[U-Boot-Users] Uboot Into Internal Rom

[U-Boot-Users] Uboot Into Internal Rom

[Erick Castillo]

The AT91RM9200 Development Kits by default have a startup program in the
internal 128k of rom. Is there any way to place U-Boot in the internal ROM?
Basically, how do I replace the default first level boot on the AT91RM9200
chip?

--Erick

[U-Boot-Users] Uboot Into Internal Rom

[Lars Munch]

On Thu, Jul 22, 2004 at 01:36:31AM -0700, Erick Castillo wrote:
> The AT91RM9200 Development Kits by default have a startup program in the
> internal 128k of rom. Is there any way to place U-Boot in the internal ROM?
> Basically, how do I replace the default first level boot on the AT91RM9200
> chip?

AFAIK, you cant, but you can override the internal boot rom by
setting BSM high during reset. THere should be at resistor R159 to
change the bahaviour.

Please note that the AT91RM9200-DK port is not a full port and depends
on Atmels loader.bin is placed first in the flash. The u-boot AT91RM9200-DK
port do no initialize cpu, flash or sdram.

-- Lars Munch

[U-Boot-Users] Uboot Into Internal Rom

[Friedrich, Lars]

> The AT91RM9200 Development Kits by default have a startup
> program in the internal 128k of rom. Is there any way to
> place U-Boot in the internal ROM?

What do you have in mind? A software based ROM to RAM converter?

> Basically, how do I replace the default first level boot on
> the AT91RM9200 chip?

You don't replace anything in a ROM chip. You manufacture them with
the contents you want to have them. So you'll need to ask ATMEL
if they manufacture a chip for you.

Best regards,
Lars Friedrich

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