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Diffstat (limited to 'src/dev/mips/backdoor.hh')
-rwxr-xr-x | src/dev/mips/backdoor.hh | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/src/dev/mips/backdoor.hh b/src/dev/mips/backdoor.hh deleted file mode 100755 index 70b02c8ed..000000000 --- a/src/dev/mips/backdoor.hh +++ /dev/null @@ -1,126 +0,0 @@ -/* - * Copyright (c) 2001-2005 The Regents of The University of Michigan - * All rights reserved. - * - * 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: Nathan Binkert - */ - -/** @file - * System Console Backdoor Interface - */ - -#ifndef __DEV_MIPS_BACKDOOR_HH__ -#define __DEV_MIPS_BACKDOOR_HH__ - -#include "base/range.hh" -#include "base/types.hh" -#include "dev/io_device.hh" -#include "dev/mips/access.h" -#include "params/MipsBackdoor.hh" -#include "sim/sim_object.hh" - -class BaseCPU; -class Terminal; -class MipsSystem; -class SimpleDisk; - -/** - * Memory mapped interface to the system console. This device - * represents a shared data region between the OS Kernel and the - * System Console Backdoor. - * - * The system console is a small standalone program that is initially - * run when the system boots. It contains the necessary code to - * access the boot disk, to read/write from the console, and to pass - * boot parameters to the kernel. - * - * This version of the system console is very different from the one - * that would be found in a real system. Many of the functions use - * some sort of backdoor to get their job done. For example, reading - * from the boot device on a real system would require a minimal - * device driver to access the disk controller, but since we have a - * simulator here, we are able to bypass the disk controller and - * access the disk image directly. There are also some things like - * reading the kernel off the disk image into memory that are normally - * taken care of by the console that are now taken care of by the - * simulator. - * - * These shortcuts are acceptable since the system console is - * primarily used doing boot before the kernel has loaded its device - * drivers. - */ -class MipsBackdoor : public BasicPioDevice -{ - protected: - struct Access : public MipsAccess - { - void serialize(std::ostream &os); - void unserialize(Checkpoint *cp, const std::string §ion); - }; - - union { - Access *mipsAccess; - uint8_t *consoleData; - }; - - /** the disk must be accessed from the console */ - SimpleDisk *disk; - - /** the system terminal is accessable from the console */ - Terminal *terminal; - - /** a pointer to the system we are running in */ - MipsSystem *system; - - /** a pointer to the CPU boot cpu */ - BaseCPU *cpu; - - public: - typedef MipsBackdoorParams Params; - MipsBackdoor(const Params *p); - - const Params * - params() const - { - return dynamic_cast<const Params *>(_params); - } - - virtual void startup(); - - /** - * memory mapped reads and writes - */ - virtual Tick read(PacketPtr pkt); - virtual Tick write(PacketPtr pkt); - - /** - * standard serialization routines for checkpointing - */ - virtual void serialize(std::ostream &os); - virtual void unserialize(Checkpoint *cp, const std::string §ion); -}; - -#endif // __DEV_MIPS_BACKDOOR_HH__ |