58815b6..5177c66 100644
--- a/src/mainboard/lenovo/t530/Makefile.inc
+++ b/src/mainboard/lenovo/t530/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/lenovo/t530/cmos.layout b/src/mainboard/lenovo/t530/cmos.layout
index 791885a..5a2d2b9 100644
--- a/src/mainboard/lenovo/t530/cmos.layout
+++ b/src/mainboard/lenovo/t530/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t60/Makefile.inc b/src/mainboard/lenovo/t60/Makefile.inc
index 3cac95e..6aacdb7 100644
--- a/src/mainboard/lenovo/t60/Makefile.inc
+++ b/src/mainboard/lenovo/t60/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += dock.c
 bootblock-y += dock.c
diff --git a/src/mainboard/lenovo/t60/cmos.layout b/src/mainboard/lenovo/t60/cmos.layout
index f765b75..5a40c21f 100644
--- a/src/mainboard/lenovo/t60/cmos.layout
+++ b/src/mainboard/lenovo/t60/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/t60/devicetree.cb b/src/mainboard/lenovo/t60/devicetree.cb
index c3d96f0..8bc9172 100644
--- a/src/mainboard/lenovo/t60/devicetree.cb
+++ b/src/mainboard/lenovo/t60/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	# IGD Displays
diff --git a/src/mainboard/lenovo/t60/variants/t60/overridetree.cb b/src/mainboard/lenovo/t60/variants/t60/overridetree.cb
index 2933fcb..1c3a6fa 100644
--- a/src/mainboard/lenovo/t60/variants/t60/overridetree.cb
+++ b/src/mainboard/lenovo/t60/variants/t60/overridetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	device domain 0 on
diff --git a/src/mainboard/lenovo/t60/variants/z61t/overridetree.cb b/src/mainboard/lenovo/t60/variants/z61t/overridetree.cb
index 113db0b..9e74339 100644
--- a/src/mainboard/lenovo/t60/variants/z61t/overridetree.cb
+++ b/src/mainboard/lenovo/t60/variants/z61t/overridetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	device domain 0 on
diff --git a/src/mainboard/lenovo/thinkcentre_a58/Kconfig b/src/mainboard/lenovo/thinkcentre_a58/Kconfig
index 150072b..237fd88 100644
--- a/src/mainboard/lenovo/thinkcentre_a58/Kconfig
+++ b/src/mainboard/lenovo/thinkcentre_a58/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_LENOVO_THINKCENTRE_A58
 
diff --git a/src/mainboard/lenovo/thinkcentre_a58/cmos.layout b/src/mainboard/lenovo/thinkcentre_a58/cmos.layout
index ac83eb8..7407228 100644
--- a/src/mainboard/lenovo/thinkcentre_a58/cmos.layout
+++ b/src/mainboard/lenovo/thinkcentre_a58/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x131e/Makefile.inc b/src/mainboard/lenovo/x131e/Makefile.inc
index 3ed751d..e63bf45 100644
--- a/src/mainboard/lenovo/x131e/Makefile.inc
+++ b/src/mainboard/lenovo/x131e/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 romstage-y += gpio.c
diff --git a/src/mainboard/lenovo/x131e/cmos.layout b/src/mainboard/lenovo/x131e/cmos.layout
index 10d62de..1a28eab 100644
--- a/src/mainboard/lenovo/x131e/cmos.layout
+++ b/src/mainboard/lenovo/x131e/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x1_carbon_gen1/Makefile.inc b/src/mainboard/lenovo/x1_carbon_gen1/Makefile.inc
index c4fea34..4da0635 100644
--- a/src/mainboard/lenovo/x1_carbon_gen1/Makefile.inc
+++ b/src/mainboard/lenovo/x1_carbon_gen1/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/lenovo/x1_carbon_gen1/cmos.layout b/src/mainboard/lenovo/x1_carbon_gen1/cmos.layout
index 06832bb..9345d0d 100644
--- a/src/mainboard/lenovo/x1_carbon_gen1/cmos.layout
+++ b/src/mainboard/lenovo/x1_carbon_gen1/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x1_carbon_gen1/spd/Makefile.inc b/src/mainboard/lenovo/x1_carbon_gen1/spd/Makefile.inc
index 76a181e..46d32b1 100644
--- a/src/mainboard/lenovo/x1_carbon_gen1/spd/Makefile.inc
+++ b/src/mainboard/lenovo/x1_carbon_gen1/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 SPD_BIN = $(obj)/spd.bin
 
diff --git a/src/mainboard/lenovo/x200/Makefile.inc b/src/mainboard/lenovo/x200/Makefile.inc
index 3df6377..f63238b 100644
--- a/src/mainboard/lenovo/x200/Makefile.inc
+++ b/src/mainboard/lenovo/x200/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_BOARD_LENOVO_X200) += variants/$(VARIANT_DIR)/dock.c
 ramstage-y += cstates.c
diff --git a/src/mainboard/lenovo/x200/cmos.layout b/src/mainboard/lenovo/x200/cmos.layout
index f8e3f8e..ede45d0 100644
--- a/src/mainboard/lenovo/x200/cmos.layout
+++ b/src/mainboard/lenovo/x200/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x201/Makefile.inc b/src/mainboard/lenovo/x201/Makefile.inc
index 1c32e56..2aedab0 100644
--- a/src/mainboard/lenovo/x201/Makefile.inc
+++ b/src/mainboard/lenovo/x201/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += early_init.c
 
