+++ /dev/null
-# Copyright (c) 2007 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: Korey Sewell
-
-from m5.params import *
-from m5.proxy import *
-from Device import BasicPioDevice
-
-class MipsBackdoor(BasicPioDevice):
- type = 'MipsBackdoor'
- cpu = Param.BaseCPU(Parent.cpu[0], "Processor")
- disk = Param.SimpleDisk("Simple Disk")
- terminal = Param.Terminal(Parent.any, "The console terminal")
- system = Param.MipsSystem(Parent.any, "system object")
+++ /dev/null
-/*
- * 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
- * Ali Saidi
- * Steve Reinhardt
- * Erik Hallnor
- */
-
-/** @file
- * Mips Console Backdoor Definition
- */
-#include <cstddef>
-#include <string>
-
-#include "arch/mips/system.hh"
-#include "base/inifile.hh"
-#include "base/str.hh"
-#include "base/trace.hh"
-#include "cpu/base.hh"
-#include "cpu/thread_context.hh"
-#include "dev/mips/backdoor.hh"
-#include "dev/platform.hh"
-#include "dev/simple_disk.hh"
-#include "dev/terminal.hh"
-#include "mem/packet.hh"
-#include "mem/packet_access.hh"
-#include "mem/physical.hh"
-#include "params/MipsBackdoor.hh"
-#include "sim/sim_object.hh"
-
-
-using namespace std;
-using namespace MipsISA;
-
-MipsBackdoor::MipsBackdoor(const Params *p)
- : BasicPioDevice(p), disk(p->disk), terminal(p->terminal),
- system(p->system), cpu(p->cpu)
-{
-
- pioSize = sizeof(struct MipsAccess);
-
- mipsAccess = new Access();
- mipsAccess->last_offset = pioSize - 1;
-
- mipsAccess->version = MIPS_ACCESS_VERSION;
- mipsAccess->diskUnit = 1;
-
- mipsAccess->diskCount = 0;
- mipsAccess->diskPAddr = 0;
- mipsAccess->diskBlock = 0;
- mipsAccess->diskOperation = 0;
- mipsAccess->outputChar = 0;
- mipsAccess->inputChar = 0;
- bzero(mipsAccess->cpuStack, sizeof(mipsAccess->cpuStack));
-
-}
-
-void
-MipsBackdoor::startup()
-{
- system->setMipsAccess(pioAddr);
- mipsAccess->numCPUs = system->numContexts();
- mipsAccess->kernStart = MipsISA::Phys2K0Seg(system->getKernelStart());
- mipsAccess->kernEnd = MipsISA::Phys2K0Seg(system->getKernelEnd());
- mipsAccess->entryPoint = MipsISA::Phys2K0Seg(system->getKernelEntry());
- mipsAccess->mem_size = system->physmem->size();
- mipsAccess->cpuClock = cpu->frequency() / 1000000; // In MHz
- mipsAccess->intrClockFrequency = params()->platform->intrFrequency();
-}
-
-Tick
-MipsBackdoor::read(PacketPtr pkt)
-{
-
- /** XXX Do we want to push the addr munging to a bus brige or something? So
- * the device has it's physical address and then the bridge adds on whatever
- * machine dependent address swizzle is required?
- */
- assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
-
- Addr daddr = pkt->getAddr() - pioAddr;
-
- pkt->allocate();
-
- switch (pkt->getSize())
- {
- case sizeof(uint32_t):
- switch (daddr)
- {
- case offsetof(MipsAccess, last_offset):
- pkt->set(mipsAccess->last_offset);
- break;
- case offsetof(MipsAccess, version):
- pkt->set(mipsAccess->version);
- break;
- case offsetof(MipsAccess, numCPUs):
- pkt->set(mipsAccess->numCPUs);
- break;
- case offsetof(MipsAccess, intrClockFrequency):
- pkt->set(mipsAccess->intrClockFrequency);
- break;
- case offsetof(MipsAccess, inputChar):
- pkt->set(terminal->console_in());
- break;
- case offsetof(MipsAccess, cpuClock):
- pkt->set(mipsAccess->cpuClock);
- break;
- case offsetof(MipsAccess, mem_size):
- pkt->set(mipsAccess->mem_size);
- break;
- case offsetof(MipsAccess, kernStart):
- pkt->set(mipsAccess->kernStart);
- break;
- case offsetof(MipsAccess, kernEnd):
- pkt->set(mipsAccess->kernEnd);
- break;
- case offsetof(MipsAccess, entryPoint):
- pkt->set(mipsAccess->entryPoint);
- break;
- case offsetof(MipsAccess, diskUnit):
- pkt->set(mipsAccess->diskUnit);
- break;
- case offsetof(MipsAccess, diskCount):
- pkt->set(mipsAccess->diskCount);
