drivers: 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 drivers directory that don't already have an SPDX
license line at the top.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I8442bc18ce228eca88a084660be84bcd1c5de928
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68980
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Tim Crawford <tcrawford@system76.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>

101 files changed, 202 insertions, 0 deletions

diff --git a/src/drivers/acpi/thermal_zone/Makefile.inc b/src/drivers/acpi/thermal_zone/Makefile.inc
index 0a15b91667..3bf110c8a5 100644
--- a/src/drivers/acpi/thermal_zone/Makefile.inc
+++ b/src/drivers/acpi/thermal_zone/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_ACPI_THERMAL_ZONE) += thermal_zone.c
diff --git a/src/drivers/amd/i2s_machine_dev/Makefile.inc b/src/drivers/amd/i2s_machine_dev/Makefile.inc
index df09f4d016..7d0540f188 100644
--- a/src/drivers/amd/i2s_machine_dev/Makefile.inc
+++ b/src/drivers/amd/i2s_machine_dev/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_AMD_I2S_MACHINE_DEV) += i2s_machine_dev.c
diff --git a/src/drivers/ams/Makefile.inc b/src/drivers/ams/Makefile.inc
index cf5183196c..f1c1345253 100644
--- a/src/drivers/ams/Makefile.inc
+++ b/src/drivers/ams/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_AS3722_RTC) += as3722rtc.c
diff --git a/src/drivers/aspeed/ast2050/Makefile.inc b/src/drivers/aspeed/ast2050/Makefile.inc
index 9e5b5c54ee..3523d7a1ae 100644
--- a/src/drivers/aspeed/ast2050/Makefile.inc
+++ b/src/drivers/aspeed/ast2050/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_ASPEED_AST2050) += ast2050.c
diff --git a/src/drivers/aspeed/common/Makefile.inc b/src/drivers/aspeed/common/Makefile.inc
index 1f4b858a5a..f52b5e096a 100644
--- a/src/drivers/aspeed/common/Makefile.inc
+++ b/src/drivers/aspeed/common/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_DRIVERS_ASPEED_AST_COMMON),y)
 ramstage-y += ast_dp501.c ast_main.c ast_post.c
 ramstage-$(CONFIG_GENERIC_LINEAR_FRAMEBUFFER) += ast_mode.c ast_i2c.c ast_mode_corebootfb.c
diff --git a/src/drivers/camera/Makefile.inc b/src/drivers/camera/Makefile.inc
index 1a6e609465..f2c6eff270 100644
--- a/src/drivers/camera/Makefile.inc
+++ b/src/drivers/camera/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_CHROMEOS_CAMERA) += cros_camera.c
diff --git a/src/drivers/crb/Makefile.inc b/src/drivers/crb/Makefile.inc
index 5124514cca..d7e8b74ebf 100644
--- a/src/drivers/crb/Makefile.inc
+++ b/src/drivers/crb/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_CRB_TPM),y)
 all-y += tis.c tpm.c
 endif
diff --git a/src/drivers/elog/Makefile.inc b/src/drivers/elog/Makefile.inc
index 370eef44d1..7bc229caf7 100644
--- a/src/drivers/elog/Makefile.inc
+++ b/src/drivers/elog/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-$(CONFIG_ELOG) += elog.c
 verstage-$(CONFIG_ELOG) += elog.c
 romstage-$(CONFIG_ELOG) += elog.c
diff --git a/src/drivers/emulation/qemu/Makefile.inc b/src/drivers/emulation/qemu/Makefile.inc
index d9db1304bb..6f5ff3a1d6 100644
--- a/src/drivers/emulation/qemu/Makefile.inc
+++ b/src/drivers/emulation/qemu/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-$(CONFIG_CONSOLE_QEMU_DEBUGCON) += qemu_debugcon.c
 romstage-$(CONFIG_CONSOLE_QEMU_DEBUGCON) += qemu_debugcon.c
 postcar-$(CONFIG_CONSOLE_QEMU_DEBUGCON) += qemu_debugcon.c
diff --git a/src/drivers/generic/adau7002/Makefile.inc b/src/drivers/generic/adau7002/Makefile.inc
index b2f7dfef52..3b88a39daf 100644
--- a/src/drivers/generic/adau7002/Makefile.inc
+++ b/src/drivers/generic/adau7002/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_ADAU7002) += adau7002.c
diff --git a/src/drivers/generic/alc1015/Makefile.inc b/src/drivers/generic/alc1015/Makefile.inc
index 5f815863dc..f4f47878ea 100644
--- a/src/drivers/generic/alc1015/Makefile.inc
