1 /*- 2 * Copyright (c) 2005-2009 Jung-uk Kim <jkim@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <stand.h> 31 #include <sys/endian.h> 32 33 #define PTOV(x) ptov(x) 34 35 /* Only enable 64-bit entry point if it makes sense */ 36 #if __SIZEOF_POINTER__ > 4 37 #define HAS_SMBV3 1 38 #endif 39 40 /* 41 * Detect SMBIOS and export information about the SMBIOS into the 42 * environment. 43 * 44 * System Management BIOS Reference Specification, v2.6 Final 45 * http://www.dmtf.org/standards/published_documents/DSP0134_2.6.0.pdf 46 * 47 * System Management BIOS (SMBIOS) Reference Specification, 3.6.0 48 * https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.6.0.pdf 49 */ 50 51 /* 52 * The first quoted paragraph below can also be found in section 2.1.1 SMBIOS 53 * Structure Table Entry Point of System Management BIOS Reference 54 * Specification, v2.6 Final 55 * 56 * (From System Management BIOS (SMBIOS) Reference Specification, 3.6.0) 57 * 5.2.1 SMBIOS 2.1 (32-bit) Entry Point 58 * 59 * "On non-UEFI systems, the 32-bit SMBIOS Entry Point structure, can be 60 * located by application software by searching for the anchor-string on 61 * paragraph (16-byte) boundaries within the physical memory address 62 * range 000F0000h to 000FFFFFh. This entry point encapsulates an intermediate 63 * anchor string that is used by some existing DMI browsers. 64 * 65 * On UEFI-based systems, the SMBIOS Entry Point structure can be located by 66 * looking in the EFI Configuration Table for the SMBIOS GUID 67 * (SMBIOS_TABLE_GUID, {EB9D2D31-2D88-11D3-9A16-0090273FC14D}) and using the 68 * associated pointer. See section 4.6 of the UEFI Specification for details. 69 * See section 2.3 of the UEFI Specification for how to report the containing 70 * memory type. 71 * 72 * NOTE While the SMBIOS Major and Minor Versions (offsets 06h and 07h) 73 * currently duplicate the information that is present in the SMBIOS BCD 74 * Revision (offset 1Eh), they provide a path for future growth in this 75 * specification. The BCD Revision, for example, provides only a single digit 76 * for each of the major and minor version numbers." 77 * 78 * 5.2.2 SMBIOS 860 3.0 (64-bit) Entry Point 79 * 80 * "On non-UEFI systems, the 64-bit SMBIOS Entry Point structure can be located 81 * by application software by searching for the anchor-string on paragraph 82 * (16-byte) boundaries within the physical memory address range 000F0000h to 83 * 000FFFFFh. 84 * 85 * On UEFI-based systems, the SMBIOS Entry Point structure can be located by 86 * looking in the EFI Configuration Table for the SMBIOS 3.x GUID 87 * (SMBIOS3_TABLE_GUID, {F2FD1544-9794-4A2C-992E-E5BBCF20E394}) and using the 88 * associated pointer. See section 4.6 of the UEFI Specification for details. 89 * See section 2.3 of the UEFI Specification for how to report the containing 90 * memory type." 91 */ 92 #define SMBIOS_START 0xf0000 93 #define SMBIOS_LENGTH 0x10000 94 #define SMBIOS_STEP 0x10 95 #define SMBIOS_SIG "_SM_" 96 #define SMBIOS3_SIG "_SM3_" 97 #define SMBIOS_DMI_SIG "_DMI_" 98 99 /* 100 * 5.1 General 101 *... 