mainboard: Add SPDX license headers to Makefiles
To help identify the licenses of the various files contained in the
coreboot source, we've added SPDX headers to the top of all of the
.c and .h files. This extends that practice to Makefiles.
Any file in the coreboot project without a specific license is bound
to the license of the overall coreboot project, GPL Version 2.
This patch adds the GPL V2 license identifier to the top of all
makefiles in the mainboard directory that don't already have an SPDX
license line at the top.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Ic451e68b1ad9ccdf34484dd98bd7fca7e177ef22
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68982
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Tim Crawford <tcrawford@system76.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
diff --git a/src/mainboard/apple/macbook21/Makefile.inc b/src/mainboard/apple/macbook21/Makefile.inc
index 5819897..115d7e9 100644
--- a/src/mainboard/apple/macbook21/Makefile.inc
+++ b/src/mainboard/apple/macbook21/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += gpio.c
bootblock-y += early_init.c
romstage-y += early_init.c
diff --git a/src/mainboard/apple/macbookair4_2/Makefile.inc b/src/mainboard/apple/macbookair4_2/Makefile.inc
index 665a95f..36e4258 100644
--- a/src/mainboard/apple/macbookair4_2/Makefile.inc
+++ b/src/mainboard/apple/macbookair4_2/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-y += gnvs.c
diff --git a/src/mainboard/asrock/b85m_pro4/Makefile.inc b/src/mainboard/asrock/b85m_pro4/Makefile.inc
index d9a8d18..5464360 100644
--- a/src/mainboard/asrock/b85m_pro4/Makefile.inc
+++ b/src/mainboard/asrock/b85m_pro4/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += gpio.c
ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/asrock/g41c-gs/Makefile.inc b/src/mainboard/asrock/g41c-gs/Makefile.inc
index ab352cb..bb906a6 100644
--- a/src/mainboard/asrock/g41c-gs/Makefile.inc
+++ b/src/mainboard/asrock/g41c-gs/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/asus/p2b/Makefile.inc b/src/mainboard/asus/p2b/Makefile.inc
index eb48944..6e1fb3f 100644
--- a/src/mainboard/asus/p2b/Makefile.inc
+++ b/src/mainboard/asus/p2b/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-$(CONFIG_BOARD_ASUS_P3B_F) += variants/$(VARIANT_DIR)/romstage.c
diff --git a/src/mainboard/asus/p5gc-mx/Makefile.inc b/src/mainboard/asus/p5gc-mx/Makefile.inc
index a34f3f3..95250e2 100644
--- a/src/mainboard/asus/p5gc-mx/Makefile.inc
+++ b/src/mainboard/asus/p5gc-mx/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
bootblock-y += early_init.c
diff --git a/src/mainboard/asus/p5qpl-am/Makefile.inc b/src/mainboard/asus/p5qpl-am/Makefile.inc
index ab352cb..bb906a6 100644
--- a/src/mainboard/asus/p5qpl-am/Makefile.inc
+++ b/src/mainboard/asus/p5qpl-am/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/biostar/th61-itx/Makefile.inc b/src/mainboard/biostar/th61-itx/Makefile.inc
index 549a84f..33b55d2 100644
--- a/src/mainboard/biostar/th61-itx/Makefile.inc
+++ b/src/mainboard/biostar/th61-itx/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/bytedance/bd_egs/Makefile.inc b/src/mainboard/bytedance/bd_egs/Makefile.inc
index e6e739e..be3ae0c 100644
--- a/src/mainboard/bytedance/bd_egs/Makefile.inc
+++ b/src/mainboard/bytedance/bd_egs/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c gpio.c
romstage-y += romstage.c
ramstage-y += ramstage.c gpio.c
diff --git a/src/mainboard/clevo/cml-u/Makefile.inc b/src/mainboard/clevo/cml-u/Makefile.inc
index e71e87a..babadf5 100644
--- a/src/mainboard/clevo/cml-u/Makefile.inc
+++ b/src/mainboard/clevo/cml-u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/acpi
diff --git a/src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc b/src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc
index 09089b4..7f547fb 100644
--- a/src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc
+++ b/src/mainboard/clevo/cml-u/variants/l140cu/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
SPD_SOURCES = samsung-K4AAG165WA-BCTD
diff --git a/src/mainboard/clevo/tgl-u/Makefile.inc b/src/mainboard/clevo/tgl-u/Makefile.inc
index 0d57383..ae492df 100644
--- a/src/mainboard/clevo/tgl-u/Makefile.inc
+++ b/src/mainboard/clevo/tgl-u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/acpi
diff --git a/src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc b/src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc
index 10cb4fb..361cbcd 100644
--- a/src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc
+++ b/src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
SPD_SOURCES = samsung-M471A1G44AB0-CWE
diff --git a/src/mainboard/compulab/intense_pc/Makefile.inc b/src/mainboard/compulab/intense_pc/Makefile.inc
index e402ffa..e4b6fbf 100644
--- a/src/mainboard/compulab/intense_pc/Makefile.inc
+++ b/src/mainboard/compulab/intense_pc/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/emulation/qemu-i440fx/Makefile.inc b/src/mainboard/emulation/qemu-i440fx/Makefile.inc
index 7bd1c02..7d6041b 100644
--- a/src/mainboard/emulation/qemu-i440fx/Makefile.inc
+++ b/src/mainboard/emulation/qemu-i440fx/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += memmap.c
postcar-y += memmap.c
diff --git a/src/mainboard/emulation/qemu-q35/Makefile.inc b/src/mainboard/emulation/qemu-q35/Makefile.inc
index dc4e794..f4a89be 100644
--- a/src/mainboard/emulation/qemu-q35/Makefile.inc
