BaseCPU.py revision 7868 
1# Copyright (c) 2005-2008 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
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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: Nathan Binkert
28
29import sys
30
31from m5.defines import buildEnv
32from m5.params import *
33from m5.proxy import *
34
35from Bus import Bus
36from InstTracer import InstTracer
37from ExeTracer import ExeTracer
38from MemObject import MemObject
39
40default_tracer = ExeTracer()
41
42if buildEnv['TARGET_ISA'] == 'alpha':
43    from AlphaTLB import AlphaDTB, AlphaITB
44    if buildEnv['FULL_SYSTEM']:
45        from AlphaInterrupts import AlphaInterrupts
46elif buildEnv['TARGET_ISA'] == 'sparc':
47    from SparcTLB import SparcTLB
48    if buildEnv['FULL_SYSTEM']:
49        from SparcInterrupts import SparcInterrupts
50elif buildEnv['TARGET_ISA'] == 'x86':
51    from X86TLB import X86TLB
52    if buildEnv['FULL_SYSTEM']:
53        from X86LocalApic import X86LocalApic
54elif buildEnv['TARGET_ISA'] == 'mips':
55    from MipsTLB import MipsTLB
56    if buildEnv['FULL_SYSTEM']:
57        from MipsInterrupts import MipsInterrupts
58elif buildEnv['TARGET_ISA'] == 'arm':
59    from ArmTLB import ArmTLB
60    if buildEnv['FULL_SYSTEM']:
61        from ArmInterrupts import ArmInterrupts
62elif buildEnv['TARGET_ISA'] == 'power':
63    from PowerTLB import PowerTLB
64    if buildEnv['FULL_SYSTEM']:
65        from PowerInterrupts import PowerInterrupts
66
67class BaseCPU(MemObject):
68    type = 'BaseCPU'
69    abstract = True
70
71    system = Param.System(Parent.any, "system object")
72    cpu_id = Param.Int(-1, "CPU identifier")
73    numThreads = Param.Unsigned(1, "number of HW thread contexts")
74
75    function_trace = Param.Bool(False, "Enable function trace")
76    function_trace_start = Param.Tick(0, "Cycle to start function trace")
77
78    checker = Param.BaseCPU(NULL, "checker CPU")
79
80    do_checkpoint_insts = Param.Bool(True,
81        "enable checkpoint pseudo instructions")
82    do_statistics_insts = Param.Bool(True,
83        "enable statistics pseudo instructions")
84
85    if buildEnv['FULL_SYSTEM']:
86        profile = Param.Latency('0ns', "trace the kernel stack")
87        do_quiesce = Param.Bool(True, "enable quiesce instructions")
88    else:
89        workload = VectorParam.Process("processes to run")
90
91    if buildEnv['TARGET_ISA'] == 'sparc':
92        dtb = Param.SparcTLB(SparcTLB(), "Data TLB")
93        itb = Param.SparcTLB(SparcTLB(), "Instruction TLB")
94        if buildEnv['FULL_SYSTEM']:
95            interrupts = Param.SparcInterrupts(
96                SparcInterrupts(), "Interrupt Controller")
97    elif buildEnv['TARGET_ISA'] == 'alpha':
98        dtb = Param.AlphaTLB(AlphaDTB(), "Data TLB")
99        itb = Param.AlphaTLB(AlphaITB(), "Instruction TLB")
100        if buildEnv['FULL_SYSTEM']:
101            interrupts = Param.AlphaInterrupts(
102                AlphaInterrupts(), "Interrupt Controller")
103    elif buildEnv['TARGET_ISA'] == 'x86':
104        dtb = Param.X86TLB(X86TLB(), "Data TLB")
105        itb = Param.X86TLB(X86TLB(), "Instruction TLB")
106        if buildEnv['FULL_SYSTEM']:
107            _localApic = X86LocalApic(pio_addr=0x2000000000000000)
108            interrupts = \
109                Param.X86LocalApic(_localApic, "Interrupt Controller")
110    elif buildEnv['TARGET_ISA'] == 'mips':
111        dtb = Param.MipsTLB(MipsTLB(), "Data TLB")
112        itb = Param.MipsTLB(MipsTLB(), "Instruction TLB")
113        if buildEnv['FULL_SYSTEM']:
114            interrupts = Param.MipsInterrupts(
115                    MipsInterrupts(), "Interrupt Controller")
116    elif buildEnv['TARGET_ISA'] == 'arm':
117        dtb = Param.ArmTLB(ArmTLB(), "Data TLB")
118        itb = Param.ArmTLB(ArmTLB(), "Instruction TLB")
119        if buildEnv['FULL_SYSTEM']:
120            interrupts = Param.ArmInterrupts(
121                    ArmInterrupts(), "Interrupt Controller")
122    elif buildEnv['TARGET_ISA'] == 'power':
