diff --git a/src/mainboard/system76/lemp9/acpi/ac.asl b/src/mainboard/system76/lemp9/acpi/ac.asl
index 2355ed5fbc..6bd9414ddf 100644
--- a/src/mainboard/system76/lemp9/acpi/ac.asl
+++ b/src/mainboard/system76/lemp9/acpi/ac.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (AC)
 {
diff --git a/src/mainboard/system76/lemp9/acpi/battery.asl b/src/mainboard/system76/lemp9/acpi/battery.asl
index cf2ce19f4c..e64e25a706 100644
--- a/src/mainboard/system76/lemp9/acpi/battery.asl
+++ b/src/mainboard/system76/lemp9/acpi/battery.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (BAT0)
 {
diff --git a/src/mainboard/system76/lemp9/acpi/buttons.asl b/src/mainboard/system76/lemp9/acpi/buttons.asl
index f8f2910970..e3bf9ec7ef 100644
--- a/src/mainboard/system76/lemp9/acpi/buttons.asl
+++ b/src/mainboard/system76/lemp9/acpi/buttons.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (PWRB)
 {
diff --git a/src/mainboard/system76/lemp9/acpi/ec.asl b/src/mainboard/system76/lemp9/acpi/ec.asl
index 0e3a68dda5..cca3d27712 100644
--- a/src/mainboard/system76/lemp9/acpi/ec.asl
+++ b/src/mainboard/system76/lemp9/acpi/ec.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (EC0)
 {
diff --git a/src/mainboard/system76/lemp9/acpi/ec_ram.asl b/src/mainboard/system76/lemp9/acpi/ec_ram.asl
index ea57291cf4..0d70fa1cf4 100644
--- a/src/mainboard/system76/lemp9/acpi/ec_ram.asl
+++ b/src/mainboard/system76/lemp9/acpi/ec_ram.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. */
 
 OperationRegion (ERAM, EmbeddedControl, Zero, 0xFF)
 Field (ERAM, ByteAcc, Lock, Preserve)
diff --git a/src/mainboard/system76/lemp9/acpi/gpe.asl b/src/mainboard/system76/lemp9/acpi/gpe.asl
index 99f77f347d..70a6449125 100644
--- a/src/mainboard/system76/lemp9/acpi/gpe.asl
+++ b/src/mainboard/system76/lemp9/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. */
 
 // GPP_D9 SCI
 Method (_L29, 0, Serialized) {
diff --git a/src/mainboard/system76/lemp9/acpi/hid.asl b/src/mainboard/system76/lemp9/acpi/hid.asl
index f89bc82208..4567bb546b 100644
--- a/src/mainboard/system76/lemp9/acpi/hid.asl
+++ b/src/mainboard/system76/lemp9/acpi/hid.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (HIDD)
 {
diff --git a/src/mainboard/system76/lemp9/acpi/lid.asl b/src/mainboard/system76/lemp9/acpi/lid.asl
index 3d7dddbc20..ae38f3ec83 100644
--- a/src/mainboard/system76/lemp9/acpi/lid.asl
+++ b/src/mainboard/system76/lemp9/acpi/lid.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 Device (LID0)
 {
diff --git a/src/mainboard/system76/lemp9/acpi/mainboard.asl b/src/mainboard/system76/lemp9/acpi/mainboard.asl
index 1f2b33d2a8..d729c788c6 100644
--- a/src/mainboard/system76/lemp9/acpi/mainboard.asl
+++ b/src/mainboard/system76/lemp9/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. */
 
 Scope (\_SB) {
 	#include "ac.asl"
diff --git a/src/mainboard/system76/lemp9/acpi/s76.asl b/src/mainboard/system76/lemp9/acpi/s76.asl
index 042e7e2431..e4cf619f50 100644
--- a/src/mainboard/system76/lemp9/acpi/s76.asl
+++ b/src/mainboard/system76/lemp9/acpi/s76.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. */
 
 // Notifications:
 //   0x80 - hardware backlight toggle
diff --git a/src/mainboard/system76/lemp9/acpi/sleep.asl b/src/mainboard/system76/lemp9/acpi/sleep.asl
index bb01a96a9b..ac5276041e 100644
--- a/src/mainboard/system76/lemp9/acpi/sleep.asl
+++ b/src/mainboard/system76/lemp9/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. */
 
 /* Method called from _PTS prior to enter sleep state */
 Method (MPTS, 1) {
diff --git a/src/mainboard/system76/lemp9/bootblock.c b/src/mainboard/system76/lemp9/bootblock.c
index 989ea3cc14..b591932150 100644
--- a/src/mainboard/system76/lemp9/bootblock.c
+++ b/src/mainboard/system76/lemp9/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 <bootblock_common.h>
 #include <gpio.h>
diff --git a/src/mainboard/system76/lemp9/dsdt.asl b/src/mainboard/system76/lemp9/dsdt.asl
index 7e3fdf503b..64d5399011 100644
--- a/src/mainboard/system76/lemp9/dsdt.asl
+++ b/src/mainboard/system76/lemp9/dsdt.asl
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <arch/acpi.h>
 DefinitionBlock(
diff --git a/src/mainboard/system76/lemp9/gpio.h b/src/mainboard/system76/lemp9/gpio.h
index f837ea4c72..1cbbbece81 100644
--- a/src/mainboard/system76/lemp9/gpio.h
+++ b/src/mainboard/system76/lemp9/gpio.h
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #ifndef MAINBOARD_GPIO_H
 #define MAINBOARD_GPIO_H
diff --git a/src/mainboard/system76/lemp9/hda_verb.c b/src/mainboard/system76/lemp9/hda_verb.c
index 4f8aa2d117..0ba21af4b1 100644
--- a/src/mainboard/system76/lemp9/hda_verb.c
+++ b/src/mainboard/system76/lemp9/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; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <device/azalia_device.h>
 
diff --git a/src/mainboard/system76/lemp9/ramstage.c b/src/mainboard/system76/lemp9/ramstage.c
index e73a892ef3..f0f88c9bd2 100644
--- a/src/mainboard/system76/lemp9/ramstage.c
+++ b/src/mainboard/system76/lemp9/ramstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/ramstage.h>
 #include "gpio.h"
diff --git a/src/mainboard/system76/lemp9/romstage.c b/src/mainboard/system76/lemp9/romstage.c
index e456ffc51f..1921cae663 100644
--- a/src/mainboard/system76/lemp9/romstage.c
+++ b/src/mainboard/system76/lemp9/romstage.c
@@ -1,16 +1,5 @@
-/*
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 #include <soc/cnl_memcfg_init.h>
 #include <soc/romstage.h>