[Qemu-devel] [RFC v2 0/7] ppc/prep: add IBM RS/6000 43p machine

[Hervé Poussineau]

Hi,

This patchset (sent as RFC) adds an emulation of the IBM RS/6000 43p, also 
known as 7248.

Andreas did some preliminary patches for OpenBIOS to support PReP machines, 
available at
git://repo.or.cz/openbios/afaerber.git branch prep.
43p emulation has been tested with this firmware, and also with the official 
firmware,
named P93H1904.IMG.

Command line may look like
qemu-system-ppc -M 43p -readconfig ibm_43p.cfg
-device ide-hd,drive=hd0 -drive if=none,id=hd0,cache=writeback,file="hda.qcow2"

Changes RFC v1 -> RFC v2:
- rebased on master
- works with OpenBIOS
- rework on m48t59 patches
- remove rs6000 debug port emulation (not strictly required)
- checkpatch.pl doesn't complain anymore

Known bugs/missing parts:
- incomplete MPC105 (PCI host bridge) emulation (memory controller)
- no video card (should be a S3)
- QEMU can't change endianness at runtime

OpenBIOS status:
- detects CPU and memory, then freezes with a "Dictionary space overflow"

Official firmware status:
- can boot from a IDE hard disk containing a PReP boot partition
- can't boot from IDE cdroms (overlapping commands not supported by QEMU IDE 
emulation)
- can't boot from floppies (READ commands are issued, but it seems completion 
is ignored)
- can't boot from network (detects the netcard, but doesn't use it)
- needs a hack to m48t59 device to work (patch 7/7)

Please comment.

Regards,

Hervé

Hervé Poussineau (7):
  pci: add MPC105 PCI host bridge emulation
  m48t59: move ISA ports registration to QOM constructor
  m48t59: register a QOM type for each nvram type we support
  m48t59: use DeviceState in public functions
  prep: add IBM RS/6000 7248 (43p) machine emulation
  prep: QOM'ify System I/O
  m48t59: hack(?) to make it work on IBM 43p

 default-configs/ppc-softmmu.mak |    1 +
 docs/ibm_43p.cfg                |   42 ++++
 hw/pci-host/Makefile.objs       |    1 +
 hw/pci-host/mpc105.c            |  487 +++++++++++++++++++++++++++++++++++++++
 hw/ppc/Makefile.objs            |    1 +
 hw/ppc/prep.c                   |  223 +++++++++++++++++-
 hw/ppc/prep_systemio.c          |  290 +++++++++++++++++++++++
 hw/sparc/sun4m.c                |    7 +-
 hw/sparc64/sun4u.c              |    6 +-
 hw/timer/m48t59.c               |  257 +++++++++++++++------
 include/hw/pci/pci_ids.h        |    1 +
 include/hw/timer/m48t59.h       |   14 +-
 trace-events                    |   11 +
 13 files changed, 1248 insertions(+), 93 deletions(-)
 create mode 100644 docs/ibm_43p.cfg
 create mode 100644 hw/pci-host/mpc105.c
 create mode 100644 hw/ppc/prep_systemio.c

-- 
1.7.10.4