NAND Flash Device and JFFS2 support

Artem B. Bityuckiy dedekind at
Wed Apr 20 11:15:01 EDT 2005

On Wed, 2005-04-20 at 22:47 +0800, carl liao wrote:
Hi All,
> I back ported mtd snapshot 20050416 codes to 2.4.26 for AMD Au1200.
> The NAND device could be identified and accessed via /dev/mtd/0
> I even could mount /dev/mtdblock/0, copy file to it and umount it. But
there is
> so many warnings or ecc error messages!
> This is not normal that you see "so many warnings or ecc error
messages". Presumably you have problems with your driver.

So in order to properly use NAND Flash, how could I format and
> data to it?
> flash_eraseall -j to format.

Please, investigate carefully web site at

> I want to put Linux root file system on the NAND. Is it a right
Depends on your requirements.

JFFS2 is a generally good choice if:
* you need on-flight compression
* you need unclean-reboot tolerance
* your flash isn't large, say, not larger then 64 MiB

Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.

More information about the linux-mtd mailing list