+++ b/src/mainboard/emulation/qemu-q35/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
bootblock-y += memmap.c
diff --git a/src/mainboard/foxconn/d41s/Makefile.inc b/src/mainboard/foxconn/d41s/Makefile.inc
index 057b5bf..6e0b914 100644
--- a/src/mainboard/foxconn/d41s/Makefile.inc
+++ b/src/mainboard/foxconn/d41s/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += early_init.c
bootblock-y += early_init.c
ramstage-y += cstates.c
diff --git a/src/mainboard/foxconn/g41s-k/Makefile.inc b/src/mainboard/foxconn/g41s-k/Makefile.inc
index 161c623..b4e5dcc 100644
--- a/src/mainboard/foxconn/g41s-k/Makefile.inc
+++ b/src/mainboard/foxconn/g41s-k/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
diff --git a/src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.inc b/src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.inc
index a34f3f3..95250e2 100644
--- a/src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.inc
+++ b/src/mainboard/gigabyte/ga-945gcm-s2l/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
bootblock-y += early_init.c
diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc b/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc
index 4100476..de8c514 100644
--- a/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc
+++ b/src/mainboard/gigabyte/ga-g41m-es2l/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
diff --git a/src/mainboard/gigabyte/ga-h61m-series/Makefile.inc b/src/mainboard/gigabyte/ga-h61m-series/Makefile.inc
index 9916927..6b13e84 100644
--- a/src/mainboard/gigabyte/ga-h61m-series/Makefile.inc
+++ b/src/mainboard/gigabyte/ga-h61m-series/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += variants/$(VARIANT_DIR)/gpio.c
romstage-y += variants/$(VARIANT_DIR)/gpio.c
diff --git a/src/mainboard/google/asurada/Makefile.inc b/src/mainboard/google/asurada/Makefile.inc
index 84600b6..63073bc 100644
--- a/src/mainboard/google/asurada/Makefile.inc
+++ b/src/mainboard/google/asurada/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
subdirs-y += sdram_params/
bootblock-y += memlayout.ld
diff --git a/src/mainboard/google/asurada/sdram_params/Makefile.inc b/src/mainboard/google/asurada/sdram_params/Makefile.inc
index 20df2ba..2ce2442 100644
--- a/src/mainboard/google/asurada/sdram_params/Makefile.inc
+++ b/src/mainboard/google/asurada/sdram_params/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
sdram-params :=
# Generic parameters
diff --git a/src/mainboard/google/brya/Makefile.inc b/src/mainboard/google/brya/Makefile.inc
index b98c3ee..8c7e42d 100644
--- a/src/mainboard/google/brya/Makefile.inc
+++ b/src/mainboard/google/brya/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
verstage-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/brya/variants/aurash/Makefile.inc b/src/mainboard/google/brya/variants/aurash/Makefile.inc
index b799b4d..35cff38 100644
--- a/src/mainboard/google/brya/variants/aurash/Makefile.inc
+++ b/src/mainboard/google/brya/variants/aurash/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/baseboard/brask/Makefile.inc b/src/mainboard/google/brya/variants/baseboard/brask/Makefile.inc
index 8121d7e..96950d7 100644
--- a/src/mainboard/google/brya/variants/baseboard/brask/Makefile.inc
+++ b/src/mainboard/google/brya/variants/baseboard/brask/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc b/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc
index f2efc1d..3a66958 100644
--- a/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc
+++ b/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc b/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc
index 7c75e20..47123cd 100644
--- a/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc
+++ b/src/mainboard/google/brya/variants/baseboard/hades/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += memory.c
ramstage-y += ramstage.c
diff --git a/src/mainboard/google/brya/variants/baseboard/nissa/Makefile.inc b/src/mainboard/google/brya/variants/baseboard/nissa/Makefile.inc
index 53aaa41..3743228 100644
--- a/src/mainboard/google/brya/variants/baseboard/nissa/Makefile.inc
+++ b/src/mainboard/google/brya/variants/baseboard/nissa/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/google/brya/variants/brya0/Makefile.inc b/src/mainboard/google/brya/variants/brya0/Makefile.inc
index 52d0398..4a7ff71 100644
--- a/src/mainboard/google/brya/variants/brya0/Makefile.inc
+++ b/src/mainboard/google/brya/variants/brya0/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/brya/variants/crota/Makefile.inc b/src/mainboard/google/brya/variants/crota/Makefile.inc
index f9d5990..ebdc2e3 100644
--- a/src/mainboard/google/brya/variants/crota/Makefile.inc
+++ b/src/mainboard/google/brya/variants/crota/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/gaelin/Makefile.inc b/src/mainboard/google/brya/variants/gaelin/Makefile.inc
index 7d1f886..2cddd11 100644
--- a/src/mainboard/google/brya/variants/gaelin/Makefile.inc
+++ b/src/mainboard/google/brya/variants/gaelin/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/gothrax/Makefile.inc b/src/mainboard/google/brya/variants/gothrax/Makefile.inc
index 6c29346..a49954c 100644
--- a/src/mainboard/google/brya/variants/gothrax/Makefile.inc
+++ b/src/mainboard/google/brya/variants/gothrax/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/hades/Makefile.inc b/src/mainboard/google/brya/variants/hades/Makefile.inc
index 81d298a..e272dc2 100644
--- a/src/mainboard/google/brya/variants/hades/Makefile.inc
