gem5/tests/configs/simple-timing-ruby.py

# Copyright (c) 2006-2007 The Regents of The University of Michigan
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# Authors: Steve Reinhardt

import m5
from m5.objects import *
from m5.defines import buildEnv
from m5.util import addToPath
import os, optparse, sys

m5.util.addToPath('../configs/common')
m5.util.addToPath('../configs/')

from ruby import Ruby
import Options

parser = optparse.OptionParser()
Options.addCommonOptions(parser)

# Add the ruby specific and protocol specific options
Ruby.define_options(parser)

(options, args) = parser.parse_args()

#
# Set the default cache size and associativity to be very small to encourage
# races between requests and writebacks.
#
options.l1d_size="256B"
options.l1i_size="256B"
options.l2_size="512B"
options.l3_size="1kB"
options.l1d_assoc=2
options.l1i_assoc=2
options.l2_assoc=2
options.l3_assoc=2

# this is a uniprocessor only test
options.num_cpus = 1
cpu = TimingSimpleCPU(cpu_id=0)
system = System(cpu = cpu)

# Dummy voltage domain for all our clock domains
system.voltage_domain = VoltageDomain(voltage = options.sys_voltage)
system.clk_domain = SrcClockDomain(clock = '1GHz',
                                   voltage_domain = system.voltage_domain)

# Create a seperate clock domain for components that should run at
# CPUs frequency
system.cpu.clk_domain = SrcClockDomain(clock = '2GHz',
                                       voltage_domain = system.voltage_domain)

system.mem_ranges = AddrRange('256MB')
Ruby.create_system(options, False, system)

# Create a separate clock for Ruby
system.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock,
                                        voltage_domain = system.voltage_domain)

assert(len(system.ruby._cpu_ports) == 1)

# create the interrupt controller
cpu.createInterruptController()

#
# Tie the cpu cache ports to the ruby cpu ports and
# physmem, respectively
#
cpu.connectAllPorts(system.ruby._cpu_ports[0])

# -----------------------
# run simulation
# -----------------------

root = Root(full_system = False, system = system)
root.system.mem_mode = 'timing'

# Not much point in this being higher than the L1 latency
m5.ticks.setGlobalFrequency('1ns')