gem5/configs/example/fs.py

# Copyright (c) 2006 The Regents of The University of Michigan
# 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: Ali Saidi

import optparse, os, sys

import m5
from m5.objects import *
m5.AddToPath('../common')
from FSConfig import *
from SysPaths import *
from Benchmarks import *
import Simulation
from Caches import *

if not m5.build_env['FULL_SYSTEM']:
    m5.panic("This script requires full-system mode (ALPHA_FS).")

# Get paths we might need.  It's expected this file is in m5/configs/example.
config_path = os.path.dirname(os.path.abspath(__file__))
config_root = os.path.dirname(config_path)

parser = optparse.OptionParser()

# Benchmark options
parser.add_option("--l2cache", action="store_true")
parser.add_option("--dual", action="store_true",
                  help="Simulate two systems attached with an ethernet link")
parser.add_option("-b", "--benchmark", action="store", type="string",
                  dest="benchmark",
                  help="Specify the benchmark to run. Available benchmarks: %s"\
                  % DefinedBenchmarks)

# Metafile options
parser.add_option("--etherdump", action="store", type="string", dest="etherdump",
                  help="Specify the filename to dump a pcap capture of the" \
                  "ethernet traffic")

execfile(os.path.join(config_root, "common", "Options.py"))

(options, args) = parser.parse_args()

if args:
    print "Error: script doesn't take any positional arguments"
    sys.exit(1)

# driver system CPU is always simple... note this is an assignment of
# a class, not an instance.
DriveCPUClass = AtomicSimpleCPU
drive_mem_mode = 'atomic'

# system under test can be any CPU
(TestCPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)

TestCPUClass.clock = '2GHz'
DriveCPUClass.clock = '2GHz'

if options.benchmark:
    try:
        bm = Benchmarks[options.benchmark]
    except KeyError:
        print "Error benchmark %s has not been defined." % options.benchmark
        print "Valid benchmarks are: %s" % DefinedBenchmarks
        sys.exit(1)
else:
    if options.dual:
        bm = [SysConfig(), SysConfig()]
    else:
        bm = [SysConfig()]

test_sys = makeLinuxAlphaSystem(test_mem_mode, bm[0])
np = options.num_cpus

if options.l2cache:
    test_sys.l2 = L2Cache(size = '2MB')
    test_sys.tol2bus = Bus()
    test_sys.l2.cpu_side = test_sys.tol2bus.port
    test_sys.l2.mem_side = test_sys.membus.port

test_sys.cpu = [TestCPUClass(cpu_id=i) for i in xrange(np)]
for i in xrange(np):
    if options.caches:
        test_sys.cpu[i].addPrivateSplitL1Caches(L1Cache(size = '32kB'),
                                                L1Cache(size = '64kB'))

    if options.l2cache:
        test_sys.cpu[i].connectMemPorts(test_sys.tol2bus)
    else:
        test_sys.cpu[i].connectMemPorts(test_sys.membus)

if len(bm) == 2:
    drive_sys = makeLinuxAlphaSystem(drive_mem_mode, bm[1])
    drive_sys.cpu = DriveCPUClass(cpu_id=0)
    drive_sys.cpu.connectMemPorts(drive_sys.membus)
    root = makeDualRoot(test_sys, drive_sys, options.etherdump)
elif len(bm) == 1:
    root = Root(clock = '1THz', system = test_sys)
else:
    print "Error I don't know how to create more than 2 systems."
    sys.exit(1)

Simulation.run(options, root, test_sys, FutureClass)