[U-Boot] [PATCH 12/24] arm: Allow cleanup_before_linux() without disabling caches

Simon Glass
2015-05-04T17:49:16Z

Hi Marek,

On 4 May 2015 at 11:36, Marek Vasut <marex@denx.de> wrote:
> On Monday, May 04, 2015 at 07:31:05 PM, Simon Glass wrote:
>> This function is used before jumping to U-Boot, but in that case we don't
>> always want to disable caches.
>>
>> Signed-off-by: Simon Glass <sjg@chromium.org>
>> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
>
> In which usecase exactly is this applicable please ? :)

This is sort-of related to "Enable detecting when U-Boot is started
from SPL" so there are some details there.

I was able to get SPL to enable the cache and leave it on all the way
through the verified boot flow (read-only and read-write U-Boot) and
it saved about 600ms. So in short this refactor allows you to jump
into U-Boot with the cache still enabled.

Regards,
Simon