sim/system.cc

   1 /*
   2  * Copyright (c) 2002-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "base/loader/object_file.hh"
  30 #include "base/loader/symtab.hh"
  31 #include "base/remote_gdb.hh"
  32 #include "cpu/exec_context.hh"
  33 #include "kern/kernel_stats.hh"
  34 #include "mem/functional/memory_control.hh"
  35 #include "mem/functional/physical.hh"
  36 #include "targetarch/vtophys.hh"
  37 #include "sim/builder.hh"
  38 #include "sim/system.hh"
  39 #include "base/trace.hh"
  40
  41 using namespace std;
  42
  43 vector<System *> System::systemList;
  44
  45 int System::numSystemsRunning = 0;
  46
  47 System::System(Params *p)
  48     : SimObject(p->name), memctrl(p->memctrl), physmem(p->physmem),
  49       init_param(p->init_param), numcpus(0), params(p)
  50 {
  51     // add self to global system list
  52     systemList.push_back(this);
  53
  54     kernelSymtab = new SymbolTable;
  55     consoleSymtab = new SymbolTable;
  56     palSymtab = new SymbolTable;
  57     debugSymbolTable = new SymbolTable;
  58
  59     /**
  60      * Load the kernel, pal, and console code into memory
  61      */
  62     // Load kernel code
  63     kernel = createObjectFile(params->kernel_path);
  64     if (kernel == NULL)
  65         fatal("Could not load kernel file %s", params->kernel_path);
  66
  67     // Load Console Code
  68     console = createObjectFile(params->console_path);
  69     if (console == NULL)
  70         fatal("Could not load console file %s", params->console_path);
  71
  72     // Load pal file
  73     pal = createObjectFile(params->palcode);
  74     if (pal == NULL)
  75         fatal("Could not load PALcode file %s", params->palcode);
  76
  77
  78     // Load program sections into memory
  79     pal->loadSections(physmem, true);
  80     console->loadSections(physmem, true);
  81     kernel->loadSections(physmem, true);
  82
  83     // setup entry points
  84     kernelStart = kernel->textBase();
  85     kernelEnd = kernel->bssBase() + kernel->bssSize();
  86     kernelEntry = kernel->entryPoint();
  87
  88     // load symbols
  89     if (!kernel->loadGlobalSymbols(kernelSymtab))
  90         panic("could not load kernel symbols\n");
  91
  92     if (!kernel->loadLocalSymbols(kernelSymtab))
  93         panic("could not load kernel local symbols\n");
  94
  95     if (!console->loadGlobalSymbols(consoleSymtab))
  96         panic("could not load console symbols\n");
  97
  98     if (!pal->loadGlobalSymbols(palSymtab))
  99         panic("could not load pal symbols\n");
 100
 101     if (!pal->loadLocalSymbols(palSymtab))
 102         panic("could not load pal symbols\n");
 103
 104     if (!kernel->loadGlobalSymbols(debugSymbolTable))
 105         panic("could not load kernel symbols\n");
 106
 107     if (!kernel->loadLocalSymbols(debugSymbolTable))
 108         panic("could not load kernel local symbols\n");
 109
 110     if (!console->loadGlobalSymbols(debugSymbolTable))
 111         panic("could not load console symbols\n");
 112
 113     if (!pal->loadGlobalSymbols(debugSymbolTable))
 114         panic("could not load pal symbols\n");
 115
 116     if (!pal->loadLocalSymbols(debugSymbolTable))
 117         panic("could not load pal symbols\n");
 118
 119
 120     DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
 121     DPRINTF(Loader, "Kernel end   = %#x\n", kernelEnd);
 122     DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
 123     DPRINTF(Loader, "Kernel loaded...\n");
 124
 125     Addr addr = 0;
 126 #ifdef DEBUG
 127     consolePanicEvent = new BreakPCEvent(&pcEventQueue, "console panic");
 128     if (consoleSymtab->findAddress("panic", addr))
 129         consolePanicEvent->schedule(addr);
 130 #endif
 131
 132     /**
 133      * Copy the osflags (kernel arguments) into the consoles
 134      * memory. (Presently Linux does not use the console service
 135      * routine to get these command line arguments, but Tru64 and
 136      * others do.)
