1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/mvebu/cortexa72/base-files/lib/upgrade/emmc-puzzle.sh b/target/linux/mvebu/cortexa72/base-files/lib/upgrade/emmc-puzzle.sh
new file mode 100755
index 0000000000..5e5c356ed6
--- /dev/null
+++ b/target/linux/mvebu/cortexa72/base-files/lib/upgrade/emmc-puzzle.sh
@@ -0,0 +1,36 @@
+platform_do_upgrade_emmc() {
+	local board=$(board_name)
+	local diskdev partdev
+
+	export_bootdevice && export_partdevice diskdev 0 || {
+		v "Unable to determine upgrade device"
+		return 1
+	}
+	sync
+	if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
+		get_partitions "/dev/$diskdev" bootdisk
+		v "Extract boot sector from the image"
+		get_image_dd "$1" of=/tmp/image.bs count=1 bs=512b
+		get_partitions /tmp/image.bs image
+	fi
+
+	#iterate over each partition from the image and write it to the boot disk
+	while read part start size; do
+		if export_partdevice partdev $part; then
+			if [ "$partdev" = "mmcblk0p2" ]; then
+				v "Writing image mmcblk0p3 for /dev/$partdev  $start $size"
+				get_image_dd "$1" of="/dev/mmcblk0p3" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
+			elif [ "$partdev" = "mmcblk0p1" ]; then
+				v "Writing image mmcblk0p1 for /dev/$partdev $start $size"
+				get_image_dd "$1" of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
+			fi
+		else
+			v "Unable to find partition $part device, skipped."
+		fi
+	done < /tmp/partmap.image
+
+	v "Writing new UUID to /dev/$diskdev..."
+	get_image_dd "$1" of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
+
+	sleep 1
+}