+++ b/src/drivers/generic/alc1015/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_ALC1015) += alc1015.c
diff --git a/src/drivers/generic/bayhub/Makefile.inc b/src/drivers/generic/bayhub/Makefile.inc
index 3458815831..90b442617e 100644
--- a/src/drivers/generic/bayhub/Makefile.inc
+++ b/src/drivers/generic/bayhub/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_BH720) += bh720.c
diff --git a/src/drivers/generic/bayhub_lv2/Makefile.inc b/src/drivers/generic/bayhub_lv2/Makefile.inc
index 11249a9262..b8842085aa 100644
--- a/src/drivers/generic/bayhub_lv2/Makefile.inc
+++ b/src/drivers/generic/bayhub_lv2/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_BAYHUB_LV2) += lv2.c
diff --git a/src/drivers/generic/cbfs-serial/Makefile.inc b/src/drivers/generic/cbfs-serial/Makefile.inc
index 163d439ba9..fdabdc8f53 100644
--- a/src/drivers/generic/cbfs-serial/Makefile.inc
+++ b/src/drivers/generic/cbfs-serial/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_CBFS_SERIAL) += cbfs-serial.c
diff --git a/src/drivers/generic/cbfs-uuid/Makefile.inc b/src/drivers/generic/cbfs-uuid/Makefile.inc
index b1344076dd..df8c0960b9 100644
--- a/src/drivers/generic/cbfs-uuid/Makefile.inc
+++ b/src/drivers/generic/cbfs-uuid/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_CBFS_UUID) += cbfs-uuid.c
diff --git a/src/drivers/generic/gpio_keys/Makefile.inc b/src/drivers/generic/gpio_keys/Makefile.inc
index 1e10ca99e0..d1375ef2e4 100644
--- a/src/drivers/generic/gpio_keys/Makefile.inc
+++ b/src/drivers/generic/gpio_keys/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_GPIO_KEYS) += gpio_keys.c
diff --git a/src/drivers/generic/max98357a/Makefile.inc b/src/drivers/generic/max98357a/Makefile.inc
index 529e24afc9..8ad86d3c7d 100644
--- a/src/drivers/generic/max98357a/Makefile.inc
+++ b/src/drivers/generic/max98357a/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_MAX98357A) += max98357a.c
diff --git a/src/drivers/generic/nau8315/Makefile.inc b/src/drivers/generic/nau8315/Makefile.inc
index 09641892e5..094d235b6d 100644
--- a/src/drivers/generic/nau8315/Makefile.inc
+++ b/src/drivers/generic/nau8315/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENERIC_NAU8315) += nau8315.c
diff --git a/src/drivers/genesyslogic/gl9750/Makefile.inc b/src/drivers/genesyslogic/gl9750/Makefile.inc
index 0f771cc335..0b357b83c9 100644
--- a/src/drivers/genesyslogic/gl9750/Makefile.inc
+++ b/src/drivers/genesyslogic/gl9750/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENESYSLOGIC_GL9750) += gl9750.c
diff --git a/src/drivers/genesyslogic/gl9755/Makefile.inc b/src/drivers/genesyslogic/gl9755/Makefile.inc
index 995cfd30f6..f7e7d207b6 100644
--- a/src/drivers/genesyslogic/gl9755/Makefile.inc
+++ b/src/drivers/genesyslogic/gl9755/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENESYSLOGIC_GL9755) += gl9755.c
diff --git a/src/drivers/genesyslogic/gl9763e/Makefile.inc b/src/drivers/genesyslogic/gl9763e/Makefile.inc
index 61a63e6231..a148b8f9f3 100644
--- a/src/drivers/genesyslogic/gl9763e/Makefile.inc
+++ b/src/drivers/genesyslogic/gl9763e/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GENESYSLOGIC_GL9763E) += gl9763e.c
diff --git a/src/drivers/gfx/generic/Makefile.inc b/src/drivers/gfx/generic/Makefile.inc
index 4ffe8dcc80..a63226b292 100644
--- a/src/drivers/gfx/generic/Makefile.inc
+++ b/src/drivers/gfx/generic/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_GFX_GENERIC) += generic.c
diff --git a/src/drivers/i2c/at24rf08c/Makefile.inc b/src/drivers/i2c/at24rf08c/Makefile.inc
index 985aa685a3..4ac3f1d75f 100644
--- a/src/drivers/i2c/at24rf08c/Makefile.inc
+++ b/src/drivers/i2c/at24rf08c/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVER_LENOVO_SERIALS) += at24rf08c.c
 ramstage-$(CONFIG_DRIVER_LENOVO_SERIALS) += lenovo_serials.c
