system.cc revision 5303
15299Sgblack@eecs.umich.edu/* 25299Sgblack@eecs.umich.edu * Copyright (c) 2007 The Hewlett-Packard Development Company 35299Sgblack@eecs.umich.edu * All rights reserved. 45299Sgblack@eecs.umich.edu * 55299Sgblack@eecs.umich.edu * Redistribution and use of this software in source and binary forms, 65299Sgblack@eecs.umich.edu * with or without modification, are permitted provided that the 75299Sgblack@eecs.umich.edu * following conditions are met: 85299Sgblack@eecs.umich.edu * 95299Sgblack@eecs.umich.edu * The software must be used only for Non-Commercial Use which means any 105299Sgblack@eecs.umich.edu * use which is NOT directed to receiving any direct monetary 115299Sgblack@eecs.umich.edu * compensation for, or commercial advantage from such use. Illustrative 125299Sgblack@eecs.umich.edu * examples of non-commercial use are academic research, personal study, 135299Sgblack@eecs.umich.edu * teaching, education and corporate research & development. 145299Sgblack@eecs.umich.edu * Illustrative examples of commercial use are distributing products for 155299Sgblack@eecs.umich.edu * commercial advantage and providing services using the software for 165299Sgblack@eecs.umich.edu * commercial advantage. 175299Sgblack@eecs.umich.edu * 185299Sgblack@eecs.umich.edu * If you wish to use this software or functionality therein that may be 195299Sgblack@eecs.umich.edu * covered by patents for commercial use, please contact: 205299Sgblack@eecs.umich.edu * Director of Intellectual Property Licensing 215299Sgblack@eecs.umich.edu * Office of Strategy and Technology 225299Sgblack@eecs.umich.edu * Hewlett-Packard Company 235299Sgblack@eecs.umich.edu * 1501 Page Mill Road 245299Sgblack@eecs.umich.edu * Palo Alto, California 94304 255299Sgblack@eecs.umich.edu * 265299Sgblack@eecs.umich.edu * Redistributions of source code must retain the above copyright notice, 275299Sgblack@eecs.umich.edu * this list of conditions and the following disclaimer. Redistributions 285299Sgblack@eecs.umich.edu * in binary form must reproduce the above copyright notice, this list of 295299Sgblack@eecs.umich.edu * conditions and the following disclaimer in the documentation and/or 305299Sgblack@eecs.umich.edu * other materials provided with the distribution. Neither the name of 315299Sgblack@eecs.umich.edu * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 325299Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 335299Sgblack@eecs.umich.edu * this software without specific prior written permission. No right of 345299Sgblack@eecs.umich.edu * sublicense is granted herewith. Derivatives of the software and 355299Sgblack@eecs.umich.edu * output created using the software may be prepared, but only for 365299Sgblack@eecs.umich.edu * Non-Commercial Uses. Derivatives of the software may be shared with 375299Sgblack@eecs.umich.edu * others provided: (i) the others agree to abide by the list of 385299Sgblack@eecs.umich.edu * conditions herein which includes the Non-Commercial Use restrictions; 395299Sgblack@eecs.umich.edu * and (ii) such Derivatives of the software include the above copyright 405299Sgblack@eecs.umich.edu * notice to acknowledge the contribution from this software where 415299Sgblack@eecs.umich.edu * applicable, this list of conditions and the disclaimer below. 