e820.cc revision 14010
112837Sgabeblack@google.com/* 212837Sgabeblack@google.com * Copyright (c) 2008 The Hewlett-Packard Development Company 312837Sgabeblack@google.com * All rights reserved. 412837Sgabeblack@google.com * 512837Sgabeblack@google.com * The license below extends only to copyright in the software and shall 612837Sgabeblack@google.com * not be construed as granting a license to any other intellectual 712837Sgabeblack@google.com * property including but not limited to intellectual property relating 812837Sgabeblack@google.com * to a hardware implementation of the functionality of the software 912837Sgabeblack@google.com * licensed hereunder. You may use the software subject to the license 1012837Sgabeblack@google.com * terms below provided that you ensure that this notice is replicated 1112837Sgabeblack@google.com * unmodified and in its entirety in all distributions of the software, 1212837Sgabeblack@google.com * modified or unmodified, in source code or in binary form. 1312837Sgabeblack@google.com * 1412837Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 1512837Sgabeblack@google.com * modification, are permitted provided that the following conditions are 1612837Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 1712837Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 1812837Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1912837Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 2012837Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 2112837Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 2212837Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 2312837Sgabeblack@google.com * this software without specific prior written permission. 2412837Sgabeblack@google.com * 2512837Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2612837Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2712837Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2812837Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2912837Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3012837Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3112837Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3212837Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3312837Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3412837Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3512837Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3612837Sgabeblack@google.com * 3712837Sgabeblack@google.com * Authors: Gabe Black 3812837Sgabeblack@google.com */ 3912837Sgabeblack@google.com 4012837Sgabeblack@google.com#include "arch/x86/bios/e820.hh" 4112837Sgabeblack@google.com 4212837Sgabeblack@google.com#include "arch/x86/isa_traits.hh" 4312837Sgabeblack@google.com#include "mem/port_proxy.hh" 4412837Sgabeblack@google.com#include "sim/byteswap.hh" 4512837Sgabeblack@google.com 4612837Sgabeblack@google.comusing namespace std; 4712837Sgabeblack@google.comusing namespace X86ISA; 4812837Sgabeblack@google.com 4912837Sgabeblack@google.comtemplate<class T> 5012837Sgabeblack@google.comvoid writeVal(T val, PortProxy& proxy, Addr &addr) 5112837Sgabeblack@google.com{ 5212837Sgabeblack@google.com T guestVal = htog(val); 5312837Sgabeblack@google.com proxy.writeBlob(addr, &guestVal, sizeof(T)); 5412837Sgabeblack@google.com addr += sizeof(T); 5512837Sgabeblack@google.com} 5612837Sgabeblack@google.com 57void X86ISA::E820Table::writeTo(PortProxy& proxy, Addr countAddr, Addr addr) 58{ 59 uint8_t e820Nr = entries.size(); 60 61 // Make sure the number of entries isn't bigger than what the kernel 62 // would be capable of handling. 63 assert(e820Nr <= 128); 64 65 uint8_t guestE820Nr = htog(e820Nr); 66 67 proxy.writeBlob(countAddr, &guestE820Nr, sizeof(guestE820Nr)); 68 69 for (int i = 0; i < e820Nr; i++) { 70 writeVal(entries[i]->addr, proxy, addr); 71 writeVal(entries[i]->size, proxy, addr); 72 writeVal(entries[i]->type, proxy, addr); 73 } 74} 75 76E820Table * 77X86E820TableParams::create() 78{ 79 return new E820Table(this); 80} 81 82E820Entry * 83X86E820EntryParams::create() 84{ 85 return new E820Entry(this); 86} 87