How to configure MTD so that JFFS2 work on 7312 NandFlash?

How to configure MTD so that JFFS2 work on 7312 NandFlash?

[Jason Chan]

Hi all,
    I am trying to configure MTD NandFlash and JFFS2 on EP7312 NandFlash 
driver.
However, when I try to access, it output "I/O Error".
But when the kernel bootup, I can see that the kernel successfully find 
out the nandflash device. So how can I make the JFFS2 and MTD work on 7312?

-- 
Best Regards,

Jason Chan
Emsoft Ltd.

Re: How to configure MTD so that JFFS2 work on 7312 NandFlash?

[Marius Groeger]

On Tue, 18 Jun 2002, Jason Chan wrote:

> Hi all,
>     I am trying to configure MTD NandFlash and JFFS2 on EP7312 NandFlash
> driver.
> However, when I try to access, it output "I/O Error".
> But when the kernel bootup, I can see that the kernel successfully find
> out the nandflash device. So how can I make the JFFS2 and MTD work on 7312?

Are you using the Cogent Evalboard (EP7312 is just the CPU)? Do you use the
latest MTD snapshot? It worked quite well over here last time I checked.
Unfortunately my EDB7312 is not available at the moment.

Regards
Marius

-----------------------------------------------------------------------------
Marius Groeger           SYSGO Real-Time Solutions GmbH     mgroeger@sysgo.de
Software Engineering     Embedded and Real-Time Software    www.sysgo.de
Voice: +49-6136-9948-0   Am Pfaffenstein 14                 www.osek.de
FAX:   +49-6136-9948-10  55270 Klein-Winternheim, Germany   www.elinos.com

Re: How to configure MTD so that JFFS2 work on 7312 NandFlash?

[Jason Chan]

Hi,
    Sorry, for my post. But it works now.
However, the performance is really very slow. When I try to mount the 
Toshiba 8Mb nandflash. It takes me 3-4 minutes.
Why it takes so long.

Marius Groeger wrote:

>On Tue, 18 Jun 2002, Jason Chan wrote:
>
>>Hi all,
>>    I am trying to configure MTD NandFlash and JFFS2 on EP7312 NandFlash
>>driver.
>>However, when I try to access, it output "I/O Error".
>>But when the kernel bootup, I can see that the kernel successfully find
>>out the nandflash device. So how can I make the JFFS2 and MTD work on 7312?
>>
>
>Are you using the Cogent Evalboard (EP7312 is just the CPU)? Do you use the
>latest MTD snapshot? It worked quite well over here last time I checked.
>Unfortunately my EDB7312 is not available at the moment.
>
>Regards
>Marius
>
>-----------------------------------------------------------------------------
>Marius Groeger           SYSGO Real-Time Solutions GmbH     mgroeger@sysgo.de
>Software Engineering     Embedded and Real-Time Software    www.sysgo.de
>Voice: +49-6136-9948-0   Am Pfaffenstein 14                 www.osek.de
>FAX:   +49-6136-9948-10  55270 Klein-Winternheim, Germany   www.elinos.com
>


-- 
Best Regards,

Jason Chan
Emsoft Ltd.

Re: How to configure MTD so that JFFS2 work on 7312 NandFlash?

[Marius Groeger]

On Tue, 18 Jun 2002, Jason Chan wrote:

>     Sorry, for my post. But it works now.
> However, the performance is really very slow. When I try to mount the
> Toshiba 8Mb nandflash. It takes me 3-4 minutes.

Maybe because it has not been properly erased and formatted?!

Regards,
Marius

-----------------------------------------------------------------------------
Marius Groeger           SYSGO Real-Time Solutions GmbH     mgroeger@sysgo.de
Software Engineering     Embedded and Real-Time Software    www.sysgo.de
Voice: +49-6136-9948-0   Am Pfaffenstein 14                 www.osek.de
FAX:   +49-6136-9948-10  55270 Klein-Winternheim, Germany   www.elinos.com

Re: How to configure MTD so that JFFS2 work on 7312 NandFlash?

[Jason Chan]

I use the "eraseall" routine to erase the nand. The I use "mount 
/dev/mtdblock3 /mnt -t jffs2" to mount the flash. It takes 3-4 minutes.
After I successfully mounted, and copy some file to the flash and then 
umount. It very slow.
And it takes me 3-4 minutes even i mount that again.

What tools should I use to format and erase the flash properly?


Marius Groeger wrote:

>On Tue, 18 Jun 2002, Jason Chan wrote:
>
>>    Sorry, for my post. But it works now.
>>However, the performance is really very slow. When I try to mount the
>>Toshiba 8Mb nandflash. It takes me 3-4 minutes.
>>
>
>Maybe because it has not been properly erased and formatted?!
>
>Regards,
>Marius
>
>-----------------------------------------------------------------------------
>Marius Groeger           SYSGO Real-Time Solutions GmbH     mgroeger@sysgo.de
>Software Engineering     Embedded and Real-Time Software    www.sysgo.de
>Voice: +49-6136-9948-0   Am Pfaffenstein 14                 www.osek.de
>FAX:   +49-6136-9948-10  55270 Klein-Winternheim, Germany   www.elinos.com
>


-- 
Best Regards,

Jason Chan
Emsoft Ltd.

Re: How to configure MTD so that JFFS2 work on 7312 NandFlash?

[Thomas Gleixner]

On Tuesday, 18. June 2002 04:59, Jason Chan wrote:
> Hi all,
>     I am trying to configure MTD NandFlash and JFFS2 on EP7312 NandFlash
> driver.
> However, when I try to access, it output "I/O Error".
> But when the kernel bootup, I can see that the kernel successfully find
> out the nandflash device. So how can I make the JFFS2 and MTD work on 7312?

please read http://www.linux-mtd.infradead.org/tech/nand.html : Config 
settings


-- 
Thomas
________________________________
Thomas Gleixner - autronix automation
http://www.autronix.de gleixner@autronix.de