sys/platform/pc32/i386/identcpu.c

   1 /*-
   2  * Copyright (c) 1992 Terrence R. Lambert.
   3  * Copyright (c) 1982, 1987, 1990 The Regents of the University of California.
   4  * Copyright (c) 1997 KATO Takenori.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * William Jolitz.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
  39  * $FreeBSD: src/sys/i386/i386/identcpu.c,v 1.206 2009/11/12 10:59:00 nyan
  40  */
  41 #include "opt_cpu.h"
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/kernel.h>
  46 #include <sys/sysctl.h>
  47 #include <sys/lock.h>
  48
  49 #include <machine/asmacros.h>
  50 #include <machine/clock.h>
  51 #include <machine/cputypes.h>
  52 #include <machine/segments.h>
  53 #include <machine/specialreg.h>
  54 #include <machine/md_var.h>
  55 #include <machine/intr_machdep.h>
  56
  57 #define IDENTBLUE_CYRIX486      0
  58 #define IDENTBLUE_IBMCPU        1
  59 #define IDENTBLUE_CYRIXM2       2
  60
  61 /* XXX - should be in header file: */
  62 void printcpuinfo(void);
  63 void finishidentcpu(void);
  64 void earlysetcpuclass(void);
  65 #if defined(I586_CPU) && defined(CPU_WT_ALLOC)
  66 void    enable_K5_wt_alloc(void);
  67 void    enable_K6_wt_alloc(void);
  68 void    enable_K6_2_wt_alloc(void);
  69 #endif
  70 void panicifcpuunsupported(void);
  71
  72 static void identifycyrix(void);
  73 static void init_exthigh(void);
  74 static u_int find_cpu_vendor_id(void);
  75 static void print_AMD_info(void);
  76 static void print_INTEL_info(void);
  77 static void print_INTEL_TLB(u_int data);
  78 static void print_AMD_assoc(int i);
  79 static void print_transmeta_info(void);
  80 static void print_via_padlock_info(void);
  81
  82 int     cpu_class;
  83 u_int   cpu_exthigh;            /* Highest arg to extended CPUID */
  84 u_int   cyrix_did;              /* Device ID of Cyrix CPU */
  85 char machine[] = MACHINE;
  86 SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD,
  87     machine, 0, "Machine class");
  88
  89 static char cpu_model[128];
  90 SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD,
  91     cpu_model, 0, "Machine model");
  92
  93 static int hw_clockrate;
  94 SYSCTL_INT(_hw, OID_AUTO, clockrate, CTLFLAG_RD,
  95     &hw_clockrate, 0, "CPU instruction clock rate");
  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 8
 105
 106 static const char *cpu_brandtable[MAX_BRAND_INDEX + 1] = {
 107         NULL,                   /* No brand */
 108         "Intel Celeron",
 109         "Intel Pentium III",
 110         "Intel Pentium III Xeon",
 111         NULL,
 112         NULL,
 113         NULL,
 114         NULL,
 115         "Intel Pentium 4"
 116 };
 117
 118 static struct {
 119         char    *cpu_name;
 120         int     cpu_class;
 121 } i386_cpus[] = {
 122         { "Intel 80286",        CPUCLASS_286 },         /* CPU_286   */
 123         { "i386SX",             CPUCLASS_386 },         /* CPU_386SX */
 124         { "i386DX",             CPUCLASS_386 },         /* CPU_386   */
 125         { "i486SX",             CPUCLASS_486 },         /* CPU_486SX */
 126         { "i486DX",             CPUCLASS_486 },         /* CPU_486   */
 127         { "Pentium",            CPUCLASS_586 },         /* CPU_586   */
 128         { "Cyrix 486",          CPUCLASS_486 },         /* CPU_486DLC */
 129         { "Pentium Pro",        CPUCLASS_686 },         /* CPU_686 */
 130         { "Cyrix 5x86",         CPUCLASS_486 },         /* CPU_M1SC */
 131         { "Cyrix 6x86",         CPUCLASS_486 },         /* CPU_M1 */
 132         { "Blue Lightning",     CPUCLASS_486 },         /* CPU_BLUE */
 133         { "Cyrix 6x86MX",       CPUCLASS_686 },         /* CPU_M2 */
 134         { "NexGen 586",         CPUCLASS_386 },         /* CPU_NX586 (XXX) */
 135         { "Cyrix 486S/DX",      CPUCLASS_486 },         /* CPU_CY486DX */
 136         { "Pentium II",         CPUCLASS_686 },         /* CPU_PII */
 137         { "Pentium III",        CPUCLASS_686 },         /* CPU_PIII */
 138         { "Pentium 4",          CPUCLASS_686 },         /* CPU_P4 */
 139 };
 140
 141 static struct {
 142         char    *vendor;
 143         u_int   vendor_id;
 144 } cpu_vendors[] = {
 145         { INTEL_VENDOR_ID,      CPU_VENDOR_INTEL },     /* GenuineIntel */
 146         { AMD_VENDOR_ID,        CPU_VENDOR_AMD },       /* AuthenticAMD */
 147         { CENTAUR_VENDOR_ID,    CPU_VENDOR_CENTAUR },   /* CentaurHauls */
 148         { NSC_VENDOR_ID,        CPU_VENDOR_NSC },       /* Geode by NSC */
 149         { CYRIX_VENDOR_ID,      CPU_VENDOR_CYRIX },     /* CyrixInstead */
 150         { TRANSMETA_VENDOR_ID,  CPU_VENDOR_TRANSMETA }, /* GenuineTMx86 */
 151         { SIS_VENDOR_ID,        CPU_VENDOR_SIS },       /* SiS SiS SiS  */
 152         { UMC_VENDOR_ID,        CPU_VENDOR_UMC },       /* UMC UMC UMC  */
 153         { NEXGEN_VENDOR_ID,     CPU_VENDOR_NEXGEN },    /* NexGenDriven */
 154         { RISE_VENDOR_ID,       CPU_VENDOR_RISE },      /* RiseRiseRise */
 155 #if 0
 156         /* XXX CPUID 8000_0000h and 8086_0000h, not 0000_0000h */
 157         { "TransmetaCPU",       CPU_VENDOR_TRANSMETA },
 158 #endif
 159 };
 160
 161 int cpu_cores;
 162 int cpu_logical;
 163
 164 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
 165 int has_f00f_bug = 0;           /* Initialized so that it can be patched. */
 166 #endif
 167
 168 static void
 169 init_exthigh(void)
 170 {
 171         static int done = 0;
 172         u_int regs[4];
 173
 174         if (done == 0) {
 175                 if (cpu_high > 0 &&
 176                     (cpu_vendor_id == CPU_VENDOR_INTEL ||
 177                     cpu_vendor_id == CPU_VENDOR_AMD ||
 178                     cpu_vendor_id == CPU_VENDOR_TRANSMETA ||
 179                     cpu_vendor_id == CPU_VENDOR_CENTAUR ||
 180                     cpu_vendor_id == CPU_VENDOR_NSC)) {
 181                         do_cpuid(0x80000000, regs);
 182                         if (regs[0] >= 0x80000000)
 183                                 cpu_exthigh = regs[0];
 184                 }
 185
 186                 done = 1;
 187         }
 188 }
 189
 190 void
 191 printcpuinfo(void)
 192 {
 193         u_int regs[4], i;
 194         char *brand;
 195
 196         cpu_class = i386_cpus[cpu].cpu_class;
 197         kprintf("CPU: ");
 198         strncpy(cpu_model, i386_cpus[cpu].cpu_name, sizeof (cpu_model));
 199
 200         /* Check for extended CPUID information and a processor name. */
 201         init_exthigh();
 202         if (cpu_exthigh >= 0x80000004) {
 203                 brand = cpu_brand;
 204                 for (i = 0x80000002; i < 0x80000005; i++) {
 205                         do_cpuid(i, regs);
 206                         memcpy(brand, regs, sizeof(regs));
 207                         brand += sizeof(regs);
 208                 }
 209         }
 210
 211         if (cpu_vendor_id == CPU_VENDOR_INTEL) {
 212                 if ((cpu_id & 0xf00) > 0x300) {
 213                         u_int brand_index;
 214
 215                         cpu_model[0] = '\0';
 216
 217                         switch (cpu_id & 0x3000) {
 218                         case 0x1000:
 219                                 strcpy(cpu_model, "Overdrive ");
 220                                 break;
 221                         case 0x2000:
 222                                 strcpy(cpu_model, "Dual ");
 223                                 break;
 224                         }
 225
 226                         switch (cpu_id & 0xf00) {
 227                         case 0x400:
 228                                 strcat(cpu_model, "i486 ");
 229                                 /* Check the particular flavor of 486 */
 230                                 switch (cpu_id & 0xf0) {
 231                                 case 0x00:
 232                                 case 0x10:
 233                                         strcat(cpu_model, "DX");
 234                                         break;
 235                                 case 0x20:
 236                                         strcat(cpu_model, "SX");
 237                                         break;
 238                                 case 0x30:
 239                                         strcat(cpu_model, "DX2");
 240                                         break;
 241                                 case 0x40:
 242                                         strcat(cpu_model, "SL");
 243                                         break;
 244                                 case 0x50:
 245                                         strcat(cpu_model, "SX2");
 246                                         break;
 247                                 case 0x70:
 248                                         strcat(cpu_model,
 249                                             "DX2 Write-Back Enhanced");
 250                                         break;
 251                                 case 0x80:
 252                                         strcat(cpu_model, "DX4");
 253                                         break;
 254                                 }
 255                                 break;
 256                         case 0x500:
 257                                 /* Check the particular flavor of 586 */
 258                                 strcat(cpu_model, "Pentium");
 259                                 switch (cpu_id & 0xf0) {
 260                                 case 0x00:
 261                                         strcat(cpu_model, " A-step");
 262                                         break;
 263                                 case 0x10:
 264                                         strcat(cpu_model, "/P5");
 265                                         break;
 266                                 case 0x20:
 267                                         strcat(cpu_model, "/P54C");
 268                                         break;
 269                                 case 0x30:
 270                                         strcat(cpu_model, "/P24T");
 271                                         break;
 272                                 case 0x40:
 273                                         strcat(cpu_model, "/P55C");
 274                                         break;
 275                                 case 0x70:
 276                                         strcat(cpu_model, "/P54C");
 277                                         break;
 278                                 case 0x80:
 279                                         strcat(cpu_model, "/P55C (quarter-micron)");
 280                                         break;
 281                                 default:
 282                                         /* nothing */
 283                                         break;
 284                                 }
 285 #if defined(I586_CPU) && !defined(NO_F00F_HACK)
 286                                 /*
 287                                  * XXX - If/when Intel fixes the bug, this
 288                                  * should also check the version of the
 289                                  * CPU, not just that it's a Pentium.