425299Sgblack@eecs.umich.edu * 435299Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 445299Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 455299Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 465299Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 475299Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 485299Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 495299Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 505299Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 515299Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 525299Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 535299Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 545299Sgblack@eecs.umich.edu * 555299Sgblack@eecs.umich.edu * Authors: Gabe Black 565299Sgblack@eecs.umich.edu */ 575299Sgblack@eecs.umich.edu 585303Sgblack@eecs.umich.edu#include "arch/x86/intregs.hh" 595299Sgblack@eecs.umich.edu#include "arch/x86/linux/system.hh" 605299Sgblack@eecs.umich.edu#include "arch/vtophys.hh" 615299Sgblack@eecs.umich.edu#include "base/trace.hh" 625303Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 635299Sgblack@eecs.umich.edu#include "mem/physical.hh" 645299Sgblack@eecs.umich.edu#include "params/LinuxX86System.hh" 655299Sgblack@eecs.umich.edu 665299Sgblack@eecs.umich.edu 675299Sgblack@eecs.umich.eduusing namespace LittleEndianGuest; 685299Sgblack@eecs.umich.eduusing namespace X86ISA; 695299Sgblack@eecs.umich.edu 705299Sgblack@eecs.umich.eduLinuxX86System::LinuxX86System(Params *p) 715299Sgblack@eecs.umich.edu : X86System(p), commandLine(p->command_line) 725299Sgblack@eecs.umich.edu{ 735299Sgblack@eecs.umich.edu} 745299Sgblack@eecs.umich.edu 755299Sgblack@eecs.umich.eduLinuxX86System::~LinuxX86System() 765299Sgblack@eecs.umich.edu{ 775299Sgblack@eecs.umich.edu} 785299Sgblack@eecs.umich.edu 795299Sgblack@eecs.umich.eduvoid 805299Sgblack@eecs.umich.eduLinuxX86System::startup() 815299Sgblack@eecs.umich.edu{ 825299Sgblack@eecs.umich.edu X86System::startup(); 835303Sgblack@eecs.umich.edu 845303Sgblack@eecs.umich.edu // The location of the real mode data structure. 855303Sgblack@eecs.umich.edu const Addr realModeData = 0x90200; 865303Sgblack@eecs.umich.edu 875303Sgblack@eecs.umich.edu // A port to write to memory. 885303Sgblack@eecs.umich.edu FunctionalPort * physPort = threadContexts[0]->getPhysPort(); 895303Sgblack@eecs.umich.edu 905303Sgblack@eecs.umich.edu /* 915303Sgblack@eecs.umich.edu * Deal with the command line stuff. 925303Sgblack@eecs.umich.edu */ 935303Sgblack@eecs.umich.edu 945303Sgblack@eecs.umich.edu // A buffer to store the command line. 955303Sgblack@eecs.umich.edu const Addr commandLineBuff = 0x90000; 965303Sgblack@eecs.umich.edu // A pointer to the commandLineBuff stored in the real mode data. 975303Sgblack@eecs.umich.edu const Addr commandLinePointer = realModeData + 0x228; 985303Sgblack@eecs.umich.edu 995303Sgblack@eecs.umich.edu if (commandLine.length() + 1 > realModeData - commandLineBuff) 1005303Sgblack@eecs.umich.edu panic("Command line \"%s\" is longer than %d characters.