[U-Boot] [PATCH 5/7] omap_gpmc: use SOFTECC in SPL if it's enabled

[Ilya Yanok]

Hi Simon,

On 21.10.2011 15:08, Simon Schwarz wrote:
>>>> Use software ECC for the SPL build if support for software ECC in
> SPL is
>>>> enabled.
>>>
>>> I'am curious: Is there a special reason for having software ecc in SPL?
>>
>> Well, yes. On OMAP2+ ECC mode defaults to software (incompatible with HW
>> mode; 256 vs 512 bytes block size) both in U-Boot and Linux (U-Boot has
>> command to change it while in Linux you have to recompile the kernel).
>>
>> So we need software ecc to read images written from Linux.
> 
> ok. Agreed.
> 
> Another thing just poped into my mind, ATM I have a DMA patch for
> devkit8000 on the ML:
> http://article.gmane.org/gmane.comp.boot-loaders.u-boot/109744
> http://article.gmane.org/gmane.comp.boot-loaders.u-boot/112661

Yes, I've seen this patch.

> It speeds up the process of copying the u-boot/linux image. ATM this is
> in combination with HW ecc and I doubt that it will work seamlessly with
> SW-ecc, yet. However IMHO DMA in combination with SW-ecc could be nearly
> as fast as using HW-ecc.
> 
> So maybe an adaption is worth a try?

Uh.. Had no time to look at it last days... I'll try to take a look at
it this weekend.

Regards, Ilya.