 290                                  */
 291                                 has_f00f_bug = 1;
 292 #endif
 293                                 break;
 294                         case 0x600:
 295                                 /* Check the particular flavor of 686 */
 296                                 switch (cpu_id & 0xf0) {
 297                                 case 0x00:
 298                                         strcat(cpu_model, "Pentium Pro A-step");
 299                                         break;
 300                                 case 0x10:
 301                                         strcat(cpu_model, "Pentium Pro");
 302                                         break;
 303                                 case 0x30:
 304                                 case 0x50:
 305                                 case 0x60:
 306                                         strcat(cpu_model,
 307                                 "Pentium II/Pentium II Xeon/Celeron");
 308                                         cpu = CPU_PII;
 309                                         break;
 310                                 case 0x70:
 311                                 case 0x80:
 312                                 case 0xa0:
 313                                 case 0xb0:
 314                                         strcat(cpu_model,
 315                                         "Pentium III/Pentium III Xeon/Celeron");
 316                                         cpu = CPU_PIII;
 317                                         break;
 318                                 default:
 319                                         strcat(cpu_model, "Unknown 80686");
 320                                         break;
 321                                 }
 322                                 break;
 323                         case 0xf00:
 324                                 strcat(cpu_model, "Pentium 4");
 325                                 cpu = CPU_P4;
 326                                 break;
 327                         default:
 328                                 strcat(cpu_model, "unknown");
 329                                 break;
 330                         }
 331
 332                         /*
 333                          * If we didn't get a brand name from the extended
 334                          * CPUID, try to look it up in the brand table.
 335                          */
 336                         if (cpu_high > 0 && *cpu_brand == '\0') {
 337                                 brand_index = cpu_procinfo & CPUID_BRAND_INDEX;
 338                                 if (brand_index <= MAX_BRAND_INDEX &&
 339                                     cpu_brandtable[brand_index] != NULL)
 340                                         strcpy(cpu_brand,
 341                                             cpu_brandtable[brand_index]);
 342                         }
 343                 }
 344         } else if (cpu_vendor_id == CPU_VENDOR_AMD) {
 345                 /*
 346                  * Values taken from AMD Processor Recognition
 347                  * http://www.amd.com/K6/k6docs/pdf/20734g.pdf
 348                  * (also describes ``Features'' encodings.
 349                  */
 350                 strcpy(cpu_model, "AMD ");
 351                 switch (cpu_id & 0xFF0) {
 352                 case 0x410:
 353                         strcat(cpu_model, "Standard Am486DX");
 354                         break;
 355                 case 0x430:
 356                         strcat(cpu_model, "Enhanced Am486DX2 Write-Through");
 357                         break;
 358                 case 0x470:
 359                         strcat(cpu_model, "Enhanced Am486DX2 Write-Back");
 360                         break;
 361                 case 0x480:
 362                         strcat(cpu_model, "Enhanced Am486DX4/Am5x86 Write-Through");
 363                         break;
 364                 case 0x490:
 365                         strcat(cpu_model, "Enhanced Am486DX4/Am5x86 Write-Back");
 366                         break;
 367                 case 0x4E0:
 368                         strcat(cpu_model, "Am5x86 Write-Through");
 369                         break;
 370                 case 0x4F0:
 371                         strcat(cpu_model, "Am5x86 Write-Back");
 372                         break;
 373                 case 0x500:
 374                         strcat(cpu_model, "K5 model 0");
 375                         tsc_is_broken = 1;
 376                         break;
 377                 case 0x510:
 378                         strcat(cpu_model, "K5 model 1");
 379                         break;
 380                 case 0x520:
 381                         strcat(cpu_model, "K5 PR166 (model 2)");
 382                         break;
 383                 case 0x530:
 384                         strcat(cpu_model, "K5 PR200 (model 3)");
 385                         break;
 386                 case 0x560:
 387                         strcat(cpu_model, "K6");
 388                         break;
 389                 case 0x570:
 390                         strcat(cpu_model, "K6 266 (model 1)");
 391                         break;
 392                 case 0x580:
 393                         strcat(cpu_model, "K6-2");
 394                         break;
 395                 case 0x590:
 396                         strcat(cpu_model, "K6-III");
 397                         break;
 398                 case 0x5a0:
 399                         strcat(cpu_model, "Geode LX");
 400                         /*
 401                          * Make sure the TSC runs through suspension,
 402                          * otherwise we can't use it as timecounter
 403                          */
 404                         wrmsr(0x1900, rdmsr(0x1900) | 0x20ULL);
 405                         break;
 406                 default:
 407                         strcat(cpu_model, "Unknown");
 408                         break;
 409                 }
 410 #if defined(I586_CPU) && defined(CPU_WT_ALLOC)
 411                 if ((cpu_id & 0xf00) == 0x500) {
 412                         if (((cpu_id & 0x0f0) > 0)
 413                             && ((cpu_id & 0x0f0) < 0x60)
 414                             && ((cpu_id & 0x00f) > 3))
 415                                 enable_K5_wt_alloc();
 416                         else if (((cpu_id & 0x0f0) > 0x80)
 417                                  || (((cpu_id & 0x0f0) == 0x80)
 418                                      && (cpu_id & 0x00f) > 0x07))
 419                                 enable_K6_2_wt_alloc();
 420                         else if ((cpu_id & 0x0f0) > 0x50)
 421                                 enable_K6_wt_alloc();
 422                 }
 423 #endif
 424         } else if (cpu_vendor_id == CPU_VENDOR_CYRIX) {
 425                 strcpy(cpu_model, "Cyrix ");
 426                 switch (cpu_id & 0xff0) {
 427                 case 0x440:
 428                         strcat(cpu_model, "MediaGX");
 429                         break;
 430                 case 0x520:
 431                         strcat(cpu_model, "6x86");
 432                         break;
 433                 case 0x540:
 434                         cpu_class = CPUCLASS_586;
 435                         strcat(cpu_model, "GXm");
 436                         break;
 437                 case 0x600:
 438                         strcat(cpu_model, "6x86MX");
 439                         break;
 440                 default:
 441                         /*
 442                          * Even though CPU supports the cpuid
 443                          * instruction, it can be disabled.
 444                          * Therefore, this routine supports all Cyrix
 445                          * CPUs.