diff --git a/src/drivers/i2c/ck505/Makefile.inc b/src/drivers/i2c/ck505/Makefile.inc
index 5ccf4a86cd..44df26c477 100644
--- a/src/drivers/i2c/ck505/Makefile.inc
+++ b/src/drivers/i2c/ck505/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_CK505) += ck505.c
diff --git a/src/drivers/i2c/cs35l53/Makefile.inc b/src/drivers/i2c/cs35l53/Makefile.inc
index 21a749f199..d088e7f71d 100644
--- a/src/drivers/i2c/cs35l53/Makefile.inc
+++ b/src/drivers/i2c/cs35l53/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_CS35L53) += cs35l53.c
diff --git a/src/drivers/i2c/cs42l42/Makefile.inc b/src/drivers/i2c/cs42l42/Makefile.inc
index 05ab562a1b..b7df181ab1 100644
--- a/src/drivers/i2c/cs42l42/Makefile.inc
+++ b/src/drivers/i2c/cs42l42/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_CS42L42) += cs42l42.c
diff --git a/src/drivers/i2c/da7219/Makefile.inc b/src/drivers/i2c/da7219/Makefile.inc
index 354a330b23..e885506424 100644
--- a/src/drivers/i2c/da7219/Makefile.inc
+++ b/src/drivers/i2c/da7219/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_DA7219) += da7219.c
diff --git a/src/drivers/i2c/designware/Makefile.inc b/src/drivers/i2c/designware/Makefile.inc
index b960a1cac4..9c084c0de5 100644
--- a/src/drivers/i2c/designware/Makefile.inc
+++ b/src/drivers/i2c/designware/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_DRIVERS_I2C_DESIGNWARE),y)
 
 bootblock-y += dw_i2c.c
diff --git a/src/drivers/i2c/generic/Makefile.inc b/src/drivers/i2c/generic/Makefile.inc
index 86cbc7bdc3..228a75b26d 100644
--- a/src/drivers/i2c/generic/Makefile.inc
+++ b/src/drivers/i2c/generic/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_GENERIC) += generic.c
diff --git a/src/drivers/i2c/gpiomux/Makefile.inc b/src/drivers/i2c/gpiomux/Makefile.inc
index 5c328cba40..a22726c5da 100644
--- a/src/drivers/i2c/gpiomux/Makefile.inc
+++ b/src/drivers/i2c/gpiomux/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 subdirs-$(CONFIG_DRIVERS_I2C_GPIO_MUX) += mux
 subdirs-$(CONFIG_DRIVERS_I2C_GPIO_MUX) += bus
diff --git a/src/drivers/i2c/gpiomux/bus/Makefile.inc b/src/drivers/i2c/gpiomux/bus/Makefile.inc
index 1c462dc094..49d9d8c458 100644
--- a/src/drivers/i2c/gpiomux/bus/Makefile.inc
+++ b/src/drivers/i2c/gpiomux/bus/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_GPIO_MUX) += bus.c
diff --git a/src/drivers/i2c/gpiomux/mux/Makefile.inc b/src/drivers/i2c/gpiomux/mux/Makefile.inc
index e51f706eda..10e1d8b5dc 100644
--- a/src/drivers/i2c/gpiomux/mux/Makefile.inc
+++ b/src/drivers/i2c/gpiomux/mux/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_GPIO_MUX) += mux.c
diff --git a/src/drivers/i2c/hid/Makefile.inc b/src/drivers/i2c/hid/Makefile.inc
index 12162acee0..897d90cd47 100644
--- a/src/drivers/i2c/hid/Makefile.inc
+++ b/src/drivers/i2c/hid/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_HID) += hid.c
diff --git a/src/drivers/i2c/lm96000/Makefile.inc b/src/drivers/i2c/lm96000/Makefile.inc
index b17ccf88cf..75149d4193 100644
--- a/src/drivers/i2c/lm96000/Makefile.inc
+++ b/src/drivers/i2c/lm96000/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_LM96000) += lm96000.c
diff --git a/src/drivers/i2c/max98373/Makefile.inc b/src/drivers/i2c/max98373/Makefile.inc
index 0a8871d987..0786e9a79c 100644
--- a/src/drivers/i2c/max98373/Makefile.inc
+++ b/src/drivers/i2c/max98373/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_MAX98373) += max98373.c
diff --git a/src/drivers/i2c/max98390/Makefile.inc b/src/drivers/i2c/max98390/Makefile.inc
index 09ef81b9ea..de9fb65cb5 100644
--- a/src/drivers/i2c/max98390/Makefile.inc
+++ b/src/drivers/i2c/max98390/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_MAX98390) += max98390.c
diff --git a/src/drivers/i2c/max98396/Makefile.inc b/src/drivers/i2c/max98396/Makefile.inc
index 230f5d6d91..aa71437449 100644
--- a/src/drivers/i2c/max98396/Makefile.inc
