| # Copyright (c) 2021 The Regents of the University of California |
| # 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 |
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| # 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 |
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| |
| """ |
| This example runs a simple boot exit test. |
| |
| Characteristics |
| --------------- |
| |
| * Runs exclusively on the X86 ISA with the MESI_TWO_LEVEL coherence protocol. |
| """ |
| |
| import m5 |
| from m5.objects import Root |
| |
| import sys |
| import os |
| |
| # This is a lame hack to get the imports working correctly. |
| # TODO: This needs fixed. |
| sys.path.append( |
| os.path.join( |
| os.path.dirname(os.path.abspath(__file__)), |
| os.pardir, |
| os.pardir, |
| os.pardir, |
| ) |
| ) |
| |
| from components_library.runtime import ( |
| get_runtime_coherence_protocol, |
| get_runtime_isa, |
| ) |
| from components_library.boards.x86_board import X86Board |
| from components_library.memory.ddr3_1600_8x8 import DDR3_1600_8x8 |
| from components_library.processors.simple_processor import SimpleProcessor |
| from components_library.processors.cpu_types import CPUTypes |
| from components_library.isas import ISA |
| from components_library.coherence_protocol import CoherenceProtocol |
| |
| import os |
| import subprocess |
| import gzip |
| import shutil |
| |
| # Run a check to ensure the right version of gem5 is being used. |
| if ( |
| get_runtime_coherence_protocol() != CoherenceProtocol.MESI_TWO_LEVEL |
| or get_runtime_isa() != ISA.X86 |
| ): |
| raise EnvironmentError( |
| "The boot-exit-disk_run.py should be run with X86_MESI_Two_Level." |
| ) |
| |
| from components_library.cachehierarchies.\ |
| ruby.mesi_two_level_cache_hierarchy import ( |
| MESITwoLevelCacheHierarchy, |
| ) |
| |
| # Setup the cache heirarchy to be MESI_Two_Level. |
| cache_hierarchy = MESITwoLevelCacheHierarchy( |
| l1d_size="32kB", |
| l1d_assoc=8, |
| l1i_size="32kB", |
| l1i_assoc=8, |
| l2_size="256kB", |
| l2_assoc=16, |
| num_l2_banks=1, |
| ) |
| |
| # Setup the system memory. |
| # Warning: This must be kept at 3GB for now. X86Motherboard does not support |
| # anything else right now! |
| memory = DDR3_1600_8x8(size="3GB") |
| |
| # Setup a single core Timing Processor. |
| processor = SimpleProcessor(cpu_type=CPUTypes.TIMING, num_cores=1) |
| |
| # Setup the motherboard. |
| motherboard = X86Board( |
| clk_freq="3GHz", |
| processor=processor, |
| memory=memory, |
| cache_hierarchy=cache_hierarchy, |
| exit_on_work_items=True, |
| ) |
| |
| motherboard.connect_things() |
| |
| # Download the resources as necessary. |
| thispath = os.path.dirname(os.path.realpath(__file__)) |
| |
| kernel_url = ( |
| "http://dist.gem5.org/dist/v21-0/kernels/x86/static/vmlinux-5.4.49" |
| ) |
| kernel_path = os.path.join(thispath, "vmlinux-5.4.49") |
| if not os.path.exists(kernel_path): |
| subprocess.run(["wget", "-P", thispath, kernel_url]) |
| |
| boot_img_url = ( |
| "http://dist.gem5.org/dist/v21-0/images/x86/ubuntu-18-04/boot-exit.img.gz" |
| ) |
| boot_img_path_gz = os.path.join(thispath, "boot-exit.img.gz") |
| boot_img_path = os.path.join(thispath, "boot-exit.img") |
| |
| if not os.path.exists(boot_img_path): |
| subprocess.run(["wget", "-P", thispath, boot_img_url]) |
| with gzip.open(boot_img_path_gz, "rb") as f: |
| with open(boot_img_path, "wb") as o: |
| shutil.copyfileobj(f, o) |
| |
| # Set the Full System workload. |
| motherboard.set_workload( |
| kernel=kernel_path, disk_image=boot_img_path, command="m5 exit \n" |
| ) |
| |
| |
| # Begin running of the simulation. This will exit once the Linux system boot |
| # is complete. |
| print("Running with ISA: " + get_runtime_isa().name) |
| print("Running with protocol: " + get_runtime_coherence_protocol().name) |
| print() |
| |
| root = Root(full_system=True, system=motherboard) |
| |
| m5.instantiate() |
| |
| print("Beginning simulation!") |
| exit_event = m5.simulate() |
| print( |
| "Exiting @ tick {} because {}.".format(m5.curTick(), exit_event.getCause()) |
| ) |