 137      */
 138     if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
 139         Addr paddr = vtophys(physmem, addr);
 140         char *osflags = (char *)physmem->dma_addr(paddr, sizeof(uint32_t));
 141
 142         if (osflags)
 143               strcpy(osflags, params->boot_osflags.c_str());
 144     }
 145
 146     /**
 147      * Set the hardware reset parameter block system type and revision
 148      * information to Tsunami.
 149      */
 150     if (consoleSymtab->findAddress("m5_rpb", addr)) {
 151         Addr paddr = vtophys(physmem, addr);
 152         char *hwrpb = (char *)physmem->dma_addr(paddr, sizeof(uint64_t));
 153
 154         if (!hwrpb)
 155             panic("could not translate hwrpb addr\n");
 156
 157         *(uint64_t*)(hwrpb+0x50) = htog(params->system_type);
 158         *(uint64_t*)(hwrpb+0x58) = htog(params->system_rev);
 159     } else
 160         panic("could not find hwrpb\n");
 161
 162     // increment the number of running systms
 163     numSystemsRunning++;
 164
 165     kernelBinning = new Kernel::Binning(this);
 166 }
 167
 168 System::~System()
 169 {
 170     delete kernelSymtab;
 171     delete consoleSymtab;
 172     delete kernel;
 173     delete console;
 174     delete pal;
 175
 176     delete kernelBinning;
 177
 178 #ifdef DEBUG
 179     delete consolePanicEvent;
 180 #endif
 181 }
 182
 183 void
 184 System::setAlphaAccess(Addr access)
 185 {
 186     Addr addr = 0;
 187     if (consoleSymtab->findAddress("m5AlphaAccess", addr)) {
 188         Addr paddr = vtophys(physmem, addr);
 189         uint64_t *m5AlphaAccess =
 190             (uint64_t *)physmem->dma_addr(paddr, sizeof(uint64_t));
 191
 192         if (!m5AlphaAccess)
 193             panic("could not translate m5AlphaAccess addr\n");
 194
 195         *m5AlphaAccess = htog(EV5::Phys2K0Seg(access));
 196     } else
 197         panic("could not find m5AlphaAccess\n");
 198 }
 199
 200 bool
 201 System::breakpoint()
 202 {
 203     return remoteGDB[0]->trap(ALPHA_KENTRY_INT);
 204 }
 205
 206 int rgdb_wait = -1;
 207
 208 int
 209 System::registerExecContext(ExecContext *xc, int id)
 210 {
 211     if (id == -1) {
 212         for (id = 0; id < execContexts.size(); id++) {
 213             if (!execContexts[id])
 214                 break;
 215         }
 216     }
 217
 218     if (execContexts.size() <= id)
 219         execContexts.resize(id + 1);
 220
 221     if (execContexts[id])
 222         panic("Cannot have two CPUs with the same id (%d)\n", id);
 223
 224     execContexts[id] = xc;
 225     numcpus++;
 226
 227     RemoteGDB *rgdb = new RemoteGDB(this, xc);
 228     GDBListener *gdbl = new GDBListener(rgdb, 7000 + id);
 229     gdbl->listen();
 230     /**
 231      * Uncommenting this line waits for a remote debugger to connect
 232      * to the simulator before continuing.
