[U-Boot] [PATCH v7 13/19] Makefile: u-boot-with-spl.bin: Fix SPL padding

[Benoît Thébaudeau]

Hi Poonam, Andy,

On Friday, February 15, 2013 9:54:19 PM, Benoît Thébaudeau wrote:
> PAD_TO is not a generic SPL configuration option, so use CONFIG_SPL_MAX_SIZE
> instead.
> 
> We want to use --pad-to with a size, but this option expects an address, so
> use
> u-boot-spl.bin instead of u-boot-spl as the input file in order to get
> addresses
> starting at 0.
> 
> Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau at advansee.com>
> ---
> Changes in v7:
>  - Use u-boot-spl.bin instead of u-boot-spl in order to avoid having to use
>    --change-addresses.
> 
> Changes in v6:
>  - Fix size passed to --pad-to thanks to --change-addresses.
> 
> Changes in v5: None
> Changes in v4:
>  - New patch.
> 
> Changes in v3: None
> Changes in v2: None
> 
>  Makefile |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Makefile b/Makefile
> index a8c7b7b..317dffc 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -486,7 +486,8 @@ $(obj)u-boot.dis:	$(obj)u-boot
>  		$(OBJDUMP) -d $< > $@
>  
>  $(obj)u-boot-with-spl.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
> +		$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SPL_MAX_SIZE) \
> +			-I binary -O binary $< $(obj)spl/u-boot-spl-pad.bin
>  		cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $@
>  		rm $(obj)spl/u-boot-spl-pad.bin

I would like to let you know what is going on, and to get your feedback for this
patch.

include/configs/p1_p2_rdb_pc.h seems to be the only current user of
u-boot-with-spl.bin, triggered for example by the P2020RDB-PC_NAND config.

Before this patch, PAD_TO was used, but there is no such definition for this
board for generic SPL, so this board seems broken, all the more none of the
various values defined for CONFIG_SYS_TEXT_BASE relatively to
CONFIG_SPL_TEXT_BASE would be compatible with an image built by appending U-Boot
to the generic SPL. Can you confirm?

This patch won't fix this board, but I want to make sure that it won't be an
issue for you now or later.

Best regards,
Benoît