 446                          */
 447                         switch (cyrix_did & 0xf0) {
 448                         case 0x00:
 449                                 switch (cyrix_did & 0x0f) {
 450                                 case 0x00:
 451                                         strcat(cpu_model, "486SLC");
 452                                         break;
 453                                 case 0x01:
 454                                         strcat(cpu_model, "486DLC");
 455                                         break;
 456                                 case 0x02:
 457                                         strcat(cpu_model, "486SLC2");
 458                                         break;
 459                                 case 0x03:
 460                                         strcat(cpu_model, "486DLC2");
 461                                         break;
 462                                 case 0x04:
 463                                         strcat(cpu_model, "486SRx");
 464                                         break;
 465                                 case 0x05:
 466                                         strcat(cpu_model, "486DRx");
 467                                         break;
 468                                 case 0x06:
 469                                         strcat(cpu_model, "486SRx2");
 470                                         break;
 471                                 case 0x07:
 472                                         strcat(cpu_model, "486DRx2");
 473                                         break;
 474                                 case 0x08:
 475                                         strcat(cpu_model, "486SRu");
 476                                         break;
 477                                 case 0x09:
 478                                         strcat(cpu_model, "486DRu");
 479                                         break;
 480                                 case 0x0a:
 481                                         strcat(cpu_model, "486SRu2");
 482                                         break;
 483                                 case 0x0b:
 484                                         strcat(cpu_model, "486DRu2");
 485                                         break;
 486                                 default:
 487                                         strcat(cpu_model, "Unknown");
 488                                         break;
 489                                 }
 490                                 break;
 491                         case 0x10:
 492                                 switch (cyrix_did & 0x0f) {
 493                                 case 0x00:
 494                                         strcat(cpu_model, "486S");
 495                                         break;
 496                                 case 0x01:
 497                                         strcat(cpu_model, "486S2");
 498                                         break;
 499                                 case 0x02:
 500                                         strcat(cpu_model, "486Se");
 501                                         break;
 502                                 case 0x03:
 503                                         strcat(cpu_model, "486S2e");
 504                                         break;
 505                                 case 0x0a:
 506                                         strcat(cpu_model, "486DX");
 507                                         break;
 508                                 case 0x0b:
 509                                         strcat(cpu_model, "486DX2");
 510                                         break;
 511                                 case 0x0f:
 512                                         strcat(cpu_model, "486DX4");
 513                                         break;
 514                                 default:
 515                                         strcat(cpu_model, "Unknown");
 516                                         break;
 517                                 }
 518                                 break;
 519                         case 0x20:
 520                                 if ((cyrix_did & 0x0f) < 8)
 521                                         strcat(cpu_model, "6x86");      /* Where did you get it? */
 522                                 else
 523                                         strcat(cpu_model, "5x86");
 524                                 break;
 525                         case 0x30:
 526                                 strcat(cpu_model, "6x86");
 527                                 break;
 528                         case 0x40:
 529                                 if ((cyrix_did & 0xf000) == 0x3000) {
 530                                         cpu_class = CPUCLASS_586;
 531                                         strcat(cpu_model, "GXm");
 532                                 } else
 533                                         strcat(cpu_model, "MediaGX");
 534                                 break;
 535                         case 0x50:
 536                                 strcat(cpu_model, "6x86MX");
 537                                 break;
 538                         case 0xf0:
 539                                 switch (cyrix_did & 0x0f) {
 540                                 case 0x0d:
 541                                         strcat(cpu_model, "Overdrive CPU");
 542                                         break;
 543                                 case 0x0e:
 544                                         strcpy(cpu_model, "Texas Instruments 486SXL");
 545                                         break;
 546                                 case 0x0f:
 547                                         strcat(cpu_model, "486SLC/DLC");
 548                                         break;
 549                                 default:
 550                                         strcat(cpu_model, "Unknown");
 551                                         break;
 552                                 }
 553                                 break;
 554                         default:
 555                                 strcat(cpu_model, "Unknown");
 556                                 break;
 557                         }
 558                         break;
 559                 }
 560         } else if (cpu_vendor_id == CPU_VENDOR_RISE) {
 561                 strcpy(cpu_model, "Rise ");
 562                 switch (cpu_id & 0xff0) {
 563                 case 0x500:
 564                         strcat(cpu_model, "mP6");
 565                         break;
 566                 default:
 567                         strcat(cpu_model, "Unknown");
 568                 }
 569         } else if (cpu_vendor_id == CPU_VENDOR_CENTAUR) {
 570                 switch (cpu_id & 0xff0) {
 571                 case 0x540:
 572                         strcpy(cpu_model, "IDT WinChip C6");
 573                         tsc_is_broken = 1;
 574                         break;
 575                 case 0x580:
 576                         strcpy(cpu_model, "IDT WinChip 2");
 577                         break;
 578                 case 0x660:
 579                         strcpy(cpu_model, "VIA C3 Samuel");
 580                         break;
 581                 case 0x670:
 582                         if (cpu_id & 0x8)
 583                                 strcpy(cpu_model, "VIA C3 Ezra");
 584                         else
 585                                 strcpy(cpu_model, "VIA C3 Samuel 2");
 586                         break;
 587                 case 0x680:
 588                         strcpy(cpu_model, "VIA C3 Ezra-T");
 589                         break;
 590                 case 0x690:
 591                         strcpy(cpu_model, "VIA C3 Nehemiah");
 592                         break;
 593                 case 0x6a0:
 594                 case 0x6d0:
 595                         strcpy(cpu_model, "VIA C7 Esther");
 596                         break;
 597                 case 0x6f0:
 598                         strcpy(cpu_model, "VIA Nano");
 599                         break;
 600                 default:
 601                         strcpy(cpu_model, "VIA/IDT Unknown");
 602                 }
 603         } else if (cpu_vendor_id == CPU_VENDOR_IBM) {
 604                 strcpy(cpu_model, "Blue Lightning CPU");
 605         } else if (cpu_vendor_id == CPU_VENDOR_NSC) {
 606                 switch (cpu_id & 0xfff) {
 607                 case 0x540:
 608                         strcpy(cpu_model, "Geode SC1100");
 609                         cpu = CPU_GEODE1100;
 610                         tsc_is_broken = 1;
 611                         break;
 612                 default:
 613                         strcpy(cpu_model, "Geode/NSC unknown");
 614                         break;
 615                 }
 616         }
 617
 618         /*
 619          * Replace cpu_model with cpu_brand minus leading spaces if
 620          * we have one.
 621          */
 622         brand = cpu_brand;
 623         while (*brand == ' ')
 624                 ++brand;
 625         if (*brand != '\0')
 626                 strcpy(cpu_model, brand);
 627
 628         kprintf("%s (", cpu_model);
 629         switch(cpu_class) {
 630         case CPUCLASS_286:
 631                 kprintf("286");
 632                 break;
 633         case CPUCLASS_386:
 634                 kprintf("386");
 635                 break;
 636 #if defined(I486_CPU)
 637         case CPUCLASS_486:
 638                 kprintf("486");
 639                 /* bzero_vector = i486_bzero; */
 640                 break;
 641 #endif
 642 #if defined(I586_CPU)
 643         case CPUCLASS_586:
 644                 hw_clockrate = (tsc_frequency + 5000) / 1000000;
 645                 kprintf("%jd.%02d-MHz ",
 646                        (intmax_t)(tsc_frequency + 4999) / 1000000,
 647                        (u_int)((tsc_frequency + 4999) / 10000) % 100);
 648                 kprintf("586");
 649                 break;
 650 #endif
 651 #if defined(I686_CPU)
 652         case CPUCLASS_686:
 653                 hw_clockrate = (tsc_frequency + 5000) / 1000000;
 654                 kprintf("%jd.%02d-MHz ",
 655                        (intmax_t)(tsc_frequency + 4999) / 1000000,
 656                        (u_int)((tsc_frequency + 4999) / 10000) % 100);
 657                 kprintf("686");
 658                 break;
 659 #endif
 660         default:
 661                 kprintf("Unknown");     /* will panic below... */
 662         }
 663         kprintf("-class CPU)\n");
 664         if(*cpu_vendor)
 665                 kprintf("  Origin = \"%s\"",cpu_vendor);
 666         if(cpu_id)
 667                 kprintf("  Id = 0x%x", cpu_id);
 668
 669         if (cpu_vendor_id == CPU_VENDOR_INTEL ||
 670             cpu_vendor_id == CPU_VENDOR_AMD ||
 671             cpu_vendor_id == CPU_VENDOR_TRANSMETA ||
 672             cpu_vendor_id == CPU_VENDOR_RISE ||
 673             cpu_vendor_id == CPU_VENDOR_CENTAUR ||
 674             cpu_vendor_id == CPU_VENDOR_NSC ||
 675                 (cpu_vendor_id == CPU_VENDOR_CYRIX &&
 676                  ((cpu_id & 0xf00) > 0x500))) {
 677                 kprintf("  Stepping = %u", cpu_id & 0xf);
 678                 if (cpu_vendor_id == CPU_VENDOR_CYRIX)
 679                         kprintf("  DIR=0x%04x", cyrix_did);
 680                 if (cpu_high > 0) {
 681                         u_int cmp = 1, htt = 1;
 682
 683                         /*
 684                          * Here we should probably set up flags indicating
 685                          * whether or not various features are available.
 686                          * The interesting ones are probably VME, PSE, PAE,
 687                          * and PGE.  The code already assumes without bothering
 688                          * to check that all CPUs >= Pentium have a TSC and
 689                          * MSRs.
