Re: Missing dimm-info properties in openbios ?

[BALATON Zoltan]

On Fri, 21 Mar 2025, Andrew Randrianasulu wrote:
> пт, 21 мар. 2025 г., 03:33 BALATON Zoltan <balaton@eik.bme.hu>:
> > On Fri, 21 Mar 2025, Andrew Randrianasulu wrote:
> > > чт, 20 мар. 2025 г., 23:41 BALATON Zoltan <balaton@eik.bme.hu>:
> > > > On Thu, 20 Mar 2025, Andrew Randrianasulu wrote:
> > > > > Will look at ATA situation, some said SATA was more likely to work on
> > > > real
> > > > > machines.
> > > >
> > > > I think we've tested that too at some point. There's -device sii3112
> > that
> > > > I've added for sam460ex and AmigaOS but this is a common chip also found
> > > > on some Mac compatible SATA cards. You just need the FCode ROM from one
> > of
> > > > those, which were available in updates to these cards. There was one
> > from
> > > > SeriTek and one from WiebeSATA3112 and I think at least one of those
> > > > worked with my patches to OpenBIOS to run the ROM so it should work with
> > > > real OpenFirmware too. Although that can be a workaround, it would still
> > > > be interesting to know why the on board IDE does not work. Maybe it
> > > > emulates the IDE found on the G4 but the G3 had something different?
> > There
> > > > were names like Keylargo and O'Hare but I don't remember what these were
> > > > exactly.
> > >
> > > according to dppc files ...
> > https://github.com/dingusdev/dingusppc/blob/master/devices/ioctrl/heathrow.cpp
> > >
> > https://github.com/dingusdev/dingusppc/blob/master/devices/ioctrl/macio.h
> > > Heathrow , O'hare, GrandCentral all revisions of macio chip ....
> > >
> > > /** PCI device IDs for various MacIO ASICs. */
> > > enum {
> > >    MIO_DEV_ID_GRANDCENTRAL = 0x0002,
> > >    MIO_DEV_ID_OHARE        = 0x0007,
> > >    MIO_DEV_ID_HEATHROW     = 0x0010,
> > >    MIO_DEV_ID_PADDINGTON   = 0x0017,
> > > };
> >
> > In QEMU macio-oldworld sets PCI device_id to PCI_DEVICE_ID_APPLE_343S1201
> > which is 0x10 so seems to match Heathrow. Does that match with what a
> > beige G3 should have?
>
>
> well, according to this file
>
> https://github.com/dingusdev/dingusppc/blob/master/machines/machinegossamer.cpp
>
> there are TWO types of G3 BEIGE
>
> Power Macintosh G3 (Beige) Tower
> Power Macintosh G3 (Beige) Desktop

They are probably very similar, maybe the Tower has more expansion 
possibilities but the basic devices are the same. They have different 
machine ids I think and the ROM may behave a bit differently based on 
that.

> hm, default storage device here seems to be ATA ....
>
> Also, I was wrong about Ethernet on those ...
> https://github.com/dingusdev/dingusppc/blob/master/zdocs/developers/bmac.md
>
> =====
>
> BMac aka BigMac is an Ethernet media access controller cell integrated in
> the Heathrow and Paddington I/O controllers. According to a former Apple
> employee, BMac has been licensed from Sun. It's therefore not surprising
> that it has a lot in common with the Sun "Happy Meal" (HME) controller.
> BMac based Ethernet HW
> <https://github.com/dingusdev/dingusppc/blob/master/zdocs/developers/bmac.md#bmac-based-ethernet-hw>
>
> There are three BMac based HW configurations:
>
>   - BMac in a Heathrow I/O + LXT907 PHY used in Power Macintosh G3 (Old
>   World)
>   - BMac+ in a Paddington I/O + LXT970 aka ST10040 PHY in Power Macintosh
>   Blue & White (New World)
>   - BMac+ in a Paddington I/O + DP83843 PHY in a Bronze Keyboard PowerBook
>   G3
>
> Documentation
> <https://github.com/dingusdev/dingusppc/blob/master/zdocs/developers/bmac.md#documentation>
>
> No official documentation has surfaced so far. Fortunately, the official
> source code as well as the STP2002 datasheet provide enough information on
> the BMac device.
>
>   - Apple source code:
>   https://github.com/apple-oss-distributions/AppleBMacEthernet
>   - STP2002 datasheet: https://people.freebsd.org/~wpaul/STP2002QFP-UG.pdf
>
> ===== quote end ====

We have sungem in QEMU which is newer but maybe similar but I don't know 
if the ROM can support that. But it should have appropriate FCode ROMs 
somewhere that should work with OpenFirmware.

> and yea, some people updated their G3 cpus to G4 in those machines, so G4
> in g3beige is valid combo ..  not sure about real memory ceiling .. some
> said 1.5 Gb ?

I think real machine has 3 memory slots and the largest module they 
support was 512MB so maybe it comes from that.

Regards,
BALATON Zoltan