diff --git a/src/mainboard/google/gru/sdram_inf/gru-sdram-lpddr3-hynix-4GB.inc b/src/mainboard/google/gru/sdram_inf/gru-sdram-lpddr3-hynix-4GB.inc
index 3ed18959f3..41643f36b2 100644
--- a/src/mainboard/google/gru/sdram_inf/gru-sdram-lpddr3-hynix-4GB.inc
+++ b/src/mainboard/google/gru/sdram_inf/gru-sdram-lpddr3-hynix-4GB.inc
@@ -1,3 +1,16 @@
+/*
+ * 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.
+ */
+
 {
 	{
 		{
diff --git a/src/mainboard/google/gru/sdram_inf/kevin-sdram-lpddr3-hynix-4GB.inc b/src/mainboard/google/gru/sdram_inf/kevin-sdram-lpddr3-hynix-4GB.inc
index 12deb9ff87..31b45546c0 100644
--- a/src/mainboard/google/gru/sdram_inf/kevin-sdram-lpddr3-hynix-4GB.inc
+++ b/src/mainboard/google/gru/sdram_inf/kevin-sdram-lpddr3-hynix-4GB.inc
@@ -1,3 +1,15 @@
+/*
+ * 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.
+ */
 {
 	{
 		{