102 * NOTE The Entry Point Structure and all SMBIOS structures assume a 103 * little-endian ordering convention... 104 * ... 105 * 106 * We use memcpy to avoid unaligned access to memory. To normal memory, this is 107 * fine, but the memory we are using might be mmap'd /dev/mem which under Linux 108 * on aarch64 doesn't allow unaligned access. leXdec and friends can't be used 109 * because those can optimize to an unaligned load (which often is fine, but not 110 * for mmap'd /dev/mem which has special memory attributes). 111 */ 112 static inline uint8_t SMBIOS_GET8(const caddr_t base, int off) { return (base[off]); } 113 114 static inline uint16_t 115 SMBIOS_GET16(const caddr_t base, int off) 116 { 117 uint16_t v; 118 119 memcpy(&v, base + off, sizeof(v)); 120 return (le16toh(v)); 121 } 122 123 static inline uint32_t 124 SMBIOS_GET32(const caddr_t base, int off) 125 { 126 uint32_t v; 127 128 memcpy(&v, base + off, sizeof(v)); 129 return (le32toh(v)); 130 } 131 132 static inline uint64_t 133 SMBIOS_GET64(const caddr_t base, int off) 134 { 135 uint64_t v; 136 137 memcpy(&v, base + off, sizeof(v)); 138 return (le64toh(v)); 139 } 140 141 #define SMBIOS_GETLEN(base) SMBIOS_GET8(base, 0x01) 142 #define SMBIOS_GETSTR(base) ((base) + SMBIOS_GETLEN(base)) 143 144 struct smbios_attr { 145 int probed; 146 caddr_t addr; 147 size_t length; 148 size_t count; 149 int major; 150 int minor; 151 int ver; 152 const char* bios_vendor; 153 const char* maker; 154 const char* product; 155 uint32_t enabled_memory; 156 uint32_t old_enabled_memory; 157 uint8_t enabled_sockets; 158 uint8_t populated_sockets; 159 }; 160 161 static struct smbios_attr smbios; 162 #ifdef HAS_SMBV3 163 static int isv3; 164 #endif 165 166 static uint8_t 167 smbios_checksum(const caddr_t addr, const uint8_t len) 168 { 169 uint8_t sum; 170 int i; 171 172 for (sum = 0, i = 0; i < len; i++) 173 sum += SMBIOS_GET8(addr, i); 174 return (sum); 175 } 176 177 static caddr_t 178 smbios_sigsearch(const caddr_t addr, const uint32_t len) 179 { 180 caddr_t cp; 181 182 /* Search on 16-byte boundaries. */ 183 for (cp = addr; cp < addr + len; cp += SMBIOS_STEP) { 184 /* v2.1, 32-bit Entry point */ 185 if (strncmp(cp, SMBIOS_SIG, sizeof(SMBIOS_SIG) - 1) == 0 && 186 smbios_checksum(cp, SMBIOS_GET8(cp, 0x05)) == 0 && 187 strncmp(cp + 0x10, SMBIOS_DMI_SIG, 5) == 0 && 188 smbios_checksum(cp + 0x10, 0x0f) == 0) 189 return (cp); 190 191 #ifdef HAS_SMBV3 192 /* v3.0, 64-bit Entry point */ 193 if (strncmp(cp, SMBIOS3_SIG, sizeof(SMBIOS3_SIG) - 1) == 0 && 194 smbios_checksum(cp, SMBIOS_GET8(cp, 0x06)) == 0) { 195 isv3 = 1; 196 return (cp); 197 } 198 #endif 199 } 200 return (NULL); 201 } 202 203 static const char* 204 smbios_getstring(caddr_t addr, const int offset) 205 { 206 caddr_t cp; 207 int i, idx; 208 209 idx = SMBIOS_GET8(addr, offset); 210 if (idx != 0) { 211 cp = SMBIOS_GETSTR(addr); 212 for (i = 1; i < idx; i++) 213 cp += strlen(cp) + 1; 214 return cp; 215 } 216 return (NULL); 217 } 