\n", 1015303Sgblack@eecs.umich.edu commandLine, realModeData - commandLineBuff - 1); 1025303Sgblack@eecs.umich.edu physPort->writeBlob(commandLineBuff, 1035303Sgblack@eecs.umich.edu (uint8_t *)commandLine.c_str(), commandLine.length() + 1); 1045303Sgblack@eecs.umich.edu 1055303Sgblack@eecs.umich.edu // Generate a pointer of the right size and endianness to put into 1065303Sgblack@eecs.umich.edu // commandLinePointer. 1075303Sgblack@eecs.umich.edu uint32_t guestCommandLineBuff = 1085303Sgblack@eecs.umich.edu X86ISA::htog((uint32_t)commandLineBuff); 1095303Sgblack@eecs.umich.edu physPort->writeBlob(commandLinePointer, 1105303Sgblack@eecs.umich.edu (uint8_t *)&guestCommandLineBuff, sizeof(guestCommandLineBuff)); 1115303Sgblack@eecs.umich.edu 1125303Sgblack@eecs.umich.edu /* 1135303Sgblack@eecs.umich.edu * Screen Info. 1145303Sgblack@eecs.umich.edu */ 1155303Sgblack@eecs.umich.edu 1165303Sgblack@eecs.umich.edu // We'll skip on this for now because it's only needed for framebuffers, 1175303Sgblack@eecs.umich.edu // something we don't support at the moment. 1185303Sgblack@eecs.umich.edu 1195303Sgblack@eecs.umich.edu /* 1205303Sgblack@eecs.umich.edu * EDID info 1215303Sgblack@eecs.umich.edu */ 1225303Sgblack@eecs.umich.edu 1235303Sgblack@eecs.umich.edu // Skipping for now. 1245303Sgblack@eecs.umich.edu 1255303Sgblack@eecs.umich.edu /* 1265303Sgblack@eecs.umich.edu * Saved video mode 1275303Sgblack@eecs.umich.edu */ 1285303Sgblack@eecs.umich.edu 1295303Sgblack@eecs.umich.edu // Skipping for now. 1305303Sgblack@eecs.umich.edu 1315303Sgblack@eecs.umich.edu /* 1325303Sgblack@eecs.umich.edu * Loader type. 1335303Sgblack@eecs.umich.edu */ 1345303Sgblack@eecs.umich.edu 1355303Sgblack@eecs.umich.edu // Skipping for now. 1365303Sgblack@eecs.umich.edu 1375303Sgblack@eecs.umich.edu /* 1385303Sgblack@eecs.umich.edu * E820 memory map 1395303Sgblack@eecs.umich.edu */ 1405303Sgblack@eecs.umich.edu 1415303Sgblack@eecs.umich.edu // A pointer to the number of E820 entries there are. 1425303Sgblack@eecs.umich.edu const Addr e820MapNrPointer = realModeData + 0x1e8; 1435303Sgblack@eecs.umich.edu 1445303Sgblack@eecs.umich.edu // A pointer to the buffer for E820 entries. 1455303Sgblack@eecs.umich.edu const Addr e820MapPointer = realModeData + 0x2d0; 1465303Sgblack@eecs.umich.edu 1475303Sgblack@eecs.umich.edu struct e820Entry 1485303Sgblack@eecs.umich.edu { 1495303Sgblack@eecs.umich.edu Addr addr; 1505303Sgblack@eecs.umich.edu Addr size; 1515303Sgblack@eecs.umich.edu uint32_t type; 1525303Sgblack@eecs.umich.edu }; 1535303Sgblack@eecs.umich.edu 1545303Sgblack@eecs.umich.edu // The size is computed this way to ensure no padding sneaks in. 1555303Sgblack@eecs.umich.edu int e820EntrySize = 1565303Sgblack@eecs.umich.edu sizeof(e820Entry().addr) + 1575303Sgblack@eecs.umich.edu sizeof(e820Entry().size) + 1585303Sgblack@eecs.umich.edu sizeof(e820Entry().type); 1595303Sgblack@eecs.umich.edu 1605303Sgblack@eecs.umich.edu // I'm not sure what these should actually be. On a real machine they 1615303Sgblack@eecs.umich.edu // would be generated by the BIOS, and they need to reflect the regions 1625303Sgblack@eecs.umich.edu // which are actually available/reserved. These values are copied from 1635303Sgblack@eecs.umich.edu // my development machine. 