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

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

Change-Id: Idfc7a5713e231c4756b5faca8984c6598fe1e65a
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40190
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

84 files changed, 168 insertions, 1092 deletions

diff --git a/src/mainboard/google/poppy/bootblock.c b/src/mainboard/google/poppy/bootblock.c
index fe2262c1d5..00ac265162 100644
--- a/src/mainboard/google/poppy/bootblock.c
+++ b/src/mainboard/google/poppy/bootblock.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 <baseboard/variants.h>
 #include <bootblock_common.h>
diff --git a/src/mainboard/google/poppy/chromeos.c b/src/mainboard/google/poppy/chromeos.c
index 329d53e701..a0bd9b20f3 100644
--- a/src/mainboard/google/poppy/chromeos.c
+++ b/src/mainboard/google/poppy/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 <arch/acpi.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/dsdt.asl b/src/mainboard/google/poppy/dsdt.asl
index 7a21384cfe..9684c043f0 100644
--- a/src/mainboard/google/poppy/dsdt.asl
+++ b/src/mainboard/google/poppy/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 <variant/ec.h>
 #include <variant/gpio.h>
diff --git a/src/mainboard/google/poppy/ec.c b/src/mainboard/google/poppy/ec.c
index 4fbea2e845..77f063d875 100644
--- a/src/mainboard/google/poppy/ec.c
+++ b/src/mainboard/google/poppy/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 <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/mainboard.c b/src/mainboard/google/poppy/mainboard.c
index a375d1f33d..dc50399b88 100644
--- a/src/mainboard/google/poppy/mainboard.c
+++ b/src/mainboard/google/poppy/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 <arch/acpi.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/ramstage.c b/src/mainboard/google/poppy/ramstage.c
index bdcaa321f3..6a2e551b23 100644
--- a/src/mainboard/google/poppy/ramstage.c
+++ b/src/mainboard/google/poppy/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 <baseboard/variants.h>
 #include <soc/ramstage.h>
diff --git a/src/mainboard/google/poppy/romstage.c b/src/mainboard/google/poppy/romstage.c
index 8c5d3085a3..85260c13de 100644
--- a/src/mainboard/google/poppy/romstage.c
+++ b/src/mainboard/google/poppy/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 <assert.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/smihandler.c b/src/mainboard/google/poppy/smihandler.c
index 21ae5f8216..33a4faff69 100644
--- a/src/mainboard/google/poppy/smihandler.c
+++ b/src/mainboard/google/poppy/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 <cpu/x86/smm.h>
 #include <ec/google/chromeec/ec.h>
diff --git a/src/mainboard/google/poppy/variants/atlas/gpio.c b/src/mainboard/google/poppy/variants/atlas/gpio.c
index b8ad480cce..3781513900 100644
--- a/src/mainboard/google/poppy/variants/atlas/gpio.c
+++ b/src/mainboard/google/poppy/variants/atlas/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/cam0.asl b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/cam0.asl
index 0f433eaba9..3b5056d926 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/cam0.asl
+++ b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/cam0.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.I2C3)
 {
diff --git a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/camera.asl b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/camera.asl
index 5f0e71214d..9bc56f0939 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/camera.asl
+++ b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/camera.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 "ipu_mainboard.asl"
 #include "ipu_endpoints.asl"
diff --git a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/dptf.asl
index 5f08a1d2b4..dec5ecef1d 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/atlas/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_CPU_PASSIVE		80
 #define DPTF_CPU_CRITICAL		105
diff --git a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_endpoints.asl b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_endpoints.asl
index 89396f087c..ce1b7c0639 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_endpoints.asl
+++ b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_endpoints.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.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_mainboard.asl b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_mainboard.asl
index 03cba8cac2..08d55ef5a3 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_mainboard.asl
+++ b/src/mainboard/google/poppy/variants/atlas/include/variant/acpi/ipu_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. */
 
 Scope (\_SB.PCI0.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/atlas/include/variant/ec.h b/src/mainboard/google/poppy/variants/atlas/include/variant/ec.h