 690                          */
 691                         kprintf("\n  Features=0x%b", cpu_feature,
 692                         "\020"
 693                         "\001FPU"       /* Integral FPU */
 694                         "\002VME"       /* Extended VM86 mode support */
 695                         "\003DE"        /* Debugging Extensions (CR4.DE) */
 696                         "\004PSE"       /* 4MByte page tables */
 697                         "\005TSC"       /* Timestamp counter */
 698                         "\006MSR"       /* Machine specific registers */
 699                         "\007PAE"       /* Physical address extension */
 700                         "\010MCE"       /* Machine Check support */
 701                         "\011CX8"       /* CMPEXCH8 instruction */
 702                         "\012APIC"      /* SMP local APIC */
 703                         "\013oldMTRR"   /* Previous implementation of MTRR */
 704                         "\014SEP"       /* Fast System Call */
 705                         "\015MTRR"      /* Memory Type Range Registers */
 706                         "\016PGE"       /* PG_G (global bit) support */
 707                         "\017MCA"       /* Machine Check Architecture */
 708                         "\020CMOV"      /* CMOV instruction */
 709                         "\021PAT"       /* Page attributes table */
 710                         "\022PSE36"     /* 36 bit address space support */
 711                         "\023PN"        /* Processor Serial number */
 712                         "\024CLFLUSH"   /* Has the CLFLUSH instruction */
 713                         "\025<b20>"
 714                         "\026DTS"       /* Debug Trace Store */
 715                         "\027ACPI"      /* ACPI support */
 716                         "\030MMX"       /* MMX instructions */
 717                         "\031FXSR"      /* FXSAVE/FXRSTOR */
 718                         "\032SSE"       /* Streaming SIMD Extensions */
 719                         "\033SSE2"      /* Streaming SIMD Extensions #2 */
 720                         "\034SS"        /* Self snoop */
 721                         "\035HTT"       /* Hyperthreading (see EBX bit 16-23) */
 722                         "\036TM"        /* Thermal Monitor clock slowdown */
 723                         "\037IA64"      /* CPU can execute IA64 instructions */
 724                         "\040PBE"       /* Pending Break Enable */
 725                         );
 726
 727                         if (cpu_feature2 != 0) {
 728                                 kprintf("\n  Features2=0x%b", cpu_feature2,
 729                                 "\020"
 730                                 "\001SSE3"      /* SSE3 */
 731                                 "\002PCLMULQDQ" /* Carry-Less Mul Quadword */
 732                                 "\003DTES64"    /* 64-bit Debug Trace */
 733                                 "\004MON"       /* MONITOR/MWAIT Instructions */
 734                                 "\005DS_CPL"    /* CPL Qualified Debug Store */
 735                                 "\006VMX"       /* Virtual Machine Extensions */
 736                                 "\007SMX"       /* Safer Mode Extensions */
 737                                 "\010EST"       /* Enhanced SpeedStep */
 738                                 "\011TM2"       /* Thermal Monitor 2 */
 739                                 "\012SSSE3"     /* SSSE3 */
 740                                 "\013CNXT-ID"   /* L1 context ID available */
 741                                 "\014<b11>"
 742                                 "\015<b12>"
 743                                 "\016CX16"      /* CMPXCHG16B Instruction */
 744                                 "\017xTPR"      /* Send Task Priority Messages */
 745                                 "\020PDCM"      /* Perf/Debug Capability MSR */
 746                                 "\021<b16>"
 747                                 "\022PCID"      /* Process-context Identifiers */
 748                                 "\023DCA"       /* Direct Cache Access */
 749                                 "\024SSE4.1"
 750                                 "\025SSE4.2"
 751                                 "\026x2APIC"    /* xAPIC Extensions */
 752                                 "\027MOVBE"     /* MOVBE Instruction */
 753                                 "\030POPCNT"
 754                                 "\031TSC-DL"    /* TSC Deadline */
 755                                 "\032AESNI"     /* AES Crypto */
 756                                 "\033XSAVE"
 757                                 "\034OSXSAVE"
 758                                 "\035AVX"       /* Advanced Vector Extensions */
 759                                 "\036<b29>"
 760                                 "\037<b30>"
 761                                 "\040VMM"       /* Running on a hypervisor */
 762                                 );
 763                         }
 764
 765                         /*
 766                          * AMD64 Architecture Programmer's Manual Volume 3:
 767                          * General-Purpose and System Instructions
 768                          * http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24594.pdf
 769                          *
 770                          * IA-32 Intel Architecture Software Developer's Manual,
 771                          * Volume 2A: Instruction Set Reference, A-M
 772                          * ftp://download.intel.com/design/Pentium4/manuals/25366617.pdf
 773                          */
 774                         if (amd_feature != 0) {
 775                                 kprintf("\n  AMD Features=0x%b", amd_feature,
 776                                 "\020"          /* in hex */
 777                                 "\001<s0>"      /* Same */
 778                                 "\002<s1>"      /* Same */
 779                                 "\003<s2>"      /* Same */
 780                                 "\004<s3>"      /* Same */
 781                                 "\005<s4>"      /* Same */
 782                                 "\006<s5>"      /* Same */
 783                                 "\007<s6>"      /* Same */
 784                                 "\010<s7>"      /* Same */
 785                                 "\011<s8>"      /* Same */
 786                                 "\012<s9>"      /* Same */
 787                                 "\013<b10>"     /* Undefined */
 788                                 "\014SYSCALL"   /* Have SYSCALL/SYSRET */
 789                                 "\015<s12>"     /* Same */
 790                                 "\016<s13>"     /* Same */
 791                                 "\017<s14>"     /* Same */
 792                                 "\020<s15>"     /* Same */
 793                                 "\021<s16>"     /* Same */
 794                                 "\022<s17>"     /* Same */
 795                                 "\023<b18>"     /* Reserved, unknown */
 796                                 "\024MP"        /* Multiprocessor Capable */
 797                                 "\025NX"        /* Has EFER.NXE, NX */
 798                                 "\026<b21>"     /* Undefined */
 799                                 "\027MMX+"      /* AMD MMX Extensions */
 800                                 "\030<s23>"     /* Same */
 801                                 "\031<s24>"     /* Same */
 802                                 "\032FFXSR"     /* Fast FXSAVE/FXRSTOR */
 803                                 "\033Page1GB"   /* 1-GB large page support */
 804                                 "\034RDTSCP"    /* RDTSCP */
 805                                 "\035<b28>"     /* Undefined */
 806                                 "\036LM"        /* 64 bit long mode */
 807                                 "\0373DNow!+"   /* AMD 3DNow! Extensions */
 808                                 "\0403DNow!"    /* AMD 3DNow! */
 809                                 );
 810                         }
 811
 812                         if (amd_feature2 != 0) {
 813                                 kprintf("\n  AMD Features2=0x%b", amd_feature2,
 814                                 "\020"
 815                                 "\001LAHF"      /* LAHF/SAHF in long mode */
 816                                 "\002CMP"       /* CMP legacy */
 817                                 "\003SVM"       /* Secure Virtual Mode */
 818                                 "\004ExtAPIC"   /* Extended APIC register */
 819                                 "\005CR8"       /* CR8 in legacy mode */
 820                                 "\006ABM"       /* LZCNT instruction */
 821                                 "\007SSE4A"     /* SSE4A */
 822                                 "\010MAS"       /* Misaligned SSE mode */
 823                                 "\011Prefetch"  /* 3DNow! Prefetch/PrefetchW */
 824                                 "\012OSVW"      /* OS visible workaround */
 825                                 "\013IBS"       /* Instruction based sampling */
 826                                 "\014SSE5"      /* SSE5 */
 827                                 "\015SKINIT"    /* SKINIT/STGI */
 828                                 "\016WDT"       /* Watchdog timer */
 829                                 "\017<b14>"
 830                                 "\020<b15>"
 831                                 "\021<b16>"
 832                                 "\022<b17>"
 833                                 "\023<b18>"
 834                                 "\024<b19>"
 835                                 "\025<b20>"
 836                                 "\026<b21>"
 837                                 "\027<b22>"
 838                                 "\030<b23>"
 839                                 "\031<b24>"
 840                                 "\032<b25>"
 841                                 "\033<b26>"
 842                                 "\034<b27>"
 843                                 "\035<b28>"
 844                                 "\036<b29>"
 845                                 "\037<b30>"
 846                                 "\040<b31>"
 847                                 );
 848                         }
 849
 850                         if (cpu_vendor_id == CPU_VENDOR_CENTAUR)
 851                                 print_via_padlock_info();
 852
 853                         if ((cpu_feature & CPUID_HTT) &&
 854                             cpu_vendor_id == CPU_VENDOR_AMD)
 855                                 cpu_feature &= ~CPUID_HTT;
 856
 857                         /*
 858                          * If this CPU supports HTT or CMP then mention the
 859                          * number of physical/logical cores it contains.
 860                          */
 861                         if (cpu_feature & CPUID_HTT)
 862                                 htt = (cpu_procinfo & CPUID_HTT_CORES) >> 16;
 863                         if (cpu_vendor_id == CPU_VENDOR_AMD &&
 864                             (amd_feature2 & AMDID2_CMP))
 865                                 cmp = (cpu_procinfo2 & AMDID_CMP_CORES) + 1;
 866                         else if (cpu_vendor_id == CPU_VENDOR_INTEL &&
 867                             (cpu_high >= 4)) {
 868                                 cpuid_count(4, 0, regs);
 869                                 if ((regs[0] & 0x1f) != 0)
 870                                         cmp = ((regs[0] >> 26) & 0x3f) + 1;
 871                         }
 872                         cpu_cores = cmp;
 873                         cpu_logical = htt / cmp;
 874                         if (cmp > 1)
 875                                 kprintf("\n  Cores per package: %d", cmp);
 876                         if ((htt / cmp) > 1)
 877                                 kprintf("\n  Logical CPUs per core: %d",
 878                                     cpu_logical);
 879 #if 0
 880                         /*
 881                          * If this CPU supports P-state invariant TSC then
 882                          * mention the capability.
