Felix Held submitted this change.

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mb/google/cyan: Use SPDX for GPL-2.0-only files

Done with sed and God Lines. Only done for C-like code for now.

Change-Id: I1122cdc74a71be6d108998fe7027033394ed6459
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40167
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
---
M src/mainboard/google/cyan/acpi/codec_maxim.asl
M src/mainboard/google/cyan/acpi/codec_realtek.asl
M src/mainboard/google/cyan/acpi/dptf.asl
M src/mainboard/google/cyan/acpi/ec.asl
M src/mainboard/google/cyan/acpi/mainboard.asl
M src/mainboard/google/cyan/acpi/superio.asl
M src/mainboard/google/cyan/acpi/touchscreen_elan.asl
M src/mainboard/google/cyan/acpi/touchscreen_melfas.asl
M src/mainboard/google/cyan/acpi/touchscreen_synaptics.asl
M src/mainboard/google/cyan/acpi/trackpad_atmel.asl
M src/mainboard/google/cyan/acpi/trackpad_elan.asl
M src/mainboard/google/cyan/acpi_tables.c
M src/mainboard/google/cyan/chromeos.c
M src/mainboard/google/cyan/com_init.c
M src/mainboard/google/cyan/dsdt.asl
M src/mainboard/google/cyan/ec.c
M src/mainboard/google/cyan/ec.h
M src/mainboard/google/cyan/fadt.c
M src/mainboard/google/cyan/irqroute.c
M src/mainboard/google/cyan/irqroute.h
M src/mainboard/google/cyan/mainboard.c
M src/mainboard/google/cyan/romstage.c
M src/mainboard/google/cyan/smihandler.c
M src/mainboard/google/cyan/spd/spd.c
M src/mainboard/google/cyan/spd/spd_util.h
M src/mainboard/google/cyan/variants/banon/gpio.c
M src/mainboard/google/cyan/variants/banon/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/banon/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/banon/include/variant/onboard.h
M src/mainboard/google/cyan/variants/banon/romstage.c
M src/mainboard/google/cyan/variants/banon/spd_util.c
M src/mainboard/google/cyan/variants/baseboard/include/baseboard/variants.h
M src/mainboard/google/cyan/variants/celes/gpio.c
M src/mainboard/google/cyan/variants/celes/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/celes/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/celes/include/variant/onboard.h
M src/mainboard/google/cyan/variants/celes/ramstage.c
M src/mainboard/google/cyan/variants/celes/spd_util.c
M src/mainboard/google/cyan/variants/cyan/gpio.c
M src/mainboard/google/cyan/variants/cyan/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/cyan/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/cyan/include/variant/onboard.h
M src/mainboard/google/cyan/variants/cyan/spd_util.c
M src/mainboard/google/cyan/variants/edgar/gpio.c
M src/mainboard/google/cyan/variants/edgar/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/edgar/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/edgar/include/variant/onboard.h
M src/mainboard/google/cyan/variants/edgar/romstage.c
M src/mainboard/google/cyan/variants/edgar/spd_util.c
M src/mainboard/google/cyan/variants/kefka/gpio.c
M src/mainboard/google/cyan/variants/kefka/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/kefka/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/kefka/include/variant/onboard.h
M src/mainboard/google/cyan/variants/kefka/ramstage.c
M src/mainboard/google/cyan/variants/kefka/romstage.c
M src/mainboard/google/cyan/variants/kefka/spd_util.c
M src/mainboard/google/cyan/variants/reks/gpio.c
M src/mainboard/google/cyan/variants/reks/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/reks/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/reks/include/variant/onboard.h
M src/mainboard/google/cyan/variants/reks/ramstage.c
M src/mainboard/google/cyan/variants/reks/romstage.c
M src/mainboard/google/cyan/variants/reks/spd_util.c
M src/mainboard/google/cyan/variants/relm/gpio.c
M src/mainboard/google/cyan/variants/relm/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/relm/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/relm/include/variant/onboard.h
M src/mainboard/google/cyan/variants/relm/ramstage.c
M src/mainboard/google/cyan/variants/relm/romstage.c
M src/mainboard/google/cyan/variants/relm/spd_util.c
M src/mainboard/google/cyan/variants/setzer/gpio.c
M src/mainboard/google/cyan/variants/setzer/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/setzer/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/setzer/include/variant/onboard.h
M src/mainboard/google/cyan/variants/setzer/ramstage.c
