[U-Boot] [PATCH v4 6/6] arm, davinci: Add support for generating AIS images to the Makefile

Christian Riesch
2011-12-03T05:20:19Z

Hi Mike,
Thanks for your comments.

On Friday, December 2, 2011, Mike Frysinger <vapier@gentoo.org> wrote:
> On Friday 02 December 2011 11:12:10 Christian Riesch wrote:
>> +$(obj)u-boot.ais: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
>> + $(obj)tools/mkimage -s -n /dev/null -T aisimage \
>> + -e $(CONFIG_SPL_TEXT_BASE) -d $(obj)spl/u-boot-spl.bin \
>> + $(obj)spl/u-boot-spl.ais
>> + $(OBJCOPY) ${OBJCFLAGS} -I binary \
>> + --pad-to=$(CONFIG_SPL_MAX_SIZE) -O binary \
>> + $(obj)spl/u-boot-spl.ais $(obj)spl/u-boot-spl-pad.ais
>> + cat $(obj)spl/u-boot-spl-pad.ais $(obj)u-boot.bin > \
>> + $(obj)u-boot.ais
>
> lack of indentation on wrapped lines makes it hard to see what's going on

I'll change that.

The chaos above contains three commands:
1) I run the SPL through mkimage to add an AIS header for booting from SPI.
Since an empty config file (-n) is sufficient here I use /dev/null here.
2) I pad the result $(obj)spl/u-boot-spl.ais to $CONFIG_SPL_MAX_SIZE with
$(OBJCOPY): The result is $(obj)spl/u-boot-spl-pad.ais
3) Then I add $(obj)u-boot.bin with cat, the result is $(obj)u-boot.ais

>
>> + rm $(obj)spl/u-boot-spl.ais
>> + rm $(obj)spl/u-boot-spl-pad.ais
>
> rm $(obj)spl/u-boot-spl{,-pad}.ais

Ok.

Regards, Christian

> -mike
>