src/cpu/ozone/SimpleOzoneCPU.py

   1 # Copyright (c) 2006-2007 The Regents of The University of Michigan
   2 # All rights reserved.
   3 #
   4 # Redistribution and use in source and binary forms, with or without
   5 # modification, are permitted provided that the following conditions are
   6 # met: redistributions of source code must retain the above copyright
   7 # notice, this list of conditions and the following disclaimer;
   8 # redistributions in binary form must reproduce the above copyright
   9 # notice, this list of conditions and the following disclaimer in the
  10 # documentation and/or other materials provided with the distribution;
  11 # neither the name of the copyright holders nor the names of its
  12 # contributors may be used to endorse or promote products derived from
  13 # this software without specific prior written permission.
  14 #
  15 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  17 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  18 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  19 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  25 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 #
  27 # Authors: Kevin Lim
  28
  29 from m5.defines import buildEnv
  30 from m5.params import *
  31 from BaseCPU import BaseCPU
  32
  33 class SimpleOzoneCPU(BaseCPU):
  34     type = 'SimpleOzoneCPU'
  35
  36     numThreads = Param.Unsigned("number of HW thread contexts")
  37
  38     if not buildEnv['FULL_SYSTEM']:
  39         mem = Param.FunctionalMemory(NULL, "memory")
  40
  41     width = Param.Unsigned("Width")
  42     frontEndWidth = Param.Unsigned("Front end width")
  43     backEndWidth = Param.Unsigned("Back end width")
  44     backEndSquashLatency = Param.Unsigned("Back end squash latency")
  45     backEndLatency = Param.Unsigned("Back end latency")
  46     maxInstBufferSize = Param.Unsigned("Maximum instruction buffer size")
  47     decodeToFetchDelay = Param.Unsigned("Decode to fetch delay")
  48     renameToFetchDelay = Param.Unsigned("Rename to fetch delay")
  49     iewToFetchDelay = Param.Unsigned("Issue/Execute/Writeback to fetch "
  50                "delay")
  51     commitToFetchDelay = Param.Unsigned("Commit to fetch delay")
  52     fetchWidth = Param.Unsigned("Fetch width")
  53
  54     renameToDecodeDelay = Param.Unsigned("Rename to decode delay")
  55     iewToDecodeDelay = Param.Unsigned("Issue/Execute/Writeback to decode "
  56                "delay")
  57     commitToDecodeDelay = Param.Unsigned("Commit to decode delay")
  58     fetchToDecodeDelay = Param.Unsigned("Fetch to decode delay")
  59     decodeWidth = Param.Unsigned("Decode width")
  60
  61     iewToRenameDelay = Param.Unsigned("Issue/Execute/Writeback to rename "
  62                "delay")
  63     commitToRenameDelay = Param.Unsigned("Commit to rename delay")
  64     decodeToRenameDelay = Param.Unsigned("Decode to rename delay")
  65     renameWidth = Param.Unsigned("Rename width")
  66
  67     commitToIEWDelay = Param.Unsigned("Commit to "
  68                "Issue/Execute/Writeback delay")
  69     renameToIEWDelay = Param.Unsigned("Rename to "
  70                "Issue/Execute/Writeback delay")
  71     issueToExecuteDelay = Param.Unsigned("Issue to execute delay (internal "
  72               "to the IEW stage)")
  73     issueWidth = Param.Unsigned("Issue width")
  74     executeWidth = Param.Unsigned("Execute width")
  75     executeIntWidth = Param.Unsigned("Integer execute width")
  76     executeFloatWidth = Param.Unsigned("Floating point execute width")
  77     executeBranchWidth = Param.Unsigned("Branch execute width")
  78     executeMemoryWidth = Param.Unsigned("Memory execute width")
  79
  80     iewToCommitDelay = Param.Unsigned("Issue/Execute/Writeback to commit "
  81                "delay")
  82     renameToROBDelay = Param.Unsigned("Rename to reorder buffer delay")
  83     commitWidth = Param.Unsigned("Commit width")
  84     squashWidth = Param.Unsigned("Squash width")
  85
  86     localPredictorSize = Param.Unsigned("Size of local predictor")
  87     localCtrBits = Param.Unsigned("Bits per counter")
  88     localHistoryTableSize = Param.Unsigned("Size of local history table")
  89     localHistoryBits = Param.Unsigned("Bits for the local history")
  90     globalPredictorSize = Param.Unsigned("Size of global predictor")
  91     globalCtrBits = Param.Unsigned("Bits per counter")
  92     globalHistoryBits = Param.Unsigned("Bits of history")
  93     choicePredictorSize = Param.Unsigned("Size of choice predictor")
  94     choiceCtrBits = Param.Unsigned("Bits of choice counters")
  95
  96     BTBEntries = Param.Unsigned("Number of BTB entries")
  97     BTBTagSize = Param.Unsigned("Size of the BTB tags, in bits")
  98
  99     RASSize = Param.Unsigned("RAS size")
 100
 101     LQEntries = Param.Unsigned("Number of load queue entries")
 102     SQEntries = Param.Unsigned("Number of store queue entries")
 103     LFSTSize = Param.Unsigned("Last fetched store table size")
 104     SSITSize = Param.Unsigned("Store set ID table size")
 105
 106     numPhysIntRegs = Param.Unsigned("Number of physical integer registers")
 107     numPhysFloatRegs = Param.Unsigned("Number of physical floating point "
 108                "registers")
 109     numIQEntries = Param.Unsigned("Number of instruction queue entries")
 110     numROBEntries = Param.Unsigned("Number of reorder buffer entries")
 111
 112     instShiftAmt = Param.Unsigned("Number of bits to shift instructions by")
 113
 114     function_trace = Param.Bool(False, "Enable function trace")
 115     function_trace_start = Param.Tick(0, "Cycle to start function trace")