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1c0e13db43
shellcheck recommends || and && over "-a" and "-o" because the latter are not well defined. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
65 lines
1.9 KiB
Bash
65 lines
1.9 KiB
Bash
#
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# Copyright (C) 2019 OpenWrt.org
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#
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. /lib/functions.sh
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iodata_mstc_prepare_fail() {
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echo "failed to check and prepare the environment, rebooting..."
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umount -a
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reboot -f
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}
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# I-O DATA devices manufactured by MSTC (MitraStar Technology Corp.)
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# have two important flags:
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# - bootnum: switch between two os images
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# use 1st image in OpenWrt
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# - debugflag: enable/disable debug
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# users can interrupt Z-Loader for recovering the device if enabled
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#
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# parameters:
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# - $1: the offset of "debugflag"
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iodata_mstc_upgrade_prepare() {
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local persist_mtd="$(find_mtd_part persist)"
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local factory_mtd="$(find_mtd_part factory)"
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local dflag_offset="$1"
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if [ -z "$dflag_offset" ]; then
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echo 'no debugflag offset provided'
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iodata_mstc_prepare_fail
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fi
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if [ -z "$persist_mtd" ] || [ -z "$factory_mtd" ]; then
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echo 'cannot find mtd partition(s), "factory" or "persist"'
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iodata_mstc_prepare_fail
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fi
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local bootnum=$(hexdump -s 4 -n 1 -e '"%x"' ${persist_mtd})
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local debugflag=$(hexdump -s $((dflag_offset)) -n 1 -e '"%x"' ${factory_mtd})
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if [ "$bootnum" != "1" ] && [ "$bootnum" != "2" ]; then
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echo "failed to get bootnum, please check the value at 0x4 in ${persist_mtd}"
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iodata_mstc_prepare_fail
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fi
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if [ "$debugflag" != "0" ] && [ "$debugflag" != "1" ]; then
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echo "failed to get debugflag, please check the value at ${dflag_offset} in ${factory_mtd}"
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iodata_mstc_prepare_fail
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fi
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echo "current: bootnum => ${bootnum}, debugflag => ${debugflag}"
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if [ "$bootnum" = "2" ]; then
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if ! (echo -ne "\x01" | dd bs=1 count=1 seek=4 conv=notrunc of=${persist_mtd} 2>/dev/null); then
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echo "failed to set bootnum"
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iodata_mstc_prepare_fail
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fi
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echo "### switch to 1st os-image on next boot ###"
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fi
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if [ "$debugflag" = "0" ]; then
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if ! (echo -ne "\x01" | dd bs=1 count=1 seek=$((dflag_offset)) conv=notrunc of=${factory_mtd} 2>/dev/null); then
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echo "failed to set debugflag"
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iodata_mstc_prepare_fail
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fi
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echo "### enable debug ###"
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fi
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}
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