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))
  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         virtPort.writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
  97                 strlen(params()->boot_osflags.c_str()));
  98     }
  99
 100     /**
 101      * Set the hardware reset parameter block system type and revision
 102      * information to Tsunami.
 103      */
 104     if (consoleSymtab->findAddress("m5_rpb", addr)) {
 105         uint64_t data;
 106         data = htog(params()->system_type);
 107         virtPort.write(addr + 0x50, data);
 108         data = htog(params()->system_rev);
 109         virtPort.write(addr + 0x58, data);
 110     } else {
 111         panic("could not find hwrpb\n");
 112     }
 113 #endif
 114 }
 115
 116 MipsSystem::~MipsSystem()
 117 {
 118 }
 119
 120 #if FULL_SYSTEM
 121 Addr
 122 MipsSystem::fixFuncEventAddr(Addr addr)
 123 {
 124     return addr;
 125 }
 126
 127 void
 128 MipsSystem::setMipsAccess(Addr access)
 129 {}
 130
 131 #endif
 132
 133 bool
 134 MipsSystem::breakpoint()
 135 {
 136     return 0;
 137 }
 138
 139 void
 140 MipsSystem::serialize(std::ostream &os)
 141 {
 142     System::serialize(os);
 143 }
 144
 145
 146 void
 147 MipsSystem::unserialize(Checkpoint *cp, const std::string &section)
 148 {
 149     System::unserialize(cp,section);
 150 }
 151
 152 MipsSystem *
 153 MipsSystemParams::create()
 154 {
 155     return new MipsSystem(this);
 156 }
 157