Re: [microblaze-uclinux] More details of my problem - uClinux freezestoo

[Luca Pizzamiglio <pizzamiglio@xxxxxxxxxx>]

John Williams wrote:
> Ivan's problem is strange, the character corruption in the output 
> suggests something like rogue memory writes, which can be from problems 
> with link scripts, bootmem reserves at startup, all sorts of things. :-(

I and Roberto Farina had a similar problem with DDR memories; first of 
all, check the C_CLKIN_PERIOD of yor dcm modules in EDK project: we use 
15.15 because our board avails a 100MHz clock.

Our kernel freeze during Bogomips evaluation: cache is mapped into DDR 
and we set kernel to use it.
When we unset the use of cache, it runs.

> It is possible to single step the kernel with mb-gdb, which can be very 
> useful in these situations.  I've been meaning to write up for a while, 
> maybe this will spur me on to do so.
> 
> John

When I use mb-gdb, single step boot works, but continue to breakpoint 
execution not. Why? It's a kernel problem?

Regards,
Pizza

-----------------------------------------
Luca Pizzamiglio
CEFRIEL - Embedded Systems Design Unit
Via Fucini, 2 - 20133 Milano
e-mail pizzamiglio@cefriel.it
Tel.   02 2395 4236
ICQ    5046978
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