system.cc revision 7723 
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/object_file.hh"
37#include "base/loader/hex_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
44
45using namespace LittleEndianGuest;
46
47MipsSystem::MipsSystem(Params *p) : System(p)
48{
49
50#if FULL_SYSTEM
51    if (p->bare_iron == true) {
52        hexFile = new HexFile(params()->hex_file_name);
53        if (!hexFile->loadSections(functionalPort))
54            panic("Could not load hex file\n");
55    }
56
57    Addr addr = 0;
58
59    consoleSymtab = new SymbolTable;
60
61
62    /**
63     * Load the console code into memory
64     */
65    //    Load Console Code
66    console = createObjectFile(params()->console);
67
68    warn("console code is located at: %s\n", params()->console);
69
70    if (console == NULL)
71        fatal("Could not load console file %s", params()->console);
72    //Load program sections into memory
73    console->loadSections(functionalPort, loadAddrMask);
74
75    //load symbols
76    if (!console->loadGlobalSymbols(consoleSymtab))
77        panic("could not load console symbols\n");
78
79    if (!console->loadGlobalSymbols(debugSymbolTable))
80        panic("could not load console symbols\n");
81
82
83#ifndef NDEBUG
84    consolePanicEvent = addConsoleFuncEvent<BreakPCEvent>("panic");
85#endif
86
87    /**
88     * Copy the osflags (kernel arguments) into the consoles
89     * memory. (Presently Linux does not use the console service
90     * routine to get these command line arguments, but Tru64 and
91     * others do.)
92     */
93    if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
94        warn("writing addr starting from %#x", addr);
95        virtPort->writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
96                strlen(params()->boot_osflags.c_str()));
97    }
98
99    /**
100     * Set the hardware reset parameter block system type and revision
101     * information to Tsunami.
102     */
103    if (consoleSymtab->findAddress("m5_rpb", addr)) {
104        uint64_t data;
105        data = htog(params()->system_type);
106        virtPort->write(addr + 0x50, data);
107        data = htog(params()->system_rev);
108        virtPort->write(addr + 0x58, data);
109    } else {
110        panic("could not find hwrpb\n");
111    }
112#endif
113}
114
115MipsSystem::~MipsSystem()
116{
117}
118
119#if FULL_SYSTEM
120Addr
121MipsSystem::fixFuncEventAddr(Addr addr)
122{
123    return addr;
124}
125
126void
127MipsSystem::setMipsAccess(Addr access)
128{}
129
130#endif
131
132bool
133MipsSystem::breakpoint()
134{
135    return 0;
136}
137
138void
139MipsSystem::serialize(std::ostream &os)
140{
141    System::serialize(os);
142}
143
144
145void
146MipsSystem::unserialize(Checkpoint *cp, const std::string &section)
147{
148    System::unserialize(cp,section);
149}
150
151MipsSystem *
152MipsSystemParams::create()
153{
154    return new MipsSystem(this);
155}
156
157