+++ b/src/drivers/i2c/max98396/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_MAX98396) += max98396.c
diff --git a/src/drivers/i2c/max98927/Makefile.inc b/src/drivers/i2c/max98927/Makefile.inc
index 3bafee11b6..c84f7caa4f 100644
--- a/src/drivers/i2c/max98927/Makefile.inc
+++ b/src/drivers/i2c/max98927/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_MAX98927) += max98927.c
diff --git a/src/drivers/i2c/nau8825/Makefile.inc b/src/drivers/i2c/nau8825/Makefile.inc
index 6f32643439..ada57689bd 100644
--- a/src/drivers/i2c/nau8825/Makefile.inc
+++ b/src/drivers/i2c/nau8825/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_NAU8825) += nau8825.c
diff --git a/src/drivers/i2c/nct7802y/Makefile.inc b/src/drivers/i2c/nct7802y/Makefile.inc
index 9544de0b3e..bb91e5027e 100644
--- a/src/drivers/i2c/nct7802y/Makefile.inc
+++ b/src/drivers/i2c/nct7802y/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_NCT7802Y) += nct7802y.c
 ramstage-$(CONFIG_DRIVERS_I2C_NCT7802Y) += nct7802y_fan.c
 ramstage-$(CONFIG_DRIVERS_I2C_NCT7802Y) += nct7802y_peci.c
diff --git a/src/drivers/i2c/pca9538/Makefile.inc b/src/drivers/i2c/pca9538/Makefile.inc
index 51e9764b98..63d9bc8296 100644
--- a/src/drivers/i2c/pca9538/Makefile.inc
+++ b/src/drivers/i2c/pca9538/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_PCA9538) += pca9538.c
diff --git a/src/drivers/i2c/pi608gp/Makefile.inc b/src/drivers/i2c/pi608gp/Makefile.inc
index 21516a6d46..837e63662b 100644
--- a/src/drivers/i2c/pi608gp/Makefile.inc
+++ b/src/drivers/i2c/pi608gp/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_PI608GP) += pi608gp.c
diff --git a/src/drivers/i2c/ptn3460/Makefile.inc b/src/drivers/i2c/ptn3460/Makefile.inc
index abe9a0560b..022f5f8e52 100644
--- a/src/drivers/i2c/ptn3460/Makefile.inc
+++ b/src/drivers/i2c/ptn3460/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_PTN3460) += ptn3460.c
diff --git a/src/drivers/i2c/rt1011/Makefile.inc b/src/drivers/i2c/rt1011/Makefile.inc
index a8b8283f3f..39572b6b91 100644
--- a/src/drivers/i2c/rt1011/Makefile.inc
+++ b/src/drivers/i2c/rt1011/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_RT1011) += rt1011.c
diff --git a/src/drivers/i2c/rt5663/Makefile.inc b/src/drivers/i2c/rt5663/Makefile.inc
index 35c566b976..ffd17fcd6f 100644
--- a/src/drivers/i2c/rt5663/Makefile.inc
+++ b/src/drivers/i2c/rt5663/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_RT5663) += rt5663.c
diff --git a/src/drivers/i2c/rtd2132/Makefile.inc b/src/drivers/i2c/rtd2132/Makefile.inc
index 4974a479ce..133b6c821c 100644
--- a/src/drivers/i2c/rtd2132/Makefile.inc
+++ b/src/drivers/i2c/rtd2132/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_RTD2132) += rtd2132.c
diff --git a/src/drivers/i2c/rv3028c7/Makefile.inc b/src/drivers/i2c/rv3028c7/Makefile.inc
index 57eddf39c5..f511bc5013 100644
--- a/src/drivers/i2c/rv3028c7/Makefile.inc
+++ b/src/drivers/i2c/rv3028c7/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_RV3028C7) += rv3028c7.c
diff --git a/src/drivers/i2c/rx6110sa/Makefile.inc b/src/drivers/i2c/rx6110sa/Makefile.inc
index 44c76a3291..45d179da4f 100644
--- a/src/drivers/i2c/rx6110sa/Makefile.inc
+++ b/src/drivers/i2c/rx6110sa/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_RX6110SA) += rx6110sa.c
diff --git a/src/drivers/i2c/sx9310/Makefile.inc b/src/drivers/i2c/sx9310/Makefile.inc
index 0516df92f7..75d577bed7 100644
--- a/src/drivers/i2c/sx9310/Makefile.inc
+++ b/src/drivers/i2c/sx9310/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_SX9310) += sx9310.c
diff --git a/src/drivers/i2c/sx9324/Makefile.inc b/src/drivers/i2c/sx9324/Makefile.inc
index 8811c996b0..963d230646 100644
--- a/src/drivers/i2c/sx9324/Makefile.inc
+++ b/src/drivers/i2c/sx9324/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_SX9324) += sx9324.c
