Re: [Qemu-devel] Small powerpc system emulation problem with linux

[Aurelien Jarno <aurelien@aurel32.net>]

On Wed, Jan 14, 2009 at 06:08:38PM -0500, Lennart Sorensen wrote:
> On Wed, Jan 14, 2009 at 05:37:16PM +0100, Aurelien Jarno wrote:
> > First of all, please retry with the current SVN, a lot of things have
> > been fixed.
> 
> But it has only been a couple of days.  :)

A lot of changes have been done today...

> > This is a known problem, looks like there is a problem with IO ports. You
> > can workaround the problem by using an other card, like e1000.
> 
> Or using 2.6.26 worked too.  Maybe 2.6.18 did something wrong.

No, just that the 2.6.26 has both a 8139too and 8139cp driver. The
8139cp is able to use the card, given it only uses MMIO.

> > The machine that is emulated is actually a g3beige, that is an OldWorld
> > machine. Installing quik on such machine is correct. Note that the
> > current version of debian installer installs a totally buggy quik.conf
> > file. It has to be fixed manually.
> 
> Ehm, linux kernel detected it as a g3blue&white.  I wonder why it would
> misdetect it that way.

Because of a bug in OpenBIOS.

> > Quik is now working correctly with the current SVN.
> 
> Oh OK.  I will try updating and then redoing the install with quik.
> 
> > No, this is actually normal, as an OldWorld machine is emulated.
> 
> Yeah so I noticed.  Still made me confused since the machine type
> detected by the linux kernel is supposed to be newworld, but it also
> detects the machine as oldworld.  So qemu bug or linux kernel bug?

OpenBIOS bug, already fixed in the current SVN.

> > The machine in ppc_oldworld.c is an OldWorld machine. There has been
> > some mistakes in both OpenBIOS and QEMU, that should now be fixed.
> 
> OK, I will try an update and see what happens.
> 
> > We plan to emulated a NewWorld machine using ppc_chrp.c as a basis when
> > all the problem with the OldWorld machine have been solved.
> 
> Oh OK.  Given the progress on ppc emulation since 0.9.1, I am sure it
> won't be long before that is all working very well.
> 

-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
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