sim/system.cc

   1 /*
   2  * Copyright (c) 2002-2004 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_mem/memory_control.hh"
  35 #include "mem/functional_mem/physical_memory.hh"
  36 #include "targetarch/vtophys.hh"
  37 #include "sim/param.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 extern SymbolTable *debugSymbolTable;
  48
  49 System::System(Params *p)
  50     : SimObject(p->name), memctrl(p->memctrl), physmem(p->physmem),
  51       init_param(p->init_param), params(p)
  52 {
  53     // add self to global system list
  54     systemList.push_back(this);
  55
  56     kernelSymtab = new SymbolTable;
  57     consoleSymtab = new SymbolTable;
  58     palSymtab = new SymbolTable;
  59     debugSymbolTable = new SymbolTable;
  60
  61     /**
  62      * Load the kernel, pal, and console code into memory
  63      */
  64     // Load kernel code
  65     kernel = createObjectFile(params->kernel_path);
  66     if (kernel == NULL)
  67         fatal("Could not load kernel file %s", params->kernel_path);
  68
  69     // Load Console Code
  70     console = createObjectFile(params->console_path);
  71     if (console == NULL)
  72         fatal("Could not load console file %s", params->console_path);
  73
  74     // Load pal file
  75     pal = createObjectFile(params->palcode);
  76     if (pal == NULL)
  77         fatal("Could not load PALcode file %s", params->palcode);
  78
  79
  80     // Load program sections into memory
  81     pal->loadSections(physmem, true);
  82     console->loadSections(physmem, true);
  83     kernel->loadSections(physmem, true);
  84
  85     // setup entry points
  86     kernelStart = kernel->textBase();
  87     kernelEnd = kernel->bssBase() + kernel->bssSize();
  88     kernelEntry = kernel->entryPoint();
  89
  90     // load symbols
  91     if (!kernel->loadGlobalSymbols(kernelSymtab))
  92         panic("could not load kernel symbols\n");
  93
  94     if (!kernel->loadLocalSymbols(kernelSymtab))
  95         panic("could not load kernel local symbols\n");
  96
  97     if (!console->loadGlobalSymbols(consoleSymtab))
  98         panic("could not load console symbols\n");
  99
 100     if (!pal->loadGlobalSymbols(palSymtab))
 101         panic("could not load pal symbols\n");
 102
 103     if (!pal->loadLocalSymbols(palSymtab))
 104         panic("could not load pal symbols\n");
 105
 106     if (!kernel->loadGlobalSymbols(debugSymbolTable))
 107         panic("could not load kernel symbols\n");
 108
 109     if (!kernel->loadLocalSymbols(debugSymbolTable))
 110         panic("could not load kernel local symbols\n");
 111
 112     if (!console->loadGlobalSymbols(debugSymbolTable))
 113         panic("could not load console symbols\n");
 114
 115     if (!pal->loadGlobalSymbols(debugSymbolTable))
 116         panic("could not load pal symbols\n");
 117
 118     if (!pal->loadLocalSymbols(debugSymbolTable))
 119         panic("could not load pal symbols\n");
 120
 121
 122     DPRINTF(Loader, "Kernel start = %#x\n", kernelStart);
 123     DPRINTF(Loader, "Kernel end   = %#x\n", kernelEnd);
 124     DPRINTF(Loader, "Kernel entry = %#x\n", kernelEntry);
 125     DPRINTF(Loader, "Kernel loaded...\n");
 126
 127     Addr addr = 0;
 128 #ifdef DEBUG
 129     consolePanicEvent = new BreakPCEvent(&pcEventQueue, "console panic");
 130     if (consoleSymtab->findAddress("panic", addr))
 131         consolePanicEvent->schedule(addr);
 132 #endif
 133
 134     /**
 135      * Copy the osflags (kernel arguments) into the consoles
 136      * memory. (Presently Linux does not use the console service
 137      * routine to get these command line arguments, but Tru64 and
 138      * others do.)
