system.cc (5299:e61b9f2a9732) | system.cc (5303:ee44ea10f32f) |
---|---|
1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 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: 8 * --- 41 unchanged lines hidden (view full) --- 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. 54 * 55 * Authors: Gabe Black 56 */ 57 | 1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 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: 8 * --- 41 unchanged lines hidden (view full) --- 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. 54 * 55 * Authors: Gabe Black 56 */ 57 |
58#include "arch/x86/intregs.hh" |
|
58#include "arch/x86/linux/system.hh" 59#include "arch/vtophys.hh" 60#include "base/trace.hh" | 59#include "arch/x86/linux/system.hh" 60#include "arch/vtophys.hh" 61#include "base/trace.hh" |
62#include "cpu/thread_context.hh" |
|
61#include "mem/physical.hh" 62#include "params/LinuxX86System.hh" 63 64 65using namespace LittleEndianGuest; 66using namespace X86ISA; 67 68LinuxX86System::LinuxX86System(Params *p) --- 4 unchanged lines hidden (view full) --- 73LinuxX86System::~LinuxX86System() 74{ 75} 76 77void 78LinuxX86System::startup() 79{ 80 X86System::startup(); | 63#include "mem/physical.hh" 64#include "params/LinuxX86System.hh" 65 66 67using namespace LittleEndianGuest; 68using namespace X86ISA; 69 70LinuxX86System::LinuxX86System(Params *p) --- 4 unchanged lines hidden (view full) --- 75LinuxX86System::~LinuxX86System() 76{ 77} 78 79void 80LinuxX86System::startup() 81{ 82 X86System::startup(); |
81 //Build the real mode data structure. | 83 84 // The location of the real mode data structure. 85 const Addr realModeData = 0x90200; 86 87 // A port to write to memory. 88 FunctionalPort * physPort = threadContexts[0]->getPhysPort(); 89 90 /* 91 * Deal with the command line stuff. 92 */ 93 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; 98 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); 104 105 // 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)); 111 112 /* 113 * Screen Info. 114 */ 115 116 // We'll skip on this for now because it's only needed for framebuffers, 117 // something we don't support at the moment. 118 119 /* 120 * EDID info 121 */ 122 123 // Skipping for now. 124 125 /* 126 * Saved video mode 127 */ 128 129 // Skipping for now. 130 131 /* 132 * Loader type. 133 */ 134 135 // Skipping for now. 136 137 /* 138 * E820 memory map 139 */ 140 141 // A pointer to the number of E820 entries there are. 142 const Addr e820MapNrPointer = realModeData + 0x1e8; 143 144 // A pointer to the buffer for E820 entries. 145 const Addr e820MapPointer = realModeData + 0x2d0; 146 147 struct e820Entry 148 { 149 Addr addr; 150 Addr size; 151 uint32_t type; 152 }; 153 154 // The size is computed this way to ensure no padding sneaks in. 155 int e820EntrySize = 156 sizeof(e820Entry().addr) + 157 sizeof(e820Entry().size) + 158 sizeof(e820Entry().type); 159 160 // I'm not sure what these should actually be. On a real machine they 161 // would be generated by the BIOS, and they need to reflect the regions 162 // which are actually available/reserved. These values are copied from 163 // my development machine. 164 e820Entry e820Map[] = { 165 {ULL(0x0), ULL(0x9d400), 1}, 166 {ULL(0x9d400), ULL(0xa0000) - ULL(0x9d400), 2}, 167 {ULL(0xe8000), ULL(0x100000) - ULL(0xe8000), 2}, 168 {ULL(0x100000), ULL(0xcfff9300) - ULL(0x100000), 1}, 169 {ULL(0xcfff9300), ULL(0xd0000000) - ULL(0xcfff9300), 2}, 170 {ULL(0xfec00000), ULL(0x100000000) - ULL(0xfec00000), 2} 171 }; 172 173 uint8_t e820Nr = sizeof(e820Map) / sizeof(e820Entry); 174 175 // Make sure the number of entries isn't bigger than what the kernel 176 // would be capable of providing. 177 assert(e820Nr <= 128); 178 179 uint8_t guestE820Nr = X86ISA::htog(e820Nr); 180 physPort->writeBlob(e820MapNrPointer, 181 (uint8_t *)&guestE820Nr, sizeof(guestE820Nr)); 182 183 for (int i = 0; i < e820Nr; i++) { 184 e820Entry guestE820Entry; 185 guestE820Entry.addr = X86ISA::htog(e820Map[i].addr); 186 guestE820Entry.size = X86ISA::htog(e820Map[i].size); 187 guestE820Entry.type = X86ISA::htog(e820Map[i].type); 188 physPort->writeBlob(e820MapPointer + e820EntrySize * i, 189 (uint8_t *)&guestE820Entry.addr, 190 sizeof(guestE820Entry.addr)); 191 physPort->writeBlob( 192 e820MapPointer + e820EntrySize * i + 193 sizeof(guestE820Entry.addr), 194 (uint8_t *)&guestE820Entry.size, 195 sizeof(guestE820Entry.size)); 196 physPort->writeBlob( 197 e820MapPointer + e820EntrySize * i + 198 sizeof(guestE820Entry.addr) + 199 sizeof(guestE820Entry.size), 200 (uint8_t *)&guestE820Entry.type, 201 sizeof(guestE820Entry.type)); 202 } 203 204 /* 205 * Pass the location of the real mode data structure to the kernel 206 * using register %esi. We'll use %rsi which should be equivalent. 207 */ 208 threadContexts[0]->setIntReg(INTREG_RSI, realModeData); |
82} 83 84LinuxX86System * 85LinuxX86SystemParams::create() 86{ 87 return new LinuxX86System(this); 88} | 209} 210 211LinuxX86System * 212LinuxX86SystemParams::create() 213{ 214 return new LinuxX86System(this); 215} |