[U-Boot] [RFC PATCH 02/10] Makefile: use "arm64" architecture for U-Boot image files

[Andre Przywara]

Hi,

On 03/11/16 08:54, Alexander Graf wrote:
> On 11/03/2016 02:36 AM, Andre Przywara wrote:
>> At the moment we use the arch/arm directory for arm64 boards as well,
>> so the Makefile will pick up the "arm" name for the architecture to use
>> for tagging binaries in U-Boot image files.
>> Differentiate between the two by looking at the CPU variable being
>> defined
>> to "armv8", and use the arm64 architecture name on creating the image
>> file if that matches.
>>
>> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> 
> Why is this important? To know the state you have to be in for
> SPL->U-Boot transition later?

Yes.

> Why didn't anyone else stumble over this yet? Because nobody's using SPL?

Given the warnings and bugs I found when I compiled the SPL for 64 bit
I'd assume the latter.

But I was asking this question myself already. Apparently everyone just
hacked their firmware chain to live with "arm" in there, APM being a
prominent example.

So given this I am a bit wary about the implication of this patch, I
hope that people holler if this breaks their platform (and then fix that
instead of hacking U-Boot again).

Cheers,
Andre.