218 219 static void 220 smbios_setenv(const char *name, caddr_t addr, const int offset) 221 { 222 const char* val; 223 224 val = smbios_getstring(addr, offset); 225 if (val != NULL) 226 setenv(name, val, 1); 227 } 228 229 #ifdef SMBIOS_SERIAL_NUMBERS 230 231 #define UUID_SIZE 16 232 #define UUID_TYPE uint32_t 233 #define UUID_STEP sizeof(UUID_TYPE) 234 #define UUID_ALL_BITS (UUID_SIZE / UUID_STEP) 235 #define UUID_GET(base, off) SMBIOS_GET32(base, off) 236 237 static void 238 smbios_setuuid(const char *name, const caddr_t addr, const int ver __unused) 239 { 240 char uuid[37]; 241 int byteorder, i, ones, zeros; 242 UUID_TYPE n; 243 uint32_t f1; 244 uint16_t f2, f3; 245 246 for (i = 0, ones = 0, zeros = 0; i < UUID_SIZE; i += UUID_STEP) { 247 n = UUID_GET(addr, i) + 1; 248 if (zeros == 0 && n == 0) 249 ones++; 250 else if (ones == 0 && n == 1) 251 zeros++; 252 else 253 break; 254 } 255 256 if (ones != UUID_ALL_BITS && zeros != UUID_ALL_BITS) { 257 /* 258 * 3.3.2.1 System UUID 259 * 260 * "Although RFC 4122 recommends network byte order for all 261 * fields, the PC industry (including the ACPI, UEFI, and 262 * Microsoft specifications) has consistently used 263 * little-endian byte encoding for the first three fields: 264 * time_low, time_mid, time_hi_and_version. The same encoding, 265 * also known as wire format, should also be used for the 266 * SMBIOS representation of the UUID." 267 * 268 * Note: We use network byte order for backward compatibility 269 * unless SMBIOS version is 2.6+ or little-endian is forced. 270 */ 271 #if defined(SMBIOS_LITTLE_ENDIAN_UUID) 272 byteorder = LITTLE_ENDIAN; 273 #elif defined(SMBIOS_NETWORK_ENDIAN_UUID) 274 byteorder = BIG_ENDIAN; 275 #else 276 byteorder = ver < 0x0206 ? BIG_ENDIAN : LITTLE_ENDIAN; 277 #endif 278 if (byteorder != LITTLE_ENDIAN) { 279 f1 = ntohl(SMBIOS_GET32(addr, 0)); 280 f2 = ntohs(SMBIOS_GET16(addr, 4)); 281 f3 = ntohs(SMBIOS_GET16(addr, 6)); 282 } else { 283 f1 = le32toh(SMBIOS_GET32(addr, 0)); 284 f2 = le16toh(SMBIOS_GET16(addr, 4)); 285 f3 = le16toh(SMBIOS_GET16(addr, 6)); 286 } 287 sprintf(uuid, 288 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", 289 f1, f2, f3, SMBIOS_GET8(addr, 8), SMBIOS_GET8(addr, 9), 290 SMBIOS_GET8(addr, 10), SMBIOS_GET8(addr, 11), 291 SMBIOS_GET8(addr, 12), SMBIOS_GET8(addr, 13), 292 SMBIOS_GET8(addr, 14), SMBIOS_GET8(addr, 15)); 293 setenv(name, uuid, 1); 294 } 295 } 296 297 #undef UUID_SIZE 298 #undef UUID_TYPE 299 #undef UUID_STEP 300 #undef UUID_ALL_BITS 301 #undef UUID_GET 302 303 #endif 304 305 static const char * 306 smbios_parse_chassis_type(caddr_t addr) 307 { 308 int type; 309 310 type = SMBIOS_GET8(addr, 0x5); 311 switch (type) { 312 case 0x1: 313 return ("Other"); 314 case 0x2: 315 return ("Unknown"); 316 case 0x3: 317 return ("Desktop"); 318 case 0x4: 319 return ("Low Profile Desktop"); 320 case 0x5: 321 return ("Pizza Box"); 322 case 0x6: 323 return ("Mini Tower"); 324 case 0x7: 325 return ("Tower"); 326 case 0x8: 327 return ("Portable"); 328 case 0x9: 329 return ("Laptop"); 