 883                          */
 884                         switch (cpu_vendor_id) {
 885                         case CPU_VENDOR_AMD:
 886                                 if ((amd_pminfo & AMDPM_TSC_INVARIANT) ||
 887                                     CPUID_TO_FAMILY(cpu_id) >= 0x10 ||
 888                                     cpu_id == 0x60fb2)
 889                                         tsc_is_invariant = 1;
 890                                 break;
 891                         case CPU_VENDOR_INTEL:
 892                                 if ((amd_pminfo & AMDPM_TSC_INVARIANT) ||
 893                                     (CPUID_TO_FAMILY(cpu_id) == 0x6 &&
 894                                     CPUID_TO_MODEL(cpu_id) >= 0xe) ||
 895                                     (CPUID_TO_FAMILY(cpu_id) == 0xf &&
 896                                     CPUID_TO_MODEL(cpu_id) >= 0x3))
 897                                         tsc_is_invariant = 1;
 898                                 break;
 899                         case CPU_VENDOR_CENTAUR:
 900                                 if (CPUID_TO_FAMILY(cpu_id) == 0x6 &&
 901                                     CPUID_TO_MODEL(cpu_id) >= 0xf &&
 902                                     (rdmsr(0x1203) & 0x100000000ULL) == 0)
 903                                         tsc_is_invariant = 1;
 904                                 break;
 905                         }
 906                         if (tsc_is_invariant)
 907                                 kprintf("\n  TSC: P-state invariant");
 908 #endif
 909
 910                 }
 911         } else if (cpu_vendor_id == CPU_VENDOR_CYRIX) {
 912                 kprintf("  DIR=0x%04x", cyrix_did);
 913                 kprintf("  Stepping=%u", (cyrix_did & 0xf000) >> 12);
 914                 kprintf("  Revision=%u", (cyrix_did & 0x0f00) >> 8);
 915 #ifndef CYRIX_CACHE_REALLY_WORKS
 916                 if (cpu == CPU_M1 && (cyrix_did & 0xff00) < 0x1700)
 917                         kprintf("\n  CPU cache: write-through mode");
 918 #endif
 919         }
 920
 921         /* Avoid ugly blank lines: only print newline when we have to. */
 922         if (*cpu_vendor || cpu_id)
 923                 kprintf("\n");
 924
 925         for (i = 0; i < additional_cpu_info_count; ++i) {
 926                 kprintf("  %s\n", additional_cpu_info_ary[i]);
 927         }
 928
 929         if (!bootverbose)
 930                 return;
 931
 932         if (cpu_vendor_id == CPU_VENDOR_AMD)
 933                 print_AMD_info();
 934         else if (cpu_vendor_id == CPU_VENDOR_INTEL)
 935                 print_INTEL_info();
 936         else if (cpu_vendor_id == CPU_VENDOR_TRANSMETA)
 937                 print_transmeta_info();
 938
 939 #ifdef CPU_HAS_SSE2
 940         kprintf("Use SSE2 (lfence, mfence)\n");
 941 #endif
 942 #ifdef CPU_HAS_FXSR
 943         kprintf("Use FXSR (sfence)\n");
 944 #endif
 945 }
 946
 947 void
 948 panicifcpuunsupported(void)
 949 {
 950
 951 #if !defined(lint)
 952 #if !defined(I486_CPU) && !defined(I586_CPU) && !defined(I686_CPU)
 953 #error This kernel is not configured for one of the supported CPUs
 954 #endif
 955 #else /* lint */
 956 #endif /* lint */
 957         /*
 958          * Now that we have told the user what they have,
 959          * let them know if that machine type isn't configured.
 960          */
 961         switch (cpu_class) {
 962         case CPUCLASS_286:      /* a 286 should not make it this far, anyway */
 963         case CPUCLASS_386:
 964 #if !defined(I486_CPU)
 965         case CPUCLASS_486:
 966 #endif
 967 #if !defined(I586_CPU)
 968         case CPUCLASS_586:
 969 #endif
 970 #if !defined(I686_CPU)
 971         case CPUCLASS_686:
 972 #endif
 973                 panic("CPU class not configured");
 974         default:
 975                 break;
 976         }
 977 }
 978
 979
 980 static  volatile u_int trap_by_rdmsr;
 981
 982 /*
 983  * Special exception 6 handler.
 984  * The rdmsr instruction generates invalid opcodes fault on 486-class
 985  * Cyrix CPU.  Stacked eip register points the rdmsr instruction in the
 986  * function identblue() when this handler is called.  Stacked eip should
 987  * be advanced.
 988  */
 989 inthand_t       bluetrap6;
 990
 991 __asm
 992 ("                                                                      \n\
 993         .text                                                           \n\
 994         .p2align 2,0x90                                                 \n\
 995         .type   " __XSTRING(CNAME(bluetrap6)) ",@function               \n\
 996 " __XSTRING(CNAME(bluetrap6)) ":                                        \n\
 997         ss                                                              \n\
 998         movl    $0xa8c1d," __XSTRING(CNAME(trap_by_rdmsr)) "            \n\
 999         addl    $2, (%esp)      /* rdmsr is a 2-byte instruction */     \n\
1000         iret                                                            \n\
1001 ");
1002
1003 /*
1004  * Special exception 13 handler.
1005  * Accessing non-existent MSR generates general protection fault.
1006  */
1007 inthand_t       bluetrap13;
1008
1009 __asm
1010 ("                                                                      \n\
1011         .text                                                           \n\
1012         .p2align 2,0x90                                                 \n\
1013         .type   " __XSTRING(CNAME(bluetrap13)) ",@function              \n\
1014 " __XSTRING(CNAME(bluetrap13)) ":                                       \n\
1015         ss                                                              \n\
1016         movl    $0xa89c4," __XSTRING(CNAME(trap_by_rdmsr)) "            \n\
1017         popl    %eax            /* discard error code */                \n\
1018         addl    $2, (%esp)      /* rdmsr is a 2-byte instruction */     \n\
1019         iret                                                            \n\
1020 ");
1021
1022 /*
1023  * Distinguish IBM Blue Lightning CPU from Cyrix CPUs that does not
1024  * support cpuid instruction.  This function should be called after
1025  * loading interrupt descriptor table register.
1026  *
1027  * I don't like this method that handles fault, but I couldn't get
1028  * information for any other methods.  Does blue giant know?
1029  */
1030 static int
1031 identblue(void)
1032 {
1033
1034         trap_by_rdmsr = 0;
1035
1036         /*
1037          * Cyrix 486-class CPU does not support rdmsr instruction.
1038          * The rdmsr instruction generates invalid opcode fault, and exception
1039          * will be trapped by bluetrap6() on Cyrix 486-class CPU.  The
1040          * bluetrap6() set the magic number to trap_by_rdmsr.
1041          */
1042         setidt(6, bluetrap6, SDT_SYS386TGT, SEL_KPL,
1043             GSEL(GCODE_SEL, SEL_KPL));
1044
1045         /*
1046          * Certain BIOS disables cpuid instruction of Cyrix 6x86MX CPU.
1047          * In this case, rdmsr generates general protection fault, and
1048          * exception will be trapped by bluetrap13().
1049          */
1050         setidt(13, bluetrap13, SDT_SYS386TGT, SEL_KPL,
1051             GSEL(GCODE_SEL, SEL_KPL));
1052
1053         rdmsr(0x1002);          /* Cyrix CPU generates fault. */
1054
1055         if (trap_by_rdmsr == 0xa8c1d)
1056                 return IDENTBLUE_CYRIX486;
1057         else if (trap_by_rdmsr == 0xa89c4)
1058                 return IDENTBLUE_CYRIXM2;
1059         return IDENTBLUE_IBMCPU;
1060 }
1061
1062
1063 /*
1064  * identifycyrix() set lower 16 bits of cyrix_did as follows:
1065  *
1066  *  F E D C B A 9 8 7 6 5 4 3 2 1 0
1067  * +-------+-------+---------------+
1068  * |  SID  |  RID  |   Device ID   |
1069  * |    (DIR 1)    |    (DIR 0)    |
1070  * +-------+-------+---------------+
1071  */
1072 static void
1073 identifycyrix(void)
1074 {
1075         int     ccr2_test = 0, dir_test = 0;
1076         u_char  ccr2, ccr3;
1077
1078         mpintr_lock();
1079
1080         ccr2 = read_cyrix_reg(CCR2);
1081         write_cyrix_reg(CCR2, ccr2 ^ CCR2_LOCK_NW);
1082         read_cyrix_reg(CCR2);
1083         if (read_cyrix_reg(CCR2) != ccr2)
1084                 ccr2_test = 1;
1085         write_cyrix_reg(CCR2, ccr2);
1086
1087         ccr3 = read_cyrix_reg(CCR3);
1088         write_cyrix_reg(CCR3, ccr3 ^ CCR3_MAPEN3);
1089         read_cyrix_reg(CCR3);
1090         if (read_cyrix_reg(CCR3) != ccr3)
1091                 dir_test = 1;                                   /* CPU supports DIRs. */
1092         write_cyrix_reg(CCR3, ccr3);
1093
1094         if (dir_test) {
1095                 /* Device ID registers are available. */
1096                 cyrix_did = read_cyrix_reg(DIR1) << 8;
1097                 cyrix_did += read_cyrix_reg(DIR0);
1098         } else if (ccr2_test)
1099                 cyrix_did = 0x0010;             /* 486S A-step */
1100         else
1101                 cyrix_did = 0x00ff;             /* Old 486SLC/DLC and TI486SXLC/SXL */
1102         mpintr_unlock();
1103 }
1104
1105 #if 0
1106 /* Update TSC freq with the value indicated by the caller. */
1107 static void
1108 tsc_frequency_changed(void *arg, const struct cf_level *level, int status)
1109 {
1110         /*
1111          * If there was an error during the transition or
1112          * TSC is P-state invariant, don't do anything.
