Hi,
From: Marek Vasut marex@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/
[...]
-- Best regards, Marek Vasut
Regards Patrick