[PATCH u-boot-mvebu 00/31] kwboot / kwbimage improvements

[Stefan Roese]

Hi Marek,

On 09.07.21 13:22, Marek Behún wrote:
> Hi Stefan
> 
> On Fri, 9 Jul 2021 08:05:40 +0200
> Stefan Roese <sr at denx.de> wrote:
> 
>>> The main goal of this series is to correctly use BootROM's code
>>> for loading U-Boot from NOR / NAND: currently only SPL is read by
>>> BootROM and the main U-Boot is read by SPL. By using BootROM to also
>>> load main U-Boot we can reduce the size of SPL image, since it does
>>> not need to contain code for reading NOR / NAND.
>>
>> Before going into a review of the patches, let me ask about the
>> motivation of this patchset. Is the reduction of the SPL image size
>> the main motivation for this series? Or did you experiece some
>> problems with the SPL code for U-Boot proper loading?
> 
> The motivation is reduction of SPL code size.
> Pali started working on something different (adding support for higher
> baudrates to kwboot, so that a bricked board can be booted over UART
> faster), and he is still working on it, but when he started studying the
> kwbimage/kwboot code and A38x documentation, he noticed that these
> things could be improved, so first he did this series.
> 
>> BTW: This patch / mail subject "kwboot / kwbimage improvements" does
>> not really match its content AFAIU. Here, the SPL returns always back
>> to the BootROM for U-Boot proper loading part is missing. Or do I
>> misunderstand something?
> 
> You are right, the subject of the series could have been better. I
> shall change it in v2.
> 
>>
>> BTW2: Could you please list the affected MVEBU SoC's that are affected
>> by this series so that this is clear?
> 
> OK.

Thanks. And could you please also do one (or more) boot-time
comparisons, old vs. new version? This way we can see, if and how the
boot-time is affected (perhaps improved, which would be great) by this
patch series.

Thanks,
Stefan

> Marek
> 


Viele Grüße,
Stefan

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