diff --git a/src/mainboard/lenovo/x201/cmos.layout b/src/mainboard/lenovo/x201/cmos.layout
index 2a8b27e..895ed8c 100644
--- a/src/mainboard/lenovo/x201/cmos.layout
+++ b/src/mainboard/lenovo/x201/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x201/devicetree.cb b/src/mainboard/lenovo/x201/devicetree.cb
index 3401708..05c9c45 100644
--- a/src/mainboard/lenovo/x201/devicetree.cb
+++ b/src/mainboard/lenovo/x201/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/ironlake
 	# IGD Displays
diff --git a/src/mainboard/lenovo/x220/Makefile.inc b/src/mainboard/lenovo/x220/Makefile.inc
index 5ef50e8..d478753 100644
--- a/src/mainboard/lenovo/x220/Makefile.inc
+++ b/src/mainboard/lenovo/x220/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/lenovo/x220/cmos.layout b/src/mainboard/lenovo/x220/cmos.layout
index 43c4683..931cec9 100644
--- a/src/mainboard/lenovo/x220/cmos.layout
+++ b/src/mainboard/lenovo/x220/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x230/Makefile.inc b/src/mainboard/lenovo/x230/Makefile.inc
index 05befdd..adf9f14 100644
--- a/src/mainboard/lenovo/x230/Makefile.inc
+++ b/src/mainboard/lenovo/x230/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 bootblock-y += gpio.c
diff --git a/src/mainboard/lenovo/x230/cmos.layout b/src/mainboard/lenovo/x230/cmos.layout
index 3155dd7..aa3ce8e 100644
--- a/src/mainboard/lenovo/x230/cmos.layout
+++ b/src/mainboard/lenovo/x230/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x60/Makefile.inc b/src/mainboard/lenovo/x60/Makefile.inc
index ceed4a4..7b83a3b2 100644
--- a/src/mainboard/lenovo/x60/Makefile.inc
+++ b/src/mainboard/lenovo/x60/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += dock.c
 bootblock-y += dock.c
diff --git a/src/mainboard/lenovo/x60/cmos.layout b/src/mainboard/lenovo/x60/cmos.layout
index a402f05..616c0e6 100644
--- a/src/mainboard/lenovo/x60/cmos.layout
+++ b/src/mainboard/lenovo/x60/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/lenovo/x60/devicetree.cb b/src/mainboard/lenovo/x60/devicetree.cb
index fbe13d8..e826b63 100644
--- a/src/mainboard/lenovo/x60/devicetree.cb
+++ b/src/mainboard/lenovo/x60/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	# IGD Displays
diff --git a/src/mainboard/lippert/frontrunner-af/Kconfig b/src/mainboard/lippert/frontrunner-af/Kconfig
index e795203..33e726f 100644
--- a/src/mainboard/lippert/frontrunner-af/Kconfig
+++ b/src/mainboard/lippert/frontrunner-af/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_LIPPERT_FRONTRUNNER_AF
 
diff --git a/src/mainboard/lippert/frontrunner-af/Makefile.inc b/src/mainboard/lippert/frontrunner-af/Makefile.inc
index 0576704..3a272cf 100644
--- a/src/mainboard/lippert/frontrunner-af/Makefile.inc
+++ b/src/mainboard/lippert/frontrunner-af/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/lippert/frontrunner-af/cmos.layout b/src/mainboard/lippert/frontrunner-af/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/lippert/frontrunner-af/cmos.layout
+++ b/src/mainboard/lippert/frontrunner-af/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/lippert/frontrunner-af/devicetree.cb b/src/mainboard/lippert/frontrunner-af/devicetree.cb
index 1a2250a..8210b30 100644
--- a/src/mainboard/lippert/frontrunner-af/devicetree.cb
+++ b/src/mainboard/lippert/frontrunner-af/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/lippert/toucan-af/Kconfig b/src/mainboard/lippert/toucan-af/Kconfig
index 03c9d66..c2dd765 100644
--- a/src/mainboard/lippert/toucan-af/Kconfig
+++ b/src/mainboard/lippert/toucan-af/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_LIPPERT_TOUCAN_AF
 
diff --git a/src/mainboard/lippert/toucan-af/Makefile.inc b/src/mainboard/lippert/toucan-af/Makefile.inc
index ed4ad12..60bf171 100644
--- a/src/mainboard/lippert/toucan-af/Makefile.inc
+++ b/src/mainboard/lippert/toucan-af/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/lippert/toucan-af/cmos.layout b/src/mainboard/lippert/toucan-af/cmos.layout
index 275de95..08ea443 100644
--- a/src/mainboard/lippert/toucan-af/cmos.layout
+++ b/src/mainboard/lippert/toucan-af/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/lippert/toucan-af/devicetree.cb b/src/mainboard/lippert/toucan-af/devicetree.cb
index 2003d9e..005263f 100644
--- a/src/mainboard/lippert/toucan-af/devicetree.cb
+++ b/src/mainboard/lippert/toucan-af/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/msi/Kconfig b/src/mainboard/msi/Kconfig
index 4b92044..f288de0 100644
--- a/src/mainboard/msi/Kconfig
+++ b/src/mainboard/msi/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_MSI
 
diff --git a/src/mainboard/msi/ms7721/Kconfig b/src/mainboard/msi/ms7721/Kconfig
index 9d92c35..b13e037 100644
--- a/src/mainboard/msi/ms7721/Kconfig
+++ b/src/mainboard/msi/ms7721/Kconfig
@@ -3,15 +3,7 @@
 #
 
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_MSI_MS7721
 
diff --git a/src/mainboard/msi/ms7721/Makefile.inc b/src/mainboard/msi/ms7721/Makefile.inc
index 55bdeb5..cb73c27 100644
--- a/src/mainboard/msi/ms7721/Makefile.inc
+++ b/src/mainboard/msi/ms7721/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/msi/ms7721/cmos.layout b/src/mainboard/msi/ms7721/cmos.layout
index 4a18471..6e3f6db 100644
--- a/src/mainboard/msi/ms7721/cmos.layout
+++ b/src/mainboard/msi/ms7721/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/msi/ms7721/devicetree.cb b/src/mainboard/msi/ms7721/devicetree.cb
index e77cf91..91a0338 100644
--- a/src/mainboard/msi/ms7721/devicetree.cb
+++ b/src/mainboard/msi/ms7721/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family15tn/root_complex
 
 	device cpu_cluster 0 on
diff --git a/src/mainboard/opencellular/Kconfig b/src/mainboard/opencellular/Kconfig
index f1b4bd4..ea274f7 100644
--- a/src/mainboard/opencellular/Kconfig
+++ b/src/mainboard/opencellular/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_OPENCELLULAR
 
diff --git a/src/mainboard/opencellular/elgon/Kconfig b/src/mainboard/opencellular/elgon/Kconfig
index 69725ad..e2e325b 100644
--- a/src/mainboard/opencellular/elgon/Kconfig
+++ b/src/mainboard/opencellular/elgon/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_OPENCELLULAR_ELGON
 
diff --git a/src/mainboard/opencellular/elgon/Makefile.inc b/src/mainboard/opencellular/elgon/Makefile.inc
index 7ee8abb..7b733a5 100644
--- a/src/mainboard/opencellular/elgon/Makefile.inc
+++ b/src/mainboard/opencellular/elgon/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += memlayout.ld
diff --git a/src/mainboard/opencellular/elgon/devicetree.cb b/src/mainboard/opencellular/elgon/devicetree.cb
index e2c38db..7006eb1 100644
--- a/src/mainboard/opencellular/elgon/devicetree.cb
+++ b/src/mainboard/opencellular/elgon/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/cavium/cn81xx
 	device cpu_cluster 0 on end
diff --git a/src/mainboard/packardbell/ms2290/Makefile.inc b/src/mainboard/packardbell/ms2290/Makefile.inc
index d8200f9..ad55a51 100644
--- a/src/mainboard/packardbell/ms2290/Makefile.inc
+++ b/src/mainboard/packardbell/ms2290/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 smm-y += smihandler.c
 romstage-y += gpio.c
diff --git a/src/mainboard/packardbell/ms2290/cmos.layout b/src/mainboard/packardbell/ms2290/cmos.layout
index 590dda2..7386999 100644
--- a/src/mainboard/packardbell/ms2290/cmos.layout
+++ b/src/mainboard/packardbell/ms2290/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/packardbell/ms2290/devicetree.cb b/src/mainboard/packardbell/ms2290/devicetree.cb
index fb26392..df70c36 100644
--- a/src/mainboard/packardbell/ms2290/devicetree.cb
+++ b/src/mainboard/packardbell/ms2290/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/ironlake
 	# IGD Displays
diff --git a/src/mainboard/pcengines/apu1/Kconfig b/src/mainboard/pcengines/apu1/Kconfig
index bf58575..bd2b11c2 100644
--- a/src/mainboard/pcengines/apu1/Kconfig
+++ b/src/mainboard/pcengines/apu1/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_PCENGINES_APU1
 
