--- /dev/null
+# Copyright (c) 2012 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: Ron Dreslinski
+
+
+from m5.objects import *
+
+# Simple ALU Instructions have a latency of 1
+class O3_ARM_v7a_Simple_Int(FUDesc):
+ opList = [ OpDesc(opClass='IntAlu', opLat=1) ]
+ count = 2
+
+# Complex ALU instructions have a variable latencies
+class O3_ARM_v7a_Complex_Int(FUDesc):
+ opList = [ OpDesc(opClass='IntMult', opLat=3, issueLat=1),
+ OpDesc(opClass='IntDiv', opLat=12, issueLat=12),
+ OpDesc(opClass='IprAccess', opLat=3, issueLat=1) ]
+ count = 1
+
+
+# Floating point and SIMD instructions
+class O3_ARM_v7a_FP(FUDesc):
+ opList = [ OpDesc(opClass='SimdAdd', opLat=4),
+ OpDesc(opClass='SimdAddAcc', opLat=4),
+ OpDesc(opClass='SimdAlu', opLat=4),
+ OpDesc(opClass='SimdCmp', opLat=4),
+ OpDesc(opClass='SimdCvt', opLat=3),
+ OpDesc(opClass='SimdMisc', opLat=3),
+ OpDesc(opClass='SimdMult',opLat=5),
+ OpDesc(opClass='SimdMultAcc',opLat=5),
+ OpDesc(opClass='SimdShift',opLat=3),
+ OpDesc(opClass='SimdShiftAcc', opLat=3),
+ OpDesc(opClass='SimdSqrt', opLat=9),
+ OpDesc(opClass='SimdFloatAdd',opLat=5),
+ OpDesc(opClass='SimdFloatAlu',opLat=5),
+ OpDesc(opClass='SimdFloatCmp', opLat=3),
+ OpDesc(opClass='SimdFloatCvt', opLat=3),
+ OpDesc(opClass='SimdFloatDiv', opLat=3),
+ OpDesc(opClass='SimdFloatMisc', opLat=3),
+ OpDesc(opClass='SimdFloatMult', opLat=3),
+ OpDesc(opClass='SimdFloatMultAcc',opLat=1),
+ OpDesc(opClass='SimdFloatSqrt', opLat=9),
+ OpDesc(opClass='FloatAdd', opLat=5),
+ OpDesc(opClass='FloatCmp', opLat=5),
+ OpDesc(opClass='FloatCvt', opLat=5),
+ OpDesc(opClass='FloatDiv', opLat=9, issueLat=9),
+ OpDesc(opClass='FloatSqrt', opLat=33, issueLat=33),
+ OpDesc(opClass='FloatMult', opLat=4) ]
+ count = 2
+
+
+# Load/Store Units
+class O3_ARM_v7a_Load(FUDesc):
+ opList = [ OpDesc(opClass='MemRead',opLat=2) ]
+ count = 1
+
+class O3_ARM_v7a_Store(FUDesc):
+ opList = [OpDesc(opClass='MemWrite',opLat=2) ]
+ count = 1
+
+# Functional Units for this CPU
+class O3_ARM_v7a_FUP(FUPool):
+ FUList = [O3_ARM_v7a_Simple_Int(), O3_ARM_v7a_Complex_Int(),
+ O3_ARM_v7a_Load(), O3_ARM_v7a_Store(), O3_ARM_v7a_FP()]
+
+
+class O3_ARM_v7a_3(DerivO3CPU):
+ predType = "tournament"
+ localPredictorSize = 64
+ localCtrBits = 2
+ localHistoryTableSize = 64
+ localHistoryBits = 6
+ globalPredictorSize = 8192
+ globalCtrBits = 2
+ globalHistoryBits = 13
+ choicePredictorSize = 8192
+ choiceCtrBits = 2
+ BTBEntries = 2048
+ BTBTagSize = 18
+ RASSize = 16
+ instShiftAmt = 2
+ LQEntries = 16
+ SQEntries = 16
+ LSQDepCheckShift = 0
+ LFSTSize = 1024
+ SSITSize = 1024
+ decodeToFetchDelay = 1
+ renameToFetchDelay = 1
+ iewToFetchDelay = 1
+ commitToFetchDelay = 1
+ renameToDecodeDelay = 1
+ iewToDecodeDelay = 1
+ commitToDecodeDelay = 1
+ iewToRenameDelay = 1
+ commitToRenameDelay = 1
+ commitToIEWDelay = 1
+ fetchWidth = 3
+ fetchToDecodeDelay = 3
+ decodeWidth = 3
+ decodeToRenameDelay = 2
+ renameWidth = 3
+ renameToIEWDelay = 1
+ issueToExecuteDelay = 1
+ dispatchWidth = 6
+ issueWidth = 8
+ wbWidth = 8
+ wbDepth = 1
+ fuPool = O3_ARM_v7a_FUP()
+ iewToCommitDelay = 1
+ renameToROBDelay = 1
+ commitWidth = 8
+ squashWidth = 8
+ trapLatency = 13
+ backComSize = 5
+ forwardComSize = 5
+ numPhysIntRegs = 128
+ numPhysFloatRegs = 128
+ numIQEntries = 32
+ numROBEntries = 40
+
+ defer_registration= False
+
+# Instruction Cache
+# All latencys assume a 1GHz clock rate, with a faster clock they would be faster
+class O3_ARM_v7a_ICache(BaseCache):
+ latency = '1ns'
+ block_size = 64
+ mshrs = 2
+ tgts_per_mshr = 8
+ size = '32kB'
+ assoc = 2
+ is_top_level = 'true'
+
+# Data Cache
+# All latencys assume a 1GHz clock rate, with a faster clock they would be faster
+class O3_ARM_v7a_DCache(BaseCache):
+ latency = '2ns'
+ block_size = 64
+ mshrs = 6
+ tgts_per_mshr = 8
+ size = '32kB'
+ assoc = 2
+ write_buffers = 16
+ is_top_level = 'true'
+
+# TLB Cache
+# Use a cache as a L2 TLB
+class O3_ARM_v7aWalkCache(BaseCache):
+ latency = '4ns'
+ block_size = 64
+ mshrs = 6
+ tgts_per_mshr = 8
+ size = '1kB'
+ assoc = 8
+ write_buffers = 16
+ is_top_level = 'true'
+
+
+# L2 Cache
+# All latencys assume a 1GHz clock rate, with a faster clock they would be faster
+class O3_ARM_v7aL2(BaseCache):
+ latency = '12ns'
+ block_size = 64
+ mshrs = 16
+ tgts_per_mshr = 8
+ size = '1MB'
+ assoc = 16
+ write_buffers = 8
+ # Simple stride prefetcher
+ prefetch_policy = 'stride'
+ prefetch_on_access = 'true'
+ prefetch_latency = '1.0ns'
+ prefetch_degree = 8
+
+
projects / gem5.git / commitdiff