From 269259004943b80916ec9b6354f2fc00c811c88b Mon Sep 17 00:00:00 2001 From: Korey Sewell Date: Tue, 13 Nov 2007 16:58:16 -0500 Subject: Add in files from merge-bare-iron, get them compiling in FS and SE mode --HG-- extra : convert_revision : d4e19afda897bc3797868b40469ce2ec7ec7d251 --- src/dev/mips/console.hh | 126 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100755 src/dev/mips/console.hh (limited to 'src/dev/mips/console.hh') diff --git a/src/dev/mips/console.hh b/src/dev/mips/console.hh new file mode 100755 index 000000000..34792090d --- /dev/null +++ b/src/dev/mips/console.hh @@ -0,0 +1,126 @@ +/* + * 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 Interface + */ + +#ifndef __MIPS_CONSOLE_HH__ +#define __MIPS_CONSOLE_HH__ + +#include "base/range.hh" +#include "dev/mips/access.h" +#include "dev/io_device.hh" +#include "params/MipsConsole.hh" +#include "sim/host.hh" +#include "sim/sim_object.hh" + +class BaseCPU; +class SimConsole; +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. + * + * 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 MipsConsole : 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 console (the terminal) is accessable from the console */ + SimConsole *console; + + /** a pointer to the system we are running in */ + MipsSystem *system; + + /** a pointer to the CPU boot cpu */ + BaseCPU *cpu; + + public: + typedef MipsConsoleParams Params; + MipsConsole(const Params *p); + + const Params * + params() const + { + return dynamic_cast(_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 // __MIPS_CONSOLE_HH__ -- cgit v1.2.3