src/arch/mips/system.cc

   1 /*
   2  * Copyright (c) 2002-2005 The Regents of The University of Michigan
   3  * Copyright (c) 2007 MIPS Technologies, Inc.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met: redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer;
  10  * redistributions in binary form must reproduce the above copyright
  11  * notice, this list of conditions and the following disclaimer in the
  12  * documentation and/or other materials provided with the distribution;
  13  * neither the name of the copyright holders nor the names of its
  14  * contributors may be used to endorse or promote products derived from
  15  * this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * Authors: Ali Saidi
  30  *          Nathan Binkert
  31  *          Jaidev Patwardhan
  32  */
  33
  34 #include "arch/mips/system.hh"
  35 #include "arch/vtophys.hh"
  36 #include "base/remote_gdb.hh"
  37 #include "base/loader/object_file.hh"
  38 #include "base/loader/hex_file.hh"
  39 #include "base/loader/symtab.hh"
  40 #include "base/trace.hh"
  41 #include "mem/physical.hh"
  42 #include "params/MipsSystem.hh"
  43 #include "sim/byteswap.hh"
  44
  45
  46 using namespace LittleEndianGuest;
  47
  48 MipsSystem::MipsSystem(Params *p) : System(p)
  49 {
  50
  51 #if FULL_SYSTEM
  52     if (p->bare_iron == true) {
  53         hexFile = new HexFile(params()->hex_file_name);
  54         if (!hexFile->loadSections(&functionalPort, MipsISA::LoadAddrMask))
  55             panic("Could not load hex file\n");
  56     }
  57
  58     Addr addr = 0;
  59
  60     consoleSymtab = new SymbolTable;
  61
  62
  63     /**
  64      * Load the console code into memory
  65      */
  66     //    Load Console Code
  67     console = createObjectFile(params()->console);
  68
  69     warn("console code is located at: %s\n", params()->console);
  70
  71     if (console == NULL)
  72         fatal("Could not load console file %s", params()->console);
  73     //Load program sections into memory
  74     console->loadSections(&functionalPort, MipsISA::LoadAddrMask);
  75
  76     //load symbols
  77     if (!console->loadGlobalSymbols(consoleSymtab))
  78         panic("could not load console symbols\n");
  79
  80     if (!console->loadGlobalSymbols(debugSymbolTable))
  81         panic("could not load console symbols\n");
  82
  83
  84 #ifndef NDEBUG
  85     consolePanicEvent = addConsoleFuncEvent<BreakPCEvent>("panic");
  86 #endif
  87
  88     /**
  89      * Copy the osflags (kernel arguments) into the consoles
  90      * memory. (Presently Linux does not use the console service
  91      * routine to get these command line arguments, but Tru64 and
  92      * others do.)
  93      */
  94     if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
  95         warn("writing addr starting from %#x", addr);
  96         cout << "-" << endl;
  97         virtPort.writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
  98                 strlen(params()->boot_osflags.c_str()));
  99     }
 100
 101     /**
 102      * Set the hardware reset parameter block system type and revision
 103      * information to Tsunami.
 104      */
 105     if (consoleSymtab->findAddress("m5_rpb", addr)) {
 106         uint64_t data;
 107         data = htog(params()->system_type);
 108         virtPort.write(addr + 0x50, data);
 109         data = htog(params()->system_rev);
 110         virtPort.write(addr + 0x58, data);
 111     } else {
 112         panic("could not find hwrpb\n");
 113     }
 114 #endif
 115 }
 116
 117 MipsSystem::~MipsSystem()
 118 {
 119 }
 120
 121 #if FULL_SYSTEM
 122 Addr
 123 MipsSystem::fixFuncEventAddr(Addr addr)
 124 {
 125     return addr;
 126 }
 127
 128 void
 129 MipsSystem::setMipsAccess(Addr access)
 130 {}
 131
 132 #endif
 133
 134 bool
 135 MipsSystem::breakpoint()
 136 {
 137     return 0;
 138 }
 139
 140 void
 141 MipsSystem::serialize(std::ostream &os)
 142 {
 143     System::serialize(os);
 144 }
 145
 146
 147 void
 148 MipsSystem::unserialize(Checkpoint *cp, const std::string &section)
 149 {
 150     System::unserialize(cp,section);
 151 }
 152
 153 MipsSystem *
 154 MipsSystemParams::create()
 155 {
 156     return new MipsSystem(this);
 157 }
 158