index cb2ca72d81..28740ba163 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/atlas/include/variant/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/poppy/variants/atlas/include/variant/gpio.h b/src/mainboard/google/poppy/variants/atlas/include/variant/gpio.h
index d439f89765..a94b5d94b8 100644
--- a/src/mainboard/google/poppy/variants/atlas/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/atlas/include/variant/gpio.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_GPIO_H__
 #define __MAINBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/atlas/mainboard.c b/src/mainboard/google/poppy/variants/atlas/mainboard.c
index 8b475d4928..188962c8ec 100644
--- a/src/mainboard/google/poppy/variants/atlas/mainboard.c
+++ b/src/mainboard/google/poppy/variants/atlas/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 <baseboard/variants.h>
 #include <chip.h>
diff --git a/src/mainboard/google/poppy/variants/atlas/memory.c b/src/mainboard/google/poppy/variants/atlas/memory.c
index 7db8339a8b..3dd2c0c546 100644
--- a/src/mainboard/google/poppy/variants/atlas/memory.c
+++ b/src/mainboard/google/poppy/variants/atlas/memory.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 <assert.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/atlas/nhlt.c b/src/mainboard/google/poppy/variants/atlas/nhlt.c
index 0d909695b5..03df194e32 100644
--- a/src/mainboard/google/poppy/variants/atlas/nhlt.c
+++ b/src/mainboard/google/poppy/variants/atlas/nhlt.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 <baseboard/variants.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/poppy/variants/baseboard/gpio.c b/src/mainboard/google/poppy/variants/baseboard/gpio.c
index 7c2d282513..edc555a59a 100644
--- a/src/mainboard/google/poppy/variants/baseboard/gpio.c
+++ b/src/mainboard/google/poppy/variants/baseboard/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam0.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam0.asl
index 6bc5a68ce3..76bbfa3998 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam0.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam0.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.I2C2)
 {
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam1.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam1.asl
index 154a62b6a3..e46d0865bf 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam1.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/cam1.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.I2C4)
 {
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera.asl
index fafa29f30a..1365ee9f58 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera.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 "ipu_mainboard.asl"
 #include "ipu_endpoints.asl"
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera_pmic.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera_pmic.asl
index 02c18e119a..377f5615f0 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera_pmic.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/camera_pmic.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.I2C2)
 {
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/dptf.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/dptf.asl
index e2c1c01bbc..c63c0ccbe9 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/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_CPU_PASSIVE	94
 #define DPTF_CPU_CRITICAL	99
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_endpoints.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_endpoints.asl
index d96416e279..9d2b5a8f3d 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_endpoints.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_endpoints.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.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_mainboard.asl b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_mainboard.asl
index a8a7e4ad13..83538daba8 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_mainboard.asl
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/acpi/ipu_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. */
 
 Scope (\_SB.PCI0.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/ec.h
index f89808c6a3..11ac7a5139 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/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 __BASEBOARD_EC_H__
 #define __BASEBOARD_EC_H__
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/gpio.h b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/gpio.h
index 4e1506069f..a5239517e9 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/gpio.h
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/gpio.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 __BASEBOARD_GPIO_H__