330 case 0xA: 331 return ("Notebook"); 332 case 0xB: 333 return ("Hand Held"); 334 case 0xC: 335 return ("Docking Station"); 336 case 0xD: 337 return ("All in One"); 338 case 0xE: 339 return ("Sub Notebook"); 340 case 0xF: 341 return ("Lunch Box"); 342 case 0x10: 343 return ("Space-saving"); 344 case 0x11: 345 return ("Main Server Chassis"); 346 case 0x12: 347 return ("Expansion Chassis"); 348 case 0x13: 349 return ("SubChassis"); 350 case 0x14: 351 return ("Bus Expansion Chassis"); 352 case 0x15: 353 return ("Peripheral Chassis"); 354 case 0x16: 355 return ("RAID Chassis"); 356 case 0x17: 357 return ("Rack Mount Chassis"); 358 case 0x18: 359 return ("Sealed-case PC"); 360 case 0x19: 361 return ("Multi-system chassis"); 362 case 0x1A: 363 return ("Compact PCI"); 364 case 0x1B: 365 return ("Advanced TCA"); 366 case 0x1C: 367 return ("Blade"); 368 case 0x1D: 369 return ("Blade Enclosure"); 370 case 0x1E: 371 return ("Tablet"); 372 case 0x1F: 373 return ("Convertible"); 374 case 0x20: 375 return ("Detachable"); 376 case 0x21: 377 return ("IoT Gateway"); 378 case 0x22: 379 return ("Embedded PC"); 380 case 0x23: 381 return ("Mini PC"); 382 case 0x24: 383 return ("Stick PC"); 384 } 385 386 return ("Undefined"); 387 } 388 389 static caddr_t 390 smbios_parse_table(const caddr_t addr) 391 { 392 caddr_t cp; 393 int proc, size, osize, type; 394 uint8_t bios_minor, bios_major; 395 char buf[16]; 396 397 type = SMBIOS_GET8(addr, 0); /* 3.1.2 Structure Header Format */ 398 switch(type) { 399 case 0: /* 3.3.1 BIOS Information (Type 0) */ 400 smbios_setenv("smbios.bios.vendor", addr, 0x04); 401 smbios_setenv("smbios.bios.version", addr, 0x05); 402 smbios_setenv("smbios.bios.reldate", addr, 0x08); 403 bios_major = SMBIOS_GET8(addr, 0x14); 404 bios_minor = SMBIOS_GET8(addr, 0x15); 405 if (bios_minor != 0xFF && bios_major != 0xFF) { 406 snprintf(buf, sizeof(buf), "%u.%u", 407 bios_major, bios_minor); 408 setenv("smbios.bios.revision", buf, 1); 409 } 410 break; 411 412 case 1: /* 3.3.2 System Information (Type 1) */ 413 smbios_setenv("smbios.system.maker", addr, 0x04); 414 smbios_setenv("smbios.system.product", addr, 0x05); 415 smbios_setenv("smbios.system.version", addr, 0x06); 416 #ifdef SMBIOS_SERIAL_NUMBERS 417 smbios_setenv("smbios.system.serial", addr, 0x07); 418 smbios_setuuid("smbios.system.uuid", addr + 0x08, smbios.ver); 419 #endif 420 if (smbios.major > 2 || 421 (smbios.major == 2 && smbios.minor >= 4)) { 422 smbios_setenv("smbios.system.sku", addr, 0x19); 423 smbios_setenv("smbios.system.family", addr, 0x1a); 424 } 425 break; 426 427 case 2: /* 3.3.3 Base Board (or Module) Information (Type 2) */ 428 smbios_setenv("smbios.planar.maker", addr, 0x04); 429 smbios_setenv("smbios.planar.product", addr, 0x05); 430 smbios_setenv("smbios.planar.version", addr, 0x06); 431 #ifdef SMBIOS_SERIAL_NUMBERS 432 smbios_setenv("smbios.planar.serial", addr, 0x07); 433 smbios_setenv("smbios.planar.tag", addr, 0x08); 434 #endif 435 smbios_setenv("smbios.planar.location", addr, 0x0a); 436 break; 437 438 