openwrt_lede/target/linux/rb532/base-files/lib/upgrade/platform.sh

REQUIRE_IMAGE_METADATA=1
RAMFS_COPY_BIN=/usr/sbin/nandwrite
CI_KERNPART=none

platform_check_image() {
	[ -e /dev/ubi0 ] || {
		ubiattach -m 1
		sleep 1
	}
	return 0;
}

platform_pre_upgrade() {
	nand_do_upgrade "$1"
}

platform_nand_pre_upgrade() {
	local board_name="$(cat /tmp/sysinfo/board_name)"

	mtd erase kernel
	tar xf "$1" sysupgrade-$board_name/kernel -O | nandwrite -o /dev/mtd0 -
}

platform_do_upgrade() {
	default_do_upgrade "$ARGV"
}