 #define __BASEBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h
index 63cc123b05..23c0c1628c 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.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 __BASEBOARD_VARIANTS_H__
 #define __BASEBOARD_VARIANTS_H__
diff --git a/src/mainboard/google/poppy/variants/baseboard/memory.c b/src/mainboard/google/poppy/variants/baseboard/memory.c
index ac8e90815c..3f19faca8f 100644
--- a/src/mainboard/google/poppy/variants/baseboard/memory.c
+++ b/src/mainboard/google/poppy/variants/baseboard/memory.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 <baseboard/variants.h>
 #include <gpio.h>
diff --git a/src/mainboard/google/poppy/variants/baseboard/nhlt.c b/src/mainboard/google/poppy/variants/baseboard/nhlt.c
index 3d8d29fd70..fd8dd77289 100644
--- a/src/mainboard/google/poppy/variants/baseboard/nhlt.c
+++ b/src/mainboard/google/poppy/variants/baseboard/nhlt.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 <baseboard/variants.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/poppy/variants/nami/gpio.c b/src/mainboard/google/poppy/variants/nami/gpio.c
index 93b8e15375..980e9a55c0 100644
--- a/src/mainboard/google/poppy/variants/nami/gpio.c
+++ b/src/mainboard/google/poppy/variants/nami/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/nami/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/nami/include/variant/acpi/dptf.asl
index ee038fb9c7..ba089dd5b3 100644
--- a/src/mainboard/google/poppy/variants/nami/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/nami/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_CPU_PASSIVE	98
 #define DPTF_CPU_CRITICAL	125
diff --git a/src/mainboard/google/poppy/variants/nami/include/variant/ec.h b/src/mainboard/google/poppy/variants/nami/include/variant/ec.h
index d7fcf5548e..a4816a2723 100644
--- a/src/mainboard/google/poppy/variants/nami/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/nami/include/variant/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/poppy/variants/nami/include/variant/gpio.h b/src/mainboard/google/poppy/variants/nami/include/variant/gpio.h
index ab76d7b498..b535cca69a 100644
--- a/src/mainboard/google/poppy/variants/nami/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/nami/include/variant/gpio.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_GPIO_H__
 #define __MAINBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/nami/include/variant/sku.h b/src/mainboard/google/poppy/variants/nami/include/variant/sku.h
index 9b146c76df..79174471c9 100644
--- a/src/mainboard/google/poppy/variants/nami/include/variant/sku.h
+++ b/src/mainboard/google/poppy/variants/nami/include/variant/sku.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_SKU_H__
 #define __MAINBOARD_SKU_H__
diff --git a/src/mainboard/google/poppy/variants/nami/mainboard.c b/src/mainboard/google/poppy/variants/nami/mainboard.c
index 9a08597d04..3df1f71a08 100644
--- a/src/mainboard/google/poppy/variants/nami/mainboard.c
+++ b/src/mainboard/google/poppy/variants/nami/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 <arch/cpu.h>
 #include <assert.h>
diff --git a/src/mainboard/google/poppy/variants/nami/memory.c b/src/mainboard/google/poppy/variants/nami/memory.c
index 5ab78eeb98..1b91ee8f8e 100644
--- a/src/mainboard/google/poppy/variants/nami/memory.c
+++ b/src/mainboard/google/poppy/variants/nami/memory.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 <baseboard/variants.h>
 #include <gpio.h>
diff --git a/src/mainboard/google/poppy/variants/nami/nhlt.c b/src/mainboard/google/poppy/variants/nami/nhlt.c
index 50bd7eaf21..6a4212d3d3 100644
--- a/src/mainboard/google/poppy/variants/nami/nhlt.c
+++ b/src/mainboard/google/poppy/variants/nami/nhlt.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 <baseboard/variants.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/poppy/variants/nami/smihandler.c b/src/mainboard/google/poppy/variants/nami/smihandler.c
index 6d9c227d49..0e4c085d9b 100644
--- a/src/mainboard/google/poppy/variants/nami/smihandler.c
+++ b/src/mainboard/google/poppy/variants/nami/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 <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/nautilus/gpio.c b/src/mainboard/google/poppy/variants/nautilus/gpio.c
index 5f83a5f7b6..2652cab0e2 100644
--- a/src/mainboard/google/poppy/variants/nautilus/gpio.c
+++ b/src/mainboard/google/poppy/variants/nautilus/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/cam0.asl b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/cam0.asl
index 456bc10d2b..b12dfe3d1c 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/cam0.asl
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/cam0.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.I2C2)
 {