diff --git a/src/mainboard/pcengines/apu1/Makefile.inc b/src/mainboard/pcengines/apu1/Makefile.inc
index 57c78fa..c053c39 100644
--- a/src/mainboard/pcengines/apu1/Makefile.inc
+++ b/src/mainboard/pcengines/apu1/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_AHCI_BIOS),y)
 stripped_ahcibios_id = $(call strip_quotes,$(CONFIG_AHCI_BIOS_ID))
diff --git a/src/mainboard/pcengines/apu1/devicetree.cb b/src/mainboard/pcengines/apu1/devicetree.cb
index dd851a7..aa96310 100644
--- a/src/mainboard/pcengines/apu1/devicetree.cb
+++ b/src/mainboard/pcengines/apu1/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/agesa/family14/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/agesa/family14
diff --git a/src/mainboard/pcengines/apu2/Kconfig b/src/mainboard/pcengines/apu2/Kconfig
index 4321c5c..7140eda 100644
--- a/src/mainboard/pcengines/apu2/Kconfig
+++ b/src/mainboard/pcengines/apu2/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_PCENGINES_APU2 || BOARD_PCENGINES_APU3 || BOARD_PCENGINES_APU4 || \
 	BOARD_PCENGINES_APU5
diff --git a/src/mainboard/pcengines/apu2/Makefile.inc b/src/mainboard/pcengines/apu2/Makefile.inc
index 94ca433..bdbd59b 100644
--- a/src/mainboard/pcengines/apu2/Makefile.inc
+++ b/src/mainboard/pcengines/apu2/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/pcengines/apu2/cmos.layout b/src/mainboard/pcengines/apu2/cmos.layout
index 7c63043..29ef195 100644
--- a/src/mainboard/pcengines/apu2/cmos.layout
+++ b/src/mainboard/pcengines/apu2/cmos.layout
@@ -3,14 +3,8 @@
 #  This file is part of the coreboot project.
 #
 #
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; version 2 of the License.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
+
 #*****************************************************************************
 
 entries
diff --git a/src/mainboard/pcengines/apu2/variants/apu2/devicetree.cb b/src/mainboard/pcengines/apu2/variants/apu2/devicetree.cb
index 672155b..435ea88 100644
--- a/src/mainboard/pcengines/apu2/variants/apu2/devicetree.cb
+++ b/src/mainboard/pcengines/apu2/variants/apu2/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/pi/00730F01/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/pi/00730F01
diff --git a/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb b/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb
index d743da6..499f105 100644
--- a/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb
+++ b/src/mainboard/pcengines/apu2/variants/apu3/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/pi/00730F01/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/pi/00730F01
diff --git a/src/mainboard/pcengines/apu2/variants/apu4/devicetree.cb b/src/mainboard/pcengines/apu2/variants/apu4/devicetree.cb
index c08e5b2..8502a77 100644
--- a/src/mainboard/pcengines/apu2/variants/apu4/devicetree.cb
+++ b/src/mainboard/pcengines/apu2/variants/apu4/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/pi/00730F01/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/pi/00730F01
diff --git a/src/mainboard/pcengines/apu2/variants/apu5/devicetree.cb b/src/mainboard/pcengines/apu2/variants/apu5/devicetree.cb
index 309674b..cfb4bd8 100644
--- a/src/mainboard/pcengines/apu2/variants/apu5/devicetree.cb
+++ b/src/mainboard/pcengines/apu2/variants/apu5/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip northbridge/amd/pi/00730F01/root_complex
 	device cpu_cluster 0 on
 		chip cpu/amd/pi/00730F01
diff --git a/src/mainboard/portwell/m107/Kconfig b/src/mainboard/portwell/m107/Kconfig
index 03c6c32..aa91a57 100644
--- a/src/mainboard/portwell/m107/Kconfig
+++ b/src/mainboard/portwell/m107/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_PORTWELL_M107
 
diff --git a/src/mainboard/portwell/m107/Makefile.inc b/src/mainboard/portwell/m107/Makefile.inc
index 42e1152..1199542 100644
--- a/src/mainboard/portwell/m107/Makefile.inc
+++ b/src/mainboard/portwell/m107/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += com_init.c
 
diff --git a/src/mainboard/portwell/m107/cmos.layout b/src/mainboard/portwell/m107/cmos.layout
index e809c23..201a58e 100644
--- a/src/mainboard/portwell/m107/cmos.layout
+++ b/src/mainboard/portwell/m107/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/purism/Kconfig b/src/mainboard/purism/Kconfig
index 93388e3..a71f0cd 100644
--- a/src/mainboard/purism/Kconfig
+++ b/src/mainboard/purism/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_PURISM
 
diff --git a/src/mainboard/purism/librem_bdw/Makefile.inc b/src/mainboard/purism/librem_bdw/Makefile.inc
index a03f360..faf309f 100644
--- a/src/mainboard/purism/librem_bdw/Makefile.inc
+++ b/src/mainboard/purism/librem_bdw/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += gpio.c
 romstage-y += variants/$(VARIANT_DIR)/pei_data.c
diff --git a/src/mainboard/purism/librem_skl/Makefile.inc b/src/mainboard/purism/librem_skl/Makefile.inc
index 31043ac..07b5197 100644
--- a/src/mainboard/purism/librem_skl/Makefile.inc
+++ b/src/mainboard/purism/librem_skl/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += ramstage.c
 ramstage-y += hda_verb.c
diff --git a/src/mainboard/razer/blade_stealth_kbl/Makefile.inc b/src/mainboard/razer/blade_stealth_kbl/Makefile.inc
index 75cee14..2df3cb2 100644
--- a/src/mainboard/razer/blade_stealth_kbl/Makefile.inc
+++ b/src/mainboard/razer/blade_stealth_kbl/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += spd
 
