076d04a653
This patch adds a 'sys_clock' command-line option and use it to assign clocks to the system during instantiation. As part of this change, the default clock in the System class is removed and whenever a system is instantiated a system clock value must be set. A default value is provided for the command-line option. The configs and tests are updated accordingly.
75 lines
2.8 KiB
Python
75 lines
2.8 KiB
Python
# Copyright (c) 2006-2007 The Regents of The University of Michigan
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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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# Authors: Ron Dreslinski
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import m5
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from m5.objects import *
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m5.util.addToPath('../configs/common')
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from Caches import *
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nb_cores = 4
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cpus = [ DerivO3CPU(cpu_id=i) for i in xrange(nb_cores) ]
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# system simulated
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system = System(cpu = cpus,
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physmem = DDR3_1600_x64(),
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membus = CoherentBus(),
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mem_mode = "timing")
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system.clock = '1GHz'
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# l2cache & bus
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system.toL2Bus = CoherentBus(clock = '2GHz')
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system.l2c = L2Cache(clock = '2GHz', size='4MB', assoc=8)
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system.l2c.cpu_side = system.toL2Bus.master
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# connect l2c to membus
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system.l2c.mem_side = system.membus.slave
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# add L1 caches
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for cpu in cpus:
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cpu.addPrivateSplitL1Caches(L1Cache(size = '32kB', assoc = 1),
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L1Cache(size = '32kB', assoc = 4))
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# create the interrupt controller
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cpu.createInterruptController()
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# connect cpu level-1 caches to shared level-2 cache
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cpu.connectAllPorts(system.toL2Bus, system.membus)
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cpu.clock = '2GHz'
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# connect memory to membus
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system.physmem.port = system.membus.master
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# connect system port to membus
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system.system_port = system.membus.slave
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# -----------------------
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# run simulation
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# -----------------------
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root = Root( full_system = False, system = system )
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root.system.mem_mode = 'timing'
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#root.trace.flags="Bus Cache"
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#root.trace.flags = "BusAddrRanges"
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