mirror of
https://github.com/hexagonal-sun/moss-kernel.git
synced 2026-04-18 14:19:01 -04:00
4a98779020
Add a virtio-rng entropy source driver that registers with the kernel RNG subsystem. Introduce `ProbeError::NoMatch` so virtio drivers can silently reject empty or wrong-type MMIO slots without spamming the boot log with fatal errors or leaving devices stuck in the deferred queue.
71 lines
2.2 KiB
Python
Executable File
71 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import subprocess
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parser = argparse.ArgumentParser(description="QEMU runner")
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parser.add_argument("elf_executable", help="Location of compiled ELF executable to run")
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# QEMU options
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parser.add_argument("--init", default="/bin/sh", help="Location of the init process (in the rootfs)")
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parser.add_argument("--rootfs", default="moss.img", help="Location of the root filesystem image to use")
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parser.add_argument("--cpu", default="cortex-a72")
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parser.add_argument("--smp", default=4, help="Number of CPU cores to use")
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parser.add_argument("--memory", default="2G")
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parser.add_argument("--debug", action="store_true", help="Enable QEMU debugging")
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parser.add_argument("--display", action="store_true", help="Add a display device to the VM")
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args = parser.parse_args()
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elf_executable = args.elf_executable
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bin_executable_location = elf_executable.replace(".elf", "") + ".bin"
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# Convert the ELF executable to a binary format
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subprocess.run(["aarch64-none-elf-objcopy", "-O", "binary", elf_executable, bin_executable_location], check=True)
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append_args = ""
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if args.init.split("/")[-1] in ["bash", "sh"]:
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append_args = f"--init={args.init} --init-arg=-i"
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else:
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append_args = f"--init={args.init}"
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default_args = {
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"-M": "virt,gic-version=3",
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"-initrd": args.rootfs,
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"-cpu": args.cpu,
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"-m": args.memory,
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"-smp": str(args.smp),
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"-nographic": None,
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"-s": None,
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"-kernel": bin_executable_location,
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"-append": f"{append_args} --rootfs=ext4fs --automount=/dev,devfs --automount=/tmp,tmpfs --automount=/proc,procfs --automount=/sys,sysfs",
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}
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# Arguments that can appear multiple times (e.g. -device)
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extra_args = ["-device", "virtio-rng-device"]
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if args.debug:
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default_args["-S"] = None
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if args.display:
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del default_args["-nographic"]
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default_args["-global"] = "virtio-mmio.force-legacy=false"
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default_args["-nic"] = "none"
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# Add uart
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default_args["-serial"] = "stdio"
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extra_args += ["-device", "virtio-gpu-device"]
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qemu_command = ["qemu-system-aarch64"]
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for key, value in default_args.items():
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qemu_command.append(key)
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if value is not None:
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qemu_command.append(value)
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qemu_command += extra_args
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subprocess.run(qemu_command, check=True)
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