Angel Pons has uploaded this change for review.

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

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

Change-Id: I78f386eb47fc9b91992884e309dbbf33fb3d4e92
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
---
M src/mainboard/google/kahlee/BiosCallOuts.c
M src/mainboard/google/kahlee/OemCustomize.c
M src/mainboard/google/kahlee/bootblock/bootblock.c
M src/mainboard/google/kahlee/chromeos.c
M src/mainboard/google/kahlee/dsdt.asl
M src/mainboard/google/kahlee/ec.c
M src/mainboard/google/kahlee/irq_tables.c
M src/mainboard/google/kahlee/mainboard.c
M src/mainboard/google/kahlee/mptable.c
M src/mainboard/google/kahlee/romstage.c
M src/mainboard/google/kahlee/smihandler.c
M src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/routing.asl
M src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/aleena/include/variant/ec.h
M src/mainboard/google/kahlee/variants/aleena/include/variant/gpio.h
M src/mainboard/google/kahlee/variants/aleena/include/variant/thermal.h
M src/mainboard/google/kahlee/variants/baseboard/OemCustomize.c
M src/mainboard/google/kahlee/variants/baseboard/gpio.c
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/audio.asl
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/routing.asl
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/gpio.h
M src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
M src/mainboard/google/kahlee/variants/baseboard/mainboard.c
M src/mainboard/google/kahlee/variants/baseboard/memory.c
M src/mainboard/google/kahlee/variants/baseboard/romstage.c
M src/mainboard/google/kahlee/variants/baseboard/tpm_tis.c
M src/mainboard/google/kahlee/variants/careena/include/variant/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/careena/include/variant/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/careena/include/variant/acpi/routing.asl
M src/mainboard/google/kahlee/variants/careena/include/variant/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/careena/include/variant/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/careena/include/variant/ec.h
M src/mainboard/google/kahlee/variants/careena/include/variant/gpio.h
M src/mainboard/google/kahlee/variants/careena/include/variant/thermal.h
M src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/routing.asl
M src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/grunt/include/variant/gpio.h
M src/mainboard/google/kahlee/variants/grunt/include/variant/thermal.h
M src/mainboard/google/kahlee/variants/liara/include/variant/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/liara/include/variant/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/liara/include/variant/acpi/routing.asl
M src/mainboard/google/kahlee/variants/liara/include/variant/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/liara/include/variant/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/liara/include/variant/ec.h
M src/mainboard/google/kahlee/variants/liara/include/variant/gpio.h
M src/mainboard/google/kahlee/variants/liara/include/variant/thermal.h
M src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/routing.asl
M src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/nuwani/include/variant/ec.h
M src/mainboard/google/kahlee/variants/nuwani/include/variant/gpio.h
M src/mainboard/google/kahlee/variants/nuwani/include/variant/thermal.h
M src/mainboard/google/kahlee/variants/nuwani/mainboard.c
M src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/gpe.asl
M src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/mainboard.asl
M src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/routing.asl
M src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/sleep.asl
M src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/thermal.asl
M src/mainboard/google/kahlee/variants/treeya/include/variant/ec.h
M src/mainboard/google/kahlee/variants/treeya/include/variant/gpio.h
M src/mainboard/google/kahlee/variants/treeya/include/variant/thermal.h
M src/mainboard/google/kahlee/variants/treeya/mainboard.c
75 files changed, 150 insertions(+), 957 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/79/40179/1

