diff --git a/include/image-commands.mk b/include/image-commands.mk
index 25a9dc84c8..63e823594e 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -7,93 +7,54 @@ define rootfs_align
 $(patsubst %-256k,0x40000,$(patsubst %-128k,0x20000,$(patsubst %-64k,0x10000,$(patsubst squashfs%,0x4,$(patsubst root.%,%,$(1))))))
 endef
 
-define Build/uImage
-	mkimage -A $(LINUX_KARCH) \
-		-O linux -T kernel \
-		-C $(1) -a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
-		-n '$(if $(UIMAGE_NAME),$(UIMAGE_NAME),$(call toupper,$(LINUX_KARCH)) $(VERSION_DIST) Linux-$(LINUX_VERSION))' -d $@ $@.new
-	mv $@.new $@
-endef
 
-define Build/buffalo-enc
-	$(eval product=$(word 1,$(1)))
-	$(eval version=$(word 2,$(1)))
-	$(eval args=$(wordlist 3,$(words $(1)),$(1)))
-	$(STAGING_DIR_HOST)/bin/buffalo-enc \
-		-p $(product) -v $(version) $(args) \
-		-i $@ -o $@.new
-	mv $@.new $@
-endef
-
-define Build/buffalo-enc-tag
-	$(call Build/buffalo-enc,'' '' -S 152 $(1))
-endef
-
-define Build/buffalo-tag-dhp
-	$(eval product=$(word 1,$(1)))
-	$(eval region=$(word 2,$(1)))
-	$(eval language=$(word 3,$(1)))
-	$(STAGING_DIR_HOST)/bin/buffalo-tag \
-		-d 0x01000000 -w 1 \
-		-a $(BUFFALO_TAG_PLATFORM) \
-		-v $(BUFFALO_TAG_VERSION) -m $(BUFFALO_TAG_MINOR) \
-		-b $(product) -p $(product) \
-		-r $(region) -r $(region) -l $(language) \
-		-I $@ -o $@.new
-	mv $@.new $@
-endef
-
-define Build/buffalo-dhp-image
-	$(STAGING_DIR_HOST)/bin/mkdhpimg $@ $@.new
-	mv $@.new $@
+define Build/append-dtb
+	cat $(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb >> $@
 endef
 
-define Build/eva-image
-	$(STAGING_DIR_HOST)/bin/lzma2eva $(KERNEL_LOADADDR) $(KERNEL_LOADADDR) $@ $@.new
-	mv $@.new $@
+define Build/append-kernel
+	dd if=$(IMAGE_KERNEL) >> $@
 endef
 
-define Build/seama
-	$(STAGING_DIR_HOST)/bin/seama -i $@ \
-		-m "dev=/dev/mtdblock/$(SEAMA_MTDBLOCK)" -m "type=firmware"
-	mv $@.seama $@
-endef
+compat_version=$(if $(DEVICE_COMPAT_VERSION),$(DEVICE_COMPAT_VERSION),1.0)
+json_quote=$(subst ','\'',$(subst ",\",$(1)))
+#")')
 
-define Build/seama-seal
-	$(STAGING_DIR_HOST)/bin/seama -i $@ -s $@.seama \
-		-m "signature=$(SEAMA_SIGNATURE)"
-	mv $@.seama $@
-endef
+legacy_supported_message=$(SUPPORTED_DEVICES) - Image version mismatch: image $(compat_version), \
+	device 1.0. Please wipe config during upgrade (force required) or reinstall. \
+	$(if $(DEVICE_COMPAT_MESSAGE),Reason: $(DEVICE_COMPAT_MESSAGE),Please check documentation ...)
 
