kbuild: Support directory names in DTB destinations

The kbuild.sh script strips the directory name from the DTB destination.
This is correct when no destination is specified explicitly, as we want
to strip the directory name of the source for arm64 platforms where DT
sources are stored in per-vendor directories. However, in some cases, we
want to store the DTB in a sub-directory. A common use case is Raspberry
Pi platforms that store overlays in an overlays/ subdirectory.

Make this possible by stripping the directory name only when the
destination is implicit.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/kbuild.sh b/kbuild.sh
index c548718..3f20151 100755
--- a/kbuild.sh
+++ b/kbuild.sh
@@ -316,8 +316,15 @@ copy_dtbs() {
 	for dtb in ${dtbs[@]} ; do
 		local src=${dtb/:*/}
 		local dst=${dtb/*:/}
-		dst=${dst/*\//}
 
+		# If a destination is explicitly specified, don't strip
+		# directory name. This can be used for instance to store .dtbo
+		# files in an overlays/ subdirectory.
+		if ! echo ${dtb} | grep -q ':' ; then
+			dst=$(basename $dst)
+		fi
+
+		mkdir -p $(dirname $dest_dir/$dst)
 		cp $output_dir/arch/${arch}/boot/dts/$src* $dest_dir/$dst
 	done
 }