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>

99 files changed, 198 insertions, 1305 deletions

diff --git a/src/mainboard/google/cyan/acpi/codec_maxim.asl b/src/mainboard/google/cyan/acpi/codec_maxim.asl
index a33f80a730..2a790b46bd 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 34bf109b89..c5ca297996 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 97dd96f04d..3271754a9c 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 da185cbc80..08ab88dd14 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 0fc0d94a15..2c02fbebfd 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 ff98b9053a..251ef26b30 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 2b6f148631..cac588a1b2 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 9391be7fed..3a059143ca 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 7585cb75f8..4b1695219e 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 a1335d9952..a6b82f287d 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 9163cff52a..04e51ded39 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 00b3c08165..20d218df2e 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 2968f8d676..da41162cf0 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 8c456d3422..5d82115be0 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 f9f494093e..84544fcc55 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 8ebd096da5..55c3e1ff3c 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 450d863ba3..b93c53fa33 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 9e5af024e4..8d746676e9 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 f0855adbc2..df43ee9c69 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 85d8a5f93b..cacabfee84 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 2ef44d49d8..a87ca8bbf4 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 7116b71ffc..1501c3b668 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 2871915106..8b1032de63 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 cb65b091db..7ceb27db49 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 cd65be50a4..5e13ddf724 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 c0a1cb25b6..fa1ef880f0 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 9be7ba5dd3..6a7a09450c 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 e2a50d6161..ba4290c43e 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 d8d91af1f8..5a736170ea 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 22787aae27..d1e1a1cf3d 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 1b31e63d8a..093b06a4f1 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 3609df5874..305facc481 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 5304ed0615..3f5f17de7d 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 6c53db92ad..872bc485c3 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 3ee5394431..5bed5cb097 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 ec45a1eb9a..48d5501332 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 bc8c3a97c7..bb2d1074d8 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 58726c182a..42f3e71e48 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 1e8590ed56..c9cd286719 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 83ba03035a..a4469a41ef 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 dd30a68f2f..2a0460de92 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 5d5ffbc2f1..6dec60ca0b 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 fc0eebb87b..238021893f 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 487046a3f2..f90ca79be2 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 f76f282f68..919369af5e 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 19ec65ae63..ba4290c43e 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 e676768c23..c55a50f998 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 1cfc978680..d5ce6b87bf 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 5197d1b33c..698f2d9dd0 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 1fe8f604a0..ccff0821e6 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 7fc05e0d33..54f78ff321 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 8cee066038..0c5331d62b 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 a596f3898e..f16825de38 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 9dee808d6a..e0ffcc227f 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 f2bf5a65c6..5b10b755f5 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 f7f387409b..a2e9636fca 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 82341e4c5d..6d8cb509ac 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 e70eae0294..a2147dec9a 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 4a77209ed3..bc132913db 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 eead309cf3..26a272d465 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 e212131773..d49f8f141c 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 312709b7eb..59a65b3077 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 00b47deb1b..6276853fd2 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 d452622e9d..61ede38d8a 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 e70eae0294..a2147dec9a 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 4a77209ed3..bc132913db 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 6d4d682e37..5fe4213207 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 0030d9f48c..54e11d27a9 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 312709b7eb..59a65b3077 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 5315c5bae3..b9fd41e5f3 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 70ffeba09d..c2acb2b3f7 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 324d8bc351..8807296f55 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 c976fb96d0..b7a67d3bcd 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 3f9f4a9b26..5a00f134cf 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 84d2f43822..b73bb97aac 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 b36f09c0c9..5f400c3a4d 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 43b57376c3..d9922d8cd1 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 1f484fe51d..2e16bb88c8 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 8c8495f540..9a5cbb94a9 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 49991a8435..85632bd6e4 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 4ace7195d6..d9dee4ae5c 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 ad8f4de332..cf6514d7eb 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 09f4b6d7f8..e2c8ddcfe0 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 2a8ff9f294..7c53e0e39b 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 edbe7e06ad..f7414221a7 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 b1850c5491..8640e8c408 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 1483bab84a..05fbb22421 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 78d8a36d97..fc8776a334 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 1499545e13..7de355063c 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 8cee066038..0c5331d62b 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 73121a16c8..e9e73768fa 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 8ffee5ae75..20159f9972 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 ce3cf7fd87..f32b23b8a2 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 d96c848f6d..603e91d965 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 775971ac31..fcf4cf71b3 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 8cee066038..0c5331d62b 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 4be300d83e..b0161a8fed 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 f055fee423..04528a8745 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 9780e0ac1c..c50a38c04d 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>