diff options
Diffstat (limited to 'distros/launch-qemu.sh')
| -rwxr-xr-x | distros/launch-qemu.sh | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/distros/launch-qemu.sh b/distros/launch-qemu.sh new file mode 100755 index 0000000..ad679ad --- /dev/null +++ b/distros/launch-qemu.sh @@ -0,0 +1,192 @@ +#!/bin/bash + +# +# user changeable parameters +# +HDA_FILE="${HOME}/ubuntu-18.04-desktop.qcow2" +GUEST_SIZE_IN_MB="4096" +SEV_GUEST="1" +SMP_NCPUS="4" +CONSOLE="qxl" +QEMU_INSTALL_DIR=/usr/local/bin/ +UEFI_BIOS_CODE="/usr/local/share/qemu/OVMF_CODE.fd" +UEFI_BIOS_VARS="OVMF_VARS.fd" +#VNC_PORT="" +USE_VIRTIO="1" + +usage() { + echo "$0 [options]" + echo "Available <commands>:" + echo " -hda hard disk ($HDA_FILE)" + echo " -nosev disable sev support" + echo " -mem guest memory" + echo " -smp number of cpus" + echo " -console display console to use (serial or gxl)" + echo " -vnc VNC port to use" + echo " -bios bios to use (default $UEFI_BIOS_CODE)" + echo " -kernel kernel to use" + echo " -initrd initrd to use" + echo " -cdrom CDROM image" + echo " -virtio use virtio devices" + echo " -gdb start gdbserver" + exit 1 +} + +add_opts() { + echo -n "$* " >> ${QEMU_CMDLINE} +} + +run_cmd () { + $* + if [ $? -ne 0 ]; then + echo "command $* failed" + exit 1 + fi +} + +if [ `id -u` -ne 0 ]; then + echo "Must be run as root!" + exit 1 +fi + +while [[ $1 != "" ]]; do + case "$1" in + -hda) HDA_FILE="${2}" + shift + ;; + -nosev) SEV_GUEST="0" + ;; + -mem) GUEST_SIZE_IN_MB=${2} + shift + ;; + -console) CONSOLE=${2} + shift + ;; + -smp) SMP_NCPUS=$2 + shift + ;; + -vnc) VNC_PORT=$2 + shift + if [ "${VNC_PORT}" = "" ]; then + usage + fi + ;; + -bios) UEFI_BIOS_CODE="`readlink -f $2`" + shift + ;; + -netconsole) NETCONSOLE_PORT=$2 + shift + ;; + -initrd) INITRD_FILE=$2 + shift + ;; + -kernel) KERNEL_FILE=$2 + shift + ;; + -cdrom) CDROM_FILE=$2 + shift + ;; + -virtio) USE_VIRTIO="1" + ;; + -gdb) USE_GDB="1" + ;; + *) usage;; + esac + shift +done + +# we add all the qemu command line options into a file +QEMU_CMDLINE=/tmp/cmdline.$$ +rm -rf ${QEMU_CMDLINE} + +add_opts "${QEMU_INSTALL_DIR}qemu-system-x86_64" + +# Basic virtual machine property +add_opts "-enable-kvm -cpu EPYC -machine q35" + +# add number of VCPUs +[ ! -z ${SMP_NCPUS} ] && add_opts "-smp ${SMP_NCPUS},maxcpus=64" + +# define guest memory +add_opts "-m ${GUEST_SIZE_IN_MB}M,slots=5,maxmem=30G" + +# The OVMF binary, including the non-volatile variable store, appears as a +# "normal" qemu drive on the host side, and it is exposed to the guest as a +# persistent flash device. +add_opts "-drive if=pflash,format=raw,unit=0,file=${UEFI_BIOS_CODE},readonly" +add_opts "-drive if=pflash,format=raw,unit=1,file=${UEFI_BIOS_VARS}" + +# add CDROM if specified +[ ! -z ${CDROM_FILE} ] && add_opts "-drive file=${CDROM_FILE},media=cdrom -boot d" + +add_opts "-netdev user,id=vmnic -device e1000,netdev=vmnic" + +# If harddisk file is specified then add the HDD drive +if [ ! -z ${HDA_FILE} ]; then + if [ "$USE_VIRTIO" = "1" ]; then + if [[ ${HDA_FILE} = *"qcow2" ]]; then + add_opts "-drive file=${HDA_FILE},if=none,id=disk0,format=qcow2" + else + add_opts "-drive file=${HDA_FILE},if=none,id=disk0,format=raw" + fi + add_opts "-device virtio-scsi-pci,id=scsi,disable-legacy=on,iommu_platform=true" + add_opts "-device scsi-hd,drive=disk0" + else + if [[ ${HDA_FILE} = *"qcow2" ]]; then + add_opts "-drive file=${HDA_FILE},format=qcow2" + else + add_opts "-drive file=${HDA_FILE},format=raw" + fi + fi +fi + +# If this is SEV guest then add the encryption device objects to enable support +if [ ${SEV_GUEST} = "1" ]; then + add_opts "-object sev-guest,id=sev0,cbitpos=47,reduced-phys-bits=1" + add_opts "-machine memory-encryption=sev0" +fi + +# if console is serial then disable graphical interface +if [ "${CONSOLE}" = "serial" ]; then + add_opts "-nographic" +else + add_opts "-vga ${CONSOLE}" +fi + +# if -kernel arg is specified then use the kernel provided in command line for boot +if [ "${KERNEL_FILE}" != "" ]; then + add_opts "-kernel $KERNEL_FILE" + add_opts "-append \"console=ttyS0 earlyprintk=serial root=/dev/sda2\"" + [ ! -z ${INITRD_FILE} ] && add_opts "-initrd ${INITRD_FILE}" +fi + +# start vnc server +[ ! -z ${VNC_PORT} ] && add_opts "-vnc :${VNC_PORT}" && echo "Starting VNC on port ${VNC_PORT}" + +# start monitor on pty +add_opts "-monitor pty" + +# add virtio ring +if [ "$USE_VIRTIO" = "1" ]; then + add_opts "-device virtio-rng-pci,disable-legacy=on,iommu_platform=true" +fi + +# log the console output in stdout.log +QEMU_CONSOLE_LOG=`pwd`/stdout.log + +# save the command line args into log file +cat $QEMU_CMDLINE | tee ${QEMU_CONSOLE_LOG} +echo | tee -a ${QEMU_CONSOLE_LOG} + + +# map CTRL-C to CTRL ] +echo "Mapping CTRL-C to CTRL-]" +stty intr ^] + +echo "Launching VM ..." +bash ${QEMU_CMDLINE} 2>&1 | tee -a ${QEMU_CONSOLE_LOG} + +# restore the mapping +stty intr ^c + +rm -rf ${QEMU_CMDLINE} |