-define Build/zyxel-ras-image
-	let \
-		newsize="$(subst k,* 1024,$(RAS_ROOTFS_SIZE))"; \
-		$(STAGING_DIR_HOST)/bin/mkrasimage \
-			-b $(RAS_BOARD) \
-			-v $(RAS_VERSION) \
-			-r $@ \
-			-s $$newsize \
-			-o $@.new \
-			$(if $(findstring separate-kernel,$(word 1,$(1))),-k $(IMAGE_KERNEL)) \
-		&& mv $@.new $@
-endef
+metadata_devices=$(if $(1),$(subst "$(space)","$(comma)",$(strip $(foreach v,$(1),"$(call json_quote,$(v))"))))
+metadata_json = \
+	'{ $(if $(IMAGE_METADATA),$(IMAGE_METADATA)$(comma)) \
+		"metadata_version": "1.1", \
+		"compat_version": "$(call json_quote,$(compat_version))", \
+		$(if $(DEVICE_COMPAT_MESSAGE),"compat_message": "$(call json_quote,$(DEVICE_COMPAT_MESSAGE))"$(comma)) \
+		$(if $(filter-out 1.0,$(compat_version)),"new_supported_devices": \
+			[$(call metadata_devices,$(SUPPORTED_DEVICES))]$(comma) \
+			"supported_devices": ["$(call json_quote,$(legacy_supported_message))"]$(comma)) \
+		$(if $(filter 1.0,$(compat_version)),"supported_devices":[$(call metadata_devices,$(SUPPORTED_DEVICES))]$(comma)) \
+		"version": { \
+			"dist": "$(call json_quote,$(VERSION_DIST))", \
+			"version": "$(call json_quote,$(VERSION_NUMBER))", \
+			"revision": "$(call json_quote,$(REVISION))", \
+			"target": "$(call json_quote,$(TARGETID))", \
+			"board": "$(call json_quote,$(if $(BOARD_NAME),$(BOARD_NAME),$(DEVICE_NAME)))" \
+		} \
+	}'
 
-define Build/netgear-chk
-	$(STAGING_DIR_HOST)/bin/mkchkimg \
-		-o $@.new \
-		-k $@ \
-		-b $(NETGEAR_BOARD_ID) \
-		$(if $(NETGEAR_REGION),-r $(NETGEAR_REGION),)
-	mv $@.new $@
+define Build/append-metadata
+	$(if $(SUPPORTED_DEVICES),-echo $(call metadata_json) | fwtool -I - $@)
+	[ ! -s "$(BUILD_KEY)" -o ! -s "$(BUILD_KEY).ucert" -o ! -s "$@" ] || { \
+		cp "$(BUILD_KEY).ucert" "$@.ucert" ;\
+		usign -S -m "$@" -s "$(BUILD_KEY)" -x "$@.sig" ;\
+		ucert -A -c "$@.ucert" -x "$@.sig" ;\
+		fwtool -S "$@.ucert" "$@" ;\
+	}
 endef
 
-define Build/netgear-dni
-	$(STAGING_DIR_HOST)/bin/mkdniimg \
-		-B $(NETGEAR_BOARD_ID) -v $(VERSION_DIST).$(firstword $(subst -, ,$(REVISION))) \
-		$(if $(NETGEAR_HW_ID),-H $(NETGEAR_HW_ID)) \
-		-r "$(1)" \
-		-i $@ -o $@.new
-	mv $@.new $@
+define Build/append-rootfs
+	dd if=$(IMAGE_ROOTFS) >> $@
 endef
 
 define Build/append-squashfs-fakeroot-be
@@ -110,6 +71,25 @@ define Build/append-string
 	echo -n $(1) >> $@
 endef
 
+define Build/append-ubi
+	sh $(TOPDIR)/scripts/ubinize-image.sh \
+		$(if $(UBOOTENV_IN_UBI),--uboot-env) \
+		$(if $(KERNEL_IN_UBI),--kernel $(IMAGE_KERNEL)) \
+		$(foreach part,$(UBINIZE_PARTS),--part $(part)) \
+		$(IMAGE_ROOTFS) \
+		$@.tmp \
+		-p $(BLOCKSIZE:%k=%KiB) -m $(PAGESIZE) \
+		$(if $(SUBPAGESIZE),-s $(SUBPAGESIZE)) \
+		$(if $(VID_HDR_OFFSET),-O $(VID_HDR_OFFSET)) \
+		$(UBINIZE_OPTS)
+	cat $@.tmp >> $@
+	rm $@.tmp
+endef
+
+define Build/append-uboot
+	dd if=$(UBOOT_PATH) >> $@
+endef
+
 # append a fake/empty uImage header, to fool bootloaders rootfs integrity check
 # for example
 define Build/append-uImage-fakehdr
@@ -126,31 +106,51 @@ define Build/append-uImage-fakehdr
 	cat $@.fakehdr >> $@
 endef
 
