e9fcfb3c16
Change-Id: I049f2e97ad00d76341c2aeeaa02279862a8a4d71 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/25416 Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
247 lines
10 KiB
Python
247 lines
10 KiB
Python
# Copyright (c) 2019 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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# Copyright (c) 2015 Advanced Micro Devices, Inc.
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# All rights reserved
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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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from __future__ import print_function
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import m5
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from m5.objects import *
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from m5.util.convert import *
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import operator, os, platform, getpass
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from os import mkdir, makedirs, getpid, listdir, stat, access
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from pwd import getpwuid
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from os.path import join as joinpath
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from os.path import isdir
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from shutil import rmtree, copyfile
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def hex_mask(terms):
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dec_mask = reduce(operator.or_, [2**i for i in terms], 0)
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return "%08x" % dec_mask
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def file_append(path, contents):
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with open(joinpath(*path), 'a') as f:
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f.write(str(contents))
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def replace_tree(path):
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if isdir(path):
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rmtree(path)
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mkdir(path)
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def config_filesystem(system, options = None):
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""" This function parses the system object to create the pseudo file system
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@param system: The system to create the config for
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@param options: An optional argument which contains an Options.py options
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object. This is useful if when use se.py and will set the L2 cache
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size and the clock in /proc/cpuinfo if provided.
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First, this function walks the system object to find all CPUs.
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Then, this function creates the following files with the CPU information
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- /proc/cpuinfo which contains the clock and the L2 size
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(assumes all L2s private and the same size)
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- /proc/stat simply lists all CPUs
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- /sys/devices/system/cpu/online and /sys/devices/system/cpu/possible
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These files list all of the CPUs in this system.
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- /tmp
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These files are created in the `fs` directory in the outdir path.
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"""
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fsdir = joinpath(m5.options.outdir, 'fs')
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replace_tree(fsdir)
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# Set up /proc
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procdir = joinpath(fsdir, 'proc')
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mkdir(procdir)
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try:
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cpus = \
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[obj for obj in system.descendants() if isinstance(obj, BaseCPU)]
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except NameError:
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# BaseCPU is not defined for the NULL ISA
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cpus = []
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cpu_clock = 0
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if hasattr(options, 'cpu_clock'):
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cpu_clock = toFrequency(options.cpu_clock) / mega
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l2_size = 0
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if hasattr(options, 'l2_size'):
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l2_size = toMemorySize(options.l2_size) / kibi
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for i,cpu in enumerate(cpus):
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one_cpu = 'processor : {proc}\n' + \
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'vendor_id : Generic\n' + \
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'cpu family : 0\n' + \
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'model : 0\n' + \
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'model name : Generic\n' + \
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'stepping : 0\n' + \
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'cpu MHz : {clock:0.3f}\n' + \
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'cache size: : {l2_size}K\n' + \
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'physical id : 0\n' + \
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'siblings : {num_cpus}\n' + \
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'core id : {proc}\n' + \
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'cpu cores : {num_cpus}\n' + \
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'fpu : yes\n' + \
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'fpu exception : yes\n' + \
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'cpuid level : 1\n' + \
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'wp : yes\n' + \
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'flags : fpu\n' + \
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'cache alignment : {cacheline_size}\n' + \
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'\n'
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one_cpu = one_cpu.format(proc = i, num_cpus = len(cpus),
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# Note: it would be nice to use cpu.clock, but it hasn't
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# been finalized yet since m5.instantiate() isn't done.
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clock = cpu_clock,
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# Note: this assumes the L2 is private to each core
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l2_size = l2_size,
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cacheline_size=system.cache_line_size.getValue())
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file_append((procdir, 'cpuinfo'), one_cpu)
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file_append((procdir, 'stat'), 'cpu 0 0 0 0 0 0 0\n')
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for i in xrange(len(cpus)):
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file_append((procdir, 'stat'), 'cpu%d 0 0 0 0 0 0 0\n' % i)
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# Set up /sys
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sysdir = joinpath(fsdir, 'sys')
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mkdir(sysdir)
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# Set up /sys/devices/system/cpu
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cpudir = joinpath(sysdir, 'devices', 'system', 'cpu')
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makedirs(cpudir)
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file_append((cpudir, 'online'), '0-%d' % (len(cpus) - 1))
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file_append((cpudir, 'possible'), '0-%d' % (len(cpus) - 1))
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# Set up /tmp
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tmpdir = joinpath(fsdir, 'tmp')
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replace_tree(tmpdir)
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system.redirect_paths = _redirect_paths(options)
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# Setting the interpreter path. This is used to load the
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# guest dynamic linker itself from the elf file.
