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Re: More CRC errors...

by Justin Rajewski :: Rate this Message:

On some boots I also get errors like:

Welcome to the Gumstix Linux Distribution!

gumstix login: Dec 31 17:06:44 udhcpc[386]: [truncated] m
Dec 31 17:06:47 udhcpc[387]: [truncated] m
Dec 31 17:07:06 udhcpc[390]: [truncated] m
Dec 31 17:07:09 udhcpc[391]: [truncated] m
Dec 31 17:07:28 udhcpc[394]: [truncated] m
Dec 31 17:07:31 udhcpc[395]: [truncated] m
Dec 31 17:07:50 udhcpc[398]: [truncated] m
Dec 31 17:07:53 udhcpc[399]: [truncated] m
Dec 31 17:08:12 udhcpc[402]: [truncated] m
Dec 31 17:08:15 udhcpc[403]: [truncated] m
Dec 31 17:08:34 udhcpc[406]: [truncated] m
Dec 31 17:08:37 udhcpc[407]: [truncated] m
Dec 31 17:08:56 udhcpc[410]: [truncated] m
Dec 31 17:08:59 udhcpc[411]: [truncated] m

I get the errors even after I have loged in. They just keep comming.
Hopes this helps,
Justin

Steve Sakoman wrote:

Michael,

Wear-leveling, error detection, and bad block handling are done
directly by jffs2:

http://sourceware.org/jffs2/jffs2-html/jffs2-html.html

The CRC errors are a symptom of the real problem, which is *not* data
errors in the array. It is the fact that the flash chip gets stuck n
Read Status Register mode which causes it to return 0x0080 on every
access, which of course will cause jffs2 to think there is a CRC
error.

Steve

On Jan 24, 2008 7:13 AM, Black, Michael <Michael.Black@essexcorp.com> wrote:
> So what about the ECC management then?
> The flash manager docs sure talk about it but I don't see any read
> retries in the linux code nor ECC checks.
> http://download.intel.com/design/flcomp/manuals/30443505.pdf
>
>
> ___________________
> Michael D. Black
> Essex
> black@essexcorp.com
>
> -----Original Message-----
> From: gumstix-users-bounces@lists.sourceforge.net
> [mailto:gumstix-users-bounces@lists.sourceforge.net] On Behalf Of Steve
> Sakoman
> Sent: Thursday, January 24, 2008 8:03 AM
> To: General mailing list for gumstix users.
> Subject: Re: [Gumstix-users] More CRC errors...
>
>
> > Isn't the flash on gumstix NAND flash?
>
> No, it is NOR flash:
>
> http://www.intel.com/design/flcomp/prodbref/306782.htm
>
> Steve
>
>
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