[Qemu-devel] [PATCH v5 00/17] ppc/pnv: booting the kernel and reaching user space

[Cédric Le Goater]

Hello,

Here is the latest version of the ppc/pnv platform patchset. PowerNV
(as Non-Virtualized) is the "baremetal" platform using the OPAL
firmware. It runs Linux on IBM and Open Power systems and it can be
used as an hypervisor OS, to run KVM guests, or simply as a host OS.
The goal here is to add support for the baremetal platform and
possibly later also for the KVM PR guests but not for HV guests.

In v5, all the comments from v4 should have been addressed. Most of
the differences are cleanups suggested by David but there a couple of
important changes :

 - an addition of a new firmware to qemu : skiboot 5.3.7.
 - a rework of the native Interrupt Presentation Controller model
   which now uses memory subregions instead of a hash table.   
 - a removal of the Power9 LPC Controller. This is still in the plans
   but the models need a little more work.


The initial patches provide a minimal platform with some RAM to load
the ROMs : firmware, kernel and initrd. The device tree is built with
what is available at reset time. Then, comes the PnvChip object acting
as a container for other devices required to run a system. The cores
are added to each chip with some restrictions on the number and the
ids. Next is the XSCOM model, the sideband bus which gives controls to
all the units in the POWER8 chip, the LPC controller for the console,
the native interrupt controller and the PSI HB model to handle the
external interrupt.


The next step should be IPMI support which adds a BT device on the ISA
bus and some device tree extensions to read sensors and FRUs. This is
relatively straight forward and most of the IPMI code has been
discussed already on the list. Then should come a PHB3 model to
include some PCI devices. This is big and it needs a few helpers in
the PCI core.

If you feel adventurous, you can grab kernel and rootfs images :

  
https://openpower.xyz/job/openpower-op-build/distro=ubuntu,target=palmetto/lastSuccessfulBuild/artifact/images/zImage.epapr
  
https://openpower.xyz/job/openpower-op-build/distro=ubuntu,target=palmetto/lastSuccessfulBuild/artifact/images/rootfs.cpio.xz

and give it a try. The full patchset is available here :

   https://github.com/legoater/qemu/commits/powernv-ipmi-2.8

This is a wip branch, which I stabilize when the qemu version, on
which it is based, is released.

Thanks,

C. 

Benjamin Herrenschmidt (5):
  ppc/pnv: add skeleton PowerNV platform
  ppc/pnv: add a LPC controller
  ppc/pnv: Add cut down PSI bridge model and hookup external interrupt
  ppc/pnv: Add OCC model stub with interrupt support
  ppc/pnv: Add Naples chip support for LPC interrupts

Cédric Le Goater (12):
  ppc: add skiboot firmware for the pnv platform
  ppc/pnv: add a PnvChip object
  ppc/pnv: add a core mask to PnvChip
  ppc/pnv: add a PIR handler to PnvChip
  ppc/pnv: add a PnvCore object
  ppc/pnv: add XSCOM infrastructure
  ppc/pnv: add XSCOM handlers to PnvCore
  ppc/pnv: add a ISA bus
  ppc/xics: Add "native" XICS subclass
  ppc/pnv: add a XICS native to each PowerNV chip
  ppc/xics: add a xics_get_cpu_index_by_pir helper
  ppc/xics: introduce a helper to insert a new ics

 .gitmodules                       |   3 +
 MAINTAINERS                       |   1 +
 Makefile                          |   2 +-
 default-configs/ppc64-softmmu.mak |   4 +-
 hw/intc/Makefile.objs             |   1 +
 hw/intc/xics.c                    |   6 +
 hw/intc/xics_native.c             | 323 ++++++++++++++
 hw/ppc/Makefile.objs              |   2 +
 hw/ppc/pnv.c                      | 888 ++++++++++++++++++++++++++++++++++++++
 hw/ppc/pnv_core.c                 | 248 +++++++++++
 hw/ppc/pnv_lpc.c                  | 514 ++++++++++++++++++++++
 hw/ppc/pnv_occ.c                  | 135 ++++++
 hw/ppc/pnv_psi.c                  | 615 ++++++++++++++++++++++++++
 hw/ppc/pnv_xscom.c                | 277 ++++++++++++
 include/hw/ppc/pnv.h              | 159 +++++++
 include/hw/ppc/pnv_core.h         |  50 +++
 include/hw/ppc/pnv_lpc.h          |  76 ++++
 include/hw/ppc/pnv_occ.h          |  38 ++
 include/hw/ppc/pnv_psi.h          |  64 +++
 include/hw/ppc/pnv_xscom.h        |  84 ++++
 include/hw/ppc/xics.h             |  26 ++
 pc-bios/README                    |   5 +
 pc-bios/skiboot.lid               | Bin 0 -> 983893 bytes
 roms/Makefile                     |   8 +-
 roms/skiboot                      |   1 +
 25 files changed, 3527 insertions(+), 3 deletions(-)
 create mode 100644 hw/intc/xics_native.c
 create mode 100644 hw/ppc/pnv.c
 create mode 100644 hw/ppc/pnv_core.c
 create mode 100644 hw/ppc/pnv_lpc.c
 create mode 100644 hw/ppc/pnv_occ.c
 create mode 100644 hw/ppc/pnv_psi.c
 create mode 100644 hw/ppc/pnv_xscom.c
 create mode 100644 include/hw/ppc/pnv.h
 create mode 100644 include/hw/ppc/pnv_core.h
 create mode 100644 include/hw/ppc/pnv_lpc.h
 create mode 100644 include/hw/ppc/pnv_occ.h
 create mode 100644 include/hw/ppc/pnv_psi.h
 create mode 100644 include/hw/ppc/pnv_xscom.h
 create mode 100644 pc-bios/skiboot.lid
 create mode 160000 roms/skiboot

-- 
2.7.4