Re: Motorola PowerStack II / Estrella 300 and options FIRMWORKSBUGS

[Jochen Kunz <jkunz%unixag-kl.fh-kl.de@localhost>]

On 2002.11.06 00:52 Wolfgang Solfrank wrote:

> Well, I assumed that you tried to step over the mtsrin instruction via
> the OFW debugger.  If you discovered the hang via some other means
> (which I'd wonder how actually), I'd need more data.
I placed printf(9)s before and after the instruction. The printf(9)
before was the last executed. The OFW debugger gets unusable at an
earlier point of booting. Then I placed a Debugger(); call before the
mtsrin. If I singlestep over the mtsrin it hangs. Looks to me like the
kernel is already running in virtual adressing mode and is changeing the
mapping it is already using, thus sendig it self to lala-land. I should
make an exact analyze of the register values and CPU / MMU state instead
of wild guessing, but as I need some sleep right now I will interrupt
this till tomorrow^Wtoday evening. ;-) 
-- 



tschüß,
         Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/