cmos.hh revision 5452
1/* 2 * Copyright (c) 2008 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Gabe Black 29 */ 30 31#ifndef __DEV_X86_SOUTH_BRIDGE_CMOS_HH__ 32#define __DEV_X86_SOUTH_BRIDGE_CMOS_HH__ 33 34#include "arch/x86/x86_traits.hh" 35#include "base/range.hh" 36#include "dev/mc146818.hh" 37#include "dev/x86/south_bridge/sub_device.hh" 38 39namespace X86ISA 40{ 41 42class Cmos : public SubDevice 43{ 44 protected: 45 uint8_t address; 46 47 struct tm foo_time; 48 49 static const int numRegs = 128; 50 51 uint8_t regs[numRegs]; 52 53 uint8_t readRegister(uint8_t reg); 54 void writeRegister(uint8_t reg, uint8_t val); 55 56 class X86RTC : public MC146818 57 { 58 public: 59 X86RTC(const std::string &n, const struct tm time, 60 bool bcd, Tick frequency) : MC146818(n, time, bcd, frequency) 61 { 62 } 63 protected: 64 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