Re: JFFS2 errors - are these normal?

[Patrick Agrain <patrick.agrain@alcatel-lucent.fr>]

Hi Ramesh ,

What Flash from ST have you tested ? Is it a 256MBytes ? Large Pages 
(2048 bytes) ?
What is the marking on the chip ?

Thanks in advance.
Regards,

Patrick Agrain

Ricard Wanderlof a écrit :
> On Tue, 18 Dec 2007, Ramesh wrote:
> 
>> Hi,
>>
>> I am using linux 2.6.19 and ST micro NAND chip (256M) on a PowerPC
>> platform. After booting the OS, we install firmware on to the flash.
>> These firmware images are RPM packages. Once some packages are
>> installed, we start getting some ECC errors. I guess that's fine but
>> after a few more RPM installs, the errors seem more serious. Here's a
>> sample:
> 
> You shouldn't be getting ECC errors that quickly, on a chip like that I 
> would expect it would take many months before you'd see an ECC error if 
> ever.
> 
> My guess without knowing more would be that there is a hardware problem 
> causing the communication with the nand chip to fail ever so often.
> 
>> The jffs2 image is created with the following flags: -e 0x20000 -s
>> 0x1000 -b -v -p -n
>> Then I use sumtool with -e 0x20000 -b -p.
> 
> If the device mounts properly then there shouldn't be much wrong with the 
> image.
> 
> /Ricard
> --
> Ricard Wolf Wanderlöf                           ricardw(at)axis.com
> Axis Communications AB, Lund, Sweden            www.axis.com
> Phone +46 46 272 2016                           Fax +46 46 13 61 30
> 
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