diff --git a/src/drivers/i2c/sx9360/Makefile.inc b/src/drivers/i2c/sx9360/Makefile.inc
index 695bb527c7..278ee10b3a 100644
--- a/src/drivers/i2c/sx9360/Makefile.inc
+++ b/src/drivers/i2c/sx9360/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_SX9360) += sx9360.c
diff --git a/src/drivers/i2c/tas5825m/Makefile.inc b/src/drivers/i2c/tas5825m/Makefile.inc
index 909ffdb85c..0e1e7a2ba0 100644
--- a/src/drivers/i2c/tas5825m/Makefile.inc
+++ b/src/drivers/i2c/tas5825m/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_I2C_TAS5825M) += tas5825m.c
diff --git a/src/drivers/i2c/tpm/Makefile.inc b/src/drivers/i2c/tpm/Makefile.inc
index ae50f2b342..f576109eed 100644
--- a/src/drivers/i2c/tpm/Makefile.inc
+++ b/src/drivers/i2c/tpm/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_TPM)$(CONFIG_I2C_TPM),yy)
 
 all-$(CONFIG_DRIVER_TIS_DEFAULT) += tis.c
diff --git a/src/drivers/i2c/ww_ring/Makefile.inc b/src/drivers/i2c/ww_ring/Makefile.inc
index ea0d1a880b..b245e5fa7c 100644
--- a/src/drivers/i2c/ww_ring/Makefile.inc
+++ b/src/drivers/i2c/ww_ring/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 verstage-$(CONFIG_DRIVERS_I2C_WW_RING) += ww_ring.c
 verstage-$(CONFIG_DRIVERS_I2C_WW_RING) += ww_ring_programs.c
 
diff --git a/src/drivers/intel/dptf/Makefile.inc b/src/drivers/intel/dptf/Makefile.inc
index 42607f8a54..41f4158722 100644
--- a/src/drivers/intel/dptf/Makefile.inc
+++ b/src/drivers/intel/dptf/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_INTEL_DPTF) += dptf.c
diff --git a/src/drivers/intel/ish/Makefile.inc b/src/drivers/intel/ish/Makefile.inc
index cab2b1d804..dfa4b1c444 100644
--- a/src/drivers/intel/ish/Makefile.inc
+++ b/src/drivers/intel/ish/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_INTEL_ISH) += ish.c
diff --git a/src/drivers/intel/mipi_camera/Makefile.inc b/src/drivers/intel/mipi_camera/Makefile.inc
index 85f67b2606..fca8326307 100644
--- a/src/drivers/intel/mipi_camera/Makefile.inc
+++ b/src/drivers/intel/mipi_camera/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_INTEL_MIPI_CAMERA) += camera.c
diff --git a/src/drivers/intel/pmc_mux/Makefile.inc b/src/drivers/intel/pmc_mux/Makefile.inc
index 61c957e514..f607135dea 100644
--- a/src/drivers/intel/pmc_mux/Makefile.inc
+++ b/src/drivers/intel/pmc_mux/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 subdirs-y += conn
 ramstage-$(CONFIG_DRIVERS_INTEL_PMC) += mux.c
diff --git a/src/drivers/intel/pmc_mux/conn/Makefile.inc b/src/drivers/intel/pmc_mux/conn/Makefile.inc
index babca2f9bb..668351b4df 100644
--- a/src/drivers/intel/pmc_mux/conn/Makefile.inc
+++ b/src/drivers/intel/pmc_mux/conn/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_INTEL_PMC) += conn.c
diff --git a/src/drivers/intel/ptt/Makefile.inc b/src/drivers/intel/ptt/Makefile.inc
index fdecc89b9f..bab1789fd9 100644
--- a/src/drivers/intel/ptt/Makefile.inc
+++ b/src/drivers/intel/ptt/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 romstage-$(CONFIG_HAVE_INTEL_PTT) += ptt.c
 ramstage-$(CONFIG_HAVE_INTEL_PTT) += ptt.c
 postcar-$(CONFIG_HAVE_INTEL_PTT) += ptt.c
diff --git a/src/drivers/intel/soundwire/Makefile.inc b/src/drivers/intel/soundwire/Makefile.inc
index 1f6773ec26..044e2ab8e9 100644
--- a/src/drivers/intel/soundwire/Makefile.inc
+++ b/src/drivers/intel/soundwire/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_INTEL_SOUNDWIRE) += soundwire.c
diff --git a/src/drivers/intel/usb4/retimer/Makefile.inc b/src/drivers/intel/usb4/retimer/Makefile.inc
index bca23aa3bf..1c814850bd 100644
--- a/src/drivers/intel/usb4/retimer/Makefile.inc
+++ b/src/drivers/intel/usb4/retimer/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_INTEL_USB4_RETIMER) += retimer.c
diff --git a/src/drivers/ipmi/Makefile.inc b/src/drivers/ipmi/Makefile.inc
index 28ff78c085..ade7147030 100644
--- a/src/drivers/ipmi/Makefile.inc