1113          */
1114         if (status != 0 || tsc_is_invariant)
1115                 return;
1116
1117         /* Total setting for this level gives the new frequency in MHz. */
1118         hw_clockrate = level->total_set.freq;
1119 }
1120 #endif
1121
1122 /*
1123  * Final stage of CPU identification. -- Should I check TI?
1124  */
1125 void
1126 finishidentcpu(void)
1127 {
1128         int     isblue = 0;
1129         u_char  ccr3;
1130         u_int   regs[4];
1131
1132         cpu_vendor_id = find_cpu_vendor_id();
1133
1134         /*
1135          * Clear "Limit CPUID Maxval" bit and get the largest standard CPUID
1136          * function number again if it is set from BIOS.  It is necessary
1137          * for probing correct CPU topology later.
1138          * XXX This is only done on the BSP package.
1139          */
1140         if (cpu_vendor_id == CPU_VENDOR_INTEL && cpu_high > 0 && cpu_high < 4 &&
1141             ((CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >= 0x3) ||
1142             (CPUID_TO_FAMILY(cpu_id) == 0x6 && CPUID_TO_MODEL(cpu_id) >= 0xe))) {
1143                 uint64_t msr;
1144                 msr = rdmsr(MSR_IA32_MISC_ENABLE);
1145                 if ((msr & 0x400000ULL) != 0) {
1146                         wrmsr(MSR_IA32_MISC_ENABLE, msr & ~0x400000ULL);
1147                         do_cpuid(0, regs);
1148                         cpu_high = regs[0];
1149                 }
1150         }
1151
1152         /* Detect AMD features (PTE no-execute bit, 3dnow, 64 bit mode etc) */
1153         if (cpu_vendor_id == CPU_VENDOR_INTEL ||
1154             cpu_vendor_id == CPU_VENDOR_AMD) {
1155                 init_exthigh();
1156                 if (cpu_exthigh >= 0x80000001) {
1157                         do_cpuid(0x80000001, regs);
1158                         amd_feature = regs[3] & ~(cpu_feature & 0x0183f3ff);
1159                         amd_feature2 = regs[2];
1160                 }
1161 #if 0
1162                 if (cpu_exthigh >= 0x80000007) {
1163                         do_cpuid(0x80000007, regs);
1164                         amd_pminfo = regs[3];
1165                 }
1166 #endif
1167                 if (cpu_exthigh >= 0x80000008) {
1168                         do_cpuid(0x80000008, regs);
1169                         cpu_procinfo2 = regs[2];
1170                 }
1171         } else if (cpu_vendor_id == CPU_VENDOR_CYRIX) {
1172                 if (cpu == CPU_486) {
1173                         /*
1174                          * These conditions are equivalent to:
1175                          *     - CPU does not support cpuid instruction.
1176                          *     - Cyrix/IBM CPU is detected.
1177                          */
1178                         isblue = identblue();
1179                         if (isblue == IDENTBLUE_IBMCPU) {
1180                                 strcpy(cpu_vendor, "IBM");
1181                                 cpu_vendor_id = CPU_VENDOR_IBM;
1182                                 cpu = CPU_BLUE;
1183                                 goto finish;
1184                         }
1185                 }
1186                 switch (cpu_id & 0xf00) {
1187                 case 0x600:
1188                         /*
1189                          * Cyrix's datasheet does not describe DIRs.
1190                          * Therefor, I assume it does not have them
1191                          * and use the result of the cpuid instruction.
1192                          * XXX they seem to have it for now at least. -Peter
1193                          */
1194                         identifycyrix();
1195                         cpu = CPU_M2;
1196                         break;
1197                 default:
1198                         identifycyrix();
1199                         /*
1200                          * This routine contains a trick.
1201                          * Don't check (cpu_id & 0x00f0) == 0x50 to detect M2, now.
1202                          */
1203                         switch (cyrix_did & 0x00f0) {
1204                         case 0x00:
1205                         case 0xf0:
1206                                 cpu = CPU_486DLC;
1207                                 break;
1208                         case 0x10:
1209                                 cpu = CPU_CY486DX;
1210                                 break;
1211                         case 0x20:
1212                                 if ((cyrix_did & 0x000f) < 8)
1213                                         cpu = CPU_M1;
1214                                 else
1215                                         cpu = CPU_M1SC;
1216                                 break;
1217                         case 0x30:
1218                                 cpu = CPU_M1;
1219                                 break;
1220                         case 0x40:
1221                                 /* MediaGX CPU */
1222                                 cpu = CPU_M1SC;
1223                                 break;
1224                         default:
1225                                 /* M2 and later CPUs are treated as M2. */
1226                                 cpu = CPU_M2;
1227
1228                                 /*
1229                                  * enable cpuid instruction.
1230                                  */
1231                                 ccr3 = read_cyrix_reg(CCR3);
1232                                 write_cyrix_reg(CCR3, CCR3_MAPEN0);
1233                                 write_cyrix_reg(CCR4, read_cyrix_reg(CCR4) | CCR4_CPUID);
1234                                 write_cyrix_reg(CCR3, ccr3);
1235
1236                                 do_cpuid(0, regs);
1237                                 cpu_high = regs[0];     /* eax */
1238                                 do_cpuid(1, regs);
1239                                 cpu_id = regs[0];       /* eax */
1240                                 cpu_feature = regs[3];  /* edx */
1241                                 break;
1242                         }
1243                 }
1244         } else if (cpu == CPU_486 && *cpu_vendor == '\0') {
1245                 /*
1246                  * There are BlueLightning CPUs that do not change
1247                  * undefined flags by dividing 5 by 2.  In this case,
1248                  * the CPU identification routine in locore.s leaves
1249                  * cpu_vendor null string and puts CPU_486 into the
1250                  * cpu.
1251                  */
1252                 isblue = identblue();
1253                 if (isblue == IDENTBLUE_IBMCPU) {
1254                         strcpy(cpu_vendor, "IBM");
1255                         cpu_vendor_id = CPU_VENDOR_IBM;
1256                         cpu = CPU_BLUE;
1257                 }
1258         }
1259
1260         /*
1261          * Set MI flags for MI procedures implemented using machine-specific
1262          * features.
1263          */
1264 finish:
1265         if (cpu_feature & CPUID_SSE2)
1266                 cpu_mi_feature |= CPU_MI_BZERONT;
1267
1268         if (cpu_feature2 & CPUID2_MON)
1269                 cpu_mi_feature |= CPU_MI_MONITOR;
1270
1271 #ifdef CPU_HAS_SSE2
1272         if ((cpu_feature & CPUID_SSE2) == 0)
1273                 panic("CPU does not has SSE2, remove options CPU_HAS_SSE2\n");
1274 #endif
1275 #ifdef CPU_HAS_FXSR
1276         if ((cpu_feature & CPUID_FXSR) == 0)
1277                 panic("CPU does not has FXSR, remove options CPU_HAS_FXSR\n");
1278 #endif
1279 }
1280
1281 static u_int
1282 find_cpu_vendor_id(void)
1283 {
1284         int     i;
1285
1286         for (i = 0; i < NELEM(cpu_vendors); i++)
1287                 if (strcmp(cpu_vendor, cpu_vendors[i].vendor) == 0)
1288                         return (cpu_vendors[i].vendor_id);
1289         return (0);
1290 }
1291
1292 static void
1293 print_AMD_assoc(int i)
1294 {
1295         if (i == 255)
1296                 kprintf(", fully associative\n");
1297         else
1298                 kprintf(", %d-way associative\n", i);
1299 }
1300
1301 /*
1302  * #31116 Rev 3.06 section 3.9
1303  * CPUID Fn8000_0006 L2/L3 Cache and L2 TLB Identifiers
1304  */
1305 static void
1306 print_AMD_L2L3_assoc(int i)
1307 {
1308         static const char *assoc_str[] = {
1309                 [0x0] = "disabled",
1310                 [0x1] = "direct mapped",
1311                 [0x2] = "2-way associative",
1312                 [0x4] = "4-way associative",
1313                 [0x6] = "8-way associative",
1314                 [0x8] = "16-way associative",
1315                 [0xa] = "32-way associative",
1316                 [0xb] = "48-way associative",
1317                 [0xc] = "64-way associative",
1318                 [0xd] = "96-way associative",
1319                 [0xe] = "128-way associative",
1320                 [0xf] = "fully associative"
1321         };
1322
1323         i &= 0xf;
1324         if (assoc_str[i] == NULL)
1325                 kprintf(", unknown associative\n");
1326         else
1327                 kprintf(", %s\n", assoc_str[i]);
1328 }
1329
1330 static void
1331 print_AMD_info(void)
1332 {
1333         quad_t amd_whcr;
1334
1335         if (cpu_exthigh >= 0x80000005) {
1336                 u_int regs[4];
1337
1338                 do_cpuid(0x80000005, regs);
1339                 kprintf("Data TLB: %d entries", (regs[1] >> 16) & 0xff);
1340                 print_AMD_assoc(regs[1] >> 24);
1341                 kprintf("Instruction TLB: %d entries", regs[1] & 0xff);
1342                 print_AMD_assoc((regs[1] >> 8) & 0xff);
1343                 kprintf("L1 data cache: %d kbytes", regs[2] >> 24);
1344                 kprintf(", %d bytes/line", regs[2] & 0xff);
1345                 kprintf(", %d lines/tag", (regs[2] >> 8) & 0xff);
1346                 print_AMD_assoc((regs[2] >> 16) & 0xff);
1347                 kprintf("L1 instruction cache: %d kbytes", regs[3] >> 24);
1348                 kprintf(", %d bytes/line", regs[3] & 0xff);
1349                 kprintf(", %d lines/tag", (regs[3] >> 8) & 0xff);
1350                 print_AMD_assoc((regs[3] >> 16) & 0xff);
1351                 if (cpu_exthigh >= 0x80000006) {        /* K6-III or later */
1352                         do_cpuid(0x80000006, regs);
1353                         /*
1354                          * Report right L2 cache size on Duron rev. A0.