M src/mainboard/google/cyan/variants/setzer/romstage.c
M src/mainboard/google/cyan/variants/setzer/spd_util.c
M src/mainboard/google/cyan/variants/terra/gpio.c
M src/mainboard/google/cyan/variants/terra/include/variant/acpi/charger.asl
M src/mainboard/google/cyan/variants/terra/include/variant/acpi/cpu.asl
M src/mainboard/google/cyan/variants/terra/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/terra/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/terra/include/variant/acpi/thermal.asl
M src/mainboard/google/cyan/variants/terra/include/variant/onboard.h
M src/mainboard/google/cyan/variants/terra/ramstage.c
M src/mainboard/google/cyan/variants/terra/romstage.c
M src/mainboard/google/cyan/variants/terra/spd_util.c
M src/mainboard/google/cyan/variants/ultima/gpio.c
M src/mainboard/google/cyan/variants/ultima/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/ultima/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/ultima/include/variant/onboard.h
M src/mainboard/google/cyan/variants/ultima/ramstage.c
M src/mainboard/google/cyan/variants/ultima/spd_util.c
M src/mainboard/google/cyan/variants/wizpig/gpio.c
M src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/dptf.asl
M src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/mainboard.asl
M src/mainboard/google/cyan/variants/wizpig/include/variant/onboard.h
M src/mainboard/google/cyan/variants/wizpig/spd_util.c
M src/mainboard/google/cyan/w25q64.c
99 files changed, 198 insertions(+), 1,305 deletions(-)

diff --git a/src/mainboard/google/cyan/acpi/codec_maxim.asl b/src/mainboard/google/cyan/acpi/codec_maxim.asl
index a33f80a..2a790b4 100644
--- a/src/mainboard/google/cyan/acpi/codec_maxim.asl
+++ b/src/mainboard/google/cyan/acpi/codec_maxim.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C2)
 {
diff --git a/src/mainboard/google/cyan/acpi/codec_realtek.asl b/src/mainboard/google/cyan/acpi/codec_realtek.asl
index 34bf109..c5ca297 100644
--- a/src/mainboard/google/cyan/acpi/codec_realtek.asl
+++ b/src/mainboard/google/cyan/acpi/codec_realtek.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C5)
 {
diff --git a/src/mainboard/google/cyan/acpi/dptf.asl b/src/mainboard/google/cyan/acpi/dptf.asl
index 97dd96f..3271754 100644
--- a/src/mainboard/google/cyan/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Include Variant DPTF */
 #include <variant/acpi/dptf.asl>
diff --git a/src/mainboard/google/cyan/acpi/ec.asl b/src/mainboard/google/cyan/acpi/ec.asl
index da185cb..08ab88d 100644
--- a/src/mainboard/google/cyan/acpi/ec.asl
+++ b/src/mainboard/google/cyan/acpi/ec.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* mainboard configuration */
 #include <ec.h>
diff --git a/src/mainboard/google/cyan/acpi/mainboard.asl b/src/mainboard/google/cyan/acpi/mainboard.asl
index 0fc0d94..2c02fbe 100644
--- a/src/mainboard/google/cyan/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <variant/onboard.h>
 
diff --git a/src/mainboard/google/cyan/acpi/superio.asl b/src/mainboard/google/cyan/acpi/superio.asl
index ff98b90..251ef26 100644
--- a/src/mainboard/google/cyan/acpi/superio.asl
+++ b/src/mainboard/google/cyan/acpi/superio.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* mainboard configuration */
 #include <ec.h>
diff --git a/src/mainboard/google/cyan/acpi/touchscreen_elan.asl b/src/mainboard/google/cyan/acpi/touchscreen_elan.asl
index 2b6f148..cac588a 100644
--- a/src/mainboard/google/cyan/acpi/touchscreen_elan.asl
+++ b/src/mainboard/google/cyan/acpi/touchscreen_elan.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C1)
 {
diff --git a/src/mainboard/google/cyan/acpi/touchscreen_melfas.asl b/src/mainboard/google/cyan/acpi/touchscreen_melfas.asl
index 9391be7..3a05914 100644
--- a/src/mainboard/google/cyan/acpi/touchscreen_melfas.asl
+++ b/src/mainboard/google/cyan/acpi/touchscreen_melfas.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C1)
 {
diff --git a/src/mainboard/google/cyan/acpi/touchscreen_synaptics.asl b/src/mainboard/google/cyan/acpi/touchscreen_synaptics.asl
index 7585cb7..4b16952 100644
--- a/src/mainboard/google/cyan/acpi/touchscreen_synaptics.asl
+++ b/src/mainboard/google/cyan/acpi/touchscreen_synaptics.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C1)
 {
diff --git a/src/mainboard/google/cyan/acpi/trackpad_atmel.asl b/src/mainboard/google/cyan/acpi/trackpad_atmel.asl
index a1335d9..a6b82f2 100644
--- a/src/mainboard/google/cyan/acpi/trackpad_atmel.asl
+++ b/src/mainboard/google/cyan/acpi/trackpad_atmel.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C6)
 {
diff --git a/src/mainboard/google/cyan/acpi/trackpad_elan.asl b/src/mainboard/google/cyan/acpi/trackpad_elan.asl
index 9163cff..04e51de 100644
--- a/src/mainboard/google/cyan/acpi/trackpad_elan.asl
+++ b/src/mainboard/google/cyan/acpi/trackpad_elan.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Scope (\_SB.PCI0.I2C6)
 {
diff --git a/src/mainboard/google/cyan/acpi_tables.c b/src/mainboard/google/cyan/acpi_tables.c
index 00b3c08..20d218d 100644
--- a/src/mainboard/google/cyan/acpi_tables.c
+++ b/src/mainboard/google/cyan/acpi_tables.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <arch/acpi.h>
 #include <arch/ioapic.h>
diff --git a/src/mainboard/google/cyan/chromeos.c b/src/mainboard/google/cyan/chromeos.c
index 2968f8d..da41162 100644
--- a/src/mainboard/google/cyan/chromeos.c
+++ b/src/mainboard/google/cyan/chromeos.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <boot/coreboot_tables.h>
 #include <device/mmio.h>
diff --git a/src/mainboard/google/cyan/com_init.c b/src/mainboard/google/cyan/com_init.c
index 8c456d3..5d82115 100644
--- a/src/mainboard/google/cyan/com_init.c
+++ b/src/mainboard/google/cyan/com_init.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <bootblock_common.h>
 #include <device/mmio.h>
diff --git a/src/mainboard/google/cyan/dsdt.asl b/src/mainboard/google/cyan/dsdt.asl
index f9f4940..84544fc 100644
--- a/src/mainboard/google/cyan/dsdt.asl
+++ b/src/mainboard/google/cyan/dsdt.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <arch/acpi.h>
 DefinitionBlock(
diff --git a/src/mainboard/google/cyan/ec.c b/src/mainboard/google/cyan/ec.c
index 8ebd096..55c3e1f 100644
--- a/src/mainboard/google/cyan/ec.c
+++ b/src/mainboard/google/cyan/ec.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <arch/acpi.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/cyan/ec.h b/src/mainboard/google/cyan/ec.h
index 450d863..b93c53f 100644
--- a/src/mainboard/google/cyan/ec.h
+++ b/src/mainboard/google/cyan/ec.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef MAINBOARD_EC_H
 #define MAINBOARD_EC_H
diff --git a/src/mainboard/google/cyan/fadt.c b/src/mainboard/google/cyan/fadt.c
index 9e5af02..8d74667 100644
--- a/src/mainboard/google/cyan/fadt.c
+++ b/src/mainboard/google/cyan/fadt.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/acpi.h>
 #include <string.h>
diff --git a/src/mainboard/google/cyan/irqroute.c b/src/mainboard/google/cyan/irqroute.c
index f0855ad..df43ee9 100644
--- a/src/mainboard/google/cyan/irqroute.c
+++ b/src/mainboard/google/cyan/irqroute.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include "irqroute.h"
 
diff --git a/src/mainboard/google/cyan/irqroute.h b/src/mainboard/google/cyan/irqroute.h
index 85d8a5f..cacabfe 100644
--- a/src/mainboard/google/cyan/irqroute.h
+++ b/src/mainboard/google/cyan/irqroute.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/irq.h>
 #include <soc/pci_devs.h>
diff --git a/src/mainboard/google/cyan/mainboard.c b/src/mainboard/google/cyan/mainboard.c
index 2ef44d4..a87ca8b 100644
--- a/src/mainboard/google/cyan/mainboard.c
+++ b/src/mainboard/google/cyan/mainboard.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <device/device.h>
 #include <vendorcode/google/chromeos/chromeos.h>
diff --git a/src/mainboard/google/cyan/romstage.c b/src/mainboard/google/cyan/romstage.c
index 7116b71..1501c3b 100644
--- a/src/mainboard/google/cyan/romstage.c
+++ b/src/mainboard/google/cyan/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/smihandler.c b/src/mainboard/google/cyan/smihandler.c
index 2871915..8b1032d 100644
--- a/src/mainboard/google/cyan/smihandler.c
+++ b/src/mainboard/google/cyan/smihandler.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <arch/acpi.h>
 #include <arch/io.h>
diff --git a/src/mainboard/google/cyan/spd/spd.c b/src/mainboard/google/cyan/spd/spd.c
index cb65b09..7ceb27d 100644
--- a/src/mainboard/google/cyan/spd/spd.c
+++ b/src/mainboard/google/cyan/spd/spd.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <cbfs.h>
 #include <cbmem.h>
diff --git a/src/mainboard/google/cyan/spd/spd_util.h b/src/mainboard/google/cyan/spd/spd_util.h
