[U-Boot] [PATCH v2 08/10] tegra20: add u-boot.t2 target

[Allen Martin <amartin@nvidia.com>]

On Wed, Jun 06, 2012 at 09:48:23AM -0700, Stephen Warren wrote:
> On 06/05/2012 03:20 PM, Allen Martin wrote:
> > Add target for tegra20 u-boot image.  This is a concatenation of tegra
> > spl and normal u-boot binaries.
> 
> > diff --git a/board/nvidia/seaboard/config.mk b/board/nvidia/seaboard/config.mk
> 
> > +PAD_TO=0x00108000
> 
> Oh crap, does this mean that we have to start flashing the combined
> u-boot.t2 at 0x8000 (IIRC the start address of the SPL in an earlier
> patch) instead of 0x108000? That would cause all kinds of problems. If
> that is the case, can we move the SPL to the existing 0x108000, and bump
> the regular U-Boot up a bit to make space? If that isn't the case, could
> you please explain exactly how the SPL memory layout etc. works for me?
> Thanks.

The addresses are arbitrary, I picked 0x8000 for the SPL to preserve
the existing 0x108000 for the normal u-boot but it doesn't have to be
that way.  The only requirement is that the SPL needs to know the
address of the normal u-boot at compile time because it doesn't have
any smarts to look for it.

I'll move the SPL to 0x108000 and the normal u-boot to 0x208000 if
that sounds more acceptable.

-Allen
-- 
nvpublic