On Tue, 24 Jan 2023, Howard Spoelstra wrote:
> From a Mac OS guest perspective, via=cuda is needed for Mac OS 9.0.4 due to
> the 2 usb devices (mouse/kbd) issue. And for 10.0/10.1 (my guess would be
> that these suffer the same usb issue)
> The real powermac3,1 AGP has no adb.
And do these OSes run on real PowerMac3,1? If so then we likely have a bug
in USB emulation so maybe that could be fixed? In any case my patch does
not change mac99 and this should continue to work.
> via=cuda supports Mac OS 9.0.4 up to OS X 10.4. via=pmu is strictly only
> needed for Mac OS X 10.5 guest (for which the speed reported was hacked to
> 900Mhz to fool the installer), but should support all Mac OS/OS X that are
> now supported.
Since via=pmu is what should be a real machine does it run OS X >=10.2
already?
A real powermac3,1 (G4 400Mhz/AGP) runs 8.6 up to10.4.11
qemu-system-ppc status:
8.6 will not boot from CD or HD.
9.0.4* with via=pmu only supports mouse, not kbd. Needs via=cuda due to 2 usb device problem
9.1 and 9.2 with via=pmu
10.0 and 10.1 with via=pmu: no mouse and kdb. Needs via=cuda. (so also with an usb problem)
10.2 with via=pmu (but has serious graphics speed problem, also with via=cuda)
10.3 and 10.4 with via=pmu
10.5 only with via=pmu (but needs the 900Mhz speed hack).
*9.0.4 will only run with Mac OS Rom version 5.2.1 and above.
It seems via=pmu provides usb mouse first, usb kbd second.
With Mac OS 9.0.4 the second device will not work.
With 10.0 / 10.1 both usb mouse and kbd do not work.
Real hardware provides two USB buses: USB 0 and USB 1. In Qemu by default I only see one bus: USB 0 into which both mouse and kdb are plugged.
On
the real G4 the mouse and kbd are each plugged into another bus, so I
see the kbd on e.g. USB 0 and the mouse on e.g. USB 1.
With -M mac99,via=cuda one USB bus is always created. It has id "usb-bus"
We can add a second USB bus with e.g. -device pci-ohci,id=usb1 (this is the Apple USB controller).
Then add mouse and kbd to different buses with:
-device usb-mouse,bus=usb-bus.0 (attaches to first and default bus)
-device usb-kbd,bus=usb1.0 (attaches to second bus).
This then mimics what I see on real hardware. Should qemu-system-ppc by default provide the same?
> via=pmu-adb seems only needed to trick mac os server installations that
> would later run on the g3beige.
>
> To my knowledge 32 bit Linux guests all require via=pmu
> See here: https://wiki.qemu.org/Documentation/Platforms/PowerPC
That doc might need some updating. It seems to be from before pegasos2 was
added. Maybe we would be better off linking from this page to others that
are more actively maintained such as:
https://www.emaculation.com/doku.php/qemu
and
http://zero.eik.bme.hu/~balaton/qemu/amiga/
I "maintain" that page with only general information. I can link to the specific sites you mention.
or even better updating the main docs in
https://www.qemu.org/docs/master/system/ppc/powermac.html
That would have to be taken up by someone else.
Best,
Howard