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RE: ROMRAM on EB55
- From: Scott Dattalo <scott at dattalo dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Tue, 16 Dec 2003 09:02:55 -0800 (PST)
- Subject: RE: [ECOS] ROMRAM on EB55
On Tue, 16 Dec 2003, Alan Bowman wrote:
> Thanks. I've tried building the redboot image myself, and I am getting
> the same problem, i.e. when I boot into it, I see no output from
> Hyperterminal. I'm not sure where best to start debugging a ROM(RAM)
> image. Any suggestions? I don't mind using Redboot from ROM or ROMRAM,
> but I want my application to run as a ROMRAM app, and I can't get that
> to work either, so I thought that Redboot would be a better starting
> point.
Alan,
Is it possible to connect a JTAG debugger like a Wiggler to your board and
single step through the startup sequence? I know that I had similar
problems with ROMRAM for an EB40-type system. It turned out that in my
case the memory map of the board I was debugging was slightly different
than Atmel's EB40 board. I discovered that in the startup code
(hal_platform_setup.h) addresses were hardcoded for the EB40. This of
course caused the ROMRAM image to fail.
Scott
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