diff --git a/src/mainboard/razer/blade_stealth_kbl/spd/Makefile.inc b/src/mainboard/razer/blade_stealth_kbl/spd/Makefile.inc
index c223562..294a6e3 100644
--- a/src/mainboard/razer/blade_stealth_kbl/spd/Makefile.inc
+++ b/src/mainboard/razer/blade_stealth_kbl/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += spd_util.c
 
diff --git a/src/mainboard/roda/rk886ex/Makefile.inc b/src/mainboard/roda/rk886ex/Makefile.inc
index decfef7..711cfdfa 100644
--- a/src/mainboard/roda/rk886ex/Makefile.inc
+++ b/src/mainboard/roda/rk886ex/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += m3885.c
 ramstage-y += cstates.c
diff --git a/src/mainboard/roda/rk886ex/cmos.layout b/src/mainboard/roda/rk886ex/cmos.layout
index 03c865c..5faa4741 100644
--- a/src/mainboard/roda/rk886ex/cmos.layout
+++ b/src/mainboard/roda/rk886ex/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/roda/rk886ex/devicetree.cb b/src/mainboard/roda/rk886ex/devicetree.cb
index af250e7..9294520 100644
--- a/src/mainboard/roda/rk886ex/devicetree.cb
+++ b/src/mainboard/roda/rk886ex/devicetree.cb
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/i945
 	# IGD Displays
diff --git a/src/mainboard/roda/rk9/Makefile.inc b/src/mainboard/roda/rk9/Makefile.inc
index ffedbf6..ab3dbbb 100644
--- a/src/mainboard/roda/rk9/Makefile.inc
+++ b/src/mainboard/roda/rk9/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/roda/rk9/cmos.layout b/src/mainboard/roda/rk9/cmos.layout
index 7e3319b..688d102 100644
--- a/src/mainboard/roda/rk9/cmos.layout
+++ b/src/mainboard/roda/rk9/cmos.layout
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2 of
-# the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/roda/rv11/Makefile.inc b/src/mainboard/roda/rv11/Makefile.inc
index e715be7..df1877d 100644
--- a/src/mainboard/roda/rv11/Makefile.inc
+++ b/src/mainboard/roda/rv11/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 romstage-y += gpio.c
diff --git a/src/mainboard/roda/rv11/cmos.layout b/src/mainboard/roda/rv11/cmos.layout
index 8d383a3..07930f0 100644
--- a/src/mainboard/roda/rv11/cmos.layout
+++ b/src/mainboard/roda/rv11/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/roda/rv11/variants/rv11/devicetree.cb b/src/mainboard/roda/rv11/variants/rv11/devicetree.cb
index 29bf6c9..3a6a859 100644
--- a/src/mainboard/roda/rv11/variants/rv11/devicetree.cb
+++ b/src/mainboard/roda/rv11/variants/rv11/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	# IGD Displays
diff --git a/src/mainboard/roda/rv11/variants/rw11/devicetree.cb b/src/mainboard/roda/rv11/variants/rw11/devicetree.cb
index ea05ddc..811c0d3 100644
--- a/src/mainboard/roda/rv11/variants/rw11/devicetree.cb
+++ b/src/mainboard/roda/rv11/variants/rw11/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip northbridge/intel/sandybridge
 	# IGD Displays
diff --git a/src/mainboard/samsung/lumpy/Makefile.inc b/src/mainboard/samsung/lumpy/Makefile.inc
index cf8ef70..0527d4d 100644
--- a/src/mainboard/samsung/lumpy/Makefile.inc
+++ b/src/mainboard/samsung/lumpy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-y += ec.c
 
diff --git a/src/mainboard/samsung/lumpy/cmos.layout b/src/mainboard/samsung/lumpy/cmos.layout
index d68a85a..72596fb 100644
--- a/src/mainboard/samsung/lumpy/cmos.layout
+++ b/src/mainboard/samsung/lumpy/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/samsung/stumpy/Makefile.inc b/src/mainboard/samsung/stumpy/Makefile.inc
index 5c6d56a..ae91c1d 100644
--- a/src/mainboard/samsung/stumpy/Makefile.inc
+++ b/src/mainboard/samsung/stumpy/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += chromeos.c
 ramstage-y += chromeos.c
diff --git a/src/mainboard/samsung/stumpy/cmos.layout b/src/mainboard/samsung/stumpy/cmos.layout
index 885c3e2..24d3f3c 100644
--- a/src/mainboard/samsung/stumpy/cmos.layout
+++ b/src/mainboard/samsung/stumpy/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/sapphire/pureplatinumh61/cmos.layout b/src/mainboard/sapphire/pureplatinumh61/cmos.layout
index 68acd81..45999bb 100644
--- a/src/mainboard/sapphire/pureplatinumh61/cmos.layout
+++ b/src/mainboard/sapphire/pureplatinumh61/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/scaleway/tagada/Kconfig b/src/mainboard/scaleway/tagada/Kconfig
index 6c4f57a..c4c7eaf 100644
--- a/src/mainboard/scaleway/tagada/Kconfig
+++ b/src/mainboard/scaleway/tagada/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_SCALEWAY_TAGADA
 
diff --git a/src/mainboard/scaleway/tagada/Makefile.inc b/src/mainboard/scaleway/tagada/Makefile.inc
index 38763e5..293ebcc 100644
--- a/src/mainboard/scaleway/tagada/Makefile.inc
+++ b/src/mainboard/scaleway/tagada/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/scaleway/tagada/devicetree.cb b/src/mainboard/scaleway/tagada/devicetree.cb
index 6f766a6a..9bf21ae 100644
--- a/src/mainboard/scaleway/tagada/devicetree.cb
+++ b/src/mainboard/scaleway/tagada/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/intel/denverton_ns
 
diff --git a/src/mainboard/sifive/hifive-unleashed/Kconfig b/src/mainboard/sifive/hifive-unleashed/Kconfig
index d45b659..bc69e4e 100644
--- a/src/mainboard/sifive/hifive-unleashed/Kconfig
+++ b/src/mainboard/sifive/hifive-unleashed/Kconfig
@@ -1,14 +1,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_SIFIVE_HIFIVE_UNLEASHED
 
