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i386/identcpu.c: Add support for VIA C7
[dragonfly.git] / sys / platform / pc32 / i386 / identcpu.c
blob551a11bbb36aa7002001ed1841fd9a0cbaa75152
1 /*
2 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California.
3 * Copyright (c) 1992 Terrence R. Lambert.
4 * Copyright (c) 1997 KATO Takenori.
5 * Copyright (c) 2001 Tamotsu Hattori.
6 * Copyright (c) 2001 Mitsuru IWASAKI.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * William Jolitz.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
41 * $FreeBSD: src/sys/i386/i386/identcpu.c,v 1.80.2.15 2003/04/11 17:06:41 jhb Exp $
42 * $DragonFly: src/sys/platform/pc32/i386/identcpu.c,v 1.24 2008/11/24 13:14:21 swildner Exp $
43 */
44
45 #include "opt_cpu.h"
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/sysctl.h>
51 #include <sys/lock.h>
52
53 #include <machine/asmacros.h>
54 #include <machine/clock.h>
55 #include <machine/cputypes.h>
56 #include <machine/segments.h>
57 #include <machine/specialreg.h>
58 #include <machine/md_var.h>
59
60 #include <machine_base/isa/intr_machdep.h>
61
62 #define IDENTBLUE_CYRIX486 0
63 #define IDENTBLUE_IBMCPU 1
64 #define IDENTBLUE_CYRIXM2 2
65
66 /* XXX - should be in header file: */
67 void printcpuinfo(void);
68 void finishidentcpu(void);
69 #if defined(I586_CPU) && defined(CPU_WT_ALLOC)
70 void enable_K5_wt_alloc(void);
71 void enable_K6_wt_alloc(void);
72 void enable_K6_2_wt_alloc(void);
73 #endif
74 void panicifcpuunsupported(void);
75
76 static void identifycyrix(void);
77 #if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
78 static void print_AMD_features(void);
79 #endif
80 static void print_AMD_info(void);
81 static void print_AMD_assoc(int i);
82 static void print_transmeta_info(void);
83 static void setup_tmx86_longrun(void);
84 static void print_via_padlock_info(void);
85
86 int cpu_class = CPUCLASS_386;
87 u_int cpu_exthigh; /* Highest arg to extended CPUID */
88 u_int cyrix_did; /* Device ID of Cyrix CPU */
89 char machine[] = MACHINE;
90 SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD,
91 machine, 0, "Machine class");
92
93 static char cpu_model[128];
94 SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
95 cpu_model, 0, "Machine model");
96
97 static char cpu_brand[48];
98
99 #define MAX_ADDITIONAL_INFO 16
100
101 static const char *additional_cpu_info_ary[MAX_ADDITIONAL_INFO];
102 static u_int additional_cpu_info_count;
103
104 #define MAX_BRAND_INDEX 23
105
106 /*
107 * Brand ID's according to Intel document AP-485, number 241618-31, published
108 * September 2006, page 42.
109 */
110 static const char *cpu_brandtable[MAX_BRAND_INDEX + 1] = {
111 NULL, /* No brand */
112 "Intel Celeron",
113 "Intel Pentium III",
114 "Intel Pentium III Xeon",
115 "Intel Pentium III",
116 NULL, /* Unspecified */
117 "Mobile Intel Pentium III-M",
118 "Mobile Intel Celeron",
119 "Intel Pentium 4",
120 "Intel Pentium 4",
121 "Intel Celeron",
122 "Intel Xeon",
123 "Intel Xeon MP",
124 NULL, /* Unspecified */
125 "Mobile Intel Pentium 4-M",
126 "Mobile Intel Celeron",
127 NULL, /* Unspecified */
128 "Mobile Genuine Intel",
129 "Intel Celeron M",
130 "Mobile Intel Celeron",
131 "Intel Celeron",
132 "Mobile Genuine Intel",
133 "Intel Pentium M",
134 "Mobile Intel Celeron"
135 };
136
137 static struct cpu_nameclass i386_cpus[] = {
138 { "Intel 80286", CPUCLASS_286 }, /* CPU_286 */
139 { "i386SX", CPUCLASS_386 }, /* CPU_386SX */
140 { "i386DX", CPUCLASS_386 }, /* CPU_386 */
141 { "i486SX", CPUCLASS_486 }, /* CPU_486SX */
142 { "i486DX", CPUCLASS_486 }, /* CPU_486 */
143 { "Pentium", CPUCLASS_586 }, /* CPU_586 */
144 { "Cyrix 486", CPUCLASS_486 }, /* CPU_486DLC */
145 { "Pentium Pro", CPUCLASS_686 }, /* CPU_686 */
146 { "Cyrix 5x86", CPUCLASS_486 }, /* CPU_M1SC */
147 { "Cyrix 6x86", CPUCLASS_486 }, /* CPU_M1 */
148 { "Blue Lightning", CPUCLASS_486 }, /* CPU_BLUE */
149 { "Cyrix 6x86MX", CPUCLASS_686 }, /* CPU_M2 */
150 { "NexGen 586", CPUCLASS_386 }, /* CPU_NX586 (XXX) */
151 { "Cyrix 486S/DX", CPUCLASS_486 }, /* CPU_CY486DX */
152 { "Pentium II", CPUCLASS_686 }, /* CPU_PII */
153 { "Pentium III", CPUCLASS_686 }, /* CPU_PIII */
154 { "Pentium 4", CPUCLASS_686 }, /* CPU_P4 */
155 };
156
157 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
158 int has_f00f_bug = 0; /* Initialized so that it can be patched. */
159 #endif
160
161 void
162 printcpuinfo(void)
163 {
164 #if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
165 u_int regs[4], i;
166 #endif
167 char *brand;
168
169 cpu_class = i386_cpus[cpu].cpu_class;
170 kprintf("CPU: ");
171 strncpy(cpu_model, i386_cpus[cpu].cpu_name, sizeof (cpu_model));
172
173 #if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
174 /* Check for extended CPUID information and a processor name. */
175 if (cpu_high > 0 &&
176 (strcmp(cpu_vendor, "GenuineIntel") == 0 ||
177 strcmp(cpu_vendor, "AuthenticAMD") == 0 ||
178 strcmp(cpu_vendor, "GenuineTMx86") == 0 ||
179 strcmp(cpu_vendor, "TransmetaCPU") == 0)) {
180 do_cpuid(0x80000000, regs);
181 if (regs[0] >= 0x80000000) {
182 cpu_exthigh = regs[0];
183 if (cpu_exthigh >= 0x80000004) {
184 brand = cpu_brand;
185 for (i = 0x80000002; i < 0x80000005; i++) {
186 do_cpuid(i, regs);
187 memcpy(brand, regs, sizeof(regs));
188 brand += sizeof(regs);
