1 from m5
.params
import *
3 from m5
import build_env
4 from BaseCPU
import BaseCPU
5 from Checker
import O3Checker
8 class DerivO3CPU(BaseCPU
):
10 activity
= Param
.Unsigned(0, "Initial count")
11 numThreads
= Param
.Unsigned(1, "number of HW thread contexts")
13 if build_env
['FULL_SYSTEM']:
14 profile
= Param
.Latency('0ns', "trace the kernel stack")
15 if build_env
['USE_CHECKER']:
16 if not build_env
['FULL_SYSTEM']:
17 checker
= Param
.BaseCPU(O3Checker(workload
=Parent
.workload
,
20 warnOnlyOnLoadError
=False),
23 checker
= Param
.BaseCPU(O3Checker(exitOnError
=False, updateOnError
=True,
24 warnOnlyOnLoadError
=False), "checker")
25 checker
.itb
= Parent
.itb
26 checker
.dtb
= Parent
.dtb
28 cachePorts
= Param
.Unsigned("Cache Ports")
29 icache_port
= Port("Instruction Port")
30 dcache_port
= Port("Data Port")
31 _mem_ports
= ['icache_port', 'dcache_port']
33 decodeToFetchDelay
= Param
.Unsigned(1, "Decode to fetch delay")
34 renameToFetchDelay
= Param
.Unsigned(1 ,"Rename to fetch delay")
35 iewToFetchDelay
= Param
.Unsigned(1, "Issue/Execute/Writeback to fetch "
37 commitToFetchDelay
= Param
.Unsigned(1, "Commit to fetch delay")
38 fetchWidth
= Param
.Unsigned(8, "Fetch width")
40 renameToDecodeDelay
= Param
.Unsigned(1, "Rename to decode delay")
41 iewToDecodeDelay
= Param
.Unsigned(1, "Issue/Execute/Writeback to decode "
43 commitToDecodeDelay
= Param
.Unsigned(1, "Commit to decode delay")
44 fetchToDecodeDelay
= Param
.Unsigned(1, "Fetch to decode delay")
45 decodeWidth
= Param
.Unsigned(8, "Decode width")
47 iewToRenameDelay
= Param
.Unsigned(1, "Issue/Execute/Writeback to rename "
49 commitToRenameDelay
= Param
.Unsigned(1, "Commit to rename delay")
50 decodeToRenameDelay
= Param
.Unsigned(1, "Decode to rename delay")
51 renameWidth
= Param
.Unsigned(8, "Rename width")
53 commitToIEWDelay
= Param
.Unsigned(1, "Commit to "
54 "Issue/Execute/Writeback delay")
55 renameToIEWDelay
= Param
.Unsigned(2, "Rename to "
56 "Issue/Execute/Writeback delay")
57 issueToExecuteDelay
= Param
.Unsigned(1, "Issue to execute delay (internal "
59 dispatchWidth
= Param
.Unsigned(8, "Dispatch width")
60 issueWidth
= Param
.Unsigned(8, "Issue width")
61 wbWidth
= Param
.Unsigned(8, "Writeback width")
62 wbDepth
= Param
.Unsigned(1, "Writeback depth")
63 fuPool
= Param
.FUPool(DefaultFUPool(), "Functional Unit pool")
65 iewToCommitDelay
= Param
.Unsigned(1, "Issue/Execute/Writeback to commit "
67 renameToROBDelay
= Param
.Unsigned(1, "Rename to reorder buffer delay")
68 commitWidth
= Param
.Unsigned(8, "Commit width")
69 squashWidth
= Param
.Unsigned(8, "Squash width")
70 trapLatency
= Param
.Tick(13, "Trap latency")
71 fetchTrapLatency
= Param
.Tick(1, "Fetch trap latency")
73 backComSize
= Param
.Unsigned(5, "Time buffer size for backwards communication")
74 forwardComSize
= Param
.Unsigned(5, "Time buffer size for forward communication")
76 predType
= Param
.String("tournament", "Branch predictor type ('local', 'tournament')")
77 localPredictorSize
= Param
.Unsigned(2048, "Size of local predictor")
78 localCtrBits
= Param
.Unsigned(2, "Bits per counter")
79 localHistoryTableSize
= Param
.Unsigned(2048, "Size of local history table")
80 localHistoryBits
= Param
.Unsigned(11, "Bits for the local history")
81 globalPredictorSize
= Param
.Unsigned(8192, "Size of global predictor")
82 globalCtrBits
= Param
.Unsigned(2, "Bits per counter")
83 globalHistoryBits
= Param
.Unsigned(13, "Bits of history")
84 choicePredictorSize
= Param
.Unsigned(8192, "Size of choice predictor")
85 choiceCtrBits
= Param
.Unsigned(2, "Bits of choice counters")
87 BTBEntries
= Param
.Unsigned(4096, "Number of BTB entries")
88 BTBTagSize
= Param
.Unsigned(16, "Size of the BTB tags, in bits")
90 RASSize
= Param
.Unsigned(16, "RAS size")
92 LQEntries
= Param
.Unsigned(32, "Number of load queue entries")
93 SQEntries
= Param
.Unsigned(32, "Number of store queue entries")
94 LFSTSize
= Param
.Unsigned(1024, "Last fetched store table size")
95 SSITSize
= Param
.Unsigned(1024, "Store set ID table size")
97 numRobs
= Param
.Unsigned(1, "Number of Reorder Buffers");
99 numPhysIntRegs
= Param
.Unsigned(256, "Number of physical integer registers")
100 numPhysFloatRegs
= Param
.Unsigned(256, "Number of physical floating point "
102 numIQEntries
= Param
.Unsigned(64, "Number of instruction queue entries")
103 numROBEntries
= Param
.Unsigned(192, "Number of reorder buffer entries")
105 instShiftAmt
= Param
.Unsigned(2, "Number of bits to shift instructions by")
107 function_trace
= Param
.Bool(False, "Enable function trace")
108 function_trace_start
= Param
.Tick(0, "Cycle to start function trace")
110 smtNumFetchingThreads
= Param
.Unsigned("SMT Number of Fetching Threads")
111 smtFetchPolicy
= Param
.String("SMT Fetch policy")
112 smtLSQPolicy
= Param
.String("SMT LSQ Sharing Policy")
113 smtLSQThreshold
= Param
.String("SMT LSQ Threshold Sharing Parameter")
114 smtIQPolicy
= Param
.String("SMT IQ Sharing Policy")
115 smtIQThreshold
= Param
.String("SMT IQ Threshold Sharing Parameter")
116 smtROBPolicy
= Param
.String("SMT ROB Sharing Policy")
117 smtROBThreshold
= Param
.String("SMT ROB Threshold Sharing Parameter")
118 smtCommitPolicy
= Param
.String("SMT Commit Policy")