2 * Copyright (c) 2007-2008 The Hewlett-Packard Development Company
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use. Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 * Director of Intellectual Property Licensing
21 * Office of Strategy and Technology
22 * Hewlett-Packard Company
24 * Palo Alto, California 94304
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer. Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution. Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission. No right of
34 * sublicense is granted herewith. Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses. Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 #include "arch/x86/intregs.hh"
59 #include "arch/x86/linux/system.hh"
60 #include "arch/vtophys.hh"
61 #include "base/trace.hh"
62 #include "cpu/thread_context.hh"
63 #include "mem/physical.hh"
64 #include "params/LinuxX86System.hh"
67 using namespace LittleEndianGuest
;
68 using namespace X86ISA
;
70 LinuxX86System::LinuxX86System(Params
*p
)
71 : X86System(p
), commandLine(p
->boot_osflags
), e820Table(p
->e820_table
)
75 LinuxX86System::~LinuxX86System()
80 LinuxX86System::startup()
84 // The location of the real mode data structure.
85 const Addr realModeData
= 0x90200;
87 // A port to write to memory.
88 FunctionalPort
* physPort
= threadContexts
[0]->getPhysPort();
91 * Deal with the command line stuff.
94 // A buffer to store the command line.
95 const Addr commandLineBuff
= 0x90000;
96 // A pointer to the commandLineBuff stored in the real mode data.
97 const Addr commandLinePointer
= realModeData
+ 0x228;
99 if (commandLine
.length() + 1 > realModeData
- commandLineBuff
)
100 panic("Command line \"%s\" is longer than %d characters.\n",
101 commandLine
, realModeData
- commandLineBuff
- 1);
102 physPort
->writeBlob(commandLineBuff
,
103 (uint8_t *)commandLine
.c_str(), commandLine
.length() + 1);
105 // Generate a pointer of the right size and endianness to put into
106 // commandLinePointer.
107 uint32_t guestCommandLineBuff
=
108 X86ISA::htog((uint32_t)commandLineBuff
);
109 physPort
->writeBlob(commandLinePointer
,
110 (uint8_t *)&guestCommandLineBuff
, sizeof(guestCommandLineBuff
));
116 // We'll skip on this for now because it's only needed for framebuffers,
117 // something we don't support at the moment.
141 // A pointer to the number of E820 entries there are.
142 const Addr e820MapNrPointer
= realModeData
+ 0x1e8;
144 // A pointer to the buffer for E820 entries.
145 const Addr e820MapPointer
= realModeData
+ 0x2d0;
147 e820Table
->writeTo(physPort
, e820MapNrPointer
, e820MapPointer
);
150 * Pass the location of the real mode data structure to the kernel
151 * using register %esi. We'll use %rsi which should be equivalent.
153 threadContexts
[0]->setIntReg(INTREG_RSI
, realModeData
);
157 LinuxX86SystemParams::create()
159 return new LinuxX86System(this);