case 3: /* 3.3.4 System Enclosure or Chassis (Type 3) */ 439 smbios_setenv("smbios.chassis.maker", addr, 0x04); 440 setenv("smbios.chassis.type", smbios_parse_chassis_type(addr), 1); 441 smbios_setenv("smbios.chassis.version", addr, 0x06); 442 #ifdef SMBIOS_SERIAL_NUMBERS 443 smbios_setenv("smbios.chassis.serial", addr, 0x07); 444 smbios_setenv("smbios.chassis.tag", addr, 0x08); 445 #endif 446 break; 447 448 case 4: /* 3.3.5 Processor Information (Type 4) */ 449 /* 450 * Offset 18h: Processor Status 451 * 452 * Bit 7 Reserved, must be 0 453 * Bit 6 CPU Socket Populated 454 * 1 - CPU Socket Populated 455 * 0 - CPU Socket Unpopulated 456 * Bit 5:3 Reserved, must be zero 457 * Bit 2:0 CPU Status 458 * 0h - Unknown 459 * 1h - CPU Enabled 460 * 2h - CPU Disabled by User via BIOS Setup 461 * 3h - CPU Disabled by BIOS (POST Error) 462 * 4h - CPU is Idle, waiting to be enabled 463 * 5-6h - Reserved 464 * 7h - Other 465 */ 466 proc = SMBIOS_GET8(addr, 0x18); 467 if ((proc & 0x07) == 1) 468 smbios.enabled_sockets++; 469 if ((proc & 0x40) != 0) 470 smbios.populated_sockets++; 471 break; 472 473 case 6: /* 3.3.7 Memory Module Information (Type 6, Obsolete) */ 474 /* 475 * Offset 0Ah: Enabled Size 476 * 477 * Bit 7 Bank connection 478 * 1 - Double-bank connection 479 * 0 - Single-bank connection 480 * Bit 6:0 Size (n), where 2**n is the size in MB 481 * 7Dh - Not determinable (Installed Size only) 482 * 7Eh - Module is installed, but no memory 483 * has been enabled 484 * 7Fh - Not installed 485 */ 486 osize = SMBIOS_GET8(addr, 0x0a) & 0x7f; 487 if (osize > 0 && osize < 22) 488 smbios.old_enabled_memory += 1 << (osize + 10); 489 break; 490 491 case 17: /* 3.3.18 Memory Device (Type 17) */ 492 /* 493 * Offset 0Ch: Size 494 * 495 * Bit 15 Granularity 496 * 1 - Value is in kilobytes units 497 * 0 - Value is in megabytes units 498 * Bit 14:0 Size 499 */ 500 size = SMBIOS_GET16(addr, 0x0c); 501 if (size != 0 && size != 0xffff) 502 smbios.enabled_memory += (size & 0x8000) != 0 ? 503 (size & 0x7fff) : (size << 10); 504 break; 505 506 default: /* skip other types */ 507 break; 508 } 509 510 /* Find structure terminator. */ 511 cp = SMBIOS_GETSTR(addr); 512 while (SMBIOS_GET16(cp, 0) != 0) 513 cp++; 514 515 return (cp + 2); 516 } 517 518 static caddr_t 519 smbios_find_struct(int type) 520 { 521 caddr_t dmi; 522 size_t i; 523 caddr_t ep; 524 525 if (smbios.addr == NULL) 526 return (NULL); 527 528 ep = smbios.addr + smbios.length; 529 for (dmi = smbios.addr, i = 0; 530 dmi < ep && i < smbios.count; i++) { 531 if (SMBIOS_GET8(dmi, 0) == type) { 532 return dmi; 533 } 534 /* Find structure terminator. */ 535 dmi = SMBIOS_GETSTR(dmi); 536 while (SMBIOS_GET16(dmi, 0) != 0 && dmi < ep) { 537 dmi++; 538 } 539 dmi += 2; /* For checksum */ 540 } 541 542 return (NULL); 543 } 544 545 static void 546 smbios_probe(const caddr_t addr) 547 { 548 caddr_t saddr, info; 549 uintptr_t paddr; 550 int maj_off; 551 int min_off; 552 553 if (smbios.probed) 554 return; 555 smbios.probed = 1; 556 557 /* Search signatures and