1355                          */
1356                         if ((cpu_id & 0xFF0) == 0x630)
1357                                 kprintf("L2 internal cache: 64 kbytes");
1358                         else
1359                                 kprintf("L2 internal cache: %d kbytes", regs[2] >> 16);
1360
1361                         kprintf(", %d bytes/line", regs[2] & 0xff);
1362                         kprintf(", %d lines/tag", (regs[2] >> 8) & 0x0f);
1363                         print_AMD_L2L3_assoc((regs[2] >> 12) & 0x0f);
1364
1365                         /*
1366                          * #31116 Rev 3.06 section 2.16.2:
1367                          * ... If EDX[31:16] is not zero then the processor
1368                          * includes an L3. ...
1369                          */
1370                         if ((regs[3] & 0xffff0000) != 0) {
1371                                 kprintf("L3 shared cache: %d kbytes",
1372                                         (regs[3] >> 18) * 512);
1373                                 kprintf(", %d bytes/line", regs[3] & 0xff);
1374                                 kprintf(", %d lines/tag", (regs[3] >> 8) & 0x0f);
1375                                 print_AMD_L2L3_assoc((regs[3] >> 12) & 0x0f);
1376                         }
1377                 }
1378         }
1379         if (((cpu_id & 0xf00) == 0x500)
1380             && (((cpu_id & 0x0f0) > 0x80)
1381                 || (((cpu_id & 0x0f0) == 0x80)
1382                     && (cpu_id & 0x00f) > 0x07))) {
1383                 /* K6-2(new core [Stepping 8-F]), K6-III or later */
1384                 amd_whcr = rdmsr(0xc0000082);
1385                 if (!(amd_whcr & (0x3ff << 22))) {
1386                         kprintf("Write Allocate Disable\n");
1387                 } else {
1388                         kprintf("Write Allocate Enable Limit: %dM bytes\n",
1389                             (u_int32_t)((amd_whcr & (0x3ff << 22)) >> 22) * 4);
1390                         kprintf("Write Allocate 15-16M bytes: %s\n",
1391                             (amd_whcr & (1 << 16)) ? "Enable" : "Disable");
1392                 }
1393         } else if (((cpu_id & 0xf00) == 0x500)
1394                    && ((cpu_id & 0x0f0) > 0x50)) {
1395                 /* K6, K6-2(old core) */
1396                 amd_whcr = rdmsr(0xc0000082);
1397                 if (!(amd_whcr & (0x7f << 1))) {
1398                         kprintf("Write Allocate Disable\n");
1399                 } else {
1400                         kprintf("Write Allocate Enable Limit: %dM bytes\n",
1401                             (u_int32_t)((amd_whcr & (0x7f << 1)) >> 1) * 4);
1402                         kprintf("Write Allocate 15-16M bytes: %s\n",
1403                             (amd_whcr & 0x0001) ? "Enable" : "Disable");
1404                         kprintf("Hardware Write Allocate Control: %s\n",
1405                             (amd_whcr & 0x0100) ? "Enable" : "Disable");
1406                 }
1407         }
1408
1409         /*
1410          * Opteron Rev E shows a bug as in very rare occasions a read memory
1411          * barrier is not performed as expected if it is followed by a
1412          * non-atomic read-modify-write instruction.
1413          * As long as that bug pops up very rarely (intensive machine usage
1414          * on other operating systems generally generates one unexplainable
1415          * crash any 2 months) and as long as a model specific fix would be
1416          * impratical at this stage, print out a warning string if the broken
1417          * model and family are identified.
1418          */
1419         if (CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >= 0x20 &&
1420             CPUID_TO_MODEL(cpu_id) <= 0x3f)
1421                 kprintf("WARNING: This architecture revision has known SMP "
1422                     "hardware bugs which may cause random instability\n");
1423 }
1424
1425 static void
1426 print_INTEL_info(void)
1427 {
1428         u_int regs[4];
1429         u_int rounds, regnum;
1430         u_int nwaycode, nway;
1431
1432         if (cpu_high >= 2) {
1433                 rounds = 0;
1434                 do {
1435                         do_cpuid(0x2, regs);
1436                         if (rounds == 0 && (rounds = (regs[0] & 0xff)) == 0)
1437                                 break;  /* we have a buggy CPU */
1438
1439                         for (regnum = 0; regnum <= 3; ++regnum) {
1440                                 if (regs[regnum] & (1<<31))
1441                                         continue;
1442                                 if (regnum != 0)
1443                                         print_INTEL_TLB(regs[regnum] & 0xff);
1444                                 print_INTEL_TLB((regs[regnum] >> 8) & 0xff);
1445                                 print_INTEL_TLB((regs[regnum] >> 16) & 0xff);
1446                                 print_INTEL_TLB((regs[regnum] >> 24) & 0xff);
1447                         }
1448                 } while (--rounds > 0);
1449         }
1450
1451         if (cpu_exthigh >= 0x80000006) {
1452                 do_cpuid(0x80000006, regs);
1453                 nwaycode = (regs[2] >> 12) & 0x0f;
1454                 if (nwaycode >= 0x02 && nwaycode <= 0x08)
1455                         nway = 1 << (nwaycode / 2);
1456                 else
1457                         nway = 0;
1458                 kprintf("\nL2 cache: %u kbytes, %u-way associative, %u bytes/line",
1459                     (regs[2] >> 16) & 0xffff, nway, regs[2] & 0xff);
1460         }
1461
1462         kprintf("\n");
1463 }
1464
1465 static void
1466 print_INTEL_TLB(u_int data)
1467 {
1468         switch (data) {
1469         case 0x0:
1470         case 0x40:
1471         default:
1472                 break;
1473         case 0x1:
1474                 kprintf("\nInstruction TLB: 4 KB pages, 4-way set associative, 32 entries");
1475                 break;
1476         case 0x2:
1477                 kprintf("\nInstruction TLB: 4 MB pages, fully associative, 2 entries");
1478                 break;
1479         case 0x3:
1480                 kprintf("\nData TLB: 4 KB pages, 4-way set associative, 64 entries");
1481                 break;
1482         case 0x4:
1483                 kprintf("\nData TLB: 4 MB Pages, 4-way set associative, 8 entries");
1484                 break;
1485         case 0x6:
1486                 kprintf("\n1st-level instruction cache: 8 KB, 4-way set associative, 32 byte line size");
1487                 break;
1488         case 0x8:
1489                 kprintf("\n1st-level instruction cache: 16 KB, 4-way set associative, 32 byte line size");
1490                 break;
1491         case 0xa:
1492                 kprintf("\n1st-level data cache: 8 KB, 2-way set associative, 32 byte line size");
1493                 break;
1494         case 0xc:
1495                 kprintf("\n1st-level data cache: 16 KB, 4-way set associative, 32 byte line size");
1496                 break;
1497         case 0x22:
1498                 kprintf("\n3rd-level cache: 512 KB, 4-way set associative, sectored cache, 64 byte line size");
1499                 break;
1500         case 0x23:
1501                 kprintf("\n3rd-level cache: 1 MB, 8-way set associative, sectored cache, 64 byte line size");
1502                 break;
1503         case 0x25:
1504                 kprintf("\n3rd-level cache: 2 MB, 8-way set associative, sectored cache, 64 byte line size");
1505                 break;
1506         case 0x29:
1507                 kprintf("\n3rd-level cache: 4 MB, 8-way set associative, sectored cache, 64 byte line size");
1508                 break;
1509         case 0x2c:
1510                 kprintf("\n1st-level data cache: 32 KB, 8-way set associative, 64 byte line size");
1511                 break;
1512         case 0x30:
1513                 kprintf("\n1st-level instruction cache: 32 KB, 8-way set associative, 64 byte line size");
1514                 break;
1515         case 0x39:
1516                 kprintf("\n2nd-level cache: 128 KB, 4-way set associative, sectored cache, 64 byte line size");
1517                 break;
1518         case 0x3b:
1519                 kprintf("\n2nd-level cache: 128 KB, 2-way set associative, sectored cache, 64 byte line size");
