1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/*-
* Copyright (c) 1992 Terrence R. Lambert.
* Copyright (c) 1982, 1987, 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
* $Id: identcpu.c,v 1.8 1996/11/11 20:38:50 bde Exp $
*/
#include "opt_cpu.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysproto.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <machine/cpu.h>
#include <machine/reg.h>
#include <machine/psl.h>
#include <machine/clock.h>
#include <machine/specialreg.h>
#include <machine/sysarch.h>
#include <machine/md_var.h>
/* XXX - should be in header file */
void i486_bzero __P((void *buf, size_t len));
void identifycpu(void); /* XXX should be in different header file */
void earlysetcpuclass(void);
int cpu_class = CPUCLASS_386; /* least common denominator */
char machine[] = "i386";
SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
static char cpu_model[128];
SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, cpu_model, 0, "");
static struct cpu_nameclass i386_cpus[] = {
{ "Intel 80286", CPUCLASS_286 }, /* CPU_286 */
{ "i386SX", CPUCLASS_386 }, /* CPU_386SX */
{ "i386DX", CPUCLASS_386 }, /* CPU_386 */
{ "i486SX", CPUCLASS_486 }, /* CPU_486SX */
{ "i486DX", CPUCLASS_486 }, /* CPU_486 */
{ "Pentium", CPUCLASS_586 }, /* CPU_586 */
{ "Cy486DLC", CPUCLASS_486 }, /* CPU_486DLC */
{ "Pentium Pro", CPUCLASS_686 }, /* CPU_686 */
};
void
identifycpu(void)
{
cpu_class = i386_cpus[cpu].cpu_class;
printf("CPU: ");
strncpy(cpu_model, i386_cpus[cpu].cpu_name, sizeof cpu_model);
#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
if (!strcmp(cpu_vendor,"GenuineIntel")) {
if ((cpu_id & 0xf00) > 3) {
cpu_model[0] = '\0';
switch (cpu_id & 0x3000) {
case 0x1000:
strcpy(cpu_model, "Overdrive ");
break;
case 0x2000:
strcpy(cpu_model, "Dual ");
break;
}
switch (cpu_id & 0xf00) {
case 0x400:
strcat(cpu_model, "i486 ");
break;
case 0x500:
strcat(cpu_model, "Pentium"); /* nb no space */
break;
case 0x600:
strcat(cpu_model, "Pentium Pro");
break;
default:
strcat(cpu_model, "unknown");
break;
}
switch (cpu_id & 0xff0) {
case 0x400:
strcat(cpu_model, "DX"); break;
case 0x410:
strcat(cpu_model, "DX"); break;
case 0x420:
strcat(cpu_model, "SX"); break;
case 0x430:
strcat(cpu_model, "DX2"); break;
case 0x440:
strcat(cpu_model, "SL"); break;
case 0x450:
strcat(cpu_model, "SX2"); break;
case 0x470:
strcat(cpu_model, "DX2 Write-Back Enhanced");
break;
case 0x480:
strcat(cpu_model, "DX4"); break;
break;
}
}
} else if (!strcmp(cpu_vendor,"AuthenticAMD")) {
cpu_model[0] = '\0';
strcpy(cpu_model, "AMD ");
switch (cpu_id & 0xF0) {
case 0xE0:
strcat(cpu_model, "Am5x86 Write-Through");
break;
case 0xF0:
strcat(cpu_model, "Am5x86 Write-Back");
break;
default:
strcat(cpu_model, "Unknown");
break;
}
}
#endif
printf("%s (", cpu_model);
switch(cpu_class) {
case CPUCLASS_286:
printf("286");
break;
#if defined(I386_CPU)
case CPUCLASS_386:
printf("386");
break;
#endif
#if defined(I486_CPU)
case CPUCLASS_486:
printf("486");
bzero = i486_bzero;
break;
#endif
#if defined(I586_CPU)
case CPUCLASS_586:
printf("%d.%02d-MHz ",
(i586_ctr_freq + 4999) / 1000000,
((i586_ctr_freq + 4999) / 10000) % 100);
printf("586");
break;
#endif
#if defined(I686_CPU)
case CPUCLASS_686:
printf("%d.%02d-MHz ",
(i586_ctr_freq + 4999) / 1000000,
((i586_ctr_freq + 4999) / 10000) % 100);
printf("686");
break;
#endif
default:
printf("unknown"); /* will panic below... */
}
printf("-class CPU)\n");
#if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
if(*cpu_vendor)
printf(" Origin = \"%s\"",cpu_vendor);
if(cpu_id)
printf(" Id = 0x%lx",cpu_id);
if (!strcmp(cpu_vendor, "GenuineIntel")) {
printf(" Stepping=%ld", cpu_id & 0xf);
if (cpu_high > 0) {
/*
* Here we should probably set up flags indicating
* whether or not various features are available.
* The interesting ones are probably VME, PSE, PAE,
* and PGE. The code already assumes without bothering
* to check that all CPUs >= Pentium have a TSC and
* MSRs.
*/
printf("\n Features=0x%b", cpu_feature,
"\020"
"\001FPU"
"\002VME"
"\003DE"
"\004PSE"
"\005TSC"
"\006MSR"
"\007PAE"
"\010MCE"
"\011CX8"
"\012APIC"
"\013<b10>"
"\014<b11>"
"\015MTRR"
"\016PGE"
"\017MCA"
"\020CMOV"
);
}
}
/* Avoid ugly blank lines: only print newline when we have to. */
if (*cpu_vendor || cpu_id)
printf("\n");
#endif
#ifdef I686_CPU
/*
* XXX - Do PPro CPUID level=2 stuff here?
*/
#endif
/*
* Now that we have told the user what they have,
* let them know if that machine type isn't configured.
*/
switch (cpu_class) {
case CPUCLASS_286: /* a 286 should not make it this far, anyway */
#if !defined(I386_CPU) && !defined(I486_CPU) && !defined(I586_CPU) && !defined(I686_CPU)
#error This kernel is not configured for one of the supported CPUs
#endif
#if !defined(I386_CPU)
case CPUCLASS_386:
#endif
#if !defined(I486_CPU)
case CPUCLASS_486:
#endif
#if !defined(I586_CPU)
case CPUCLASS_586:
#endif
#if !defined(I686_CPU)
case CPUCLASS_686:
#endif
panic("CPU class not configured");
default:
break;
}
}
/*
* This routine is called specifically to set up cpu_class before
* startrtclock() uses it. Probably this should be rearranged so that
* startrtclock() doesn't need to run until after identifycpu() has been
* called. Another alternative formulation would be for this routine
* to do all the identification work, and make identifycpu() into a
* printing-only routine.
*/
void
earlysetcpuclass(void)
{
cpu_class = i386_cpus[cpu].cpu_class;
}
|
