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Diffstat (limited to 'configs/common/FileSystemConfig.py')
| -rw-r--r-- | configs/common/FileSystemConfig.py | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/configs/common/FileSystemConfig.py b/configs/common/FileSystemConfig.py new file mode 100644 index 000000000..561cfe659 --- /dev/null +++ b/configs/common/FileSystemConfig.py @@ -0,0 +1,175 @@ +# Copyright (c) 2015 Advanced Micro Devices, Inc. +# All rights reserved +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# Authors: David Hashe + +from __future__ import print_function + +import m5 +from m5.objects import * +from m5.util.convert import * + +import operator, os, platform, getpass +from os import mkdir, makedirs, getpid, listdir, stat, access +from pwd import getpwuid +from os.path import join as joinpath +from os.path import isdir +from shutil import rmtree, copyfile + +def hex_mask(terms): + dec_mask = reduce(operator.or_, [2**i for i in terms], 0) + return "%08x" % dec_mask + +def file_append(path, contents): + with open(joinpath(*path), 'a') as f: + f.write(str(contents)) + +def replace_tree(path): + if isdir(path): + rmtree(path) + mkdir(path) + +def config_filesystem(options): + fsdir = joinpath(m5.options.outdir, 'fs') + replace_tree(fsdir) + + # Set up /proc + procdir = joinpath(fsdir, 'proc') + mkdir(procdir) + + for i in xrange(options.num_cpus): + one_cpu = 'processor : 0\n' + \ + 'vendor_id : Generic\n' + \ + 'cpu family : 0\n' + \ + 'model : 0\n' + \ + 'model name : Generic\n' + \ + 'stepping : 0\n' + \ + 'cpu MHz : %0.3d\n' \ + % (toFrequency(options.cpu_clock)/mega) + \ + 'cache size: : %dK\n' \ + % (toMemorySize(options.l2_size)/kibi) + \ + 'physical id : 0\n' + \ + 'siblings : %s\n' \ + % options.num_cpus + \ + 'core id : %d\n' \ + % i + \ + 'cpu cores : %d\n' \ + % options.num_cpus + \ + 'fpu : yes\n' + \ + 'fpu exception : yes\n' + \ + 'cpuid level : 1\n' + \ + 'wp : yes\n' + \ + 'flags : fpu\n' + \ + 'cache alignment : %d\n' \ + % options.cacheline_size + \ + '\n' + file_append((procdir, 'cpuinfo'), one_cpu) + + file_append((procdir, 'stat'), 'cpu 0 0 0 0 0 0 0\n') + for i in xrange(options.num_cpus): + file_append((procdir, 'stat'), 'cpu%d 0 0 0 0 0 0 0\n' % i) + + # Set up /sys + sysdir = joinpath(fsdir, 'sys') + mkdir(sysdir) + + # Set up /sys/devices/system/cpu + cpudir = joinpath(sysdir, 'devices', 'system', 'cpu') + makedirs(cpudir) + + file_append((cpudir, 'online'), '0-%d' % (options.num_cpus-1)) + file_append((cpudir, 'possible'), '0-%d' % (options.num_cpus-1)) + + # Set up /tmp + tmpdir = joinpath(fsdir, 'tmp') + replace_tree(tmpdir) + +def register_node(cpu_list, mem, node_number): + nodebasedir = joinpath(m5.options.outdir, 'fs', 'sys', 'devices', + 'system', 'node') + + nodedir = joinpath(nodebasedir,'node%d' % node_number) + makedirs(nodedir) + + file_append((nodedir, 'cpumap'), hex_mask(cpu_list)) + file_append((nodedir, 'meminfo'), + 'Node %d MemTotal: %dkB' % (node_number, + toMemorySize(str(mem))/kibi)) + +def register_cpu(physical_package_id, core_siblings, + core_id, thread_siblings): + cpudir = joinpath(m5.options.outdir, 'fs', 'sys', 'devices', 'system', + 'cpu', 'cpu%d' % core_id) + + if not isdir(joinpath(cpudir, 'topology')): + makedirs(joinpath(cpudir, 'topology')) + if not isdir(joinpath(cpudir, 'cache')): + makedirs(joinpath(cpudir, 'cache')) + + file_append((cpudir, 'online'), '1') + file_append((cpudir, 'topology', 'physical_package_id'), + physical_package_id) + file_append((cpudir, 'topology', 'core_siblings'), + hex_mask(core_siblings)) + file_append((cpudir, 'topology', 'core_id'), core_id) + file_append((cpudir, 'topology', 'thread_siblings'), + hex_mask(thread_siblings)) + +def register_cache(level, idu_type, size, line_size, assoc, cpus): + fsdir = joinpath(m5.options.outdir, 'fs') + for i in cpus: + cachedir = joinpath(fsdir, 'sys', 'devices', 'system', 'cpu', + 'cpu%d' % i, 'cache') + + j = 0 + while isdir(joinpath(cachedir, 'index%d' % j)): + j += 1 + indexdir = joinpath(cachedir, 'index%d' % j) + makedirs(indexdir) + + file_append((indexdir, 'level'), level) + file_append((indexdir, 'type'), idu_type) + file_append((indexdir, 'size'), "%dK" % (toMemorySize(size)/kibi)) + file_append((indexdir, 'coherency_line_size'), line_size) + + # Since cache size = number of indices * associativity * block size + num_sets = toMemorySize(size) / int(assoc) * int(line_size) + + file_append((indexdir, 'number_of_sets'), num_sets) + file_append((indexdir, 'physical_line_partition'), '1') + file_append((indexdir, 'shared_cpu_map'), hex_mask(cpus)) + +def redirect_paths(chroot): + # Redirect filesystem syscalls from src to the first matching dests + redirect_paths = [RedirectPath(app_path = "/proc", + host_paths = ["%s/fs/proc" % m5.options.outdir]), + RedirectPath(app_path = "/sys", + host_paths = ["%s/fs/sys" % m5.options.outdir]), + RedirectPath(app_path = "/tmp", + host_paths = ["%s/fs/tmp" % m5.options.outdir]), + RedirectPath(app_path = "/", + host_paths = ["%s" % chroot])] + return redirect_paths |