113012Sandreas.sandberg@arm.com# Copyright (c) 2012, 2018 ARM Limited 213012Sandreas.sandberg@arm.com# All rights reserved. 313012Sandreas.sandberg@arm.com# 413012Sandreas.sandberg@arm.com# The license below extends only to copyright in the software and shall 513012Sandreas.sandberg@arm.com# not be construed as granting a license to any other intellectual 613012Sandreas.sandberg@arm.com# property including but not limited to intellectual property relating 713012Sandreas.sandberg@arm.com# to a hardware implementation of the functionality of the software 813012Sandreas.sandberg@arm.com# licensed hereunder. You may use the software subject to the license 913012Sandreas.sandberg@arm.com# terms below provided that you ensure that this notice is replicated 1013012Sandreas.sandberg@arm.com# unmodified and in its entirety in all distributions of the software, 1113012Sandreas.sandberg@arm.com# modified or unmodified, in source code or in binary form. 1213012Sandreas.sandberg@arm.com# 1313012Sandreas.sandberg@arm.com# Redistribution and use in source and binary forms, with or without 1413012Sandreas.sandberg@arm.com# modification, are permitted provided that the following conditions are 1513012Sandreas.sandberg@arm.com# met: redistributions of source code must retain the above copyright 1613012Sandreas.sandberg@arm.com# notice, this list of conditions and the following disclaimer; 1713012Sandreas.sandberg@arm.com# redistributions in binary form must reproduce the above copyright 1813012Sandreas.sandberg@arm.com# notice, this list of conditions and the following disclaimer in the 1913012Sandreas.sandberg@arm.com# documentation and/or other materials provided with the distribution; 2013012Sandreas.sandberg@arm.com# neither the name of the copyright holders nor the names of its 2113012Sandreas.sandberg@arm.com# contributors may be used to endorse or promote products derived from 2213012Sandreas.sandberg@arm.com# this software without specific prior written permission. 2313012Sandreas.sandberg@arm.com# 2413012Sandreas.sandberg@arm.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2513012Sandreas.sandberg@arm.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2613012Sandreas.sandberg@arm.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2713012Sandreas.sandberg@arm.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2813012Sandreas.sandberg@arm.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2913012Sandreas.sandberg@arm.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3013012Sandreas.sandberg@arm.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3113012Sandreas.sandberg@arm.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3213012Sandreas.sandberg@arm.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3313012Sandreas.sandberg@arm.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3413012Sandreas.sandberg@arm.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3513012Sandreas.sandberg@arm.com# 3613012Sandreas.sandberg@arm.com# Authors: Andreas Sandberg 3713012Sandreas.sandberg@arm.com 3813012Sandreas.sandberg@arm.comfrom m5.params import * 3913665Sandreas.sandberg@arm.comfrom m5.objects.AtomicSimpleCPU import AtomicSimpleCPU 4013012Sandreas.sandberg@arm.com 4113012Sandreas.sandberg@arm.comclass NonCachingSimpleCPU(AtomicSimpleCPU): 4213012Sandreas.sandberg@arm.com """Simple CPU model based on the atomic CPU. Unlike the atomic CPU, 4313012Sandreas.sandberg@arm.com this model causes the memory system to bypass caches and is 4413012Sandreas.sandberg@arm.com therefore slightly faster in some cases. However, its main purpose 4513012Sandreas.sandberg@arm.com is as a substitute for hardware virtualized CPUs when 4613012Sandreas.sandberg@arm.com stress-testing the memory system. 4713012Sandreas.sandberg@arm.com 4813012Sandreas.sandberg@arm.com """ 4913012Sandreas.sandberg@arm.com 5013012Sandreas.sandberg@arm.com type = 'NonCachingSimpleCPU' 5113012Sandreas.sandberg@arm.com cxx_header = "cpu/simple/noncaching.hh" 5213012Sandreas.sandberg@arm.com 5313012Sandreas.sandberg@arm.com @classmethod 5413012Sandreas.sandberg@arm.com def memory_mode(cls): 5513012Sandreas.sandberg@arm.com return 'atomic_noncaching' 5613012Sandreas.sandberg@arm.com 5713012Sandreas.sandberg@arm.com @classmethod 5813012Sandreas.sandberg@arm.com def support_take_over(cls): 5913012Sandreas.sandberg@arm.com return True 6013012Sandreas.sandberg@arm.com 61