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/camera.asl b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/camera.asl
index a265c5d4ae..64ab8a2185 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/camera.asl
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/camera.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 "ipu_mainboard.asl"
 #include "ipu_endpoints.asl"
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/dptf.asl
index 2d09608ed4..eb0b33b4b8 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/nautilus/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_CPU_PASSIVE		80
 #define DPTF_CPU_CRITICAL		105
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_endpoints.asl b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_endpoints.asl
index e5eed8eb53..053d8e891d 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_endpoints.asl
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_endpoints.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.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_mainboard.asl b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_mainboard.asl
index 5626b6c223..ea311ccb22 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_mainboard.asl
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/acpi/ipu_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. */
 
 Scope (\_SB.PCI0.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/ec.h b/src/mainboard/google/poppy/variants/nautilus/include/variant/ec.h
index d6eb4f1649..dce16f180d 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/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/poppy/variants/nautilus/include/variant/gpio.h b/src/mainboard/google/poppy/variants/nautilus/include/variant/gpio.h
index 97774271b3..0f0ff50584 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/gpio.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_GPIO_H__
 #define __MAINBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/nautilus/include/variant/sku.h b/src/mainboard/google/poppy/variants/nautilus/include/variant/sku.h
index 1d019c3f82..9e1661ecb1 100644
--- a/src/mainboard/google/poppy/variants/nautilus/include/variant/sku.h
+++ b/src/mainboard/google/poppy/variants/nautilus/include/variant/sku.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_SKU_H__
 #define __MAINBOARD_SKU_H__
diff --git a/src/mainboard/google/poppy/variants/nautilus/mainboard.c b/src/mainboard/google/poppy/variants/nautilus/mainboard.c
index 223ad49fb1..a3c852400e 100644
--- a/src/mainboard/google/poppy/variants/nautilus/mainboard.c
+++ b/src/mainboard/google/poppy/variants/nautilus/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 <baseboard/variants.h>
 #include <chip.h>
diff --git a/src/mainboard/google/poppy/variants/nautilus/memory.c b/src/mainboard/google/poppy/variants/nautilus/memory.c
index dd8608f2d5..92ce85aed8 100644
--- a/src/mainboard/google/poppy/variants/nautilus/memory.c
+++ b/src/mainboard/google/poppy/variants/nautilus/memory.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 <baseboard/variants.h>
 #include <variant/sku.h>
diff --git a/src/mainboard/google/poppy/variants/nautilus/nhlt.c b/src/mainboard/google/poppy/variants/nautilus/nhlt.c
index 08c057a8c1..bbdf9b155d 100644
--- a/src/mainboard/google/poppy/variants/nautilus/nhlt.c
+++ b/src/mainboard/google/poppy/variants/nautilus/nhlt.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 <baseboard/variants.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/poppy/variants/nautilus/sku.c b/src/mainboard/google/poppy/variants/nautilus/sku.c
index 2040f144ca..bbd7a4d18b 100644
--- a/src/mainboard/google/poppy/variants/nautilus/sku.c
+++ b/src/mainboard/google/poppy/variants/nautilus/sku.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 <baseboard/variants.h>
 #include <gpio.h>
diff --git a/src/mainboard/google/poppy/variants/nautilus/smihandler.c b/src/mainboard/google/poppy/variants/nautilus/smihandler.c
index 3b6c45aa3c..a65172374b 100644
--- a/src/mainboard/google/poppy/variants/nautilus/smihandler.c
+++ b/src/mainboard/google/poppy/variants/nautilus/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 <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/nocturne/ec.c b/src/mainboard/google/poppy/variants/nocturne/ec.c
index 90f1187a24..7619c7f602 100644
--- a/src/mainboard/google/poppy/variants/nocturne/ec.c
+++ b/src/mainboard/google/poppy/variants/nocturne/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 <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/nocturne/gpio.c b/src/mainboard/google/poppy/variants/nocturne/gpio.c
index 0c8947b15a..ef093838d2 100644
--- a/src/mainboard/google/poppy/variants/nocturne/gpio.c
+++ b/src/mainboard/google/poppy/variants/nocturne/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam0.asl b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam0.asl