diff --git a/src/mainboard/google/kahlee/BiosCallOuts.c b/src/mainboard/google/kahlee/BiosCallOuts.c
index d9d51c9..f9dcf26 100644
--- a/src/mainboard/google/kahlee/BiosCallOuts.c
+++ b/src/mainboard/google/kahlee/BiosCallOuts.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 <amdblocks/agesawrapper.h>
 #include <amdblocks/BiosCallOuts.h>
diff --git a/src/mainboard/google/kahlee/OemCustomize.c b/src/mainboard/google/kahlee/OemCustomize.c
index f39f946..5715f18 100644
--- a/src/mainboard/google/kahlee/OemCustomize.c
+++ b/src/mainboard/google/kahlee/OemCustomize.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 <chip.h>
 #include <amdblocks/agesawrapper.h>
diff --git a/src/mainboard/google/kahlee/bootblock/bootblock.c b/src/mainboard/google/kahlee/bootblock/bootblock.c
index 805793d..613b35b 100644
--- a/src/mainboard/google/kahlee/bootblock/bootblock.c
+++ b/src/mainboard/google/kahlee/bootblock/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/kahlee/chromeos.c b/src/mainboard/google/kahlee/chromeos.c
index f020928..06ec2ec 100644
--- a/src/mainboard/google/kahlee/chromeos.c
+++ b/src/mainboard/google/kahlee/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 <vendorcode/google/chromeos/chromeos.h>
 #include <boot/coreboot_tables.h>
diff --git a/src/mainboard/google/kahlee/dsdt.asl b/src/mainboard/google/kahlee/dsdt.asl
index 574145f..56611c5 100644
--- a/src/mainboard/google/kahlee/dsdt.asl
+++ b/src/mainboard/google/kahlee/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>
 
diff --git a/src/mainboard/google/kahlee/ec.c b/src/mainboard/google/kahlee/ec.c
index cb4723b..32f3d35 100644
--- a/src/mainboard/google/kahlee/ec.c
+++ b/src/mainboard/google/kahlee/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/kahlee/irq_tables.c b/src/mainboard/google/kahlee/irq_tables.c
index b6dfd5d..34dfdae 100644
--- a/src/mainboard/google/kahlee/irq_tables.c
+++ b/src/mainboard/google/kahlee/irq_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 <console/console.h>
 #include <string.h>
diff --git a/src/mainboard/google/kahlee/mainboard.c b/src/mainboard/google/kahlee/mainboard.c
index 968cd7c..24297a3 100644
--- a/src/mainboard/google/kahlee/mainboard.c
+++ b/src/mainboard/google/kahlee/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 <string.h>
 #include <console/console.h>
diff --git a/src/mainboard/google/kahlee/mptable.c b/src/mainboard/google/kahlee/mptable.c
index 130a728..008639a 100644
--- a/src/mainboard/google/kahlee/mptable.c
+++ b/src/mainboard/google/kahlee/mptable.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/smp/mpspec.h>
 #include <arch/ioapic.h>
diff --git a/src/mainboard/google/kahlee/romstage.c b/src/mainboard/google/kahlee/romstage.c
index bfadb5c..aba3ff7 100644
--- a/src/mainboard/google/kahlee/romstage.c
+++ b/src/mainboard/google/kahlee/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 <amdblocks/dimm_spd.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/kahlee/smihandler.c b/src/mainboard/google/kahlee/smihandler.c
index a13dc6c5..078c9cd 100644
--- a/src/mainboard/google/kahlee/smihandler.c
+++ b/src/mainboard/google/kahlee/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 <cpu/x86/smm.h>
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/gpe.asl
index 05cd0b9..a6b622d 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/gpe.asl
@@ -1,14 +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/gpe.asl>
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/mainboard.asl
index d026e9a..304b4f0 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/mainboard.asl
@@ -1,15 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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/mainboard.asl>
 #include <baseboard/acpi/audio.asl>
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/routing.asl b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/routing.asl
index c1896c3..ee9fd82 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/routing.asl
@@ -1,14 +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/routing.asl>
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/sleep.asl
index a401b3a..998ee6f 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/sleep.asl
@@ -1,14 +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/sleep.asl>
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/thermal.asl
index a7e511c..597335e 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/acpi/thermal.asl
@@ -1,14 +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/thermal.asl>
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/ec.h b/src/mainboard/google/kahlee/variants/aleena/include/variant/ec.h
index 0aa2e21..201305d 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/ec.h
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/ec.h
@@ -1,15 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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/ec.h>
 
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/gpio.h b/src/mainboard/google/kahlee/variants/aleena/include/variant/gpio.h
index b9f1e45..37d619d 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/gpio.h
+++ b/src/mainboard/google/kahlee/variants/aleena/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. */
 
