system.cc revision 2170
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 29/** 30 * @file 31 * Modifications for the FreeBSD kernel. 32 * Based on kern/linux/linux_system.cc. 33 * 34 */ 35 36#include "base/loader/symtab.hh" 37#include "cpu/exec_context.hh" 38#include "kern/freebsd/freebsd_system.hh" 39#include "mem/functional/memory_control.hh" 40#include "mem/functional/physical.hh" 41#include "sim/builder.hh" 42#include "arch/isa_traits.hh" 43#include "sim/byteswap.hh" 44#include "arch/vtophys.hh" 45 46#define TIMER_FREQUENCY 1193180 47 48using namespace std; 49using namespace TheISA; 50 51FreebsdSystem::FreebsdSystem(Params *p) 52 : System(p) 53{ 54 /** 55 * Any time DELAY is called just skip the function. 56 * Shouldn't we actually emulate the delay? 57 */ 58 skipDelayEvent = addKernelFuncEvent<SkipFuncEvent>("DELAY"); 59 skipCalibrateClocks = 60 addKernelFuncEvent<SkipCalibrateClocksEvent>("calibrate_clocks"); 61} 62 63 64FreebsdSystem::~FreebsdSystem() 65{ 66 delete skipDelayEvent; 67 delete skipCalibrateClocks; 68} 69 70 71void 72FreebsdSystem::doCalibrateClocks(ExecContext *xc) 73{ 74 Addr ppc_vaddr = 0; 75 Addr timer_vaddr = 0; 76 Addr ppc_paddr = 0; 77 Addr timer_paddr = 0; 78 79 ppc_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg1]; 80 timer_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg2]; 81 82 ppc_paddr = vtophys(physmem, ppc_vaddr); 83 timer_paddr = vtophys(physmem, timer_vaddr); 84 85 uint8_t *ppc = physmem->dma_addr(ppc_paddr, sizeof(uint32_t)); 86 uint8_t *timer = physmem->dma_addr(timer_paddr, sizeof(uint32_t)); 87 88 *(uint32_t *)ppc = htog((uint32_t)Clock::Frequency); 89 *(uint32_t *)timer = htog((uint32_t)TIMER_FREQUENCY); 90} 91 92 93void 94FreebsdSystem::SkipCalibrateClocksEvent::process(ExecContext *xc) 95{ 96 SkipFuncEvent::process(xc); 97 ((FreebsdSystem *)xc->system)->doCalibrateClocks(xc); 98} 99 100 101BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem) 102 103 Param<Tick> boot_cpu_frequency; 104 SimObjectParam<MemoryController *> memctrl; 105 SimObjectParam<PhysicalMemory *> physmem; 106 107 Param<string> kernel; 108 Param<string> console; 109 Param<string> pal; 110 111 Param<string> boot_osflags; 112 Param<string> readfile; 113 Param<unsigned int> init_param; 114 115 Param<uint64_t> system_type; 116 Param<uint64_t> system_rev; 117 118 Param<bool> bin; 119 VectorParam<string> binned_fns; 120 Param<bool> bin_int; 121 122END_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem) 123 124BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdSystem) 125 126 INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"), 127 INIT_PARAM(memctrl, "memory controller"), 128 INIT_PARAM(physmem, "phsyical memory"), 129 INIT_PARAM(kernel, "file that contains the kernel code"), 130 INIT_PARAM(console, "file that contains the console code"), 131 INIT_PARAM(pal, "file that contains palcode"), 132 INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", 133 "a"), 134 INIT_PARAM_DFLT(readfile, "file to read startup script from", ""), 135 INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), 136 INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34), 137 INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10), 138 INIT_PARAM_DFLT(bin, "is this system to be binned", false), 139 INIT_PARAM(binned_fns, "functions to be broken down and binned"), 140 INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true) 141 142END_INIT_SIM_OBJECT_PARAMS(FreebsdSystem) 143 144CREATE_SIM_OBJECT(FreebsdSystem) 145{ 146 System::Params *p = new System::Params; 147 p->name = getInstanceName(); 148 p->boot_cpu_frequency = boot_cpu_frequency; 149 p->memctrl = memctrl; 150 p->physmem = physmem; 151 p->kernel_path = kernel; 152 p->console_path = console; 153 p->palcode = pal; 154 p->boot_osflags = boot_osflags; 155 p->init_param = init_param; 156 p->readfile = readfile; 157 p->system_type = system_type; 158 p->system_rev = system_rev; 159 p->bin = bin; 160 p->binned_fns = binned_fns; 161 p->bin_int = bin_int; 162 return new FreebsdSystem(p); 163} 164 165REGISTER_SIM_OBJECT("FreebsdSystem", FreebsdSystem) 166 167