#!/bin/bash

## Check if the script was executed as root
[[ "$EUID" -ne 0 ]] && echo "Please run as root" && exit 1

## Load the config file
source "${BASH_SOURCE%/*}/config"

## Check libvirtd
[[ $(systemctl status libvirtd | grep running) ]] || systemctl start libvirtd && LIBVIRTD=STOPPED

## Memory lock limit
[[ $ULIMIT != $ULIMIT_TARGET ]] && ulimit -l $ULIMIT_TARGET

## Kill the Display Manager
systemctl stop lightdm

## Kill the console
echo 0 > /sys/class/vtconsole/vtcon0/bind
echo 0 > /sys/class/vtconsole/vtcon1/bind
echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind

## Detach the GPU
virsh nodedev-detach $VIRSH_GPU
virsh nodedev-detach $VIRSH_GPU_AUDIO

## Load vfio
modprobe vfio
modprobe vfio_iommu_type1
modprobe vfio-pci

## QEMU (VM) command
qemu-system-x86_64 -runas $VM_USER -enable-kvm \
  -nographic -vga none -parallel none -serial none \
  -m $MACOS_RAM \
  -cpu Penryn,kvm=on,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,$MACOS_OPTIONS\
  -machine pc-q35-2.11 \
  -smp $MACOS_CORES,sockets=1,cores=$(( $MACOS_CORES / 2 )),threads=2 \
  -device vfio-pci,host=$IOMMU_GPU,multifunction=on,x-vga=on,romfile=$VBIOS \
  -device vfio-pci,host=$IOMMU_GPU_AUDIO \
  -usb -device usb-kbd -device usb-tablet \
  -device nec-usb-xhci,id=xhci \
  -netdev user,id=net0 \
  -device e1000-82545em,netdev=net0,id=net0,mac=52:54:00:c9:18:27 \
  -device isa-applesmc,osk="ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc" \
  -drive if=pflash,format=raw,readonly,file=$OVMF \
  -drive if=pflash,format=raw,file=$OVMF_VARS \
  -smbios type=2 \
  -device ide-drive,bus=ide.2,drive=Clover \
  -drive id=Clover,if=none,snapshot=on,format=qcow2,file=$MACOS_CLOVER \
  -device ide-drive,bus=ide.0,drive=ISO \
  -drive id=ISO,if=none,snapshot=on,media=cdrom,file=$MACOS_ISO \
  -device ide-drive,bus=ide.1,drive=HDD \
  -drive id=HDD,file=$MACOS_IMG,media=disk,format=raw,if=none >> $LOG 2>&1 &

## Wait for QEMU
wait

## Unload vfio
modprobe -r vfio-pci
modprobe -r vfio_iommu_type1
modprobe -r vfio

## Reattach the GPU
virsh nodedev-reattach $VIRSH_GPU_AUDIO
virsh nodedev-reattach $VIRSH_GPU

## Reload the framebuffer
echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
echo 1 > /sys/class/vtconsole/vtcon0/bind
echo 1 > /sys/class/vtconsole/vtcon1/bind

## Reload the Display Manager
systemctl start lightdm

## If libvirtd was stopped then stop it
[[ $LIBVIRTD == "STOPPED" ]] && systemctl stop libvirtd

## Restore ulimit
ulimit -l $ULIMIT