fa32ad4941
Make clang >= 3.5 happy when compiling build/ARM/gem5.opt on OSX.
135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
/*
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* Copyright (c) 2010-2012 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Ali Saidi
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*/
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#ifndef __DEV_ARM_RTC_PL310_HH__
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#define __DEV_ARM_RTC_PL310_HH__
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#include "dev/arm/amba_device.hh"
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#include "params/PL031.hh"
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/** @file
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* This implements the ARM Primecell 031 RTC
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*/
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class PL031 : public AmbaIntDevice
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{
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protected:
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enum {
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DataReg = 0x00,
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MatchReg = 0x04,
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LoadReg = 0x08,
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ControlReg = 0x0C,
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IntMask = 0x10,
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RawISR = 0x14,
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MaskedISR = 0x18,
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IntClear = 0x1C,
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};
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/* Seconds since epoch that correspond to time simulation was started at the
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* begining of simulation and is then updated if ever written. */
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uint32_t timeVal;
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/* Time when the timeVal register was written */
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Tick lastWrittenTick;
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/* Previous load value */
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uint32_t loadVal;
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/* RTC Match Value
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* Cause an interrupt when this value hits counter
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*/
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uint32_t matchVal;
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/** If timer has caused an interrupt. This is irrespective of
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* interrupt enable */
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bool rawInt;
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/** If the timer interrupt mask that is anded with the raw interrupt to
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* generate a pending interrupt
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*/
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bool maskInt;
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/** If an interrupt is currently pending. Logical and of CTRL.intEnable
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* and rawInt */
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bool pendingInt;
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/** Called when the counter reaches matches */
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void counterMatch();
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EventWrapper<PL031, &PL031::counterMatch> matchEvent;
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/** Called to update the matchEvent when the load Value or match value are
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* written.
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*/
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void resyncMatch();
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public:
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typedef PL031Params Params;
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const Params *
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params() const
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{
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return dynamic_cast<const Params *>(_params);
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}
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/**
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* The constructor for RealView just registers itself with the MMU.
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* @param p params structure
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*/
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PL031(Params *p);
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/**
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* Handle a read to the device
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* @param pkt The memory request.
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* @param data Where to put the data.
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*/
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Tick read(PacketPtr pkt) override;
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/**
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* Handle writes to the device
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* @param pkt The memory request.
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* @param data the data
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*/
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Tick write(PacketPtr pkt) override;
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void serialize(CheckpointOut &cp) const override;
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void unserialize(CheckpointIn &cp) override;
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};
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#endif // __DEV_ARM_RTC_PL031_HH__
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