+++ b/src/drivers/ipmi/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_IPMI_KCS) += ipmi_if.c
 ramstage-$(CONFIG_IPMI_KCS) += ipmi_kcs.c
 ramstage-$(CONFIG_IPMI_KCS) += ipmi_kcs_ops.c
diff --git a/src/drivers/ipmi/ocp/Makefile.inc b/src/drivers/ipmi/ocp/Makefile.inc
index 3d5e69eb12..8141ed6876 100644
--- a/src/drivers/ipmi/ocp/Makefile.inc
+++ b/src/drivers/ipmi/ocp/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_IPMI_OCP) += ipmi_ocp.c ipmi_sel.c
 ifeq ($(CONFIG_IPMI_OCP),y)
 romstage-$(CONFIG_IPMI_KCS_ROMSTAGE) += ipmi_ocp_romstage.c ipmi_sel.c
diff --git a/src/drivers/lenovo/Makefile.inc b/src/drivers/lenovo/Makefile.inc
index c50db5b8be..0b62460db2 100644
--- a/src/drivers/lenovo/Makefile.inc
+++ b/src/drivers/lenovo/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_LENOVO_WACOM) += wacom.c
diff --git a/src/drivers/mrc_cache/Makefile.inc b/src/drivers/mrc_cache/Makefile.inc
index 0d226fe89a..44cd1f2f5a 100644
--- a/src/drivers/mrc_cache/Makefile.inc
+++ b/src/drivers/mrc_cache/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 romstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c
 ramstage-$(CONFIG_CACHE_MRC_SETTINGS) += mrc_cache.c
diff --git a/src/drivers/net/Makefile.inc b/src/drivers/net/Makefile.inc
index 33c82118d9..a17547c6e0 100644
--- a/src/drivers/net/Makefile.inc
+++ b/src/drivers/net/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 romstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c
 ramstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c
 ramstage-$(CONFIG_REALTEK_8168_RESET) += r8168.c
diff --git a/src/drivers/net/phy/m88e1512/Makefile.inc b/src/drivers/net/phy/m88e1512/Makefile.inc
index 043b3a3aed..a0433f56f4 100644
--- a/src/drivers/net/phy/m88e1512/Makefile.inc
+++ b/src/drivers/net/phy/m88e1512/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_ETH_PHY_M88E1512) += m88e1512.c
diff --git a/src/drivers/nxp/uwb/Makefile.inc b/src/drivers/nxp/uwb/Makefile.inc
index 9501a28c32..b81f7e257d 100644
--- a/src/drivers/nxp/uwb/Makefile.inc
+++ b/src/drivers/nxp/uwb/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_NXP_UWB_SR1XX) += uwb.c
diff --git a/src/drivers/ocp/dmi/Makefile.inc b/src/drivers/ocp/dmi/Makefile.inc
index 587ac89d00..bce5bceda0 100644
--- a/src/drivers/ocp/dmi/Makefile.inc
+++ b/src/drivers/ocp/dmi/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_OCP_DMI) += smbios.c
diff --git a/src/drivers/ocp/ewl/Makefile.inc b/src/drivers/ocp/ewl/Makefile.inc
index 43112e94f1..2b3ffb6d31 100644
--- a/src/drivers/ocp/ewl/Makefile.inc
+++ b/src/drivers/ocp/ewl/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 romstage-$(CONFIG_OCP_EWL) += ewl.c
diff --git a/src/drivers/ocp/vpd/Makefile.inc b/src/drivers/ocp/vpd/Makefile.inc
index b40534aec4..1cdc63b524 100644
--- a/src/drivers/ocp/vpd/Makefile.inc
+++ b/src/drivers/ocp/vpd/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 romstage-$(CONFIG_OCP_VPD) += vpd_util.c
 ramstage-$(CONFIG_OCP_VPD) += vpd_util.c
 ramstage-$(CONFIG_LINUXPAYLOAD_CMDLINE_VPD_OVERWRITE) += vpd_cmdline.c
diff --git a/src/drivers/pc80/pc/Makefile.inc b/src/drivers/pc80/pc/Makefile.inc
index 7cf2957e7b..c5060116a7 100644
--- a/src/drivers/pc80/pc/Makefile.inc
+++ b/src/drivers/pc80/pc/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_ARCH_X86),y)
 
 ramstage-y += isa-dma.c
diff --git a/src/drivers/pc80/rtc/Makefile.inc b/src/drivers/pc80/rtc/Makefile.inc
index 5f6055e872..9d248780b1 100644
--- a/src/drivers/pc80/rtc/Makefile.inc
+++ b/src/drivers/pc80/rtc/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_ARCH_X86),y)
 
 all-$(CONFIG_DRIVERS_MC146818)	+= mc146818rtc_boot.c
diff --git a/src/drivers/pc80/tpm/Makefile.inc b/src/drivers/pc80/tpm/Makefile.inc
index 859233712b..384bc40e70 100644
--- a/src/drivers/pc80/tpm/Makefile.inc
+++ b/src/drivers/pc80/tpm/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_MEMORY_MAPPED_TPM),y)
