+ SQUASHFSCOMP := xz $(LZMA_XZ_OPTIONS) $(BCJ_FILTER)
+endif
+
+JFFS2_BLOCKSIZE ?= 64k 128k
+
+fs-types-$(CONFIG_TARGET_ROOTFS_SQUASHFS) += squashfs
+fs-types-$(CONFIG_TARGET_ROOTFS_JFFS2) += $(addprefix jffs2-,$(JFFS2_BLOCKSIZE))
+fs-types-$(CONFIG_TARGET_ROOTFS_JFFS2_NAND) += $(addprefix jffs2-nand-,$(NAND_BLOCKSIZE))
+fs-types-$(CONFIG_TARGET_ROOTFS_EXT4FS) += ext4
+fs-types-$(CONFIG_TARGET_ROOTFS_ISO) += iso
+fs-subtypes-$(CONFIG_TARGET_ROOTFS_JFFS2) += $(addsuffix -raw,$(addprefix jffs2-,$(JFFS2_BLOCKSIZE)))
+fs-subtypes-$(CONFIG_TARGET_ROOTFS_CPIOGZ) += cpiogz
+fs-subtypes-$(CONFIG_TARGET_ROOTFS_TARGZ) += targz
+
+TARGET_FILESYSTEMS := $(fs-types-y)
+
+FS_64K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-64k
+FS_128K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-128k
+FS_256K := $(filter-out jffs2-%,$(TARGET_FILESYSTEMS)) jffs2-256k
+
+define add_jffs2_mark
+ echo -ne '\xde\xad\xc0\xde' >> $(1)
+endef
+
+define toupper
+$(shell echo $(1) | tr '[:lower:]' '[:upper:]')
+endef
+
+define split_args
+$(foreach data, \
+ $(subst |,$(space),\
+ $(subst $(space),^,$(1))), \
+ $(call $(2),$(strip $(subst ^,$(space),$(data)))))
+endef
+
+define build_cmd
+$(if $(Build/$(word 1,$(1))),,$(error Missing Build/$(word 1,$(1))))
+$(call Build/$(word 1,$(1)),$(wordlist 2,$(words $(1)),$(1)))
+
+endef
+
+define concat_cmd
+$(call split_args,$(1),build_cmd)
+endef
+
+# pad to 4k, 8k, 16k, 64k, 128k, 256k and add jffs2 end-of-filesystem mark
+define prepare_generic_squashfs
+ $(STAGING_DIR_HOST)/bin/padjffs2 $(1) 4 8 16 64 128 256
+endef
+
+define Image/BuildKernel/Initramfs
+ $(call Image/Build/Initramfs)
+endef
+
+define Image/BuildKernel/MkuImage
+ mkimage -A $(ARCH) -O linux -T kernel -C $(1) -a $(2) -e $(3) \
+ -n '$(call toupper,$(ARCH)) OpenWrt Linux-$(LINUX_VERSION)' -d $(4) $(5)
+endef
+
+define Image/BuildKernel/MkFIT
+ $(TOPDIR)/scripts/mkits.sh \
+ -D $(1) -o $(KDIR)/fit-$(1).its -k $(2) -d $(3) -C $(4) -a $(5) -e $(6) \
+ -A $(ARCH) -v $(LINUX_VERSION)
+ PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/fit-$(1).its $(KDIR)/fit-$(1)$(7).itb
+endef
+
+define Image/mkfs/jffs2/sub
+ $(STAGING_DIR_HOST)/bin/mkfs.jffs2 $(3) --pad -e $(patsubst %k,%KiB,$(1)) -o $(KDIR)/root.jffs2-$(2) -d $(TARGET_DIR) -v 2>&1 1>/dev/null | awk '/^.+$$$$/'
