src/: Replace GPL boilerplate with SPDX headers

Used commands:
perl -i -p0e 's|\/\*[\s*]*.*is free software[:;][\s*]*you[\s*]*can[\s*]*redistribute[\s*]*it[\s*]*and\/or[\s*]*modify[\s*]*it[\s*]*under[\s*]*the[\s*]*terms[\s*]*of[\s*]*the[\s*]*GNU[\s*]*General[\s*]*Public[\s*]*License[\s*]*as[\s*]*published[\s*]*by[\s*]*the[\s*]*Free[\s*]*Software[\s*]*Foundation[;,][\s*]*version[\s*]*2[\s*]*of[\s*]*the[\s*]*License.[\s*]*This[\s*]*program[\s*]*is[\s*]*distributed[\s*]*in[\s*]*the[\s*]*hope[\s*]*that[\s*]*it[\s*]*will[\s*]*be[\s*]*useful,[\s*]*but[\s*]*WITHOUT[\s*]*ANY[\s*]*WARRANTY;[\s*]*without[\s*]*even[\s*]*the[\s*]*implied[\s*]*warranty[\s*]*of[\s*]*MERCHANTABILITY[\s*]*or[\s*]*FITNESS[\s*]*FOR[\s*]*A[\s*]*PARTICULAR[\s*]*PURPOSE.[\s*]*See[\s*]*the[\s*]*GNU[\s*]*General[\s*]*Public[\s*]*License[\s*]*for[\s*]*more[\s*]*details.[\s*]*\*\/|/* SPDX-License-Identifier: GPL-2.0-only */|' $(cat filelist)

perl -i -p0e 's|\/\*[\s*]*.*is[\s*]*free[\s*]*software[:;][\s*]*you[\s*]*can[\s*]*redistribute[\s*]*it[\s*]*and/or[\s*]*modify[\s*]*it[\s*]*under[\s*]*the[\s*]*terms[\s*]*of[\s*]*the[\s*]*GNU[\s*]*General[\s*]*Public[\s*]*License[\s*]*as[\s*]*published[\s*]*by[\s*]*the[\s*]*Free[\s*]*Software[\s*]*Foundation[;,][\s*]*either[\s*]*version[\s*]*2[\s*]*of[\s*]*the[\s*]*License,[\s*]*or[\s*]*.at[\s*]*your[\s*]*option.[\s*]*any[\s*]*later[\s*]*version.[\s*]*This[\s*]*program[\s*]*is[\s*]*distributed[\s*]*in[\s*]*the[\s*]*hope[\s*]*that[\s*]*it[\s*]*will[\s*]*be[\s*]*useful,[\s*]*but[\s*]*WITHOUT[\s*]*ANY[\s*]*WARRANTY;[\s*]*without[\s*]*even[\s*]*the[\s*]*implied[\s*]*warranty[\s*]*of[\s*]*MERCHANTABILITY[\s*]*or[\s*]*FITNESS[\s*]*FOR[\s*]*A[\s*]*PARTICULAR[\s*]*PURPOSE.[\s*]*See[\s*]*the[\s*]*GNU[\s*]*General[\s*]*Public[\s*]*License[\s*]*for[\s*]*more[\s*]*details.[\s*]*\*\/|/* SPDX-License-Identifier: GPL-2.0-or-later */|' $(cat filelist)

perl -i -p0e 's|\/\*[\s*]*.*is[\s*#]*free[\s*#]*software[;:,][\s*#]*you[\s*#]*can[\s*#]*redistribute[\s*#]*it[\s*#]*and/or[\s*#]*modify[\s*#]*it[\s*#]*under[\s*#]*the[\s*#]*terms[\s*#]*of[\s*#]*the[\s*#]*GNU[\s*#]*General[\s*#]*Public[\s*#]*License[\s*#]*as[\s*#]*published[\s*#]*by[\s*#]*the[\s*#]*Free[\s*#]*Software[\s*#]*Foundation[;:,][\s*#]*either[\s*#]*version[\s*#]*3[\s*#]*of[\s*#]*the[\s*#]*License[;:,][\s*#]*or[\s*#]*.at[\s*#]*your[\s*#]*option.[\s*#]*any[\s*#]*later[\s*#]*version.[\s*#]*This[\s*#]*program[\s*#]*is[\s*#]*distributed[\s*#]*in[\s*#]*the[\s*#]*hope[\s*#]*that[\s*#]*it[\s*#]*will[\s*#]*be[\s*#]*useful[;:,][\s*#]*but[\s*#]*WITHOUT[\s*#]*ANY[\s*#]*WARRANTY[;:,][\s*#]*without[\s*#]*even[\s*#]*the[\s*#]*implied[\s*#]*warranty[\s*#]*of[\s*#]*MERCHANTABILITY[\s*#]*or[\s*#]*FITNESS[\s*#]*FOR[\s*#]*A[\s*#]*PARTICULAR[\s*#]*PURPOSE.[\s*#]*See[\s*#]*the[\s*#]*GNU[\s*#]*General[\s*#]*Public[\s*#]*License[\s*#]*for[\s*#]*more[\s*#]*details.[\s*]*\*\/|/* SPDX-License-Identifier: GPL-3.0-or-later */|' $(cat filelist)