1645303Sgblack@eecs.umich.edu e820Entry e820Map[] = { 1655303Sgblack@eecs.umich.edu {ULL(0x0), ULL(0x9d400), 1}, 1665303Sgblack@eecs.umich.edu {ULL(0x9d400), ULL(0xa0000) - ULL(0x9d400), 2}, 1675303Sgblack@eecs.umich.edu {ULL(0xe8000), ULL(0x100000) - ULL(0xe8000), 2}, 1685303Sgblack@eecs.umich.edu {ULL(0x100000), ULL(0xcfff9300) - ULL(0x100000), 1}, 1695303Sgblack@eecs.umich.edu {ULL(0xcfff9300), ULL(0xd0000000) - ULL(0xcfff9300), 2}, 1705303Sgblack@eecs.umich.edu {ULL(0xfec00000), ULL(0x100000000) - ULL(0xfec00000), 2} 1715303Sgblack@eecs.umich.edu }; 1725303Sgblack@eecs.umich.edu 1735303Sgblack@eecs.umich.edu uint8_t e820Nr = sizeof(e820Map) / sizeof(e820Entry); 1745303Sgblack@eecs.umich.edu 1755303Sgblack@eecs.umich.edu // Make sure the number of entries isn't bigger than what the kernel 1765303Sgblack@eecs.umich.edu // would be capable of providing. 1775303Sgblack@eecs.umich.edu assert(e820Nr <= 128); 1785303Sgblack@eecs.umich.edu 1795303Sgblack@eecs.umich.edu uint8_t guestE820Nr = X86ISA::htog(e820Nr); 1805303Sgblack@eecs.umich.edu physPort->writeBlob(e820MapNrPointer, 1815303Sgblack@eecs.umich.edu (uint8_t *)&guestE820Nr, sizeof(guestE820Nr)); 1825303Sgblack@eecs.umich.edu 1835303Sgblack@eecs.umich.edu for (int i = 0; i < e820Nr; i++) { 1845303Sgblack@eecs.umich.edu e820Entry guestE820Entry; 1855303Sgblack@eecs.umich.edu guestE820Entry.addr = X86ISA::htog(e820Map[i].addr); 1865303Sgblack@eecs.umich.edu guestE820Entry.size = X86ISA::htog(e820Map[i].size); 1875303Sgblack@eecs.umich.edu guestE820Entry.type = X86ISA::htog(e820Map[i].type); 1885303Sgblack@eecs.umich.edu physPort->writeBlob(e820MapPointer + e820EntrySize * i, 1895303Sgblack@eecs.umich.edu (uint8_t *)&guestE820Entry.addr, 1905303Sgblack@eecs.umich.edu sizeof(guestE820Entry.addr)); 1915303Sgblack@eecs.umich.edu physPort->writeBlob( 1925303Sgblack@eecs.umich.edu e820MapPointer + e820EntrySize * i + 1935303Sgblack@eecs.umich.edu sizeof(guestE820Entry.addr), 1945303Sgblack@eecs.umich.edu (uint8_t *)&guestE820Entry.size, 1955303Sgblack@eecs.umich.edu sizeof(guestE820Entry.size)); 1965303Sgblack@eecs.umich.edu physPort->writeBlob( 1975303Sgblack@eecs.umich.edu e820MapPointer + e820EntrySize * i + 1985303Sgblack@eecs.umich.edu sizeof(guestE820Entry.addr) + 1995303Sgblack@eecs.umich.edu sizeof(guestE820Entry.size), 2005303Sgblack@eecs.umich.edu (uint8_t *)&guestE820Entry.type, 2015303Sgblack@eecs.umich.edu sizeof(guestE820Entry.type)); 2025303Sgblack@eecs.umich.edu } 2035303Sgblack@eecs.umich.edu 2045303Sgblack@eecs.umich.edu /* 2055303Sgblack@eecs.umich.edu * Pass the location of the real mode data structure to the kernel 2065303Sgblack@eecs.umich.edu * using register %esi. We'll use %rsi which should be equivalent. 2075303Sgblack@eecs.umich.edu */ 2085303Sgblack@eecs.umich.edu threadContexts[0]->setIntReg(INTREG_RSI, realModeData); 2095299Sgblack@eecs.umich.edu} 2105299Sgblack@eecs.umich.edu 2115299Sgblack@eecs.umich.eduLinuxX86System * 2125299Sgblack@eecs.umich.eduLinuxX86SystemParams::create() 2135299Sgblack@eecs.umich.edu{ 2145299Sgblack@eecs.umich.edu return new LinuxX86System(this); 2155299Sgblack@eecs.umich.edu} 216