system.cc revision 8229:78bf55f23338 
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/loader/hex_file.hh"
37#include "base/loader/object_file.hh"
38#include "base/loader/symtab.hh"
39#include "base/trace.hh"
40#include "mem/physical.hh"
41#include "params/MipsSystem.hh"
42#include "sim/byteswap.hh"
43
44using namespace LittleEndianGuest;
45
46MipsSystem::MipsSystem(Params *p) : System(p)
47{
48
49#if FULL_SYSTEM
50    if (p->bare_iron == true) {
51        hexFile = new HexFile(params()->hex_file_name);
52        if (!hexFile->loadSections(functionalPort))
53            panic("Could not load hex file\n");
54    }
55
56    Addr addr = 0;
57
58    consoleSymtab = new SymbolTable;
59
60
61    /**
62     * Load the console code into memory
63     */
64    //    Load Console Code
65    console = createObjectFile(params()->console);
66
67    warn("console code is located at: %s\n", params()->console);
68
69    if (console == NULL)
70        fatal("Could not load console file %s", params()->console);
71    //Load program sections into memory
72    console->loadSections(functionalPort, loadAddrMask);
73
74    //load symbols
75    if (!console->loadGlobalSymbols(consoleSymtab))
76        panic("could not load console symbols\n");
77
78    if (!console->loadGlobalSymbols(debugSymbolTable))
79        panic("could not load console symbols\n");
80
81
82#ifndef NDEBUG
83    consolePanicEvent = addConsoleFuncEvent<BreakPCEvent>("panic");
84#endif
85
86    /**
87     * Copy the osflags (kernel arguments) into the consoles
88     * memory. (Presently Linux does not use the console service
89     * routine to get these command line arguments, but Tru64 and
90     * others do.)
91     */
92    if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
93        warn("writing addr starting from %#x", addr);
94        virtPort->writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
95                strlen(params()->boot_osflags.c_str()));
96    }
97
98    /**
99     * Set the hardware reset parameter block system type and revision
100     * information to Tsunami.
101     */
102    if (consoleSymtab->findAddress("m5_rpb", addr)) {
103        uint64_t data;
104        data = htog(params()->system_type);
105        virtPort->write(addr + 0x50, data);
106        data = htog(params()->system_rev);
107        virtPort->write(addr + 0x58, data);
108    } else {
109        panic("could not find hwrpb\n");
110    }
111#endif
112}
113
114MipsSystem::~MipsSystem()
115{
116}
117
118#if FULL_SYSTEM
119Addr
120MipsSystem::fixFuncEventAddr(Addr addr)
121{
122    return addr;
123}
124
125void
126MipsSystem::setMipsAccess(Addr access)
127{}
128
129#endif
130
131bool
132MipsSystem::breakpoint()
133{
134    return 0;
135}
136
137void
138MipsSystem::serialize(std::ostream &os)
139{
140    System::serialize(os);
141}
142
143
144void
145MipsSystem::unserialize(Checkpoint *cp, const std::string &section)
146{
147    System::unserialize(cp,section);
148}
149
150MipsSystem *
151MipsSystemParams::create()
152{
153    return new MipsSystem(this);
154}
155
156