+override TARGET_BUILD=
+include $(INCLUDE_DIR)/prereq.mk
+include $(INCLUDE_DIR)/kernel.mk
+include $(INCLUDE_DIR)/host.mk
+
+.NOTPARALLEL:
+override MAKEFLAGS=
+override MAKE:=$(SUBMAKE)
+KDIR=$(KERNEL_BUILD_DIR)
+
+IMG_PREFIX:=openwrt-$(BOARD)$(if $(SUBTARGET),-$(SUBTARGET))
+
+MKFS_DEVTABLE_OPT := -D $(INCLUDE_DIR)/device_table.txt
+
+ifneq ($(CONFIG_BIG_ENDIAN),)
+ JFFS2OPTS := --big-endian --squash-uids -v
+else
+ JFFS2OPTS := --little-endian --squash-uids -v
+endif
+
+ifeq ($(CONFIG_JFFS2_RTIME),y)
+ JFFS2OPTS += -X rtime
+endif
+ifeq ($(CONFIG_JFFS2_ZLIB),y)
+ JFFS2OPTS += -X zlib
+endif
+ifeq ($(CONFIG_JFFS2_LZMA),y)
+ JFFS2OPTS += -X lzma --compression-mode=size
+endif
+ifneq ($(CONFIG_JFFS2_RTIME),y)
+ JFFS2OPTS += -x rtime
+endif
+ifneq ($(CONFIG_JFFS2_ZLIB),y)
+ JFFS2OPTS += -x zlib
+endif
+ifneq ($(CONFIG_JFFS2_LZMA),y)
+ JFFS2OPTS += -x lzma
+endif
+
+JFFS2OPTS += $(MKFS_DEVTABLE_OPT)
+
+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