system.cc revision 2036
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 "sim/byteswap.hh" 43#include "targetarch/vtophys.hh" 44 45#define TIMER_FREQUENCY 1193180 46 47using namespace std; 48 49FreebsdSystem::FreebsdSystem(Params *p) 50 : System(p) 51{ 52 /** 53 * Any time DELAY is called just skip the function. 54 * Shouldn't we actually emulate the delay? 55 */ 56 skipDelayEvent = addKernelFuncEvent<SkipFuncEvent>("DELAY"); 57 skipCalibrateClocks = 58 addKernelFuncEvent<SkipCalibrateClocksEvent>("calibrate_clocks"); 59} 60 61 62FreebsdSystem::~FreebsdSystem() 63{ 64 delete skipDelayEvent; 65 delete skipCalibrateClocks; 66} 67 68 69void 70FreebsdSystem::doCalibrateClocks(ExecContext *xc) 71{ 72 Addr ppc_vaddr = 0; 73 Addr timer_vaddr = 0; 74 Addr ppc_paddr = 0; 75 Addr timer_paddr = 0; 76 77 ppc_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg1]; 78 timer_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg2]; 79 80 ppc_paddr = vtophys(physmem, ppc_vaddr); 81 timer_paddr = vtophys(physmem, timer_vaddr); 82 83 uint8_t *ppc = physmem->dma_addr(ppc_paddr, sizeof(uint32_t)); 84 uint8_t *timer = physmem->dma_addr(timer_paddr, sizeof(uint32_t)); 85 86 *(uint32_t *)ppc = LittleEndianGuest::htog((uint32_t)Clock::Frequency); 87 *(uint32_t *)timer = LittleEndianGuest::htog((uint32_t)TIMER_FREQUENCY); 88} 89 90 91void 92FreebsdSystem::SkipCalibrateClocksEvent::process(ExecContext *xc) 93{ 94 SkipFuncEvent::process(xc); 95 ((FreebsdSystem *)xc->system)->doCalibrateClocks(xc); 96} 97 98 99BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem) 100 101 Param<Tick> boot_cpu_frequency; 102 SimObjectParam<MemoryController *> memctrl; 103 SimObjectParam<PhysicalMemory *> physmem; 104 105 Param<string> kernel; 106 Param<string> console; 107 Param<string> pal; 108 109 Param<string> boot_osflags; 110 Param<string> readfile; 111 Param<unsigned int> init_param; 112 113 Param<uint64_t> system_type; 114 Param<uint64_t> system_rev; 115 116 Param<bool> bin; 117 VectorParam<string> binned_fns; 118 Param<bool> bin_int; 119 120END_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem) 121 122BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdSystem) 123 124 INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"), 125 INIT_PARAM(memctrl, "memory controller"), 126 INIT_PARAM(physmem, "phsyical memory"), 127 INIT_PARAM(kernel, "file that contains the kernel code"), 128 INIT_PARAM(console, "file that contains the console code"), 129 INIT_PARAM(pal, "file that contains palcode"), 130 INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", 131 "a"), 132 INIT_PARAM_DFLT(readfile, "file to read startup script from", ""), 133 INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), 134 INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34), 135 INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10), 136 INIT_PARAM_DFLT(bin, "is this system to be binned", false), 137 INIT_PARAM(binned_fns, "functions to be broken down and binned"), 138 INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true) 139 140END_INIT_SIM_OBJECT_PARAMS(FreebsdSystem) 141 142CREATE_SIM_OBJECT(FreebsdSystem) 143{ 144 System::Params *p = new System::Params; 145 p->name = getInstanceName(); 146 p->boot_cpu_frequency = boot_cpu_frequency; 147 p->memctrl = memctrl; 148 p->physmem = physmem; 149 p->kernel_path = kernel; 150 p->console_path = console; 151 p->palcode = pal; 152 p->boot_osflags = boot_osflags; 153 p->init_param = init_param; 154 p->readfile = readfile; 155 p->system_type = system_type; 156 p->system_rev = system_rev; 157 p->bin = bin; 158 p->binned_fns = binned_fns; 159 p->bin_int = bin_int; 160 return new FreebsdSystem(p); 161} 162 163REGISTER_SIM_OBJECT("FreebsdSystem", FreebsdSystem) 164 165