+++ b/src/mainboard/google/brya/variants/hades/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/moli/Makefile.inc b/src/mainboard/google/brya/variants/moli/Makefile.inc
index b799b4d..35cff38 100644
--- a/src/mainboard/google/brya/variants/moli/Makefile.inc
+++ b/src/mainboard/google/brya/variants/moli/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/skolas/Makefile.inc b/src/mainboard/google/brya/variants/skolas/Makefile.inc
index 52d0398..4a7ff71 100644
--- a/src/mainboard/google/brya/variants/skolas/Makefile.inc
+++ b/src/mainboard/google/brya/variants/skolas/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/brya/variants/skolas4es/Makefile.inc b/src/mainboard/google/brya/variants/skolas4es/Makefile.inc
index 52d0398..4a7ff71 100644
--- a/src/mainboard/google/brya/variants/skolas4es/Makefile.inc
+++ b/src/mainboard/google/brya/variants/skolas4es/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/brya/variants/taeko/Makefile.inc b/src/mainboard/google/brya/variants/taeko/Makefile.inc
index 396e5be..47f0432 100644
--- a/src/mainboard/google/brya/variants/taeko/Makefile.inc
+++ b/src/mainboard/google/brya/variants/taeko/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/taeko4es/Makefile.inc b/src/mainboard/google/brya/variants/taeko4es/Makefile.inc
index 396e5be..47f0432 100644
--- a/src/mainboard/google/brya/variants/taeko4es/Makefile.inc
+++ b/src/mainboard/google/brya/variants/taeko4es/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/taniks/Makefile.inc b/src/mainboard/google/brya/variants/taniks/Makefile.inc
index 3ee0dc9..61a70ec 100644
--- a/src/mainboard/google/brya/variants/taniks/Makefile.inc
+++ b/src/mainboard/google/brya/variants/taniks/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/cherry/Makefile.inc b/src/mainboard/google/cherry/Makefile.inc
index 4edbd38..5fe1339 100644
--- a/src/mainboard/google/cherry/Makefile.inc
+++ b/src/mainboard/google/cherry/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += memlayout.ld
bootblock-y += bootblock.c
bootblock-y += chromeos.c
diff --git a/src/mainboard/google/corsola/Makefile.inc b/src/mainboard/google/corsola/Makefile.inc
index da6775a..dce226f 100644
--- a/src/mainboard/google/corsola/Makefile.inc
+++ b/src/mainboard/google/corsola/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += memlayout.ld
bootblock-y += bootblock.c
bootblock-y += chromeos.c
diff --git a/src/mainboard/google/dedede/Makefile.inc b/src/mainboard/google/dedede/Makefile.inc
index ec1c065..fdc2630 100644
--- a/src/mainboard/google/dedede/Makefile.inc
+++ b/src/mainboard/google/dedede/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
bootblock-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/dedede/variants/baseboard/Makefile.inc b/src/mainboard/google/dedede/variants/baseboard/Makefile.inc
index 2c3f2f6..a58371a 100644
--- a/src/mainboard/google/dedede/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/dedede/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/fizz/variants/baseboard/Makefile.inc b/src/mainboard/google/fizz/variants/baseboard/Makefile.inc
index 0ad298b..476f28f 100644
--- a/src/mainboard/google/fizz/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/fizz/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/fizz/variants/endeavour/Makefile.inc b/src/mainboard/google/fizz/variants/endeavour/Makefile.inc
index ded8a35..6ff6456 100644
--- a/src/mainboard/google/fizz/variants/endeavour/Makefile.inc
+++ b/src/mainboard/google/fizz/variants/endeavour/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/fizz/variants/karma/Makefile.inc b/src/mainboard/google/fizz/variants/karma/Makefile.inc
index ec115e4..8d74101 100644
--- a/src/mainboard/google/fizz/variants/karma/Makefile.inc
+++ b/src/mainboard/google/fizz/variants/karma/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/geralt/Makefile.inc b/src/mainboard/google/geralt/Makefile.inc
index d2fda23..9a35496 100644
--- a/src/mainboard/google/geralt/Makefile.inc
+++ b/src/mainboard/google/geralt/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += memlayout.ld
bootblock-y += bootblock.c
bootblock-y += chromeos.c
diff --git a/src/mainboard/google/guybrush/variants/baseboard/Makefile.inc b/src/mainboard/google/guybrush/variants/baseboard/Makefile.inc
index cfd3faa..74d030d 100644
--- a/src/mainboard/google/guybrush/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/guybrush/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
bootblock-y += helpers.c
diff --git a/src/mainboard/google/kukui/Makefile.inc b/src/mainboard/google/kukui/Makefile.inc
index 968ee19..7b0298d 100644
--- a/src/mainboard/google/kukui/Makefile.inc
+++ b/src/mainboard/google/kukui/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
subdirs-y += sdram_params/
subdirs-y += panel_params/
diff --git a/src/mainboard/google/kukui/sdram_params/Makefile.inc b/src/mainboard/google/kukui/sdram_params/Makefile.inc
index cb8f427..e7fc110 100644
--- a/src/mainboard/google/kukui/sdram_params/Makefile.inc
+++ b/src/mainboard/google/kukui/sdram_params/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
sdram-params :=
sdram-params += sdram-lpddr4x-K4UBE3D4AA-MGCR-4GB
sdram-params += sdram-lpddr4x-H9HCNNNCPMALHR-4GB
diff --git a/src/mainboard/google/mistral/Makefile.inc b/src/mainboard/google/mistral/Makefile.inc
index 48faadf..1cbaa8b 100644
--- a/src/mainboard/google/mistral/Makefile.inc
+++ b/src/mainboard/google/mistral/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
