treewide: replace GPLv2 long form headers with SPDX header

This replaces GPLv2-or-later and GPLv2-only long form text with the
short SPDX identifiers.

Commands used:
perl -i -p0e 's|/\*[*\n\t ]*This program is free software[:;].*you.*can.*redistribute.*it.*and/or.*modify.*it.*under.*the.*terms.*of.*the.*GNU.*General.*Public.*License.*as.*published.*by.*the.*Free.*Software.*Foundation[;,].*version.*2.*of.*the.*License.*or.*(at.*your.*option).*any.*later.*version.+This.*program.*is.*distributed.*in.*the.*hope.*that.*it.*will.*be.*useful,.*but.*;.*without.*even.*the.*implied.*warranty.*of.*MERCHANTABILITY.*or.*FITNESS.*FOR.*A.*PARTICULAR.*PURPOSE..*.*See.*the.*GNU.*General.*Public.*License for more details.[\n\t ]*\*/|/* SPDX-License-Identifier: GPL-2.0-or-later */|s' $(cat filelist)

perl -i -p0e 's|/\*[*\n\t ]*This program is free software[:;].*you.*can.*redistribute.*it.*and/or.*modify.*it.*under.*the.*terms.*of.*the.*GNU.*General.*Public.*License.*as.*published.*by.*the.*Free.*Software.*Foundation[;,].*version.*2.+This.*program.*is.*distributed.*in.*the.*hope.*that.*it.*will.*be.*useful,.*but.*;.*without.*even.*the.*implied.*warranty.*of.*MERCHANTABILITY.*or.*FITNESS.*FOR.*A.*PARTICULAR.*PURPOSE..*.*See.*the.*GNU.*General.*Public.*License for more details.[\n\t ]*\*/|/* SPDX-License-Identifier: GPL-2.0-only */|s' $(cat filelist)

perl -i -p0e 's|/\*[*\n\t ]*This program is free software[:;].*you.*can.*redistribute.*it.*and/or.*modify.*it.*under.*the.*terms.*of.*the.*GNU.*General.*Public.*License.*version.*2.*as.*published.*by.*the.*Free.*Software.*Foundation[.;,].+This.*program.*is.*distributed.*in.*the.*hope.*that.*it.*will.*be.*useful,.*but.*;.*without.*even.*the.*implied.*warranty.*of.*MERCHANTABILITY.*or.*FITNESS.*FOR.*A.*PARTICULAR.*PURPOSE..*.*See.*the.*GNU.*General.*Public.*License for more details.[\n\t ]*\*/|/* SPDX-License-Identifier: GPL-2.0-only */|s' $(cat filelist)

perl -i -p0e 's|/\*[*\n\t ]*This software is licensed under.*the.*terms.*of.*the.*GNU.*General.*Public.*License.*version.*2.*as.*published.*by.*the.*Free.*Software.*Foundation,.+This.*program.*is.*distributed.*in.*the.*hope.*that.*it.*will.*be.*useful,.*but.*;.*without.*even.*the.*implied.*warranty.*of.*MERCHANTABILITY.*or.*FITNESS.*FOR.*A.*PARTICULAR.*PURPOSE..*.*See.*the.*GNU.*General.*Public.*License for more details.[\n\t ]*\*/|/* SPDX-License-Identifier: GPL-2.0-only */|s' $(cat filelist)

Change-Id: I7a746088a35633c11fc7ebe86006e96458a1abf8
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41066
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
diff --git a/src/mainboard/asus/h61m-cs/acpi/platform.asl b/src/mainboard/asus/h61m-cs/acpi/platform.asl
index 89f8f73..17460c7 100644
--- a/src/mainboard/asus/h61m-cs/acpi/platform.asl
+++ b/src/mainboard/asus/h61m-cs/acpi/platform.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 Method(_WAK,1)
 {
diff --git a/src/mainboard/asus/h61m-cs/dsdt.asl b/src/mainboard/asus/h61m-cs/dsdt.asl
index b8e4df3..cabf179 100644
--- a/src/mainboard/asus/h61m-cs/dsdt.asl
+++ b/src/mainboard/asus/h61m-cs/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <acpi/acpi.h>
 DefinitionBlock(
diff --git a/src/mainboard/asus/maximus_iv_gene-z/acpi/platform.asl b/src/mainboard/asus/maximus_iv_gene-z/acpi/platform.asl
index 81591d6..2238209 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/acpi/platform.asl
+++ b/src/mainboard/asus/maximus_iv_gene-z/acpi/platform.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 Method(_WAK, 1)
 {
diff --git a/src/mainboard/asus/maximus_iv_gene-z/acpi/superio.asl b/src/mainboard/asus/maximus_iv_gene-z/acpi/superio.asl
index a6fe5a7..490e449 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/acpi/superio.asl
+++ b/src/mainboard/asus/maximus_iv_gene-z/acpi/superio.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <drivers/pc80/pc/ps2_controller.asl>
diff --git a/src/mainboard/asus/maximus_iv_gene-z/acpi_tables.c b/src/mainboard/asus/maximus_iv_gene-z/acpi_tables.c
index f97249d..66cd5fc 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/acpi_tables.c
+++ b/src/mainboard/asus/maximus_iv_gene-z/acpi_tables.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <southbridge/intel/bd82x6x/nvs.h>
 