-define Build/tplink-safeloader
-	-$(STAGING_DIR_HOST)/bin/tplink-safeloader \
-		-B $(TPLINK_BOARD_ID) \
-		-V $(REVISION) \
-		-k $(IMAGE_KERNEL) \
-		-r $@ \
-		-o $@.new \
-		-j \
-		$(wordlist 2,$(words $(1)),$(1)) \
-		$(if $(findstring sysupgrade,$(word 1,$(1))),-S) && mv $@.new $@ || rm -f $@
+define Build/buffalo-dhp-image
+	$(STAGING_DIR_HOST)/bin/mkdhpimg $@ $@.new
+	mv $@.new $@
 endef
 
-define Build/append-dtb
-	cat $(KDIR)/image-$(firstword $(DEVICE_DTS)).dtb >> $@
+define Build/buffalo-enc
+	$(eval product=$(word 1,$(1)))
+	$(eval version=$(word 2,$(1)))
+	$(eval args=$(wordlist 3,$(words $(1)),$(1)))
+	$(STAGING_DIR_HOST)/bin/buffalo-enc \
+		-p $(product) -v $(version) $(args) \
+		-i $@ -o $@.new
+	mv $@.new $@
 endef
 
-define Build/install-dtb
-	$(call locked, \
-		$(foreach dts,$(DEVICE_DTS), \
-			$(CP) \
-				$(DTS_DIR)/$(dts).dtb \
-				$(BIN_DIR)/$(IMG_PREFIX)-$(dts).dtb; \
-		), \
-		install-dtb-$(IMG_PREFIX) \
-	)
+define Build/buffalo-enc-tag
+	$(call Build/buffalo-enc,'' '' -S 152 $(1))
+endef
+
+define Build/buffalo-tag-dhp
+	$(eval product=$(word 1,$(1)))
+	$(eval region=$(word 2,$(1)))
+	$(eval language=$(word 3,$(1)))
+	$(STAGING_DIR_HOST)/bin/buffalo-tag \
+		-d 0x01000000 -w 1 \
+		-a $(BUFFALO_TAG_PLATFORM) \
+		-v $(BUFFALO_TAG_VERSION) -m $(BUFFALO_TAG_MINOR) \
+		-b $(product) -p $(product) \
+		-r $(region) -r $(region) -l $(language) \
+		-I $@ -o $@.new
+	mv $@.new $@
+endef
+
+define Build/check-size
+	@imagesize="$$(stat -c%s $@)"; \
+	limitsize="$$(($(subst k,* 1024,$(subst m, * 1024k,$(if $(1),$(1),$(IMAGE_SIZE))))))"; \
+	[ $$limitsize -ge $$imagesize ] || { \
+		echo "WARNING: Image file $@ is too big: $$imagesize > $$limitsize" >&2; \
+		rm -f $@; \
+	}
+endef
+
+define Build/eva-image
+	$(STAGING_DIR_HOST)/bin/lzma2eva $(KERNEL_LOADADDR) $(KERNEL_LOADADDR) $@ $@.new
+	mv $@.new $@
 endef
 
 define Build/fit
@@ -165,28 +165,20 @@ define Build/fit
 	@mv $@.new $@
 endef
 
-define Build/lzma
-	$(call Build/lzma-no-dict,-lc1 -lp2 -pb2 $(1))
-endef
-
-define Build/lzma-no-dict
-	$(STAGING_DIR_HOST)/bin/lzma e $@ $(1) $@.new
-	@mv $@.new $@
-endef
-
 define Build/gzip
 	gzip -f -9n -c $@ $(1) > $@.new
 	@mv $@.new $@
 endef
 
-define Build/zip
-	mkdir $@.tmp
-	mv $@ $@.tmp/$(1)
-
-	zip -j -X \
-		$(if $(SOURCE_DATE_EPOCH),--mtime="$(SOURCE_DATE_EPOCH)") \
-		$@ $@.tmp/$(if $(1),$(1),$@)
-	rm -rf $@.tmp
+define Build/install-dtb
+	$(call locked, \
+		$(foreach dts,$(DEVICE_DTS), \
+			$(CP) \
+				$(DTS_DIR)/$(dts).dtb \
+				$(BIN_DIR)/$(IMG_PREFIX)-$(dts).dtb; \
+		), \
+		install-dtb-$(IMG_PREFIX) \
+	)
 endef
 
 define Build/jffs2
@@ -204,55 +196,67 @@ define Build/jffs2
 	@mv $@.new $@
 endef
 
