system.cc revision 1885
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 "targetarch/vtophys.hh" 43 44#define TIMER_FREQUENCY 1193180 45 46using namespace std; 47 48FreebsdSystem::FreebsdSystem(Params *p) 49 : System(p) 50{ 51 /** 52 * Any time DELAY is called just skip the function. 53 * Shouldn't we actually emulate the delay? 54 */ 55 skipDelayEvent = addKernelFuncEvent<SkipFuncEvent>("DELAY"); 56 skipCalibrateClocks = 57 addKernelFuncEvent<SkipCalibrateClocksEvent>("calibrate_clocks"); 58} 59 60 61FreebsdSystem::~FreebsdSystem() 62{ 63 delete skipDelayEvent; 64 delete skipCalibrateClocks; 65} 66 67 68void 69FreebsdSystem::doCalibrateClocks(ExecContext *xc) 70{ 71 Addr ppc_vaddr = 0; 72 Addr timer_vaddr = 0; 73 Addr ppc_paddr = 0; 74 Addr timer_paddr = 0; 75 76 ppc_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg1]; 77 timer_vaddr = (Addr)xc->regs.intRegFile[ArgumentReg2]; 78 79 ppc_paddr = vtophys(physmem, ppc_vaddr); 80 timer_paddr = vtophys(physmem, timer_vaddr); 81 82 uint8_t *ppc = physmem->dma_addr(ppc_paddr, sizeof(uint32_t)); 83 uint8_t *timer = physmem->dma_addr(timer_paddr, sizeof(uint32_t)); 84 85 *(uint32_t *)ppc = htog((uint32_t)Clock::Frequency); 86 *(uint32_t *)timer = htog((uint32_t)TIMER_FREQUENCY); 87} 88 89 90void 91FreebsdSystem::SkipCalibrateClocksEvent::process(ExecContext *xc) 92{ 93 SkipFuncEvent::process(xc); 94 ((FreebsdSystem *)xc->system)->doCalibrateClocks(xc); 95} 96 97 98BEGIN_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem) 99 100 Param<Tick> boot_cpu_frequency; 101 SimObjectParam<MemoryController *> memctrl; 102 SimObjectParam<PhysicalMemory *> physmem; 103 104 Param<string> kernel; 105 Param<string> console; 106 Param<string> pal; 107 108 Param<string> boot_osflags; 109 Param<string> readfile; 110 Param<unsigned int> init_param; 111 112 Param<uint64_t> system_type; 113 Param<uint64_t> system_rev; 114 115 Param<bool> bin; 116 VectorParam<string> binned_fns; 117 Param<bool> bin_int; 118 119END_DECLARE_SIM_OBJECT_PARAMS(FreebsdSystem) 120 121BEGIN_INIT_SIM_OBJECT_PARAMS(FreebsdSystem) 122 123 INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"), 124 INIT_PARAM(memctrl, "memory controller"), 125 INIT_PARAM(physmem, "phsyical memory"), 126 INIT_PARAM(kernel, "file that contains the kernel code"), 127 INIT_PARAM(console, "file that contains the console code"), 128 INIT_PARAM(pal, "file that contains palcode"), 129 INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot", 130 "a"), 131 INIT_PARAM_DFLT(readfile, "file to read startup script from", ""), 132 INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0), 133 INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34), 134 INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10), 135 INIT_PARAM_DFLT(bin, "is this system to be binned", false), 136 INIT_PARAM(binned_fns, "functions to be broken down and binned"), 137 INIT_PARAM_DFLT(bin_int, "is interrupt code binned seperately?", true) 138 139END_INIT_SIM_OBJECT_PARAMS(FreebsdSystem) 140 141CREATE_SIM_OBJECT(FreebsdSystem) 142{ 143 System::Params *p = new System::Params; 144 p->name = getInstanceName(); 145 p->boot_cpu_frequency = boot_cpu_frequency; 146 p->memctrl = memctrl; 147 p->physmem = physmem; 148 p->kernel_path = kernel; 149 p->console_path = console; 150 p->palcode = pal; 151 p->boot_osflags = boot_osflags; 152 p->init_param = init_param; 153 p->readfile = readfile; 154 p->system_type = system_type; 155 p->system_rev = system_rev; 156 p->bin = bin; 157 p->binned_fns = binned_fns; 158 p->bin_int = bin_int; 159 return new FreebsdSystem(p); 160} 161 162REGISTER_SIM_OBJECT("FreebsdSystem", FreebsdSystem) 163 164