index cd65be5..5e13ddf 100644
--- a/src/mainboard/google/cyan/spd/spd_util.h
+++ b/src/mainboard/google/cyan/spd/spd_util.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef SPD_UTIL_H
 #define SPD_UTIL_H
diff --git a/src/mainboard/google/cyan/variants/banon/gpio.c b/src/mainboard/google/cyan/variants/banon/gpio.c
index c0a1cb2..fa1ef88 100644
--- a/src/mainboard/google/cyan/variants/banon/gpio.c
+++ b/src/mainboard/google/cyan/variants/banon/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/banon/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/banon/include/variant/acpi/dptf.asl
index 9be7ba5..6a7a094 100644
--- a/src/mainboard/google/cyan/variants/banon/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/banon/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
diff --git a/src/mainboard/google/cyan/variants/banon/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/banon/include/variant/acpi/mainboard.asl
index e2a50d6..ba4290c 100644
--- a/src/mainboard/google/cyan/variants/banon/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/banon/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan trackpad */
 #include <acpi/trackpad_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/banon/include/variant/onboard.h b/src/mainboard/google/cyan/variants/banon/include/variant/onboard.h
index d8d91af..5a73617 100644
--- a/src/mainboard/google/cyan/variants/banon/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/banon/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/banon/romstage.c b/src/mainboard/google/cyan/variants/banon/romstage.c
index 22787aa..d1e1a1c 100644
--- a/src/mainboard/google/cyan/variants/banon/romstage.c
+++ b/src/mainboard/google/cyan/variants/banon/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/banon/spd_util.c b/src/mainboard/google/cyan/variants/banon/spd_util.c
index 1b31e63..093b06a 100644
--- a/src/mainboard/google/cyan/variants/banon/spd_util.c
+++ b/src/mainboard/google/cyan/variants/banon/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/cyan/variants/baseboard/include/baseboard/variants.h
index 3609df5..305facc 100644
--- a/src/mainboard/google/cyan/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/cyan/variants/baseboard/include/baseboard/variants.h
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef BASEBOARD_VARIANTS_H
 #define BASEBOARD_VARIANTS_H
diff --git a/src/mainboard/google/cyan/variants/celes/gpio.c b/src/mainboard/google/cyan/variants/celes/gpio.c
index 5304ed0..3f5f17d 100644
--- a/src/mainboard/google/cyan/variants/celes/gpio.c
+++ b/src/mainboard/google/cyan/variants/celes/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/celes/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/celes/include/variant/acpi/dptf.asl
index 6c53db9..872bc48 100644
--- a/src/mainboard/google/cyan/variants/celes/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/celes/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"NCP15WB_CPU"
diff --git a/src/mainboard/google/cyan/variants/celes/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/celes/include/variant/acpi/mainboard.asl
index 3ee5394..5bed5cb 100644
--- a/src/mainboard/google/cyan/variants/celes/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/celes/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Atmel trackpad */
 #include <acpi/trackpad_atmel.asl>
diff --git a/src/mainboard/google/cyan/variants/celes/include/variant/onboard.h b/src/mainboard/google/cyan/variants/celes/include/variant/onboard.h
index ec45a1e..48d5501 100644
--- a/src/mainboard/google/cyan/variants/celes/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/celes/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/celes/ramstage.c b/src/mainboard/google/cyan/variants/celes/ramstage.c
index bc8c3a9..bb2d107 100644
--- a/src/mainboard/google/cyan/variants/celes/ramstage.c
+++ b/src/mainboard/google/cyan/variants/celes/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 
diff --git a/src/mainboard/google/cyan/variants/celes/spd_util.c b/src/mainboard/google/cyan/variants/celes/spd_util.c
index 58726c1..42f3e71 100644
--- a/src/mainboard/google/cyan/variants/celes/spd_util.c
+++ b/src/mainboard/google/cyan/variants/celes/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <gpio.h>
diff --git a/src/mainboard/google/cyan/variants/cyan/gpio.c b/src/mainboard/google/cyan/variants/cyan/gpio.c
