OSX-KVM/boot-macOS-headless.sh

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#!/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 mac_hdd_ng.img 128G
#
# echo 1 | sudo tee -a /sys/module/kvm/parameters/ignore_msrs # this is required
#
# Usage:
#
# $ boot-macOS-headless.sh
#
# (qemu) change vnc password
# Password: ********
#
# Note: Using RealVNC client, connect to `<localhost:5901>`.
# E.g. `vncviewer localhost:5901`
############################################################################
# NOTE: Tweak the "MY_OPTIONS" line in case you are having booting problems!
############################################################################
# Changelog:
# - Add support for 'savevm'
# - Fix cpuid related warning on EPYC
# - Fix 'savevm' support
MY_OPTIONS="+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check"
# This script works for Catalina as well as Mojave. Tested with macOS 10.14.6 and macOS 10.15.6.
ALLOCATED_RAM="3072" # MiB
CPU_SOCKETS="1"
CPU_CORES="2"
CPU_THREADS="4"
REPO_PATH="."
OVMF_DIR="."
# for snapshots
export TMPDIR=$PWD
# shellcheck disable=SC2054
args=(
-enable-kvm -m "$ALLOCATED_RAM" -cpu Penryn,kvm=on,vendor=GenuineIntel,+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 isa-applesmc,osk="ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc"
-drive if=pflash,format=raw,readonly,snapshot=off,file="$REPO_PATH/$OVMF_DIR/OVMF_CODE.fd"
-drive if=pflash,format=raw,snapshot=on,file="$REPO_PATH/$OVMF_DIR/OVMF_VARS-1024x768.fd"
-smbios type=2
-device ich9-ahci,id=sata
# -drive id=OpenCoreBoot,if=none,snapshot=on,format=qcow2,file="$REPO_PATH/OpenCore/OpenCore.qcow2"
-device ide-hd,bus=sata.2,drive=OpenCoreBoot
-device ide-hd,bus=sata.3,drive=InstallMedia
-drive id=InstallMedia,if=none,file="$REPO_PATH/BaseSystem.img",format=raw
# -drive id=MacHDD,if=none,snapshot=on,file="$REPO_PATH/mac_hdd_ng.img",format=qcow2
-drive id=MacHDD,if=none,snapshot=off,file="$REPO_PATH/mac_hdd_ng.img",format=qcow2
-device ide-hd,bus=sata.4,drive=MacHDD
-netdev user,id=net0 -device vmxnet3,netdev=net0,id=net0,mac=52:54:00:c9:18:27
-monitor stdio
-vga vmware
-display none
-vnc 0.0.0.0:1,password -k en-us
)
qemu-system-x86_64 "${args[@]}"