1520                 break;
1521         case 0x3c:
1522                 kprintf("\n2nd-level cache: 256 KB, 4-way set associative, sectored cache, 64 byte line size");
1523                 break;
1524         case 0x41:
1525                 kprintf("\n2nd-level cache: 128 KB, 4-way set associative, 32 byte line size");
1526                 break;
1527         case 0x42:
1528                 kprintf("\n2nd-level cache: 256 KB, 4-way set associative, 32 byte line size");
1529                 break;
1530         case 0x43:
1531                 kprintf("\n2nd-level cache: 512 KB, 4-way set associative, 32 byte line size");
1532                 break;
1533         case 0x44:
1534                 kprintf("\n2nd-level cache: 1 MB, 4-way set associative, 32 byte line size");
1535                 break;
1536         case 0x45:
1537                 kprintf("\n2nd-level cache: 2 MB, 4-way set associative, 32 byte line size");
1538                 break;
1539         case 0x46:
1540                 kprintf("\n3rd-level cache: 4 MB, 4-way set associative, 64 byte line size");
1541                 break;
1542         case 0x47:
1543                 kprintf("\n3rd-level cache: 8 MB, 8-way set associative, 64 byte line size");
1544                 break;
1545         case 0x50:
1546                 kprintf("\nInstruction TLB: 4 KB, 2 MB or 4 MB pages, fully associative, 64 entries");
1547                 break;
1548         case 0x51:
1549                 kprintf("\nInstruction TLB: 4 KB, 2 MB or 4 MB pages, fully associative, 128 entries");
1550                 break;
1551         case 0x52:
1552                 kprintf("\nInstruction TLB: 4 KB, 2 MB or 4 MB pages, fully associative, 256 entries");
1553                 break;
1554         case 0x5b:
1555                 kprintf("\nData TLB: 4 KB or 4 MB pages, fully associative, 64 entries");
1556                 break;
1557         case 0x5c:
1558                 kprintf("\nData TLB: 4 KB or 4 MB pages, fully associative, 128 entries");
1559                 break;
1560         case 0x5d:
1561                 kprintf("\nData TLB: 4 KB or 4 MB pages, fully associative, 256 entries");
1562                 break;
1563         case 0x60:
1564                 kprintf("\n1st-level data cache: 16 KB, 8-way set associative, sectored cache, 64 byte line size");
1565                 break;
1566         case 0x66:
1567                 kprintf("\n1st-level data cache: 8 KB, 4-way set associative, sectored cache, 64 byte line size");
1568                 break;
1569         case 0x67:
1570                 kprintf("\n1st-level data cache: 16 KB, 4-way set associative, sectored cache, 64 byte line size");
1571                 break;
1572         case 0x68:
1573                 kprintf("\n1st-level data cache: 32 KB, 4 way set associative, sectored cache, 64 byte line size");
1574                 break;
1575         case 0x70:
1576                 kprintf("\nTrace cache: 12K-uops, 8-way set associative");
1577                 break;
1578         case 0x71:
1579                 kprintf("\nTrace cache: 16K-uops, 8-way set associative");
1580                 break;
1581         case 0x72:
1582                 kprintf("\nTrace cache: 32K-uops, 8-way set associative");
1583                 break;
1584         case 0x78:
1585                 kprintf("\n2nd-level cache: 1 MB, 4-way set associative, 64-byte line size");
1586                 break;
1587         case 0x79:
1588                 kprintf("\n2nd-level cache: 128 KB, 8-way set associative, sectored cache, 64 byte line size");
1589                 break;
1590         case 0x7a:
1591                 kprintf("\n2nd-level cache: 256 KB, 8-way set associative, sectored cache, 64 byte line size");
1592                 break;
1593         case 0x7b:
1594                 kprintf("\n2nd-level cache: 512 KB, 8-way set associative, sectored cache, 64 byte line size");
1595                 break;
1596         case 0x7c:
1597                 kprintf("\n2nd-level cache: 1 MB, 8-way set associative, sectored cache, 64 byte line size");
1598                 break;
1599         case 0x7d:
1600                 kprintf("\n2nd-level cache: 2-MB, 8-way set associative, 64-byte line size");
1601                 break;
1602         case 0x7f:
1603                 kprintf("\n2nd-level cache: 512-KB, 2-way set associative, 64-byte line size");
1604                 break;
1605         case 0x82:
1606                 kprintf("\n2nd-level cache: 256 KB, 8-way set associative, 32 byte line size");
1607                 break;
1608         case 0x83:
1609                 kprintf("\n2nd-level cache: 512 KB, 8-way set associative, 32 byte line size");
1610                 break;
1611         case 0x84:
1612                 kprintf("\n2nd-level cache: 1 MB, 8-way set associative, 32 byte line size");
1613                 break;
1614         case 0x85:
1615                 kprintf("\n2nd-level cache: 2 MB, 8-way set associative, 32 byte line size");
1616                 break;
1617         case 0x86:
1618                 kprintf("\n2nd-level cache: 512 KB, 4-way set associative, 64 byte line size");
1619                 break;
1620         case 0x87:
1621                 kprintf("\n2nd-level cache: 1 MB, 8-way set associative, 64 byte line size");
1622                 break;
1623         case 0xb0:
1624                 kprintf("\nInstruction TLB: 4 KB Pages, 4-way set associative, 128 entries");
1625                 break;
1626         case 0xb3:
1627                 kprintf("\nData TLB: 4 KB Pages, 4-way set associative, 128 entries");
1628                 break;
1629         }
1630 }
1631
1632 static void
1633 print_transmeta_info(void)
1634 {
1635         u_int regs[4], nreg = 0;
1636
1637         do_cpuid(0x80860000, regs);
1638         nreg = regs[0];
1639         if (nreg >= 0x80860001) {
1640                 do_cpuid(0x80860001, regs);
1641                 kprintf("  Processor revision %u.%u.%u.%u\n",
1642                        (regs[1] >> 24) & 0xff,
1643                        (regs[1] >> 16) & 0xff,
1644                        (regs[1] >> 8) & 0xff,
1645                        regs[1] & 0xff);
1646         }
1647         if (nreg >= 0x80860002) {
1648                 do_cpuid(0x80860002, regs);
1649                 kprintf("  Code Morphing Software revision %u.%u.%u-%u-%u\n",
1650                        (regs[1] >> 24) & 0xff,
1651                        (regs[1] >> 16) & 0xff,
1652                        (regs[1] >> 8) & 0xff,
1653                        regs[1] & 0xff,
1654                        regs[2]);
1655         }
1656         if (nreg >= 0x80860006) {
1657                 char info[65];
1658                 do_cpuid(0x80860003, (u_int*) &info[0]);
1659                 do_cpuid(0x80860004, (u_int*) &info[16]);
1660                 do_cpuid(0x80860005, (u_int*) &info[32]);
1661                 do_cpuid(0x80860006, (u_int*) &info[48]);
1662                 info[64] = 0;
1663                 kprintf("  %s\n", info);
1664         }
1665 }
1666
1667 static void
1668 print_via_padlock_info(void)
1669 {
1670         u_int regs[4];
1671
1672         /* Check for supported models. */
1673         switch (cpu_id & 0xff0) {
1674         case 0x690:
1675                 if ((cpu_id & 0xf) < 3)
1676                         return;
1677         case 0x6a0:
1678         case 0x6d0:
1679         case 0x6f0:
1680                 break;
1681         default:
1682                 return;
1683         }
1684
1685         do_cpuid(0xc0000000, regs);
1686         if (regs[0] >= 0xc0000001)
1687                 do_cpuid(0xc0000001, regs);
1688         else
1689                 return;
1690
1691         kprintf("\n  VIA Padlock Features=0x%b", regs[3],
1692         "\020"
1693         "\003RNG"               /* RNG */
1694         "\007AES"               /* ACE */
1695         "\011AES-CTR"           /* ACE2 */
1696         "\013SHA1,SHA256"       /* PHE */
1697         "\015RSA"               /* PMM */
1698         );
1699 }
1700
1701 void
1702 additional_cpu_info(const char *line)
1703 {
1704         int i;
1705
1706         if ((i = additional_cpu_info_count) < MAX_ADDITIONAL_INFO) {
1707                 additional_cpu_info_ary[i] = line;
1708                 ++additional_cpu_info_count;
1709         }
1710 }