1# -*- coding: utf-8 -*-
2# Copyright (c) 2015 Jason Power
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28# Authors: Jason Lowe-Power
29
30""" This file creates a system with Ruby caches and runs the ruby random tester
31See Part 3 in the Learning gem5 book: learning.gem5.org/book/part3
32
33IMPORTANT: If you modify this file, it's likely that the Learning gem5 book
34           also needs to be updated. For now, email Jason <jason@lowepower.com>
35
36"""
37from __future__ import print_function
38from __future__ import absolute_import
39
40# import the m5 (gem5) library created when gem5 is built
41import m5
42# import all of the SimObjects
43from m5.objects import *
44
45from test_caches import TestCacheSystem
46
47# create the system we are going to simulate
48system = System()
49
50# Set the clock fequency of the system (and all of its children)
51system.clk_domain = SrcClockDomain()
52system.clk_domain.clock = '1GHz'
53system.clk_domain.voltage_domain = VoltageDomain()
54
55# Set up the system
56system.mem_mode = 'timing'               # Use timing accesses
57system.mem_ranges = [AddrRange('512MB')] # Create an address range
58
59# Create the tester
60system.tester = RubyTester(checks_to_complete = 100,
61                           wakeup_frequency = 10,
62                           num_cpus = 2)
63
64# Create a simple memory controller and connect it to the membus
65system.mem_ctrl = SimpleMemory(latency="50ns", bandwidth="0GB/s")
66system.mem_ctrl.range = system.mem_ranges[0]
67
68# Create the Ruby System
69system.caches = TestCacheSystem()
70system.caches.setup(system, system.tester, [system.mem_ctrl])
71
72# set up the root SimObject and start the simulation
73root = Root(full_system = False, system = system)
74
75# Not much point in this being higher than the L1 latency
76m5.ticks.setGlobalFrequency('1ns')
77
78# instantiate all of the objects we've created above
79m5.instantiate()
80
81print("Beginning simulation!")
82exit_event = m5.simulate()
83print('Exiting @ tick {} because {}'.format(
84         m5.curTick(), exit_event.getCause())
85     )
86