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docs/system: Extend PPC section
This moves the current documentation in files specific to each platform family. PowerNV machine is updated, the other machines need to be done. Signed-off-by: Cédric Le Goater <clg@kaod.org> Message-Id: <20210222133956.156001-1-clg@kaod.org> Reviewed-by: Greg Kurz <groug@kaod.org> [dwg: Trivial capitalization fix] Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Cédric Le Goater
David Gibson
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10
docs/system/ppc/embedded.rst
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10
docs/system/ppc/embedded.rst
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Embedded family boards
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======================
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- ``bamboo`` bamboo
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- ``mpc8544ds`` mpc8544ds
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- ``ppce500`` generic paravirt e500 platform
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- ``ref405ep`` ref405ep
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- ``sam460ex`` aCube Sam460ex
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- ``taihu`` taihu
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- ``virtex-ml507`` Xilinx Virtex ML507 reference design
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34
docs/system/ppc/powermac.rst
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34
docs/system/ppc/powermac.rst
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PowerMac family boards (``g3beige``, ``mac99``)
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==================================================================
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Use the executable ``qemu-system-ppc`` to simulate a complete PowerMac
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PowerPC system.
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- ``g3beige`` Heathrow based PowerMAC
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- ``mac99`` Mac99 based PowerMAC
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Supported devices
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-----------------
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QEMU emulates the following PowerMac peripherals:
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* UniNorth or Grackle PCI Bridge
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* PCI VGA compatible card with VESA Bochs Extensions
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* 2 PMAC IDE interfaces with hard disk and CD-ROM support
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* NE2000 PCI adapters
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* Non Volatile RAM
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* VIA-CUDA with ADB keyboard and mouse.
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Missing devices
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---------------
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* To be identified
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Firmware
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--------
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Since version 0.9.1, QEMU uses OpenBIOS https://www.openbios.org/ for
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the g3beige and mac99 PowerMac and the 40p machines. OpenBIOS is a free
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(GPL v2) portable firmware implementation. The goal is to implement a
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100% IEEE 1275-1994 (referred to as Open Firmware) compliant firmware.
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193
docs/system/ppc/powernv.rst
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193
docs/system/ppc/powernv.rst
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PowerNV family boards (``powernv8``, ``powernv9``)
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==================================================================
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PowerNV (as Non-Virtualized) is the "baremetal" platform using the
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OPAL firmware. It runs Linux on IBM and OpenPOWER systems and it can
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be used as an hypervisor OS, running KVM guests, or simply as a host
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OS.
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The PowerNV QEMU machine tries to emulate a PowerNV system at the
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level of the skiboot firmware, which loads the OS and provides some
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runtime services. Power Systems have a lower firmware (HostBoot) that
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does low level system initialization, like DRAM training. This is
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beyond the scope of what QEMU addresses today.
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Supported devices
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-----------------
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* Multi processor support for POWER8, POWER8NVL and POWER9.
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* XSCOM, serial communication sideband bus to configure chiplets
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* Simple LPC Controller
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* Processor Service Interface (PSI) Controller
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* Interrupt Controller, XICS (POWER8) and XIVE (POWER9)
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* POWER8 PHB3 PCIe Host bridge and POWER9 PHB4 PCIe Host bridge
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* Simple OCC is an on-chip microcontroller used for power management
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tasks
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* iBT device to handle BMC communication, with the internal BMC
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simulator provided by QEMU or an external BMC such as an Aspeed
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QEMU machine.
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* PNOR containing the different firmware partitions.
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Missing devices
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---------------
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A lot is missing, among which :
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* POWER10 processor
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* XIVE2 (POWER10) interrupt controller
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* I2C controllers (yet to be merged)
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* NPU/NPU2/NPU3 controllers
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* EEH support for PCIe Host bridge controllers
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* NX controller
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* VAS controller
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* chipTOD (Time Of Day)
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* Self Boot Engine (SBE).
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* FSI bus
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Firmware
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--------
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The OPAL firmware (OpenPower Abstraction Layer) for OpenPower systems
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includes the runtime services `skiboot` and the bootloader kernel and
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initramfs `skiroot`. Source code can be found on GitHub:
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https://github.com/open-power.
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Prebuilt images of `skiboot` and `skiboot` are made available on the `OpenPOWER <https://openpower.xyz/job/openpower/job/openpower-op-build/>`__ site. To boot a POWER9 machine, use the `witherspoon <https://openpower.xyz/job/openpower/job/openpower-op-build/label=slave,target=witherspoon/lastSuccessfulBuild/>`__ images. For POWER8, use
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the `palmetto <https://openpower.xyz/job/openpower/job/openpower-op-build/label=slave,target=palmetto/lastSuccessfulBuild/>`__ images.