 #include <baseboard/gpio.h>
 
diff --git a/src/mainboard/google/kahlee/variants/aleena/include/variant/thermal.h b/src/mainboard/google/kahlee/variants/aleena/include/variant/thermal.h
index b04194f..4cc9eb1 100644
--- a/src/mainboard/google/kahlee/variants/aleena/include/variant/thermal.h
+++ b/src/mainboard/google/kahlee/variants/aleena/include/variant/thermal.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 THERMAL_H
 #define THERMAL_H
diff --git a/src/mainboard/google/kahlee/variants/baseboard/OemCustomize.c b/src/mainboard/google/kahlee/variants/baseboard/OemCustomize.c
index ab128c5..9fccc6d 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/OemCustomize.c
+++ b/src/mainboard/google/kahlee/variants/baseboard/OemCustomize.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 <amdblocks/agesawrapper.h>
 #include <variant/gpio.h>
diff --git a/src/mainboard/google/kahlee/variants/baseboard/gpio.c b/src/mainboard/google/kahlee/variants/baseboard/gpio.c
index f21a97f..4fb60b1 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/gpio.c
+++ b/src/mainboard/google/kahlee/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/variants.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/audio.asl b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/audio.asl
index 0084325..75b61c2 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/audio.asl
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/audio.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 <amdblocks/acpimmio_map.h>
 
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/gpe.asl
index c2be6f3..e7b777d 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/gpe.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 (\_GPE)
 {
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/mainboard.asl
index c118337..168bf56 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/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. */
 
 /* Memory related values */
 Name (LOMH, 0x0)	/* Start of unused memory in C0000-E0000 range */
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/routing.asl b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/routing.asl
index fd760f4..f989bbb 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/routing.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>
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/sleep.asl
index 2dbefb9..9540f3c 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/sleep.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. */
 
 /* Wake status package */
 Name (WKST, Package() { Zero, Zero })
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/thermal.asl
index 54b7d4e..efde141 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/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. */
 
 #include <variant/thermal.h>
 
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h
index 2d8d348..dcc6ac5 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/ec.h
+++ b/src/mainboard/google/kahlee/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 MAINBOARD_EC_H
 #define MAINBOARD_EC_H
diff --git a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/gpio.h b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/gpio.h
index f1de4ab..7893a54 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/gpio.h
+++ b/src/mainboard/google/kahlee/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/kahlee/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
index 348f24f..02d413f 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/kahlee/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__
diff --git a/src/mainboard/google/kahlee/variants/baseboard/mainboard.c b/src/mainboard/google/kahlee/variants/baseboard/mainboard.c
index 95cbd91..fab813f 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/mainboard.c
+++ b/src/mainboard/google/kahlee/variants/baseboard/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 <ec/google/chromeec/ec.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/kahlee/variants/baseboard/memory.c b/src/mainboard/google/kahlee/variants/baseboard/memory.c
index 23d0f79..0e54445 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/memory.c
+++ b/src/mainboard/google/kahlee/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 <console/console.h>
diff --git a/src/mainboard/google/kahlee/variants/baseboard/romstage.c b/src/mainboard/google/kahlee/variants/baseboard/romstage.c
index cbb4d30..0ef0c52 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/romstage.c
+++ b/src/mainboard/google/kahlee/variants/baseboard/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 <baseboard/variants.h>
 #include <ec/google/chromeec/ec.h>
diff --git a/src/mainboard/google/kahlee/variants/baseboard/tpm_tis.c b/src/mainboard/google/kahlee/variants/baseboard/tpm_tis.c
index b3c6fd5..df685f3 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/tpm_tis.c
+++ b/src/mainboard/google/kahlee/variants/baseboard/tpm_tis.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 <security/tpm/tis.h>
 #include <soc/gpio.h>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/gpe.asl
index 05cd0b9..a6b622d 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/gpe.asl
@@ -1,14 +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/gpe.asl>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/mainboard.asl
index d026e9a..304b4f0 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/mainboard.asl
@@ -1,15 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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/mainboard.asl>
 #include <baseboard/acpi/audio.asl>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/routing.asl b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/routing.asl
index c1896c3..ee9fd82 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/routing.asl
@@ -1,14 +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/routing.asl>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/sleep.asl
index a401b3a..998ee6f 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/sleep.asl
@@ -1,14 +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/sleep.asl>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/thermal.asl
index a7e511c..597335e 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/acpi/thermal.asl
@@ -1,14 +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/thermal.asl>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/ec.h b/src/mainboard/google/kahlee/variants/careena/include/variant/ec.h
index e90724e..621ac68 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/ec.h
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/ec.h
@@ -1,15 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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/ec.h>
 