bootblock-y += chromeos.c
bootblock-y += reset.c
diff --git a/src/mainboard/google/myst/variants/baseboard/Makefile.inc b/src/mainboard/google/myst/variants/baseboard/Makefile.inc
index 9e9ec0d..d5e133a 100644
--- a/src/mainboard/google/myst/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/myst/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += fw_config.c
diff --git a/src/mainboard/google/octopus/Makefile.inc b/src/mainboard/google/octopus/Makefile.inc
index dd49610..accb463 100644
--- a/src/mainboard/google/octopus/Makefile.inc
+++ b/src/mainboard/google/octopus/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
bootblock-y += ec.c
diff --git a/src/mainboard/google/octopus/variants/ampton/Makefile.inc b/src/mainboard/google/octopus/variants/ampton/Makefile.inc
index dc1c1fe..c717243 100644
--- a/src/mainboard/google/octopus/variants/ampton/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/ampton/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/baseboard/Makefile.inc b/src/mainboard/google/octopus/variants/baseboard/Makefile.inc
index 06f125c..ace6dee 100644
--- a/src/mainboard/google/octopus/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/google/octopus/variants/bloog/Makefile.inc b/src/mainboard/google/octopus/variants/bloog/Makefile.inc
index 5228e70..86a53c0 100644
--- a/src/mainboard/google/octopus/variants/bloog/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/bloog/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/bobba/Makefile.inc b/src/mainboard/google/octopus/variants/bobba/Makefile.inc
index a854b66..17f22e5 100644
--- a/src/mainboard/google/octopus/variants/bobba/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/bobba/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/casta/Makefile.inc b/src/mainboard/google/octopus/variants/casta/Makefile.inc
index ba865e9..3c26f0a 100644
--- a/src/mainboard/google/octopus/variants/casta/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/casta/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/dood/Makefile.inc b/src/mainboard/google/octopus/variants/dood/Makefile.inc
index a854b66..17f22e5 100644
--- a/src/mainboard/google/octopus/variants/dood/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/dood/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/fleex/Makefile.inc b/src/mainboard/google/octopus/variants/fleex/Makefile.inc
index 9a649bda..ac62f6b 100644
--- a/src/mainboard/google/octopus/variants/fleex/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/fleex/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/foob/Makefile.inc b/src/mainboard/google/octopus/variants/foob/Makefile.inc
index 86a10df..a2f85b0 100644
--- a/src/mainboard/google/octopus/variants/foob/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/foob/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/garg/Makefile.inc b/src/mainboard/google/octopus/variants/garg/Makefile.inc
index 16211b7..6d41a6d 100644
--- a/src/mainboard/google/octopus/variants/garg/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/garg/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/lick/Makefile.inc b/src/mainboard/google/octopus/variants/lick/Makefile.inc
index 9fb63f5..9f8b781 100644
--- a/src/mainboard/google/octopus/variants/lick/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/lick/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/meep/Makefile.inc b/src/mainboard/google/octopus/variants/meep/Makefile.inc
index 7277888..4526e12 100644
--- a/src/mainboard/google/octopus/variants/meep/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/meep/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/phaser/Makefile.inc b/src/mainboard/google/octopus/variants/phaser/Makefile.inc
index 1b171c5..eda39ac 100644
--- a/src/mainboard/google/octopus/variants/phaser/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/phaser/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/octopus/variants/yorp/Makefile.inc b/src/mainboard/google/octopus/variants/yorp/Makefile.inc
index 0ec849f..f1a61afd 100644
--- a/src/mainboard/google/octopus/variants/yorp/Makefile.inc
+++ b/src/mainboard/google/octopus/variants/yorp/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/poppy/spd/Makefile.inc b/src/mainboard/google/poppy/spd/Makefile.inc
index 997352c..83fbfc5 100644
--- a/src/mainboard/google/poppy/spd/Makefile.inc
+++ b/src/mainboard/google/poppy/spd/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
SEC_SPD_BIN = $(obj)/sec-spd.bin
diff --git a/src/mainboard/google/poppy/variants/atlas/Makefile.inc b/src/mainboard/google/poppy/variants/atlas/Makefile.inc
index 397ef68..dc9062c 100644
--- a/src/mainboard/google/poppy/variants/atlas/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/atlas/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
SPD_SOURCES = empty # 0b0000
SPD_SOURCES += samsung_dimm_K4E8E324EB-EGCF # 0b0001
diff --git a/src/mainboard/google/poppy/variants/baseboard/Makefile.inc b/src/mainboard/google/poppy/variants/baseboard/Makefile.inc
index 41669f2..0d70ca2 100644
--- a/src/mainboard/google/poppy/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/google/poppy/variants/nami/Makefile.inc b/src/mainboard/google/poppy/variants/nami/Makefile.inc
index 7c1e480..7d9e81e 100644
--- a/src/mainboard/google/poppy/variants/nami/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/nami/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
