diff --git a/Makefile b/Makefile
index 34d9075..55fc72d 100644
--- a/Makefile
+++ b/Makefile
@@ -554,8 +554,16 @@ $(obj)u-boot.lds: $(LDSCRIPT)
 nand_spl:	$(TIMESTAMP_FILE) $(VERSION_FILE) depend
 		$(MAKE) -C nand_spl/board/$(BOARDDIR) all
 
+ifdef CONFIG_JZ4740
+$(obj)u-boot-nand.bin:	$(obj)u-boot.bin $(obj)spl/u-boot-spl.bin
+		dd if=$(obj)spl/u-boot-spl.bin of=$(obj)spl/u-boot-nand.bin conv=sync bs=8192 count=1
+		dd if=$(obj)spl/u-boot-spl.bin of=$(obj)spl/u-boot-nand.bin conv=sync,notrunc oflag=append bs=8192 count=1
+		tr '\0' '\377' < /dev/zero | dd of=$(obj)spl/u-boot-nand.bin conv=sync,notrunc oflag=append bs=16384 count=1
+		cat $(obj)spl/u-boot-nand.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin
+else
 $(obj)u-boot-nand.bin:	nand_spl $(obj)u-boot.bin
 		cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin
+endif
 
 $(obj)spl/u-boot-spl.bin:	$(SUBDIR_TOOLS) depend
 		$(MAKE) -C spl all