Initial commit

target/linux/ipq806x/base-files/lib/upgrade/zyxel.sh

@@ -0,0 +1,127 @@
+#
+# Copyright (C) 2016 lede-project.org
+#
+
+zyxel_get_rootfs() {
+	local rootfsdev
+
+	if read cmdline < /proc/cmdline; then
+		case "$cmdline" in
+			*root=*)
+				rootfsdev="${cmdline##*root=}"
+				rootfsdev="${rootfsdev%% *}"
+			;;
+		esac
+
+		echo "${rootfsdev}"
+	fi
+}
+
+zyxel_do_flash() {
+	local tar_file=$1
+	local kernel=$2
+	local rootfs=$3
+	local dualflagmtd=$4
+
+	# keep sure its unbound
+	losetup --detach-all || {
+		echo Failed to detach all loop devices. Skip this try.
+		reboot -f
+	}
+
+	# use the first found directory in the tar archive
+	local board_dir=$(tar tf $tar_file | grep -m 1 '^sysupgrade-.*/$')
+	board_dir=${board_dir%/}
+
+	echo "flashing kernel to $kernel"
+	tar xf $tar_file ${board_dir}/kernel -O >$kernel
+
+	echo "flashing rootfs to ${rootfs}"
+	tar xf $tar_file ${board_dir}/root -O >"${rootfs}"
+
+	# a padded rootfs is needed for overlay fs creation
+	local offset=$(tar xf $tar_file ${board_dir}/root -O | wc -c)
+	[ $offset -lt 65536 ] && {
+		echo Wrong size for rootfs: $offset
+		sleep 10
+		reboot -f
+	}
+
+	# Mount loop for rootfs_data
+	local loopdev="$(losetup -f)"
+	losetup -o $offset $loopdev $rootfs || {
+		echo "Failed to mount looped rootfs_data."
+		sleep 10
+		reboot -f
+	}
+
+	echo "Format new rootfs_data at position ${offset}."
+	mkfs.ext4 -F -L rootfs_data $loopdev
+	mkdir /tmp/new_root
+	mount -t ext4 $loopdev /tmp/new_root && {
+		echo "Saving config to rootfs_data at position ${offset}."
+		cp -v "$UPGRADE_BACKUP" "/tmp/new_root/$BACKUP_FILE"
+		umount /tmp/new_root
+	}
+
+	# flashing successful, toggle the dualflag
+	case "$rootfs" in
+		"/dev/mmcblk0p5")
+			printf "\xff" >$dualflagmtd
+			;;
+		"/dev/mmcblk0p8")
+			printf "\x01" >$dualflagmtd
+			;;
+	esac
+
+	# Cleanup
+	losetup -d $loopdev >/dev/null 2>&1
+	sync
+	umount -a
+	reboot -f
+}
+
+zyxel_do_upgrade() {
+	local tar_file="$1"
+	local board=$(board_name)
+	local rootfs="$(zyxel_get_rootfs)"
+	local kernel=
+
+	[ -b "${rootfs}" ] || return 1
+	case "$board" in
+	zyxel,nbg6817)
+		local dualflagmtd="$(find_mtd_part 0:dual_flag)"
+		# XXX: drop upper case after kernel v5.4 is gone (qcom-smem)
+		[ -b $dualflagmtd ] || \
+			dualflagmtd="$(find_mtd_part 0:DUAL_FLAG)"
+		[ -b $dualflagmtd ] || return 1
+
+		case "$rootfs" in
+			"/dev/mmcblk0p5")
+				# booted from the primary partition set
+				# write to the alternative set
+				kernel="/dev/mmcblk0p7"
+				rootfs="/dev/mmcblk0p8"
+			;;
+			"/dev/mmcblk0p8")
+				# booted from the alternative partition set
+				# write to the primary set
+				kernel="/dev/mmcblk0p4"
+				rootfs="/dev/mmcblk0p5"
+			;;
+			*)
+				return 1
+			;;
+		esac
+		;;
+	*)
+		return 1
+		;;
+	esac
+
+	zyxel_do_flash $tar_file $kernel $rootfs $dualflagmtd
+
+	nand_do_upgrade "$1"
+
+	return 0
+}