openwrt/target/linux/brcm-2.4/base-files/lib/upgrade/platform.sh

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platform_check_image() {
[ "$ARGC" -gt 1 ] && return 1
case "$(get_magic_word "$1")" in
# .trx files
4844) return 0;;
# .bin files
5735) return 0;;
*)
echo "Invalid image type"
return 1
;;
esac
}
platform_do_upgrade() {
get_image "$1" > $(find_mtd_part "linux")
sync
}
brcm_prepare_mtd() {
[ "$SAVE_CONFIG" -eq 1 ] && return 0
}
append sysupgrade_pre_upgrade brcm_prepare_mtd