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 "dev/platform.hh"
53#include "kern/linux/events.hh"
54#include "kern/linux/printk.hh"
55#include "mem/physical.hh"
56#include "mem/port.hh"
57#include "sim/arguments.hh"
58#include "sim/byteswap.hh"
59
60using namespace std;
61using namespace AlphaISA;
62using namespace Linux;
63
64LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
65 : AlphaSystem(p)
66{
67}
68
69void
70LinuxAlphaSystem::initState()
71{
72 // Moved from the constructor to here since it relies on the
73 // address map being resolved in the interconnect
74
75 // Call the initialisation of the super class
76 AlphaSystem::initState();
77
78 Addr addr = 0;
79
80 /**
81 * The symbol swapper_pg_dir marks the beginning of the kernel and
82 * the location of bootloader passed arguments
83 */
84 if (!kernelSymtab->findAddress("swapper_pg_dir", KernelStart)) {
85 panic("Could not determine start location of kernel");
86 }
87
88 /**
89 * Since we aren't using a bootloader, we have to copy the
90 * kernel arguments directly into the kernel's memory.
91 */
92 virtProxy->writeBlob(CommandLine(),
93 (uint8_t*)params()->boot_osflags.c_str(),
94 params()->boot_osflags.length()+1);
95
96 /**
97 * find the address of the est_cycle_freq variable and insert it
98 * so we don't through the lengthly process of trying to
99 * calculated it by using the PIT, RTC, etc.
100 */
101 if (kernelSymtab->findAddress("est_cycle_freq", addr))
102 virtProxy->write(addr, (uint64_t)(SimClock::Frequency /
103 params()->boot_cpu_frequency));
104
105
106 /**
107 * EV5 only supports 127 ASNs so we are going to tell the kernel that the
108 * paritiuclar EV6 we have only supports 127 asns.
109 * @todo At some point we should change ev5.hh and the palcode to support
110 * 255 ASNs.
111 */
112 if (kernelSymtab->findAddress("dp264_mv", addr))
113 virtProxy->write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127));
114 else
115 panic("could not find dp264_mv\n");
116
117#ifndef NDEBUG
118 kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic");
119 if (!kernelPanicEvent)
120 panic("could not find kernel symbol \'panic\'");
121

--- 49 unchanged lines hidden (view full) ---

171}
172
173void
174LinuxAlphaSystem::setDelayLoop(ThreadContext *tc)
175{
176 Addr addr = 0;
177 if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
178 Tick cpuFreq = tc->getCpuPtr()->frequency();
179 Tick intrFreq = platform->intrFrequency();
180 FSTranslatingPortProxy* vp;
181
182 vp = tc->getVirtProxy();
183 vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988));
184 }
185}
186
187void
188LinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc)
189{
190 SkipFuncEvent::process(tc);

--- 18 unchanged lines hidden ---