In message EFEAIMDCOOOHIEPHDNFJCEEJFFAA.stefan.roese@esd-electronics.com you wrote:
The EVPR is set to zero by U-Boot since the interrupts (exceptions) are enabled when U-Boot is running from SDRAM and _not_ from flash anymore (Wolfgang, please correct me, if I am wrong here). The exception vectors are
This is correct.
The interrupt management for PPC4xx in U-Boot is OK! We have several different boards with IBM PPC's (PPC405CR, PPC405GP, PPC405GPr) running without any problems here (timer and ethernet interrupts working).
Same here.
Are you sure, that the interrupts are causing this "unstable" behaviour? I would suspect, that other exceptions are responsible for this errors?
Right, and as usual I would suspect SDRAM initialization first.
Thanks, Stefan!
Wolfgang Denk