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 * Authors: Ali Saidi
29 * Lisa Hsu
30 * Nathan Binkert
31 * Steve Reinhardt
32 */
33
34/**
35 * @file
36 * This code loads the linux kernel, console, pal and patches certain
37 * functions. The symbol tables are loaded so that traces can show
38 * the executing function and we can skip functions. Various delay
39 * loops are skipped and their final values manually computed to speed
40 * up boot time.
41 */
42
43#include "arch/arguments.hh"
44#include "arch/vtophys.hh"
45#include "arch/alpha/idle_event.hh"
46#include "arch/alpha/linux/system.hh"
47#include "arch/alpha/linux/threadinfo.hh"
48#include "arch/alpha/system.hh"
49#include "base/loader/symtab.hh"
50#include "cpu/thread_context.hh"
51#include "cpu/base.hh"
52#include "dev/platform.hh"
53#include "kern/linux/printk.hh"
54#include "kern/linux/events.hh"
55#include "mem/physical.hh"
56#include "mem/port.hh"
| 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 * Authors: Ali Saidi
29 * Lisa Hsu
30 * Nathan Binkert
31 * Steve Reinhardt
32 */
33
34/**
35 * @file
36 * This code loads the linux kernel, console, pal and patches certain
37 * functions. The symbol tables are loaded so that traces can show
38 * the executing function and we can skip functions. Various delay
39 * loops are skipped and their final values manually computed to speed
40 * up boot time.
41 */
42
43#include "arch/arguments.hh"
44#include "arch/vtophys.hh"
45#include "arch/alpha/idle_event.hh"
46#include "arch/alpha/linux/system.hh"
47#include "arch/alpha/linux/threadinfo.hh"
48#include "arch/alpha/system.hh"
49#include "base/loader/symtab.hh"
50#include "cpu/thread_context.hh"
51#include "cpu/base.hh"
52#include "dev/platform.hh"
53#include "kern/linux/printk.hh"
54#include "kern/linux/events.hh"
55#include "mem/physical.hh"
56#include "mem/port.hh"
|
57#include "sim/builder.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 Addr addr = 0;
68
69 /**
70 * The symbol swapper_pg_dir marks the beginning of the kernel and
71 * the location of bootloader passed arguments
72 */
73 if (!kernelSymtab->findAddress("swapper_pg_dir", KernelStart)) {
74 panic("Could not determine start location of kernel");
75 }
76
77 /**
78 * Since we aren't using a bootloader, we have to copy the
79 * kernel arguments directly into the kernel's memory.
80 */
81 virtPort.writeBlob(CommandLine(), (uint8_t*)params()->boot_osflags.c_str(),
82 params()->boot_osflags.length()+1);
83
84 /**
85 * find the address of the est_cycle_freq variable and insert it
86 * so we don't through the lengthly process of trying to
87 * calculated it by using the PIT, RTC, etc.
88 */
89 if (kernelSymtab->findAddress("est_cycle_freq", addr))
90 virtPort.write(addr, (uint64_t)(Clock::Frequency /
91 p->boot_cpu_frequency));
92
93
94 /**
95 * EV5 only supports 127 ASNs so we are going to tell the kernel that the
96 * paritiuclar EV6 we have only supports 127 asns.
97 * @todo At some point we should change ev5.hh and the palcode to support
98 * 255 ASNs.
99 */
100 if (kernelSymtab->findAddress("dp264_mv", addr))
101 virtPort.write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127));
102 else
103 panic("could not find dp264_mv\n");
104
105#ifndef NDEBUG
106 kernelPanicEvent = addKernelFuncEvent<BreakPCEvent>("panic");
107 if (!kernelPanicEvent)
108 panic("could not find kernel symbol \'panic\'");
109
110#if 0
111 kernelDieEvent = addKernelFuncEvent<BreakPCEvent>("die_if_kernel");
112 if (!kernelDieEvent)
113 panic("could not find kernel symbol \'die_if_kernel\'");
114#endif
115
116#endif
117
118 /**
119 * Any time ide_delay_50ms, calibarte_delay or
120 * determine_cpu_caches is called just skip the
121 * function. Currently determine_cpu_caches only is used put
122 * information in proc, however if that changes in the future we
123 * will have to fill in the cache size variables appropriately.
