abc76f20cb
creation and initialization now happens in python. Parameter objects are generated and initialized by python. The .ini file is now solely for debugging purposes and is not used in construction of the objects in any way. --HG-- extra : convert_revision : 7e722873e417cb3d696f2e34c35ff488b7bff4ed
127 lines
4.2 KiB
C++
127 lines
4.2 KiB
C++
/*
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* Copyright (c) 2001-2005 The Regents of The University of Michigan
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* All rights reserved.
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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: Nathan Binkert
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*/
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/** @file
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* System Console Interface
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*/
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#ifndef __ALPHA_CONSOLE_HH__
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#define __ALPHA_CONSOLE_HH__
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#include "base/range.hh"
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#include "dev/alpha/access.h"
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#include "dev/io_device.hh"
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#include "params/AlphaConsole.hh"
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#include "sim/host.hh"
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#include "sim/sim_object.hh"
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class BaseCPU;
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class SimConsole;
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class AlphaSystem;
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class SimpleDisk;
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/**
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* Memory mapped interface to the system console. This device
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* represents a shared data region between the OS Kernel and the
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* System Console.
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*
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* The system console is a small standalone program that is initially
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* run when the system boots. It contains the necessary code to
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* access the boot disk, to read/write from the console, and to pass
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* boot parameters to the kernel.
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*
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* This version of the system console is very different from the one
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* that would be found in a real system. Many of the functions use
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* some sort of backdoor to get their job done. For example, reading
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* from the boot device on a real system would require a minimal
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* device driver to access the disk controller, but since we have a
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* simulator here, we are able to bypass the disk controller and
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* access the disk image directly. There are also some things like
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* reading the kernel off the disk image into memory that are normally
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* taken care of by the console that are now taken care of by the
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* simulator.
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*
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* These shortcuts are acceptable since the system console is
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* primarily used doing boot before the kernel has loaded its device
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* drivers.
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*/
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class AlphaConsole : public BasicPioDevice
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{
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protected:
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struct Access : public AlphaAccess
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{
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void serialize(std::ostream &os);
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void unserialize(Checkpoint *cp, const std::string §ion);
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};
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union {
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Access *alphaAccess;
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uint8_t *consoleData;
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};
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/** the disk must be accessed from the console */
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SimpleDisk *disk;
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/** the system console (the terminal) is accessable from the console */
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SimConsole *console;
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/** a pointer to the system we are running in */
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AlphaSystem *system;
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/** a pointer to the CPU boot cpu */
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BaseCPU *cpu;
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public:
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typedef AlphaConsoleParams Params;
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AlphaConsole(const Params *p);
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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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virtual void startup();
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/**
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* memory mapped reads and writes
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*/
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virtual Tick read(PacketPtr pkt);
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virtual Tick write(PacketPtr pkt);
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/**
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* standard serialization routines for checkpointing
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*/
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virtual void serialize(std::ostream &os);
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virtual void unserialize(Checkpoint *cp, const std::string §ion);
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};
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#endif // __ALPHA_CONSOLE_HH__
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