On Thu, 27 Jan 2022, Mark Cave-Ayland wrote:
On 27/01/2022 20:11, Fabiano Rosas wrote:
Changes from v1:
- Restored the 'sc 1' support to avoid breaking the pegasos2 machine.
I tested this version in the G4 with the following OSes:
- Linux 5.15 (5.16 seems to be broken, even with master)
- FreeBSD 13
- Mac OS 9.2
- Mac OS Darwin 6.0
- Mac OS X 10.4
- MorphOS 3.15 (-M pegasos2 and -M mac99,via=pmu)
Based on legoater/ppc-7.0
v1:
https://lore.kernel.org/r/20220126164200.1048677-1-faro...@linux.ibm.com
Fabiano Rosas (8):
target/ppc: Introduce powerpc_excp_74xx
target/ppc: Simplify powerpc_excp_74xx
target/ppc: 74xx: Machine Check exception cleanup
target/ppc: 74xx: External interrupt cleanup
target/ppc: 74xx: Program exception cleanup
target/ppc: 74xx: System Call exception cleanup
target/ppc: 74xx: System Reset interrupt cleanup
target/ppc: 74xx: Set SRRs directly in exception code
target/ppc/excp_helper.c | 197 +++++++++++++++++++++++++++++++++++++++
1 file changed, 197 insertions(+)
That certainly covers a good range MacOS images so I'm happy to give:
Acked-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
Just out of curiosity have you tried booting MacOS 9.2 under KVM-PR? Last
time I tried on my G4 Mac Mini here, OS X worked fine but 9.2 failed early
after jumping into the 68k emulator. Unfortunately due to the split real mode
(see
https://github.com/torvalds/linux/commit/c01e3f66cd5cdc1f727f4c7b0c10b3e3bdb91ba7
where MSR_IR != MSR_DR) I can't step through with QEMU's gdbstub to see what
is going wrong...
Can't comment on that as I don't have PPC hardware but in case you don't
know it yet, check out this blog entry (and its part 2):
https://www.talospace.com/2018/08/making-your-talos-ii-into-power-mac.html
which talks about running KVM-PR on POWER9 and why MacOS may not work at
least with newer POWER CPUs. But if you run G4 code on G4 it may be a
different problem but still an interesting article and may give you some
ideas.
Regards,
BALATON Zoltan
