1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/base-files/lib/upgrade/netgear.sh b/target/linux/ipq40xx/base-files/lib/upgrade/netgear.sh
new file mode 100644
index 0000000000..f3fb626d1f
--- /dev/null
+++ b/target/linux/ipq40xx/base-files/lib/upgrade/netgear.sh
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: GPL-2.0-only
+. /lib/functions.sh
+
+platform_do_upgrade_netgear_orbi_upgrade() {
+	command -v losetup >/dev/null || {
+		logger -s "Upgrade failed: 'losetup' not installed."
+		return 1
+	}
+
+	local tar_file=$1
+	local kernel=$2
+	local rootfs=$3
+
+	[ -z "$kernel" ] && kernel=$(find_mmc_part "kernel")
+	[ -z "$rootfs" ] && rootfs=$(find_mmc_part "rootfs")
+
+	[ -z "$kernel" ] && echo "Upgrade failed: kernel partition not found! Rebooting..." && reboot -f
+	[ -z "$rootfs" ] && echo "Upgrade failed: rootfs partition not found! Rebooting..." && reboot -f
+
+	netgear_orbi_do_flash $tar_file $kernel $rootfs
+
+	echo "sysupgrade successful"
+	umount -a
+	reboot -f
+}
+
+netgear_orbi_do_flash() {
+	local tar_file=$1
+	local kernel=$2
+	local rootfs=$3
+
+	# keep sure its unbound
+	losetup --detach-all || {
+		echo "Failed to detach all loop devices. Skip this try."
+		reboot -f
+	}
+
+	# use the first found directory in the tar archive
+	local board_dir=$(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
+	}
+
+	# Cleanup
+	losetup -d $loopdev >/dev/null 2>&1
+	sync
+}