system.cc revision 6378 
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
46using namespace LittleEndianGuest;
47
48MipsSystem::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
117MipsSystem::~MipsSystem()
118{
119}
120
121#if FULL_SYSTEM
122Addr
123MipsSystem::fixFuncEventAddr(Addr addr)
124{
125    return addr;
126}
127
128void
129MipsSystem::setMipsAccess(Addr access)
130{}
131
132#endif
133
134bool
135MipsSystem::breakpoint()
136{
137    return 0;
138}
139
140void
141MipsSystem::serialize(std::ostream &os)
142{
143    System::serialize(os);
144}
145
146
147void
148MipsSystem::unserialize(Checkpoint *cp, const std::string &section)
149{
150    System::unserialize(cp,section);
151}
152
153MipsSystem *
154MipsSystemParams::create()
155{
156    return new MipsSystem(this);
157}
158
159