Add ubifs support.

Config.in

@@ -87,6 +87,13 @@ menu "Target Images"
 		help
 		  Create some bootable ISO image
 
+	config TARGET_ROOTFS_UBIFS
+		bool "ubifs"
+		default y if USES_UBIFS
+		depends !TARGET_ROOTFS_INITRAMFS
+		help
+		  Build a ubifs root filesystem
+
 comment "Image Options"
 
 source "target/linux/*/image/Config.in"

include/image.mk

@@ -82,6 +82,14 @@ ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
 		( cd $(TARGET_DIR); find . | cpio -o -H newc | gzip -9 >$(BIN_DIR)/openwrt-$(BOARD)-rootfs.cpio.gz )
     endef
   endif
+  ifeq ($(CONFIG_TARGET_ROOTFS_UBIFS),y)
+    define Image/mkfs/ubifs
+		$(CP) ./ubinize.cfg $(KDIR)
+		mkfs.ubifs $(UBIFS_OPTS) -o $(KDIR)/root.ubifs -d $(TARGET_DIR)
+		(cd $(KDIR); \
+		ubinize $(UBINIZE_OPTS) -o $(BIN_DIR)/openwrt-$(BOARD)-rootfs.ubi ubinize.cfg)
+    endef
+  endif
 else
   define Image/BuildKernel
 	cp $(KDIR)/vmlinux.elf $(BIN_DIR)/openwrt-$(BOARD)-vmlinux.elf
@@ -146,6 +154,7 @@ ifneq ($(IB),1)
 	$(call Image/mkfs/cpiogz)
 	$(call Image/mkfs/ext2)
 	$(call Image/mkfs/iso)
+	$(call Image/mkfs/ubifs)
 	$(call Image/Checksum)
 else
   install: compile install-targets
@@ -156,6 +165,7 @@ else
 	$(call Image/mkfs/cpiogz)
 	$(call Image/mkfs/ext2)
 	$(call Image/mkfs/iso)
+	$(call Image/mkfs/ubifs)
 	$(call Image/Checksum)
 endif
 

target/linux/xburst/image/Makefile

@@ -9,6 +9,9 @@ include $(INCLUDE_DIR)/image.mk
 
 JFFS2_BLOCKSIZE=256k 512k
 
+UBIFS_OPTS = -m 4096 -e 516096 -c 4095
+UBINIZE_OPTS = -m 4096 -p 512KiB
+
 ifneq ($(CONFIG_XBURST_UBOOT),)
   define Build/Clean
 	$(MAKE) -C u-boot clean

target/linux/xburst/image/ubinize.cfg

@@ -0,0 +1,14 @@
+[rootfs]
+# Volume mode (other option is static)
+mode=ubi
+# Source image
+image=root.ubifs
+# Volume ID in UBI image
+vol_id=0
+# Allow for dynamic resize
+vol_type=dynamic
+# Volume name
+vol_name=rootfs
+# Autoresize volume at first mount
+vol_flags=autoresize
+