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)