4 files changed, 8 insertions, 0 deletions
diff --git a/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc b/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc
index f0b34f9840..2099428db9 100644
--- a/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc
+++ b/src/mainboard/hp/compaq_8200_elite_sff/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-y += gpio.c
 romstage-y += gpio.c
 ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc b/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc
index 18391d8b18..fb492d3583 100644
--- a/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc
+++ b/src/mainboard/hp/compaq_elite_8300_usdt/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-y += early_init.c
 bootblock-y += gpio.c
 romstage-y += early_init.c
diff --git a/src/mainboard/hp/folio_9480m/Makefile.inc b/src/mainboard/hp/folio_9480m/Makefile.inc
index ebe01aea99..6f4727ab81 100644
--- a/src/mainboard/hp/folio_9480m/Makefile.inc
+++ b/src/mainboard/hp/folio_9480m/Makefile.inc
@@ -1,2 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 romstage-y += gpio.c
 ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
diff --git a/src/mainboard/hp/z220_series/Makefile.inc b/src/mainboard/hp/z220_series/Makefile.inc
index 00426a88b9..69ef08873b 100644
--- a/src/mainboard/hp/z220_series/Makefile.inc
+++ b/src/mainboard/hp/z220_series/Makefile.inc
@@ -1,3 +1,5 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
 bootblock-y += variants/$(VARIANT_DIR)/gpio.c
 romstage-y += variants/$(VARIANT_DIR)/gpio.c
 ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads