system.cc (8741:491297d019f3) system.cc (8799:dac1e33e07b0)
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;

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58
59using namespace std;
60using namespace AlphaISA;
61using namespace Linux;
62
63LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
64 : AlphaSystem(p)
65{
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;

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

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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);
113 else
114 panic("could not find dp264_mv\n");
115
116#ifndef NDEBUG
117 kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic");
118 if (!kernelPanicEvent)
119 panic("could not find kernel symbol \'panic\'");
120

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171
172void
173LinuxAlphaSystem::setDelayLoop(ThreadContext *tc)
174{
175 Addr addr = 0;
176 if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
177 Tick cpuFreq = tc->getCpuPtr()->frequency();
178 assert(intrFreq);
167 VirtualPort *vp;
179 FSTranslatingPortProxy* vp;
168
180
169 vp = tc->getVirtPort();
181 vp = tc->getVirtProxy();
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 --- 		182 vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988));
183 }
184}
185
186void
187LinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc)
188{
189 SkipFuncEvent::process(tc);

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