Hello,
Here is a new version addressing all comments from v2 plus a couple of
important changes :
- QOM'ification of all the models. should be clean.
- some P9 basic support
- PnvChip has its own routine to populate the device tree
- rework of the XSCOM model to use an address space. see below.
- LPC controller support and an ISA bus for a console
The patchset is more or less organised the same way, the initial patch
provides 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 a proposal for a new model of XSCOM, the sideband bus which
gives controls to all the units in the POWER8 chip. It now uses a
specific address space to dispatch the accesses on the different chips
but clearly, I am not satisfied with it. I either got it all wrong or
the memory region do not permit what we are trying to achieve. Please
check out patch 7, I took ownership of the model and did my grumbling
there.
Last is an initial LPC controller, which gives us a console ! The
PowerNV platform now has enough support to start skiboot and see what
is happening. Linux also loads but stops quite early in xmon when
trying to setup the irqs :
[ 0.000000] NR_IRQS:512 nr_irqs:512 16
[ 0.000000] XICS: Cannot find a Presentation Controller !
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: at arch/powerpc/platforms/powernv/setup.c:81
This is the next step : XICS native and support for real CPU
ids. There are some initial patches and hacks for that in my dev
branch. If you feel adventurous, you can give it a try here :
https://github.com/legoater/qemu/commits/powernv-ipmi-2.8
Just add on the command line :
-smp cores=8
You can grab skiboot and kernel images here :
https://openpower.xyz/job/openpower-op-build/distro=ubuntu,target=palmetto/lastSuccessfulBuild/artifact/images/skiboot.lid
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
Thanks,
C.
Benjamin Herrenschmidt (2):
ppc/pnv: add skeleton PowerNV platform
ppc/pnv: Add LPC controller and RTC
Cédric Le Goater (8):
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
monitor: fix crash for platforms without a CPU 0
ppc/pnv: Add XSCOM infrastructure
ppc/pnv: add a XScomDevice to PnvCore
ppc/pnv: add a ISA bus
default-configs/ppc64-softmmu.mak | 1 +
hw/ppc/Makefile.objs | 2 +
hw/ppc/pnv.c | 804 ++++++++++++++++++++++++++++++++++++++
hw/ppc/pnv_core.c | 239 +++++++++++
hw/ppc/pnv_lpc.c | 455 +++++++++++++++++++++
hw/ppc/pnv_xscom.c | 308 +++++++++++++++
include/hw/ppc/pnv.h | 134 +++++++
include/hw/ppc/pnv_core.h | 50 +++
include/hw/ppc/pnv_lpc.h | 63 +++
include/hw/ppc/pnv_xscom.h | 96 +++++
monitor.c | 2 +-
11 files changed, 2153 insertions(+), 1 deletion(-)
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_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_xscom.h
--
2.7.4
