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# Copyright (c) 2006-2007 The Regents of The University of Michigan
# 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
# contributors may be used to endorse or promote products derived from
# 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
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Kevin Lim
from m5.params import *
from m5 import build_env
from BaseCPU import BaseCPU
if build_env['USE_CHECKER']:
from OzoneChecker import OzoneChecker
class DerivOzoneCPU(BaseCPU):
type = 'DerivOzoneCPU'
numThreads = Param.Unsigned("number of HW thread contexts")
if build_env['USE_CHECKER']:
checker = Param.BaseCPU("Checker CPU")
if build_env['FULL_SYSTEM']:
profile = Param.Latency('0ns', "trace the kernel stack")
icache_port = Port("Instruction Port")
dcache_port = Port("Data Port")
width = Param.Unsigned("Width")
frontEndWidth = Param.Unsigned("Front end width")
frontEndLatency = Param.Unsigned("Front end latency")
backEndWidth = Param.Unsigned("Back end width")
backEndSquashLatency = Param.Unsigned("Back end squash latency")
backEndLatency = Param.Unsigned("Back end latency")
maxInstBufferSize = Param.Unsigned("Maximum instruction buffer size")
maxOutstandingMemOps = Param.Unsigned("Maximum number of outstanding memory operations")
decodeToFetchDelay = Param.Unsigned("Decode to fetch delay")
renameToFetchDelay = Param.Unsigned("Rename to fetch delay")
iewToFetchDelay = Param.Unsigned("Issue/Execute/Writeback to fetch "
"delay")
commitToFetchDelay = Param.Unsigned("Commit to fetch delay")
fetchWidth = Param.Unsigned("Fetch width")
renameToDecodeDelay = Param.Unsigned("Rename to decode delay")
iewToDecodeDelay = Param.Unsigned("Issue/Execute/Writeback to decode "
"delay")
commitToDecodeDelay = Param.Unsigned("Commit to decode delay")
fetchToDecodeDelay = Param.Unsigned("Fetch to decode delay")
decodeWidth = Param.Unsigned("Decode width")
iewToRenameDelay = Param.Unsigned("Issue/Execute/Writeback to rename "
"delay")
commitToRenameDelay = Param.Unsigned("Commit to rename delay")
decodeToRenameDelay = Param.Unsigned("Decode to rename delay")
renameWidth = Param.Unsigned("Rename width")
commitToIEWDelay = Param.Unsigned("Commit to "
"Issue/Execute/Writeback delay")
renameToIEWDelay = Param.Unsigned("Rename to "
"Issue/Execute/Writeback delay")
issueToExecuteDelay = Param.Unsigned("Issue to execute delay (internal "
"to the IEW stage)")
issueWidth = Param.Unsigned("Issue width")
executeWidth = Param.Unsigned("Execute width")
executeIntWidth = Param.Unsigned("Integer execute width")
executeFloatWidth = Param.Unsigned("Floating point execute width")
executeBranchWidth = Param.Unsigned("Branch execute width")
executeMemoryWidth = Param.Unsigned("Memory execute width")
iewToCommitDelay = Param.Unsigned("Issue/Execute/Writeback to commit "
"delay")
renameToROBDelay = Param.Unsigned("Rename to reorder buffer delay")
commitWidth = Param.Unsigned("Commit width")
squashWidth = Param.Unsigned("Squash width")
predType = Param.String("Type of branch predictor ('local', 'tournament')")
localPredictorSize = Param.Unsigned("Size of local predictor")
localCtrBits = Param.Unsigned("Bits per counter")
localHistoryTableSize = Param.Unsigned("Size of local history table")
localHistoryBits = Param.Unsigned("Bits for the local history")
globalPredictorSize = Param.Unsigned("Size of global predictor")
globalCtrBits = Param.Unsigned("Bits per counter")
globalHistoryBits = Param.Unsigned("Bits of history")
choicePredictorSize = Param.Unsigned("Size of choice predictor")
choiceCtrBits = Param.Unsigned("Bits of choice counters")
BTBEntries = Param.Unsigned("Number of BTB entries")
BTBTagSize = Param.Unsigned("Size of the BTB tags, in bits")
RASSize = Param.Unsigned("RAS size")
LQEntries = Param.Unsigned("Number of load queue entries")
SQEntries = Param.Unsigned("Number of store queue entries")
lsqLimits = Param.Bool(True, "LSQ size limits dispatch")
LFSTSize = Param.Unsigned("Last fetched store table size")
SSITSize = Param.Unsigned("Store set ID table size")
numPhysIntRegs = Param.Unsigned("Number of physical integer registers")
numPhysFloatRegs = Param.Unsigned("Number of physical floating point "
"registers")
numIQEntries = Param.Unsigned("Number of instruction queue entries")
numROBEntries = Param.Unsigned("Number of reorder buffer entries")
instShiftAmt = Param.Unsigned("Number of bits to shift instructions by")
function_trace = Param.Bool(False, "Enable function trace")
function_trace_start = Param.Tick(0, "Cycle to start function trace")
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