diff --git a/src/mainboard/sifive/hifive-unleashed/Makefile.inc b/src/mainboard/sifive/hifive-unleashed/Makefile.inc
index 3d31c73..ee5317d 100644
--- a/src/mainboard/sifive/hifive-unleashed/Makefile.inc
+++ b/src/mainboard/sifive/hifive-unleashed/Makefile.inc
@@ -1,14 +1,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += memlayout.ld
 bootblock-y += media.c
diff --git a/src/mainboard/sifive/hifive-unleashed/devicetree.cb b/src/mainboard/sifive/hifive-unleashed/devicetree.cb
index c28752a..778a8a5 100644
--- a/src/mainboard/sifive/hifive-unleashed/devicetree.cb
+++ b/src/mainboard/sifive/hifive-unleashed/devicetree.cb
@@ -1,14 +1,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 chip soc/sifive/fu540
 	device cpu_cluster 0 on  end
diff --git a/src/mainboard/supermicro/x10slm-f/cmos.layout b/src/mainboard/supermicro/x10slm-f/cmos.layout
index 74998bd..2f8e5db 100644
--- a/src/mainboard/supermicro/x10slm-f/cmos.layout
+++ b/src/mainboard/supermicro/x10slm-f/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/supermicro/x11-lga1151-series/Makefile.inc b/src/mainboard/supermicro/x11-lga1151-series/Makefile.inc
index 965e528..fe63ea3 100644
--- a/src/mainboard/supermicro/x11-lga1151-series/Makefile.inc
+++ b/src/mainboard/supermicro/x11-lga1151-series/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 
diff --git a/src/mainboard/supermicro/x11-lga1151-series/cmos.layout b/src/mainboard/supermicro/x11-lga1151-series/cmos.layout
index 90db74e..109774c 100644
--- a/src/mainboard/supermicro/x11-lga1151-series/cmos.layout
+++ b/src/mainboard/supermicro/x11-lga1151-series/cmos.layout
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # -----------------------------------------------------------------
 entries
diff --git a/src/mainboard/ti/Kconfig b/src/mainboard/ti/Kconfig
index fa33740..a565ae8 100644
--- a/src/mainboard/ti/Kconfig
+++ b/src/mainboard/ti/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if VENDOR_TI
 
diff --git a/src/mainboard/ti/beaglebone/Kconfig b/src/mainboard/ti/beaglebone/Kconfig
index ca0f578..d120250 100644
--- a/src/mainboard/ti/beaglebone/Kconfig
+++ b/src/mainboard/ti/beaglebone/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 if BOARD_TI_BEAGLEBONE
 
diff --git a/src/mainboard/ti/beaglebone/Makefile.inc b/src/mainboard/ti/beaglebone/Makefile.inc
index 7e9919e..6fccd31 100644
--- a/src/mainboard/ti/beaglebone/Makefile.inc
+++ b/src/mainboard/ti/beaglebone/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock.c
 bootblock-y += leds.c
diff --git a/src/mainboard/ti/beaglebone/devicetree.cb b/src/mainboard/ti/beaglebone/devicetree.cb
index 2bb3851..3b8c068 100644
--- a/src/mainboard/ti/beaglebone/devicetree.cb
+++ b/src/mainboard/ti/beaglebone/devicetree.cb
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 chip cpu/ti/am335x
 	device cpu_cluster 0 on end
diff --git a/src/northbridge/amd/agesa/Makefile.inc b/src/northbridge/amd/agesa/Makefile.inc
index b179089..5be47b8 100644
--- a/src/northbridge/amd/agesa/Makefile.inc
+++ b/src/northbridge/amd/agesa/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_AMD_AGESA),y)
 
diff --git a/src/northbridge/amd/agesa/family14/Makefile.inc b/src/northbridge/amd/agesa/family14/Makefile.inc
index 83ac7e5..532c57f 100644
--- a/src/northbridge/amd/agesa/family14/Makefile.inc
+++ b/src/northbridge/amd/agesa/family14/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += dimmSpd.c
 
diff --git a/src/northbridge/amd/agesa/family15tn/Makefile.inc b/src/northbridge/amd/agesa/family15tn/Makefile.inc
index d15703e..65a8d7d 100644
--- a/src/northbridge/amd/agesa/family15tn/Makefile.inc
+++ b/src/northbridge/amd/agesa/family15tn/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += dimmSpd.c
 
diff --git a/src/northbridge/amd/agesa/family16kb/Makefile.inc b/src/northbridge/amd/agesa/family16kb/Makefile.inc
index 83ac7e5..532c57f 100644
--- a/src/northbridge/amd/agesa/family16kb/Makefile.inc
+++ b/src/northbridge/amd/agesa/family16kb/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += dimmSpd.c
 
diff --git a/src/northbridge/amd/pi/00630F01/Makefile.inc b/src/northbridge/amd/pi/00630F01/Makefile.inc
index a882b7e..e0db0e0 100644
--- a/src/northbridge/amd/pi/00630F01/Makefile.inc
+++ b/src/northbridge/amd/pi/00630F01/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += dimmSpd.c
 
diff --git a/src/northbridge/amd/pi/00660F01/Makefile.inc b/src/northbridge/amd/pi/00660F01/Makefile.inc
index 2fadfa9..32b4ef8 100644
--- a/src/northbridge/amd/pi/00660F01/Makefile.inc
+++ b/src/northbridge/amd/pi/00660F01/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += dimmSpd.c
 
diff --git a/src/northbridge/amd/pi/00730F01/Makefile.inc b/src/northbridge/amd/pi/00730F01/Makefile.inc
index 1af4e14..5ae6e07 100644
--- a/src/northbridge/amd/pi/00730F01/Makefile.inc
+++ b/src/northbridge/amd/pi/00730F01/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += dimmSpd.c
 
diff --git a/src/northbridge/amd/pi/Makefile.inc b/src/northbridge/amd/pi/Makefile.inc
index c79a37f..9866264 100644
--- a/src/northbridge/amd/pi/Makefile.inc
+++ b/src/northbridge/amd/pi/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_AMD_PI),y)
 
diff --git a/src/northbridge/intel/gm45/Makefile.inc b/src/northbridge/intel/gm45/Makefile.inc
index 4334b0f..9228a1f 100644
--- a/src/northbridge/intel/gm45/Makefile.inc
+++ b/src/northbridge/intel/gm45/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_GM45),y)
 
diff --git a/src/northbridge/intel/haswell/Makefile.inc b/src/northbridge/intel/haswell/Makefile.inc
index 84424c2..e15a09f 100644
--- a/src/northbridge/intel/haswell/Makefile.inc
+++ b/src/northbridge/intel/haswell/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_HASWELL),y)
 
diff --git a/src/northbridge/intel/i945/Makefile.inc b/src/northbridge/intel/i945/Makefile.inc
index bae0589..128596f 100644
--- a/src/northbridge/intel/i945/Makefile.inc
+++ b/src/northbridge/intel/i945/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_I945),y)
 
diff --git a/src/northbridge/intel/ironlake/Makefile.inc b/src/northbridge/intel/ironlake/Makefile.inc
index 29f2275..77081fe 100644
--- a/src/northbridge/intel/ironlake/Makefile.inc
+++ b/src/northbridge/intel/ironlake/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_IRONLAKE),y)
 
diff --git a/src/northbridge/intel/pineview/Makefile.inc b/src/northbridge/intel/pineview/Makefile.inc
index 2b63394..645f018 100644
--- a/src/northbridge/intel/pineview/Makefile.inc
+++ b/src/northbridge/intel/pineview/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_PINEVIEW),y)
 