123        UnifiedTLB = Param.Bool(True, "Is this a Unified TLB?")
124        dtb = Param.PowerTLB(PowerTLB(), "Data TLB")
125        itb = Param.PowerTLB(PowerTLB(), "Instruction TLB")
126        if buildEnv['FULL_SYSTEM']:
127            interrupts = Param.PowerInterrupts(
128                    PowerInterrupts(), "Interrupt Controller")
129    else:
130        print "Don't know what TLB to use for ISA %s" % \
131            buildEnv['TARGET_ISA']
132        sys.exit(1)
133
134    max_insts_all_threads = Param.Counter(0,
135        "terminate when all threads have reached this inst count")
136    max_insts_any_thread = Param.Counter(0,
137        "terminate when any thread reaches this inst count")
138    max_loads_all_threads = Param.Counter(0,
139        "terminate when all threads have reached this load count")
140    max_loads_any_thread = Param.Counter(0,
141        "terminate when any thread reaches this load count")
142    progress_interval = Param.Tick(0,
143        "interval to print out the progress message")
144
145    defer_registration = Param.Bool(False,
146        "defer registration with system (for sampling)")
147
148    clock = Param.Clock('1t', "clock speed")
149    phase = Param.Latency('0ns', "clock phase")
150
151    tracer = Param.InstTracer(default_tracer, "Instruction tracer")
152
153    _mem_ports = []
154    if buildEnv['TARGET_ISA'] == 'x86' and buildEnv['FULL_SYSTEM']:
155        _mem_ports = ["itb.walker.port",
156                      "dtb.walker.port",
157                      "interrupts.pio",
158                      "interrupts.int_port"]
159
160    if buildEnv['TARGET_ISA'] == 'arm' and buildEnv['FULL_SYSTEM']:
161        _mem_ports = ["itb.walker.port",
162                      "dtb.walker.port"]
163
164    def connectMemPorts(self, bus):
165        for p in self._mem_ports:
166            if p != 'physmem_port':
167                exec('self.%s = bus.port' % p)
168
169    def addPrivateSplitL1Caches(self, ic, dc, iwc = None, dwc = None):
170        assert(len(self._mem_ports) < 8)
171        self.icache = ic
172        self.dcache = dc
173        self.icache_port = ic.cpu_side
174        self.dcache_port = dc.cpu_side
175        self._mem_ports = ['icache.mem_side', 'dcache.mem_side']
176        if buildEnv['FULL_SYSTEM']:
177            if buildEnv['TARGET_ISA'] == 'x86':
178                self.itb_walker_cache = iwc
179                self.dtb_walker_cache = dwc
180                self.itb.walker.port = iwc.cpu_side
181                self.dtb.walker.port = dwc.cpu_side
182                self._mem_ports += ["itb_walker_cache.mem_side", \
183                                    "dtb_walker_cache.mem_side"]
184                self._mem_ports += ["interrupts.pio", "interrupts.int_port"]
185            elif buildEnv['TARGET_ISA'] == 'arm':
186                self._mem_ports += ["itb.walker.port", "dtb.walker.port"]
187
188    def addTwoLevelCacheHierarchy(self, ic, dc, l2c, iwc = None, dwc = None):
189        self.addPrivateSplitL1Caches(ic, dc, iwc, dwc)
190        self.toL2Bus = Bus()
191        self.connectMemPorts(self.toL2Bus)
192        self.l2cache = l2c
193        self.l2cache.cpu_side = self.toL2Bus.port
194        self._mem_ports = ['l2cache.mem_side']
195
196    if buildEnv['TARGET_ISA'] == 'mips':
197        CP0_IntCtl_IPTI = Param.Unsigned(0,"No Description")
198        CP0_IntCtl_IPPCI = Param.Unsigned(0,"No Description")
199        CP0_SrsCtl_HSS = Param.Unsigned(0,"No Description")
200        CP0_EBase_CPUNum = Param.Unsigned(0,"No Description")
201        CP0_PRId_CompanyOptions = Param.Unsigned(0,"Company Options in Processor ID Register")
202        CP0_PRId_CompanyID = Param.Unsigned(0,"Company Identifier in Processor ID Register")
203        CP0_PRId_ProcessorID = Param.Unsigned(1,"Processor ID (0=>Not MIPS32/64 Processor, 1=>MIPS, 2-255 => Other Company")
