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