124 */
125
126 skipIdeDelay50msEvent =
127 addKernelFuncEvent<SkipFuncEvent>("ide_delay_50ms");
128 skipDelayLoopEvent =
129 addKernelFuncEvent<SkipDelayLoopEvent>("calibrate_delay");
130 skipCacheProbeEvent =
131 addKernelFuncEvent<SkipFuncEvent>("determine_cpu_caches");
132 debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
133 idleStartEvent = addKernelFuncEvent<IdleStartEvent>("cpu_idle");
134
135 // Disable for now as it runs into panic() calls in VPTr methods
136 // (see sim/vptr.hh). Once those bugs are fixed, we can
137 // re-enable, but we should find a better way to turn it on than
138 // using DTRACE(Thread), since looking at a trace flag at tick 0
139 // leads to non-intuitive behavior with --trace-start.
140 if (false && kernelSymtab->findAddress("alpha_switch_to", addr)) {
141 printThreadEvent = new PrintThreadInfo(&pcEventQueue, "threadinfo",
142 addr + sizeof(MachInst) * 6);
143 } else {
144 printThreadEvent = NULL;
145 }
146}
147
148LinuxAlphaSystem::~LinuxAlphaSystem()
149{
150#ifndef NDEBUG
151 delete kernelPanicEvent;
152#endif
153 delete skipIdeDelay50msEvent;
154 delete skipDelayLoopEvent;
155 delete skipCacheProbeEvent;
156 delete debugPrintkEvent;
157 delete idleStartEvent;
158 delete printThreadEvent;
159}
160
161
162void
163LinuxAlphaSystem::setDelayLoop(ThreadContext *tc)
164{
165 Addr addr = 0;
166 if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
167 Tick cpuFreq = tc->getCpuPtr()->frequency();
168 Tick intrFreq = platform->intrFrequency();
169 VirtualPort *vp;
170
171 vp = tc->getVirtPort();
172 vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988));
173 tc->delVirtPort(vp);
174 }
175}
176
177
178void
179LinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc)
180{
181 SkipFuncEvent::process(tc);
182 // calculate and set loops_per_jiffy
183 ((LinuxAlphaSystem *)tc->getSystemPtr())->setDelayLoop(tc);
184}
185
186void
187LinuxAlphaSystem::PrintThreadInfo::process(ThreadContext *tc)
188{
189 Linux::ThreadInfo ti(tc);
190
191 DPRINTF(Thread, "Currently Executing Thread %s, pid %d, started at: %d\n",
192 ti.curTaskName(), ti.curTaskPID(), ti.curTaskStart());
193}
194
| 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)(Clock::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
109#if 0
110 kernelDieEvent = addKernelFuncEvent<BreakPCEvent>("die_if_kernel");
111 if (!kernelDieEvent)
112 panic("could not find kernel symbol \'die_if_kernel\'");
113#endif
114
115#endif
116
117 /**
118 * Any time ide_delay_50ms, calibarte_delay or
119 * determine_cpu_caches is called just skip the
120 * function. Currently determine_cpu_caches only is used put
121 * information in proc, however if that changes in the future we
122 * will have to fill in the cache size variables appropriately.
123 */
124
125 skipIdeDelay50msEvent =
126 addKernelFuncEvent<SkipFuncEvent>("ide_delay_50ms");
127 skipDelayLoopEvent =
128 addKernelFuncEvent<SkipDelayLoopEvent>("calibrate_delay");
129 skipCacheProbeEvent =
130 addKernelFuncEvent<SkipFuncEvent>("determine_cpu_caches");
131 debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
132 idleStartEvent = addKernelFuncEvent<IdleStartEvent>("cpu_idle");
133
134 // Disable for now as it runs into panic() calls in VPTr methods
135 // (see sim/vptr.hh). Once those bugs are fixed, we can
136 // re-enable, but we should find a better way to turn it on than
137 // using DTRACE(Thread), since looking at a trace flag at tick 0
138 // leads to non-intuitive behavior with --trace-start.
