contrib/package: add experimental sysupgrade support for the atheros target

1 files changed, 32 insertions, 0 deletions

diff --git a/contrib/package/sysupgrade-atheros/files/lib/upgrade/platform.sh b/contrib/package/sysupgrade-atheros/files/lib/upgrade/platform.sh
new file mode 100644
index 0000000000..87a3248104
--- /dev/null
+++ b/contrib/package/sysupgrade-atheros/files/lib/upgrade/platform.sh
@@ -0,0 +1,32 @@
+platform_check_image() {
+	[ "$ARGC" -gt 1 ] && return 1
+
+	case "$(get_magic_word "$1")" in
+		# Freifunk .img files
+		4646) return 0;;
+		*)
+			echo "Invalid image. Use Freifunk .img files on this platform"
+			return 1
+		;;
+	esac
+}
+
+platform_do_upgrade() {
+	local kern_length=$((0x$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)/65536))
+	local kern_name=$(dd if="$1" bs=2 skip=5 count=8 2>/dev/null); kern_name="${kern_name%% *}"
+	local root_length=$((0x$(dd if="$1" bs=2 skip=13 count=4 2>/dev/null)/65536))
+	local root_name=$(dd if="$1" bs=2 skip=17 count=8 2>/dev/null); root_name="${root_name%% *}"
+
+	local append=""
+	[ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
+
+	if [ -n "$kern_name" -a -n "$root_name" ] && \
+	   [ ${kern_length:-0} -gt 0 -a ${root_length:-0} -gt ${kern_length:-0} ];
+	then
+		dd if="$1" bs=65536 skip=1 count=$kern_length 2>/dev/null | \
+			mtd -e $kern_name write - $kern_name
+
+		dd if="$1" bs=65536 skip=$((1+$kern_length)) count=$root_length 2>/dev/null | \
+			mtd -e $root_name $append write - $root_name
+	fi
+}