Documentation: Add tutorial about how to use partition mode on UP2
This patch adds tutorial about all the steps you need to take in order to use partition mode with ACRN hypervisor on UP2. Tracked-On: #1160 Signed-off-by: Kaige Fu <kaige.fu@intel.com>
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Kaige Fu
David Kinder
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.. _partition_mode:
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Using partition mode on UP2
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###########################
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This tutorial describes the steps needed to use partition mode with the ACRN
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hypervisor on UP2.
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Build kernel and modules for partition mode guest
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*************************************************
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* Build kernel and modules
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.. code-block:: none
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git clone https://github.com/projectacrn/acrn-kernel.git
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cd ~/acrn-kernel
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cp kernel_config_partition_os .config
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make oldconfig
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make
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* Install modules
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First of all, please prepare one USB flash drive and one SATA disk. Plug them
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in one PC and follow Clear Linux's `online instruction <https://clearlinux.org/documentation/clear-linux/get-started/bare-metal-install#bare-metal-install>` to install Clear Linux on them.
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Plug the USB flash drive and SATA disk into your PC. Assuming Clear Linux
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rootfs is installed into /dev/sdx3.
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.. code-block:: none
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mount /dev/sdx3 /mnt/sdx3
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cd ~/acrn-kernel
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make INSTALL_MOD_PATH=/mnt/sdx3/ modules_install
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* Install kernel
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First, please following Ubuntu's `online instruction <https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-desktop?_ga=2.114179015.1954550575.1530817291-1278304647.1523530035>` to install it on your UP2's eMMC.
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Copy kernel image to EFI System Partition
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.. code-block:: none
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scp username@IP:~/acrn-kernel/arch/x86/boot/bzImage /boot/efi/
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Enabling partition mode
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***********************
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* Clone ACRN source code
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.. code-block:: none
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git clone https://github.com/projectacrn/acrn-hypervisor.git
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* Configure the ACRN hypervisor to use partition mode
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.. code-block:: none
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cd ~/acrn-hypervisor/hypervisor
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make menuconfig
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Select entry ``Hypervisor mode (Sharing mode)`` and press ``Enter``.
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Then select ``Partition mode`` sub-entry.
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* Configure the ACRN hypervisor's ``serial base address``
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.. code-block:: none
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cd ~/acrn-hypervisor/hypervisor
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make menuconfig
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Select entry ``Base address of serial MMIO region`` and press ``Enter``.
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Then we will see a prompt msgbox with title ``Value for `Base address of serial MMIO region` (hex)``.
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Please type the serial base mmio address of your UP2 board and press ``Enter``.
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* Configure the PCI info about devices assigned to vm.
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For the current code, we can only configure it by modifying the ``vpci_vdev_arrary``
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structure (one per vm) in source code file ``hypervisor/partition/vm_description.c``.
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Here is an reference patch for configuring vm1's assgined PCI devices based on
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UP2 board. This patch can also apply to other vms you try to configure.
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.. code-block:: none
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diff --git a/hypervisor/partition/vm_description.c b/hypervisor/partition/vm_description.c
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index 12818185..88799b00 100644
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--- a/hypervisor/partition/vm_description.c
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+++ b/hypervisor/partition/vm_description.c
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@@ -41,6 +41,7 @@ static struct vpci_vdev_array vpci_vdev_array1 = {
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}
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},
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{/*vdev 1: SATA controller*/
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.vbdf.bits = {.b = 0x00U, .d = 0x01U, .f = 0x0U},
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.ops = &pci_ops_vdev_pt,
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@@ -65,23 +66,24 @@ static struct vpci_vdev_array vpci_vdev_array1 = {
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.bdf.bits = {.b = 0x00U, .d = 0x12U, .f = 0x0U},
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.bar = {
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[0] = {
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- .base = 0xb3f10000UL,
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+ .base = 0x91514000UL,
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.size = 0x2000UL,
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.type = PCIBAR_MEM32
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},
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[1] = {
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- .base = 0xb3f53000UL,
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+ .base = 0x91537000UL,
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.size = 0x100UL,
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.type = PCIBAR_MEM32
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},
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[5] = {
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- .base = 0xb3f52000UL,
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+ .base = 0x91536000UL,
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.size = 0x800UL,
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.type = PCIBAR_MEM32
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},
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}
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}
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},
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}
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};
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* Configure ``.bootargs``
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A default command line is pre-configured in the source code. Here we just
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configure ``root=`` option to help kernel locate the right rootfs and keep the
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other options as default.
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.. code-block:: none
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@@ -171,7 +180,8 @@ struct vm_description_array vm_desc_partition = {
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.start_hpa = 0x100000000UL,
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.mem_size = 0x20000000UL, /* uses contiguous memory from host */
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.vm_vuart = true,
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- .bootargs = "root=/dev/sda rw rootwait noxsave maxcpus=2 nohpet console=hvc0 \
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+ .bootargs = "root=PARTUUID=<Your rootfs PARTUUID> rw rootwait noxsave maxcpus=2 nohpet 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 xapic_phys",
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.vpci_vdev_array = &vpci_vdev_array1,
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* Build ACRN with the above changes.
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.. code-block:: none
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$ make PLATFORM=sbl
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* Install ACRN
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First we should add one menuentry in ``/boot/efi/grub/grub.cfg`` on UP2 board
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.. code-block:: none
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menuentry 'ACRN Partition Mode' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-e23c76ae-b06d-4a6e-ad42-46b8eedfd7d3' {
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recordfail
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load_video
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gfxmode $linux_gfx_mode
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insmod gzio
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insmod part_gpt
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insmod ext2
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echo 'Loading partition mode hypervisor ...'
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multiboot /acrn.32.out
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module /bzImage
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}
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Copy ``acrn.32.out`` and bzImage to ``/boot/efi``
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.. code-block:: none
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scp username@IP:~/acrn-hypervisor/hypervisor/build/acrn.32.out /boot/efi
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* Boot ACRN
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Plug the USB flash drive and SATA Disk into your UP2 board and then reboot the
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board to the built-in EFI shell. Then execute the following command to load
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the ACRN hypervisor.
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.. code-block:: none
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shell> fs1:
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fs1:\> EFI\ubuntu\grubx64.efi
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Here we will see the following menu. Select entry ``ACRN Partition Mode`` and
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press ``Enter`` and then the ACRN hypervisor will be loaded automatically.
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.. figure:: images/partition_mode_grub_menu.png
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:align: center
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:name: Partition Mode Grub Menu
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Playing with ACRN hypervisor with partition mode
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************************************************
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* Connect the serial port of the UP2 board with another PC and use the following
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command to check if vms booted successfully. If vms are booted successfully,
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we will see the following message.
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.. code-block:: none
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ACRN:\>sos_console 1
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----- Entering Guest 1 Shell -----
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root@clr-e8216ad453ad4f08914d83cbc50f838c ~ #
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---Entering ACRN SHELL---
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ACRN:\>sos_console 2
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----- Entering Guest 2 Shell -----
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root@clr-bdbe97b256864a92b44a9449bf229769 ~ #
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---Entering ACRN SHELL---
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ACRN:\>
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