diff --git a/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl b/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl
index eec65b8..9e787ce 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl
+++ b/src/mainboard/asus/maximus_iv_gene-z/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <acpi/acpi.h>
 DefinitionBlock(
diff --git a/src/mainboard/asus/maximus_iv_gene-z/early_init.c b/src/mainboard/asus/maximus_iv_gene-z/early_init.c
index aae5ee6..e71f233 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/early_init.c
+++ b/src/mainboard/asus/maximus_iv_gene-z/early_init.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <bootblock_common.h>
 #include <device/pnp_ops.h>
diff --git a/src/mainboard/asus/maximus_iv_gene-z/gpio.c b/src/mainboard/asus/maximus_iv_gene-z/gpio.c
index 4b8462d..ad567ba 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/gpio.c
+++ b/src/mainboard/asus/maximus_iv_gene-z/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <southbridge/intel/common/gpio.h>
 
diff --git a/src/mainboard/asus/maximus_iv_gene-z/hda_verb.c b/src/mainboard/asus/maximus_iv_gene-z/hda_verb.c
index 0fd8d78..c41035a 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/hda_verb.c
+++ b/src/mainboard/asus/maximus_iv_gene-z/hda_verb.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <stdint.h>
 #include <device/azalia_device.h>
diff --git a/src/mainboard/asus/maximus_iv_gene-z/mainboard.c b/src/mainboard/asus/maximus_iv_gene-z/mainboard.c
index 01b70e0..fe670ef 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/mainboard.c
+++ b/src/mainboard/asus/maximus_iv_gene-z/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <device/device.h>
 #include <drivers/intel/gma/int15.h>
diff --git a/src/mainboard/asus/p2b/variants/p2b-d/irq_tables.c b/src/mainboard/asus/p2b/variants/p2b-d/irq_tables.c
index 8822035..29442c8 100644
--- a/src/mainboard/asus/p2b/variants/p2b-d/irq_tables.c
+++ b/src/mainboard/asus/p2b/variants/p2b-d/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/pirq_routing.h>
 
diff --git a/src/mainboard/asus/p2b/variants/p2b-d/mptable.c b/src/mainboard/asus/p2b/variants/p2b-d/mptable.c
index 2c7ac60..463ca6c 100644
--- a/src/mainboard/asus/p2b/variants/p2b-d/mptable.c
+++ b/src/mainboard/asus/p2b/variants/p2b-d/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/smp/mpspec.h>
 #include <arch/ioapic.h>
diff --git a/src/mainboard/asus/p2b/variants/p2b-ds/irq_tables.c b/src/mainboard/asus/p2b/variants/p2b-ds/irq_tables.c
index 84cd137..7d2c567 100644
--- a/src/mainboard/asus/p2b/variants/p2b-ds/irq_tables.c
+++ b/src/mainboard/asus/p2b/variants/p2b-ds/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/pirq_routing.h>
 
diff --git a/src/mainboard/asus/p2b/variants/p2b-ds/mptable.c b/src/mainboard/asus/p2b/variants/p2b-ds/mptable.c
index 0c09233..bd1891d 100644
--- a/src/mainboard/asus/p2b/variants/p2b-ds/mptable.c
+++ b/src/mainboard/asus/p2b/variants/p2b-ds/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/smp/mpspec.h>
 #include <arch/ioapic.h>
diff --git a/src/mainboard/asus/p2b/variants/p2b-f/irq_tables.c b/src/mainboard/asus/p2b/variants/p2b-f/irq_tables.c
index eab9086..4bd2c98 100644
--- a/src/mainboard/asus/p2b/variants/p2b-f/irq_tables.c
+++ b/src/mainboard/asus/p2b/variants/p2b-f/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/pirq_routing.h>
 
