system.cc revision 8775:1e3ca5d77b53 
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 "mem/vport.hh"
42#include "params/MipsSystem.hh"
43#include "sim/byteswap.hh"
44
45using namespace LittleEndianGuest;
46
47MipsSystem::MipsSystem(Params *p) : System(p)
48{
49    if (p->bare_iron == true) {
50        hexFile = new HexFile(params()->hex_file_name);
51        if (!hexFile->loadSections(functionalPort))
52            panic("Could not load hex file\n");
53    }
54
55    Addr addr = 0;
56
57    consoleSymtab = new SymbolTable;
58
59
60    /**
61     * Load the console code into memory
62     */
63    //    Load Console Code
64    console = createObjectFile(params()->console);
65
66    warn("console code is located at: %s\n", params()->console);
67
68    if (console == NULL)
69        fatal("Could not load console file %s", params()->console);
70    //Load program sections into memory
71    console->loadSections(functionalPort, loadAddrMask);
72
73    //load symbols
74    if (!console->loadGlobalSymbols(consoleSymtab))
75        panic("could not load console symbols\n");
76
77    if (!console->loadGlobalSymbols(debugSymbolTable))
78        panic("could not load console symbols\n");
79
80
81#ifndef NDEBUG
82    consolePanicEvent = addConsoleFuncEvent<BreakPCEvent>("panic");
83#endif
84
85    /**
86     * Copy the osflags (kernel arguments) into the consoles
87     * memory. (Presently Linux does not use the console service
88     * routine to get these command line arguments, but Tru64 and
89     * others do.)
90     */
91    if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
92        warn("writing addr starting from %#x", addr);
93        virtPort->writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
94                strlen(params()->boot_osflags.c_str()));
95    }
96
97    /**
98     * Set the hardware reset parameter block system type and revision
99     * information to Tsunami.
100     */
101    if (consoleSymtab->findAddress("m5_rpb", addr)) {
102        uint64_t data;
103        data = htog(params()->system_type);
104        virtPort->write(addr + 0x50, data);
105        data = htog(params()->system_rev);
106        virtPort->write(addr + 0x58, data);
107    } else {
108        panic("could not find hwrpb\n");
109    }
110}
111
112MipsSystem::~MipsSystem()
113{
114}
115
116Addr
117MipsSystem::fixFuncEventAddr(Addr addr)
118{
119    return addr;
120}
121
122void
123MipsSystem::setMipsAccess(Addr access)
124{}
125
126bool
127MipsSystem::breakpoint()
128{
129    return 0;
130}
131
132void
133MipsSystem::serialize(std::ostream &os)
134{
135    System::serialize(os);
136}
137
138
139void
140MipsSystem::unserialize(Checkpoint *cp, const std::string &section)
141{
142    System::unserialize(cp,section);
143}
144
145MipsSystem *
146MipsSystemParams::create()
147{
148    return new MipsSystem(this);
149}
150
151