 139      */
 140     if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
 141         Addr paddr = vtophys(physmem, addr);
 142         char *osflags = (char *)physmem->dma_addr(paddr, sizeof(uint32_t));
 143
 144         if (osflags)
 145               strcpy(osflags, params->boot_osflags.c_str());
 146     }
 147
 148     /**
 149      * Set the hardware reset parameter block system type and revision
 150      * information to Tsunami.
 151      */
 152     if (consoleSymtab->findAddress("xxm_rpb", addr)) {
 153         Addr paddr = vtophys(physmem, addr);
 154         char *hwrpb = (char *)physmem->dma_addr(paddr, sizeof(uint64_t));
 155
 156         if (!hwrpb)
 157             panic("could not translate hwrpb addr\n");
 158
 159         *(uint64_t*)(hwrpb+0x50) = params->system_type;
 160         *(uint64_t*)(hwrpb+0x58) = params->system_rev;
 161     } else
 162         panic("could not find hwrpb\n");
 163
 164     // increment the number of running systms
 165     numSystemsRunning++;
 166
 167     kernelBinning = new Kernel::Binning(this);
 168 }
 169
 170 System::~System()
 171 {
 172     delete kernelSymtab;
 173     delete consoleSymtab;
 174     delete kernel;
 175     delete console;
 176     delete pal;
 177
 178     delete kernelBinning;
 179
 180 #ifdef DEBUG
 181     delete consolePanicEvent;
 182 #endif
 183 }
 184
 185 bool
 186 System::breakpoint()
 187 {
 188     return remoteGDB[0]->trap(ALPHA_KENTRY_INT);
 189 }
 190
 191 int
 192 System::registerExecContext(ExecContext *xc)
 193 {
 194     int xcIndex = execContexts.size();
 195     execContexts.push_back(xc);
 196
 197     if (xcIndex == 0) {
 198         // activate with zero delay so that we start ticking right
 199         // away on cycle 0
 200         xc->activate(0);
 201     }
 202
 203     RemoteGDB *rgdb = new RemoteGDB(this, xc);
 204     GDBListener *gdbl = new GDBListener(rgdb, 7000 + xcIndex);
 205     gdbl->listen();
 206     /**
 207      * Uncommenting this line waits for a remote debugger to connect
 208      * to the simulator before continuing.
 209      */
 210     //gdbl->accept();
 211
 212     if (remoteGDB.size() <= xcIndex) {
 213         remoteGDB.resize(xcIndex+1);
 214     }
 215
 216     remoteGDB[xcIndex] = rgdb;
 217
 218     return xcIndex;
 219 }
 220
 221 void
 222 System::replaceExecContext(ExecContext *xc, int xcIndex)
 223 {
 224     if (xcIndex >= execContexts.size()) {
 225         panic("replaceExecContext: bad xcIndex, %d >= %d\n",
 226               xcIndex, execContexts.size());
 227     }
 228
 229     execContexts[xcIndex] = xc;
 230     remoteGDB[xcIndex]->replaceExecContext(xc);
 231 }
 232
 233 void
 234 System::regStats()
 235 {
 236     kernelBinning->regStats(name() + ".kern");
 237 }
 238
 239 void
 240 System::serialize(ostream &os)
 241 {
 242     kernelBinning->serialize(os);
 243 }
 244
 245
 246 void
 247 System::unserialize(Checkpoint *cp, const string &section)
 248 {
 249     kernelBinning->unserialize(cp, section);
 250 }
 251
 252 void
 253 System::printSystems()
 254 {
 255     vector<System *>::iterator i = systemList.begin();
 256     vector<System *>::iterator end = systemList.end();
 257     for (; i != end; ++i) {
 258         System *sys = *i;
 259         cerr << "System " << sys->name() << ": " << hex << sys << endl;
 260     }
 261 }
 262
 263 extern "C"
 264 void
 265 printSystems()
 266 {
 267     System::printSystems();
 268 }
 269
 270 DEFINE_SIM_OBJECT_CLASS_NAME("System", System)
 271