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; --- 35 unchanged lines hidden (view full) --- 44#include "arch/alpha/linux/threadinfo.hh" 45#include "arch/alpha/idle_event.hh" 46#include "arch/alpha/system.hh" 47#include "arch/vtophys.hh" 48#include "base/loader/symtab.hh" 49#include "cpu/base.hh" 50#include "cpu/thread_context.hh" 51#include "debug/Thread.hh" |
52#include "kern/linux/events.hh" 53#include "kern/linux/printk.hh" 54#include "mem/physical.hh" 55#include "mem/port.hh" 56#include "sim/arguments.hh" 57#include "sim/byteswap.hh" 58 59using namespace std; 60using namespace AlphaISA; 61using namespace Linux; 62 63LinuxAlphaSystem::LinuxAlphaSystem(Params *p) 64 : AlphaSystem(p) 65{ |
66 Addr addr = 0; 67 68 /** 69 * The symbol swapper_pg_dir marks the beginning of the kernel and 70 * the location of bootloader passed arguments 71 */ 72 if (!kernelSymtab->findAddress("swapper_pg_dir", KernelStart)) { 73 panic("Could not determine start location of kernel"); 74 } 75 76 /** 77 * Since we aren't using a bootloader, we have to copy the 78 * kernel arguments directly into the kernel's memory. 79 */ |
80 virtPort->writeBlob(CommandLine(), (uint8_t*)params()->boot_osflags.c_str(), 81 params()->boot_osflags.length()+1); |
82 83 /** 84 * find the address of the est_cycle_freq variable and insert it 85 * so we don't through the lengthly process of trying to 86 * calculated it by using the PIT, RTC, etc. 87 */ 88 if (kernelSymtab->findAddress("est_cycle_freq", addr)) |
89 virtPort->write(addr, (uint64_t)(SimClock::Frequency / 90 p->boot_cpu_frequency)); |
91 92 93 /** 94 * EV5 only supports 127 ASNs so we are going to tell the kernel that the 95 * paritiuclar EV6 we have only supports 127 asns. 96 * @todo At some point we should change ev5.hh and the palcode to support 97 * 255 ASNs. 98 */ 99 if (kernelSymtab->findAddress("dp264_mv", addr)) |
100 virtPort->write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127)); |
101 else 102 panic("could not find dp264_mv\n"); 103 104#ifndef NDEBUG 105 kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic"); 106 if (!kernelPanicEvent) 107 panic("could not find kernel symbol \'panic\'"); 108 --- 49 unchanged lines hidden (view full) --- 158} 159 160void 161LinuxAlphaSystem::setDelayLoop(ThreadContext *tc) 162{ 163 Addr addr = 0; 164 if (kernelSymtab->findAddress("loops_per_jiffy", addr)) { 165 Tick cpuFreq = tc->getCpuPtr()->frequency(); |
166 assert(intrFreq); 167 VirtualPort *vp; |
168 |
169 vp = tc->getVirtPort(); |
170 vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988)); 171 } 172} 173 174void 175LinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc) 176{ 177 SkipFuncEvent::process(tc); --- 18 unchanged lines hidden --- |