vasilito
2f3b4f6a60
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
142 lines
3.9 KiB
Bash
Executable File
142 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Launch or validate the IOMMU path in QEMU with an AMD IOMMU device.
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set -euo pipefail
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find_uefi_firmware() {
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local candidates=(
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"/usr/share/ovmf/x64/OVMF.4m.fd"
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"/usr/share/OVMF/x64/OVMF.4m.fd"
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"/usr/share/ovmf/x64/OVMF_CODE.4m.fd"
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"/usr/share/OVMF/x64/OVMF_CODE.4m.fd"
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"/usr/share/ovmf/OVMF.fd"
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"/usr/share/OVMF/OVMF_CODE.fd"
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"/usr/share/qemu/edk2-x86_64-code.fd"
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)
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local path
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for path in "${candidates[@]}"; do
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if [[ -f "$path" ]]; then
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printf '%s\n' "$path"
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return 0
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fi
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done
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return 1
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}
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# Print usage information
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usage() {
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cat << USAGE
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Usage: $(basename "$0") [--check] [config] [extra qemu args...]
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Launch or validate QEMU with an AMD IOMMU device.
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Options:
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--help Show this help message
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--check Boot and verify the guest reaches a login prompt
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Arguments:
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config Optional config name (default: redbear-desktop)
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extra qemu args Additional arguments appended to the QEMU command
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Environment:
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QEMUFLAGS Additional flags (prepended to device amd-iommu)
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Examples:
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$(basename "$0")
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$(basename "$0") --check
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$(basename "$0") redbear-desktop -m 4G
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USAGE
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exit 0
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}
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check_mode=0
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filtered_args=()
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config="redbear-desktop"
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for arg in "$@"; do
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case "$arg" in
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--help|-h|help)
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usage
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;;
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--check)
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check_mode=1
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;;
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redbear-*)
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config="$arg"
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;;
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*)
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filtered_args+=("$arg")
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;;
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esac
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done
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firmware="$(find_uefi_firmware)" || {
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echo "ERROR: no usable x86_64 UEFI firmware found" >&2
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exit 1
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}
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arch="${ARCH:-$(uname -m)}"
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image="build/$arch/$config/harddrive.img"
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extra="build/$arch/$config/extra.img"
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extra_qemu_args="${filtered_args[*]:-}"
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if [[ ! -f "$image" ]]; then
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echo "ERROR: missing image $image" >&2
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echo "Build it first with: ./local/scripts/build-redbear.sh $config" >&2
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exit 1
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fi
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if [[ ! -f "$extra" ]]; then
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truncate -s 1g "$extra"
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fi
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pkill -f "qemu-system-x86_64.*$image" 2>/dev/null || true
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sleep 1
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if [[ "$check_mode" -eq 1 ]]; then
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expect <<EOF
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log_user 1
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set timeout 240
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spawn qemu-system-x86_64 -name {Red Bear OS x86_64} -device qemu-xhci -device amd-iommu -smp 4 -m 2048 -bios $firmware -chardev stdio,id=debug,signal=off,mux=on -serial chardev:debug -mon chardev=debug -machine q35 -device ich9-intel-hda -device hda-output -device virtio-net,netdev=net0 -netdev user,id=net0 -object filter-dump,id=f1,netdev=net0,file=build/$arch/$config/network.pcap -nographic -vga none -drive file=$image,format=raw,if=none,id=drv0 -device nvme,drive=drv0,serial=NVME_SERIAL -drive file=$extra,format=raw,if=none,id=drv1 -device nvme,drive=drv1,serial=NVME_EXTRA -enable-kvm -cpu host $extra_qemu_args
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expect -re {PCI .*1022:1419}
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expect "login:"
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send "root\r"
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expect "assword:"
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send "password\r"
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expect "Type 'help' for available commands."
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send "redbear-phase-iommu-check\r"
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expect "Red Bear OS IOMMU Runtime Check"
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expect "units_detected="
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expect "units_initialized_now="
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expect "units_initialized_after="
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expect "events_drained="
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send "shutdown\r"
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expect eof
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EOF
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echo "IOMMU first-use validation path completed via guest runtime check"
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exit 0
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fi
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exec qemu-system-x86_64 \
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-name "Red Bear OS x86_64" \
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-device qemu-xhci \
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-device amd-iommu \
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-smp 4 \
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-m 2048 \
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-bios "$firmware" \
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-chardev stdio,id=debug,signal=off,mux=on \
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-serial chardev:debug \
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-mon chardev=debug \
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-machine q35 \
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-device ich9-intel-hda -device hda-output \
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-device virtio-net,netdev=net0 \
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-netdev user,id=net0 \
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-object filter-dump,id=f1,netdev=net0,file="build/$arch/$config/network.pcap" \
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-nographic -vga none \
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-drive file="$image",format=raw,if=none,id=drv0 \
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-device nvme,drive=drv0,serial=NVME_SERIAL \
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-drive file="$extra",format=raw,if=none,id=drv1 \
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-device nvme,drive=drv1,serial=NVME_EXTRA \
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-enable-kvm -cpu host \
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$extra_qemu_args
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