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

[Allen Martin <amartin@nvidia.com>]

On Wed, Jun 06, 2012 at 12:57:05PM -0700, Stephen Warren wrote:
> On 06/06/2012 01:53 PM, Tom Warren wrote:
> >>
> >> I'll move the SPL to 0x108000 and the normal u-boot to 0x208000 if that
> >> sounds more acceptable.
> > The current flash tools everyone is using expect to flash U-Boot to 0x0108000 (on T20). This works with the non-SPL (current) upstream U-Boot for Tegra, and should continue to work for any new SPL Tegra U-Boot, so that people can use the same flash tools for either build.
> > 
> > Note that the above statement assumes we'll still be able to build either a 'normal' non-SPL build of Tegra U-Boot and a SPL build with your patchset, at least in the interim while we're testing/reviewing these major changes.
> 
> I assume that once a board is converted to SPL, you always use a
> matched/concatenated pair of SPL+non-SPL, i.e. never SPL on its own or
> non-SPL on its own?

Yes, that's the intention.  Although I do have plans down the road for
adding memory initialization to the SPL so I can use it for
boot/flashing when in recovery mode and there's no BCT.  In the normal
case they have to be used together.

> 
> But that does bring up one point - boards which haven't yet converted to
> SPL need to still build/link for the original 00108000 address, so the
> addresses need to depend on config data.
> 
> Either that, or just convert all boards at once?

I'll need to convert all the boards.  Since I removed the Cortex A9
init from the normal u-boot it will no longer work for non SPL boot.
I think that's what we want anyway, I just may need some help testing
some of the boards I don't have.

-Allen
-- 
nvpublic