iMac G5 available for testing

Chris L. Mason clmason at
Thu Oct 7 09:12:04 EST 2004

On Thu, 07 Oct 2004 08:36:09 +1000, Benjamin Herrenschmidt
<benh at> wrote:
> On Thu, 2004-10-07 at 00:58, Chris L. Mason wrote:
> > Hi all,
> >
> > I have a new iMac G5/1.8 GHz/17-inch system that I would like to make
> > available for testing/debugging.  If you have anything you would like
> > me to try booting, checking in open firmware, etc., let me know.
> We have ordered one here. It will require some reverse engineering work
> since it's a new rev of the chipset and the good old PMU chip was finally,
> years later, replaced by a new "SMU" that is totally undocumented of course...

Ah, wonderful.  :)  The good news is that with tgall's latest debug
kernel, I do at least get to boot as far the ata drive detection
before it freezes, although it gets kernel error too right after the
tux logo.  Here's an image of my boot attempt:

(Sorry for the bad quality of the image)

Segher also told me how to use the romgrabber.  I have a copy up at:


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