STM32MP1 boot slow
patrick.delaunay at st.com
Mon Mar 30 10:05:50 CEST 2020
> 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,
> >>> 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"
> Best regards,
> Marek Vasut
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