system.cc revision 2665
1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Ben Nash 29 */ 30 31/** 32 * @file 33 * Modifications for the FreeBSD kernel. 34 * Based on kern/linux/linux_system.cc. 35 * 36 */ 37 38#include "arch/alpha/system.hh" 39#include "arch/alpha/freebsd/system.hh" 40#include "base/loader/symtab.hh" 41#include "cpu/exec_context.hh" 42#include "mem/physical.hh" 43#include "mem/port.hh" 44#include "arch/isa_traits.hh" 45#include "sim/builder.hh" 46#include "sim/byteswap.hh" 47#include "arch/vtophys.hh" 48 49#define TIMER_FREQUENCY 1193180 50 51using namespace std; 52using namespace AlphaISA; 53 54FreebsdAlphaSystem::FreebsdAlphaSystem(Params *p) 55 : AlphaSystem(p) 56{ 57 /** 58 * Any time DELAY is called just skip the function. 59 * Shouldn't we actually emulate the delay? 60 */ 61 skipDelayEvent = addKernelFuncEvent<SkipFuncEvent>("DELAY"); 62 skipCalibrateClocks = 63 addKernelFuncEvent<SkipCalibrateClocksEvent>("calibrate_clocks"); 64} 65 66 67FreebsdAlphaSystem::~FreebsdAlphaSystem() 68{ 69 delete skipDelayEvent; 70 delete skipCalibrateClocks; 71} 72 73 74void 75FreebsdAlphaSystem::doCalibrateClocks(ExecContext *xc) 76{ 77 Addr ppc_vaddr = 0; 78 Addr timer_vaddr = 0; 79 80 ppc_vaddr = (Addr)xc->readIntReg(ArgumentReg1); 81 timer_vaddr = (Addr)xc->readIntReg(ArgumentReg2); 82 83 virtPort.write(ppc_vaddr, (uint32_t)Clock::Frequency); 84 virtPort.write(timer_vaddr, (uint32_t)TIMER_FREQUENCY); 85} 86 87 88void 89FreebsdAlphaSystem::SkipCalibrateClocksEvent::process(ExecContext *xc) 90{ 91 SkipFuncEvent::process(xc); 92 ((FreebsdAlphaSystem *)xc->getSystemPtr())->doCalibrateClocks(xc); 93} 94 95 96BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) 97 98 Param<Tick> boot_cpu_frequency; 99 SimObjectParam<PhysicalMemory *> physmem; 100 101 Param<string> kernel; 102 Param<string> console; 103 Param<string> pal; 104 105 Param<string> boot_osflags; 106 Param<string> readfile; 107 Param<unsigned int> init_param; 108 109 Param<uint64_t> system_type; 110 Param<uint64_t> system_rev; 111 112 Param<bool> bin; 113 VectorParam<string> binned_fns; 114 Param<bool> bin_int; 115 116END_DECLARE_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) 117 118BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) 119 120 INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"), 121 INIT_PARAM(physmem, "phsyical memory"), 122 INIT_PARAM(kernel, "file that contains the kernel code"), 123 INIT_PARAM(console, "file that contains the console code"), 124 INIT_PARAM(pal, "file that contains palcode"), 125 INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", 126 "a"), 127 INIT_PARAM_DFLT(readfile, "file to read startup script from", ""), 128 INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), 129 INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34), 130 INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10), 131 INIT_PARAM_DFLT(bin, "is this system to be binned", false), 132 INIT_PARAM(binned_fns, "functions to be broken down and binned"), 133 INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true) 134 135END_INIT_SIM_OBJECT_PARAMS(FreebsdAlphaSystem) 136 137CREATE_SIM_OBJECT(FreebsdAlphaSystem) 138{ 139 AlphaSystem::Params *p = new AlphaSystem::Params; 140 p->name = getInstanceName(); 141 p->boot_cpu_frequency = boot_cpu_frequency; 142 p->physmem = physmem; 143 p->kernel_path = kernel; 144 p->console_path = console; 145 p->palcode = pal; 146 p->boot_osflags = boot_osflags; 147 p->init_param = init_param; 148 p->readfile = readfile; 149 p->system_type = system_type; 150 p->system_rev = system_rev; 151 p->bin = bin; 152 p->binned_fns = binned_fns; 153 p->bin_int = bin_int; 154 return new FreebsdAlphaSystem(p); 155} 156 157REGISTER_SIM_OBJECT("FreebsdAlphaSystem", FreebsdAlphaSystem) 158 159