index 1e8590e..c9cd286 100644
--- a/src/mainboard/google/cyan/variants/cyan/gpio.c
+++ b/src/mainboard/google/cyan/variants/cyan/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/dptf.asl
index 83ba030..a4469a4 100644
--- a/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
diff --git a/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/mainboard.asl
index dd30a68..2a0460d 100644
--- a/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/cyan/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan touchscreen */
 #include <acpi/touchscreen_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/cyan/include/variant/onboard.h b/src/mainboard/google/cyan/variants/cyan/include/variant/onboard.h
index 5d5ffbc..6dec60c 100644
--- a/src/mainboard/google/cyan/variants/cyan/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/cyan/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/cyan/spd_util.c b/src/mainboard/google/cyan/variants/cyan/spd_util.c
index fc0eebb..2380218 100644
--- a/src/mainboard/google/cyan/variants/cyan/spd_util.c
+++ b/src/mainboard/google/cyan/variants/cyan/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/edgar/gpio.c b/src/mainboard/google/cyan/variants/edgar/gpio.c
index 487046a..f90ca79 100644
--- a/src/mainboard/google/cyan/variants/edgar/gpio.c
+++ b/src/mainboard/google/cyan/variants/edgar/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/dptf.asl
index f76f282..919369a 100644
--- a/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
diff --git a/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/mainboard.asl
index 19ec65a..ba4290c 100644
--- a/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/edgar/include/variant/acpi/mainboard.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan trackpad */
 #include <acpi/trackpad_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/edgar/include/variant/onboard.h b/src/mainboard/google/cyan/variants/edgar/include/variant/onboard.h
index e676768..c55a50f 100644
--- a/src/mainboard/google/cyan/variants/edgar/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/edgar/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/edgar/romstage.c b/src/mainboard/google/cyan/variants/edgar/romstage.c
index 1cfc978..d5ce6b8 100644
--- a/src/mainboard/google/cyan/variants/edgar/romstage.c
+++ b/src/mainboard/google/cyan/variants/edgar/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/edgar/spd_util.c b/src/mainboard/google/cyan/variants/edgar/spd_util.c
index 5197d1b..698f2d9 100644
--- a/src/mainboard/google/cyan/variants/edgar/spd_util.c
+++ b/src/mainboard/google/cyan/variants/edgar/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/kefka/gpio.c b/src/mainboard/google/cyan/variants/kefka/gpio.c
index 1fe8f60..ccff082 100644
--- a/src/mainboard/google/cyan/variants/kefka/gpio.c
+++ b/src/mainboard/google/cyan/variants/kefka/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/dptf.asl
index 7fc05e0..54f78ff 100644
--- a/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
diff --git a/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/mainboard.asl
index 8cee066..0c5331d 100644
--- a/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/kefka/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan touchscreen */
 #include <acpi/touchscreen_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/kefka/include/variant/onboard.h b/src/mainboard/google/cyan/variants/kefka/include/variant/onboard.h
index a596f38..f16825d 100644
--- a/src/mainboard/google/cyan/variants/kefka/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/kefka/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/kefka/ramstage.c b/src/mainboard/google/cyan/variants/kefka/ramstage.c
index 9dee808..e0ffcc2 100644
--- a/src/mainboard/google/cyan/variants/kefka/ramstage.c
+++ b/src/mainboard/google/cyan/variants/kefka/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 
diff --git a/src/mainboard/google/cyan/variants/kefka/romstage.c b/src/mainboard/google/cyan/variants/kefka/romstage.c
index f2bf5a6..5b10b75 100644
--- a/src/mainboard/google/cyan/variants/kefka/romstage.c
+++ b/src/mainboard/google/cyan/variants/kefka/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/kefka/spd_util.c b/src/mainboard/google/cyan/variants/kefka/spd_util.c
index f7f3874..a2e9636 100644
