xref: /gem5/tests/configs/memtest.py

# Copyright (c) 2006-2007 The Regents of The University of Michigan
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# Authors: Ron Dreslinski

import m5
from m5.objects import *
m5.util.addToPath('../configs/common')
from Caches import *

#MAX CORES IS 8 with the fals sharing method
nb_cores = 8
cpus = [ MemTest() for i in xrange(nb_cores) ]

# system simulated
system = System(cpu = cpus, funcmem = SimpleMemory(in_addr_map = False),
                funcbus = NoncoherentBus(),
                physmem = SimpleMemory(),
                membus = CoherentBus(width=16),
                clk_domain = SrcClockDomain(clock = '1GHz'))

# Create a seperate clock domain for components that should run at
# CPUs frequency
system.cpu_clk_domain = SrcClockDomain(clock = '2GHz')

system.toL2Bus = CoherentBus(clk_domain = system.cpu_clk_domain, width=16)
system.l2c = L2Cache(clk_domain = system.cpu_clk_domain, size='64kB', assoc=8)
system.l2c.cpu_side = system.toL2Bus.master

# connect l2c to membus
system.l2c.mem_side = system.membus.slave

# add L1 caches
for cpu in cpus:
    # All cpus are associated with cpu_clk_domain
    cpu.clk_domain = system.cpu_clk_domain
    cpu.l1c = L1Cache(size = '32kB', assoc = 4)
    cpu.l1c.cpu_side = cpu.test
    cpu.l1c.mem_side = system.toL2Bus.slave
    system.funcbus.slave = cpu.functional

system.system_port = system.membus.slave

# connect reference memory to funcbus
system.funcmem.port = system.funcbus.master

# connect memory to membus
system.physmem.port = system.membus.master


# -----------------------
# run simulation
# -----------------------

root = Root( full_system = False, system = system )
root.system.mem_mode = 'timing'
#root.trace.flags="Cache CachePort MemoryAccess"
#root.trace.cycle=1