Getting Started Guide¶
This guide will help you get started with ACRN. We’ll show how to prepare a build environment on your development computer. Then we’ll walk through the steps to set up a simple ACRN configuration on a target system. The configuration is an ACRN shared scenario and consists of an ACRN hypervisor, Service VM, and one post-launched User VM as illustrated in this figure:
Throughout this guide, you will be exposed to some of the tools, processes, and components of the ACRN project. Let’s get started.
You will need two machines: a development computer and a target system. The development computer is where you configure and build ACRN and your application. The target system is where you deploy and run ACRN and your application.
Before you begin, make sure your machines have the following prerequisites:
A PC with Internet access (A fast system with multiple cores and 16GB memory or more will make the builds go faster.)
Ubuntu Desktop 20.04 LTS (ACRN development is not supported on Windows.)
Target board (see Selecting Hardware)
USB keyboard and mouse
Ethernet cable and Internet access
A second USB disk with minimum 1GB capacity to copy files between the development computer and target system (this guide offers steps for copying via USB disk, but you can use another method if you prefer)
Local storage device (NVMe or SATA drive, for example)
Set Up the Target Hardware¶
To set up the target hardware environment:
Connect the mouse, keyboard, monitor, and power supply cable to the target system.
Connect the target system to the LAN with the Ethernet cable.
Example of a target system with cables connected:
Prepare the Development Computer¶
To set up the ACRN build environment on the development computer:
On the development computer, run the following command to confirm that Ubuntu Desktop 20.04 is running:
If you have an older version, see Ubuntu documentation to install a new OS on the development computer.
Download the information database about all available package updates for your Ubuntu release. We’ll need it to get the latest tools and libraries used for ACRN builds:
sudo apt update
This next command upgrades packages already installed on your system with minor updates and security patches. This command is optional as there is a small risk that upgrading your system software can introduce unexpected issues:
sudo apt upgrade -y #optional command to upgrade system
Install the necessary ACRN build tools:
sudo apt install -y gcc \ git \ make \ vim \ libssl-dev \ libpciaccess-dev \ uuid-dev \ libsystemd-dev \ libevent-dev \ libxml2-dev \ libxml2-utils \ libusb-1.0-0-dev \ python3 \ python3-pip \ python3.8-venv \ libblkid-dev \ e2fslibs-dev \ pkg-config \ libnuma-dev \ libcjson-dev \ liblz4-tool \ flex \ bison \ xsltproc \ clang-format \ bc \ libpixman-1-dev \ libsdl2-dev \ libegl-dev \ libgles-dev \ libdrm-dev
Install Python package dependencies:
sudo pip3 install lxml xmlschema defusedxml
Create a working directory:
Install the iASL compiler/disassembler used for advanced power management, device discovery, and configuration (ACPI) within the host OS:
cd ~/acrn-work wget https://acpica.org/sites/acpica/files/acpica-unix-20210105.tar.gz tar zxvf acpica-unix-20210105.tar.gz cd acpica-unix-20210105 make clean && make iasl sudo cp ./generate/unix/bin/iasl /usr/sbin
Get the ACRN hypervisor and kernel source code. (Because the
acrn-kernelrepo has a lot of Linux kernel history, you can clone the relevant release branch with minimal history, as shown here.)
cd ~/acrn-work git clone https://github.com/projectacrn/acrn-hypervisor.git cd acrn-hypervisor git checkout acrn-2022w18.4-180000p cd .. git clone --depth 1 --branch acrn-2022w18.4-180000p https://github.com/projectacrn/acrn-kernel.git
Prepare the Target and Generate a Board Configuration File¶
In this step, you will use the Board Inspector to generate a board configuration file.
A board configuration file is an XML file that stores hardware-specific information extracted from the target system. The file is used to configure the ACRN hypervisor, because each hypervisor instance is specific to your target hardware.
Whenever you change the configuration of the board, such as peripherals, BIOS settings, additional memory, or PCI devices, you must generate a new board configuration file.
Install OS on the Target¶
The target system needs Ubuntu Desktop 20.04 LTS to run the Board Inspector tool.
To install Ubuntu 20.04:
Insert the Ubuntu bootable USB disk into the target system.