+define Build/kernel2minor
+	kernel2minor -k $@ -r $@.new $(1)
+	mv $@.new $@
+endef
+
 define Build/kernel-bin
 	rm -f $@
 	cp $< $@
 endef
 
-define Build/patch-cmdline
-	$(STAGING_DIR_HOST)/bin/patch-cmdline $@ '$(CMDLINE)'
+define Build/linksys-image
+	$(TOPDIR)/scripts/linksys-image.sh \
+		"$(call param_get_default,type,$(1),$(DEVICE_NAME))" \
+		$@ $@.new
+		mv $@.new $@
 endef
 
-define Build/append-kernel
-	dd if=$(IMAGE_KERNEL) >> $@
+define Build/lzma
+	$(call Build/lzma-no-dict,-lc1 -lp2 -pb2 $(1))
 endef
 
-define Build/append-rootfs
-	dd if=$(IMAGE_ROOTFS) >> $@
+define Build/lzma-no-dict
+	$(STAGING_DIR_HOST)/bin/lzma e $@ $(1) $@.new
+	@mv $@.new $@
 endef
 
-define Build/append-ubi
-	sh $(TOPDIR)/scripts/ubinize-image.sh \
-		$(if $(UBOOTENV_IN_UBI),--uboot-env) \
-		$(if $(KERNEL_IN_UBI),--kernel $(IMAGE_KERNEL)) \
-		$(foreach part,$(UBINIZE_PARTS),--part $(part)) \
-		$(IMAGE_ROOTFS) \
-		$@.tmp \
-		-p $(BLOCKSIZE:%k=%KiB) -m $(PAGESIZE) \
-		$(if $(SUBPAGESIZE),-s $(SUBPAGESIZE)) \
-		$(if $(VID_HDR_OFFSET),-O $(VID_HDR_OFFSET)) \
-		$(UBINIZE_OPTS)
-	cat $@.tmp >> $@
-	rm $@.tmp
+define Build/netgear-chk
+	$(STAGING_DIR_HOST)/bin/mkchkimg \
+		-o $@.new \
+		-k $@ \
+		-b $(NETGEAR_BOARD_ID) \
+		$(if $(NETGEAR_REGION),-r $(NETGEAR_REGION),)
+	mv $@.new $@
 endef
 
-define Build/append-uboot
-	dd if=$(UBOOT_PATH) >> $@
+define Build/netgear-dni
+	$(STAGING_DIR_HOST)/bin/mkdniimg \
+		-B $(NETGEAR_BOARD_ID) -v $(VERSION_DIST).$(firstword $(subst -, ,$(REVISION))) \
+		$(if $(NETGEAR_HW_ID),-H $(NETGEAR_HW_ID)) \
+		-r "$(1)" \
+		-i $@ -o $@.new
+	mv $@.new $@
 endef
 
-define Build/pad-to
-	$(call Image/pad-to,$@,$(1))
+define Build/openmesh-image
+	$(TOPDIR)/scripts/om-fwupgradecfg-gen.sh \
+		"$(call param_get_default,ce_type,$(1),$(DEVICE_NAME))" \
+		"$@-fwupgrade.cfg" \
+		"$(call param_get_default,kernel,$(1),$(IMAGE_KERNEL))" \
+		"$(call param_get_default,rootfs,$(1),$@)"
+	$(TOPDIR)/scripts/combined-ext-image.sh \
+		"$(call param_get_default,ce_type,$(1),$(DEVICE_NAME))" "$@" \
+		"$@-fwupgrade.cfg" "fwupgrade.cfg" \
+		"$(call param_get_default,kernel,$(1),$(IMAGE_KERNEL))" "kernel" \
+		"$(call param_get_default,rootfs,$(1),$@)" "rootfs"
 endef
 
 define Build/pad-extra
 	dd if=/dev/zero bs=$(1) count=1 >> $@
 endef
 
-define Build/pad-rootfs
-	$(STAGING_DIR_HOST)/bin/padjffs2 $@ $(1) \
-		$(if $(BLOCKSIZE),$(BLOCKSIZE:%k=%),4 8 16 64 128 256)
-endef
-
 define Build/pad-offset
 	let \
 		size="$$(stat -c%s $@)" \
@@ -264,38 +268,24 @@ define Build/pad-offset
 	mv $@.new $@
 endef
 
