On 03/28/2013 12:46 PM, Alexander Graf wrote: > > On 28.03.2013, at 12:42, Fabien Chouteau wrote: > >> >> While working on a patch to remove env->hreset_excp_prefix, I'm looking >> at which instruction should be the fetched first at power-on. I'm lost >> in all the PPC version and configuration, can anyone (Alex :) can help >> me with this mess? > > Phew - I'd say just keep the targets you don't know exactly as they are :). > That way you at least don't break anything that wasn't broken before. > > For the targets where you do know better (like 7x0), change its behavior to > be correct according to the respective spec. >
Here's what I found in the UM of almost all the cores supported by QEMU: Every CPU should start at the hreset address (i.e. excp_prefix + 0x100). However, some cores don't have a hreset exception (4xx and Book E (e200, e500)), those cores start at 0xFFFF_FFFC. -- Fabien Chouteau