189 }
190 }
191 }
192 }
193
194 if (strcmp(cpu_vendor, "GenuineIntel") == 0) {
195 if ((cpu_id & 0xf00) > 0x300) {
196 u_int brand_index;
197
198 cpu_model[0] = '\0';
199
200 switch (cpu_id & 0x3000) {
201 case 0x1000:
202 strcpy(cpu_model, "Overdrive ");
203 break;
204 case 0x2000:
205 strcpy(cpu_model, "Dual ");
206 break;
207 }
208
209 switch (cpu_id & 0xf00) {
210 case 0x400:
211 strcat(cpu_model, "i486 ");
212 /* Check the particular flavor of 486 */
213 switch (cpu_id & 0xf0) {
214 case 0x00:
215 case 0x10:
216 strcat(cpu_model, "DX");
217 break;
218 case 0x20:
219 strcat(cpu_model, "SX");
220 break;
221 case 0x30:
222 strcat(cpu_model, "DX2");
223 break;
224 case 0x40:
225 strcat(cpu_model, "SL");
226 break;
227 case 0x50:
228 strcat(cpu_model, "SX2");
229 break;
230 case 0x70:
231 strcat(cpu_model,
232 "DX2 Write-Back Enhanced");
233 break;
234 case 0x80:
235 strcat(cpu_model, "DX4");
236 break;
237 }
238 break;
239 case 0x500:
240 /* Check the particular flavor of 586 */
241 strcat(cpu_model, "Pentium");
242 switch (cpu_id & 0xf0) {
243 case 0x00:
244 strcat(cpu_model, " A-step");
245 break;
246 case 0x10:
247 strcat(cpu_model, "/P5");
248 break;
249 case 0x20:
250 strcat(cpu_model, "/P54C");
251 break;
252 case 0x30:
253 strcat(cpu_model, "/P54T Overdrive");
254 break;
255 case 0x40:
256 strcat(cpu_model, "/P55C");
257 break;
258 case 0x70:
259 strcat(cpu_model, "/P54C");
260 break;
261 case 0x80:
262 strcat(cpu_model, "/P55C (quarter-micron)");
263 break;
264 default:
265 /* nothing */
266 break;
267 }
268 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
269 /*
270 * XXX - If/when Intel fixes the bug, this
271 * should also check the version of the
272 * CPU, not just that it's a Pentium.
273 */
274 has_f00f_bug = 1;
275 #endif
276 break;
277 case 0x600:
278 /* Check the particular flavor of 686 */
279 switch (cpu_id & 0xf0) {
280 case 0x00:
281 strcat(cpu_model, "Pentium Pro A-step");
282 break;
283 case 0x10:
284 strcat(cpu_model, "Pentium Pro");
285 break;
286 case 0x30:
287 case 0x50:
288 case 0x60:
289 strcat(cpu_model,
290 "Pentium II/Pentium II Xeon/Celeron");
291 cpu = CPU_PII;
292 break;
293 case 0x70:
294 case 0x80:
295 case 0xa0:
296 case 0xb0:
297 strcat(cpu_model,
298 "Pentium III/Pentium III Xeon/Celeron");
299 cpu = CPU_PIII;
300 break;
301 default:
302 strcat(cpu_model, "Unknown 80686");
303 break;
304 }
305 break;
306 case 0xf00:
307 strcat(cpu_model, "Pentium 4");
308 cpu = CPU_P4;
309 break;
310 default:
311 strcat(cpu_model, "unknown");
312 break;
313 }
314
315 /*
316 * If we didn't get a brand name from the extended
317 * CPUID, try to look it up in the brand table.
318 */
319 if (cpu_high > 0 && *cpu_brand == '\0') {
320 brand_index = cpu_procinfo & CPUID_BRAND_INDEX;
321 if (brand_index <= MAX_BRAND_INDEX &&
322 cpu_brandtable[brand_index] != NULL)
323 strcpy(cpu_brand,
324 cpu_brandtable[brand_index]);
325 }
326 }
327 } else if (strcmp(cpu_vendor, "AuthenticAMD") == 0) {
328 /*
329 * Values taken from AMD Processor Recognition
330 * http://www.amd.com/K6/k6docs/pdf/20734g.pdf
331 * (also describes ``Features'' encodings.
332 */
333 strcpy(cpu_model, "AMD ");
334 switch (cpu_id & 0xFF0) {
335 case 0x410:
336 strcat(cpu_model, "Standard Am486DX");
337 break;
338 case 0x430:
339 strcat(cpu_model, "Enhanced Am486DX2 Write-Through");
340 break;
341 case 0x470:
342 strcat(cpu_model, "Enhanced Am486DX2 Write-Back");
343 break;
344 case 0x480:
345 strcat(cpu_model, "Enhanced Am486DX4/Am5x86 Write-Through");
346 break;
347 case 0x490:
348 strcat(cpu_model, "Enhanced Am486DX4/Am5x86 Write-Back");
349 break;
350 case 0x4E0:
351 strcat(cpu_model, "Am5x86 Write-Through");
352 break;
353 case 0x4F0:
354 strcat(cpu_model, "Am5x86 Write-Back");
355 break;
356 case 0x500:
357 strcat(cpu_model, "K5 model 0");
358 tsc_is_broken = 1;
359 break;
360 case 0x510:
361 strcat(cpu_model, "K5 model 1");
362 break;
363 case 0x520:
364 strcat(cpu_model, "K5 PR166 (model 2)");
365 break;
366 case 0x530:
367 strcat(cpu_model, "K5 PR200 (model 3)");
368 break;
369 case 0x560:
370 strcat(cpu_model, "K6");
371 break;
372 case 0x570:
373 strcat(cpu_model, "K6 266 (model 1)");
374 break;
375 case 0x580:
376 strcat(cpu_model, "K6-2");
377 break;
378 case 0x590:
379 strcat(cpu_model, "K6-III");
380 break;
381 default:
382 strcat(cpu_model, "Unknown");
383 break;
384 }
385 #if defined(I586_CPU) && defined(CPU_WT_ALLOC)
386 if ((cpu_id & 0xf00) == 0x500) {
387 if (((cpu_id & 0x0f0) > 0)
388 && ((cpu_id & 0x0f0) < 0x60)
389 && ((cpu_id & 0x00f) > 3))
390 enable_K5_wt_alloc();
391 else if (((cpu_id & 0x0f0) > 0x80)
392 || (((cpu_id & 0x0f0) == 0x80)
393 && (cpu_id & 0x00f) > 0x07))
394 enable_K6_2_wt_alloc();
395 else if ((cpu_id & 0x0f0) > 0x50)
396 enable_K6_wt_alloc();
397 }
398 #endif
399 } else if (strcmp(cpu_vendor, "CyrixInstead") == 0) {
400 strcpy(cpu_model, "Cyrix ");
401 switch (cpu_id & 0xff0) {
402 case 0x440:
403 strcat(cpu_model, "MediaGX");
404 break;
405 case 0x520:
406 strcat(cpu_model, "6x86");
407 break;
408 case 0x540:
409 cpu_class = CPUCLASS_586;
410 strcat(cpu_model, "GXm");
411 break;
412 case 0x600:
413 strcat(cpu_model, "6x86MX");
414 break;
415 default:
416 /*
417 * Even though CPU supports the cpuid
418 * instruction, it can be disabled.