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QEMU includes a prebuilt image of `skiboot` which is updated when a
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more recent version is required by the models.
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Boot options
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------------
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Here is a simple setup with one e1000e NIC :
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.. code-block:: bash
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$ qemu-system-ppc64 -m 2G -machine powernv9 -smp 2,cores=2,threads=1 \
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-accel tcg,thread=single \
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-device e1000e,netdev=net0,mac=C0:FF:EE:00:00:02,bus=pcie.0,addr=0x0 \
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-netdev user,id=net0,hostfwd=::20022-:22,hostname=pnv \
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-kernel ./zImage.epapr \
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-initrd ./rootfs.cpio.xz \
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-nographic
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and a SATA disk :
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.. code-block:: bash
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-device ich9-ahci,id=sata0,bus=pcie.1,addr=0x0 \
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-drive file=./ubuntu-ppc64le.qcow2,if=none,id=drive0,format=qcow2,cache=none \
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-device ide-hd,bus=sata0.0,unit=0,drive=drive0,id=ide,bootindex=1 \
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Complex PCIe configuration
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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Six PHBs are defined per chip (POWER9) but no default PCI layout is
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provided (to be compatible with libvirt). One PCI device can be added
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on any of the available PCIe slots using command line options such as:
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.. code-block:: bash
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-device e1000e,netdev=net0,mac=C0:FF:EE:00:00:02,bus=pcie.0,addr=0x0
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-netdev bridge,id=net0,helper=/usr/libexec/qemu-bridge-helper,br=virbr0,id=hostnet0
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-device megasas,id=scsi0,bus=pcie.0,addr=0x0
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-drive file=./ubuntu-ppc64le.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=none
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-device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2
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Here is a full example with two different storage controllers on
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different PHBs, each with a disk, the second PHB is empty :
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.. code-block:: bash
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$ qemu-system-ppc64 -m 2G -machine powernv9 -smp 2,cores=2,threads=1 -accel tcg,thread=single \
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-kernel ./zImage.epapr -initrd ./rootfs.cpio.xz -bios ./skiboot.lid \
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\
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-device megasas,id=scsi0,bus=pcie.0,addr=0x0 \
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-drive file=./rhel7-ppc64le.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=none \
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-device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=2 \
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\
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-device pcie-pci-bridge,id=bridge1,bus=pcie.1,addr=0x0 \
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\
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-device ich9-ahci,id=sata0,bus=bridge1,addr=0x1 \
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-drive file=./ubuntu-ppc64le.qcow2,if=none,id=drive0,format=qcow2,cache=none \
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-device ide-hd,bus=sata0.0,unit=0,drive=drive0,id=ide,bootindex=1 \
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-device e1000e,netdev=net0,mac=C0:FF:EE:00:00:02,bus=bridge1,addr=0x2 \
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-netdev bridge,helper=/usr/libexec/qemu-bridge-helper,br=virbr0,id=net0 \
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-device nec-usb-xhci,bus=bridge1,addr=0x7 \
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\
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-serial mon:stdio -nographic
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You can also use VIRTIO devices :
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.. code-block:: bash
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-drive file=./fedora-ppc64le.qcow2,if=none,snapshot=on,id=drive0 \
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-device virtio-blk-pci,drive=drive0,id=blk0,bus=pcie.0 \
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\
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-netdev tap,helper=/usr/lib/qemu/qemu-bridge-helper,br=virbr0,id=netdev0 \
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-device virtio-net-pci,netdev=netdev0,id=net0,bus=pcie.1 \
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\
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-fsdev local,id=fsdev0,path=$HOME,security_model=passthrough \
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-device virtio-9p-pci,fsdev=fsdev0,mount_tag=host,bus=pcie.2
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Multi sockets
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~~~~~~~~~~~~~
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The number of sockets is deduced from the number of CPUs and the
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number of cores. ``-smp 2,cores=1`` will define a machine with 2
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sockets of 1 core, whereas ``-smp 2,cores=2`` will define a machine
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with 1 socket of 2 cores. ``-smp 8,cores=2``, 4 sockets of 2 cores.
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BMC configuration
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~~~~~~~~~~~~~~~~~
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OpenPOWER systems negotiate the shutdown and reboot with their
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BMC. The QEMU PowerNV machine embeds an IPMI BMC simulator using the
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iBT interface and should offer the same power features.
