[U-Boot] UBIFS fails on SheevaPlug

[Prafulla Wadaskar]

> -----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 . . .