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doc: adding guide to launch 2 Linux UOSes using SDC2 scenario
Tracked-On: #3462 Signed-off-by: Tonny Tzeng <tonny.tzeng@intel.com> Reviewed-by: Fuzhong Liu <fuzhong.liu@intel.com> Reviewed-by: Nanlin Xie <nanlin.xie@intel.com>
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doc/tutorials/images/sdc2-defconfig.png
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doc/tutorials/using_sdc2_mode_on_nuc.rst
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doc/tutorials/using_sdc2_mode_on_nuc.rst
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.. _using_sdc2_mode_on_nuc:
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Launch Two User VMs on NUC using SDC2 Scenario
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##############################################
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ACRN hypervisor supports new SDC2 (Software Defined Cockpit) scenario
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since the tag ``acrn-2019w29.5-140000p``. In SDC2 scenario,
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up to three User VMs (e.g. Clear Linux + Ubuntu) can be launched from
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the Service VM. This tutorial provides step by step instructions on how
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to enable the ACRN hypervisor SDC2 scenario on Intel NUC to activate
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two post-launched VMs running Linux based guest OSes. The same process
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can be applied to launch the third Linux VM as well.
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ACRN Service VM Setup
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*********************
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Refer to the steps in :ref:`getting-started-apl-nuc` to set up ACRN on
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Intel NUC. The target device must be capable of launching a Clear Linux User VM
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as a starting point.
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Re-build ACRN UEFI Executable
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*****************************
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The ACRN prebuilt UEFI executable ``acrn.efi`` is compiled for SDC scenario
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by default, in which only one post-launched VM is supported.
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To activate more than one post-launched VM, you need to enable the SDC2
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scenario and rebuild the UEFI executable with the following steps:
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#. Refer to :ref:`getting-started-building` to set up the development environment
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for re-compiling the UEFI executable from ACRN source tree.
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#. Enter the ``hypervisor`` directory under the ACRN source tree to
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reconfigure the ACRN hypervisor for SDC2 scenario. The following example
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picks up the configurations for ``kbl-nuc-i7`` board as a template,
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you can specify other board type which is closed to your target system.
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.. code-block:: bash
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$ cd hypervisor/
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$ make defconfig BOARD=kbl-nuc-i7
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$ make menuconfig
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.. figure:: images/sdc2-defconfig.png
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:align: center
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:width: 400px
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:name: Reconfigure the ACRN hypervisor
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#. Select ``Software Defined Cockpit 2`` option for the **ACRN Scenario** configuration:
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.. figure:: images/sdc2-selected.png
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:align: center
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:width: 400px
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:name: Select the SDC2 scenario option
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#. Press :kbd:`D` to save the minimum configurations to a default file ``defconfig``,
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then press :kbd:`Q` to quit the menuconfig script.
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.. figure:: images/sdc2-save-mini-config.png
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:align: center
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:width: 400px
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:name: Save the customized configurations
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#. Create a new BOARD configuration (say ``mydevice``) with the SDC2
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scenario enabled. Replace the following ``kbl-nuc-i7`` soft linked target
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by the board type you specified in the previous step:
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.. code-block:: bash
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$ cp defconfig arch/x86/configs/mydevice.config
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$ ln -s kbl-nuc-i7 arch/x86/configs/mydevice
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#. Go to the root of ACRN source tree to build the ACRN UEFI executable
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with the customized configurations:
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.. code-block:: bash
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$ cd ..
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$ make FIRMWARE=uefi BOARD=mydevice
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#. Copy the generated ``acrn.efi`` executable to the ESP partition.
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You may need to mount the ESP partition if it's not mounted.
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.. code-block:: bash
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$ sudo mount /dev/sda1 /boot
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$ sudo cp build/hypervisor/acrn.efi /boot/EFI/acrn/acrn.efi
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#. Reboot the ACRN hypervisor and the Service VM.
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Launch User VMs with predefined UUIDs
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*************************************
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In SDC2 scenario, VMs launched by the ACRN device model ``acrn-dm``
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must match the following UUIDs. You will have to add the ``-U`` parameter
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to the ``launch_uos.sh`` script, in order to attach to specific VM through
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``acrn-dm``.
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* d2795438-25d6-11e8-864e-cb7a18b34643
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* 495ae2e5-2603-4d64-af76-d4bc5a8ec0e5
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* 38158821-5208-4005-b72a-8a609e4190d0
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For example, the following code snippet is used to launch the VM1:
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.. code-block:: none
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:emphasize-lines: 9
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acrn-dm -A -m $mem_size -c $2 -s 0:0,hostbridge -s 1:0,lpc -l com1,stdio \
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-s 2,pci-gvt -G "$3" \
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-s 5,virtio-console,@pty:pty_port \
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-s 6,virtio-hyper_dmabuf \
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-s 3,virtio-blk,clear-27550-kvm.img \
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-s 4,virtio-net,tap0 \
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$logger_setting \
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--mac_seed $mac_seed \
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-U d2795438-25d6-11e8-864e-cb7a18b34643 \
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-k /usr/lib/kernel/default-iot-lts2018 \
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-B "root=/dev/vda3 rw rootwait maxcpus=$2 nohpet console=tty0 console=hvc0 \
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console=ttyS0 no_timer_check ignore_loglevel log_buf_len=16M \
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consoleblank=0 tsc=reliable i915.avail_planes_per_pipe=$4 \
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i915.enable_hangcheck=0 i915.nuclear_pageflip=1 i915.enable_guc_loading=0 \
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i915.enable_guc_submission=0 i915.enable_guc=0" $vm_name
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Likewise, the following code snippet specifies a separate UUID to launch the VM2.
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.. code-block:: none
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:emphasize-lines: 2,6,10
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acrn-dm -A -m $mem_size -c $2 -s 0:0,hostbridge -s 1:0,lpc -l com1,stdio \
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-s 2,pci-gvt -G "$3" \
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-s 5,virtio-console,@pty:pty_port \
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-s 6,virtio-hyper_dmabuf \
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-s 3,virtio-blk,ubuntu-16.04.img \
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-s 4,virtio-net,tap1 \
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-s 7,virtio-rnd \
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$logger_setting \
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--mac_seed $mac_seed \
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-U 495ae2e5-2603-4d64-af76-d4bc5a8ec0e5 \
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-k /usr/lib/kernel/default-iot-lts2018 \
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-B "root=/dev/vda rw rootwait maxcpus=$2 nohpet console=tty0 console=hvc0 \
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console=ttyS0 no_timer_check ignore_loglevel log_buf_len=16M \
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consoleblank=0 tsc=reliable i915.avail_planes_per_pipe=$4 \
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i915.enable_hangcheck=0 i915.nuclear_pageflip=1 i915.enable_guc_loading=0 \
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i915.enable_guc_submission=0 i915.enable_guc=0" $vm_name
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.. note::
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In addition to a different predefined UUID, you also need to specify
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a different network tap device (e.g. ``tap1``) to connect the VM2 to
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the network.
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.. note::
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i915 GPU supports three hardware pipes to drive the displays,
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however only certain products design with circuitry to connect to
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three external displays.
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On a system supports up to two external displays, since the primary
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display has been assigned to the Service VM at boot time, you may
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remove the ``-s 2,pci-gvt -G "$3"`` options in one of the previous
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scripts to completely disable the GVT-g feature from that particular VM.
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Refer the :ref:`APL_GVT-g-hld` for detailed information.
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.. figure:: images/sdc2-launch-2-laag.png
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:align: center
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:name: Running 2 Linux UOSes
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