--- a/src/mainboard/google/cyan/variants/kefka/spd_util.c
+++ b/src/mainboard/google/cyan/variants/kefka/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/reks/gpio.c b/src/mainboard/google/cyan/variants/reks/gpio.c
index 82341e4..6d8cb50 100644
--- a/src/mainboard/google/cyan/variants/reks/gpio.c
+++ b/src/mainboard/google/cyan/variants/reks/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/reks/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/reks/include/variant/acpi/dptf.asl
index e70eae0..a2147de 100644
--- a/src/mainboard/google/cyan/variants/reks/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/reks/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_PMIC"
diff --git a/src/mainboard/google/cyan/variants/reks/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/reks/include/variant/acpi/mainboard.asl
index 4a77209..bc13291 100644
--- a/src/mainboard/google/cyan/variants/reks/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/reks/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Melfas touchscreen */
 #include <acpi/touchscreen_melfas.asl>
diff --git a/src/mainboard/google/cyan/variants/reks/include/variant/onboard.h b/src/mainboard/google/cyan/variants/reks/include/variant/onboard.h
index eead309..26a272d 100644
--- a/src/mainboard/google/cyan/variants/reks/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/reks/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/reks/ramstage.c b/src/mainboard/google/cyan/variants/reks/ramstage.c
index e212131..d49f8f1 100644
--- a/src/mainboard/google/cyan/variants/reks/ramstage.c
+++ b/src/mainboard/google/cyan/variants/reks/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 
diff --git a/src/mainboard/google/cyan/variants/reks/romstage.c b/src/mainboard/google/cyan/variants/reks/romstage.c
index 312709b..59a65b3 100644
--- a/src/mainboard/google/cyan/variants/reks/romstage.c
+++ b/src/mainboard/google/cyan/variants/reks/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/reks/spd_util.c b/src/mainboard/google/cyan/variants/reks/spd_util.c
index 00b47de..6276853 100644
--- a/src/mainboard/google/cyan/variants/reks/spd_util.c
+++ b/src/mainboard/google/cyan/variants/reks/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/relm/gpio.c b/src/mainboard/google/cyan/variants/relm/gpio.c
index d452622..61ede38 100644
--- a/src/mainboard/google/cyan/variants/relm/gpio.c
+++ b/src/mainboard/google/cyan/variants/relm/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/relm/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/relm/include/variant/acpi/dptf.asl
index e70eae0..a2147de 100644
--- a/src/mainboard/google/cyan/variants/relm/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/relm/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_PMIC"
diff --git a/src/mainboard/google/cyan/variants/relm/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/relm/include/variant/acpi/mainboard.asl
index 4a77209..bc13291 100644
--- a/src/mainboard/google/cyan/variants/relm/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/relm/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Melfas touchscreen */
 #include <acpi/touchscreen_melfas.asl>
diff --git a/src/mainboard/google/cyan/variants/relm/include/variant/onboard.h b/src/mainboard/google/cyan/variants/relm/include/variant/onboard.h
index 6d4d682..5fe4213 100644
--- a/src/mainboard/google/cyan/variants/relm/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/relm/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/relm/ramstage.c b/src/mainboard/google/cyan/variants/relm/ramstage.c
index 0030d9f..54e11d2 100644
--- a/src/mainboard/google/cyan/variants/relm/ramstage.c
+++ b/src/mainboard/google/cyan/variants/relm/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 
diff --git a/src/mainboard/google/cyan/variants/relm/romstage.c b/src/mainboard/google/cyan/variants/relm/romstage.c
index 312709b..59a65b3 100644
--- a/src/mainboard/google/cyan/variants/relm/romstage.c
+++ b/src/mainboard/google/cyan/variants/relm/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/relm/spd_util.c b/src/mainboard/google/cyan/variants/relm/spd_util.c
index 5315c5b..b9fd41e 100644
--- a/src/mainboard/google/cyan/variants/relm/spd_util.c
+++ b/src/mainboard/google/cyan/variants/relm/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/setzer/gpio.c b/src/mainboard/google/cyan/variants/setzer/gpio.c