419 * Therefore, this routine supports all Cyrix
420 * CPUs.
421 */
422 switch (cyrix_did & 0xf0) {
423 case 0x00:
424 switch (cyrix_did & 0x0f) {
425 case 0x00:
426 strcat(cpu_model, "486SLC");
427 break;
428 case 0x01:
429 strcat(cpu_model, "486DLC");
430 break;
431 case 0x02:
432 strcat(cpu_model, "486SLC2");
433 break;
434 case 0x03:
435 strcat(cpu_model, "486DLC2");
436 break;
437 case 0x04:
438 strcat(cpu_model, "486SRx");
439 break;
440 case 0x05:
441 strcat(cpu_model, "486DRx");
442 break;
443 case 0x06:
444 strcat(cpu_model, "486SRx2");
445 break;
446 case 0x07:
447 strcat(cpu_model, "486DRx2");
448 break;
449 case 0x08:
450 strcat(cpu_model, "486SRu");
451 break;
452 case 0x09:
453 strcat(cpu_model, "486DRu");
454 break;
455 case 0x0a:
456 strcat(cpu_model, "486SRu2");
457 break;
458 case 0x0b:
459 strcat(cpu_model, "486DRu2");
460 break;
461 default:
462 strcat(cpu_model, "Unknown");
463 break;
464 }
465 break;
466 case 0x10:
467 switch (cyrix_did & 0x0f) {
468 case 0x00:
469 strcat(cpu_model, "486S");
470 break;
471 case 0x01:
472 strcat(cpu_model, "486S2");
473 break;
474 case 0x02:
475 strcat(cpu_model, "486Se");
476 break;
477 case 0x03:
478 strcat(cpu_model, "486S2e");
479 break;
480 case 0x0a:
481 strcat(cpu_model, "486DX");
482 break;
483 case 0x0b:
484 strcat(cpu_model, "486DX2");
485 break;
486 case 0x0f:
487 strcat(cpu_model, "486DX4");
488 break;
489 default:
490 strcat(cpu_model, "Unknown");
491 break;
492 }
493 break;
494 case 0x20:
495 if ((cyrix_did & 0x0f) < 8)
496 strcat(cpu_model, "6x86"); /* Where did you get it? */
497 else
498 strcat(cpu_model, "5x86");
499 break;
500 case 0x30:
501 strcat(cpu_model, "6x86");
502 break;
503 case 0x40:
504 if ((cyrix_did & 0xf000) == 0x3000) {
505 cpu_class = CPUCLASS_586;
506 strcat(cpu_model, "GXm");
507 } else
508 strcat(cpu_model, "MediaGX");
509 break;
510 case 0x50:
511 strcat(cpu_model, "6x86MX");
512 break;
513 case 0xf0:
514 switch (cyrix_did & 0x0f) {
515 case 0x0d:
516 strcat(cpu_model, "Overdrive CPU");
517 break;
518 case 0x0e:
519 strcpy(cpu_model, "Texas Instruments 486SXL");
520 break;
521 case 0x0f:
522 strcat(cpu_model, "486SLC/DLC");
523 break;
524 default:
525 strcat(cpu_model, "Unknown");
526 break;
527 }
528 break;
529 default:
530 strcat(cpu_model, "Unknown");
531 break;
532 }
533 break;
534 }
535 } else if (strcmp(cpu_vendor, "RiseRiseRise") == 0) {
536 strcpy(cpu_model, "Rise ");
537 switch (cpu_id & 0xff0) {
538 case 0x500:
539 strcat(cpu_model, "mP6");
540 break;
541 default:
542 strcat(cpu_model, "Unknown");
543 }
544 } else if (strcmp(cpu_vendor, "CentaurHauls") == 0) {
545 switch (cpu_id & 0xff0) {
546 case 0x540:
547 strcpy(cpu_model, "IDT WinChip C6");
548 tsc_is_broken = 1;
549 break;
550 case 0x580:
551 strcpy(cpu_model, "IDT WinChip 2");
552 break;
553 case 0x660:
554 strcpy(cpu_model, "VIA C3 Samuel");
555 break;
556 case 0x670:
557 if (cpu_id & 0x8)
558 strcpy(cpu_model, "VIA C3 Ezra");
559 else
560 strcpy(cpu_model, "VIA C3 Samuel 2");
561 break;
562 case 0x680:
563 strcpy(cpu_model, "VIA C3 Ezra-T");
564 break;
565 case 0x690:
566 strcpy(cpu_model, "VIA C3 Nehemiah");
567 break;
568 case 0x6a0:
569 case 0x6d0:
570 strcpy(cpu_model, "VIA C7 Esther");
571 break;
572 default:
573 strcpy(cpu_model, "VIA/IDT Unknown");
574 }
575 } else if (strcmp(cpu_vendor, "IBM") == 0) {
576 strcpy(cpu_model, "Blue Lightning CPU");
577 }
578
579 /*
580 * Replace cpu_model with cpu_brand minus leading spaces if
581 * we have one.
582 */
583 brand = cpu_brand;
584 while (*brand == ' ')
585 ++brand;
586 if (*brand != '\0')
587 strcpy(cpu_model, brand);
588
589 #endif
590
591 kprintf("%s (", cpu_model);
592 switch(cpu_class) {
593 case CPUCLASS_286:
594 kprintf("286");
595 break;
596 case CPUCLASS_386:
597 kprintf("386");
598 break;
599 #if defined(I486_CPU)
600 case CPUCLASS_486:
601 kprintf("486");
602 /* bzero = i486_bzero; */
603 break;
604 #endif
605 #if defined(I586_CPU)
606 case CPUCLASS_586:
607 kprintf("%lld.%02lld-MHz ",
608 (tsc_frequency + 4999LL) / 1000000LL,
609 ((tsc_frequency + 4999LL) / 10000LL) % 100LL);
610 kprintf("586");
611 break;
612 #endif
613 #if defined(I686_CPU)
614 case CPUCLASS_686:
615 kprintf("%lld.%02lld-MHz ",
616 (tsc_frequency + 4999LL) / 1000000LL,
617 ((tsc_frequency + 4999LL) / 10000LL) % 100LL);
618 kprintf("686");
619 break;
620 #endif
621 default:
622 kprintf("Unknown"); /* will panic below... */
623 }
624 kprintf("-class CPU)\n");
625 #if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
626 if(*cpu_vendor)
627 kprintf(" Origin = \"%s\"",cpu_vendor);
628 if(cpu_id)
629 kprintf(" Id = 0x%x", cpu_id);
630
631 if (strcmp(cpu_vendor, "GenuineIntel") == 0 ||
632 strcmp(cpu_vendor, "AuthenticAMD") == 0 ||
633 strcmp(cpu_vendor, "RiseRiseRise") == 0 ||
634 strcmp(cpu_vendor, "CentaurHauls") == 0 ||
635 ((strcmp(cpu_vendor, "CyrixInstead") == 0) &&
636 ((cpu_id & 0xf00) > 0x500))) {
637 kprintf(" Stepping = %u", cpu_id & 0xf);
638 if (strcmp(cpu_vendor, "CyrixInstead") == 0)
639 kprintf(" DIR=0x%04x", cyrix_did);
640 if (cpu_high > 0) {
641 /*
642 * Here we should probably set up flags indicating
643 * whether or not various features are available.
