[Buildroot] [git commit] board/raspberrypi: handle dtb overlays for all variants

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=6021f3678b44d43da7057e3135da842cde1ffa05
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master

Most rpi defconfigs use dtb overlays, but not rpi0 / rpi2 - Making it harder
to use overlays on those boards as the genimage files have to be tweaked.

To fix this, create the rpi-firmware/overlays directory in the post-build
script if needed and unconditionally include it in the genimage files so
rpi0/rpi2 works consistently with the other variants.

Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 board/raspberrypi/genimage-raspberrypi0.cfg | 1 +
 board/raspberrypi/genimage-raspberrypi2.cfg | 1 +
 board/raspberrypi/post-build.sh             | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/board/raspberrypi/genimage-raspberrypi0.cfg b/board/raspberrypi/genimage-raspberrypi0.cfg
index 1fa3f5096f..313f85f651 100644
--- a/board/raspberrypi/genimage-raspberrypi0.cfg
+++ b/board/raspberrypi/genimage-raspberrypi0.cfg
@@ -7,6 +7,7 @@ image boot.vfat {
 			"rpi-firmware/config.txt",
 			"rpi-firmware/fixup.dat",
 			"rpi-firmware/start.elf",
+			"rpi-firmware/overlays",
 			"zImage"
 		}
 	}
diff --git a/board/raspberrypi/genimage-raspberrypi2.cfg b/board/raspberrypi/genimage-raspberrypi2.cfg
index acd23e7ca8..dad9275537 100644
--- a/board/raspberrypi/genimage-raspberrypi2.cfg
+++ b/board/raspberrypi/genimage-raspberrypi2.cfg
@@ -7,6 +7,7 @@ image boot.vfat {
 			"rpi-firmware/config.txt",
 			"rpi-firmware/fixup.dat",
 			"rpi-firmware/start.elf",
+			"rpi-firmware/overlays",
 			"zImage"
 		}
 	}
diff --git a/board/raspberrypi/post-build.sh b/board/raspberrypi/post-build.sh
index 5e5eb71100..b24256fcea 100755
--- a/board/raspberrypi/post-build.sh
+++ b/board/raspberrypi/post-build.sh
@@ -9,3 +9,6 @@ if [ -e ${TARGET_DIR}/etc/inittab ]; then
 	sed -i '/GENERIC_SERIAL/a\
 tty1::respawn:/sbin/getty -L  tty1 0 vt100 # HDMI console' ${TARGET_DIR}/etc/inittab
 fi
+
+# exnsure overlays exists for genimage
+mkdir -p "${BINARIES_DIR}/rpi-firmware/overlays"