From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] OMAP3 NAND ECC bug report
Date: Thu, 27 Oct 2011 14:02:56 -0500 [thread overview]
Message-ID: <4EA9AAE0.40100@freescale.com> (raw)
In-Reply-To: <CAB6Tvp35ndGndGOR_E0HOBrpacqnqssuwYOF5NH9D_j2x65aCA@mail.gmail.com>
On 10/27/2011 10:22 AM, Ivan Nardi wrote:
> On 20 October 2011 11:06, Arno Steffen <arno.steffen@googlemail.com> wrote:
>>
>> I modified single bits by adding a patch (thanks Scott Wood) to uboot,
>> that allows write in raw mode to flash. Single bit error can corrected
>> with HW-ECC, not with SW-ECC.
>
> Hi all,
>
> I would be very interested in using that patch (it is very useful for
> testing ecc algorithms)
> In u-boot the command "nand biterr" isn't implemented yet and some
> code found in the mailing list is pretty old and never merged (why?)
> into mainline (http://www.mail-archive.com/u-boot at lists.denx.de/msg22963.html)
>
> Could you share it?
> Thanks a lot
raw read/write was recently added to mainline U-Boot:
commit fb3659ac422801ea18f36ef62926df70beeada4c
Author: Marek Vasut <marek.vasut@gmail.com>
Date: Fri Sep 23 15:43:10 2011 +0200
NAND: Add nand read.raw and write.raw commands
These commands should work around various "hardware" ECC and BCH
methods.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
[scottwood at freescale.com: s/write the page/access the page/]
Signed-off-by: Scott Wood <scottwood@freescale.com>
As for why the biterr patch wasn't merged, it's because nobody ever
resubmitted with a version that fixed the issues raised in review and
applies to the current tree.
-Scott
prev parent reply other threads:[~2011-10-27 19:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-20 9:06 [U-Boot] OMAP3 NAND ECC bug report Arno Steffen
2011-10-21 9:28 ` Arno Steffen
2011-10-25 7:41 ` Arno Steffen
2011-10-26 20:26 ` Scott Wood
2011-10-28 6:10 ` Arno Steffen
2011-10-28 16:06 ` Scott Wood
2011-10-31 9:36 ` Arno Steffen
2011-10-27 15:22 ` Ivan Nardi
2011-10-27 19:02 ` Scott Wood [this message]
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