The 970fx is supported, which happens to be the default CPU for -M mac99.
The IBM JS20 had a dual 970 though, and -cpu 970 leads to a busy loop:
>> Unknown cpu (pvr 390000), freezing!
Add a definition for the 970.
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@934 f158a5a8-5612-0410-a976-696ce0be7e32