[U-Boot] [PATCH v4 10/11] Add u-boot-pad.bin target to the Makefile

[Tom Rini]

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On 09/19/12 15:39, Scott Wood wrote:
> On 09/19/2012 06:25:26 AM, José Miguel Gonçalves wrote:
>> Samsung's S3C24XX SoCs need this in order to generate a binary
>> image with a padded SPL concatenated with U-Boot.
>> 
>> Signed-off-by: José Miguel Gonçalves <jose.goncalves at inov.pt> 
>> --- Changes for v2: - None
>> 
>> Changes for v3: - Changed new binary target name from
>> u-boot-ubl.bin to u-boot-pad.bin
>> 
>> Changes for v4: - None --- Makefile |   11 ++++++----- 1 file
>> changed, 6 insertions(+), 5 deletions(-)
>> 
>> diff --git a/Makefile b/Makefile index 8738d55..86dedca 100644 
>> --- a/Makefile +++ b/Makefile @@ -433,14 +433,15 @@
>> $(obj)u-boot.sha1:    $(obj)u-boot.bin $(obj)u-boot.dis:
>> $(obj)u-boot $(OBJDUMP) -d $< > $@
>> 
>> -$(obj)u-boot.ubl:       $(obj)spl/u-boot-spl.bin
>> $(obj)u-boot.bin +$(obj)u-boot-pad.bin:
>> $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin $(OBJCOPY) ${OBJCFLAGS}
>> --pad-to=$(PAD_TO) -O binary $(obj)spl/u-boot-spl
>> $(obj)spl/u-boot-spl-pad.bin -        cat
>> $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > 
>> $(obj)u-boot-ubl.bin -        $(obj)tools/mkimage -n
>> $(UBL_CONFIG) -T ublimage \ -        -e $(CONFIG_SYS_TEXT_BASE)
>> -d $(obj)u-boot-ubl.bin $(obj)u-boot.ubl -        rm
>> $(obj)u-boot-ubl.bin +        cat $(obj)spl/u-boot-spl-pad.bin
>> $(obj)u-boot.bin > $(obj)u-boot-pad.bin rm
>> $(obj)spl/u-boot-spl-pad.bin
> 
> This rule lists u-boot-spl.bin as a prerequisite, but it doesn't
> appear to use it -- it uses u-boot-spl instead.
> 
> It seems that either spl/Makefile should produce u-boot-spl rather
> than u-boot-spl.bin and let the toplevel Makefile deal with
> converting it to a binary, or spl/Makefile should take care of
> adding any needed padding for the target and the final rule should
> just be a concatenation.

So, if we use a weak PAD_TO value of say 0x1, we could always "pad"
u-boot-spl.bin out and then do the concatenation here and in a few
other targets as well.

- -- 
Tom
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