VM on Raspberry Pi 3

config.env

export CLANG_VERSION="CLANG38"
export UBUNTU_RELEASE="focal"

prepare.bash

#!/bin/bash

. config.env

LINARO_TIANOCORE_IMAGE="http://snapshots.linaro.org/components/kernel/leg-virt-tianocore-edk2-upstream/latest/QEMU-AARCH64/RELEASE_$CLANG_VERSION/QEMU_EFI.fd"
UBUNTU_CLOUD_IMAGE="https://cloud-images.ubuntu.com/$UBUNTU_RELEASE/current/$UBUNTU_RELEASE-server-cloudimg-arm64.img"

wget -c $LINARO_TIANOCORE_IMAGE
wget -c $UBUNTU_CLOUD_IMAGE

qemu-img create -f qcow2 -b $UBUNTU_RELEASE-server-cloudimg-arm64.img $UBUNTU_RELEASE-image-01.img

{ echo instance-id: kvm-$UBUNTU_RELEASE-01; echo local-hostname: kvm-$UBUNTU_RELEASE; } > meta-data
printf "#cloud-config\npassword: passw0rd\nchpasswd: { expire: False }\nssh_pwauth: True\n" > user-data

genisoimage -V cidata -J -r -o seed-kvm-$UBUNTU_RELEASE-01.iso user-data meta-data

run.bash

#!/bin/bash

. config.env

qemu-system-aarch64 \
  -M virt \
  -cpu host \
  -smp 2 \
  -m 384M \
  -nographic \
  -bios QEMU_EFI.fd \
  -cdrom seed-kvm-$UBUNTU_RELEASE-01.iso \
  -drive if=none,file=$UBUNTU_RELEASE-image-01.img,id=hd0 \
  -device virtio-blk-device,drive=hd0 \
  -device virtio-net-device,netdev=vmnic \
  -netdev user,id=vmnic,hostfwd=tcp::5555-:22  \
  -accel kvm \
  2> output.log