scripts: ubinize-image.sh: support static volumes, make size optional

In order to support devices having TF-A FIP image or UBI-aware U-Boot
SPL we need to include a static volume for the bootloader.

Introduce support for adding additional static volumes by prefixing
the filename with ':', eg.

UBINIZE_PARTS := fip:=$(STAGING_DIR_IMAGE)/u-boot.fip

Also add support for rootfs-in-uImage.FIT setups which don't require a
rootfs partition and make the (3rd) size parameter in UBINIZE_PARTS
optional (see example above without declared size).

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

include/image-commands.mk

@@ -138,9 +138,11 @@ UBI_NAND_SIZE_LIMIT = $(IMAGE_SIZE) - ($(NAND_SIZE)*20/1024 + 4*$(BLOCKSIZE))
 define Build/append-ubi
 	sh $(TOPDIR)/scripts/ubinize-image.sh \
 		$(if $(UBOOTENV_IN_UBI),--uboot-env) \
-		$(if $(KERNEL_IN_UBI),--kernel $(IMAGE_KERNEL)) \
 		$(foreach part,$(UBINIZE_PARTS),--part $(part)) \
-		--rootfs $(IMAGE_ROOTFS) \
+		$(if $(findstring fit,$(1)), \
+		$(if $(KERNEL_IN_UBI),--part fit=$(IMAGE_KERNEL)), \
+		$(if $(KERNEL_IN_UBI),--kernel $(IMAGE_KERNEL)) \
+		--rootfs $(IMAGE_ROOTFS)) \
 		$@.tmp \
 		-p $(BLOCKSIZE:%k=%KiB) -m $(PAGESIZE) \
 		$(if $(SUBPAGESIZE),-s $(SUBPAGESIZE)) \

scripts/ubinize-image.sh

@@ -12,15 +12,16 @@ err=""
 ubinize_seq=""
 
 ubivol() {
-	volid=$1
+	local volid=$1
-	name=$2
+	local name=$2
-	image=$3
+	local image=$3
-	autoresize=$4
+	local autoresize=$4
-	size="$5"
+	local size="$5"
+	local voltype="${6:-dynamic}"
 	echo "[$name]"
 	echo "mode=ubi"
 	echo "vol_id=$volid"
-	echo "vol_type=dynamic"
+	echo "vol_type=$voltype"
 	echo "vol_name=$name"
 	if [ "$image" ]; then
 		echo "image=$image"
@@ -38,6 +39,7 @@ ubilayout() {
 	local rootsize=
 	local autoresize=
 	local rootfs_type="$( get_fs_type "$2" )"
+	local voltype
 
 	if [ "$1" = "ubootenv" ]; then
 		ubivol $vol_id ubootenv
@@ -49,16 +51,26 @@ ubilayout() {
 		name="${part%%=*}"
 		prev="$part"
 		part="${part#*=}"
+		voltype=dynamic
 		[ "$prev" = "$part" ] && part=
 
 		image="${part%%=*}"
+		if [ "${image:0:1}" = ":" ]; then
+			voltype=static
+			image="${image:1}"
+		fi
 		prev="$part"
 		part="${part#*=}"
 		[ "$prev" = "$part" ] && part=
 
 		size="$part"
+		if [ -z "$size" ]; then
+			size="$( round_up "$( stat -c%s "$image" )" 1024 )"
+		else
+			size="${size}MiB"
+		fi
 
-		ubivol $vol_id "$name" "$image" "" "${size}MiB"
+		ubivol $vol_id "$name" "$image" "" "${size}" "$voltype"
 		vol_id=$(( $vol_id + 1 ))
 	done
 	if [ "$3" ]; then
@@ -77,10 +89,10 @@ ubilayout() {
 			rootsize="$( round_up "$( stat -c%s "$2" )" 1024 )"
 			;;
 		esac
-		ubivol $vol_id rootfs "$2" "$autoresize" "$rootsize"
+		ubivol $vol_id rootfs "$2" "$autoresize" "$rootsize" dynamic
 
 		vol_id=$(( $vol_id + 1 ))
-		[ "$rootfs_type" = "ubifs" ] || ubivol $vol_id rootfs_data "" 1
+		[ "$rootfs_type" = "ubifs" ] || ubivol $vol_id rootfs_data "" 1 dymamic
 	fi
 }