On 10/13/2012 10:59 AM, Marek Vasut wrote: >> From: Xiangfu <[email protected]> >> > >> > The JZ4740 CPU can load 8KB from two different addresses: >> > 1. the normal area up to 8KB starting from NAND flash address 0x00000000 >> > 2. the backup area up to 8KB starting from NAND flash address 0x00002000 >> > >> > After create u-boot-spl.bin. it needs those 4 commands create final image >> > for jz4740 cpu. ~~~~ >> > dd if=spl/u-boot-spl.bin of=u-boot-nand.bin conv=sync bs=8192 count=1 >> > dd if=spl/u-boot-spl.bin of=u-boot-nand.bin conv=sync,notrunc >> > oflag=append bs=8192 count=1 tr '\0' '\377' < /dev/zero | dd >> > of=u-boot-nand.bin conv=sync,notrunc oflag=append bs=16384 count=1 cat >> > u-boot-nand.bin u-boot.bin > u-boot-nand-final.bin >> > ~~~~ > Can you not do this in the linker script? Or implement CPU-specific build > target > that does this?
Hi Marex Thanks for reply, I don't know how to do this in linker script. but I have plan to send out a patch on Makefile. Attachment is the patch. do you think it is ok for upstream? if it's ok. I will send out this patch in another email. Xiangfu
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
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