644 * The interesting ones are probably VME, PSE, PAE,
645 * and PGE. The code already assumes without bothering
646 * to check that all CPUs >= Pentium have a TSC and
647 * MSRs.
648 */
649 kprintf("\n Features=0x%b", cpu_feature,
650 "\020"
651 "\001FPU" /* Integral FPU */
652 "\002VME" /* Extended VM86 mode support */
653 "\003DE" /* Debugging Extensions (CR4.DE) */
654 "\004PSE" /* 4MByte page tables */
655 "\005TSC" /* Timestamp counter */
656 "\006MSR" /* Machine specific registers */
657 "\007PAE" /* Physical address extension */
658 "\010MCE" /* Machine Check support */
659 "\011CX8" /* CMPEXCH8 instruction */
660 "\012APIC" /* SMP local APIC */
661 "\013oldMTRR" /* Previous implementation of MTRR */
662 "\014SEP" /* Fast System Call */
663 "\015MTRR" /* Memory Type Range Registers */
664 "\016PGE" /* PG_G (global bit) support */
665 "\017MCA" /* Machine Check Architecture */
666 "\020CMOV" /* CMOV instruction */
667 "\021PAT" /* Page attributes table */
668 "\022PSE36" /* 36 bit address space support */
669 "\023PN" /* Processor Serial number */
670 "\024CLFLUSH" /* Has the CLFLUSH instruction */
671 "\025<b20>"
672 "\026DTS" /* Debug Trace Store */
673 "\027ACPI" /* ACPI support */
674 "\030MMX" /* MMX instructions */
675 "\031FXSR" /* FXSAVE/FXRSTOR */
676 "\032SSE" /* Streaming SIMD Extensions */
677 "\033SSE2" /* Streaming SIMD Extensions #2 */
678 "\034SS" /* Self snoop */
679 "\035HTT" /* Hyperthreading (see EBX bit 16-23) */
680 "\036TM" /* Thermal Monitor clock slowdown */
681 "\037IA64" /* CPU can execute IA64 instructions */
682 "\040PBE" /* Pending Break Enable */
683 );
684
685 if (cpu_feature2 != 0) {
686 kprintf("\n Features2=0x%b", cpu_feature2,
687 "\020"
688 "\001SSE3" /* SSE3 */
689 "\002<b1>"
690 "\003DTES64" /* 64-bit Debug Trace */
691 "\004MON" /* MONITOR/MWAIT Instructions */
692 "\005DS_CPL" /* CPL Qualified Debug Store */
693 "\006VMX" /* Virtual Machine Extensions */
694 "\007SMX" /* Safer Mode Extensions */
695 "\010EST" /* Enhanced SpeedStep */
696 "\011TM2" /* Thermal Monitor 2 */
697 "\012SSSE3" /* SSSE3 */
698 "\013CNXT-ID" /* L1 context ID available */
699 "\014<b11>"
700 "\015<b12>"
701 "\016CX16" /* CMPXCHG16B Instruction */
702 "\017xTPR" /* Send Task Priority Messages*/
703 "\020PDCM" /* Perf/Debug Capability MSR */
704 "\021<b16>"
705 "\022<b17>"
706 "\023DCA" /* Direct Cache Access */
707 "\024SSE4.1"
708 "\025SSE4.2"
709 "\026x2APIC" /* xAPIC Extensions */
710 "\027MOVBE" /* MOVBE instruction */
711 "\030POPCNT"
712 "\031<b24>"
713 "\032<b25>"
714 "\033XSAVE"
715 "\034OSXSAVE"
716 "\035<b28>"
717 "\036<b29>"
718 "\037<b30>"
719 "\040<b31>"
720 );
721 }
722
723 /*
724 * If this CPU supports hyperthreading then mention
725 * the number of logical CPU's it contains.
726 */
727 if (cpu_feature & CPUID_HTT &&
728 (cpu_procinfo & CPUID_HTT_CORES) >> 16 > 1)
729 kprintf("\n Hyperthreading: %d logical CPUs",
730 (cpu_procinfo & CPUID_HTT_CORES) >> 16);
731 }
732 if (strcmp(cpu_vendor, "AuthenticAMD") == 0 &&
733 cpu_exthigh >= 0x80000001)
734 print_AMD_features();
735 } else if (strcmp(cpu_vendor, "CyrixInstead") == 0) {
736 kprintf(" DIR=0x%04x", cyrix_did);
737 kprintf(" Stepping=%u", (cyrix_did & 0xf000) >> 12);
738 kprintf(" Revision=%u", (cyrix_did & 0x0f00) >> 8);
739 #ifndef CYRIX_CACHE_REALLY_WORKS
740 if (cpu == CPU_M1 && (cyrix_did & 0xff00) < 0x1700)
741 kprintf("\n CPU cache: write-through mode");
742 #endif
743 }
744 if (strcmp(cpu_vendor, "CentaurHauls") == 0)
745 print_via_padlock_info();
746
747 /* Avoid ugly blank lines: only print newline when we have to. */
748 if (*cpu_vendor || cpu_id)
749 kprintf("\n");
750
751 #endif
752 if (strcmp(cpu_vendor, "GenuineTMx86") == 0 ||
753 strcmp(cpu_vendor, "TransmetaCPU") == 0) {
754 setup_tmx86_longrun();
755 }
756
757 for (i = 0; i < additional_cpu_info_count; ++i) {
758 kprintf(" %s\n", additional_cpu_info_ary[i]);
759 }
760
761 if (!bootverbose)
762 return;
763
764 if (strcmp(cpu_vendor, "AuthenticAMD") == 0)
765 print_AMD_info();
766 else if (strcmp(cpu_vendor, "GenuineTMx86") == 0 ||
767 strcmp(cpu_vendor, "TransmetaCPU") == 0)
768 print_transmeta_info();
769
770 #ifdef I686_CPU
771 /*
772 * XXX - Do PPro CPUID level=2 stuff here?
773 *
774 * No, but maybe in a print_Intel_info() function called from here.
775 */
776 #endif
777 }
778
779 void
780 panicifcpuunsupported(void)
781 {
782
783 #if !defined(I486_CPU) && !defined(I586_CPU) && !defined(I686_CPU)
784 #error This kernel is not configured for one of the supported CPUs
785 #endif
786 /*
787 * Now that we have told the user what they have,
788 * let them know if that machine type isn't configured.
