NAND device: all blocks bad after restart, how to recover?

[Lars Michael]

--- On Thu, 10/3/11, Artem Bityutskiy <dedekind1 at gmail.com> wrote:

> From: Artem Bityutskiy <dedekind1 at gmail.com>
> Subject: Re: NAND device: all blocks bad after restart, how to recover?
> To: "Lars Michael" <lars.michael at yahoo.com>
> Cc: linux-mtd at lists.infradead.org
> Date: Thursday, 10 March, 2011, 14:06
> On Wed, 2011-03-09 at 08:39 -0800,
> Lars Michael wrote:
> > Hello,
> > 
> > I repost this issue, with correct subject and hope to
> have some
> > feedback. After working with getting UBI images
> mounted in Linux (it did
> > work for a sec!) the NAND device suddenly went totally
> bad after a system
> > restart! So all blocks are reported bad and the mtd is
> no longer visible
> > in Linux.
> 
> So do mtd tests work fine with your flash?
> 
> >  Before it had just a few bad blocks.
> 

We investigated more and have found that the FlexBus on the Coldfire can cause problems for the NAND device. When the FlexBus devices are removed
the NAND device comes back to life, and is again accessible. So now I 
can get back to the UBI part of the project :-)

Regards,
- Lars