index bbf534a2e4..0a66f9abb2 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam0.asl
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam0.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.I2C3)
 {
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam1.asl b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam1.asl
index 4d87b2910e..bd11758d78 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam1.asl
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/cam1.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.I2C5)
 {
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/camera.asl b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/camera.asl
index 6c74ef1498..fae8e5d1dd 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/camera.asl
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/camera.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 "ipu_mainboard.asl"
 #include "ipu_endpoints.asl"
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/dptf.asl
index 1ca8b55d2a..7d2f3424d9 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/nocturne/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_CPU_PASSIVE		80
 #define DPTF_CPU_CRITICAL		100
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_endpoints.asl b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_endpoints.asl
index 0e729a5a56..ecb4738667 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_endpoints.asl
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_endpoints.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.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_mainboard.asl b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_mainboard.asl
index f489990a78..e8eaf320c4 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_mainboard.asl
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/acpi/ipu_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. */
 
 Scope (\_SB.PCI0.CIO2)
 {
diff --git a/src/mainboard/google/poppy/variants/nocturne/include/variant/ec.h b/src/mainboard/google/poppy/variants/nocturne/include/variant/ec.h
index bb98e65e97..8e27990edc 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/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/poppy/variants/nocturne/include/variant/gpio.h b/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.h
index 7fbd04f3d1..03fd88e117 100644
--- a/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/nocturne/include/variant/gpio.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 __BASEBOARD_GPIO_H__
 #define __BASEBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/nocturne/mainboard.c b/src/mainboard/google/poppy/variants/nocturne/mainboard.c
index e9cec1e9b1..5df26cd49a 100644
--- a/src/mainboard/google/poppy/variants/nocturne/mainboard.c
+++ b/src/mainboard/google/poppy/variants/nocturne/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 <baseboard/variants.h>
 #include <chip.h>
diff --git a/src/mainboard/google/poppy/variants/nocturne/memory.c b/src/mainboard/google/poppy/variants/nocturne/memory.c
index 59490bad26..7ce273fd95 100644
--- a/src/mainboard/google/poppy/variants/nocturne/memory.c
+++ b/src/mainboard/google/poppy/variants/nocturne/memory.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 <baseboard/variants.h>
 
diff --git a/src/mainboard/google/poppy/variants/nocturne/nhlt.c b/src/mainboard/google/poppy/variants/nocturne/nhlt.c
index 0b0efdc368..93045fa2c6 100644
--- a/src/mainboard/google/poppy/variants/nocturne/nhlt.c
+++ b/src/mainboard/google/poppy/variants/nocturne/nhlt.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 <baseboard/variants.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/camera.asl b/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/camera.asl
index 14fa2113db..304c0fe611 100644
--- a/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/camera.asl
+++ b/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/camera.asl
@@ -1,15 +1,4 @@
-/*
- * 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 <baseboard/acpi/camera.asl>
diff --git a/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/dptf.asl
index 7d9006a068..231ff1bb72 100644
--- a/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/poppy/include/variant/acpi/dptf.asl
@@ -1,15 +1,4 @@
-/*
- * 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 <baseboard/acpi/dptf.asl>
diff --git a/src/mainboard/google/poppy/variants/poppy/include/variant/ec.h b/src/mainboard/google/poppy/variants/poppy/include/variant/ec.h
index fbae57d7fc..734518f138 100644
--- a/src/mainboard/google/poppy/variants/poppy/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/poppy/include/variant/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/poppy/variants/poppy/include/variant/gpio.h b/src/mainboard/google/poppy/variants/poppy/include/variant/gpio.h
