| # -*- coding: utf-8 -*- |
| # Copyright (c) 2016 Jason Lowe-Power |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer; |
| # redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution; |
| # neither the name of the copyright holders nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| # Authors: Jason Lowe-Power |
| |
| """ |
| """ |
| |
| import time |
| import argparse |
| |
| import m5 |
| import m5.ticks |
| from m5.objects import * |
| |
| from system import * |
| |
| supported_protocols = ["classic", "MI_example", "MESI_Two_Level", |
| "MOESI_CMP_directory"] |
| supported_cpu_types = ['kvm', 'atomic', 'simple', 'o3'] |
| |
| def parse_options(): |
| parser = argparse.ArgumentParser(description='For use with gem5. Runs a ' |
| 'simple system through Linux boot. Expects the disk image to ' |
| 'call the simulator exit event after boot. Only works with ' |
| 'x86 ISA.') |
| parser.add_argument("--allow_listeners", default=False, |
| action="store_true", |
| help="Listeners disabled by default") |
| parser.add_argument("kernel", help="Path to the kernel binary to boot") |
| parser.add_argument("disk", help="Path to the disk image to boot") |
| parser.add_argument("cpu_type", choices=supported_cpu_types, |
| help="The type of CPU to use in the system") |
| parser.add_argument("mem_sys", choices=supported_protocols, |
| help="Type of memory system or coherence protocol") |
| parser.add_argument("num_cpus", type=int, help="Number of CPU cores") |
| parser.add_argument("boot_type", choices=["init", "systemd"], |
| help="How to boot the kernel. Either to a simple init " |
| "script or all of the way through systemd") |
| |
| return parser.parse_args() |
| |
| if __name__ == "__m5_main__": |
| |
| args = parse_options() |
| |
| # create the system we are going to simulate |
| if args.mem_sys == "classic": |
| system = MySystem(args.kernel, args.disk, args.cpu_type, args.num_cpus) |
| else: |
| system = MyRubySystem(args.kernel, args.disk, args.cpu_type, |
| args.mem_sys, args.num_cpus) |
| |
| if args.boot_type == "init": |
| # Simply run "exit.sh" |
| system.workload.command_line += ' init=/root/exit.sh' |
| |
| # set up the root SimObject and start the simulation |
| root = Root(full_system = True, system = system) |
| |
| if system.getHostParallel(): |
| # Required for running kvm on multiple host cores. |
| # Uses gem5's parallel event queue feature |
| # Note: The simulator is quite picky about this number! |
| root.sim_quantum = int(1e9) # 1 ms |
| |
| # Required for long-running jobs |
| if not args.allow_listeners: |
| m5.disableAllListeners() |
| |
| # instantiate all of the objects we've created above |
| m5.instantiate() |
| |
| globalStart = time.time() |
| |
| print("Running the simulation") |
| exit_event = m5.simulate() |
| |
| if exit_event.getCause() != "m5_exit instruction encountered": |
| print("Failed to exit correctly") |
| exit(1) |
| else: |
| print("Success!") |
| exit(0) |