cmos.cc revision 13229
15390SN/A/* 25390SN/A * Copyright (c) 2004-2005 The Regents of The University of Michigan 35390SN/A * All rights reserved. 45390SN/A * 55390SN/A * Redistribution and use in source and binary forms, with or without 65390SN/A * modification, are permitted provided that the following conditions are 75390SN/A * met: redistributions of source code must retain the above copyright 85390SN/A * notice, this list of conditions and the following disclaimer; 95390SN/A * redistributions in binary form must reproduce the above copyright 105390SN/A * notice, this list of conditions and the following disclaimer in the 115390SN/A * documentation and/or other materials provided with the distribution; 125390SN/A * neither the name of the copyright holders nor the names of its 135390SN/A * contributors may be used to endorse or promote products derived from 145390SN/A * this software without specific prior written permission. 155390SN/A * 165390SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 175390SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 185390SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 195390SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 205390SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 215390SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 225390SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235390SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245390SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255390SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 265390SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275390SN/A * 285390SN/A * Authors: Gabe Black 295390SN/A */ 305390SN/A 3111793Sbrandon.potter@amd.com#include "dev/x86/cmos.hh" 3211793Sbrandon.potter@amd.com 338232Snate@binkert.org#include "debug/CMOS.hh" 345634Sgblack@eecs.umich.edu#include "dev/x86/intdev.hh" 355390SN/A#include "mem/packet_access.hh" 365390SN/A 375632Sgblack@eecs.umich.eduvoid 385632Sgblack@eecs.umich.eduX86ISA::Cmos::X86RTC::handleEvent() 395632Sgblack@eecs.umich.edu{ 405634Sgblack@eecs.umich.edu assert(intPin); 415827Sgblack@eecs.umich.edu intPin->raise(); 425827Sgblack@eecs.umich.edu //XXX This is a hack. 435827Sgblack@eecs.umich.edu intPin->lower(); 445632Sgblack@eecs.umich.edu} 455632Sgblack@eecs.umich.edu 465390SN/ATick 475390SN/AX86ISA::Cmos::read(PacketPtr pkt) 485390SN/A{ 495390SN/A assert(pkt->getSize() == 1); 505629Sgblack@eecs.umich.edu switch(pkt->getAddr() - pioAddr) 515390SN/A { 525390SN/A case 0x0: 5313229Sgabeblack@google.com pkt->setLE(address); 545390SN/A break; 555390SN/A case 0x1: 5613229Sgabeblack@google.com pkt->setLE(readRegister(address)); 575390SN/A break; 585390SN/A default: 595390SN/A panic("Read from undefined CMOS port.\n"); 605390SN/A } 615898Sgblack@eecs.umich.edu pkt->makeAtomicResponse(); 625390SN/A return latency; 635390SN/A} 645390SN/A 655390SN/ATick 665390SN/AX86ISA::Cmos::write(PacketPtr pkt) 675390SN/A{ 685390SN/A assert(pkt->getSize() == 1); 695629Sgblack@eecs.umich.edu switch(pkt->getAddr() - pioAddr) 705390SN/A { 715390SN/A case 0x0: 7213229Sgabeblack@google.com address = pkt->getLE<uint8_t>(); 735390SN/A break; 745390SN/A case 0x1: 7513229Sgabeblack@google.com writeRegister(address, pkt->getLE<uint8_t>()); 765390SN/A break; 775390SN/A default: 785390SN/A panic("Write to undefined CMOS port.\n"); 795390SN/A } 805898Sgblack@eecs.umich.edu pkt->makeAtomicResponse(); 815390SN/A return latency; 825390SN/A} 835390SN/A 845390SN/Auint8_t 855390SN/AX86ISA::Cmos::readRegister(uint8_t reg) 865390SN/A{ 875390SN/A assert(reg < numRegs); 885629Sgblack@eecs.umich.edu uint8_t val; 895393SN/A if (reg <= 0xD) { 905629Sgblack@eecs.umich.edu val = rtc.readData(reg); 915629Sgblack@eecs.umich.edu DPRINTF(CMOS, 927799Sgblack@eecs.umich.edu "Reading CMOS RTC reg %x as %x.\n", reg, val); 935393SN/A } else { 945629Sgblack@eecs.umich.edu val = regs[reg]; 955629Sgblack@eecs.umich.edu DPRINTF(CMOS, 967799Sgblack@eecs.umich.edu "Reading non-volitile CMOS address %x as %x.\n", reg, val); 975390SN/A } 985629Sgblack@eecs.umich.edu return val; 995390SN/A} 1005390SN/A 1015390SN/Avoid 1025390SN/AX86ISA::Cmos::writeRegister(uint8_t reg, uint8_t val) 1035390SN/A{ 1045390SN/A assert(reg < numRegs); 1055393SN/A if (reg <= 0xD) { 1065629Sgblack@eecs.umich.edu DPRINTF(CMOS, "Writing CMOS RTC reg %x with %x.\n", 1077799Sgblack@eecs.umich.edu reg, val); 1085393SN/A rtc.writeData(reg, val); 1095393SN/A } else { 1105629Sgblack@eecs.umich.edu DPRINTF(CMOS, "Writing non-volitile CMOS address %x with %x.\n", 1117799Sgblack@eecs.umich.edu reg, val); 1125629Sgblack@eecs.umich.edu regs[reg] = val; 1135390SN/A } 1145390SN/A} 1155629Sgblack@eecs.umich.edu 1167903Shestness@cs.utexas.eduvoid 11710631Scdirik@micron.comX86ISA::Cmos::startup() 11810631Scdirik@micron.com{ 11910631Scdirik@micron.com rtc.startup(); 12010631Scdirik@micron.com} 12110631Scdirik@micron.com 12210631Scdirik@micron.comvoid 12310905Sandreas.sandberg@arm.comX86ISA::Cmos::serialize(CheckpointOut &cp) const 1247903Shestness@cs.utexas.edu{ 1257903Shestness@cs.utexas.edu SERIALIZE_SCALAR(address); 1267903Shestness@cs.utexas.edu SERIALIZE_ARRAY(regs, numRegs); 1277903Shestness@cs.utexas.edu 1287903Shestness@cs.utexas.edu // Serialize the timer 12910905Sandreas.sandberg@arm.com rtc.serialize("rtc", cp); 1307903Shestness@cs.utexas.edu} 1317903Shestness@cs.utexas.edu 1327903Shestness@cs.utexas.eduvoid 13310905Sandreas.sandberg@arm.comX86ISA::Cmos::unserialize(CheckpointIn &cp) 1347903Shestness@cs.utexas.edu{ 1357903Shestness@cs.utexas.edu UNSERIALIZE_SCALAR(address); 1367903Shestness@cs.utexas.edu UNSERIALIZE_ARRAY(regs, numRegs); 1377903Shestness@cs.utexas.edu 1387903Shestness@cs.utexas.edu // Serialize the timer 13910905Sandreas.sandberg@arm.com rtc.unserialize("rtc", cp); 1407903Shestness@cs.utexas.edu} 1417903Shestness@cs.utexas.edu 1425629Sgblack@eecs.umich.eduX86ISA::Cmos * 1435629Sgblack@eecs.umich.eduCmosParams::create() 1445629Sgblack@eecs.umich.edu{ 1455629Sgblack@eecs.umich.edu return new X86ISA::Cmos(this); 1465629Sgblack@eecs.umich.edu} 147