QEMU ARM Virtual Machine with xenial Ubuntu

qemu-build-script.sh

#! /bin/sh
#
#   Copyright (c) 2019 Nat! - Mulle kybernetiK
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#
# replace this with a random MAC address of your choice (or leave as is)
MAC="00:50:56:02:3f:bf"
#
# If you use internal bridging uncomment this and make this your bridge
# device
# BRIDGE=virbr0

#
# Xenial is the last ubuntu I found with a arm64-uefi1.img provided
#
RELEASE=xenial
URL="https://cloud-images.ubuntu.com/${RELEASE}/current/${RELEASE}-server-cloudimg-arm64-uefi1.img"

sudo apt-get install qemu-system-arm qemu-efi cloud-image-utils

if [ ! -f flash0.img ]
then
   dd if=/dev/zero of=flash0.img bs=1M count=64 || exit 1
fi

if [ ! -f QEMU_EFI.fd ]
then
   dd if=/usr/share/qemu-efi/QEMU_EFI.fd of=flash0.img conv=notrunc || exit 1
fi
if [ ! -f flash1.img ]
then
   dd if=/dev/zero of=flash1.img bs=1M count=64
fi

file="`basename -- "${URL}"`"

if [ ! -f "${file}" ]
then
   curl -O "${URL}" || exit 1
   qemu-img resize "${file}" +20G
fi

if [ ! -f user-data.img ]
then
   cat > user-data <<EOF
#cloud-config
password: ${PASSWORD:-nextnext}
chpasswd: { expire: False }
ssh_pwauth: True
EOF

   cloud-localds user-data.img user-data || exit 1
   rm user-data
fi

if [ ! -z "${BRIDGE}" ]
then
   #
   # qemu needs this funny bridge allowance to connect ?
   #
   if [ ! -f /etc/qemu/bridge.conf ]
   then
      sudo mkdir -p /etc/qemu
      echo "allow ${BRIDGE}" | sudo tee "/etc/qemu/bridge.conf" > /dev/null
   fi
   NETDEV="bridge,br=${BRIDGE}"
else
   NETDEV="type=tap"
fi

# https://wiki.ubuntu.com/ARM64/QEMU
# https://askubuntu.com/questions/281763/is-there-any-prebuilt-qemu-ubuntu-image32bit-online/1081171#1081171

sudo qemu-system-aarch64 \
   -smp "${NCPU:-8}" \
   -m "${RAM:-8192}" \
   -cpu cortex-a57 \
   -M virt \
   -nographic \
   -drive file="flash0.img",format=raw,if=pflash \
   -drive file="flash1.img",format=raw,if=pflash \
   -drive file="${file}",id=hd0,if=none \
   -drive file="user-data.img",format=raw \
   -device virtio-blk-device,drive=hd0 \
   -device virtio-net-device,netdev=net0,mac="${MAC}" \
   -netdev "${NETDEV}",id=net0