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# Copyright (c) 2015 ARM Limited
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#
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# to a hardware implementation of the functionality of the software
# licensed hereunder. You may use the software subject to the license
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#
# Copyright (c) 2005-2007 The Regents of The University of Michigan
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# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
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# neither the name of the copyright holders nor the names of its
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# this software without specific prior written permission.
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from m5.params import *
from m5.proxy import *
from m5.objects.ClockedObject import ClockedObject
class MemTest(ClockedObject):
type = 'MemTest'
cxx_header = "cpu/testers/memtest/memtest.hh"
# Interval of packet injection, the size of the memory range
# touched, and an optional stop condition
interval = Param.Cycles(1, "Interval between request packets")
size = Param.Unsigned(65536, "Size of memory region to use (bytes)")
max_loads = Param.Counter(0, "Number of loads to execute before exiting")
# Control the mix of packets and if functional accesses are part of
# the mix or not
percent_reads = Param.Percent(65, "Percentage reads")
percent_functional = Param.Percent(50, "Percentage functional accesses")
percent_uncacheable = Param.Percent(10, "Percentage uncacheable")
# Determine how often to print progress messages and what timeout
# to use for checking progress of both requests and responses
progress_interval = Param.Counter(1000000,
"Progress report interval (in accesses)")
progress_check = Param.Cycles(5000000, "Cycles before exiting " \
"due to lack of progress")
port = RequestPort("Port to the memory system")
system = Param.System(Parent.any, "System this tester is part of")
# Add the ability to supress error responses on functional
# accesses as Ruby needs this
suppress_func_errors = Param.Bool(False, "Suppress panic when "\
"functional accesses fail.")