Power on the target system, and select the USB disk as the boot device in the UEFI menu. Note that the USB disk label presented in the boot options depends on the brand/make of the USB drive. (You will need to configure the BIOS to boot off the USB device first, if that option isn’t available.)
After selecting the language and keyboard layout, select the Normal installation and Download updates while installing Ubuntu (downloading updates requires the target to have an Internet connection).
Use the check boxes to choose whether you’d like to install Ubuntu alongside another operating system, or delete your existing operating system and replace it with Ubuntu:
Complete the Ubuntu installation and create a new user account
acrnand set a password.
The next section shows how to configure BIOS settings.
Configure Target BIOS Settings¶
Boot your target and enter the BIOS configuration editor.
Tip: When you are booting your target, you’ll see an option (quickly) to enter the BIOS configuration editor, typically by pressing F2 during the boot and before the GRUB menu (or Ubuntu login screen) appears.
Configure these BIOS settings:
Enable VMX (Virtual Machine Extensions, which provide hardware assist for CPU virtualization).
Enable VT-d (Intel Virtualization Technology for Directed I/O, which provides additional support for managing I/O virtualization).
Disable Secure Boot. This setting simplifies the steps for this example.
The names and locations of the BIOS settings differ depending on the target hardware and BIOS version.
Generate a Board Configuration File¶
Build the Board Inspector Debian package on the development computer:
Move to the development computer.
On the development computer, go to the
Build the Board Inspector Debian package:
make clean && make board_inspector
When done, the build generates a Debian package in the
Copy the Board Inspector Debian package from the development computer to the target system via USB disk as follows:
On the development computer, insert the USB disk that you intend to use to copy files.
Ensure that there is only one USB disk inserted by running the following command:
Confirm that only one disk name appears. You’ll use that disk name in the following steps.
Copy the Board Inspector Debian package to the USB disk:
cd ~/acrn-work/ disk="/media/$USER/"$(ls /media/$USER) cp -r acrn-hypervisor/build/acrn-board-inspector*.deb "$disk"/ sync && sudo umount "$disk"
Insert the USB disk into the target system.
Copy the Board Inspector Debian package from the USB disk to the target:
mkdir -p ~/acrn-work disk="/media/$USER/"$(ls /media/$USER) cp -r "$disk"/acrn-board-inspector*.deb ~/acrn-work
Install the Board Inspector Debian package on the target system:
cd ~/acrn-work sudo apt install ./acrn-board-inspector*.deb
Reboot the system:
Run the Board Inspector to generate the board configuration file. This example uses the parameter
my_boardas the file name.
cd ~/acrn-work sudo board_inspector.py my_board
If you get an error that mentions Pstate and editing the GRUB configuration, reboot the system and run this command again.
Confirm that the board configuration file
my_board.xmlwas generated in the current directory:
my_board.xmlfrom the target to the development computer via USB disk as follows:
Make sure the USB disk is connected to the target.
my_board.xmlto the USB disk:
disk="/media/$USER/"$(ls /media/$USER) cp ~/acrn-work/my_board.xml "$disk"/ sync && sudo umount "$disk"
Insert the USB disk into the development computer.
my_board.xmlfrom the USB disk to the development computer:
disk="/media/$USER/"$(ls /media/$USER) cp "$disk"/my_board.xml ~/acrn-work sync && sudo umount "$disk"
Generate a Scenario Configuration File and Launch Script¶
In this step, you will use the ACRN Configurator to generate a scenario configuration file and launch script.
A scenario configuration file is an XML file that holds the parameters of a specific ACRN configuration, such as the number of VMs that can be run, their attributes, and the resources they have access to.
A launch script is a shell script that is used to configure and create a post-launched User VM. Each User VM has its own launch script.
First, you will install dependencies, build the ACRN Configurator Debian package, and install it on your development computer. Then you will use the ACRN Configurator to generate a scenario configuration file and launch script.
On the development computer, install the ACRN Configurator build tools:
sudo apt install -y libwebkit2gtk-4.0-dev \ build-essential \ curl \ wget \ libssl-dev \ libgtk-3-dev \ libappindicator3-dev \ librsvg2-dev \ python3-venv
Install Node.js (npm included) as follows:
We recommend using nvm to manage your Node.js runtime. It allows you to switch versions and update Node.js easily.
