MTD & JFFS on Arcom SBC

MTD & JFFS on Arcom SBC

[Micheal Kelly]

Hi all,

I've got an Arcom MediaGX board here that I'm trying to get working w/Linux 
2.4-test12pre7 ...  Has anyone else tried the latest MTD source from CVS with 
this board?

It boots, loads the kernel, and it *does* identify the onboard flash - it 
even seems able to *read* from the flash (a JFFS filesystem)... but when a 
write occurs, the screen fills with errors - they go scrolling by too quickly 
to see, but they're something along the lines of:

Chip not ready for buffer write ...  XStatus = 30  bstatus = 0

and

flash_safe_write returned 5

After a few seconds, the screen fills with:

jffs_garbage_collect_thread():  free size == 0 This is BAD.

:)

Also,
I inadvertently compiled the latest MTD sources from CVS with the JFFS 
included in the 2.4 sources and while I still couldn't write to the flash, I 
wouldn't get clobbered by 1000's of errors - I'd get one "Chip not ready", 
and then get the # prompt back....

Anyone have this working with 2.4?


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RE: MTD & JFFS on Arcom SBC

[mark.langsdorf]

I'm getting a similar set of error messages with
my AMD flash chips.

I posted a partial message list (for some reason, the
MTD printks weren't being collected properly) under the
title "Odd behavior of JFFS with AMD chips - kernel panic!"
on Monday.

-Mark Langsdorf
AMD, Inc.

> -----Original Message-----
> From: Micheal Kelly [mailto:michealk@thegravitywell.dhs.org]
> Sent: Thursday, December 07, 2000 11:35 AM
> To: mtd@infradead.org
> Subject: MTD & JFFS on Arcom SBC
> 
> 
> Hi all,
> 
> I've got an Arcom MediaGX board here that I'm trying to get 
> working w/Linux 
> 2.4-test12pre7 ...  Has anyone else tried the latest MTD 
> source from CVS with 
> this board?
> 
> It boots, loads the kernel, and it *does* identify the 
> onboard flash - it 
> even seems able to *read* from the flash (a JFFS 
> filesystem)... but when a 
> write occurs, the screen fills with errors - they go 
> scrolling by too quickly 
> to see, but they're something along the lines of:
> 
> Chip not ready for buffer write ...  XStatus = 30  bstatus = 0
> 
> and
> 
> flash_safe_write returned 5
> 
> After a few seconds, the screen fills with:
> 
> jffs_garbage_collect_thread():  free size == 0 This is BAD.
> 
> :)
> 
> Also,
> I inadvertently compiled the latest MTD sources from CVS with 
> the JFFS 
> included in the 2.4 sources and while I still couldn't write 
> to the flash, I 
> wouldn't get clobbered by 1000's of errors - I'd get one 
> "Chip not ready", 
> and then get the # prompt back....
> 
> Anyone have this working with 2.4?
> 
> 
> To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org
> 



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Re: MTD & JFFS on Arcom SBC

[Michiel Ronsse]

Micheal Kelly wrote:
> 
> Hi all,
> 
> I've got an Arcom MediaGX board here that I'm trying to get working w/Linux
> 2.4-test12pre7 ...  Has anyone else tried the latest MTD source from CVS with
> this board?

We are using several Arcom MediaGX boards quite sucessfully with
2.4-test8.
We are quite happy with this kernel, so I never bothered trying one of
the later
kernels. What amount of flash are you using (we have 16MB)?


Michiel Ronsse.


+-- Michiel Ronsse ------- michiel@ronsse.com --+
| Parallel Information Systems Group            |
| ELIS - Ghent University  - Ghent, Belgium     |
| Phone: +32/9/264.33.67   Fax: +32/9/264.35.94 |
+-------- http://www.michiel.ronsse.com --------+

In a train station the train stops, in a work station ...


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Re: MTD & JFFS on Arcom SBC

[Micheal Kelly]

Hello Michiel,

We are using 16 MB also - I'm curious - what version of MTD are you using?  
Something fairly recent from CVS, or an earlier release?  

On Thursday 07 December 2000 13:08, Michiel Ronsse wrote:
> Micheal Kelly wrote:
> > Hi all,
> >
> > I've got an Arcom MediaGX board here that I'm trying to get working
> > w/Linux 2.4-test12pre7 ...  Has anyone else tried the latest MTD source
> > from CVS with this board?
>
> We are using several Arcom MediaGX boards quite sucessfully with
> 2.4-test8.
> We are quite happy with this kernel, so I never bothered trying one of
> the later
> kernels. What amount of flash are you using (we have 16MB)?
>
>
> Michiel Ronsse.


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Re: MTD & JFFS on Arcom SBC

[Michiel Ronsse]

Micheal Kelly wrote:
> 
> Hello Michiel,
> 
> We are using 16 MB also - I'm curious - what version of MTD are you using?
> Something fairly recent from CVS, or an earlier release?
> 


We are using kernel 2.4.0-test7 with the MTD patches mtd-patch-2.4.x and
mtd-patch-2.4.0-test2.

Michiel.

-- 
+-- Michiel Ronsse ------- michiel@ronsse.com --+
| Parallel Information Systems Group            |
| ELIS - Ghent University  - Ghent, Belgium     |
| Phone: +32/9/264.33.67   Fax: +32/9/264.35.94 |
+-------- http://www.michiel.ronsse.com --------+

In a train station the train stops, in a work station ...


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Re: MTD & JFFS on Arcom SBC

[David Vrabel]

Hi,

[snip: MTD not working on SBC-MediaGX]

I think you'll find that the latest MTD CVS now works on the
SBC-MediaGX.  (At least with 2.2.17 kernels...)

David Vrabel



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