Wrapper for running QEMU with some common options

qemu-run.sh

#!/bin/bash

set -euo pipefail

tpm=0
mem=2048
port=2222
tftpboot=
args=(-accel kvm -cpu host -object rng-random,filename=/dev/urandom,id=rng0)
while [ $# -ge 1 ]; do
    case "$1" in
    -m)
        mem="$2"
        shift 2
        ;;
    -p)
        port="$2"
        shift 2
        ;;
    -e)
        args+=(-drive if=pflash,format=raw,readonly=on,file=/usr/share/edk2/ovmf/OVMF_CODE.fd)
        shift
        ;;
    -t)
        tpm=1
        args+=(-chardev socket,id=chrtpm,path=tpm.sock -tpmdev emulator,id=tpm0,chardev=chrtpm -device tpm-tis,tpmdev=tpm0)
        shift 
        ;;
    -i)
        args+=(-fw_cfg name=opt/com.coreos/config,file="$2")
        shift 2
        ;;
    -d)
        tftpboot="$tftpboot,tftp=$2"
        shift 2
        ;;
    -b)
        tftpboot="$tftpboot,bootfile=$2"
        shift 2
        ;;
    --)
        shift
        remaining=$#
        args+=("$@")
        shift $remaining
        ;;
    *)
        echo "Unrecognized argument $1"
        exit 1
        ;;
    esac
done

args+=(-m $mem -netdev user,id=eth0,hostfwd=tcp::$port-:22,hostname="qemu"$tftpboot -device virtio-net-pci,netdev=eth0)

if [ $tpm = 1 ]; then
    tpmdir=$(mktemp -d)
    swtpm socket --tpm2 --ctrl type=unixio,path=tpm.sock --tpmstate dir="${tpmdir}" &
    tpmpid=$!
    trap "rm -r $tpmdir; kill $tpmpid" EXIT
fi

echo "qemu-system-x86_64 ${args[@]}"
qemu-system-x86_64 "${args[@]}"