e820.cc revision 5450
15450Sgblack@eecs.umich.edu/* 25450Sgblack@eecs.umich.edu * Copyright (c) 2008 The Hewlett-Packard Development Company 35450Sgblack@eecs.umich.edu * All rights reserved. 45450Sgblack@eecs.umich.edu * 55450Sgblack@eecs.umich.edu * Redistribution and use of this software in source and binary forms, 65450Sgblack@eecs.umich.edu * with or without modification, are permitted provided that the 75450Sgblack@eecs.umich.edu * following conditions are met: 85450Sgblack@eecs.umich.edu * 95450Sgblack@eecs.umich.edu * The software must be used only for Non-Commercial Use which means any 105450Sgblack@eecs.umich.edu * use which is NOT directed to receiving any direct monetary 115450Sgblack@eecs.umich.edu * compensation for, or commercial advantage from such use. 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IN NO EVENT SHALL THE COPYRIGHT 475450Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 485450Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 495450Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 505450Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 515450Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 525450Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 535450Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 545450Sgblack@eecs.umich.edu * 555450Sgblack@eecs.umich.edu * Authors: Gabe Black 565450Sgblack@eecs.umich.edu */ 575450Sgblack@eecs.umich.edu 585450Sgblack@eecs.umich.edu#include "arch/x86/bios/e820.hh" 595450Sgblack@eecs.umich.edu#include "arch/x86/isa_traits.hh" 605450Sgblack@eecs.umich.edu#include "mem/port.hh" 615450Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 625450Sgblack@eecs.umich.edu 635450Sgblack@eecs.umich.eduusing namespace std; 645450Sgblack@eecs.umich.eduusing namespace X86ISA; 655450Sgblack@eecs.umich.edu 665450Sgblack@eecs.umich.edutemplate<class T> 675450Sgblack@eecs.umich.eduvoid writeVal(T val, Port * port, Addr &addr) 685450Sgblack@eecs.umich.edu{ 695450Sgblack@eecs.umich.edu T guestVal = htog(val); 705450Sgblack@eecs.umich.edu port->writeBlob(addr, (uint8_t *)&guestVal, sizeof(T)); 715450Sgblack@eecs.umich.edu addr += sizeof(T); 725450Sgblack@eecs.umich.edu} 735450Sgblack@eecs.umich.edu 745450Sgblack@eecs.umich.eduvoid X86ISA::E820Table::writeTo(Port * port, Addr countAddr, Addr addr) 755450Sgblack@eecs.umich.edu{ 765450Sgblack@eecs.umich.edu uint8_t e820Nr = entries.size(); 775450Sgblack@eecs.umich.edu 785450Sgblack@eecs.umich.edu // Make sure the number of entries isn't bigger than what the kernel 795450Sgblack@eecs.umich.edu // would be capable of handling. 805450Sgblack@eecs.umich.edu assert(e820Nr <= 128); 815450Sgblack@eecs.umich.edu 825450Sgblack@eecs.umich.edu uint8_t guestE820Nr = htog(e820Nr); 835450Sgblack@eecs.umich.edu 845450Sgblack@eecs.umich.edu port->writeBlob(countAddr, (uint8_t *)&guestE820Nr, sizeof(guestE820Nr)); 855450Sgblack@eecs.umich.edu 865450Sgblack@eecs.umich.edu for (int i = 0; i < e820Nr; i++) { 875450Sgblack@eecs.umich.edu writeVal(entries[i]->addr, port, addr); 885450Sgblack@eecs.umich.edu writeVal(entries[i]->size, port, addr); 895450Sgblack@eecs.umich.edu writeVal(entries[i]->type, port, addr); 905450Sgblack@eecs.umich.edu } 915450Sgblack@eecs.umich.edu} 925450Sgblack@eecs.umich.edu 935450Sgblack@eecs.umich.eduE820Table * 945450Sgblack@eecs.umich.eduX86E820TableParams::create() 955450Sgblack@eecs.umich.edu{ 965450Sgblack@eecs.umich.edu return new E820Table(this); 975450Sgblack@eecs.umich.edu} 985450Sgblack@eecs.umich.edu 995450Sgblack@eecs.umich.eduE820Entry * 1005450Sgblack@eecs.umich.eduX86E820EntryParams::create() 1015450Sgblack@eecs.umich.edu{ 1025450Sgblack@eecs.umich.edu return new E820Entry(this); 1035450Sgblack@eecs.umich.edu} 104