system.cc revision 8852:c744483edfcf
18282SAli.Saidi@ARM.com/* 214082Stiago.muck@arm.com * Copyright (c) 2007-2008 The Hewlett-Packard Development Company 38282SAli.Saidi@ARM.com * All rights reserved. 48282SAli.Saidi@ARM.com * 58282SAli.Saidi@ARM.com * The license below extends only to copyright in the software and shall 68282SAli.Saidi@ARM.com * not be construed as granting a license to any other intellectual 78282SAli.Saidi@ARM.com * property including but not limited to intellectual property relating 88282SAli.Saidi@ARM.com * to a hardware implementation of the functionality of the software 98282SAli.Saidi@ARM.com * licensed hereunder. You may use the software subject to the license 108282SAli.Saidi@ARM.com * terms below provided that you ensure that this notice is replicated 118282SAli.Saidi@ARM.com * unmodified and in its entirety in all distributions of the software, 128282SAli.Saidi@ARM.com * modified or unmodified, in source code or in binary form. 138282SAli.Saidi@ARM.com * 148282SAli.Saidi@ARM.com * Redistribution and use in source and binary forms, with or without 158282SAli.Saidi@ARM.com * modification, are permitted provided that the following conditions are 168282SAli.Saidi@ARM.com * met: redistributions of source code must retain the above copyright 178282SAli.Saidi@ARM.com * notice, this list of conditions and the following disclaimer; 188282SAli.Saidi@ARM.com * redistributions in binary form must reproduce the above copyright 198282SAli.Saidi@ARM.com * notice, this list of conditions and the following disclaimer in the 208282SAli.Saidi@ARM.com * documentation and/or other materials provided with the distribution; 218282SAli.Saidi@ARM.com * neither the name of the copyright holders nor the names of its 228282SAli.Saidi@ARM.com * contributors may be used to endorse or promote products derived from 238282SAli.Saidi@ARM.com * this software without specific prior written permission. 248282SAli.Saidi@ARM.com * 258282SAli.Saidi@ARM.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 268282SAli.Saidi@ARM.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 278282SAli.Saidi@ARM.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 288282SAli.Saidi@ARM.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 298282SAli.Saidi@ARM.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 308282SAli.Saidi@ARM.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 318282SAli.Saidi@ARM.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 328282SAli.Saidi@ARM.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 338282SAli.Saidi@ARM.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 348282SAli.Saidi@ARM.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 358282SAli.Saidi@ARM.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 368282SAli.Saidi@ARM.com * 378282SAli.Saidi@ARM.com * Authors: Gabe Black 388282SAli.Saidi@ARM.com */ 398282SAli.Saidi@ARM.com 4011793Sbrandon.potter@amd.com#include "arch/x86/linux/system.hh" 4111793Sbrandon.potter@amd.com#include "arch/x86/regs/int.hh" 428282SAli.Saidi@ARM.com#include "arch/x86/isa_traits.hh" 438282SAli.Saidi@ARM.com#include "arch/vtophys.hh" 448282SAli.Saidi@ARM.com#include "base/trace.hh" 458282SAli.Saidi@ARM.com#include "cpu/thread_context.hh" 468282SAli.Saidi@ARM.com#include "mem/port_proxy.hh" 478282SAli.Saidi@ARM.com#include "params/LinuxX86System.hh" 488282SAli.Saidi@ARM.com#include "sim/byteswap.hh" 499808Sstever@gmail.com 508282SAli.Saidi@ARM.comusing namespace LittleEndianGuest; 518282SAli.Saidi@ARM.comusing namespace