111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
/*
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* Copyright (c) 2010 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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#include "base/trace.hh"
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#include "dev/arm/rv_ctrl.hh"
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#include "mem/packet.hh"
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#include "mem/packet_access.hh"
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RealViewCtrl::RealViewCtrl(Params *p)
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: BasicPioDevice(p)
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{
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pioSize = 0xD4;
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}
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Tick
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RealViewCtrl::read(PacketPtr pkt)
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{
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assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
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assert(pkt->getSize() == 4);
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Addr daddr = pkt->getAddr() - pioAddr;
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pkt->allocate();
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switch(daddr) {
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case ProcId:
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pkt->set(params()->proc_id);
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break;
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case Clock24:
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Tick clk;
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clk = (Tick)(curTick / (24 * SimClock::Float::MHz));
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pkt->set((uint32_t)(clk));
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break;
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case Flash:
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pkt->set<uint32_t>(0);
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break;
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default:
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panic("Tried to read RealView I/O at offset %#x that doesn't exist\n", daddr);
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break;
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}
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pkt->makeAtomicResponse();
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return pioDelay;
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}
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Tick
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RealViewCtrl::write(PacketPtr pkt)
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{
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assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
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Addr daddr = pkt->getAddr() - pioAddr;
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switch (daddr) {
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case Flash:
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break;
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default:
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panic("Tried to write RVIO at offset %#x that doesn't exist\n", daddr);
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break;
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}
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pkt->makeAtomicResponse();
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return pioDelay;
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}
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void
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RealViewCtrl::serialize(std::ostream &os)
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{
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}
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void
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RealViewCtrl::unserialize(Checkpoint *cp, const std::string §ion)
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{
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}
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RealViewCtrl *
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RealViewCtrlParams::create()
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{
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return new RealViewCtrl(this);
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}
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