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.2/install.sh | bash
.bashrcinitialization script and then install the latest version of Node.js and npm:
source ~/.bashrc nvm install node --latest-npm nvm use node
Install and upgrade Yarn:
npm install --global yarn
Install rustup, the official installer for Rust:
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
When prompted by the Rust installation script, type
1and press Enter.
1) Proceed with installation (default) 2) Customize installation 3) Cancel installation >1
Configure the current shell:
Install additional ACRN Configurator dependencies:
cd ~/acrn-work/acrn-hypervisor/misc/config_tools python3 -m pip install -r requirements.txt cd configurator python3 -m pip install -r requirements.txt yarn
Build the ACRN Configurator Debian package:
cd ~/acrn-work/acrn-hypervisor make configurator
Install the ACRN Configurator:
sudo apt install -y ~/acrn-work/acrn-hypervisor/build/acrn-configurator_*_amd64.deb
Launch the ACRN Configurator:
On the left-hand side, look for Start a new configuration. Confirm that the working folder is
<path to>/acrn-work/MyConfiguration. Click Use This Folder.
TODO add screenshots to Configurator steps
Import your board configuration file as follows:
Under Import a board configuration file, click Browse for file.
~/acrn-work/my_board.xmland click Open.
Click Import Board File.
The ACRN Configurator makes a copy of your board file, changes the file extension to
.board.xml, and saves the file to the working folder.
Create a new scenario as follows:
Under Create new or import an existing scenario, click Create Scenario.
In the dialog box, confirm that Shared (Post-launched VMs only) is selected.
Confirm that one Service VM and one post-launched VM are selected.
Generate the scenario configuration file and launch script:
Under Configure settings for scenario and launch scripts, the scenario’s configurable items appear. Feel free to look through all the available configuration settings. This is where you can change the settings to meet your application’s particular needs. But for now, you will update only a few settings to make this example work.
Click the VM1 Post-launched tab to access the post-launched VM’s settings.
Confirm that the Basic Parameters tab is selected, and scroll down to Memory size (MB). Change the value to
1024. For this example, we will use Ubuntu 20.04 to boot the post-launched VM. Ubuntu 20.04 needs at least 1024 MB to boot.
Scroll down to Virtio block device, click +, and enter
~/acrn-work/ubuntu-20.04.4-desktop-amd64.iso. This parameter specifies the VM’s OS image and its location on the target system. Later in this guide, you will save the ISO file to that directory.
Click Save Scenario And Launch Scripts to generate the scenario configuration file and launch script.
Click the x in the upper-right corner to close the ACRN Configurator.
Confirm that the scenario configuration file
scenario.xmlappears in your
Confirm that the launch script
TODOappears in the expected output directory:
On the development computer, build the ACRN hypervisor:
cd ~/acrn-work/acrn-hypervisor make clean && make BOARD=~/acrn-work/MyConfiguration/my_board.board.xml SCENARIO=~/acrn-work/MyConfiguration/scenario.xml
The build typically takes a few minutes. When done, the build generates a Debian package in the
cd ./build ls *.deb acrn-my_board-shared-2.7.deb # TODO update file name
The Debian package contains the ACRN hypervisor and tools to ease installing ACRN on the target.
Build the ACRN kernel for the Service VM:
If you have built the ACRN kernel before, run the following command to remove all artifacts from the previous build. Otherwise, an error will occur during the build.
Build the ACRN kernel:
cd ~/acrn-work/acrn-kernel cp kernel_config_service_vm .config make olddefconfig make -j $(nproc) deb-pkg
The kernel build can take 15 minutes or less on a fast computer, but could take an hour or more depending on the performance of your development computer. When done, the build generates four Debian packages in the directory above the build root directory:
cd .. ls *.deb linux-headers-5.10.78-acrn-service-vm_5.10.78-acrn-service-vm-1_amd64.deb linux-image-5.10.78-acrn-service-vm_5.10.78-acrn-service-vm-1_amd64.deb linux-image-5.10.78-acrn-service-vm-dbg_5.10.78-acrn-service-vm-1_amd64.deb linux-libc-dev_5.10.78-acrn-service-vm-1_amd64.deb
Copy all the necessary files generated on the development computer to the target system by USB disk as follows:
Insert the USB disk into the development computer and run these commands:
disk="/media/$USER/"$(ls /media/$USER) cp ~/acrn-work/acrn-hypervisor/build/acrn-my_board-shared-2.7.deb "$disk"/ # TODO update file name cp ~/acrn-work/*acrn-service-vm*.deb "$disk"/ cp ~/acrn-work/my_board/output/launch_user_vm_id3.sh "$disk"/ cp ~/acrn-work/acpica-unix-20210105/generate/unix/bin/iasl "$disk"/ sync && sudo umount "$disk"
Even though our sample default scenario defines six User VMs, we’re only going to launch one of them, so we’ll only need the one launch script.
