[U-Boot] [PATCH 0/4] Tegra210 support for P2571

[Simon Glass]

Hi Tom,

I've got one of these shield things  - it is a seriously cool piece of
hardware. I've have to read a bit about what is it for.

So, any idea where to find a UART and recovery button?

Regards,
Simon


On 17 June 2015 at 16:44, Tom Warren <TWarren at nvidia.com> wrote:
> Yes, it's a 32-bit T210 U-Boot.  T210 supports both AARCH32 and AARCH64.
>
> A 64-bit build will follow, but I haven't figured out how to meld the 32-bit AVP SPL portion/build with the 64-bit CPU portion/build in one clean build command, so I'm building them separately and then fusing them together in a separate script.  If anyone has ideas on how to generate a hybrid 32-bit (AVP)/64-bit (A57) U-Boot binary in one fell swoop, I'm all ears. :)
>
> Tom
>
>> -----Original Message-----
>> From: Stephen Warren [mailto:swarren at wwwdotorg.org]
>> Sent: Wednesday, June 17, 2015 1:07 PM
>> To: Tom Warren
>> Cc: u-boot at lists.denx.de; Stephen Warren; Tom Warren
>> Subject: Re: [U-Boot] [PATCH 0/4] Tegra210 support for P2571
>>
>> On 06/03/2015 02:35 PM, Tom Warren wrote:
>> > Adds support for Tegra210 SoC and P2571 NVIDIA board.
>> > Largely based on T124/Venice2. This is a baseline patchset - more will
>> > follow to make things more T210- specific as P2571 peripherals/devices
>> > are brought up.
>>
>> Does this add support for a 32-bit or a 64-bit U-Boot? Since T210 is a 64-bit CPU I
>> would have expected a 64-bit U-Boot, yet:
>>
>> a)
>>
>> arch/arm/Kconfig contains:
>>
>> config TEGRA
>> ...
>>          select CPU_V7
>>
>> and this patch doesn't modify that.
>>
>> b)
>>
>> I can built an executable with these patches applied (after manually fixing up
>> some merge problems) with an ARMv7 compiler, but not with an
>> ARMv8 compiler.
>>
>> I think that means this is a 32-bit port. We need a 64-bit port.
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