diff --git a/src/northbridge/intel/x4x/Makefile.inc b/src/northbridge/intel/x4x/Makefile.inc
index 9dd0cd8..508df6d 100644
--- a/src/northbridge/intel/x4x/Makefile.inc
+++ b/src/northbridge/intel/x4x/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_X4X),y)
 
diff --git a/src/security/vboot/Makefile.inc b/src/security/vboot/Makefile.inc
index b452e93..a173727 100644
--- a/src/security/vboot/Makefile.inc
+++ b/src/security/vboot/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_VBOOT_LIB),y)
 
diff --git a/src/soc/cavium/cn81xx/Makefile.inc b/src/soc/cavium/cn81xx/Makefile.inc
index 9149075..3dc8e7a 100644
--- a/src/soc/cavium/cn81xx/Makefile.inc
+++ b/src/soc/cavium/cn81xx/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_CAVIUM_CN81XX),y)
 
diff --git a/src/soc/cavium/common/Makefile.inc b/src/soc/cavium/common/Makefile.inc
index 71255c3..eaf5af8 100644
--- a/src/soc/cavium/common/Makefile.inc
+++ b/src/soc/cavium/common/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_CAVIUM_COMMON),y)
 
diff --git a/src/soc/intel/cannonlake/romstage/Makefile.inc b/src/soc/intel/cannonlake/romstage/Makefile.inc
index dfd5965..9fa6e90 100644
--- a/src/soc/intel/cannonlake/romstage/Makefile.inc
+++ b/src/soc/intel/cannonlake/romstage/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += ../../../../cpu/intel/car/romstage.c
 romstage-y += romstage.c
diff --git a/src/soc/intel/denverton_ns/Makefile.inc b/src/soc/intel/denverton_ns/Makefile.inc
index 2413274..a18fe44 100644
--- a/src/soc/intel/denverton_ns/Makefile.inc
+++ b/src/soc/intel/denverton_ns/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_INTEL_DENVERTON_NS),y)
 
diff --git a/src/soc/intel/icelake/romstage/Makefile.inc b/src/soc/intel/icelake/romstage/Makefile.inc
index 5a8322b..cf1f2f8 100644
--- a/src/soc/intel/icelake/romstage/Makefile.inc
+++ b/src/soc/intel/icelake/romstage/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fsp_params.c
 romstage-y += ../../../../cpu/intel/car/romstage.c
diff --git a/src/soc/intel/jasperlake/romstage/Makefile.inc b/src/soc/intel/jasperlake/romstage/Makefile.inc
index 5a8322b..cf1f2f8 100644
--- a/src/soc/intel/jasperlake/romstage/Makefile.inc
+++ b/src/soc/intel/jasperlake/romstage/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fsp_params.c
 romstage-y += ../../../../cpu/intel/car/romstage.c
diff --git a/src/soc/intel/quark/Makefile.inc b/src/soc/intel/quark/Makefile.inc
index ba853c0..0a48e31 100644
--- a/src/soc/intel/quark/Makefile.inc
+++ b/src/soc/intel/quark/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_INTEL_QUARK),y)
 
diff --git a/src/soc/intel/quark/romstage/Makefile.inc b/src/soc/intel/quark/romstage/Makefile.inc
index 055f737..d3fc73f 100644
--- a/src/soc/intel/quark/romstage/Makefile.inc
+++ b/src/soc/intel/quark/romstage/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += car.c
 romstage-$(CONFIG_DISPLAY_UPD_DATA) += debug.c
diff --git a/src/soc/intel/tigerlake/romstage/Makefile.inc b/src/soc/intel/tigerlake/romstage/Makefile.inc
index 5a8322b..cf1f2f8 100644
--- a/src/soc/intel/tigerlake/romstage/Makefile.inc
+++ b/src/soc/intel/tigerlake/romstage/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 romstage-y += fsp_params.c
 romstage-y += ../../../../cpu/intel/car/romstage.c
diff --git a/src/soc/mediatek/mt8173/Makefile.inc b/src/soc/mediatek/mt8173/Makefile.inc
index f8d6cca..6207837 100644
--- a/src/soc/mediatek/mt8173/Makefile.inc
+++ b/src/soc/mediatek/mt8173/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_MEDIATEK_MT8173),y)
 
diff --git a/src/soc/nvidia/tegra124/lp0/Makefile b/src/soc/nvidia/tegra124/lp0/Makefile
index bbac1db..248c6ba 100644
--- a/src/soc/nvidia/tegra124/lp0/Makefile
+++ b/src/soc/nvidia/tegra124/lp0/Makefile
@@ -1,16 +1,7 @@
 ################################################################################
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
-################################################################################
+## SPDX-License-Identifier: GPL-2.0-only
 
 -include ../../../../../.xcompile
 GCC_PREFIX?=$(CROSS_COMPILE_arm)
diff --git a/src/soc/nvidia/tegra210/lp0/Makefile b/src/soc/nvidia/tegra210/lp0/Makefile
index bbac1db..248c6ba 100644
--- a/src/soc/nvidia/tegra210/lp0/Makefile
+++ b/src/soc/nvidia/tegra210/lp0/Makefile
@@ -1,16 +1,7 @@
 ################################################################################
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
-################################################################################
+## SPDX-License-Identifier: GPL-2.0-only
 
 -include ../../../../../.xcompile
 GCC_PREFIX?=$(CROSS_COMPILE_arm)
diff --git a/src/soc/qualcomm/ipq40xx/Makefile.inc b/src/soc/qualcomm/ipq40xx/Makefile.inc
index 51ca3d4..9bafd9f 100644
--- a/src/soc/qualcomm/ipq40xx/Makefile.inc
+++ b/src/soc/qualcomm/ipq40xx/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_QC_IPQ40XX),y)
 
diff --git a/src/soc/qualcomm/ipq806x/Makefile.inc b/src/soc/qualcomm/ipq806x/Makefile.inc
index c2dfa37..09c4d7a 100644
--- a/src/soc/qualcomm/ipq806x/Makefile.inc
+++ b/src/soc/qualcomm/ipq806x/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_QC_IPQ806X),y)
 
diff --git a/src/soc/rockchip/rk3288/Makefile.inc b/src/soc/rockchip/rk3288/Makefile.inc
index 91976d2..565ced1 100644
--- a/src/soc/rockchip/rk3288/Makefile.inc
+++ b/src/soc/rockchip/rk3288/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_ROCKCHIP_RK3288),y)
 
diff --git a/src/soc/rockchip/rk3399/Makefile.inc b/src/soc/rockchip/rk3399/Makefile.inc
index 12d7af2..f38ee33 100644
--- a/src/soc/rockchip/rk3399/Makefile.inc
+++ b/src/soc/rockchip/rk3399/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_ROCKCHIP_RK3399),y)
 