diff --git a/src/mainboard/asus/p2b/variants/p2b-ls/irq_tables.c b/src/mainboard/asus/p2b/variants/p2b-ls/irq_tables.c
index d4b9272..04b6ed2 100644
--- a/src/mainboard/asus/p2b/variants/p2b-ls/irq_tables.c
+++ b/src/mainboard/asus/p2b/variants/p2b-ls/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/pirq_routing.h>
 
diff --git a/src/mainboard/asus/p2b/variants/p2b/irq_tables.c b/src/mainboard/asus/p2b/variants/p2b/irq_tables.c
index d0360d9..578ee09 100644
--- a/src/mainboard/asus/p2b/variants/p2b/irq_tables.c
+++ b/src/mainboard/asus/p2b/variants/p2b/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/pirq_routing.h>
 
diff --git a/src/mainboard/asus/p3b-f/irq_tables.c b/src/mainboard/asus/p3b-f/irq_tables.c
index 5c10ec4..c0c5aa2 100644
--- a/src/mainboard/asus/p3b-f/irq_tables.c
+++ b/src/mainboard/asus/p3b-f/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/pirq_routing.h>
 
diff --git a/src/mainboard/asus/p3b-f/romstage.c b/src/mainboard/asus/p3b-f/romstage.c
index 56f5253..475da28 100644
--- a/src/mainboard/asus/p3b-f/romstage.c
+++ b/src/mainboard/asus/p3b-f/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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <arch/io.h>
 #include <southbridge/intel/i82371eb/i82371eb.h>
diff --git a/src/mainboard/asus/p5qc/early_init.c b/src/mainboard/asus/p5qc/early_init.c
index 5b0539d..bab5b1c 100644
--- a/src/mainboard/asus/p5qc/early_init.c
+++ b/src/mainboard/asus/p5qc/early_init.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <bootblock_common.h>
 #include <southbridge/intel/i82801jx/i82801jx.h>
diff --git a/src/mainboard/asus/p5qc/hda_verb.c b/src/mainboard/asus/p5qc/hda_verb.c
index b760749..cec9bd5 100644
--- a/src/mainboard/asus/p5qc/hda_verb.c
+++ b/src/mainboard/asus/p5qc/hda_verb.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; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <device/azalia_device.h>
 
diff --git a/src/mainboard/asus/p5ql-em/early_init.c b/src/mainboard/asus/p5ql-em/early_init.c
index 4585a98..99a0f6e 100644
--- a/src/mainboard/asus/p5ql-em/early_init.c
+++ b/src/mainboard/asus/p5ql-em/early_init.c
@@ -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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <bootblock_common.h>
 #include <device/pnp_ops.h>
diff --git a/src/mainboard/asus/p5ql-em/hda_verb.c b/src/mainboard/asus/p5ql-em/hda_verb.c
index 8dbf431..5178d3f 100644
--- a/src/mainboard/asus/p5ql-em/hda_verb.c
+++ b/src/mainboard/asus/p5ql-em/hda_verb.c
@@ -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; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <device/azalia_device.h>
 
diff --git a/src/mainboard/asus/p5qpl-am/early_init.c b/src/mainboard/asus/p5qpl-am/early_init.c
index 5556536..66efd52 100644
--- a/src/mainboard/asus/p5qpl-am/early_init.c
+++ b/src/mainboard/asus/p5qpl-am/early_init.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <bootblock_common.h>
 #include <cf9_reset.h>
diff --git a/src/mainboard/asus/p5qpl-am/hda_verb.c b/src/mainboard/asus/p5qpl-am/hda_verb.c
index cca113c..126c556 100644
--- a/src/mainboard/asus/p5qpl-am/hda_verb.c
+++ b/src/mainboard/asus/p5qpl-am/hda_verb.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; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <device/azalia_device.h>
 
