fs_bigLITTLE.py (11569:2eae1dfaa791) | fs_bigLITTLE.py (11630:6e2408ad4425) |
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1# Copyright (c) 2016 ARM Limited 2# All rights reserved. 3# 4# The license below extends only to copyright in the software and shall 5# not be construed as granting a license to any other intellectual 6# property including but not limited to intellectual property relating 7# to a hardware implementation of the functionality of the software 8# licensed hereunder. You may use the software subject to the license --- 46 unchanged lines hidden (view full) --- 55 56default_dtb = 'armv8_gem5_v1_big_little_2_2.dtb' 57default_kernel = 'vmlinux4.3.aarch64' 58default_disk = 'aarch64-ubuntu-trusty-headless.img' 59default_rcs = 'bootscript.rcS' 60 61default_mem_size= "2GB" 62 | 1# Copyright (c) 2016 ARM Limited 2# All rights reserved. 3# 4# The license below extends only to copyright in the software and shall 5# not be construed as granting a license to any other intellectual 6# property including but not limited to intellectual property relating 7# to a hardware implementation of the functionality of the software 8# licensed hereunder. You may use the software subject to the license --- 46 unchanged lines hidden (view full) --- 55 56default_dtb = 'armv8_gem5_v1_big_little_2_2.dtb' 57default_kernel = 'vmlinux4.3.aarch64' 58default_disk = 'aarch64-ubuntu-trusty-headless.img' 59default_rcs = 'bootscript.rcS' 60 61default_mem_size= "2GB" 62 |
63def createSystem(kernel, mem_mode, bootscript, disks=[]): | 63 64class BigCluster(devices.CpuCluster): 65 def __init__(self, system, num_cpus, cpu_clock, 66 cpu_voltage="1.0V"): 67 cpu_config = [ CpuConfig.get("arm_detailed"), devices.L1I, devices.L1D, 68 devices.WalkCache, devices.L2 ] 69 super(BigCluster, self).__init__(system, num_cpus, cpu_clock, 70 cpu_voltage, *cpu_config) 71 72class LittleCluster(devices.CpuCluster): 73 def __init__(self, system, num_cpus, cpu_clock, 74 cpu_voltage="1.0V"): 75 cpu_config = [ CpuConfig.get("minor"), devices.L1I, devices.L1D, 76 devices.WalkCache, devices.L2 ] 77 super(LittleCluster, self).__init__(system, num_cpus, cpu_clock, 78 cpu_voltage, *cpu_config) 79 80 81def createSystem(kernel, bootscript, disks=[]): |
64 sys = devices.SimpleSystem(kernel=SysPaths.binary(kernel), 65 readfile=bootscript, | 82 sys = devices.SimpleSystem(kernel=SysPaths.binary(kernel), 83 readfile=bootscript, |
66 mem_mode=mem_mode, | |
67 machine_type="DTOnly") 68 69 mem_region = sys.realview._mem_regions[0] 70 sys.mem_ctrls = SimpleMemory( 71 range=AddrRange(start=mem_region[0], size=default_mem_size)) 72 sys.mem_ctrls.port = sys.membus.master 73 74 sys.connect() --- 11 unchanged lines hidden (view full) --- 86 for dev in sys.pci_vio_block: 87 sys.attach_pci(dev) 88 89 sys.realview.setupBootLoader(sys.membus, sys, SysPaths.binary) 90 91 return sys 92 93 | 84 machine_type="DTOnly") 85 86 mem_region = sys.realview._mem_regions[0] 87 sys.mem_ctrls = SimpleMemory( 88 range=AddrRange(start=mem_region[0], size=default_mem_size)) 89 sys.mem_ctrls.port = sys.membus.master 90 91 sys.connect() --- 11 unchanged lines hidden (view full) --- 103 for dev in sys.pci_vio_block: 104 sys.attach_pci(dev) 105 106 sys.realview.setupBootLoader(sys.membus, sys, SysPaths.binary) 107 108 return sys 109 110 |
94class CpuCluster(SubSystem): 95 def addCPUs(self, cpu_config, num_cpus, cpu_clock, cpu_voltage="1.0V"): 96 try: 97 self._cluster_id 98 m5.util.panic("CpuCluster.addCPUs() must be called exactly once") 99 except AttributeError: 100 pass 101 102 assert num_cpus > 0 103 system = self._parent 104 self._cluster_id = len(system._clusters) 105 system._clusters.append(self) 106 self._config = cpu_config 107 108 self.voltage_domain = VoltageDomain(voltage=cpu_voltage) 109 self.clk_domain = SrcClockDomain(clock=cpu_clock, 110 voltage_domain=self.voltage_domain) 111 112 cpu_class = cpu_config['cpu'] 113 