Insert the USB disk you just used into the target system and run these commands to copy the files locally:
disk="/media/$USER/"$(ls /media/$USER) cp "$disk"/acrn-my_board-shared-2.7.deb ~/acrn-work # TODO update file name cp "$disk"/*acrn-service-vm*.deb ~/acrn-work cp "$disk"/launch_user_vm_id3.sh ~/acrn-work sudo cp "$disk"/iasl /usr/sbin/ sync && sudo umount "$disk"
Install the ACRN Debian package and ACRN kernel Debian packages using these commands:
cd ~/acrn-work sudo apt install ./acrn-my_board-shared-2.7.deb # TODO update file name sudo apt install ./*acrn-service-vm*.deb
Reboot the system:
Confirm that you see the GRUB menu with the “ACRN multiboot2” entry. Select it and proceed to booting ACRN. (It may be autoselected, in which case it will boot with this option automatically in 5 seconds.)
GNU GRUB version 2.04 ──────────────────────────────────────────────────────────────────────────────── Ubuntu Advanced options for Ubuntu UEFI Firmware Settings *ACRN multiboot2
Run ACRN and the Service VM¶
The ACRN hypervisor boots the Ubuntu Service VM automatically.
On the target, log in to the Service VM. (It will look like a normal Ubuntu session.)
Verify that the hypervisor is running by checking
dmesgin the Service VM:
dmesg | grep -i hypervisor
You should see “Hypervisor detected: ACRN” in the output. Example output of a successful installation (yours may look slightly different):
[ 0.000000] Hypervisor detected: ACRN
Launch the User VM¶
Go to the official Ubuntu website to get the Ubuntu Desktop 20.04 LTS ISO image
ubuntu-20.04.4-desktop-amd64.isofor the User VM. (The same image you specified earlier in the ACRN Configurator UI.)
Put the ISO file in the path
~/acrn-work/on the target system.
Launch the User VM:
sudo chmod +x ~/acrn-work/launch_user_vm_id3.sh # TODO update file name sudo ~/acrn-work/launch_user_vm_id3.sh # TODO update file name
It may take about one minute for the User VM to boot and start running the Ubuntu image. You will see a lot of output, then the console of the User VM will appear as follows:
Ubuntu 20.04.4 LTS ubuntu hvc0 ubuntu login:
Log in to the User VM. For the Ubuntu 20.04 ISO, the user is
ubuntu, and there’s no password.
Confirm that you see output similar to this example:
Welcome to Ubuntu 20.04.4 LTS (GNU/Linux 5.11.0-27-generic x86_64) * Documentation: https://help.ubuntu.com * Management: https://landscape.canonical.com * Support: https://ubuntu.com/advantage 0 packages can be updated. 0 updates are security updates. Your Hardware Enablement Stack (HWE) is supported until April 2025. The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. To run a command as administrator (user "root"), use "sudo <command>". See "man sudo_root" for details. ubuntu@ubuntu:~$
This User VM and the Service VM are running different Ubuntu images. Use this command to see that the User VM is running the downloaded Ubuntu ISO image:
ubuntu@ubuntu:~$ uname -r 5.11.0-27-generic
Then open a new terminal window and use the command to see that the Service VM is running the
acrn-kernelService VM image:
acrn@vecow:~$ uname -r 5.10.78-acrn-service-vm
The User VM has launched successfully. You have completed this ACRN setup.
(Optional) To shut down the User VM, run this command in the terminal that is connected to the User VM: