Initial commit

1 files changed, 251 insertions, 0 deletions

diff --git a/launch-qemu.sh b/launch-qemu.sh
new file mode 100755
index 0000000..f9baad5
--- /dev/null
+++ b/launch-qemu.sh
@@ -0,0 +1,251 @@
+#!/bin/bash
+
+#
+# user changeable parameters
+#
+HDA_FILE="${HOME}/ubuntu-16.04-desktop.qcow2"
+GUEST_SIZE_IN_MB="2048"
+SEV_GUEST="1"
+SMP_NCPUS="4"
+CONSOLE="serial"
+QEMU_INSTALL_DIR=`pwd`/bin/
+UEFI_BIOS_CODE="`pwd`/share/qemu/OVMF_CODE.fd"
+UEFI_BIOS_VARS="`pwd`/OVMF_VARS.fd"
+#VNC_PORT=""
+AUTOSTART="1"
+
+usage() {
+	echo "$0 [options]"
+	echo "Available <commands>:"
+	echo " -hda          hard disk"
+	echo " -nosev        disable sev support"
+	echo " -mem          guest memory"
+	echo " -smp          number of cpus"
+	echo " -console      display console to use (serial or graphics)"
+	echo " -vnc          VNC port to use"
+	echo " -bios         bios to use (default $UEFI_BIOS_CODE)"
+	echo " -netconsole   redirect console to tcp port"
+	echo " -kernel       kernel to use"
+	echo " -initrd       initrd to use"
+	echo " -noauto       do not autostart the guest"
+	echo " -cdrom        CDROM image"
+	echo " -hugetlb      use hugetlbfs"
+	echo " -background   background the launch"
+	exit 1  
+}
+
+add_opts() {
+	echo -n "$* " >> ${QEMU_CMDLINE}
+}
+
+stop_network() {
+	if [ "$GUEST_TAP_NAME" = "" ]; then
+		return
+  	fi
+	run_cmd "ip tuntap del ${GUEST_TAP_NAME} mode tap"
+}
+
+exit_from_int() {
+	stop_network
+
+	rm -rf ${QEMU_CMDLINE}
+	# restore the mapping
+	stty intr ^c
+	exit 1
+}
+
+run_cmd () {
+	$*
+	if [ $? -ne 0 ]; then
+		echo "command $* failed"
+		exit 1
+	fi
+}
+
+setup_hugetlbfs() {
+	HUGETLBFS=`mount | grep hugetlbfs | awk {'print $3'}`
+	if [ "${HUGETLBFS}" = "" ]; then
+		HUGETLBFS="/hugetlbfs"
+		run_cmd "mkdir -p $HUGETLBFS"
+		echo "Mounting $HUGETLBFS..."
+		run_cmd "mount -t hugetlbfs nodev $HUGETLBFS"
+	fi
+	# calculate number of hugepage we need for the guest
+	HPAGES=$((($GUEST_SIZE_IN_MB / 2) + 50))
+	echo -n "Setting hugepage count "
+	echo $HPAGES | sudo tee /proc/sys/vm/nr_hugepages
+
+	add_opts "-mem-path ${HUGETLBFS}"
+}
+
+setup_bridge_network() {
+	# Get last tap device on host
+	TAP_NUM=`ifconfig | grep tap | tail -1 | cut -c4- | cut -f1 -d ' '`
+	if [ "$TAP_NUM" = "" ]; then
+		TAP_NUM="1"
+	fi
+	TAP_NUM=`echo $(( TAP_NUM + 1 ))`
+	GUEST_TAP_NAME="tap${TAP_NUM}"
+	GUEST_MAC_ADDR=$(printf "00:16:3e:%02x:01:01" 0x${TAP_NUM})
+
+	echo "Starting network adapter '${GUEST_TAP_NAME}' MAC=$GUEST_MAC_ADDR"
+	run_cmd "ip tuntap add $GUEST_TAP_NAME mode tap user `whoami`"
+	run_cmd "ip link set $GUEST_TAP_NAME up"
+	run_cmd "ip link set $GUEST_TAP_NAME master br0"
+
+	add_opts "-device e1000,mac=${GUEST_MAC_ADDR},netdev=net0"
+      	add_opts "-netdev tap,id=net0,ifname=$GUEST_TAP_NAME,script=no,downscript=no"
+}
+
+trap exit_from_int SIGINT
+
+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=""
+				;;
+		-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
+				;;
+        	-noauto)	AUTOSTART="0"
+				;;
+		-hugetlb)	USE_HUGETLBFS="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 host"
+
+# 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,index=0"
+
+# If harddisk file is specified then add the HDD drive
+if [ ! -z ${HDA_FILE} ]; then
+	if [[ ${HDA_FILE} = *"qcow2" ]]; then
+		add_opts "-drive file=${HDA_FILE},format=qcow2"
+	else
+		add_opts "-drive file=${HDA_FILE},format=raw"
+	fi
+fi
+
+# If this is SEV guest then add the encryption device objects to enable SEV
+if [ ! -z ${SEV_GUEST} ]; then 
+	add_opts "-object sev-guest,id=sev0" 
+	add_opts "-machine memory-encryption=sev0"
+fi
+
+# if we are asked to use hugetlbfs
+[ ! -z ${USE_HUGETLBFS} ] && setup_hugetlbfs
+
+# If we are asked to redirect the serial console to network port
+if [ "${NETCONSOLE_PORT}" != "" ]; then
+	HOST_ADDR="`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'`"
+	add_opts "-chardev socket,host=$HOST_ADDR,port=$NETCONSOLE_PORT,id=gnc1,server,nowait"
+	add_opts "-device isa-serial,chardev=gnc1"
+	echo "Setting network console $HOST_ADDR:$NETCONSOLE_PORT"
+fi
+
+# if console is serial then disable graphical interface
+if [ "${CONSOLE}" = "serial" ]; then
+	add_opts "-nographic"
+fi
+
+# if -kernel arg is specified then use the kernel provided in command line for boot
+if [ "${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 ${VNC_PORT}"
+
+# start monitor on pty and named socket 'monitor'
+add_opts "-monitor pty -monitor unix:monitor,server,nowait"
+
+# do we do not need to autostart the guest
+if [ "${AUTOSTART}" = "0" ]; then
+	echo "Disabling autostart"
+	add_opts "-S"
+fi
+
+# check if host has bridge network
+BR0_STATUS="`ifconfig | grep br0`"
+if [ "$BR0_STATUS" != "" ]; then
+	setup_bridge_network
+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}
+stop_network