0b2d5e20d1
This clock is used by the linux scheduler.
168 lines
4.9 KiB
C++
168 lines
4.9 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), flags(0)
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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 ProcId0:
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pkt->set(params()->proc_id0);
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break;
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case ProcId1:
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pkt->set(params()->proc_id1);
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break;
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case Clock24:
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Tick clk;
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clk = SimClock::Float::MHz * curTick() * 24;
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pkt->set((uint32_t)(clk));
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break;
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case Clock100:
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Tick clk100;
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clk100 = SimClock::Float::MHz * curTick() * 100;
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pkt->set((uint32_t)(clk100));
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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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case Clcd:
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pkt->set<uint32_t>(0x00001F00);
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break;
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case Osc0:
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pkt->set<uint32_t>(0x00012C5C);
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break;
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case Osc1:
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pkt->set<uint32_t>(0x00002CC0);
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break;
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case Osc2:
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pkt->set<uint32_t>(0x00002C75);
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break;
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case Osc3:
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pkt->set<uint32_t>(0x00020211);
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break;
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case Osc4:
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pkt->set<uint32_t>(0x00002C75);
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break;
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case Lock:
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pkt->set<uint32_t>(sysLock);
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break;
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case Flags:
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pkt->set<uint32_t>(flags);
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break;
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case IdReg:
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pkt->set<uint32_t>(params()->idreg);
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break;
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case CfgStat:
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pkt->set<uint32_t>(1);
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break;
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default:
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warn("Tried to read RealView I/O at offset %#x that doesn't exist\n",
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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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case Clcd:
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case Osc0:
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case Osc1:
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case Osc2:
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case Osc3:
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case Osc4:
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break;
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case Lock:
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sysLock.lockVal = pkt->get<uint16_t>();
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break;
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case Flags:
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flags = pkt->get<uint32_t>();
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break;
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case FlagsClr:
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flags = 0;
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break;
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default:
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warn("Tried to write RVIO at offset %#x that doesn't exist\n",
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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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SERIALIZE_SCALAR(flags);
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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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UNSERIALIZE_SCALAR(flags);
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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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