[U-Boot-Users] u-boot and bdi2000

Dan Malek dan at embeddededge.com
Sat May 8 00:06:05 CEST 2004

On May 7, 2004, at 5:32 PM, Kate Alhola wrote:

> ........The problem is to get it working
> with bdi2000.  There is something that i did wrong with bdi2000 
> configuration
> and i try figure out what.

Check to make sure the start up code isn't writing over some of the
processor debug registers.  Debuggers get upset when they set
a particular mode and then you come behind them in software
and mess it up :-)  I've seen similar things happen with other
processors, and this has been the cause.  It is proper and necessary
to have a boot rom initialize these registers for normal operation,
but not when you are trying to use a debugger.  If you take out
such initialization for debugging, don't forget to put it back when
you ship the system! :-)

	-- Dan

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