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/gpio.h b/src/mainboard/google/kahlee/variants/careena/include/variant/gpio.h
index bc01d14..4884fc0 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/gpio.h
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/gpio.h
@@ -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/gpio.h>
diff --git a/src/mainboard/google/kahlee/variants/careena/include/variant/thermal.h b/src/mainboard/google/kahlee/variants/careena/include/variant/thermal.h
index b04194f..4cc9eb1 100644
--- a/src/mainboard/google/kahlee/variants/careena/include/variant/thermal.h
+++ b/src/mainboard/google/kahlee/variants/careena/include/variant/thermal.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 THERMAL_H
 #define THERMAL_H
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/gpe.asl
index 750254f..a6b622d 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/gpe.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/gpe.asl>
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/mainboard.asl
index 01d015c..304b4f0 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/grunt/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. */
 
 #include <baseboard/acpi/mainboard.asl>
 #include <baseboard/acpi/audio.asl>
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/routing.asl b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/routing.asl
index 95b3795..ee9fd82 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/routing.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/routing.asl>
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/sleep.asl
index ca791f0..998ee6f 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/sleep.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/sleep.asl>
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/thermal.asl
index cf0aee6..597335e 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/grunt/include/variant/acpi/thermal.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/thermal.asl>
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/gpio.h b/src/mainboard/google/kahlee/variants/grunt/include/variant/gpio.h
index bc01d14..4884fc0 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/gpio.h
+++ b/src/mainboard/google/kahlee/variants/grunt/include/variant/gpio.h
@@ -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/gpio.h>
diff --git a/src/mainboard/google/kahlee/variants/grunt/include/variant/thermal.h b/src/mainboard/google/kahlee/variants/grunt/include/variant/thermal.h
index b04194f..4cc9eb1 100644
--- a/src/mainboard/google/kahlee/variants/grunt/include/variant/thermal.h
+++ b/src/mainboard/google/kahlee/variants/grunt/include/variant/thermal.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 THERMAL_H
 #define THERMAL_H
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/gpe.asl
index 05cd0b9..a6b622d 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/gpe.asl
@@ -1,14 +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/gpe.asl>
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/mainboard.asl
index d026e9a..304b4f0 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/mainboard.asl
@@ -1,15 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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/mainboard.asl>
 #include <baseboard/acpi/audio.asl>
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/routing.asl b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/routing.asl
index c1896c3..ee9fd82 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/routing.asl
@@ -1,14 +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/routing.asl>
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/sleep.asl
index a401b3a..998ee6f 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/sleep.asl
@@ -1,14 +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/sleep.asl>
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/thermal.asl
index a7e511c..597335e 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/acpi/thermal.asl
@@ -1,14 +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/thermal.asl>
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/ec.h b/src/mainboard/google/kahlee/variants/liara/include/variant/ec.h
index e90724e..621ac68 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/ec.h
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/ec.h
@@ -1,15 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  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/ec.h>
 
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/gpio.h b/src/mainboard/google/kahlee/variants/liara/include/variant/gpio.h
index bc01d14..4884fc0 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/gpio.h
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/gpio.h
@@ -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/gpio.h>
diff --git a/src/mainboard/google/kahlee/variants/liara/include/variant/thermal.h b/src/mainboard/google/kahlee/variants/liara/include/variant/thermal.h
index b04194f..4cc9eb1 100644
--- a/src/mainboard/google/kahlee/variants/liara/include/variant/thermal.h
+++ b/src/mainboard/google/kahlee/variants/liara/include/variant/thermal.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 THERMAL_H
 #define THERMAL_H
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/gpe.asl
index 750254f..a6b622d 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/gpe.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/gpe.asl>
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/mainboard.asl
index 01d015c..304b4f0 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/nuwani/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. */
 