perl -i -p0e 's|(\#\#*)[\w]*.*is free software[:;][\#\s]*you[\#\s]*can[\#\s]*redistribute[\#\s]*it[\#\s]*and\/or[\#\s]*modify[\#\s]*it[\s\#]*under[\s \#]*the[\s\#]*terms[\s\#]*of[\s\#]*the[\s\#]*GNU[\s\#]*General[\s\#]*Public[\s\#]*License[\s\#]*as[\s\#]*published[\s\#]*by[\s\#]*the[\s\#]*Free[\s\#]*Software[\s\#]*Foundation[;,][\s\#]*version[\s\#]*2[\s\#]*of[\s\#]*the[\s\#]*License.*[\s\#]*This[\s\#]*program[\s\#]*is[\s\#]*distributed[\s\#]*in[\s\#]*the[\s\#]*hope[\s\#]*that[\s\#]*it[\s\#]*will[\#\s]*be[\#\s]*useful,[\#\s]*but[\#\s]*WITHOUT[\#\s]*ANY[\#\s]*WARRANTY;[\#\s]*without[\#\s]*even[\#\s]*the[\#\s]*implied[\#\s]*warranty[\#\s]*of[\#\s]*MERCHANTABILITY[\#\s]*or[\#\s]*FITNESS[\#\s]*FOR[\#\s]*A[\#\s]*PARTICULAR[\#\s]*PURPOSE.[\#\s]*See[\#\s]*the[\#\s]*GNU[\#\s]*General[\#\s]*Public[\#\s]*License[\#\s]*for[\#\s]*more[\#\s]*details.\s(#* *\n)*|\1 SPDX-License-Identifier: GPL-2.0-only\n\n|' $(cat filelist)

perl -i -p0e 's|(\#\#*)[\w*]*.*is free software[:;][\s*]*you[\s*]*can[\s*]*redistribute[\s*]*it[\s*]*and\/or[\s*]*modify[\s*]*it[\s*]*under[\s*]*the[\s*]*terms[\s*]*of[\s*]*the[\s*]*GNU[\s*]*General[\s*]*Public[\s*]*License[\s*]*as[\s*]*published[\s*]*by[\s*]*the[\s*]*Free[\s*]*Software[\s*]*Foundation[;,][\s*]*version[\s*]*2[\s*]*of[\s*]*the[\s*]*License.[\s*]*This[\s*]*program[\s*]*is[\s*]*distributed[\s*]*in[\s*]*the[\s*]*hope[\s*]*that[\s*]*it[\s*]*will[\s*]*be[\s*]*useful,[\s*]*but[\s*]*WITHOUT[\s*]*ANY[\s*]*WARRANTY;[\s*]*without[\s*]*even[\s*]*the[\s*]*implied[\s*]*warranty[\s*]*of[\s*]*MERCHANTABILITY[\s*]*or[\s*]*FITNESS[\s*]*FOR[\s*]*A[\s*]*PARTICULAR[\s*]*PURPOSE.[\s*]*See[\s*]*the[\s*]*GNU[\s*]*General[\s*]*Public[\s*]*License[\s*]*for[\s*]*more[\s*]*details.\s(#* *\n)*|\1 SPDX-License-Identifier: GPL-2.0-only\n\n|' $(cat filelist)

Change-Id: Ia01908544f4b92a2e06ea621eca548e582728280
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41178
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

