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Re: question about EB55


----- Original Message -----
From: Roman Jordan <RomanJordan@gmx.de>
To: Ecos Discuss <ecos-discuss@sources.redhat.com>
Sent: Sunday, August 03, 2003 1:57 PM
Subject: [ECOS] question about EB55


> Hi,
> i have downloaded the ecos image for the atmel eb55 board. The ram
> version is running fine. But i have a question about flashing the rom
> version of redboot. I do not want to delete the angel bootloader.
> If i read the manual at page 93 (pdf page 195) i read the following.
> Download the ram version, switch the jumper to position user. This will
> invert the address line A20. In my opinion angel is then located at
> 0x0110.0000. The free flash space is located at 0x0100.0000. I hope this
> is correct.
> Now i load the rom-srec file to ram. After this the manual says, write
> the downloaded rom image to adresse 0x0110.0000. Is this really correct?
> The jumper is already in the user position. I think there is angel now.
>
> I think i have to write the rom image at the address 0x0110.0000 and
> then switch the jumper jp1 to user position.


This procedure works for the EB40A and the EB55. I have used it and it works
on both boards.

http://sources.redhat.com/ecos/docs-latest/ref/at91.html

The jumper should be in STD mode the whole time because you need angle to
communicate with the board. Switch jumper to USER and reboot once the flash
is programmed with redboot.ROM.

Greg




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