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From: "Eric Bénard" <eric@eukrea.com>
To: raespi <raespi@icid.cu>
Cc: barebox@lists.infradead.org
Subject: Re: problem booting with Micron MT29F8G08ABABAWP ...
Date: Fri, 14 Mar 2014 21:18:58 +0100	[thread overview]
Message-ID: <20140314211858.05897c4e@e6520eb> (raw)
In-Reply-To: <53234E31.2070300@icid.cu>

Hello,

Le Fri, 14 Mar 2014 14:45:05 -0400,
raespi <raespi@icid.cu> a écrit :

> Hello again ... diving through the drivers/mtd/nand/nand_base.c code I 
> managed to boot with this little modification in the 
> nand_flash_detect_onfi() function just before exiting from it:
> 
>      if ( mtd->oobsize > 128 )
>        mtd->oobsize = 128;
> 
then you tell your flash has an OOB of 128 when it has more ...

> Apparently the only allowed oobsizes are 8, 16, 64 and 128 according to 
> the nand_scan_ident() function.  I followed Eric's advice in seeing how 
> the i.Mx manages it and it's something like this:
> 
> NFC_V3_CONFIG2_SPAS(((mtd->oobsize > 218) ?
>              218 : mtd->oobsize) >> 1)
> 
that's specific to the i.MX NAND controller : you need to adapt the
code of _your_ CPU's NAND controller to get it to properly support 4k
page flashes.

Eric

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  reply	other threads:[~2014-03-14 20:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-13 19:32 problem booting with Micron MT29F8G08ABABAWP raespi
2014-03-13 20:28 ` Eric Bénard
2014-03-14 18:45   ` raespi
2014-03-14 20:18     ` Eric Bénard [this message]
2014-03-14 20:30       ` raespi
2014-03-17  6:39     ` Sascha Hauer

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