Initial commit

target/linux/ramips/mt7621/base-files/lib/upgrade/zyxel.sh

@@ -0,0 +1,39 @@
+#
+# Copyright (C) 2023 OpenWrt.org
+#
+
+. /lib/functions.sh
+
+zyxel_mstc_prepare_fail() {
+	echo "failed to check and prepare the environment, rebooting..."
+	umount -a
+	reboot -f
+}
+
+zyxel_mstc_upgrade_prepare() {
+	local persist_mtd="$(find_mtd_part persist)"
+	local firmware_mtd="$(find_mtd_part firmware)"
+
+	if [ -z "$persist_mtd" ] || [ -z "$firmware_mtd" ]; then
+		echo 'cannot find mtd partition(s) "persist" or "firmware"'
+		zyxel_mstc_prepare_fail
+	fi
+
+	local bootnum=$(hexdump -s 4 -n 1 -e '"%x"' ${persist_mtd})
+
+	if [ "$bootnum" != "1" ] && [ "$bootnum" != "2" ]; then
+		echo "failed to get bootnum, please check the value at 0x4 in ${persist_mtd}"
+		zyxel_mstc_prepare_fail
+	fi
+	echo "current: bootnum => ${bootnum}"
+
+	[ "$(fw_printenv -n bootmenu_delay)" = "3" ] || fw_setenv bootmenu_delay 3
+
+	if [ "$bootnum" = "2" ]; then
+		if ! ( echo -ne "\x01" | dd of=${persist_mtd} count=1 bs=1 seek=4 conv=notrunc 2>/dev/null ); then
+			echo "failed to set new boot partition"
+			zyxel_mstc_prepare_fail
+		fi
+		echo "### switch to 1st os-image on next boot ###"
+	fi
+}