X86ISA; 528282SAli.Saidi@ARM.com 538282SAli.Saidi@ARM.comLinuxX86System::LinuxX86System(Params *p) 548282SAli.Saidi@ARM.com : X86System(p), commandLine(p->boot_osflags), e820Table(p->e820_table) 558282SAli.Saidi@ARM.com{ 568282SAli.Saidi@ARM.com} 578282SAli.Saidi@ARM.com 588282SAli.Saidi@ARM.comLinuxX86System::~LinuxX86System() 598282SAli.Saidi@ARM.com{ 608282SAli.Saidi@ARM.com} 618282SAli.Saidi@ARM.com 6213230Sgabeblack@google.comvoid 638282SAli.Saidi@ARM.comLinuxX86System::initState() 648282SAli.Saidi@ARM.com{ 6510186Smatt.evans@arm.com X86System::initState(); 6610186Smatt.evans@arm.com 6710186Smatt.evans@arm.com // The location of the real mode data structure. 6810186Smatt.evans@arm.com const Addr realModeData = 0x90200; 6910186Smatt.evans@arm.com 7010186Smatt.evans@arm.com /* 7110186Smatt.evans@arm.com * Deal with the command line stuff. 7210186Smatt.evans@arm.com */ 7310186Smatt.evans@arm.com 7410186Smatt.evans@arm.com // A buffer to store the command line. 758282SAli.Saidi@ARM.com const Addr commandLineBuff = 0x90000; 7614082Stiago.muck@arm.com // A pointer to the commandLineBuff stored in the real mode data. 778282SAli.Saidi@ARM.com const Addr commandLinePointer = realModeData + 0x228; 7813230Sgabeblack@google.com 798282SAli.Saidi@ARM.com if (commandLine.length() + 1 > realModeData - commandLineBuff) 808282SAli.Saidi@ARM.com panic("Command line \"%s\" is longer than %d characters.\n", 818282SAli.Saidi@ARM.com commandLine, realModeData - commandLineBuff - 1); 828282SAli.Saidi@ARM.com physProxy.writeBlob(commandLineBuff, (uint8_t *)commandLine.c_str(), 838282SAli.Saidi@ARM.com commandLine.length() + 1); 848282SAli.Saidi@ARM.com 858282SAli.Saidi@ARM.com // Generate a pointer of the right size and endianness to put into 868282SAli.Saidi@ARM.com // commandLinePointer. 878282SAli.Saidi@ARM.com uint32_t guestCommandLineBuff = 888282SAli.Saidi@ARM.com X86ISA::htog((uint32_t)commandLineBuff); 898282SAli.Saidi@ARM.com physProxy.writeBlob(commandLinePointer, (uint8_t *)&guestCommandLineBuff, 908282SAli.Saidi@ARM.com sizeof(guestCommandLineBuff)); 918282SAli.Saidi@ARM.com 928282SAli.Saidi@ARM.com /* 938282SAli.Saidi@ARM.com * Screen Info. 948282SAli.Saidi@ARM.com */ 958282SAli.Saidi@ARM.com 968282SAli.Saidi@ARM.com // We'll skip on this for now because it's only needed for framebuffers, 978282SAli.Saidi@ARM.com // something we don't support at the moment. 988282SAli.Saidi@ARM.com 9912049Sgedare@rtems.org /* 1008282SAli.Saidi@ARM.com * EDID info 1018282SAli.Saidi@ARM.com */ 1028282SAli.Saidi@ARM.com 1038282SAli.Saidi@ARM.com // Skipping for now. 1048282SAli.Saidi@ARM.com 1058282SAli.Saidi@ARM.com /* 1068282SAli.Saidi@ARM.com * Saved video mode 1078282SAli.Saidi@ARM.com */ 1088282SAli.Saidi@ARM.com 1098282SAli.Saidi@ARM.com // Skipping for now. 1108282SAli.Saidi@ARM.com 111 /* 112 * Loader type. 113 */ 114 115 // Skipping for now. 116 117 /* 118 * E820 memory map 119 */ 120 121 // A pointer to the number of E820 entries there are. 122 const Addr e820MapNrPointer = realModeData + 0x1e8; 123 124 // A pointer to the buffer for E820 entries. 125 const Addr e820MapPointer = realModeData + 0x2d0; 126 127 e820Table->writeTo(physProxy, e820MapNrPointer, e820MapPointer); 128 129 /* 130 * Pass the location of the real mode data structure to the kernel 131 * using register %esi. We'll use %rsi which should be equivalent. 132 */ 133 threadContexts[0]->setIntReg(INTREG_RSI, realModeData); 134} 135 136LinuxX86System * 137LinuxX86SystemParams::create() 138{ 139 return new LinuxX86System(this); 140} 141