validate checksums. */ 558 saddr = smbios_sigsearch(addr ? addr : PTOV(SMBIOS_START), 559 SMBIOS_LENGTH); 560 if (saddr == NULL) 561 return; 562 563 #ifdef HAS_SMBV3 564 if (isv3) { 565 smbios.length = SMBIOS_GET32(saddr, 0x0c); /* Structure Table Length */ 566 paddr = SMBIOS_GET64(saddr, 0x10); /* Structure Table Address */ 567 smbios.count = -1; /* not present in V3 */ 568 smbios.ver = 0; /* not present in V3 */ 569 maj_off = 0x07; 570 min_off = 0x08; 571 } else 572 #endif 573 { 574 smbios.length = SMBIOS_GET16(saddr, 0x16); /* Structure Table Length */ 575 paddr = SMBIOS_GET32(saddr, 0x18); /* Structure Table Address */ 576 smbios.count = SMBIOS_GET16(saddr, 0x1c); /* No of SMBIOS Structures */ 577 smbios.ver = SMBIOS_GET8(saddr, 0x1e); /* SMBIOS BCD Revision */ 578 maj_off = 0x06; 579 min_off = 0x07; 580 } 581 582 583 if (smbios.ver != 0) { 584 smbios.major = smbios.ver >> 4; 585 smbios.minor = smbios.ver & 0x0f; 586 if (smbios.major > 9 || smbios.minor > 9) 587 smbios.ver = 0; 588 } 589 if (smbios.ver == 0) { 590 smbios.major = SMBIOS_GET8(saddr, maj_off);/* SMBIOS Major Version */ 591 smbios.minor = SMBIOS_GET8(saddr, min_off);/* SMBIOS Minor Version */ 592 } 593 smbios.ver = (smbios.major << 8) | smbios.minor; 594 smbios.addr = PTOV(paddr); 595 596 /* Get system information from SMBIOS */ 597 info = smbios_find_struct(0x00); 598 if (info != NULL) { 599 smbios.bios_vendor = smbios_getstring(info, 0x04); 600 } 601 info = smbios_find_struct(0x01); 602 if (info != NULL) { 603 smbios.maker = smbios_getstring(info, 0x04); 604 smbios.product = smbios_getstring(info, 0x05); 605 } 606 } 607 608 void 609 smbios_detect(const caddr_t addr) 610 { 611 char buf[16]; 612 caddr_t dmi; 613 size_t i; 614 615 smbios_probe(addr); 616 if (smbios.addr == NULL) 617 return; 618 619 for (dmi = smbios.addr, i = 0; 620 dmi < smbios.addr + smbios.length && i < smbios.count; i++) 621 dmi = smbios_parse_table(dmi); 622 623 sprintf(buf, "%d.%d", smbios.major, smbios.minor); 624 setenv("smbios.version", buf, 1); 625 if (smbios.enabled_memory > 0 || smbios.old_enabled_memory > 0) { 626 sprintf(buf, "%u", smbios.enabled_memory > 0 ? 627 smbios.enabled_memory : smbios.old_enabled_memory); 628 setenv("smbios.memory.enabled", buf, 1); 629 } 630 if (smbios.enabled_sockets > 0) { 631 sprintf(buf, "%u", smbios.enabled_sockets); 632 setenv("smbios.socket.enabled", buf, 1); 633 } 634 if (smbios.populated_sockets > 0) { 635 sprintf(buf, "%u", smbios.populated_sockets); 636 setenv("smbios.socket.populated", buf, 1); 637 } 638 } 639 640 static int 641 smbios_match_str(const char* s1, const char* s2) 642 { 643 return (s1 == NULL || (s2 != NULL && !strcmp(s1, s2))); 644 } 645 646 int 647 smbios_match(const char* bios_vendor, const char* maker, 648 const char* product) 649 { 650 /* XXXRP currently, only called from non-EFI. */ 651 smbios_probe(NULL); 652 return (smbios_match_str(bios_vendor, smbios.bios_vendor) && 653 smbios_match_str(maker, smbios.maker) && 654 smbios_match_str(product, smbios.product)); 655 } 656