+ $(call add_jffs2_mark,$(KDIR)/root.jffs2-$(2))
+endef
+
+define Image/mkfs/jffs2/sub-raw
+ $(STAGING_DIR_HOST)/bin/mkfs.jffs2 $(3) -e $(patsubst %k,%KiB,$(1)) -o $(KDIR)/root.jffs2-$(2)-raw -d $(TARGET_DIR) -v 2>&1 1>/dev/null | awk '/^.+$$$$/'
+endef
+
+define Image/mkfs/jffs2/template
+ Image/mkfs/jffs2-$(1) = $$(call Image/mkfs/jffs2/sub,$(1),$(1),$(JFFS2OPTS))
+ Image/mkfs/jffs2-$(1)-raw = $$(call Image/mkfs/jffs2/sub-raw,$(1),$(1),$(JFFS2OPTS))
+
+endef
+
+define Image/mkfs/jffs2-nand/template
+ Image/mkfs/jffs2-nand-$(1) = \
+ $$(call Image/mkfs/jffs2/sub, \
+ $(word 2,$(subst -, ,$(1))),nand-$(1), \
+ $(JFFS2OPTS) --no-cleanmarkers --pagesize=$(word 1,$(subst -, ,$(1))))
+
+endef
+
+$(eval $(foreach S,$(JFFS2_BLOCKSIZE),$(call Image/mkfs/jffs2/template,$(S))))
+$(eval $(foreach S,$(NAND_BLOCKSIZE),$(call Image/mkfs/jffs2-nand/template,$(S))))
+
+define Image/mkfs/squashfs
+ $(STAGING_DIR_HOST)/bin/mksquashfs4 $(TARGET_DIR) $(KDIR)/root.squashfs -nopad -noappend -root-owned -comp $(SQUASHFSCOMP) $(SQUASHFSOPT) -processors $(if $(CONFIG_PKG_BUILD_JOBS),$(CONFIG_PKG_BUILD_JOBS),1)
+endef
+
+# $(1): board name
+# $(2): rootfs type
+# $(3): kernel image
+ifneq ($(CONFIG_NAND_SUPPORT),)
+ define Image/Build/SysupgradeNAND
+ mkdir -p "$(KDIR_TMP)/sysupgrade-$(1)/"
+ echo "BOARD=$(1)" > "$(KDIR_TMP)/sysupgrade-$(1)/CONTROL"
+ [ -z "$(2)" ] || $(CP) "$(KDIR)/root.$(2)" "$(KDIR_TMP)/sysupgrade-$(1)/root"
+ [ -z "$(3)" ] || $(CP) "$(3)" "$(KDIR_TMP)/sysupgrade-$(1)/kernel"
+ (cd "$(KDIR_TMP)"; $(TAR) cvf \
+ "$(BIN_DIR)/$(IMG_PREFIX)-$(1)-$(2)-sysupgrade.tar" sysupgrade-$(1))
+ endef
+
+# $(1) board name
+# $(2) ubinize-image options (e.g. --uboot-env and/or --kernel kernelimage)
+# $(3) rootfstype (e.g. squashfs or ubifs)
+# $(4) options to pass-through to ubinize (i.e. $($(PROFILE)_UBI_OPTS)))
+ define Image/Build/UbinizeImage
+ sh $(TOPDIR)/scripts/ubinize-image.sh $(2) \
+ "$(KDIR)/root.$(3)" \
+ "$(KDIR)/$(IMG_PREFIX)-$(1)-$(3)-ubinized.bin" \
+ $(4)
+ endef
+
+endif
+
+ifneq ($(CONFIG_TARGET_ROOTFS_UBIFS),)
+ define Image/mkfs/ubifs/generate
+ $(CP) ./ubinize$(1).cfg $(KDIR)
+ ( cd $(KDIR); \
+ $(STAGING_DIR_HOST)/bin/ubinize \
+ $(if $($(PROFILE)_UBI_OPTS), \
+ $(shell echo $($(PROFILE)_UBI_OPTS)), \
+ $(shell echo $(UBI_OPTS)) \
+ ) \
+ -o $(KDIR)/root$(1).ubi \
+ ubinize$(1).cfg \
+ )