Ebony development board

Ebony development board

[Zoltan HERPAI]

Hi,

I've recently got an Ebony board (440GP) with the original bootloader 
(440GP 1.18 ROM Monitor) which I would like to replace with U-boot. Is 
there a way to boot an U-boot image via TFTP to replace the bootloader, 
or is it possible only with using a JTAG? I've googled through the 
mailing list, but most of the related hits are dated back in 2004-2005, 
they say no, one have to use JTAG, but some time passed since then, and 
I would like to know if there is a way for this.

Thanks in advance,
Zoltan HERPAI

Re: Ebony development board

[Stefan Roese]

Hi Zoltan,

On Saturday 09 February 2008, Zoltan HERPAI wrote:
> I've recently got an Ebony board (440GP) with the original bootloader
> (440GP 1.18 ROM Monitor) which I would like to replace with U-boot. Is
> there a way to boot an U-boot image via TFTP to replace the bootloader,
> or is it possible only with using a JTAG? I've googled through the
> mailing list, but most of the related hits are dated back in 2004-2005,
> they say no, one have to use JTAG, but some time passed since then, and
> I would like to know if there is a way for this.

Does the original ROM monitor support writing to onboard FLASH? If yes, it 
should be possible.

Best regards,
Stefan

Re: Ebony development board

[Josh Boyer]

On Mon, 11 Feb 2008 07:20:12 +0100
Stefan Roese <sr@denx.de> wrote:

> Hi Zoltan,
> 
> On Saturday 09 February 2008, Zoltan HERPAI wrote:
> > I've recently got an Ebony board (440GP) with the original bootloader
> > (440GP 1.18 ROM Monitor) which I would like to replace with U-boot. Is
> > there a way to boot an U-boot image via TFTP to replace the bootloader,
> > or is it possible only with using a JTAG? I've googled through the
> > mailing list, but most of the related hits are dated back in 2004-2005,
> > they say no, one have to use JTAG, but some time passed since then, and
> > I would like to know if there is a way for this.
> 
> Does the original ROM monitor support writing to onboard FLASH? If yes, it 
> should be possible.

It doesn't.  Theoretically, you can boot Linux and use MTD on the flash
to load U-Boot.  I wouldn't recommend it without a JTAG debugger around
to fix things in case they get screwed up.

josh