[U-Boot] [PATCH 1/7] spl: pbl: Add new SPL image for pblimage tool

[Albert ARIBAUD]

Hi Huan,

On Fri, 19 Sep 2014 05:07:05 +0000, Huan Wang
<alison.wang at freescale.com> wrote:

> Hi, Albert,
> 
> > On Thu, 18 Sep 2014 13:47:13 +0800, Alison Wang <b18965 at freescale.com>
> > wrote:
> > 
> > > For the pblimage tool, the SPL image is splitted into 64 byte chunks,
> > > and PBL needs a command for each piece. In current pblimage structure,
> > > the size of the SPL image should be a fixed value. Well, for LS102xA
> > > and some other ARM platforms, the size of the SPL image is changeable.
> > > So a new image spl/u-boot-spl-pbl-pad.bin is built, and the size of
> > it
> > > is a fixed value "CONFIG_SPL_MAX_SIZE". Use it instead of
> > > spl/u-boot-spl.bin for LS102xA.
> > >
> > > CONFIG_SPL_PBL_PAD is used to enable this function.
> > >
> > > Signed-off-by: Alison Wang <alison.wang at freescale.com>
> > > ---
> > 
> > There is already a CONFIG_SPL_PAD_TO (see ./README). Can you not use
> > this?

(BTW, thanks for fixing the way your mailer quotes. That's much more
readable to me.)
 
> [Alison Wang] I have already used CONFIG_SPL_PAD_TO to determine the offset to which u-boot-spl.pbl should be padded when generating u-boot-with-spl-pbl.bin. Well, I used CONFIG_SPL_MAX_SIZE to determine the size of u-boot-spl-pbl-pad.bin. u-boot-spl-pbl-pad.bin is generated by padding u-boot-spl.bin to CONFIG_SPL_MAX_SIZE.

I'm still lost. Can you summarize the sequence of operations
performed, starting from the u-boot SPL elf file, and on each step
indicate which file is produced and which config option(s) from
CONFIG_SPL_[PBL_]{PAD_TO,MAX_SIZE} is(are) involved and why?

Also, in any case, if CONFIG_SPL_PBL_PAD is needed then it must be
added to README with its description.

> Best Regards,
> Alison Wang

Amicalement,
-- 
Albert.