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