139 if (false && kernelSymtab->findAddress("alpha_switch_to", addr)) {
140 printThreadEvent = new PrintThreadInfo(&pcEventQueue, "threadinfo",
141 addr + sizeof(MachInst) * 6);
142 } else {
143 printThreadEvent = NULL;
144 }
145}
146
147LinuxAlphaSystem::~LinuxAlphaSystem()
148{
149#ifndef NDEBUG
150 delete kernelPanicEvent;
151#endif
152 delete skipIdeDelay50msEvent;
153 delete skipDelayLoopEvent;
154 delete skipCacheProbeEvent;
155 delete debugPrintkEvent;
156 delete idleStartEvent;
157 delete printThreadEvent;
158}
159
160
161void
162LinuxAlphaSystem::setDelayLoop(ThreadContext *tc)
163{
164 Addr addr = 0;
165 if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
166 Tick cpuFreq = tc->getCpuPtr()->frequency();
167 Tick intrFreq = platform->intrFrequency();
168 VirtualPort *vp;
169
170 vp = tc->getVirtPort();
171 vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988));
172 tc->delVirtPort(vp);
173 }
174}
175
176
177void
178LinuxAlphaSystem::SkipDelayLoopEvent::process(ThreadContext *tc)
179{
180 SkipFuncEvent::process(tc);
181 // calculate and set loops_per_jiffy
182 ((LinuxAlphaSystem *)tc->getSystemPtr())->setDelayLoop(tc);
183}
184
185void
186LinuxAlphaSystem::PrintThreadInfo::process(ThreadContext *tc)
187{
188 Linux::ThreadInfo ti(tc);
189
190 DPRINTF(Thread, "Currently Executing Thread %s, pid %d, started at: %d\n",
191 ti.curTaskName(), ti.curTaskPID(), ti.curTaskStart());
192}
193
|
195
196BEGIN_DECLARE_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
197
198 Param<Tick> boot_cpu_frequency;
199 SimObjectParam<PhysicalMemory *> physmem;
200 SimpleEnumParam<System::MemoryMode> mem_mode;
201
202 Param<string> kernel;
203 Param<string> console;
204 Param<string> pal;
205
206 Param<string> boot_osflags;
207 Param<string> readfile;
208 Param<string> symbolfile;
209 Param<unsigned int> init_param;
210
211 Param<uint64_t> system_type;
212 Param<uint64_t> system_rev;
213
214END_DECLARE_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
215
216BEGIN_INIT_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
217
218 INIT_PARAM(boot_cpu_frequency, "Frequency of the boot CPU"),
219 INIT_PARAM(physmem, "phsyical memory"),
220 INIT_ENUM_PARAM(mem_mode, "Memory Mode, (1=atomic, 2=timing)",
221 System::MemoryModeStrings),
222 INIT_PARAM(kernel, "file that contains the kernel code"),
223 INIT_PARAM(console, "file that contains the console code"),
224 INIT_PARAM(pal, "file that contains palcode"),
225 INIT_PARAM_DFLT(boot_osflags, "flags to pass to the kernel during boot",
226 "a"),
227 INIT_PARAM_DFLT(readfile, "file to read startup script from", ""),
228 INIT_PARAM_DFLT(symbolfile, "file to read symbols from", ""),
229 INIT_PARAM_DFLT(init_param, "numerical value to pass into simulator", 0),
230 INIT_PARAM_DFLT(system_type, "Type of system we are emulating", 34),
231 INIT_PARAM_DFLT(system_rev, "Revision of system we are emulating", 1<<10)
232
233END_INIT_SIM_OBJECT_PARAMS(LinuxAlphaSystem)
234
235CREATE_SIM_OBJECT(LinuxAlphaSystem)
| 194LinuxAlphaSystem *
195LinuxAlphaSystemParams::create()
|
236{
| 196{
|
237 AlphaSystem::Params *p = new AlphaSystem::Params;
238 p->name = getInstanceName();
239 p->boot_cpu_frequency = boot_cpu_frequency;
240 p->physmem = physmem;
241 p->mem_mode = mem_mode;
242 p->kernel_path = kernel;
243 p->console_path = console;
244 p->palcode = pal;
245 p->boot_osflags = boot_osflags;
246 p->init_param = init_param;
247 p->readfile = readfile;
248 p->symbolfile = symbolfile;
249 p->system_type = system_type;
250 p->system_rev = system_rev;
251 return new LinuxAlphaSystem(p);
| 197 return new LinuxAlphaSystem(this);
|
252}
| 198}
|
253
254REGISTER_SIM_OBJECT("LinuxAlphaSystem", LinuxAlphaSystem)
255
| |
| |