75286e0dfb
As mentioned on the JIRA issue, uncacheable requests done after cacheable requests had been done to the address make the cache writeback and write trash data to memory. We believe that the kernel must be doing earlier invalidation by set and way earlier on to prevent this, but that is not implemented in gem5 yet. The problem can be worked around by booting in atomic without caches and checkpointing after init, because uncacheable accesses are only done on early stages of CPU bringup, which is the more common use case anyways. The aarch64 Linux kernel developers have stated that set and way invalidates are not going to be used in aarch64, which further reduces the importance of implementing this immediatly JIRA: https://gem5.atlassian.net/browse/GEM5-640 Change-Id: Ieba31e707dcc09693d7a87ed9d51c3d1ffa3abe0 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33015 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com> Tested-by: kokoro <noreply+kokoro@google.com>
120 lines
4.3 KiB
Python
120 lines
4.3 KiB
Python
# Copyright (c) 2019-2020 ARM Limited
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# All rights reserved
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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'''
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Arm FS simulation tests
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'''
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from os.path import join as joinpath
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from testlib import *
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arm_fs_quick_tests = [
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'realview64-simple-atomic',
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'realview64-simple-atomic-dual',
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'realview64-simple-atomic-checkpoint',
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'realview64-simple-timing',
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'realview64-simple-timing-dual',
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'realview64-switcheroo-atomic',
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'realview64-switcheroo-timing',
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]
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arm_fs_long_tests = [
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'realview-simple-atomic',
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'realview-simple-atomic-checkpoint',
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'realview-simple-timing',
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'realview-switcheroo-atomic',
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'realview-switcheroo-timing',
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'realview-o3',
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'realview-o3-checker',
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'realview-minor',
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'realview-switcheroo-noncaching-timing',
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'realview-switcheroo-o3',
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'realview-switcheroo-full',
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'realview64-o3',
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'realview64-o3-checker',
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'realview64-o3-dual',
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'realview64-minor',
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'realview64-minor-dual',
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'realview64-switcheroo-o3',
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'realview64-switcheroo-full',
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'realview-simple-timing-ruby',
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'realview64-simple-timing-ruby',
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'realview64-simple-timing-dual-ruby',
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# https://gem5.atlassian.net/browse/GEM5-640
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#'realview-simple-atomic-dual',
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#'realview-simple-timing-dual',
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#'realview-o3-dual',
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#'realview-minor-dual',
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#'realview-simple-timing-dual-ruby',
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]
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tarball = 'aarch-system-201901106.tar.bz2'
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url = config.resource_url + "/arm/" + tarball
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filepath = os.path.dirname(os.path.abspath(__file__))
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path = config.bin_path if config.bin_path else filepath
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arm_fs_binaries = DownloadedArchive(url, path, tarball)
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for name in arm_fs_quick_tests:
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args = [
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joinpath(config.base_dir, 'tests', 'configs', name + '.py'),
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path
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]
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gem5_verify_config(
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name=name,
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verifiers=(), # Add basic stat verifiers
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config=joinpath(filepath, 'run.py'),
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config_args=args,
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valid_isas=(constants.arm_tag,),
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length=constants.quick_tag,
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fixtures=(arm_fs_binaries,)
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)
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for name in arm_fs_long_tests:
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args = [
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joinpath(config.base_dir, 'tests', 'configs', name + '.py'),
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path
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]
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gem5_verify_config(
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name=name,
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verifiers=(), # TODO: Add basic stat verifiers
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config=joinpath(filepath, 'run.py'),
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config_args=args,
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valid_isas=(constants.arm_tag,),
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length=constants.long_tag,
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fixtures=(arm_fs_binaries,)
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)
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