openwrt/target/linux/ipq807x/base-files/lib/upgrade/platform.sh

PART_NAME=firmware
REQUIRE_IMAGE_METADATA=1

RAMFS_COPY_BIN='fw_printenv fw_setenv'
RAMFS_COPY_DATA='/etc/fw_env.config /var/lock/fw_printenv.lock'

xiaomi_initramfs_prepare() {
	# Wipe UBI if running initramfs
	[ "$(rootfs_type)" = "tmpfs" ] || return 0

	local rootfs_mtdnum="$( find_mtd_index rootfs )"
	if [ ! "$rootfs_mtdnum" ]; then
		echo "unable to find mtd partition rootfs"
		return 1
	fi

	local kern_mtdnum="$( find_mtd_index ubi_kernel )"
	if [ ! "$kern_mtdnum" ]; then
		echo "unable to find mtd partition ubi_kernel"
		return 1
	fi

	ubidetach -m "$rootfs_mtdnum"
	ubiformat /dev/mtd$rootfs_mtdnum -y

	ubidetach -m "$kern_mtdnum"
	ubiformat /dev/mtd$kern_mtdnum -y
}

platform_check_image() {
	return 0;
}

platform_pre_upgrade() {
	case "$(board_name)" in
	redmi,ax6|\
	xiaomi,ax3600)
		xiaomi_initramfs_prepare
		;;
	esac
}

platform_do_upgrade() {
	case "$(board_name)" in
	redmi,ax6|\
	xiaomi,ax3600)
		# Make sure that UART is enabled
		fw_setenv boot_wait on
		fw_setenv uart_en 1

		# Enforce single partition.
		fw_setenv flag_boot_rootfs 0
		fw_setenv flag_last_success 0
		fw_setenv flag_boot_success 1
		fw_setenv flag_try_sys1_failed 8
		fw_setenv flag_try_sys2_failed 8

		# Kernel and rootfs are placed in 2 different UBI
		CI_KERN_UBIPART="ubi_kernel"
		CI_ROOT_UBIPART="rootfs"
		nand_do_upgrade "$1"
		;;
	*)
		default_do_upgrade "$1"
		;;
	esac
}