 all-y += tis.c
 endif
diff --git a/src/drivers/pc80/vga/Makefile.inc b/src/drivers/pc80/vga/Makefile.inc
index f7ec2b5025..63ec6ba6ae 100644
--- a/src/drivers/pc80/vga/Makefile.inc
+++ b/src/drivers/pc80/vga/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_ARCH_X86),y)
 
 romstage-$(CONFIG_ROMSTAGE_VGA) += vga_io.c
diff --git a/src/drivers/pcie/generic/Makefile.inc b/src/drivers/pcie/generic/Makefile.inc
index f634f256a8..fd08d37639 100644
--- a/src/drivers/pcie/generic/Makefile.inc
+++ b/src/drivers/pcie/generic/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_PCIE_GENERIC) += generic.c
diff --git a/src/drivers/pcie/rtd3/device/Makefile.inc b/src/drivers/pcie/rtd3/device/Makefile.inc
index df4aaf63ab..23b17ec2fd 100644
--- a/src/drivers/pcie/rtd3/device/Makefile.inc
+++ b/src/drivers/pcie/rtd3/device/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_PCIE_RTD3_DEVICE) += chip.c
diff --git a/src/drivers/ricoh/rce822/Makefile.inc b/src/drivers/ricoh/rce822/Makefile.inc
index 738bd0e29f..fb30a453e6 100644
--- a/src/drivers/ricoh/rce822/Makefile.inc
+++ b/src/drivers/ricoh/rce822/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_RICOH_RCE822) += rce822.c
diff --git a/src/drivers/secunet/dmi/Makefile.inc b/src/drivers/secunet/dmi/Makefile.inc
index 9c85485d1e..6f126875a4 100644
--- a/src/drivers/secunet/dmi/Makefile.inc
+++ b/src/drivers/secunet/dmi/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_SECUNET_DMI) += smbios.c
diff --git a/src/drivers/sil/3114/Makefile.inc b/src/drivers/sil/3114/Makefile.inc
index a3f3ffb328..0d151e4bc6 100644
--- a/src/drivers/sil/3114/Makefile.inc
+++ b/src/drivers/sil/3114/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SIL_3114) += sil_sata.c
diff --git a/src/drivers/smbus/Makefile.inc b/src/drivers/smbus/Makefile.inc
index d478889b66..251dc6565d 100644
--- a/src/drivers/smbus/Makefile.inc
+++ b/src/drivers/smbus/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_SC16IS7XX_INIT),y)
 bootblock-y += sc16is7xx_init.c
 romstage-y += sc16is7xx_init.c
diff --git a/src/drivers/smmstore/Makefile.inc b/src/drivers/smmstore/Makefile.inc
index b37637b2b5..4f69751d74 100644
--- a/src/drivers/smmstore/Makefile.inc
+++ b/src/drivers/smmstore/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 all-$(CONFIG_SMMSTORE) += store.c
 
 ramstage-$(CONFIG_SMMSTORE_V2) += ramstage.c
diff --git a/src/drivers/sof/Makefile.inc b/src/drivers/sof/Makefile.inc
index 6faabe4500..5682511e9f 100644
--- a/src/drivers/sof/Makefile.inc
+++ b/src/drivers/sof/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_AUDIO_SOF) += sof.c
diff --git a/src/drivers/soundwire/alc1308/Makefile.inc b/src/drivers/soundwire/alc1308/Makefile.inc
index 6c3458fa0e..f6430d88e7 100644
--- a/src/drivers/soundwire/alc1308/Makefile.inc
+++ b/src/drivers/soundwire/alc1308/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_ALC1308) += alc1308.c
diff --git a/src/drivers/soundwire/alc5682/Makefile.inc b/src/drivers/soundwire/alc5682/Makefile.inc
index eab940cbb1..38a97093ce 100644
--- a/src/drivers/soundwire/alc5682/Makefile.inc
+++ b/src/drivers/soundwire/alc5682/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_ALC5682) += alc5682.c
diff --git a/src/drivers/soundwire/alc711/Makefile.inc b/src/drivers/soundwire/alc711/Makefile.inc
index 78e4d1b7fe..63e0993435 100644
--- a/src/drivers/soundwire/alc711/Makefile.inc
+++ b/src/drivers/soundwire/alc711/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_ALC711) += alc711.c
diff --git a/src/drivers/soundwire/cs42l42/Makefile.inc b/src/drivers/soundwire/cs42l42/Makefile.inc
index b2475b89d4..b7c2261627 100644
--- a/src/drivers/soundwire/cs42l42/Makefile.inc
+++ b/src/drivers/soundwire/cs42l42/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_CS42L42) += cs42l42.c