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interp = getattr(options, 'interp_dir', None)
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if interp:
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from m5.core import setInterpDir
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setInterpDir(interp)
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print("Setting the interpreter path to:", interp,
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"\nFor dynamically linked applications you might still "
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"need to setup the --redirects so that libraries are "
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"found\n")
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def register_node(cpu_list, mem, node_number):
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nodebasedir = joinpath(m5.options.outdir, 'fs', 'sys', 'devices',
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'system', 'node')
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nodedir = joinpath(nodebasedir,'node%d' % node_number)
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makedirs(nodedir)
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file_append((nodedir, 'cpumap'), hex_mask(cpu_list))
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file_append((nodedir, 'meminfo'),
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'Node %d MemTotal: %dkB' % (node_number,
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toMemorySize(str(mem))/kibi))
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def register_cpu(physical_package_id, core_siblings,
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core_id, thread_siblings):
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cpudir = joinpath(m5.options.outdir, 'fs', 'sys', 'devices', 'system',
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'cpu', 'cpu%d' % core_id)
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if not isdir(joinpath(cpudir, 'topology')):
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makedirs(joinpath(cpudir, 'topology'))
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if not isdir(joinpath(cpudir, 'cache')):
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makedirs(joinpath(cpudir, 'cache'))
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file_append((cpudir, 'online'), '1')
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file_append((cpudir, 'topology', 'physical_package_id'),
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physical_package_id)
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file_append((cpudir, 'topology', 'core_siblings'),
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hex_mask(core_siblings))
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file_append((cpudir, 'topology', 'core_id'), core_id)
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file_append((cpudir, 'topology', 'thread_siblings'),
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hex_mask(thread_siblings))
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def register_cache(level, idu_type, size, line_size, assoc, cpus):
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fsdir = joinpath(m5.options.outdir, 'fs')
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for i in cpus:
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cachedir = joinpath(fsdir, 'sys', 'devices', 'system', 'cpu',
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'cpu%d' % i, 'cache')
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j = 0
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while isdir(joinpath(cachedir, 'index%d' % j)):
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j += 1
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indexdir = joinpath(cachedir, 'index%d' % j)
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makedirs(indexdir)
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file_append((indexdir, 'level'), level)
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file_append((indexdir, 'type'), idu_type)
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file_append((indexdir, 'size'), "%dK" % (toMemorySize(size)/kibi))
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file_append((indexdir, 'coherency_line_size'), line_size)
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# Since cache size = number of indices * associativity * block size
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num_sets = toMemorySize(size) / int(assoc) * int(line_size)
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file_append((indexdir, 'number_of_sets'), num_sets)
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file_append((indexdir, 'physical_line_partition'), '1')
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file_append((indexdir, 'shared_cpu_map'), hex_mask(cpus))
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def _redirect_paths(options):
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# Redirect filesystem syscalls from src to the first matching dests
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redirect_paths = [RedirectPath(app_path = "/proc",
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host_paths = ["%s/fs/proc" % m5.options.outdir]),
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RedirectPath(app_path = "/sys",
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host_paths = ["%s/fs/sys" % m5.options.outdir]),
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RedirectPath(app_path = "/tmp",
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host_paths = ["%s/fs/tmp" % m5.options.outdir])]
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# Setting the redirect paths so that the guest dynamic linker
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# can point to the proper /lib collection (e.g. to load libc)
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redirects = getattr(options, 'redirects', [])
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for redirect in redirects:
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app_path, host_path = redirect.split("=")
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redirect_paths.append(
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RedirectPath(app_path = app_path, host_paths = [ host_path ]))
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chroot = getattr(options, 'chroot', None)
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if chroot:
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redirect_paths.append(
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RedirectPath(
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app_path = "/",
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host_paths = ["%s" % os.path.expanduser(chroot)]))
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return redirect_paths
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