cmos.hh revision 5452
112855Sgabeblack@google.com/* 212855Sgabeblack@google.com * Copyright (c) 2008 The Regents of The University of Michigan 312855Sgabeblack@google.com * All rights reserved. 412855Sgabeblack@google.com * 512855Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 612855Sgabeblack@google.com * modification, are permitted provided that the following conditions are 712855Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 812855Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 912855Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1012855Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1112855Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1212855Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1312855Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1412855Sgabeblack@google.com * this software without specific prior written permission. 1512855Sgabeblack@google.com * 1612855Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1712855Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1812855Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1912855Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2012855Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2112855Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2212855Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2312855Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2412855Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2512855Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2612855Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2712855Sgabeblack@google.com * 2812855Sgabeblack@google.com * Authors: Gabe Black 2912855Sgabeblack@google.com */ 3012855Sgabeblack@google.com 3112855Sgabeblack@google.com#ifndef __DEV_X86_SOUTH_BRIDGE_CMOS_HH__ 3212855Sgabeblack@google.com#define __DEV_X86_SOUTH_BRIDGE_CMOS_HH__ 3312855Sgabeblack@google.com 3412855Sgabeblack@google.com#include "arch/x86/x86_traits.hh" 3512855Sgabeblack@google.com#include "base/range.hh" 3612855Sgabeblack@google.com#include "dev/mc146818.hh" 3712855Sgabeblack@google.com#include "dev/x86/south_bridge/sub_device.hh" 3812855Sgabeblack@google.com 3912855Sgabeblack@google.comnamespace X86ISA 4012855Sgabeblack@google.com{ 4112855Sgabeblack@google.com 4212855Sgabeblack@google.comclass Cmos : public SubDevice 4312855Sgabeblack@google.com{ 4412855Sgabeblack@google.com protected: 4512855Sgabeblack@google.com uint8_t address; 4612855Sgabeblack@google.com 4712855Sgabeblack@google.com struct tm foo_time; 4812855Sgabeblack@google.com 4912855Sgabeblack@google.com static const int numRegs = 128; 5012855Sgabeblack@google.com 5112855Sgabeblack@google.com uint8_t regs[numRegs]; 5212855Sgabeblack@google.com 5312855Sgabeblack@google.com uint8_t readRegister(uint8_t reg); 5412855Sgabeblack@google.com void writeRegister(uint8_t reg, uint8_t val); 5512855Sgabeblack@google.com 5612855Sgabeblack@google.com class X86RTC : public MC146818 5712855Sgabeblack@google.com { 5812855Sgabeblack@google.com public: 5912855Sgabeblack@google.com X86RTC(const std::string &n, const struct tm time, 6012855Sgabeblack@google.com bool bcd, Tick frequency) : MC146818(n, time, bcd, frequency) 6112855Sgabeblack@google.com { 6212855Sgabeblack@google.com } 6312855Sgabeblack@google.com protected: 6412855Sgabeblack@google.com void handleEvent() 65 { 66 return; 67 } 68 } rtc; 69 70 public: 71 72 Cmos() : rtc("rtc", foo_time, true, ULL(5000000000)) 73 { 74 memset(regs, 0, numRegs * sizeof(uint8_t)); 75 address = 0; 76 } 77 78 Cmos(Tick _latency) : SubDevice(_latency), 79 rtc("rtc", foo_time, true, ULL(5000000000)) 80 { 81 memset(regs, 0, numRegs * sizeof(uint8_t)); 82 address = 0; 83 } 84 85 Cmos(Addr start, Addr size, Tick _latency) : 86 SubDevice(start, size, _latency), 87 rtc("rtc", foo_time, true, ULL(5000000000)) 88 { 89 memset(regs, 0, numRegs * sizeof(uint8_t)); 90 address = 0; 91 } 92 93 Tick read(PacketPtr pkt); 94 95 Tick write(PacketPtr pkt); 96}; 97 98}; // namespace X86ISA 99 100#endif //__DEV_X86_SOUTH_BRIDGE_CMOS_HH__ 101