789 */
790 switch (cpu_class) {
791 /*
792 * A 286 and 386 should not make it this far, anyway.
793 */
794 case CPUCLASS_286:
795 case CPUCLASS_386:
796 #if !defined(I486_CPU)
797 case CPUCLASS_486:
798 #endif
799 #if !defined(I586_CPU)
800 case CPUCLASS_586:
801 #endif
802 #if !defined(I686_CPU)
803 case CPUCLASS_686:
804 #endif
805 panic("CPU class not configured");
806 default:
807 break;
808 }
809 }
810
811
812 static volatile u_int trap_by_rdmsr;
813
814 /*
815 * Special exception 6 handler.
816 * The rdmsr instruction generates invalid opcodes fault on 486-class
817 * Cyrix CPU. Stacked eip register points the rdmsr instruction in the
818 * function identblue() when this handler is called. Stacked eip should
819 * be advanced.
820 */
821 inthand_t bluetrap6;
822
823 __asm(
824 " .text \n"
825 " .p2align 2,0x90 \n"
826 " .type " __XSTRING(CNAME(bluetrap6)) ",@function \n"
827 __XSTRING(CNAME(bluetrap6)) ": \n"
828 " ss \n"
829 " movl $0xa8c1d," __XSTRING(CNAME(trap_by_rdmsr)) " \n"
830 " addl $2, (%esp) # I know rdmsr is a 2-bytes instruction. \n"
831 " iret \n"
832 );
833
834 /*
835 * Special exception 13 handler.
836 * Accessing non-existent MSR generates general protection fault.
837 */
838 inthand_t bluetrap13;
839
840 __asm(
841 " .text \n"
842 " .p2align 2,0x90 \n"
843 " .type " __XSTRING(CNAME(bluetrap13)) ",@function \n"
844 __XSTRING(CNAME(bluetrap13)) ": \n"
845 " ss \n"
846 " movl $0xa89c4," __XSTRING(CNAME(trap_by_rdmsr)) " \n"
847 " popl %eax # discard errorcode. \n"
848 " addl $2, (%esp) # I know rdmsr is a 2-bytes instruction. \n"
849 " iret \n"
850 );
851
852 /*
853 * Distinguish IBM Blue Lightning CPU from Cyrix CPUs that does not
854 * support cpuid instruction. This function should be called after
855 * loading interrupt descriptor table register.
856 *
857 * I don't like this method that handles fault, but I couldn't get
858 * information for any other methods. Does blue giant know?
859 */
860 static int
861 identblue(void)
862 {
863
864 trap_by_rdmsr = 0;
865
866 /*
867 * Cyrix 486-class CPU does not support rdmsr instruction.
868 * The rdmsr instruction generates invalid opcode fault, and exception
869 * will be trapped by bluetrap6() on Cyrix 486-class CPU. The
870 * bluetrap6() set the magic number to trap_by_rdmsr.
871 */
872 setidt(6, bluetrap6, SDT_SYS386TGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
873
874 /*
875 * Certain BIOS disables cpuid instruction of Cyrix 6x86MX CPU.
876 * In this case, rdmsr generates general protection fault, and
877 * exception will be trapped by bluetrap13().
878 */
879 setidt(13, bluetrap13, SDT_SYS386TGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
880
881 rdmsr(0x1002); /* Cyrix CPU generates fault. */
882
883 if (trap_by_rdmsr == 0xa8c1d)
884 return IDENTBLUE_CYRIX486;
885 else if (trap_by_rdmsr == 0xa89c4)
886 return IDENTBLUE_CYRIXM2;
887 return IDENTBLUE_IBMCPU;
888 }
889
890
891 /*
892 * identifycyrix() set lower 16 bits of cyrix_did as follows:
893 *
894 * F E D C B A 9 8 7 6 5 4 3 2 1 0
895 * +-------+-------+---------------+
896 * | SID | RID | Device ID |
897 * | (DIR 1) | (DIR 0) |
898 * +-------+-------+---------------+
899 */
900 static void
901 identifycyrix(void)
902 {
903 int ccr2_test = 0, dir_test = 0;
904 u_char ccr2, ccr3;
905
906 mpintr_lock();
907
908 ccr2 = read_cyrix_reg(CCR2);
909 write_cyrix_reg(CCR2, ccr2 ^ CCR2_LOCK_NW);
910 read_cyrix_reg(CCR2);
911 if (read_cyrix_reg(CCR2) != ccr2)
912 ccr2_test = 1;
913 write_cyrix_reg(CCR2, ccr2);
914
915 ccr3 = read_cyrix_reg(CCR3);
916 write_cyrix_reg(CCR3, ccr3 ^ CCR3_MAPEN3);
917 read_cyrix_reg(CCR3);
918 if (read_cyrix_reg(CCR3) != ccr3)
919 dir_test = 1; /* CPU supports DIRs. */
920 write_cyrix_reg(CCR3, ccr3);
921
922 if (dir_test) {
923 /* Device ID registers are available. */
924 cyrix_did = read_cyrix_reg(DIR1) << 8;
925 cyrix_did += read_cyrix_reg(DIR0);
926 } else if (ccr2_test)
927 cyrix_did = 0x0010; /* 486S A-step */
928 else
929 cyrix_did = 0x00ff; /* Old 486SLC/DLC and TI486SXLC/SXL */
930
931 mpintr_unlock();
932 }
933
934 /*
935 * Final stage of CPU identification. -- Should I check TI?
936 */
937 void
938 finishidentcpu(void)
939 {
940 int isblue = 0;
941 u_char ccr3;
942 u_int regs[4];
943
944 if (strcmp(cpu_vendor, "CyrixInstead") == 0) {
945 if (cpu == CPU_486) {
946 /*
947 * These conditions are equivalent to:
948 * - CPU does not support cpuid instruction.
949 * - Cyrix/IBM CPU is detected.
950 */
951 isblue = identblue();
952 if (isblue == IDENTBLUE_IBMCPU) {
953 strcpy(cpu_vendor, "IBM");
954 cpu = CPU_BLUE;
955 return;
956 }
957 }
958 switch (cpu_id & 0xf00) {
959 case 0x600:
960 /*
961 * Cyrix's datasheet does not describe DIRs.
962 * Therefor, I assume it does not have them
963 * and use the result of the cpuid instruction.
964 * XXX they seem to have it for now at least. -Peter
965 */
966 identifycyrix();
967 cpu = CPU_M2;
968 break;
969 default:
970 identifycyrix();
971 /*
972 * This routine contains a trick.
973 * Don't check (cpu_id & 0x00f0) == 0x50 to detect M2, now.
