+SQUASHFS_BLOCKSIZE := 256k
+SQUASHFSOPT := -b $(SQUASHFS_BLOCKSIZE)
+SQUASHFSOPT += -p '/dev d 755 0 0' -p '/dev/console c 600 0 0 5 1'
+SQUASHFSCOMP := gzip
+LZMA_XZ_OPTIONS := -Xpreset 9 -Xe -Xlc 0 -Xlp 2 -Xpb 2
+ifeq ($(CONFIG_SQUASHFS_LZMA),y)
+ SQUASHFSCOMP := lzma $(LZMA_XZ_OPTIONS)
+endif
+ifeq ($(CONFIG_SQUASHFS_XZ),y)
+ ifneq ($(filter arm x86 powerpc sparc,$(LINUX_KARCH)),)
+ BCJ_FILTER:=-Xbcj $(LINUX_KARCH)
+ endif
+ SQUASHFSCOMP := xz $(LZMA_XZ_OPTIONS) $(BCJ_FILTER)
+endif
+
+JFFS2_BLOCKSIZE ?= 64k 128k
+
+define add_jffs2_mark
+ echo -ne '\xde\xad\xc0\xde' >> $(1)
+endef
+
+define toupper
+$(shell echo $(1) | tr '[:lower:]' '[:upper:]')
+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 $(1) 4 8 16 64 128 256
+endef
+
+ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),)
+ define Image/BuildKernel/Initramfs
+ cp $(KDIR)/vmlinux-initramfs.elf $(BIN_DIR)/$(IMG_PREFIX)-vmlinux-initramfs.elf
+ $(call Image/Build/Initramfs)
+ endef
+else
+ define Image/BuildKernel/Initramfs
+ endef
+endif
+
+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
+ # FIXME: removing this line will cause strange behaviour in the foreach loop below
+ $(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 '/^.+$$$$/'
+ $(STAGING_DIR_HOST)/bin/mkfs.jffs2 $(3) -e $(patsubst %k,%KiB,$(1)) -o $(KDIR)/root.jffs2-$(2)-raw -d $(TARGET_DIR) -v 2>&1 1>/dev/null | awk '/^.+$$$$/'
+ $(call add_jffs2_mark,$(KDIR)/root.jffs2-$(2))
+ $(call Image/Build,jffs2-$(2))
+endef
+
+ifneq ($(CONFIG_TARGET_ROOTFS_JFFS2),)