Re: [Qemu-devel] [6128] Use OpenBIOS for g3bw machine

[Aurelien Jarno]

On Sun, Dec 28, 2008 at 03:08:47PM +0200, Blue Swirl wrote:
> On 12/28/08, Miklos Vajna <address@hidden> wrote:
> > Hi,
> >
> >
> >  On Wed, Dec 24, 2008 at 08:23:52PM +0000, Blue Swirl <address@hidden> 
> > wrote:
> >  > Revision: 6128
> >  >           http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6128
> >  > Author:   blueswir1
> >  > Date:     2008-12-24 20:23:51 +0000 (Wed, 24 Dec 2008)
> >  >
> >  > Log Message:
> >  > -----------
> >  > Use OpenBIOS for g3bw machine
> >  >
> >  > Modified Paths:
> >  > --------------
> >  >     trunk/hw/ppc_mac.h
> >  >     trunk/hw/ppc_oldworld.c
> >  >     trunk/qemu-doc.texi
> >  >
> >  > Modified: trunk/hw/ppc_mac.h
> >  > ===================================================================
> >  > --- trunk/hw/ppc_mac.h        2008-12-24 20:21:18 UTC (rev 6127)
> >  > +++ trunk/hw/ppc_mac.h        2008-12-24 20:23:51 UTC (rev 6128)
> >  > @@ -31,6 +31,8 @@
> >  >  #define BIOS_FILENAME "ppc_rom.bin"
> >  >  #define VGABIOS_FILENAME "video.x"
> >  >  #define NVRAM_SIZE        0x2000
> >  > +#define PROM_FILENAME    "openbios-ppc32"
> >  > +#define PROM_ADDR         0xfff00000
> >
> >
> > Is it by accident that the file 'openbios-ppc32' was not added to the
> >  repo?
> 
> The development of OpenBIOS/PPC has been rapid, the added version
> would soon become obsolete. Currently OpenBIOS can boot yaboot from
> some install CD images but Linux hangs very early.
> 

By the way, I wonder if we will need a different BIOS for 32- and 
64-bit, as a the first thing that a 64-bit kernel does is switching the
CPU to 64-bit mode. Also contrary to Sparc, a 32-bit code works
unchanged on a 64-bit CPU.

If it is confirmed, we can probably rename openbios-ppc32 into
openbios-ppc.

-- 
  .''`.  Aurelien Jarno             | GPG: 1024D/F1BCDB73
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