[U-Boot] [PATCH 3/3] ARM: tegra: Disable SPL and non-cached memory on 64-bit

[Stephen Warren]

On 07/28/2015 09:33 AM, Simon Glass wrote:
> Hi,
>
> On 27 July 2015 at 11:45, Stephen Warren <swarren at wwwdotorg.org> wrote:
>> From: Thierry Reding <treding at nvidia.com>
>>
>> For 64-bit ARM SoCs we rely on non-U-Boot code to bring up the CPU in
>> AArch64 mode so that we don't need the SPL. Non-cached memory is not
>> implemented (yet) for 64-bit ARM.
>>
>> Signed-off-by: Thierry Reding <treding at nvidia.com>
>> Signed-off-by: Tom Warren <twarren at nvidia.com>
>> Signed-off-by: Stephen Warren <swarren at nvidia.com>
>> ---
>>   include/configs/tegra-common.h | 4 ++++
>>   1 file changed, 4 insertions(+)
>
> What does start up the CPU? Is this something that will be implemented
> in SPL later?

At least initially, the plan is to use a separate bootloader on the boot 
CPU (was named AVP, but got renamed to BPMP lite in Tegra210). It's 
vaguely possible that U-Boot SPL support will exist in the future, but 
I'm not sure.