-define Build/xor-image
-	$(STAGING_DIR_HOST)/bin/xorimage -i $@ -o $@.xor $(1)
-	mv $@.xor $@
+define Build/pad-rootfs
+	$(STAGING_DIR_HOST)/bin/padjffs2 $@ $(1) \
+		$(if $(BLOCKSIZE),$(BLOCKSIZE:%k=%),4 8 16 64 128 256)
 endef
 
-define Build/check-size
-	@imagesize="$$(stat -c%s $@)"; \
-	limitsize="$$(($(subst k,* 1024,$(subst m, * 1024k,$(if $(1),$(1),$(IMAGE_SIZE))))))"; \
-	[ $$limitsize -ge $$imagesize ] || { \
-		echo "WARNING: Image file $@ is too big: $$imagesize > $$limitsize" >&2; \
-		rm -f $@; \
-	}
+define Build/pad-to
+	$(call Image/pad-to,$@,$(1))
 endef
 
-define Build/linksys-image
-	$(TOPDIR)/scripts/linksys-image.sh \
-		"$(call param_get_default,type,$(1),$(DEVICE_NAME))" \
-		$@ $@.new
-		mv $@.new $@
+define Build/patch-cmdline
+	$(STAGING_DIR_HOST)/bin/patch-cmdline $@ '$(CMDLINE)'
 endef
 
-define Build/openmesh-image
-	$(TOPDIR)/scripts/om-fwupgradecfg-gen.sh \
-		"$(call param_get_default,ce_type,$(1),$(DEVICE_NAME))" \
-		"$@-fwupgrade.cfg" \
-		"$(call param_get_default,kernel,$(1),$(IMAGE_KERNEL))" \
-		"$(call param_get_default,rootfs,$(1),$@)"
-	$(TOPDIR)/scripts/combined-ext-image.sh \
-		"$(call param_get_default,ce_type,$(1),$(DEVICE_NAME))" "$@" \
-		"$@-fwupgrade.cfg" "fwupgrade.cfg" \
-		"$(call param_get_default,kernel,$(1),$(IMAGE_KERNEL))" "kernel" \
-		"$(call param_get_default,rootfs,$(1),$@)" "rootfs"
+# Convert a raw image into a $1 type image.
+# E.g. | qemu-image vdi
+define Build/qemu-image
+	qemu-img convert -f raw -O $1 $@ $@.new
+	@mv $@.new $@
 endef
 
 define Build/qsdk-ipq-factory-nand
@@ -312,6 +302,18 @@ define Build/qsdk-ipq-factory-nor
 	@mv $@.new $@
 endef
 
+define Build/seama
+	$(STAGING_DIR_HOST)/bin/seama -i $@ \
+		-m "dev=/dev/mtdblock/$(SEAMA_MTDBLOCK)" -m "type=firmware"
+	mv $@.seama $@
+endef
+
+define Build/seama-seal
+	$(STAGING_DIR_HOST)/bin/seama -i $@ -s $@.seama \
+		-m "signature=$(SEAMA_SIGNATURE)"
+	mv $@.seama $@
+endef
+
 define Build/senao-header
 	$(STAGING_DIR_HOST)/bin/mksenaofw $(1) -e $@ -o $@.new
 	mv $@.new $@
@@ -325,6 +327,18 @@ define Build/sysupgrade-tar
 		$@
 endef
 
+define Build/tplink-safeloader
+	-$(STAGING_DIR_HOST)/bin/tplink-safeloader \
+		-B $(TPLINK_BOARD_ID) \
+		-V $(REVISION) \
+		-k $(IMAGE_KERNEL) \
+		-r $@ \
+		-o $@.new \
+		-j \
+		$(wordlist 2,$(words $(1)),$(1)) \
+		$(if $(findstring sysupgrade,$(word 1,$(1))),-S) && mv $@.new $@ || rm -f $@
+endef
+
 define Build/tplink-v1-header
 	$(STAGING_DIR_HOST)/bin/mktplinkfw \
 		-c -H $(TPLINK_HWID) -W $(TPLINK_HWREV) -L $(KERNEL_LOADADDR) \
@@ -372,51 +386,38 @@ define Build/tplink-v2-image
 	rm -rf $@.new
 endef
 