diff --git a/src/mainboard/asus/p8h61-m_lx/acpi/platform.asl b/src/mainboard/asus/p8h61-m_lx/acpi/platform.asl
index 81591d6..2238209 100644
--- a/src/mainboard/asus/p8h61-m_lx/acpi/platform.asl
+++ b/src/mainboard/asus/p8h61-m_lx/acpi/platform.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 Method(_WAK, 1)
 {
diff --git a/src/mainboard/asus/p8h61-m_lx/acpi/superio.asl b/src/mainboard/asus/p8h61-m_lx/acpi/superio.asl
index 43ab19a..8cb29ea 100644
--- a/src/mainboard/asus/p8h61-m_lx/acpi/superio.asl
+++ b/src/mainboard/asus/p8h61-m_lx/acpi/superio.asl
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #define SUPERIO_DEV		SIO0
 #define SUPERIO_PNP_BASE	0x2e
diff --git a/src/mainboard/asus/p8h61-m_lx/acpi_tables.c b/src/mainboard/asus/p8h61-m_lx/acpi_tables.c
index f97249d..66cd5fc 100644
--- a/src/mainboard/asus/p8h61-m_lx/acpi_tables.c
+++ b/src/mainboard/asus/p8h61-m_lx/acpi_tables.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <southbridge/intel/bd82x6x/nvs.h>
 
diff --git a/src/mainboard/asus/p8h61-m_lx/dsdt.asl b/src/mainboard/asus/p8h61-m_lx/dsdt.asl
index eec65b8..9e787ce 100644
--- a/src/mainboard/asus/p8h61-m_lx/dsdt.asl
+++ b/src/mainboard/asus/p8h61-m_lx/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <acpi/acpi.h>
 DefinitionBlock(
diff --git a/src/mainboard/asus/p8h61-m_lx/early_init.c b/src/mainboard/asus/p8h61-m_lx/early_init.c
index 4021781..970b8e9 100644
--- a/src/mainboard/asus/p8h61-m_lx/early_init.c
+++ b/src/mainboard/asus/p8h61-m_lx/early_init.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <bootblock_common.h>
 #include <device/dram/ddr3.h>
diff --git a/src/mainboard/asus/p8h61-m_lx/gpio.c b/src/mainboard/asus/p8h61-m_lx/gpio.c
index e02359f..6bcab02 100644
--- a/src/mainboard/asus/p8h61-m_lx/gpio.c
+++ b/src/mainboard/asus/p8h61-m_lx/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <southbridge/intel/common/gpio.h>
 
diff --git a/src/mainboard/asus/p8h61-m_lx/hda_verb.c b/src/mainboard/asus/p8h61-m_lx/hda_verb.c
index 417ae1b..d99291e 100644
--- a/src/mainboard/asus/p8h61-m_lx/hda_verb.c
+++ b/src/mainboard/asus/p8h61-m_lx/hda_verb.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <stdint.h>
 #include <device/azalia_device.h>
diff --git a/src/mainboard/asus/p8h61-m_lx/mainboard.c b/src/mainboard/asus/p8h61-m_lx/mainboard.c
index 01b70e0..fe670ef 100644
--- a/src/mainboard/asus/p8h61-m_lx/mainboard.c
+++ b/src/mainboard/asus/p8h61-m_lx/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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <device/device.h>
 #include <drivers/intel/gma/int15.h>
diff --git a/src/mainboard/asus/p8h61-m_pro/acpi/superio.asl b/src/mainboard/asus/p8h61-m_pro/acpi/superio.asl
index a6fe5a7..490e449 100644
--- a/src/mainboard/asus/p8h61-m_pro/acpi/superio.asl
+++ b/src/mainboard/asus/p8h61-m_pro/acpi/superio.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <drivers/pc80/pc/ps2_controller.asl>
diff --git a/src/mainboard/asus/p8z77-m_pro/acpi/platform.asl b/src/mainboard/asus/p8z77-m_pro/acpi/platform.asl
index 89f8f73..17460c7 100644
--- a/src/mainboard/asus/p8z77-m_pro/acpi/platform.asl
+++ b/src/mainboard/asus/p8z77-m_pro/acpi/platform.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 Method(_WAK,1)
 {
diff --git a/src/mainboard/asus/p8z77-m_pro/acpi/superio.asl b/src/mainboard/asus/p8z77-m_pro/acpi/superio.asl
index a6fe5a7..490e449 100644
--- a/src/mainboard/asus/p8z77-m_pro/acpi/superio.asl
+++ b/src/mainboard/asus/p8z77-m_pro/acpi/superio.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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include <drivers/pc80/pc/ps2_controller.asl>
diff --git a/src/mainboard/asus/p8z77-m_pro/acpi_tables.c b/src/mainboard/asus/p8z77-m_pro/acpi_tables.c
index 3f69f12..65b59e8 100644
--- a/src/mainboard/asus/p8z77-m_pro/acpi_tables.c
+++ b/src/mainboard/asus/p8z77-m_pro/acpi_tables.c
@@ -1,16 +1,5 @@
 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of
- * the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <southbridge/intel/bd82x6x/nvs.h>