974 */
975 switch (cyrix_did & 0x00f0) {
976 case 0x00:
977 case 0xf0:
978 cpu = CPU_486DLC;
979 break;
980 case 0x10:
981 cpu = CPU_CY486DX;
982 break;
983 case 0x20:
984 if ((cyrix_did & 0x000f) < 8)
985 cpu = CPU_M1;
986 else
987 cpu = CPU_M1SC;
988 break;
989 case 0x30:
990 cpu = CPU_M1;
991 break;
992 case 0x40:
993 /* MediaGX CPU */
994 cpu = CPU_M1SC;
995 break;
996 default:
997 /* M2 and later CPUs are treated as M2. */
998 cpu = CPU_M2;
999
1000 /*
1001 * enable cpuid instruction.
1002 */
1003 ccr3 = read_cyrix_reg(CCR3);
1004 write_cyrix_reg(CCR3, CCR3_MAPEN0);
1005 write_cyrix_reg(CCR4, read_cyrix_reg(CCR4) | CCR4_CPUID);
1006 write_cyrix_reg(CCR3, ccr3);
1007
1008 do_cpuid(0, regs);
1009 cpu_high = regs[0]; /* eax */
1010 do_cpuid(1, regs);
1011 cpu_id = regs[0]; /* eax */
1012 cpu_feature = regs[3]; /* edx */
1013 break;
1014 }
1015 }
1016 } else if (cpu == CPU_486 && *cpu_vendor == '\0') {
1017 /*
1018 * There are BlueLightning CPUs that do not change
1019 * undefined flags by dividing 5 by 2. In this case,
1020 * the CPU identification routine in locore.s leaves
1021 * cpu_vendor null string and puts CPU_486 into the
1022 * cpu.
1023 */
1024 isblue = identblue();
1025 if (isblue == IDENTBLUE_IBMCPU) {
1026 strcpy(cpu_vendor, "IBM");
1027 cpu = CPU_BLUE;
1028 return;
1029 }
1030 }
1031 }
1032
1033 static void
1034 print_AMD_assoc(int i)
1035 {
1036 if (i == 255)
1037 kprintf(", fully associative\n");
1038 else
1039 kprintf(", %d-way associative\n", i);
1040 }
1041
1042 /*
1043 * #31116 Rev 3.06 section 3.9
1044 * CPUID Fn8000_0006 L2/L3 Cache and L2 TLB Identifiers
1045 */
1046 static void
1047 print_AMD_L2L3_assoc(int i)
1048 {
1049 static const char *assoc_str[] = {
1050 [0x0] = "disabled",
1051 [0x1] = "direct mapped",
1052 [0x2] = "2-way associative",
1053 [0x4] = "4-way associative",
1054 [0x6] = "8-way associative",
1055 [0x8] = "16-way associative",
1056 [0xa] = "32-way associative",
1057 [0xb] = "48-way associative",
1058 [0xc] = "64-way associative",
1059 [0xd] = "96-way associative",
1060 [0xe] = "128-way associative",
1061 [0xf] = "fully associative"
1062 };
1063
1064 i &= 0xf;
1065 if (assoc_str[i] == NULL)
1066 kprintf(", unknown associative\n");
1067 else
1068 kprintf(", %s\n", assoc_str[i]);
1069 }
1070
1071 static void
1072 print_AMD_info(void)
1073 {
1074 quad_t amd_whcr;
1075
1076 if (cpu_exthigh >= 0x80000005) {
1077 u_int regs[4];
1078
1079 do_cpuid(0x80000005, regs);
1080 kprintf("Data TLB: %d entries", (regs[1] >> 16) & 0xff);
1081 print_AMD_assoc(regs[1] >> 24);
1082 kprintf("Instruction TLB: %d entries", regs[1] & 0xff);
1083 print_AMD_assoc((regs[1] >> 8) & 0xff);
1084 kprintf("L1 data cache: %d kbytes", regs[2] >> 24);
1085 kprintf(", %d bytes/line", regs[2] & 0xff);
1086 kprintf(", %d lines/tag", (regs[2] >> 8) & 0xff);
1087 print_AMD_assoc((regs[2] >> 16) & 0xff);
1088 kprintf("L1 instruction cache: %d kbytes", regs[3] >> 24);
1089 kprintf(", %d bytes/line", regs[3] & 0xff);
1090 kprintf(", %d lines/tag", (regs[3] >> 8) & 0xff);
1091 print_AMD_assoc((regs[3] >> 16) & 0xff);
1092 if (cpu_exthigh >= 0x80000006) { /* K6-III, or later */
1093 do_cpuid(0x80000006, regs);
1094 /*
1095 * Report right L2 cache size on Duron rev. A0.
1096 */
1097 if ((cpu_id & 0xFF0) == 0x630)
1098 kprintf("L2 internal cache: 64 kbytes");
1099 else
1100 kprintf("L2 internal cache: %d kbytes",
1101 regs[2] >> 16);
1102
1103 kprintf(", %d bytes/line", regs[2] & 0xff);
1104 kprintf(", %d lines/tag", (regs[2] >> 8) & 0x0f);
1105 print_AMD_L2L3_assoc((regs[2] >> 12) & 0x0f);
1106
1107 /*
1108 * #31116 Rev 3.06 section 2.16.2:
1109 * ... If EDX[31:16] is not zero then the processor
1110 * includes an L3. ...