19 files changed, 25 insertions, 171 deletions

diff --git a/src/mainboard/google/kahlee/Kconfig b/src/mainboard/google/kahlee/Kconfig
index 85384dc019..29cc3c72c2 100644
--- a/src/mainboard/google/kahlee/Kconfig
+++ b/src/mainboard/google/kahlee/Kconfig
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 config BOARD_GOOGLE_BASEBOARD_KAHLEE
 	bool
diff --git a/src/mainboard/google/kahlee/Makefile.inc b/src/mainboard/google/kahlee/Makefile.inc
index 097566c1e5..2a770b6195 100644
--- a/src/mainboard/google/kahlee/Makefile.inc
+++ b/src/mainboard/google/kahlee/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += bootblock/bootblock.c
 bootblock-y += BiosCallOuts.c
diff --git a/src/mainboard/google/kahlee/variants/aleena/Makefile.inc b/src/mainboard/google/kahlee/variants/aleena/Makefile.inc
index ba3228d6c3..c93956bab3 100644
--- a/src/mainboard/google/kahlee/variants/aleena/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/aleena/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ../baseboard/spd
 
diff --git a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
index 864e0cd92a..2cac8472d0 100644
--- a/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/aleena/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc b/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc
index efcf35de0f..6e46166765 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/baseboard/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 bootblock-y += gpio.c
 bootblock-y += OemCustomize.c
diff --git a/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc
index bc3f6b6879..82930beaf3 100644
--- a/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/baseboard/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kahlee/variants/careena/Makefile.inc b/src/mainboard/google/kahlee/variants/careena/Makefile.inc
index dd9ff4eded..dcd7d302a4 100644
--- a/src/mainboard/google/kahlee/variants/careena/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/careena/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ./spd
 
diff --git a/src/mainboard/google/kahlee/variants/careena/devicetree.cb b/src/mainboard/google/kahlee/variants/careena/devicetree.cb
index 6c28d0ffc0..b2e1d659d0 100644
--- a/src/mainboard/google/kahlee/variants/careena/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/careena/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc
index 8deec06321..250ffcb4e2 100644
--- a/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/careena/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kahlee/variants/grunt/Makefile.inc b/src/mainboard/google/kahlee/variants/grunt/Makefile.inc
index ba3228d6c3..c93956bab3 100644
--- a/src/mainboard/google/kahlee/variants/grunt/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/grunt/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ../baseboard/spd
 
diff --git a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
index efa4066346..3fdd3e0b6b 100644
--- a/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/grunt/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/liara/Makefile.inc b/src/mainboard/google/kahlee/variants/liara/Makefile.inc
index ba3228d6c3..c93956bab3 100644
--- a/src/mainboard/google/kahlee/variants/liara/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/liara/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ../baseboard/spd
 
diff --git a/src/mainboard/google/kahlee/variants/liara/devicetree.cb b/src/mainboard/google/kahlee/variants/liara/devicetree.cb
index 0983f7955e..133cc977ba 100644
--- a/src/mainboard/google/kahlee/variants/liara/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/liara/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc b/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc
index 89458dec87..33fb542079 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/nuwani/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ./spd
 
diff --git a/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb b/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb
index efe92f723e..cb27f75b58 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/nuwani/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc
index 307b499b50..45487cbac1 100644
--- a/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/nuwani/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
 
diff --git a/src/mainboard/google/kahlee/variants/treeya/Makefile.inc b/src/mainboard/google/kahlee/variants/treeya/Makefile.inc
index 89458dec87..33fb542079 100644
--- a/src/mainboard/google/kahlee/variants/treeya/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/treeya/Makefile.inc
@@ -2,15 +2,7 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 subdirs-y += ./spd
 
diff --git a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
index efc384fea9..a4d44c54b8 100644
--- a/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
+++ b/src/mainboard/google/kahlee/variants/treeya/devicetree.cb
@@ -2,15 +2,8 @@
 # This file is part of the coreboot project.
 #
 #
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 chip soc/amd/stoneyridge
 	register "spd_addr_lookup" = "
 	{
diff --git a/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc b/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc
index 307b499b50..45487cbac1 100644
--- a/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc
+++ b/src/mainboard/google/kahlee/variants/treeya/spd/Makefile.inc
@@ -2,15 +2,7 @@
 ## This file is part of the coreboot project.
 ##
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation; version 2 of the License.
-##
-## This program is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
+## SPDX-License-Identifier: GPL-2.0-only
 
 LIB_SPD_DEPS = $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)