index 70ffeba..c2acb2b 100644
--- a/src/mainboard/google/cyan/variants/setzer/gpio.c
+++ b/src/mainboard/google/cyan/variants/setzer/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/dptf.asl
index 324d8bc..8807296 100644
--- a/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
diff --git a/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/mainboard.asl
index c976fb9..b7a67d3 100644
--- a/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/setzer/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Synaptics touchscreen */
 #include <acpi/touchscreen_synaptics.asl>
diff --git a/src/mainboard/google/cyan/variants/setzer/include/variant/onboard.h b/src/mainboard/google/cyan/variants/setzer/include/variant/onboard.h
index 3f9f4a9..5a00f13 100644
--- a/src/mainboard/google/cyan/variants/setzer/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/setzer/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/setzer/ramstage.c b/src/mainboard/google/cyan/variants/setzer/ramstage.c
index 84d2f43..b73bb97 100644
--- a/src/mainboard/google/cyan/variants/setzer/ramstage.c
+++ b/src/mainboard/google/cyan/variants/setzer/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 
diff --git a/src/mainboard/google/cyan/variants/setzer/romstage.c b/src/mainboard/google/cyan/variants/setzer/romstage.c
index b36f09c..5f400c3 100644
--- a/src/mainboard/google/cyan/variants/setzer/romstage.c
+++ b/src/mainboard/google/cyan/variants/setzer/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/setzer/spd_util.c b/src/mainboard/google/cyan/variants/setzer/spd_util.c
index 43b5737..d9922d8 100644
--- a/src/mainboard/google/cyan/variants/setzer/spd_util.c
+++ b/src/mainboard/google/cyan/variants/setzer/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <gpio.h>
diff --git a/src/mainboard/google/cyan/variants/terra/gpio.c b/src/mainboard/google/cyan/variants/terra/gpio.c
index 1f484fe..2e16bb8 100644
--- a/src/mainboard/google/cyan/variants/terra/gpio.c
+++ b/src/mainboard/google/cyan/variants/terra/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/charger.asl b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/charger.asl
index 8c8495f..9a5cbb9 100644
--- a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/charger.asl
+++ b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/charger.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (TCHG)
 {
diff --git a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/cpu.asl b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/cpu.asl
index 49991a8..85632bd 100644
--- a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/cpu.asl
+++ b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/cpu.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef DPTF_CPU_PASSIVE
 #define DPTF_CPU_PASSIVE	80
diff --git a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/dptf.asl
index 4ace719..d9dee4a 100644
--- a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_CPU"
diff --git a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/mainboard.asl
index ad8f4de..cf6514d 100644
--- a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan trackpad */
 #include <acpi/trackpad_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/thermal.asl b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/thermal.asl
index 09f4b6d..e2c8ddc 100644
--- a/src/mainboard/google/cyan/variants/terra/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/cyan/variants/terra/include/variant/acpi/thermal.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Thermal Threshold Event Handler */
 #define HAVE_THERM_EVENT_HANDLER
diff --git a/src/mainboard/google/cyan/variants/terra/include/variant/onboard.h b/src/mainboard/google/cyan/variants/terra/include/variant/onboard.h
index 2a8ff9f..7c53e0e 100644
--- a/src/mainboard/google/cyan/variants/terra/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/terra/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/terra/ramstage.c b/src/mainboard/google/cyan/variants/terra/ramstage.c
index edbe7e0..f741422 100644
--- a/src/mainboard/google/cyan/variants/terra/ramstage.c
+++ b/src/mainboard/google/cyan/variants/terra/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 #include <boardid.h>
diff --git a/src/mainboard/google/cyan/variants/terra/romstage.c b/src/mainboard/google/cyan/variants/terra/romstage.c
