cmos.hh revision 9808
12379SN/A/*
22379SN/A * Copyright (c) 2008 The Regents of The University of Michigan
32379SN/A * All rights reserved.
42379SN/A *
52379SN/A * Redistribution and use in source and binary forms, with or without
62379SN/A * modification, are permitted provided that the following conditions are
72379SN/A * met: redistributions of source code must retain the above copyright
82379SN/A * notice, this list of conditions and the following disclaimer;
92379SN/A * redistributions in binary form must reproduce the above copyright
102379SN/A * notice, this list of conditions and the following disclaimer in the
112379SN/A * documentation and/or other materials provided with the distribution;
122379SN/A * neither the name of the copyright holders nor the names of its
132379SN/A * contributors may be used to endorse or promote products derived from
142379SN/A * this software without specific prior written permission.
152379SN/A *
162379SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
172379SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
182379SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
192379SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
202379SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
212379SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
222379SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
232379SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
242379SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
252379SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
262379SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
272665Ssaidi@eecs.umich.edu *
282665Ssaidi@eecs.umich.edu * Authors: Gabe Black
292379SN/A */
302379SN/A
312379SN/A#ifndef __DEV_X86_CMOS_HH__
322379SN/A#define __DEV_X86_CMOS_HH__
332379SN/A
342379SN/A#include "dev/io_device.hh"
352379SN/A#include "dev/mc146818.hh"
362379SN/A#include "params/Cmos.hh"
372379SN/A
382379SN/Anamespace X86ISA
392379SN/A{
402379SN/A
412980Sgblack@eecs.umich.educlass IntSourcePin;
422423SN/A
432809Ssaidi@eecs.umich.educlass Cmos : public BasicPioDevice
442379SN/A{
452394SN/A  protected:
462394SN/A    Tick latency;
472379SN/A
482379SN/A    uint8_t address;
492399SN/A
502379SN/A    static const int numRegs = 128;
512379SN/A
522982Sstever@eecs.umich.edu    uint8_t regs[numRegs];
532379SN/A
542399SN/A    uint8_t readRegister(uint8_t reg);
552379SN/A    void writeRegister(uint8_t reg, uint8_t val);
562379SN/A
572809Ssaidi@eecs.umich.edu    class X86RTC : public MC146818
582809Ssaidi@eecs.umich.edu    {
592809Ssaidi@eecs.umich.edu      protected:
602809Ssaidi@eecs.umich.edu        IntSourcePin * intPin;
612809Ssaidi@eecs.umich.edu      public:
622809Ssaidi@eecs.umich.edu        X86RTC(EventManager *em, const std::string &n, const struct tm time,
632809Ssaidi@eecs.umich.edu                bool bcd, Tick frequency, IntSourcePin * _intPin) :
642809Ssaidi@eecs.umich.edu            MC146818(em, n, time, bcd, frequency), intPin(_intPin)
652379SN/A        {
662399SN/A        }
672399SN/A      protected:
682399SN/A        void handleEvent();
692399SN/A    } rtc;
702379SN/A
712379SN/A  public:
722379SN/A    typedef CmosParams Params;
732423SN/A
742379SN/A    Cmos(const Params *p) : BasicPioDevice(p, 2), latency(p->pio_latency),
752379SN/A        rtc(this, "rtc", p->time, true, ULL(5000000000), p->int_pin)
762379SN/A    {
772399SN/A        memset(regs, 0, numRegs * sizeof(uint8_t));
782399SN/A        address = 0;
792379SN/A    }
802979Sgblack@eecs.umich.edu
812379SN/A    Tick read(PacketPtr pkt);
822979Sgblack@eecs.umich.edu
832399SN/A    Tick write(PacketPtr pkt);
842379SN/A
852379SN/A    virtual void serialize(std::ostream &os);
862379SN/A    virtual void unserialize(Checkpoint *cp, const std::string &section);
872379SN/A
882379SN/A};
892399SN/A
902379SN/A} // namespace X86ISA
912379SN/A
922399SN/A#endif //__DEV_X86_CMOS_HH__
932399SN/A