204        CP0_PRId_Revision = Param.Unsigned(0,"Processor Revision Number in Processor ID Register")
205        CP0_Config_BE = Param.Unsigned(0,"Big Endian?")
206        CP0_Config_AT = Param.Unsigned(0,"No Description")
207        CP0_Config_AR = Param.Unsigned(0,"No Description")
208        CP0_Config_MT = Param.Unsigned(0,"No Description")
209        CP0_Config_VI = Param.Unsigned(0,"No Description")
210        CP0_Config1_M = Param.Unsigned(0,"Config2 Implemented?")
211        CP0_Config1_MMU = Param.Unsigned(0,"MMU Type")
212        CP0_Config1_IS = Param.Unsigned(0,"No Description")
213        CP0_Config1_IL = Param.Unsigned(0,"No Description")
214        CP0_Config1_IA = Param.Unsigned(0,"No Description")
215        CP0_Config1_DS = Param.Unsigned(0,"No Description")
216        CP0_Config1_DL = Param.Unsigned(0,"No Description")
217        CP0_Config1_DA = Param.Unsigned(0,"No Description")
218        CP0_Config1_C2 = Param.Bool(False,"No Description")
219        CP0_Config1_MD = Param.Bool(False,"No Description")
220        CP0_Config1_PC = Param.Bool(False,"No Description")
221        CP0_Config1_WR = Param.Bool(False,"No Description")
222        CP0_Config1_CA = Param.Bool(False,"No Description")
223        CP0_Config1_EP = Param.Bool(False,"No Description")
224        CP0_Config1_FP = Param.Bool(False,"FPU Implemented?")
225        CP0_Config2_M = Param.Bool(False,"Config3 Implemented?")
226        CP0_Config2_TU = Param.Unsigned(0,"No Description")
227        CP0_Config2_TS = Param.Unsigned(0,"No Description")
228        CP0_Config2_TL = Param.Unsigned(0,"No Description")
229        CP0_Config2_TA = Param.Unsigned(0,"No Description")
230        CP0_Config2_SU = Param.Unsigned(0,"No Description")
231        CP0_Config2_SS = Param.Unsigned(0,"No Description")
232        CP0_Config2_SL = Param.Unsigned(0,"No Description")
233        CP0_Config2_SA = Param.Unsigned(0,"No Description")
234        CP0_Config3_M = Param.Bool(False,"Config4 Implemented?")
235        CP0_Config3_DSPP = Param.Bool(False,"DSP Extensions Present?")
236        CP0_Config3_LPA = Param.Bool(False,"No Description")
237        CP0_Config3_VEIC = Param.Bool(False,"No Description")
238        CP0_Config3_VInt = Param.Bool(False,"No Description")
239        CP0_Config3_SP = Param.Bool(False,"No Description")
240        CP0_Config3_MT = Param.Bool(False,"Multithreading Extensions Present?")
241        CP0_Config3_SM = Param.Bool(False,"No Description")
242        CP0_Config3_TL = Param.Bool(False,"No Description")
243        CP0_WatchHi_M = Param.Bool(False,"No Description")
244        CP0_PerfCtr_M = Param.Bool(False,"No Description")
245        CP0_PerfCtr_W = Param.Bool(False,"No Description")
246        CP0_PRId = Param.Unsigned(0,"CP0 Status Register")
247        CP0_Config = Param.Unsigned(0,"CP0 Config Register")
248        CP0_Config1 = Param.Unsigned(0,"CP0 Config1 Register")
249        CP0_Config2 = Param.Unsigned(0,"CP0 Config2 Register")
250        CP0_Config3 = Param.Unsigned(0,"CP0 Config3 Register")
251