#!/usr/bin/env bash

# Special thanks to:

# https://github.com/Leoyzen/KVM-Opencore

# https://github.com/thenickdude/KVM-Opencore/

# https://github.com/qemu/qemu/blob/master/docs/usb2.txt

#

# qemu-img create -f qcow2 windows_hdd.img 512G

#

# echo 1 > /sys/module/kvm/parameters/ignore_msrs (this is required)

#

# wget https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/virtio-win-0.1.208-1/virtio-win-0.1.208.iso

#

# GPU passthrough is terrible with AMD cards which suffer from the "AMD reset

# bug". NVIDIA cards work very well with Windows VMs.

############################################################################

# NOTE: Tweak the "MY_OPTIONS" line in case you are having booting problems!

############################################################################

MY_OPTIONS="+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check"

# This script works for Big Sur, Catalina, Mojave, and High Sierra. Tested with

# macOS 10.15.6, macOS 10.14.6, and macOS 10.13.6

ALLOCATED_RAM="3072" # MiB

CPU_SOCKETS="1"

CPU_CORES="2"

CPU_THREADS="2"

REPO_PATH="."

OVMF_DIR="."

# Note: This script assumes that you are doing CPU + GPU passthrough. This

# script will need to be modified for your specific needs!

#

# We recommend doing the initial macOS installation without using passthrough

# stuff. In other words, don't use this script for the initial macOS

# installation.

# shellcheck disable=SC2054

args=(

-enable-kvm -m "$ALLOCATED_RAM" -cpu host,kvm=on,+invtsc,vmware-cpuid-freq=on,"$MY_OPTIONS"

-machine q35

-usb -device usb-kbd -device usb-tablet

-smp "$CPU_THREADS",cores="$CPU_CORES",sockets="$CPU_SOCKETS"

-device usb-ehci,id=ehci

-vga none

# 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev ef)

# Subsystem: Sapphire Technology Limited Nitro+ Radeon RX 570/580/590 [1da2:e366]

# 01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] [1002:aaf0]

# Subsystem: Sapphire Technology Limited Ellesmere HDMI Audio [Radeon RX 470/480 / 570/580/590] [1da2:aaf0]

-device vfio-pci,host=01:00.0,multifunction=on

# -device vfio-pci,host=01:00.0,multifunction=on,romfile=gpu_original_bios.bin

-device vfio-pci,host=01:00.1

# ASMedia ASM1142 USB 3.1 Host Controller (comment out as needed)

# 03:00.0 USB controller [0c03]: ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller [1b21:1242]

-device vfio-pci,host=03:00.0,bus=pcie.0

-drive if=pflash,format=raw,readonly,file="$REPO_PATH/$OVMF_DIR/OVMF_CODE.fd"

-drive if=pflash,format=raw,file="$REPO_PATH/$OVMF_DIR/OVMF_VARS-1024x768.fd"

-drive file="$REPO_PATH/windows.iso",media=cdrom # Win10_21H2_English_x64.iso from Microsoft works great

-drive file="$REPO_PATH/virtio-win-0.1.208.iso",media=cdrom

-drive if=virtio,index=0,file="$REPO_PATH/windows_hdd.img",format=qcow2

# -netdev tap,id=net0,ifname=tap0,script=no,downscript=no -device e1000e,netdev=net0,id=net0,mac=52:54:00:c9:18:27

-netdev user,id=net0 -device e1000e,netdev=net0,id=net0,mac=52:54:00:c9:18:27

-monitor stdio

-display none

)

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