diff --git a/src/soc/sifive/fu540/Makefile.inc b/src/soc/sifive/fu540/Makefile.inc
index 8a1edda..9d229a8 100644
--- a/src/soc/sifive/fu540/Makefile.inc
+++ b/src/soc/sifive/fu540/Makefile.inc
@@ -1,14 +1,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOC_SIFIVE_FU540),y)
 
diff --git a/src/southbridge/amd/agesa/Makefile.inc b/src/southbridge/amd/agesa/Makefile.inc
index fa33120..594b516 100644
--- a/src/southbridge/amd/agesa/Makefile.inc
+++ b/src/southbridge/amd/agesa/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_AGESA_HUDSON) += hudson
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_AGESA_YANGTZE) += hudson
diff --git a/src/southbridge/amd/cimx/Makefile.inc b/src/southbridge/amd/cimx/Makefile.inc
index d6f5038..e15b34b 100644
--- a/src/southbridge/amd/cimx/Makefile.inc
+++ b/src/southbridge/amd/cimx/Makefile.inc
@@ -2,14 +2,6 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_CIMX_SB800) += sb800
diff --git a/src/southbridge/amd/cimx/sb800/Makefile.inc b/src/southbridge/amd/cimx/sb800/Makefile.inc
index dcf2539..f74d7ce 100644
--- a/src/southbridge/amd/cimx/sb800/Makefile.inc
+++ b/src/southbridge/amd/cimx/sb800/Makefile.inc
@@ -2,16 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-
+# SPDX-License-Identifier: GPL-2.0-only
 
 # SB800 Platform Files
 
diff --git a/src/southbridge/amd/pi/Makefile.inc b/src/southbridge/amd/pi/Makefile.inc
index eb06873..993b2c6 100644
--- a/src/southbridge/amd/pi/Makefile.inc
+++ b/src/southbridge/amd/pi/Makefile.inc
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_PI_AVALON) += hudson
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_PI_BOLTON) += hudson
 subdirs-$(CONFIG_SOUTHBRIDGE_AMD_PI_KERN) += hudson
diff --git a/src/southbridge/intel/common/Makefile.inc b/src/southbridge/intel/common/Makefile.inc
index b48cb8a..07be830 100644
--- a/src/southbridge/intel/common/Makefile.inc
+++ b/src/southbridge/intel/common/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 # CONFIG_HAVE_INTEL_FIRMWARE protects doing anything to the build.
 subdirs-y += firmware
diff --git a/src/southbridge/intel/common/firmware/Makefile.inc b/src/southbridge/intel/common/firmware/Makefile.inc
index dde673b..b93b785 100644
--- a/src/southbridge/intel/common/firmware/Makefile.inc
+++ b/src/southbridge/intel/common/firmware/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_HAVE_INTEL_FIRMWARE),y)
 
diff --git a/src/southbridge/intel/i82801dx/Makefile.inc b/src/southbridge/intel/i82801dx/Makefile.inc
index 3acd618..12d274e 100644
--- a/src/southbridge/intel/i82801dx/Makefile.inc
+++ b/src/southbridge/intel/i82801dx/Makefile.inc
@@ -2,16 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or
-## modify it under the terms of the GNU General Public License as
-## published by the Free Software Foundation; version 2 of
-## the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_I82801DX),y)
 
diff --git a/src/southbridge/intel/i82801gx/Makefile.inc b/src/southbridge/intel/i82801gx/Makefile.inc
index 27e1630..b60f3e1 100644
--- a/src/southbridge/intel/i82801gx/Makefile.inc
+++ b/src/southbridge/intel/i82801gx/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_I82801GX),y)
 
diff --git a/src/southbridge/intel/i82801ix/Makefile.inc b/src/southbridge/intel/i82801ix/Makefile.inc
index 3c949f6..d92739d 100644
--- a/src/southbridge/intel/i82801ix/Makefile.inc
+++ b/src/southbridge/intel/i82801ix/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_I82801IX),y)
 
diff --git a/src/southbridge/intel/i82801jx/Makefile.inc b/src/southbridge/intel/i82801jx/Makefile.inc
index 49ef51e..cfa2b39 100644
--- a/src/southbridge/intel/i82801jx/Makefile.inc
+++ b/src/southbridge/intel/i82801jx/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_I82801JX),y)
 
diff --git a/src/southbridge/intel/ibexpeak/Makefile.inc b/src/southbridge/intel/ibexpeak/Makefile.inc
index 9f724cc..957af88 100644
--- a/src/southbridge/intel/ibexpeak/Makefile.inc
+++ b/src/southbridge/intel/ibexpeak/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_IBEXPEAK),y)
 
diff --git a/src/southbridge/ti/pci7420/Makefile.inc b/src/southbridge/ti/pci7420/Makefile.inc
index 6b9dfe3..029a846 100644
--- a/src/southbridge/ti/pci7420/Makefile.inc
+++ b/src/southbridge/ti/pci7420/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_TI_PCI7420),y)
 
diff --git a/src/southbridge/ti/pcixx12/Makefile.inc b/src/southbridge/ti/pcixx12/Makefile.inc
index e4ef6ad..7749da4 100644
--- a/src/southbridge/ti/pcixx12/Makefile.inc
+++ b/src/southbridge/ti/pcixx12/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_SOUTHBRIDGE_TI_PCIXX12),y)
 
diff --git a/src/vendorcode/amd/Kconfig b/src/vendorcode/amd/Kconfig
index 3e3a0e9..d4017d0 100644
--- a/src/vendorcode/amd/Kconfig
+++ b/src/vendorcode/amd/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 if CPU_AMD_AGESA || CPU_AMD_PI || SOC_AMD_PI
 
diff --git a/src/vendorcode/amd/cimx/sb800/Makefile.inc b/src/vendorcode/amd/cimx/sb800/Makefile.inc
index 192cd33..4f35721 100644
--- a/src/vendorcode/amd/cimx/sb800/Makefile.inc
+++ b/src/vendorcode/amd/cimx/sb800/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 CPPFLAGS_x86_32 += -I$(src)/southbridge/amd/cimx/sb800
 CPPFLAGS_x86_32 += -I$(src)/vendorcode/amd/cimx/sb800
diff --git a/src/vendorcode/amd/cimx/sb900/Makefile.inc b/src/vendorcode/amd/cimx/sb900/Makefile.inc
index 79ebcf8..26c6f2c 100644
--- a/src/vendorcode/amd/cimx/sb900/Makefile.inc
+++ b/src/vendorcode/amd/cimx/sb900/Makefile.inc
@@ -1,15 +1,7 @@
 #
 # This file is part of the coreboot project.
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 CPPFLAGS_x86_32 += -I$(src)/southbridge/amd/cimx/sb900
 CPPFLAGS_x86_32 += -I$(src)/vendorcode/amd/cimx/sb900
diff --git a/src/vendorcode/cavium/Kconfig b/src/vendorcode/cavium/Kconfig
index 7d73995..45f513d 100644
--- a/src/vendorcode/cavium/Kconfig
+++ b/src/vendorcode/cavium/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config CAVIUM_BDK
 	def_bool n
diff --git a/src/vendorcode/cavium/Makefile.inc b/src/vendorcode/cavium/Makefile.inc
index d44a496..3d89c66 100644
--- a/src/vendorcode/cavium/Makefile.inc
+++ b/src/vendorcode/cavium/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_CAVIUM_BDK),y)
 
