Re: [ECOS] Debugging Redboot on IXP425

[Andrew Lunn <andrew at lunn dot ch>]

On Tue, Feb 28, 2006 at 12:16:04PM +1100, Stewart Heitmann wrote:
> I have built a redboot image that runs fine on my IXDPG425 (Montejade)
> eval board, but it locks up when I run it on my custom hardware.
> I get no redboot console at all.
> 
> My custom hardware is based on the IXDPG425 but with some changes.
> It is a prototype board and could have hardware faults, but I have
> verified that the FLASH and SDRAM accesses are OK and the processor
> is indeed running.
> 
> I can step through the program using Macraigor OCD Commander and my
> Wiggler/Raven JTAG debuggers, and reboot starts up ok but eventually
> (at some point far into the program) it just runs away and never
> responds to the debugger again (except to processor reset)
> 
> Manually stepping through the program is painfully slow, and the OCD
> Commander wont allow me to halt the program once I given it the "go"
> instruction. Neither does it support breakpoints.

It cannot use software breakpoints since it is running from
FLASH. Have you tried hardware breakpoints?

        Andrew

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