p620 hangs instantiating rtas at 0x00000000deadbeef

[Anton Blanchard]

> This seems to fix it, but later it hangs here, maybe a different
> problem.
> 
> PID hash table entries: 4096 (order: 12, 131072 bytes)
> time_init: decrementer frequency = 601.578322 MHz
> time_init: processor frequency   = 601.600000 MHz
> ...

Thats classic console issues. Are you forcing it on the command line?
Maybe the autodetect is failing.

Anton