index bcb87cb1d7..785fcaceb1 100644
--- a/src/mainboard/google/poppy/variants/poppy/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/poppy/include/variant/gpio.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_GPIO_H__
 #define __MAINBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/rammus/gpio.c b/src/mainboard/google/poppy/variants/rammus/gpio.c
index 0cae82f404..b276faf5b9 100644
--- a/src/mainboard/google/poppy/variants/rammus/gpio.c
+++ b/src/mainboard/google/poppy/variants/rammus/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/rammus/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/rammus/include/variant/acpi/dptf.asl
index 7d9006a068..231ff1bb72 100644
--- a/src/mainboard/google/poppy/variants/rammus/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/rammus/include/variant/acpi/dptf.asl
@@ -1,15 +1,4 @@
-/*
- * 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 <baseboard/acpi/dptf.asl>
diff --git a/src/mainboard/google/poppy/variants/rammus/include/variant/ec.h b/src/mainboard/google/poppy/variants/rammus/include/variant/ec.h
index 2711481903..daf6d3b8a7 100644
--- a/src/mainboard/google/poppy/variants/rammus/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/rammus/include/variant/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/poppy/variants/rammus/include/variant/gpio.h b/src/mainboard/google/poppy/variants/rammus/include/variant/gpio.h
index bcb87cb1d7..785fcaceb1 100644
--- a/src/mainboard/google/poppy/variants/rammus/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/rammus/include/variant/gpio.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_GPIO_H__
 #define __MAINBOARD_GPIO_H__
diff --git a/src/mainboard/google/poppy/variants/rammus/mainboard.c b/src/mainboard/google/poppy/variants/rammus/mainboard.c
index c3f5b2af83..07964a3f4e 100644
--- a/src/mainboard/google/poppy/variants/rammus/mainboard.c
+++ b/src/mainboard/google/poppy/variants/rammus/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 <baseboard/variants.h>
 #include <ec/google/chromeec/ec.h>
diff --git a/src/mainboard/google/poppy/variants/rammus/memory.c b/src/mainboard/google/poppy/variants/rammus/memory.c
index 1a4fe05f20..eec7c1a162 100644
--- a/src/mainboard/google/poppy/variants/rammus/memory.c
+++ b/src/mainboard/google/poppy/variants/rammus/memory.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 <baseboard/variants.h>
 
diff --git a/src/mainboard/google/poppy/variants/rammus/nhlt.c b/src/mainboard/google/poppy/variants/rammus/nhlt.c
index c22f672eca..513df50dcd 100644
--- a/src/mainboard/google/poppy/variants/rammus/nhlt.c
+++ b/src/mainboard/google/poppy/variants/rammus/nhlt.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 <baseboard/variants.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/poppy/variants/soraka/gpio.c b/src/mainboard/google/poppy/variants/soraka/gpio.c
index c59c572e03..be0c3e9be8 100644
--- a/src/mainboard/google/poppy/variants/soraka/gpio.c
+++ b/src/mainboard/google/poppy/variants/soraka/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 <baseboard/gpio.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/camera.asl b/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/camera.asl
index 14fa2113db..304c0fe611 100644
--- a/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/camera.asl
+++ b/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/camera.asl
@@ -1,15 +1,4 @@
-/*
- * 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 <baseboard/acpi/camera.asl>
diff --git a/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/dptf.asl b/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/dptf.asl
index c44e6515b8..1c8abe710d 100644
--- a/src/mainboard/google/poppy/variants/soraka/include/variant/acpi/dptf.asl
+++ b/src/mainboard/google/poppy/variants/soraka/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_CPU_PASSIVE		82
 #define DPTF_CPU_CRITICAL		100
diff --git a/src/mainboard/google/poppy/variants/soraka/include/variant/ec.h b/src/mainboard/google/poppy/variants/soraka/include/variant/ec.h
index 1bee0bb741..dc0e41c701 100644
--- a/src/mainboard/google/poppy/variants/soraka/include/variant/ec.h
+++ b/src/mainboard/google/poppy/variants/soraka/include/variant/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/poppy/variants/soraka/include/variant/gpio.h b/src/mainboard/google/poppy/variants/soraka/include/variant/gpio.h
index bcb87cb1d7..785fcaceb1 100644
--- a/src/mainboard/google/poppy/variants/soraka/include/variant/gpio.h
+++ b/src/mainboard/google/poppy/variants/soraka/include/variant/gpio.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_GPIO_H__
 #define __MAINBOARD_GPIO_H__