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#
# 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
}
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