- break;
- case offsetof(MipsAccess, diskPAddr):
- pkt->set(mipsAccess->diskPAddr);
- break;
- case offsetof(MipsAccess, diskBlock):
- pkt->set(mipsAccess->diskBlock);
- break;
- case offsetof(MipsAccess, diskOperation):
- pkt->set(mipsAccess->diskOperation);
- break;
- case offsetof(MipsAccess, outputChar):
- pkt->set(mipsAccess->outputChar);
- break;
- default:
- int cpunum = (daddr - offsetof(MipsAccess, cpuStack)) /
- sizeof(mipsAccess->cpuStack[0]);
-
- if (cpunum >= 0 && cpunum < 64)
- pkt->set(mipsAccess->cpuStack[cpunum]);
- else
- panic("Unknown 32bit access, %#x\n", daddr);
- }
- //DPRINTF(MipsBackdoor, "read: offset=%#x val=%#x\n", daddr,
- // pkt->get<uint64_t>());
- break;
- default:
- pkt->setBadAddress();
- }
-
- pkt->makeAtomicResponse();
- return pioDelay;
-}
-
-Tick
-MipsBackdoor::write(PacketPtr pkt)
-{
- assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
- Addr daddr = pkt->getAddr() - pioAddr;
-
- uint32_t val = pkt->get<uint32_t>();
- assert(pkt->getSize() == sizeof(uint32_t));
- switch (daddr) {
- case offsetof(MipsAccess, diskUnit):
- mipsAccess->diskUnit = val;
- break;
-
- case offsetof(MipsAccess, diskCount):
- mipsAccess->diskCount = val;
- break;
-
- case offsetof(MipsAccess, diskPAddr):
- mipsAccess->diskPAddr = val;
- break;
-
- case offsetof(MipsAccess, diskBlock):
- mipsAccess->diskBlock = val;
- break;
-
- case offsetof(MipsAccess, diskOperation):
- if (val == 0x13)
- disk->read(mipsAccess->diskPAddr, mipsAccess->diskBlock,
- mipsAccess->diskCount);
- else
- panic("Invalid disk operation!");
-
- break;
-
- case offsetof(MipsAccess, outputChar):
- terminal->out((char)(val & 0xff));
- break;
-
- default:
- int cpunum = (daddr - offsetof(MipsAccess, cpuStack)) /
- sizeof(mipsAccess->cpuStack[0]);
- warn("%d: Trying to launch CPU number %d!", curTick, cpunum);
- assert(val > 0 && "Must not access primary cpu");
- if (cpunum >= 0 && cpunum < 64)
- mipsAccess->cpuStack[cpunum] = val;
- else
- panic("Unknown 32bit access, %#x\n", daddr);
- }
-
- pkt->makeAtomicResponse();
-
- return pioDelay;
-}
-
-void
-MipsBackdoor::Access::serialize(ostream &os)
-{
- SERIALIZE_SCALAR(last_offset);
- SERIALIZE_SCALAR(version);
- SERIALIZE_SCALAR(numCPUs);
- SERIALIZE_SCALAR(mem_size);
- SERIALIZE_SCALAR(cpuClock);
- SERIALIZE_SCALAR(intrClockFrequency);
- SERIALIZE_SCALAR(kernStart);
- SERIALIZE_SCALAR(kernEnd);
- SERIALIZE_SCALAR(entryPoint);
- SERIALIZE_SCALAR(diskUnit);
- SERIALIZE_SCALAR(diskCount);
- SERIALIZE_SCALAR(diskPAddr);
- SERIALIZE_SCALAR(diskBlock);
- SERIALIZE_SCALAR(diskOperation);
- SERIALIZE_SCALAR(outputChar);
- SERIALIZE_SCALAR(inputChar);
- SERIALIZE_ARRAY(cpuStack,64);
-}
-
-void
-MipsBackdoor::Access::unserialize(Checkpoint *cp, const std::string §ion)
-{
- UNSERIALIZE_SCALAR(last_offset);
- UNSERIALIZE_SCALAR(version);
- UNSERIALIZE_SCALAR(numCPUs);
- UNSERIALIZE_SCALAR(mem_size);
- UNSERIALIZE_SCALAR(cpuClock);
- UNSERIALIZE_SCALAR(intrClockFrequency);
- UNSERIALIZE_SCALAR(kernStart);
- UNSERIALIZE_SCALAR(kernEnd);
- UNSERIALIZE_SCALAR(entryPoint);
- UNSERIALIZE_SCALAR(diskUnit);
- UNSERIALIZE_SCALAR(diskCount);
- UNSERIALIZE_SCALAR(diskPAddr);
- UNSERIALIZE_SCALAR(diskBlock);
- UNSERIALIZE_SCALAR(diskOperation);
- UNSERIALIZE_SCALAR(outputChar);
- UNSERIALIZE_SCALAR(inputChar);
- UNSERIALIZE_ARRAY(cpuStack, 64);
-}
-
-void
-MipsBackdoor::serialize(ostream &os)
-{
- mipsAccess->serialize(os);
-}
-
-void
-MipsBackdoor::unserialize(Checkpoint *cp, const std::string §ion)
-{
- mipsAccess->unserialize(cp, section);
-}
-
-MipsBackdoor *
-MipsBackdoorParams::create()
-{
- return new MipsBackdoor(this);
-}
+++ /dev/null
-/*
- * 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__
projects / gem5.git / commitdiff