-compat_version=$(if $(DEVICE_COMPAT_VERSION),$(DEVICE_COMPAT_VERSION),1.0)
-json_quote=$(subst ','\'',$(subst ",\",$(1)))
-#")')
-
-legacy_supported_message=$(SUPPORTED_DEVICES) - Image version mismatch: image $(compat_version), \
-	device 1.0. Please wipe config during upgrade (force required) or reinstall. \
-	$(if $(DEVICE_COMPAT_MESSAGE),Reason: $(DEVICE_COMPAT_MESSAGE),Please check documentation ...)
-
-metadata_devices=$(if $(1),$(subst "$(space)","$(comma)",$(strip $(foreach v,$(1),"$(call json_quote,$(v))"))))
-metadata_json = \
-	'{ $(if $(IMAGE_METADATA),$(IMAGE_METADATA)$(comma)) \
-		"metadata_version": "1.1", \
-		"compat_version": "$(call json_quote,$(compat_version))", \
-		$(if $(DEVICE_COMPAT_MESSAGE),"compat_message": "$(call json_quote,$(DEVICE_COMPAT_MESSAGE))"$(comma)) \
-		$(if $(filter-out 1.0,$(compat_version)),"new_supported_devices": \
-			[$(call metadata_devices,$(SUPPORTED_DEVICES))]$(comma) \
-			"supported_devices": ["$(call json_quote,$(legacy_supported_message))"]$(comma)) \
-		$(if $(filter 1.0,$(compat_version)),"supported_devices":[$(call metadata_devices,$(SUPPORTED_DEVICES))]$(comma)) \
-		"version": { \
-			"dist": "$(call json_quote,$(VERSION_DIST))", \
-			"version": "$(call json_quote,$(VERSION_NUMBER))", \
-			"revision": "$(call json_quote,$(REVISION))", \
-			"target": "$(call json_quote,$(TARGETID))", \
-			"board": "$(call json_quote,$(if $(BOARD_NAME),$(BOARD_NAME),$(DEVICE_NAME)))" \
-		} \
-	}'
+define Build/uImage
+	mkimage -A $(LINUX_KARCH) \
+		-O linux -T kernel \
+		-C $(1) -a $(KERNEL_LOADADDR) -e $(if $(KERNEL_ENTRY),$(KERNEL_ENTRY),$(KERNEL_LOADADDR)) \
+		-n '$(if $(UIMAGE_NAME),$(UIMAGE_NAME),$(call toupper,$(LINUX_KARCH)) $(VERSION_DIST) Linux-$(LINUX_VERSION))' -d $@ $@.new
+	mv $@.new $@
+endef
 
-define Build/append-metadata
-	$(if $(SUPPORTED_DEVICES),-echo $(call metadata_json) | fwtool -I - $@)
-	[ ! -s "$(BUILD_KEY)" -o ! -s "$(BUILD_KEY).ucert" -o ! -s "$@" ] || { \
-		cp "$(BUILD_KEY).ucert" "$@.ucert" ;\
-		usign -S -m "$@" -s "$(BUILD_KEY)" -x "$@.sig" ;\
-		ucert -A -c "$@.ucert" -x "$@.sig" ;\
-		fwtool -S "$@.ucert" "$@" ;\
-	}
+define Build/xor-image
+	$(STAGING_DIR_HOST)/bin/xorimage -i $@ -o $@.xor $(1)
+	mv $@.xor $@
 endef
 
-define Build/kernel2minor
-	kernel2minor -k $@ -r $@.new $(1)
-	mv $@.new $@
+define Build/zip
+	mkdir $@.tmp
+	mv $@ $@.tmp/$(1)
+
+	zip -j -X \
+		$(if $(SOURCE_DATE_EPOCH),--mtime="$(SOURCE_DATE_EPOCH)") \
+		$@ $@.tmp/$(if $(1),$(1),$@)
+	rm -rf $@.tmp
 endef
 
-# Convert a raw image into a $1 type image.
-# E.g. | qemu-image vdi
-define Build/qemu-image
-	qemu-img convert -f raw -O $1 $@ $@.new
-	@mv $@.new $@
+define Build/zyxel-ras-image
+	let \
+		newsize="$(subst k,* 1024,$(RAS_ROOTFS_SIZE))"; \
+		$(STAGING_DIR_HOST)/bin/mkrasimage \
+			-b $(RAS_BOARD) \
+			-v $(RAS_VERSION) \
+			-r $@ \
+			-s $$newsize \
+			-o $@.new \
+			$(if $(findstring separate-kernel,$(word 1,$(1))),-k $(IMAGE_KERNEL)) \
+		&& mv $@.new $@
 endef