self.cpus = [ cpu_class(cpu_id=len(system._cpus) + idx, 114 clk_domain=self.clk_domain) 115 for idx in range(num_cpus) ] 116 117 for cpu in self.cpus: 118 cpu.createThreads() 119 cpu.createInterruptController() 120 cpu.socket_id = self._cluster_id 121 system._cpus.append(cpu) 122 123 def createCache(self, key): 124 try: 125 return self._config[key]() 126 except KeyError: 127 return None 128 129 def addL1(self): 130 self._cluster_id 131 for cpu in self.cpus: 132 l1i = self.createCache('l1i') 133 l1d = self.createCache('l1d') 134 iwc = self.createCache('wcache') 135 dwc = self.createCache('wcache') 136 cpu.addPrivateSplitL1Caches(l1i, l1d, iwc, dwc) 137 138 def addL2(self, clk_domain): 139 self._cluster_id 140 self.toL2Bus = L2XBar(width=64, clk_domain=clk_domain) 141 #self.toL2Bus = L2XBar(width=64, clk_domain=clk_domain, 142 #snoop_filter=NULL) 143 self.l2 = self._config['l2']() 144 for cpu in self.cpus: 145 cpu.connectAllPorts(self.toL2Bus) 146 self.toL2Bus.master = self.l2.cpu_side 147 148 def connectMemSide(self, bus): 149 self._cluster_id 150 bus.slave 151 try: 152 self.l2.mem_side = bus.slave 153 except AttributeError: 154 for cpu in self.cpus: 155 cpu.connectAllPorts(bus) 156 157 158def addCaches(system, last_cache_level): 159 cluster_mem_bus = system.membus 160 assert last_cache_level >= 1 and last_cache_level <= 3 161 for cluster in system._clusters: 162 cluster.addL1() 163 if last_cache_level > 1: 164 for cluster in system._clusters: 165 cluster.addL2(cluster.clk_domain) 166 if last_cache_level > 2: 167 max_clock_cluster = max(system._clusters, 168 key=lambda c: c.clk_domain.clock[0]) 169 system.l3 = devices.L3(clk_domain=max_clock_cluster.clk_domain) 170 system.toL3Bus = L2XBar(width=64) 171 system.toL3Bus.master = system.l3.cpu_side 172 system.l3.mem_side = system.membus.slave 173 cluster_mem_bus = system.toL3Bus 174 175 return cluster_mem_bus 176 177 | |
178def main(): 179 parser = argparse.ArgumentParser( 180 description="Generic ARM big.LITTLE configuration") 181 182 parser.add_argument("--restore-from", type=str, default=None, 183 help="Restore from checkpoint") 184 parser.add_argument("--dtb", type=str, default=default_dtb, 185 help="DTB file to load") --- 19 unchanged lines hidden (view full) --- 205 help="Big CPU clock frequency") 206 parser.add_argument("--little-cpu-clock", type=str, default="1GHz", 207 help="Little CPU clock frequency") 208 209 m5.ticks.fixGlobalFrequency() 210 211 options = parser.parse_args() 212 | 111def main(): 112 parser = argparse.ArgumentParser( 113 description="Generic ARM big.LITTLE configuration") 114 115 parser.add_argument("--restore-from", type=str, default=None, 116 help="Restore from checkpoint") 117 parser.add_argument("--dtb", type=str, default=default_dtb, 118 help="DTB file to load") --- 19 unchanged lines hidden (view full) --- 138 help="Big CPU clock frequency") 139 parser.add_argument("--little-cpu-clock", type=str, default="1GHz", 140 help="Little CPU clock frequency") 141 142 m5.ticks.fixGlobalFrequency() 143 144 options = parser.parse_args() 145 |
213 if options.atomic: 214 cpu_config = { 'cpu' : AtomicSimpleCPU } 215 big_cpu_config, little_cpu_config = cpu_config, cpu_config 216 else: 217 big_cpu_config = { 'cpu' : CpuConfig.get("arm_detailed"), 218 'l1i' : devices.L1I, 219 'l1d' : devices.L1D, 220 'wcache' : devices.WalkCache, 221 'l2' : devices.L2 } 222 little_cpu_config = { 'cpu' : MinorCPU, 223 'l1i' : devices.L1I, 224 'l1d' : devices.L1D, 225 'wcache' : devices.WalkCache, 226 'l2' : devices.L2 } 227 228 big_cpu_class = big_cpu_config['cpu'] 229 little_cpu_class = little_cpu_config['cpu'] 230 | |