# IMPORTANT!! When a new memory SPD is added here, please ensure that ddp_bitmap
# is correctly updated in memory.c to indicate if memory id is using DDP.
diff --git a/src/mainboard/google/poppy/variants/nautilus/Makefile.inc b/src/mainboard/google/poppy/variants/nautilus/Makefile.inc
index 3a36b83b..80e43fd 100644
--- a/src/mainboard/google/poppy/variants/nautilus/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/nautilus/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
SPD_SOURCES = samsung_dimm_K4E8E324EB-EGCF # 0b0000
SPD_SOURCES += samsung_dimm_K4E6E304EB-EGCF # 0b0001
diff --git a/src/mainboard/google/poppy/variants/nocturne/Makefile.inc b/src/mainboard/google/poppy/variants/nocturne/Makefile.inc
index 371655a..f5544f6 100644
--- a/src/mainboard/google/poppy/variants/nocturne/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/nocturne/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
SPD_SOURCES = empty # 0b0000
SPD_SOURCES += samsung_dimm_K4E8E324EB-EGCF # 0b0001 4GB
diff --git a/src/mainboard/google/poppy/variants/poppy/Makefile.inc b/src/mainboard/google/poppy/variants/poppy/Makefile.inc
index ecd1451..15d803a 100644
--- a/src/mainboard/google/poppy/variants/poppy/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/poppy/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
SPD_SOURCES = empty # 0b0000
SPD_SOURCES += micron_dimm_MT52L256M64D2PP-107 # 0b0001
diff --git a/src/mainboard/google/poppy/variants/rammus/Makefile.inc b/src/mainboard/google/poppy/variants/rammus/Makefile.inc
index 2baeb52..6bee4f8 100644
--- a/src/mainboard/google/poppy/variants/rammus/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/rammus/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
SPD_SOURCES = micron_dimm_MT52L512M32D2PF-093 # 0b0000
SPD_SOURCES += samsung_dimm_K4E8E324EB-EGCF # 0b0001
SPD_SOURCES += micron_dimm_MT52L256M32D1PF-093 # 0b0010
diff --git a/src/mainboard/google/poppy/variants/soraka/Makefile.inc b/src/mainboard/google/poppy/variants/soraka/Makefile.inc
index 9b14da6..ec06f40 100644
--- a/src/mainboard/google/poppy/variants/soraka/Makefile.inc
+++ b/src/mainboard/google/poppy/variants/soraka/Makefile.inc
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
SPD_SOURCES = empty # 0b0000
SPD_SOURCES += micron_dimm_MT52L256M64D2PP-107 # 0b0001
diff --git a/src/mainboard/google/reef/Makefile.inc b/src/mainboard/google/reef/Makefile.inc
index dd49610..accb463 100644
--- a/src/mainboard/google/reef/Makefile.inc
+++ b/src/mainboard/google/reef/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
bootblock-y += ec.c
diff --git a/src/mainboard/google/reef/variants/baseboard/Makefile.inc b/src/mainboard/google/reef/variants/baseboard/Makefile.inc
index 1484261..8ee85af 100644
--- a/src/mainboard/google/reef/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/reef/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/reef/variants/coral/Makefile.inc b/src/mainboard/google/reef/variants/coral/Makefile.inc
index 440ec9c..9ec0276 100644
--- a/src/mainboard/google/reef/variants/coral/Makefile.inc
+++ b/src/mainboard/google/reef/variants/coral/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += mainboard.c
diff --git a/src/mainboard/google/reef/variants/pyro/Makefile.inc b/src/mainboard/google/reef/variants/pyro/Makefile.inc
index fd45b94..be05cd4 100644
--- a/src/mainboard/google/reef/variants/pyro/Makefile.inc
+++ b/src/mainboard/google/reef/variants/pyro/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += memory.c
diff --git a/src/mainboard/google/reef/variants/snappy/Makefile.inc b/src/mainboard/google/reef/variants/snappy/Makefile.inc
index f3c87b2..ffdfd17 100644
--- a/src/mainboard/google/reef/variants/snappy/Makefile.inc
+++ b/src/mainboard/google/reef/variants/snappy/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += mainboard.c
diff --git a/src/mainboard/google/rex/Makefile.inc b/src/mainboard/google/rex/Makefile.inc
index cd6be13..8c60c59 100644
--- a/src/mainboard/google/rex/Makefile.inc
+++ b/src/mainboard/google/rex/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
verstage-$(CONFIG_CHROMEOS) += chromeos.c
diff --git a/src/mainboard/google/rex/variants/baseboard/ovis/Makefile.inc b/src/mainboard/google/rex/variants/baseboard/ovis/Makefile.inc
index bb3620a..2bf1925 100644
--- a/src/mainboard/google/rex/variants/baseboard/ovis/Makefile.inc
+++ b/src/mainboard/google/rex/variants/baseboard/ovis/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += memory.c
ramstage-y += ramstage.c
diff --git a/src/mainboard/google/rex/variants/baseboard/rex/Makefile.inc b/src/mainboard/google/rex/variants/baseboard/rex/Makefile.inc
index bb3620a..2bf1925 100644
--- a/src/mainboard/google/rex/variants/baseboard/rex/Makefile.inc
+++ b/src/mainboard/google/rex/variants/baseboard/rex/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += memory.c
ramstage-y += ramstage.c
diff --git a/src/mainboard/google/rex/variants/karis/Makefile.inc b/src/mainboard/google/rex/variants/karis/Makefile.inc
index 6c29346..a49954c 100644
--- a/src/mainboard/google/rex/variants/karis/Makefile.inc
+++ b/src/mainboard/google/rex/variants/karis/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/rex/variants/ovis/Makefile.inc b/src/mainboard/google/rex/variants/ovis/Makefile.inc
index b785122..4c33dad 100644
--- a/src/mainboard/google/rex/variants/ovis/Makefile.inc
+++ b/src/mainboard/google/rex/variants/ovis/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/google/rex/variants/rex0/Makefile.inc b/src/mainboard/google/rex/variants/rex0/Makefile.inc