 233      */
 234     if (rgdb_wait != -1 && rgdb_wait == id)
 235         gdbl->accept();
 236
 237     if (remoteGDB.size() <= id) {
 238         remoteGDB.resize(id + 1);
 239     }
 240
 241     remoteGDB[id] = rgdb;
 242
 243     return id;
 244 }
 245
 246 void
 247 System::startup()
 248 {
 249     if (!execContexts.empty()) {
 250         // activate with zero delay so that we start ticking right
 251         // away on cycle 0
 252         execContexts[0]->activate(0);
 253     }
 254 }
 255
 256 void
 257 System::replaceExecContext(ExecContext *xc, int id)
 258 {
 259     if (id >= execContexts.size()) {
 260         panic("replaceExecContext: bad id, %d >= %d\n",
 261               id, execContexts.size());
 262     }
 263
 264     execContexts[id] = xc;
 265     remoteGDB[id]->replaceExecContext(xc);
 266 }
 267
 268 void
 269 System::regStats()
 270 {
 271     kernelBinning->regStats(name() + ".kern");
 272 }
 273
 274 void
 275 System::serialize(ostream &os)
 276 {
 277     kernelBinning->serialize(os);
 278 }
 279
 280
 281 void
 282 System::unserialize(Checkpoint *cp, const string &section)
 283 {
 284     kernelBinning->unserialize(cp, section);
 285 }
 286
 287 void
 288 System::printSystems()
 289 {
 290     vector<System *>::iterator i = systemList.begin();
 291     vector<System *>::iterator end = systemList.end();
 292     for (; i != end; ++i) {
 293         System *sys = *i;
 294         cerr << "System " << sys->name() << ": " << hex << sys << endl;
 295     }
 296 }
 297
 298 extern "C"
 299 void
 300 printSystems()
 301 {
 302     System::printSystems();
 303 }
 304
 305 BEGIN_DECLARE_SIM_OBJECT_PARAMS(System)
 306
 307     Param<Tick> boot_cpu_frequency;
 308     SimObjectParam<MemoryController *> memctrl;
 309     SimObjectParam<PhysicalMemory *> physmem;
 310
 311     Param<string> kernel;
 312     Param<string> console;
 313     Param<string> pal;
 314
 315     Param<string> boot_osflags;
 316     Param<string> readfile;
 317     Param<unsigned int> init_param;
 318
 319     Param<uint64_t> system_type;
 320     Param<uint64_t> system_rev;
 321
 322     Param<bool> bin;
 323     VectorParam<string> binned_fns;
 324     Param<bool> bin_int;
 325
 326 END_DECLARE_SIM_OBJECT_PARAMS(System)
 327
 328 BEGIN_INIT_SIM_OBJECT_PARAMS(System)
 329
 330     INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"),
 331     INIT_PARAM(memctrl, "memory controller"),
 332     INIT_PARAM(physmem, "phsyical memory"),
 333     INIT_PARAM(kernel, "file that contains the kernel code"),
 334     INIT_PARAM(console, "file that contains the console code"),
 335     INIT_PARAM(pal, "file that contains palcode"),
 336     INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
 337                     "a"),
 338     INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
 339     INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
 340     INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
 341     INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10),
 342     INIT_PARAM_DFLT(bin, "is this system to be binned", false),
 343     INIT_PARAM(binned_fns, "functions to be broken down and binned"),
 344     INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true)
 345
 346 END_INIT_SIM_OBJECT_PARAMS(System)
 347
 348 CREATE_SIM_OBJECT(System)
 349 {
 350     System::Params *p = new System::Params;
 351     p->name = getInstanceName();
 352     p->boot_cpu_frequency = boot_cpu_frequency;
 353     p->memctrl = memctrl;
 354     p->physmem = physmem;
 355     p->kernel_path = kernel;
 356     p->console_path = console;
 357     p->palcode = pal;
 358     p->boot_osflags = boot_osflags;
 359     p->init_param = init_param;
 360     p->readfile = readfile;
 361     p->system_type = system_type;
 362     p->system_rev = system_rev;
 363     p->bin = bin;
 364     p->binned_fns = binned_fns;
 365     p->bin_int = bin_int;
 366     return new System(p);
 367 }
 368
 369 REGISTER_SIM_OBJECT("System", System)
 370