231 kernel_cmd = [ 232 "earlyprintk=pl011,0x1c090000", 233 "console=ttyAMA0", 234 "lpj=19988480", 235 "norandmaps", 236 "loglevel=8", 237 "mem=%s" % default_mem_size, 238 "root=/dev/vda1", 239 "rw", 240 "init=%s" % options.kernel_init, 241 "vmalloc=768MB", 242 ] 243 244 root = Root(full_system=True) 245 | 146 kernel_cmd = [ 147 "earlyprintk=pl011,0x1c090000", 148 "console=ttyAMA0", 149 "lpj=19988480", 150 "norandmaps", 151 "loglevel=8", 152 "mem=%s" % default_mem_size, 153 "root=/dev/vda1", 154 "rw", 155 "init=%s" % options.kernel_init, 156 "vmalloc=768MB", 157 ] 158 159 root = Root(full_system=True) 160 |
246 assert big_cpu_class.memory_mode() == little_cpu_class.memory_mode() | |
247 disks = default_disk if len(options.disk) == 0 else options.disk | 161 disks = default_disk if len(options.disk) == 0 else options.disk |
248 system = createSystem(options.kernel, big_cpu_class.memory_mode(), 249 options.bootscript, disks=disks) | 162 system = createSystem(options.kernel, options.bootscript, disks=disks) |
250 251 root.system = system 252 system.boot_osflags = " ".join(kernel_cmd) 253 | 163 164 root.system = system 165 system.boot_osflags = " ".join(kernel_cmd) 166 |
254 # big cluster 255 if options.big_cpus > 0: 256 system.bigCluster = CpuCluster() 257 system.bigCluster.addCPUs(big_cpu_config, options.big_cpus, 258 options.big_cpu_clock) | 167 AtomicCluster = devices.AtomicCluster |
259 | 168 |
169 if options.big_cpus + options.little_cpus == 0: 170 m5.util.panic("Empty CPU clusters") |
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260 | 171 |
261 # LITTLE cluster | 172 # big cluster 173 if options.big_cpus > 0: 174 if options.atomic: 175 system.bigCluster = AtomicCluster(system, options.big_cpus, 176 options.big_cpu_clock) 177 else: 178 system.bigCluster = BigCluster(system, options.big_cpus, 179 options.big_cpu_clock) 180 mem_mode = system.bigCluster.memoryMode() 181 # little cluster |
262 if options.little_cpus > 0: | 182 if options.little_cpus > 0: |
263 system.littleCluster = CpuCluster() 264 system.littleCluster.addCPUs(little_cpu_config, options.little_cpus, 265 options.little_cpu_clock) | 183 if options.atomic: 184 system.littleCluster = AtomicCluster(system, options.little_cpus, 185 options.little_cpu_clock) |
266 | 186 |
267 # add caches 268 if options.caches: 269 cluster_mem_bus = addCaches(system, options.last_cache_level) 270 else: 271 if big_cpu_class.require_caches(): 272 m5.util.panic("CPU model %s requires caches" % str(big_cpu_class)) 273 if little_cpu_class.require_caches(): 274 m5.util.panic("CPU model %s requires caches" % 275 str(little_cpu_class)) 276 cluster_mem_bus = system.membus | 187 else: 188 system.littleCluster = LittleCluster(system, options.little_cpus, 189 options.little_cpu_clock) 190 mem_mode = system.littleCluster.memoryMode() |
277 | 191 |
278 # connect each cluster to the memory hierarchy 279 for cluster in system._clusters: 280 cluster.connectMemSide(cluster_mem_bus) | 192 if options.big_cpus > 0 and options.little_cpus > 0: 193 if system.bigCluster.memoryMode() != system.littleCluster.memoryMode(): 194 m5.util.panic("Memory mode missmatch among CPU clusters") 195 system.mem_mode = mem_mode |
281 | 196 |
197 # create caches 198 system.addCaches(options.caches, options.last_cache_level) 199 if not options.caches: 200 if options.big_cpus > 0 and system.bigCluster.requireCaches(): 201 m5.util.panic("Big CPU model requires caches") 202 if options.little_cpus > 0 and system.littleCluster.requireCaches(): 203 m5.util.panic("Little CPU model requires caches") 204 |
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282 # Linux device tree 283 system.dtb_filename = SysPaths.binary(options.dtb) 284 285 # Get and load from the chkpt or simpoint checkpoint 286 if options.restore_from is not None: 287 m5.instantiate(options.restore_from) 288 else: 289 m5.instantiate() --- 19 unchanged lines hidden --- | 205 # Linux device tree 206 system.dtb_filename = SysPaths.binary(options.dtb) 207 208 # Get and load from the chkpt or simpoint checkpoint 209 if options.restore_from is not None: 210 m5.instantiate(options.restore_from) 211 else: 212 m5.instantiate() --- 19 unchanged lines hidden --- |