run-vm.sh

#!/bin/bash

CONSOLE=mon:stdio
SMP=4
MEMSIZE=$((8192))
KERNEL="Image"
FS=cloud.img
CMDLINE="earlycon=pl011,0x09000000" #log_buf_len=64M " #kvm-arm.mode=protected" # memblock=debug"
DTB=""
UNDERSCORE_S=""
SHARED_OPT=""
SSH_PORT=2222
GDB_PORT=""
GDB=""
MON_PORT=""
MON=""
BIOS_FILE=""
BIOS=""

usage() {
    U=""
    if [[ -n "$1" ]]; then
        U="${U}$1\n\n"
    fi
    U="${U}Usage: $0 [options]\n\n"
    U="${U}Options:\n"
    U="$U    -c | --CPU <nr>:       Number of cores (default ${SMP})\n"
    U="$U    -m | --mem <MB>:       Memory size (default ${MEMSIZE})\n"
    U="$U    -b | --bios <BIOS>:    BIOS file\n"
    U="$U    -k | --kernel <Image>: Use kernel image (default ${KERNEL})\n"
    U="$U    -s | --serial <file>:  Output console to <file>\n"
    U="$U    -i | --image <image>:  Use <image> as block device (default ${FS})\n"
    U="$U    -a | --append <snip>:  Add <snip> to the kernel cmdline\n"
    U="$U    --dtb <file>           Use the supplied DTB instead of the auto-generated one\n"
    U="$U    -S                     Stop on startup, wait for GDB\n"
    U="$U    -x | --shared_dir:     Shared directory path\n"
    U="$U    -p | --port:           SSH port\n"
    U="$U    -g | --gdb:            GDB port\n"
    U="$U    -m | --monitor:        Monitor port\n"
    U="$U    -h | --help:           Show this output\n"
    U="${U}\n"
    echo -e "$U" >&2
}

while :
do
    case "$1" in
      -c | --cpu)
        SMP="$2"
        shift 2
        ;;
      -m | --mem)
        MEMSIZE="$2"
        shift 2
        ;;
      -k | --kernel)
        KERNEL="$2"
        shift 2
        ;;
      -b | --bios)
        BIOS_FILE="$2"
        BIOS="--bios ${BIOS_FILE}"
        shift 2
        ;;
      -s | --serial)
        CONSOLE="file:$2"
        shift 2
        ;;
      -i | --image)
        FS="$2"
        shift 2
        ;;
      -a | --append)
        CMDLINE+=" $2"
        shift 2
        ;;
      --dtb)
        DTB="-dtb $2"
        shift 2
        ;;
      -S)
        UNDERSCORE_S="-S"
        shift 1
        ;;
      -x | --shared_dir)
        SHARED_DIR="$2"
        SHARED_OPT="-virtfs local,path=${SHARED_DIR},mount_tag=shared,security_model=none"
        shift 2
        ;;
      -p | --port)
        SSH_PORT="$2"
        shift 2
        ;;
      -g | --gdb)
        GDB_PORT="$2"
        GDB="-gdb tcp::${GDB_PORT}"
        shift 2
        ;;
      -m | --monitor)
        MON_PORT="$2"
        MON="-monitor telnet:localhost:${MON_PORT},server,nowait"
        shift 2
        ;;
      -h | --help)
        usage ""
        exit 1
        ;;
      --) # End of all options
        shift
        break
        ;;
      -*) # Unknown option
        echo "Error: Unknown option: $1" >&2
        exit 1
        ;;
      *)
        break
        ;;
    esac
done

if [[ -z "$KERNEL" ]]; then
    echo "You must supply a guest kernel" >&2
    exit 1
fi

#    -netdev bridge,id=hn0,br=br0 \
#    -device virtio-net-pci,netdev=hn0,id=nic1 \
#    -machine secure=on \
#    -machine mte=on \
#    -machine iommu=smmuv3 \
# see https://www.qemu.org/docs/master/system/arm/virt.html
qemu-system-aarch64 -nographic -machine virt -m ${MEMSIZE} -cpu max -smp ${SMP} \
    -machine virtualization=on \
    -machine gic-version=3 \
    ${BIOS} \
    -kernel ${KERNEL} ${DTB} \
    -drive if=none,file=${FS},id=vda,cache=none,format=raw \
    -device virtio-blk-pci,drive=vda \
    -display none \
    -serial ${CONSOLE} \
    -append "console=ttyAMA0 root=/dev/vda rw ${CMDLINE}" \
    -netdev user,id=net0,hostfwd=tcp::${SSH_PORT}-:22 \
    -device virtio-net-pci,netdev=net0,mac=de:ad:be:ef:41:49 \
    ${SHARED_OPT} \
    ${GDB} \
    ${MON} \
    ${UNDERSCORE_S}