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 Power 29 30""" This file creates a barebones system and executes 'hello', a simple Hello 31World application. 32See Part 1, Chapter 2: Creating a simple configuration script in the 33learning_gem5 book for more information about this script. 34 35IMPORTANT: If you modify this file, it's likely that the Learning gem5 book 36 also needs to be updated. For now, email Jason <power.jg@gmail.com> 37 38""" 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 45# create the system we are going to simulate 46system = System() 47 48# Set the clock fequency of the system (and all of its children) 49system.clk_domain = SrcClockDomain() 50system.clk_domain.clock = '1GHz' 51system.clk_domain.voltage_domain = VoltageDomain() 52 53# Set up the system 54system.mem_mode = 'timing' # Use timing accesses 55system.mem_ranges = [AddrRange('512MB')] # Create an address range 56 57# Create a simple CPU 58system.cpu = TimingSimpleCPU() 59 60# Create a memory bus, a system crossbar, in this case 61system.membus = SystemXBar() 62 63# Hook the CPU ports up to the membus 64system.cpu.icache_port = system.membus.slave 65system.cpu.dcache_port = system.membus.slave 66 67# create the interrupt controller for the CPU and connect to the membus 68system.cpu.createInterruptController() 69 70# For x86 only, make sure the interrupts are connected to the memory 71# Note: these are directly connected to the memory bus and are not cached 72if m5.defines.buildEnv['TARGET_ISA'] == "x86":
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