platform.sh

platform_check_image() {
	local image="$1"
	# shellcheck disable=SC2155
	local board_name="$(board_name)"

	# This needs to go before generic device compatibility check
	# because old IOWRT 6.x/7.0 images have differing model in their metadata
	__check_image_70_65_downgrade "$image" "$board_name" || return 1

	iopsys_check_image "$image" "$board_name" || return
	__check_image_emmc_gpt_support "$image" "$board_name" || return
}


__check_image_emmc_gpt_support() {
	local image=$1
	local board_name=$2
	local configuration="$(get_configuration "$image" "$board_name")" || return 1
	if [ "$(get_root_device_type)" = emmc ] && ! get_image_component_ref "$image" bootloader-emmc "$configuration" > /dev/null ; then
		log "ERROR: Can not downgrade to image with missing eMMC GPT support."
		return 1
	fi
	return 0
}

# These are images using old legacy Airoha SPI NAND driver
__check_image_70_65_downgrade() {
	local image=$1
	local board_name=$2
	# We treat no fitting config found and legacy config (i.e. no configs at all) the same here,
	# because it does not matter for the check for the squashfs image component, because
	# those images did not have configs to begin with
	# shellcheck disable=SC2155
	local configuration="$(get_configuration "$image" "$board_name")"
	if get_image_component_ref "$image" squashfs "$configuration"; then
		log "ERROR: Downgrading to a version older than 7.1.0ALPHA3 is not supported."
		return 1
	fi
	return 0
}

platform_do_upgrade() {
	local image="$1"
	iopsys_do_upgrade "$image" "$(board_name)" "$(platform_list_image_components "$image")"  || return
}

# Tell the bootloader to boot from flash "bank" $1 next time.
# $1: bank identifier (1 or 2)
platform_set_bootbank() {
	iopsys_set_bootbank "$1"
}

platform_get_bootbank() {
	iopsys_get_bootbank
}

platform_copy_config() {
	local image="$1"
	log "Copy config files"
	iopsys_copy_config "$image"
}

__get_bootloader_device() {
	local boot_dev="u-boot"
	case "$(get_root_device_type)" in
	emmc)
		boot_dev="/dev/bootloader"
		;;
	*)
		boot_dev=$(get_default_loader_device)
		;;
	esac

	echo "$boot_dev"
}

platform_list_image_components() {
	local image=$1
	local boot_dev

	boot_dev="$(__get_bootloader_device)"
	#		<type>			/configuration/<name>	<required>	<target device>
	echo 	"pre_upgrade		upgrade_bundle		optional"
	echo	"image				boot				required	boot\${next_bank_id}"
	echo	"image				rootfs				optional	rootfs\${next_bank_id}"
if  bootloader_upgrade_enabled 2>/dev/null "$image" "bootloader" "$boot_dev" ; then
  case "$(get_root_device_type)" in
    emmc)
	echo	"bootloader			bootloader-emmc			optional	$boot_dev"
	;;
    *)
	echo	"bootloader			bootloader			optional	$boot_dev"
	;;
  esac
fi
	echo	"u_boot_env			u-boot-env			required"
	echo	"post_upgrade		upgrade_bundle		optional"
}