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The edk2 upstream has already suppoorted AArch64 Cloud Hypervisor, and hence we can use upstream edk2 in CI and doc. Signed-off-by: Henry Wang <Henry.Wang@arm.com>
117 lines
3.7 KiB
Markdown
117 lines
3.7 KiB
Markdown
# How to build and test Cloud Hypervisor on AArch64
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This document introduces how to build and test Cloud Hypervisor on AArch64 servers. Currently Cloud Hypervisor cannot be tested on Raspberry PI. Because on AArch64, Cloud Hypervisor requires GICv3-ITS device for PCIe MSI interrupt handling. But GICv3-ITS has not been equipped on any Raspberry PI product so far.
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Now Cloud Hypervisor supports 2 ways of booting on AArch64: UEFI booting and direct-kernel booting. The document covers both of the ways.
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All the steps are based on Ubuntu. We use the Ubuntu cloud image for guest VM disk.
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## Getting started
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We create a folder to build and run Cloud Hypervisor at `$HOME/cloud-hypervisor`
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```shell
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$ export CLOUDH=$HOME/cloud-hypervisor
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$ mkdir $CLOUDH
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```
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## Prerequisites
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You need to install some prerequisite packages to build and test Cloud Hypervisor.
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### Tools
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```bash
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# Install rust tool chain
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$ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
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# Install the tools used for building guest kernel, EDK2 and converting guest disk
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$ sudo apt-get update
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$ sudo apt-get install git build-essential m4 bison flex uuid-dev qemu-utils
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```
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### Building Cloud Hypervisor
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```bash
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$ pushd $CLOUDH
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$ git clone https://github.com/cloud-hypervisor/cloud-hypervisor.git
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$ cd cloud-hypervisor
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$ cargo build
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$ popd
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```
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### Disk image
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Download the Ubuntu cloud image and convert the image type.
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```bash
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$ pushd $CLOUDH
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$ wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-arm64.img
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$ qemu-img convert -p -f qcow2 -O raw focal-server-cloudimg-arm64.img focal-server-cloudimg-arm64.raw
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$ popd
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```
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## UEFI booting
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This part introduces how to build EDK2 firmware and boot Cloud Hypervisor with it.
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### Building EDK2
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```bash
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$ pushd $CLOUDH
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# Clone source code repos
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$ git clone --depth 1 https://github.com/tianocore/edk2.git -b master
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$ cd edk2
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$ git submodule update --init
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$ cd ..
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$ git clone --depth 1 https://github.com/tianocore/edk2-platforms.git -b master
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$ git clone --depth 1 https://github.com/acpica/acpica.git -b master
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# Build tools
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$ export PACKAGES_PATH="$PWD/edk2:$PWD/edk2-platforms"
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$ export IASL_PREFIX="$PWD/acpica/generate/unix/bin/"
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$ make -C acpica
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$ cd edk2/
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$ . edksetup.sh
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$ cd ..
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$ make -C edk2/BaseTools
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# Build EDK2
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$ build -a AARCH64 -t GCC5 -p ArmVirtPkg/ArmVirtCloudHv.dsc -b RELEASE
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$ popd
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```
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If the build goes well, the EDK2 binary is available at `edk2/Build/ArmVirtCloudHv-AARCH64/RELEASE_GCC5/FV/CLOUDHV_EFI.fd`.
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### Booting the guest VM
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```bash
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$ pushd $CLOUDH
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$ sudo RUST_BACKTRACE=1 $CLOUDH/cloud-hypervisor/target/debug/cloud-hypervisor --api-socket /tmp/cloud-hypervisor.sock --kernel $CLOUDH/edk2/edk2/Build/ArmVirtCloudHv-AARCH64/RELEASE_GCC5/FV/CLOUDHV_EFI.fd --disk path=$CLOUDH/focal-server-cloudimg-arm64.raw --cpus boot=4 --memory size=4096M --serial tty --console off --log-file log.log -vvv --net tap=,mac=12:34:56:78:90:01,ip=192.168.1.1,mask=255.255.255.0
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$ popd
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```
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## Direct-kernel booting
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Alternativelly, you can build your own kernel for guest VM. This way, UEFI is not involved and ACPI cannot be enabled.
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### Building kernel
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```bash
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$ pushd $CLOUDH
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$ git clone --depth 1 "https://github.com/cloud-hypervisor/linux.git" -b ch-5.12
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$ cd linux
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$ cp $CLOUDH/cloud-hypervisor/resources/linux-config-aarch64 .config
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$ make -j `nproc`
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$ popd
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```
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### Booting the guest VM
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```bash
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$ pushd $CLOUDH
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$ sudo $CLOUDH/cloud-hypervisor/target/debug/cloud-hypervisor --api-socket /tmp/cloud-hypervisor.sock --kernel $CLOUDH/linux/arch/arm64/boot/Image --disk path=focal-server-cloudimg-arm64.raw --cmdline "keep_bootcon console=ttyAMA0 reboot=k panic=1 root=/dev/vda1 rw" --cpus boot=4 --memory size=4096M --serial tty --console off --log-file log.log -vvv --net "tap=,mac=,ip=,mask="
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$ popd
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```
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