index cdbf407..0f9a28b 100644
--- a/src/mainboard/google/rex/variants/rex0/Makefile.inc
+++ b/src/mainboard/google/rex/variants/rex0/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/google/rex/variants/screebo/Makefile.inc b/src/mainboard/google/rex/variants/screebo/Makefile.inc
index 192041b..8bea0ff 100644
--- a/src/mainboard/google/rex/variants/screebo/Makefile.inc
+++ b/src/mainboard/google/rex/variants/screebo/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/google/skyrim/variants/baseboard/Makefile.inc b/src/mainboard/google/skyrim/variants/baseboard/Makefile.inc
index 7828cf1..0f7cc89 100644
--- a/src/mainboard/google/skyrim/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/skyrim/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc b/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc
index f0b34f9..2099428 100644
--- a/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc
+++ b/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc b/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc
index 18391d8..fb492d3 100644
--- a/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc
+++ b/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += early_init.c
bootblock-y += gpio.c
romstage-y += early_init.c
diff --git a/src/mainboard/hp/folio_9480m/Makefile.inc b/src/mainboard/hp/folio_9480m/Makefile.inc
index ebe01ae..6f4727a 100644
--- a/src/mainboard/hp/folio_9480m/Makefile.inc
+++ b/src/mainboard/hp/folio_9480m/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += gpio.c
ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/hp/z220_series/Makefile.inc b/src/mainboard/hp/z220_series/Makefile.inc
index 00426a8..69ef088 100644
--- a/src/mainboard/hp/z220_series/Makefile.inc
+++ b/src/mainboard/hp/z220_series/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += variants/$(VARIANT_DIR)/gpio.c
romstage-y += variants/$(VARIANT_DIR)/gpio.c
ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/ibase/mb899/Makefile.inc b/src/mainboard/ibase/mb899/Makefile.inc
index 992c373..ad8a084 100644
--- a/src/mainboard/ibase/mb899/Makefile.inc
+++ b/src/mainboard/ibase/mb899/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += superio_hwm.c
ramstage-y += cstates.c
romstage-y += gpio.c
diff --git a/src/mainboard/ibm/sbp1/Makefile.inc b/src/mainboard/ibm/sbp1/Makefile.inc
index 0688aa1..4c7a7be 100644
--- a/src/mainboard/ibm/sbp1/Makefile.inc
+++ b/src/mainboard/ibm/sbp1/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-y += romstage.c
ramstage-y += ramstage.c
diff --git a/src/mainboard/intel/apollolake_rvp/Makefile.inc b/src/mainboard/intel/apollolake_rvp/Makefile.inc
index 8501868..d604d02 100644
--- a/src/mainboard/intel/apollolake_rvp/Makefile.inc
+++ b/src/mainboard/intel/apollolake_rvp/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
diff --git a/src/mainboard/intel/archercity_crb/Makefile.inc b/src/mainboard/intel/archercity_crb/Makefile.inc
index 0688aa1..4c7a7be 100644
--- a/src/mainboard/intel/archercity_crb/Makefile.inc
+++ b/src/mainboard/intel/archercity_crb/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-y += romstage.c
ramstage-y += ramstage.c
diff --git a/src/mainboard/intel/cedarisland_crb/Makefile.inc b/src/mainboard/intel/cedarisland_crb/Makefile.inc
index 3da456e..bf162bb 100644
--- a/src/mainboard/intel/cedarisland_crb/Makefile.inc
+++ b/src/mainboard/intel/cedarisland_crb/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-y += romstage.c
ramstage-y += ramstage.c
diff --git a/src/mainboard/intel/coffeelake_rvp/variants/baseboard/Makefile.inc b/src/mainboard/intel/coffeelake_rvp/variants/baseboard/Makefile.inc
index 0ad298b..476f28f 100644
--- a/src/mainboard/intel/coffeelake_rvp/variants/baseboard/Makefile.inc
+++ b/src/mainboard/intel/coffeelake_rvp/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/intel/d510mo/Makefile.inc b/src/mainboard/intel/d510mo/Makefile.inc
index f87689b..e546b9d 100644
--- a/src/mainboard/intel/d510mo/Makefile.inc
+++ b/src/mainboard/intel/d510mo/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += early_init.c
romstage-y += early_init.c
ramstage-y += cstates.c
diff --git a/src/mainboard/intel/d945gclf/Makefile.inc b/src/mainboard/intel/d945gclf/Makefile.inc
index a34f3f3..95250e2 100644
--- a/src/mainboard/intel/d945gclf/Makefile.inc
+++ b/src/mainboard/intel/d945gclf/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
bootblock-y += early_init.c
diff --git a/src/mainboard/intel/dcp847ske/Makefile.inc b/src/mainboard/intel/dcp847ske/Makefile.inc
index 08aa2dd..f8c155e 100644
--- a/src/mainboard/intel/dcp847ske/Makefile.inc
+++ b/src/mainboard/intel/dcp847ske/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += early_southbridge.c
romstage-y += early_southbridge.c
bootblock-y += gpio.c
diff --git a/src/mainboard/intel/dg41wv/Makefile.inc b/src/mainboard/intel/dg41wv/Makefile.inc
index 4100476..de8c514 100644
--- a/src/mainboard/intel/dg41wv/Makefile.inc
+++ b/src/mainboard/intel/dg41wv/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
diff --git a/src/mainboard/intel/dq67sw/Makefile.inc b/src/mainboard/intel/dq67sw/Makefile.inc
index 18391d8..fb492d3 100644
--- a/src/mainboard/intel/dq67sw/Makefile.inc
+++ b/src/mainboard/intel/dq67sw/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += early_init.c
bootblock-y += gpio.c
romstage-y += early_init.c
diff --git a/src/mainboard/intel/glkrvp/Makefile.inc b/src/mainboard/intel/glkrvp/Makefile.inc
index 72247b2..965a6f8 100644
--- a/src/mainboard/intel/glkrvp/Makefile.inc
+++ b/src/mainboard/intel/glkrvp/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
bootblock-y += ec.c
diff --git a/src/mainboard/intel/glkrvp/variants/baseboard/Makefile.inc b/src/mainboard/intel/glkrvp/variants/baseboard/Makefile.inc
index d2d344c..b0d35e8 100644
--- a/src/mainboard/intel/glkrvp/variants/baseboard/Makefile.inc
+++ b/src/mainboard/intel/glkrvp/variants/baseboard/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += boardid.c
diff --git a/src/mainboard/intel/leafhill/Makefile.inc b/src/mainboard/intel/leafhill/Makefile.inc
index c3077e7..ec5b262 100644
--- a/src/mainboard/intel/leafhill/Makefile.inc
+++ b/src/mainboard/intel/leafhill/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-y += romstage.c
diff --git a/src/mainboard/intel/minnow3/Makefile.inc b/src/mainboard/intel/minnow3/Makefile.inc
index 3e9bf68..a90af29 100644
--- a/src/mainboard/intel/minnow3/Makefile.inc
+++ b/src/mainboard/intel/minnow3/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
bootblock-y += gpio.c
diff --git a/src/mainboard/inventec/transformers/Makefile.inc b/src/mainboard/inventec/transformers/Makefile.inc
index 7619419..ecb6ef2 100644
--- a/src/mainboard/inventec/transformers/Makefile.inc
+++ b/src/mainboard/inventec/transformers/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-y += romstage.c
romstage-$(CONFIG_IPMI_KCS_ROMSTAGE) += ipmi.c
diff --git a/src/mainboard/kontron/986lcd-m/Makefile.inc b/src/mainboard/kontron/986lcd-m/Makefile.inc
index a34f3f3..95250e2 100644
--- a/src/mainboard/kontron/986lcd-m/Makefile.inc
+++ b/src/mainboard/kontron/986lcd-m/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
bootblock-y += early_init.c
diff --git a/src/mainboard/kontron/ktqm77/Makefile.inc b/src/mainboard/kontron/ktqm77/Makefile.inc
index e402ffa..e4b6fbf 100644
--- a/src/mainboard/kontron/ktqm77/Makefile.inc
+++ b/src/mainboard/kontron/ktqm77/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/kontron/mal10/Makefile.inc b/src/mainboard/kontron/mal10/Makefile.inc
index 7fbab00..2a21e03 100644
--- a/src/mainboard/kontron/mal10/Makefile.inc
+++ b/src/mainboard/kontron/mal10/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
ramstage-y += ramstage.c
ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += variants/$(VARIANT_DIR)/gma-mainboard.ads
diff --git a/src/mainboard/kontron/mal10/carriers/t10-tni/Makefile.inc b/src/mainboard/kontron/mal10/carriers/t10-tni/Makefile.inc
index c291d45..5d3bcc4 100644
--- a/src/mainboard/kontron/mal10/carriers/t10-tni/Makefile.inc
+++ b/src/mainboard/kontron/mal10/carriers/t10-tni/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += gpio.c
diff --git a/src/mainboard/kontron/mal10/variants/mal10/Makefile.inc b/src/mainboard/kontron/mal10/variants/mal10/Makefile.inc
index 4b48156..f0aa6b1 100644
--- a/src/mainboard/kontron/mal10/variants/mal10/Makefile.inc
+++ b/src/mainboard/kontron/mal10/variants/mal10/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
diff --git a/src/mainboard/lenovo/haswell/Makefile.inc b/src/mainboard/lenovo/haswell/Makefile.inc
index d1300f8..3861ea1 100644
--- a/src/mainboard/lenovo/haswell/Makefile.inc
+++ b/src/mainboard/lenovo/haswell/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += variants/$(VARIANT_DIR)/gpio.c
romstage-y += variants/$(VARIANT_DIR)/romstage.c
diff --git a/src/mainboard/lenovo/haswell/variants/t440p/Makefile.inc b/src/mainboard/lenovo/haswell/variants/t440p/Makefile.inc
index f3c87b2..ffdfd17 100644
--- a/src/mainboard/lenovo/haswell/variants/t440p/Makefile.inc
+++ b/src/mainboard/lenovo/haswell/variants/t440p/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += mainboard.c
diff --git a/src/mainboard/lenovo/s230u/Makefile.inc b/src/mainboard/lenovo/s230u/Makefile.inc
index 31bb642..073d8b2 100644
--- a/src/mainboard/lenovo/s230u/Makefile.inc
+++ b/src/mainboard/lenovo/s230u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
ramstage-y += ec.c
diff --git a/src/mainboard/lenovo/t430/Makefile.inc b/src/mainboard/lenovo/t430/Makefile.inc
index e402ffa..e4b6fbf 100644
--- a/src/mainboard/lenovo/t430/Makefile.inc
+++ b/src/mainboard/lenovo/t430/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
diff --git a/src/mainboard/lenovo/thinkcentre_a58/Makefile.inc b/src/mainboard/lenovo/thinkcentre_a58/Makefile.inc
index 4100476..de8c514 100644
--- a/src/mainboard/lenovo/thinkcentre_a58/Makefile.inc
+++ b/src/mainboard/lenovo/thinkcentre_a58/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
ramstage-y += cstates.c
romstage-y += gpio.c
diff --git a/src/mainboard/msi/h81m-p33/Makefile.inc b/src/mainboard/msi/h81m-p33/Makefile.inc
index d9a8d18..5464360 100644
--- a/src/mainboard/msi/h81m-p33/Makefile.inc
+++ b/src/mainboard/msi/h81m-p33/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
romstage-y += gpio.c
ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/msi/ms7707/Makefile.inc b/src/mainboard/msi/ms7707/Makefile.inc
index 2fa05da..10bd6bc 100644
--- a/src/mainboard/msi/ms7707/Makefile.inc
+++ b/src/mainboard/msi/ms7707/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += gpio.c
bootblock-y += early_init.c
diff --git a/src/mainboard/siemens/mc_apl1/Makefile.inc b/src/mainboard/siemens/mc_apl1/Makefile.inc
index 124e380..e179201 100644
--- a/src/mainboard/siemens/mc_apl1/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
