[U-Boot] UBIFS fails on SheevaPlug

[Dimax]

I remember I have unbricked sheevaplug with USB key.
But I'm still not sure if effort is not useless as I see no conclusion
about u-boot ability to recover UBIFS partition (at least to try).
Can anybody tell it for sure?


On Mon, Oct 29, 2012 at 2:15 PM, Prafulla Wadaskar <prafulla at marvell.com>wrote:

>
>
> > -----Original Message-----
> > From: u-boot-bounces at lists.denx.de [mailto:u-boot-
> > bounces at lists.denx.de] On Behalf Of Andreas Bießmann
> > Sent: 29 October 2012 14:41
> > To: Dimax
> > Cc: Marek Vasut; u-boot at lists.denx.de
> > Subject: Re: [U-Boot] UBIFS fails on SheevaPlug
> >
> > Dear Dimax,
> >
> > please do not TOFU.
> >
> > On 29.10.2012 09:50, Dimax wrote:
> > > Hi,
> > > What if I compile a new u-boot but to try it I will load and flash
> > new
> > > created image after original u-boot and will run it from withing
> > > original reboot manually just pointing a new image address? Can it
> > work?
> >
> > well, you mean to run a u-boot out of a running u-boot?
> > U-Boot is not designed to do so. But some devices may allow you to
>
> It will not work.
>
> > just
> > run a newer u-boot from a running one (at91;). You need to know that
> > u-boot set up your SDRAM timings which destroys the content of the
> > DRAM.
> > So if your new u-boot is located there it can not be executed.
> > I dunno if the kirkwood can do so, but I think they can not. You will
> > need
> > a) a JTAG
> > b) another boot device, for example USB, MMC, whichever device the
> > kirwood SoC can read from its ROM code (I do not know)
> > to de-brick it.
> >
> > Please ask some kirkwood specialist or google, there are a lot of
> > sheevaplug hackers out there, one of them may be able to help you
> > here.
>
> You will need a JTAG key (amontec on any other) and OpenOCD s/w tool.
> Then you can build and test your code on Kirkwood w/o flashing on the
> device (i.e. running from RAM)
>
> You may look for developer guidelines on the google or plugcomputer forum.
>
> Regards...
> Prafulla . . .
>