STM32MP1 boot slow

[Marek Vasut]

On 3/30/20 10:05 AM, Patrick DELAUNAY wrote:
> Hi,

Hi,

>> From: Marek Vasut <marex at denx.de>
>> Sent: vendredi 27 mars 2020 19:21
>>
>> On 3/27/20 4:35 PM, Patrick DELAUNAY wrote:
>>> Hi Marek,
>>
>> Hi,
>>
>> [...]
>>
>>>>> I would like to see patches to enable the cache. We did this some
>>>>> years ago in a Chromebook and it made a big difference. It is not
>>>>> that hard.
>>>>
>>>> ACK. Why did the chromebook patches never make it upstream ?
>>>
>>> Work in progress
>>> https://gitlab.denx.de/u-boot/custodians/u-boot-stm/-/commit/3399fb37c
>>> 3b7db6e99118766c4d1cd5e742ecc8f
>>>
>>> with improvements
>>>
>>> For example, the result on STM32MP157C-DK2 board is:
>>>    1,6s gain for trusted boot chain with TF-A
>>>    2,2s gain for basic boot chain with SPL
>>>
>>> I will push this patch after sanity checks (ARM requirement on TLB /
>>> cache update with MMU activated).
>>
>> Nice, thanks. CC me when submitting it.
> 
> I check the dcache and MMU sequence with my patch and it is correctly
> handled in SPL and U-Boot pre-reloc.
> 
> So the I send my my patch today:
> "arm: stm32mp1: activate data cache in SPL and before relocation"
> 
> http://patchwork.ozlabs.org/patch/1263815/

I added some review comments, thanks.