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If you want to define your own BMC, use ``-nodefaults`` and specify
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one on the command line :
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.. code-block:: bash
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-device ipmi-bmc-sim,id=bmc0 -device isa-ipmi-bt,bmc=bmc0,irq=10
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The files `palmetto-SDR.bin <http://www.kaod.org/qemu/powernv/palmetto-SDR.bin>`__
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and `palmetto-FRU.bin <http://www.kaod.org/qemu/powernv/palmetto-FRU.bin>`__
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define a Sensor Data Record repository and a Field Replaceable Unit
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inventory for a palmetto BMC. They can be used to extend the QEMU BMC
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simulator.
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.. code-block:: bash
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-device ipmi-bmc-sim,sdrfile=./palmetto-SDR.bin,fruareasize=256,frudatafile=./palmetto-FRU.bin,id=bmc0 \
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-device isa-ipmi-bt,bmc=bmc0,irq=10
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The PowerNV machine can also be run with an external IPMI BMC device
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connected to a remote QEMU machine acting as BMC, using these options
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:
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.. code-block:: bash
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-chardev socket,id=ipmi0,host=localhost,port=9002,reconnect=10 \
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-device ipmi-bmc-extern,id=bmc0,chardev=ipmi0 \
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-device isa-ipmi-bt,bmc=bmc0,irq=10 \
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-nodefaults
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NVRAM
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~~~~~
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Use a MTD drive to add a PNOR to the machine, and get a NVRAM :
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.. code-block:: bash
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-drive file=./witherspoon.pnor,format=raw,if=mtd
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CAVEATS
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-------
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* No support for multiple HW threads (SMT=1). Same as pseries.
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* CPU can hang when doing intensive I/Os. Use ``-append powersave=off`` in that case.
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18
docs/system/ppc/prep.rst
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18
docs/system/ppc/prep.rst
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Prep machine (``40p``)
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==================================================================
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Use the executable ``qemu-system-ppc`` to simulate a complete 40P (PREP)
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Supported devices
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-----------------
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QEMU emulates the following 40P (PREP) peripherals:
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* PCI Bridge
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* PCI VGA compatible card with VESA Bochs Extensions
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* 2 IDE interfaces with hard disk and CD-ROM support
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* Floppy disk
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* PCnet network adapters
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* Serial port
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* PREP Non Volatile RAM
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* PC compatible keyboard and mouse.
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12
docs/system/ppc/pseries.rst
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12
docs/system/ppc/pseries.rst
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@ -0,0 +1,12 @@
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pSeries family boards (``pseries``)
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===================================
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Supported devices
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-----------------
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Missing devices
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---------------
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Firmware
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--------
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@ -3,45 +3,22 @@
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PowerPC System emulator
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-----------------------
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Use the executable ``qemu-system-ppc`` to simulate a complete 40P (PREP)
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or PowerMac PowerPC system.
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Board-specific documentation
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============================
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QEMU emulates the following PowerMac peripherals:
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You can get a complete list by running ``qemu-system-ppc64 --machine
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help``.
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- UniNorth or Grackle PCI Bridge
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..
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This table of contents should be kept sorted alphabetically
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by the title text of each file, which isn't the same ordering
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as an alphabetical sort by filename.
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- PCI VGA compatible card with VESA Bochs Extensions
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.. toctree::
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:maxdepth: 1
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- 2 PMAC IDE interfaces with hard disk and CD-ROM support
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- NE2000 PCI adapters
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- Non Volatile RAM
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- VIA-CUDA with ADB keyboard and mouse.
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QEMU emulates the following 40P (PREP) peripherals:
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- PCI Bridge
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- PCI VGA compatible card with VESA Bochs Extensions
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- 2 IDE interfaces with hard disk and CD-ROM support
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- Floppy disk
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- PCnet network adapters
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- Serial port
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- PREP Non Volatile RAM
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- PC compatible keyboard and mouse.
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Since version 0.9.1, QEMU uses OpenBIOS https://www.openbios.org/ for
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the g3beige and mac99 PowerMac and the 40p machines. OpenBIOS is a free
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(GPL v2) portable firmware implementation. The goal is to implement a
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100% IEEE 1275-1994 (referred to as Open Firmware) compliant firmware.
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More information is available at
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http://perso.magic.fr/l_indien/qemu-ppc/.
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ppc/embedded
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ppc/powermac
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ppc/powernv
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ppc/prep
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ppc/pseries
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