# The inclusion of romstage.c is not necessary here.
diff --git a/src/mainboard/siemens/mc_apl1/variants/baseboard/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/baseboard/Makefile.inc
index e553581..be05cd4 100644
--- a/src/mainboard/siemens/mc_apl1/variants/baseboard/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/baseboard/Makefile.inc
@@ -1,2 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
romstage-y += memory.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl1/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl1/Makefile.inc
index 3629aca..dff9c79 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl1/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl1/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl2/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl2/Makefile.inc
index 152b46e..f2a034c 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl2/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl2/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl3/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl3/Makefile.inc
index 152b46e..f2a034c 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl3/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl3/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc
index e26339c..621ffd1 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/Makefile.inc
index 3629aca..dff9c79 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl6/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl6/Makefile.inc
index 152b46e..f2a034c 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl6/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl6/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
ramstage-y += gpio.c
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl7/Makefile.inc b/src/mainboard/siemens/mc_apl1/variants/mc_apl7/Makefile.inc
index ecab3cc..af6f16c 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl7/Makefile.inc
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl7/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += gpio.c
romstage-y += memory.c
diff --git a/src/mainboard/supermicro/x9scl/Makefile.inc b/src/mainboard/supermicro/x9scl/Makefile.inc
index 3465dfe..c83c7f3 100644
--- a/src/mainboard/supermicro/x9scl/Makefile.inc
+++ b/src/mainboard/supermicro/x9scl/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += early_init.c
bootblock-y += gpio.c
romstage-y += early_init.c
diff --git a/src/mainboard/system76/addw1/Makefile.inc b/src/mainboard/system76/addw1/Makefile.inc
index fedde68..0942459 100644
--- a/src/mainboard/system76/addw1/Makefile.inc
+++ b/src/mainboard/system76/addw1/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/adl/Makefile.inc b/src/mainboard/system76/adl/Makefile.inc
index 9dea9f3..c5334f1 100644
--- a/src/mainboard/system76/adl/Makefile.inc
+++ b/src/mainboard/system76/adl/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/bonw14/Makefile.inc b/src/mainboard/system76/bonw14/Makefile.inc
index a866021..2efcac5 100644
--- a/src/mainboard/system76/bonw14/Makefile.inc
+++ b/src/mainboard/system76/bonw14/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/cml-u/Makefile.inc b/src/mainboard/system76/cml-u/Makefile.inc
index 51ad543..921112c 100644
--- a/src/mainboard/system76/cml-u/Makefile.inc
+++ b/src/mainboard/system76/cml-u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/gaze15/Makefile.inc b/src/mainboard/system76/gaze15/Makefile.inc
index 32a4099..72f1366 100644
--- a/src/mainboard/system76/gaze15/Makefile.inc
+++ b/src/mainboard/system76/gaze15/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/kbl-u/Makefile.inc b/src/mainboard/system76/kbl-u/Makefile.inc
index d749e41..bf3828d 100644
--- a/src/mainboard/system76/kbl-u/Makefile.inc
+++ b/src/mainboard/system76/kbl-u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/oryp5/Makefile.inc b/src/mainboard/system76/oryp5/Makefile.inc
index 7c0701e..e52ccca 100644
--- a/src/mainboard/system76/oryp5/Makefile.inc
+++ b/src/mainboard/system76/oryp5/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/oryp6/Makefile.inc b/src/mainboard/system76/oryp6/Makefile.inc
index 2267eb6..ab8e965 100644
--- a/src/mainboard/system76/oryp6/Makefile.inc
+++ b/src/mainboard/system76/oryp6/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/system76/tgl-u/Makefile.inc b/src/mainboard/system76/tgl-u/Makefile.inc
index ca14835..28ada02 100644
--- a/src/mainboard/system76/tgl-u/Makefile.inc
+++ b/src/mainboard/system76/tgl-u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
ifeq ($(CONFIG_BOARD_SYSTEM76_GALP5),y)
diff --git a/src/mainboard/system76/whl-u/Makefile.inc b/src/mainboard/system76/whl-u/Makefile.inc
index d749e41..bf3828d 100644
--- a/src/mainboard/system76/whl-u/Makefile.inc
+++ b/src/mainboard/system76/whl-u/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
bootblock-y += bootblock.c
diff --git a/src/mainboard/up/squared/Makefile.inc b/src/mainboard/up/squared/Makefile.inc
index af2508e..68ddfca 100644
--- a/src/mainboard/up/squared/Makefile.inc
+++ b/src/mainboard/up/squared/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
bootblock-y += bootblock.c
romstage-y += romstage.c