index b1850c5..8640e8c 100644
--- a/src/mainboard/google/cyan/variants/terra/romstage.c
+++ b/src/mainboard/google/cyan/variants/terra/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/romstage.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/cyan/variants/terra/spd_util.c b/src/mainboard/google/cyan/variants/terra/spd_util.c
index 1483bab..05fbb22 100644
--- a/src/mainboard/google/cyan/variants/terra/spd_util.c
+++ b/src/mainboard/google/cyan/variants/terra/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/ultima/gpio.c b/src/mainboard/google/cyan/variants/ultima/gpio.c
index 78d8a36..fc8776a 100644
--- a/src/mainboard/google/cyan/variants/ultima/gpio.c
+++ b/src/mainboard/google/cyan/variants/ultima/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/dptf.asl
index 1499545..7de3550 100644
--- a/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Charger"
diff --git a/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/mainboard.asl
index 8cee066..0c5331d 100644
--- a/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/ultima/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan touchscreen */
 #include <acpi/touchscreen_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/ultima/include/variant/onboard.h b/src/mainboard/google/cyan/variants/ultima/include/variant/onboard.h
index 73121a1..e9e7376 100644
--- a/src/mainboard/google/cyan/variants/ultima/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/ultima/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/ultima/ramstage.c b/src/mainboard/google/cyan/variants/ultima/ramstage.c
index 8ffee5a..20159f9 100644
--- a/src/mainboard/google/cyan/variants/ultima/ramstage.c
+++ b/src/mainboard/google/cyan/variants/ultima/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 
diff --git a/src/mainboard/google/cyan/variants/ultima/spd_util.c b/src/mainboard/google/cyan/variants/ultima/spd_util.c
index ce3cf7f..f32b23b 100644
--- a/src/mainboard/google/cyan/variants/ultima/spd_util.c
+++ b/src/mainboard/google/cyan/variants/ultima/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/variants/wizpig/gpio.c b/src/mainboard/google/cyan/variants/wizpig/gpio.c
index d96c848..603e91d 100644
--- a/src/mainboard/google/cyan/variants/wizpig/gpio.c
+++ b/src/mainboard/google/cyan/variants/wizpig/gpio.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <mainboard/google/cyan/irqroute.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/dptf.asl b/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/dptf.asl
index 775971a..fcf4cf7 100644
--- a/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/dptf.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #define DPTF_TSR0_SENSOR_ID	0
 #define DPTF_TSR0_SENSOR_NAME	"TMP432_Internal"
diff --git a/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/mainboard.asl b/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/mainboard.asl
index 8cee066..0c5331d 100644
--- a/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/cyan/variants/wizpig/include/variant/acpi/mainboard.asl
@@ -1,17 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /* Elan touchscreen */
 #include <acpi/touchscreen_elan.asl>
diff --git a/src/mainboard/google/cyan/variants/wizpig/include/variant/onboard.h b/src/mainboard/google/cyan/variants/wizpig/include/variant/onboard.h
index 4be300d..b0161a8 100644
--- a/src/mainboard/google/cyan/variants/wizpig/include/variant/onboard.h
+++ b/src/mainboard/google/cyan/variants/wizpig/include/variant/onboard.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef ONBOARD_H
 #define ONBOARD_H
diff --git a/src/mainboard/google/cyan/variants/wizpig/spd_util.c b/src/mainboard/google/cyan/variants/wizpig/spd_util.c
index f055fee..04528a8 100644
--- a/src/mainboard/google/cyan/variants/wizpig/spd_util.c
+++ b/src/mainboard/google/cyan/variants/wizpig/spd_util.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <console/console.h>
 #include <mainboard/google/cyan/spd/spd_util.h>
diff --git a/src/mainboard/google/cyan/w25q64.c b/src/mainboard/google/cyan/w25q64.c
index 9780e0a..c50a38c 100644
--- a/src/mainboard/google/cyan/w25q64.c
+++ b/src/mainboard/google/cyan/w25q64.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/spi.h>
 #include <string.h>

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