e1db67c4bd
This commit contains the rest of the base 2 vs base 10 cache/memory size clarifications. It also changes the warning message to use warn(). With these changes, the warning message should now no longer show up during a fresh compilation of gem5. Change-Id: Ia63f841bdf045b76473437f41548fab27dc19631
92 lines
3.4 KiB
Python
92 lines
3.4 KiB
Python
# Copyright (c) 2023 The Regents of the University of California
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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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"""
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This gem5 configuation script creates a simple board to run a POWER
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"hello world" binary.
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This is setup is the close to the simplest setup possible using the gem5
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library. It does not contain any kind of caching, IO, or any non-essential
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components.
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Usage
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-----
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```
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scons build/POWER/gem5.opt
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./build/POWER/gem5.opt configs/example/gem5_library/power-hello.py
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```
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"""
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from gem5.components.boards.simple_board import SimpleBoard
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from gem5.components.cachehierarchies.classic.no_cache import NoCache
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from gem5.components.memory import SingleChannelDDR4_2400
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from gem5.components.processors.cpu_types import CPUTypes
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from gem5.components.processors.simple_processor import SimpleProcessor
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from gem5.isas import ISA
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from gem5.resources.resource import obtain_resource
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from gem5.simulate.simulator import Simulator
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from gem5.utils.requires import requires
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# This check ensures the gem5 binary is compiled to the POWER ISA target.
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# If not, an exception will be thrown.
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requires(isa_required=ISA.POWER)
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# In this setup we don't have a cache. `NoCache` can be used for such setups.
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cache_hierarchy = NoCache()
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# We use a single channel DDR4_2400 memory system
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memory = SingleChannelDDR4_2400(size="32MiB")
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# We use a simple ATOMIC processor with one core.
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processor = SimpleProcessor(
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cpu_type=CPUTypes.ATOMIC, isa=ISA.POWER, num_cores=1
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)
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# The gem5 library simple board which can be used to run simple SE-mode
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# simulations.
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board = SimpleBoard(
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clk_freq="3GHz",
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processor=processor,
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memory=memory,
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cache_hierarchy=cache_hierarchy,
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)
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board.set_se_binary_workload(
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obtain_resource("power-hello", resource_version="1.0.0")
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)
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# Lastly we run the simulation.
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simulator = Simulator(board=board)
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simulator.run()
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print(
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"Exiting @ tick {} because {}.".format(
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simulator.get_current_tick(),
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simulator.get_last_exit_event_cause(),
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)
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)
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