1111 */
1112 if ((regs[3] & 0xffff0000) != 0) {
1113 kprintf("L3 shared cache: %d kbytes",
1114 (regs[3] >> 18) * 512);
1115 kprintf(", %d bytes/line", regs[3] & 0xff);
1116 kprintf(", %d lines/tag", (regs[3] >> 8) & 0x0f);
1117 print_AMD_L2L3_assoc((regs[3] >> 12) & 0x0f);
1118 }
1119 }
1120 }
1121 if (((cpu_id & 0xf00) == 0x500)
1122 && (((cpu_id & 0x0f0) > 0x80)
1123 || (((cpu_id & 0x0f0) == 0x80)
1124 && (cpu_id & 0x00f) > 0x07))) {
1125 /* K6-2(new core [Stepping 8-F]), K6-III or later */
1126 amd_whcr = rdmsr(0xc0000082);
1127 if (!(amd_whcr & (0x3ff << 22))) {
1128 kprintf("Write Allocate Disable\n");
1129 } else {
1130 kprintf("Write Allocate Enable Limit: %dM bytes\n",
1131 (u_int32_t)((amd_whcr & (0x3ff << 22)) >> 22) * 4);
1132 kprintf("Write Allocate 15-16M bytes: %s\n",
1133 (amd_whcr & (1 << 16)) ? "Enable" : "Disable");
1134 }
1135 } else if (((cpu_id & 0xf00) == 0x500)
1136 && ((cpu_id & 0x0f0) > 0x50)) {
1137 /* K6, K6-2(old core) */
1138 amd_whcr = rdmsr(0xc0000082);
1139 if (!(amd_whcr & (0x7f << 1))) {
1140 kprintf("Write Allocate Disable\n");
1141 } else {
1142 kprintf("Write Allocate Enable Limit: %dM bytes\n",
1143 (u_int32_t)((amd_whcr & (0x7f << 1)) >> 1) * 4);
1144 kprintf("Write Allocate 15-16M bytes: %s\n",
1145 (amd_whcr & 0x0001) ? "Enable" : "Disable");
1146 kprintf("Hardware Write Allocate Control: %s\n",
1147 (amd_whcr & 0x0100) ? "Enable" : "Disable");
1148 }
1149 }
1150 }
1151
1152 #if defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)
1153 static void
1154 print_AMD_features(void)
1155 {
1156 u_int regs[4];
1157
1158 /*
1159 * Values taken from AMD Processor Recognition
1160 * http://www.amd.com/products/cpg/athlon/techdocs/pdf/20734.pdf
1161 */
1162 do_cpuid(0x80000001, regs);
1163 kprintf("\n AMD Features=0x%b", regs[3] &~ cpu_feature,
1164 "\020" /* in hex */
1165 "\001FPU" /* Integral FPU */
1166 "\002VME" /* Extended VM86 mode support */
1167 "\003DE" /* Debug extensions */
1168 "\004PSE" /* 4MByte page tables */
1169 "\005TSC" /* Timestamp counter */
1170 "\006MSR" /* Machine specific registers */
1171 "\007PAE" /* Physical address extension */
1172 "\010MCE" /* Machine Check support */
1173 "\011CX8" /* CMPEXCH8 instruction */
1174 "\012APIC" /* SMP local APIC */
1175 "\013<b10>"
1176 "\014SYSCALL" /* SYSENTER/SYSEXIT instructions */
1177 "\015MTRR" /* Memory Type Range Registers */
1178 "\016PGE" /* PG_G (global bit) support */
1179 "\017MCA" /* Machine Check Architecture */
1180 "\020ICMOV" /* CMOV instruction */
1181 "\021PAT" /* Page attributes table */
1182 "\022PGE36" /* 36 bit address space support */
1183 "\023RSVD" /* Reserved, unknown */
1184 "\024MP" /* Multiprocessor Capable */
1185 "\025NX" /* No-execute page protection */
1186 "\026<b21>"
1187 "\027AMIE" /* AMD MMX Instruction Extensions */
1188 "\030MMX"
1189 "\031FXSAVE" /* FXSAVE/FXRSTOR */
1190 "\032<b25>"
1191 "\033<b26>"
1192 "\034RDTSCP" /* RDTSCP instruction */
1193 "\035<b28>"
1194 "\036LM" /* Long mode */
1195 "\037DSP" /* AMD 3DNow! Instruction Extensions */
1196 "\0403DNow!"
1197 );
1198 }
1199 #endif
1200
1201 /*
1202 * Transmeta Crusoe LongRun Support by Tamotsu Hattori.
1203 */
1204
1205 #define MSR_TMx86_LONGRUN 0x80868010
1206 #define MSR_TMx86_LONGRUN_FLAGS 0x80868011
1207
1208 #define LONGRUN_MODE_MASK(x) ((x) & 0x000000007f)
1209 #define LONGRUN_MODE_RESERVED(x) ((x) & 0xffffff80)
1210 #define LONGRUN_MODE_WRITE(x, y) (LONGRUN_MODE_RESERVED(x) | LONGRUN_MODE_MASK(y))
1211
1212 #define LONGRUN_MODE_MINFREQUENCY 0x00
1213 #define LONGRUN_MODE_ECONOMY 0x01
1214 #define LONGRUN_MODE_PERFORMANCE 0x02
1215 #define LONGRUN_MODE_MAXFREQUENCY 0x03
1216 #define LONGRUN_MODE_UNKNOWN 0x04
1217 #define LONGRUN_MODE_MAX 0x04
1218
1219 union msrinfo {
1220 u_int64_t msr;
1221 u_int32_t regs[2];
1222 };
1223
1224 u_int32_t longrun_modes[LONGRUN_MODE_MAX][3] = {
1225 /* MSR low, MSR high, flags bit0 */
1226 { 0, 0, 0}, /* LONGRUN_MODE_MINFREQUENCY */
1227 { 0, 100, 0}, /* LONGRUN_MODE_ECONOMY */
1228 { 0, 100, 1}, /* LONGRUN_MODE_PERFORMANCE */
1229 { 100, 100, 1}, /* LONGRUN_MODE_MAXFREQUENCY */
1230 };
1231
1232 static u_int
1233 tmx86_get_longrun_mode(void)
1234 {
1235 union msrinfo msrinfo;
1236 u_int low, high, flags, mode;
1237
1238 mpintr_lock();
1239
1240 msrinfo.msr = rdmsr(MSR_TMx86_LONGRUN);
1241 low = LONGRUN_MODE_MASK(msrinfo.regs[0]);
1242 high = LONGRUN_MODE_MASK(msrinfo.regs[1]);
1243 flags = rdmsr(MSR_TMx86_LONGRUN_FLAGS) & 0x01;
1244
1245 for (mode = 0; mode < LONGRUN_MODE_MAX; mode++) {
1246 if (low == longrun_modes[mode][0] &&
1247 high == longrun_modes[mode][1] &&
1248 flags == longrun_modes[mode][2]) {
1249 goto out;
1250 }
1251 }
1252 mode = LONGRUN_MODE_UNKNOWN;
1253 out:
1254 mpintr_unlock();
1255 return (mode);
1256 }
1257
1258 static u_int
1259 tmx86_get_longrun_status(u_int * frequency, u_int * voltage, u_int * percentage)
1260 {
1261 u_int regs[4];
1262
1263 mpintr_lock();
1264
1265 do_cpuid(0x80860007, regs);
1266 *frequency = regs[0];
1267 *voltage = regs[1];
1268 *percentage = regs[2];
1269
1270 mpintr_unlock();
1271 return (1);
1272 }
1273
1274 static u_int
1275 tmx86_set_longrun_mode(u_int mode)
1276 {
1277 union msrinfo msrinfo;
1278