 #include <baseboard/acpi/mainboard.asl>
 #include <baseboard/acpi/audio.asl>
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/routing.asl b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/routing.asl
index 95b3795..ee9fd82 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/routing.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/routing.asl>
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/sleep.asl
index ca791f0..998ee6f 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/sleep.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/sleep.asl>
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/thermal.asl
index cf0aee6..597335e 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/nuwani/include/variant/acpi/thermal.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/thermal.asl>
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/ec.h b/src/mainboard/google/kahlee/variants/nuwani/include/variant/ec.h
index 89c53be..d6a7fb1 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/ec.h
+++ b/src/mainboard/google/kahlee/variants/nuwani/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. */
 
 #include <baseboard/ec.h>
 
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/gpio.h b/src/mainboard/google/kahlee/variants/nuwani/include/variant/gpio.h
index b9f1e45..37d619d 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/gpio.h
+++ b/src/mainboard/google/kahlee/variants/nuwani/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. */
 
 #include <baseboard/gpio.h>
 
diff --git a/src/mainboard/google/kahlee/variants/nuwani/include/variant/thermal.h b/src/mainboard/google/kahlee/variants/nuwani/include/variant/thermal.h
index b04194f..4cc9eb1 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/include/variant/thermal.h
+++ b/src/mainboard/google/kahlee/variants/nuwani/include/variant/thermal.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 THERMAL_H
 #define THERMAL_H
diff --git a/src/mainboard/google/kahlee/variants/nuwani/mainboard.c b/src/mainboard/google/kahlee/variants/nuwani/mainboard.c
index cf10d8f..f54b0db 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/mainboard.c
+++ b/src/mainboard/google/kahlee/variants/nuwani/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 <ec/google/chromeec/ec.h>
 #include <baseboard/variants.h>
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/gpe.asl b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/gpe.asl
index 750254f..a6b622d 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/gpe.asl
+++ b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/gpe.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/gpe.asl>
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/mainboard.asl b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/mainboard.asl
index 01d015c..304b4f0 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/mainboard.asl
+++ b/src/mainboard/google/kahlee/variants/treeya/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. */
 
 #include <baseboard/acpi/mainboard.asl>
 #include <baseboard/acpi/audio.asl>
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/routing.asl b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/routing.asl
index 95b3795..ee9fd82 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/routing.asl
+++ b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/routing.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/routing.asl>
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/sleep.asl b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/sleep.asl
index ca791f0..998ee6f 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/sleep.asl
+++ b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/sleep.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/sleep.asl>
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/thermal.asl b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/thermal.asl
index cf0aee6..597335e 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/thermal.asl
+++ b/src/mainboard/google/kahlee/variants/treeya/include/variant/acpi/thermal.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/thermal.asl>
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/ec.h b/src/mainboard/google/kahlee/variants/treeya/include/variant/ec.h
index 89c53be..d6a7fb1 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/ec.h
+++ b/src/mainboard/google/kahlee/variants/treeya/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. */
 
 #include <baseboard/ec.h>
 
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/gpio.h b/src/mainboard/google/kahlee/variants/treeya/include/variant/gpio.h
index b9f1e45..37d619d 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/gpio.h
+++ b/src/mainboard/google/kahlee/variants/treeya/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. */
 
 #include <baseboard/gpio.h>
 
diff --git a/src/mainboard/google/kahlee/variants/treeya/include/variant/thermal.h b/src/mainboard/google/kahlee/variants/treeya/include/variant/thermal.h
index b04194f..4cc9eb1 100644
--- a/src/mainboard/google/kahlee/variants/treeya/include/variant/thermal.h
+++ b/src/mainboard/google/kahlee/variants/treeya/include/variant/thermal.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 THERMAL_H
 #define THERMAL_H
diff --git a/src/mainboard/google/kahlee/variants/treeya/mainboard.c b/src/mainboard/google/kahlee/variants/treeya/mainboard.c
index cf10d8f..f54b0db 100644
--- a/src/mainboard/google/kahlee/variants/treeya/mainboard.c
+++ b/src/mainboard/google/kahlee/variants/treeya/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 <ec/google/chromeec/ec.h>
 #include <baseboard/variants.h>

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