diff --git a/src/vendorcode/eltan/Makefile.inc b/src/vendorcode/eltan/Makefile.inc
index 4d85975..ba55826 100644
--- a/src/vendorcode/eltan/Makefile.inc
+++ b/src/vendorcode/eltan/Makefile.inc
@@ -2,14 +2,6 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += security
diff --git a/src/vendorcode/eltan/security/Kconfig b/src/vendorcode/eltan/security/Kconfig
index eb5c32d..43482ff 100644
--- a/src/vendorcode/eltan/security/Kconfig
+++ b/src/vendorcode/eltan/security/Kconfig
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config USE_VENDORCODE_ELTAN
 	bool
diff --git a/src/vendorcode/eltan/security/Makefile.inc b/src/vendorcode/eltan/security/Makefile.inc
index de6ebae..3bfebd0 100644
--- a/src/vendorcode/eltan/security/Makefile.inc
+++ b/src/vendorcode/eltan/security/Makefile.inc
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += verified_boot
 subdirs-y += mboot
diff --git a/src/vendorcode/eltan/security/mboot/Kconfig b/src/vendorcode/eltan/security/mboot/Kconfig
index 003db90..a87b601 100644
--- a/src/vendorcode/eltan/security/mboot/Kconfig
+++ b/src/vendorcode/eltan/security/mboot/Kconfig
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 menu "Measured Boot (mboot)"
 
diff --git a/src/vendorcode/eltan/security/mboot/Makefile.inc b/src/vendorcode/eltan/security/mboot/Makefile.inc
index f81d6bb..f9886f5 100644
--- a/src/vendorcode/eltan/security/mboot/Makefile.inc
+++ b/src/vendorcode/eltan/security/mboot/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifneq ($(filter y,$(CONFIG_VENDORCODE_ELTAN_VBOOT) $(CONFIG_VENDORCODE_ELTAN_MBOOT)),)
 CPPFLAGS_common += -I$(src)/security/mboot
diff --git a/src/vendorcode/eltan/security/verified_boot/Kconfig b/src/vendorcode/eltan/security/verified_boot/Kconfig
index 5f09044..af1b8a6 100644
--- a/src/vendorcode/eltan/security/verified_boot/Kconfig
+++ b/src/vendorcode/eltan/security/verified_boot/Kconfig
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 menu "Verified Boot (verified_boot)"
 
diff --git a/src/vendorcode/eltan/security/verified_boot/Makefile.inc b/src/vendorcode/eltan/security/verified_boot/Makefile.inc
index 02a7b93..ccafc99 100644
--- a/src/vendorcode/eltan/security/verified_boot/Makefile.inc
+++ b/src/vendorcode/eltan/security/verified_boot/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifneq ($(filter y,$(CONFIG_VENDORCODE_ELTAN_VBOOT) $(CONFIG_VENDORCODE_ELTAN_MBOOT)),)
 
diff --git a/src/vendorcode/google/Kconfig b/src/vendorcode/google/Kconfig
index 6247bc8..426375c 100644
--- a/src/vendorcode/google/Kconfig
+++ b/src/vendorcode/google/Kconfig
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 source "src/vendorcode/google/chromeos/Kconfig"
 
diff --git a/src/vendorcode/google/Makefile.inc b/src/vendorcode/google/Makefile.inc
index bfce7cd..ad629bc 100644
--- a/src/vendorcode/google/Makefile.inc
+++ b/src/vendorcode/google/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_CHROMEOS) += chromeos
 
diff --git a/src/vendorcode/google/chromeos/Kconfig b/src/vendorcode/google/chromeos/Kconfig
index 5469fd4..b9d5de5 100644
--- a/src/vendorcode/google/chromeos/Kconfig
+++ b/src/vendorcode/google/chromeos/Kconfig
@@ -1,15 +1,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config MAINBOARD_HAS_CHROMEOS
 	def_bool n
diff --git a/src/vendorcode/google/chromeos/Makefile.inc b/src/vendorcode/google/chromeos/Makefile.inc
index 994f356..d4afe5c 100644
--- a/src/vendorcode/google/chromeos/Makefile.inc
+++ b/src/vendorcode/google/chromeos/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ramstage-$(CONFIG_ELOG) += elog.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += gnvs.c
diff --git a/src/vendorcode/intel/Kconfig b/src/vendorcode/intel/Kconfig
index 59bfba6..c3cd47a 100644
--- a/src/vendorcode/intel/Kconfig
+++ b/src/vendorcode/intel/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config UEFI_2_4_BINDING
 	def_bool n
diff --git a/src/vendorcode/intel/Makefile.inc b/src/vendorcode/intel/Makefile.inc
index 7969f75..a7da3a2 100644
--- a/src/vendorcode/intel/Makefile.inc
+++ b/src/vendorcode/intel/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 ifeq ($(CONFIG_UEFI_2_4_BINDING),y)
 # ProccessorBind.h provided in Ia32 directory. Types are derived from ia32.
diff --git a/src/vendorcode/siemens/Kconfig b/src/vendorcode/siemens/Kconfig
index 42938f4..1104bbf 100644
--- a/src/vendorcode/siemens/Kconfig
+++ b/src/vendorcode/siemens/Kconfig
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 config USE_SIEMENS_HWILIB
 	bool
diff --git a/src/vendorcode/siemens/Makefile.inc b/src/vendorcode/siemens/Makefile.inc
index e02badf..313fb58 100644
--- a/src/vendorcode/siemens/Makefile.inc
+++ b/src/vendorcode/siemens/Makefile.inc
@@ -2,14 +2,6 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-$(CONFIG_USE_SIEMENS_HWILIB) += hwilib
diff --git a/src/vendorcode/siemens/hwilib/Makefile.inc b/src/vendorcode/siemens/hwilib/Makefile.inc
index 41c108b..4cb200c 100644
--- a/src/vendorcode/siemens/hwilib/Makefile.inc
+++ b/src/vendorcode/siemens/hwilib/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 CFLAGS_x86_32 += -Isrc/vendorcode/siemens/hwilib