1279 if (mode >= LONGRUN_MODE_UNKNOWN) {
1280 return (0);
1281 }
1282
1283 mpintr_lock();
1284
1285 /* Write LongRun mode values to Model Specific Register. */
1286 msrinfo.msr = rdmsr(MSR_TMx86_LONGRUN);
1287 msrinfo.regs[0] = LONGRUN_MODE_WRITE(msrinfo.regs[0],
1288 longrun_modes[mode][0]);
1289 msrinfo.regs[1] = LONGRUN_MODE_WRITE(msrinfo.regs[1],
1290 longrun_modes[mode][1]);
1291 wrmsr(MSR_TMx86_LONGRUN, msrinfo.msr);
1292
1293 /* Write LongRun mode flags to Model Specific Register. */
1294 msrinfo.msr = rdmsr(MSR_TMx86_LONGRUN_FLAGS);
1295 msrinfo.regs[0] = (msrinfo.regs[0] & ~0x01) | longrun_modes[mode][2];
1296 wrmsr(MSR_TMx86_LONGRUN_FLAGS, msrinfo.msr);
1297
1298 mpintr_unlock();
1299 return (1);
1300 }
1301
1302 static u_int crusoe_longrun;
1303 static u_int crusoe_frequency;
1304 static u_int crusoe_voltage;
1305 static u_int crusoe_percentage;
1306 static struct sysctl_ctx_list crusoe_sysctl_ctx;
1307 static struct sysctl_oid *crusoe_sysctl_tree;
1308
1309 static int
1310 tmx86_longrun_sysctl(SYSCTL_HANDLER_ARGS)
1311 {
1312 u_int mode;
1313 int error;
1314
1315 crusoe_longrun = tmx86_get_longrun_mode();
1316 mode = crusoe_longrun;
1317 error = sysctl_handle_int(oidp, &mode, 0, req);
1318 if (error || !req->newptr) {
1319 return (error);
1320 }
1321 if (mode >= LONGRUN_MODE_UNKNOWN) {
1322 error = EINVAL;
1323 return (error);
1324 }
1325 if (crusoe_longrun != mode) {
1326 crusoe_longrun = mode;
1327 tmx86_set_longrun_mode(crusoe_longrun);
1328 }
1329
1330 return (error);
1331 }
1332
1333 static int
1334 tmx86_status_sysctl(SYSCTL_HANDLER_ARGS)
1335 {
1336 u_int val;
1337 int error;
1338
1339 tmx86_get_longrun_status(&crusoe_frequency,
1340 &crusoe_voltage, &crusoe_percentage);
1341 val = *(u_int *)oidp->oid_arg1;
1342 error = sysctl_handle_int(oidp, &val, 0, req);
1343 return (error);
1344 }
1345
1346 static void
1347 setup_tmx86_longrun(void)
1348 {
1349 static int done = 0;
1350
1351 if (done)
1352 return;
1353 done++;
1354
1355 sysctl_ctx_init(&crusoe_sysctl_ctx);
1356 crusoe_sysctl_tree = SYSCTL_ADD_NODE(&crusoe_sysctl_ctx,
1357 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1358 "crusoe", CTLFLAG_RD, 0,
1359 "Transmeta Crusoe LongRun support");
1360 SYSCTL_ADD_PROC(&crusoe_sysctl_ctx, SYSCTL_CHILDREN(crusoe_sysctl_tree),
1361 OID_AUTO, "longrun", CTLTYPE_INT | CTLFLAG_RW,
1362 &crusoe_longrun, 0, tmx86_longrun_sysctl, "I",
1363 "LongRun mode [0-3]");
1364 SYSCTL_ADD_PROC(&crusoe_sysctl_ctx, SYSCTL_CHILDREN(crusoe_sysctl_tree),
1365 OID_AUTO, "frequency", CTLTYPE_INT | CTLFLAG_RD,
1366 &crusoe_frequency, 0, tmx86_status_sysctl, "I",
1367 "Current frequency (MHz)");
1368 SYSCTL_ADD_PROC(&crusoe_sysctl_ctx, SYSCTL_CHILDREN(crusoe_sysctl_tree),
1369 OID_AUTO, "voltage", CTLTYPE_INT | CTLFLAG_RD,
1370 &crusoe_voltage, 0, tmx86_status_sysctl, "I",
1371 "Current voltage (mV)");
1372 SYSCTL_ADD_PROC(&crusoe_sysctl_ctx, SYSCTL_CHILDREN(crusoe_sysctl_tree),
1373 OID_AUTO, "percentage", CTLTYPE_INT | CTLFLAG_RD,
1374 &crusoe_percentage, 0, tmx86_status_sysctl, "I",
1375 "Processing performance (%)");
1376 }
1377
1378 static void
1379 print_transmeta_info(void)
1380 {
1381 u_int regs[4], nreg = 0;
1382
1383 do_cpuid(0x80860000, regs);
1384 nreg = regs[0];
1385 if (nreg >= 0x80860001) {
1386 do_cpuid(0x80860001, regs);
1387 kprintf(" Processor revision %u.%u.%u.%u\n",
1388 (regs[1] >> 24) & 0xff,
1389 (regs[1] >> 16) & 0xff,
1390 (regs[1] >> 8) & 0xff,
1391 regs[1] & 0xff);
1392 }
1393 if (nreg >= 0x80860002) {
1394 do_cpuid(0x80860002, regs);
1395 kprintf(" Code Morphing Software revision %u.%u.%u-%u-%u\n",
1396 (regs[1] >> 24) & 0xff,
1397 (regs[1] >> 16) & 0xff,
1398 (regs[1] >> 8) & 0xff,
1399 regs[1] & 0xff,
1400 regs[2]);
1401 }
1402 if (nreg >= 0x80860006) {
1403 char info[65];
1404 do_cpuid(0x80860003, (u_int*) &info[0]);
1405 do_cpuid(0x80860004, (u_int*) &info[16]);
1406 do_cpuid(0x80860005, (u_int*) &info[32]);
1407 do_cpuid(0x80860006, (u_int*) &info[48]);
1408 info[64] = 0;
1409 kprintf(" %s\n", info);
1410 }
1411
1412 crusoe_longrun = tmx86_get_longrun_mode();
1413 tmx86_get_longrun_status(&crusoe_frequency,
1414 &crusoe_voltage, &crusoe_percentage);
1415 kprintf(" LongRun mode: %d <%dMHz %dmV %d%%>\n", crusoe_longrun,
1416 crusoe_frequency, crusoe_voltage, crusoe_percentage);
1417 }
1418
1419 void
1420 additional_cpu_info(const char *line)
1421 {
1422 int i;
1423
1424 if ((i = additional_cpu_info_count) < MAX_ADDITIONAL_INFO) {
1425 additional_cpu_info_ary[i] = line;
1426 ++additional_cpu_info_count;
1427 }
1428 }
1429
1430 static void
1431 print_via_padlock_info(void)
1432 {
1433 u_int regs[4];
1434
1435 /* Check for supported models. */
1436 switch (cpu_id & 0xff0) {
1437 case 0x690:
1438 if ((cpu_id & 0xf) < 3)
1439 return;
1440 case 0x6a0:
1441 case 0x6d0:
1442 break;
1443 default:
1444 return;
1445 }
1446
1447 do_cpuid(0xc0000000, regs);
1448 if (regs[0] >= 0xc0000001)
1449 do_cpuid(0xc0000001, regs);
1450 else
1451 return;
1452
1453 kprintf("\n VIA Padlock Features=0x%b", regs[3],
1454 "\020"
1455 "\003RNG" /* RNG */
1456 "\007AES" /* ACE */
1457 "\011AES-CTR" /* ACE2 */
1458 "\013SHA1,SHA256" /* PHE */
1459 "\015RSA" /* PMM */
1460 );
1461 }
DragonFly BSD