diff --git a/src/drivers/soundwire/max98363/Makefile.inc b/src/drivers/soundwire/max98363/Makefile.inc
index 5501eb3d10..9c77f46e30 100644
--- a/src/drivers/soundwire/max98363/Makefile.inc
+++ b/src/drivers/soundwire/max98363/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_MAX98363) += max98363.c
diff --git a/src/drivers/soundwire/max98373/Makefile.inc b/src/drivers/soundwire/max98373/Makefile.inc
index 41c784d2ee..c1efb73dfe 100644
--- a/src/drivers/soundwire/max98373/Makefile.inc
+++ b/src/drivers/soundwire/max98373/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_MAX98373) += max98373.c
diff --git a/src/drivers/spi/Makefile.inc b/src/drivers/spi/Makefile.inc
index 56ee44bd47..3a52d8a8c7 100644
--- a/src/drivers/spi/Makefile.inc
+++ b/src/drivers/spi/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 # SPI flash driver interface
 
 subdirs-y += tpm
diff --git a/src/drivers/spi/tpm/Makefile.inc b/src/drivers/spi/tpm/Makefile.inc
index 023479f0d0..e7a5d6369c 100644
--- a/src/drivers/spi/tpm/Makefile.inc
+++ b/src/drivers/spi/tpm/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_TPM)$(CONFIG_SPI_TPM),yy)
 all-y += tis.c tpm.c
 endif
diff --git a/src/drivers/tpm/Makefile.inc b/src/drivers/tpm/Makefile.inc
index 7f0bbf59b2..3ed5173db7 100644
--- a/src/drivers/tpm/Makefile.inc
+++ b/src/drivers/tpm/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_TPM),y)
 
 ramstage-$(CONFIG_TPM_INIT_RAMSTAGE) += tpm.c
diff --git a/src/drivers/uart/Makefile.inc b/src/drivers/uart/Makefile.inc
index 912a6847d9..9fd1fb3998 100644
--- a/src/drivers/uart/Makefile.inc
+++ b/src/drivers/uart/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ifeq ($(CONFIG_DRIVERS_UART),y)
 
 romstage-y += util.c
diff --git a/src/drivers/uart/acpi/Makefile.inc b/src/drivers/uart/acpi/Makefile.inc
index 848deac9b9..3cf4514d21 100644
--- a/src/drivers/uart/acpi/Makefile.inc
+++ b/src/drivers/uart/acpi/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_UART_ACPI) += acpi.c
diff --git a/src/drivers/usb/Makefile.inc b/src/drivers/usb/Makefile.inc
index fa995c33cc..3c29545223 100644
--- a/src/drivers/usb/Makefile.inc
+++ b/src/drivers/usb/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-$(CONFIG_USBDEBUG) += ehci_debug.c pci_ehci.c console.c gadget.c
 verstage-$(CONFIG_USBDEBUG) += ehci_debug.c console.c
 romstage-$(CONFIG_USBDEBUG) += ehci_debug.c pci_ehci.c console.c gadget.c
diff --git a/src/drivers/usb/acpi/Makefile.inc b/src/drivers/usb/acpi/Makefile.inc
index 2e111078ad..e525b466c9 100644
--- a/src/drivers/usb/acpi/Makefile.inc
+++ b/src/drivers/usb/acpi/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_USB_ACPI) += usb_acpi.c
diff --git a/src/drivers/usb/hub/Makefile.inc b/src/drivers/usb/hub/Makefile.inc
index a64d622a03..3222a81db3 100644
--- a/src/drivers/usb/hub/Makefile.inc
+++ b/src/drivers/usb/hub/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_USB_HUB) += acpi.c
diff --git a/src/drivers/usb/pci_xhci/Makefile.inc b/src/drivers/usb/pci_xhci/Makefile.inc
index 73f6b068a8..4f9187baa8 100644
--- a/src/drivers/usb/pci_xhci/Makefile.inc
+++ b/src/drivers/usb/pci_xhci/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_USB_PCI_XHCI) += pci_xhci.c
diff --git a/src/drivers/wifi/generic/Makefile.inc b/src/drivers/wifi/generic/Makefile.inc
index 91f22d163e..337b8fe1ec 100644
--- a/src/drivers/wifi/generic/Makefile.inc
+++ b/src/drivers/wifi/generic/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 
 ifeq ($(CONFIG_DRIVERS_WIFI_GENERIC),y)
 
diff --git a/src/drivers/wwan/fm/Makefile.inc b/src/drivers/wwan/fm/Makefile.inc
index 8074a0869a..cc3ff3d615 100644
--- a/src/drivers/wwan/fm/Makefile.inc
+++ b/src/drivers/wwan/fm/Makefile.inc
@@ -1 +1,3 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 ramstage-$(CONFIG_DRIVERS_WWAN_FM350GL) += acpi_fm350gl.c