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 <stand.h> 28 #include <sys/endian.h> 29 30 #define PTOV(x) ptov(x) 31 32 /* 33 * Detect SMBIOS and export information about the SMBIOS into the 34 * environment. 35 * 36 * System Management BIOS Reference Specification, v2.6 Final 37 * http://www.dmtf.org/standards/published_documents/DSP0134_2.6.0.pdf 38 * 39 * System Management BIOS (SMBIOS) Reference Specification, 3.6.0 40 * https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.6.0.pdf 41 */ 42 43 /* 44 * The first quoted paragraph below can also be found in section 2.1.1 SMBIOS 45 * Structure Table Entry Point of System Management BIOS Reference 46 * Specification, v2.6 Final 47 * 48 * (From System Management BIOS (SMBIOS) Reference Specification, 3.6.0) 49 * 5.2.1 SMBIOS 2.1 (32-bit) Entry Point 50 * 51 * "On non-UEFI systems, the 32-bit SMBIOS Entry Point structure, can be 52 * located by application software by searching for the anchor-string on 53 * paragraph (16-byte) boundaries within the physical memory address 54 * range 000F0000h to 000FFFFFh. This entry point encapsulates an intermediate 55 * anchor string that is used by some existing DMI browsers. 56 * 57 * On UEFI-based systems, the SMBIOS Entry Point structure can be located by 58 * looking in the EFI Configuration Table for the SMBIOS GUID 59 * (SMBIOS_TABLE_GUID, {EB9D2D31-2D88-11D3-9A16-0090273FC14D}) and using the 60 * associated pointer. See section 4.6 of the UEFI Specification for details. 61 * See section 2.3 of the UEFI Specification for how to report the containing 62 * memory type. 63 * 64 * NOTE While the SMBIOS Major and Minor Versions (offsets 06h and 07h) 65 * currently duplicate the information that is present in the SMBIOS BCD 66 * Revision (offset 1Eh), they provide a path for future growth in this 67 * specification. The BCD Revision, for example, provides only a single digit 68 * for each of the major and minor version numbers." 69 * 70 * 5.2.2 SMBIOS 860 3.0 (64-bit) Entry Point 71 * 72 * "On non-UEFI systems, the 64-bit SMBIOS Entry Point structure can be located 73 * by application software by searching for the anchor-string on paragraph 74 * (16-byte) boundaries within the physical memory address range 000F0000h to 75 * 000FFFFFh. 76 * 77 * On UEFI-based systems, the SMBIOS Entry Point structure can be located by 78 * looking in the EFI Configuration Table for the SMBIOS 3.x GUID 79 * (SMBIOS3_TABLE_GUID, {F2FD1544-9794-4A2C-992E-E5BBCF20E394}) and using the 80 * associated pointer. See section 4.6 of the UEFI Specification for details. 81 * See section 2.3 of the UEFI Specification for how to report the containing 82 * memory type." 83 */ 84 #define SMBIOS_START 0xf0000 85 #define SMBIOS_LENGTH 0x10000 86 #define SMBIOS_STEP 0x10 87 #define SMBIOS_SIG "_SM_" 88 #define SMBIOS3_SIG "_SM3_" 89 #define SMBIOS_DMI_SIG "_DMI_" 90 #define SMBIOS_EOT_TYPE 0x7f 91 92 /* 93 * 5.1 General 94 *... 95 * NOTE The Entry Point Structure and all SMBIOS structures assume a 96 * little-endian ordering convention... 97 * ... 98 * 99 * We use memcpy to avoid unaligned access to memory. To normal memory, this is 100 * fine, but the memory we are using might be mmap'd /dev/mem which under Linux 101 * on aarch64 doesn't allow unaligned access. leXdec and friends can't be used 102 * because those can optimize to an unaligned load (which often is fine, but not 103 * for mmap'd /dev/mem which has special memory attributes). 104 */ 105 static inline uint8_t 106 SMBIOS_GET8(const caddr_t base, int off) 107 { 108 return (base[off]); 109 } 110 111 static inline uint16_t 112 SMBIOS_GET16(const caddr_t base, int off) 113 { 114 uint16_t v; 115 116 memcpy(&v, base + off, sizeof(v)); 117 return (le16toh(v)); 118 } 119 120 static inline uint32_t 121 SMBIOS_GET32(const caddr_t base, int off) 122 { 123 uint32_t v; 124 125 memcpy(&v, base + off, sizeof(v)); 126 return (le32toh(v)); 127 } 128 129 static inline uint64_t 130 SMBIOS_GET64(const caddr_t base, int off) 131 { 132 uint64_t v; 133 134 memcpy(&v, base + off, sizeof(v)); 135 return (le64toh(v)); 136 } 137 138 #define SMBIOS_GETLEN(base) SMBIOS_GET8(base, 0x01) 139 #define SMBIOS_GETSTR(base) ((base) + SMBIOS_GETLEN(base)) 140 141 struct smbios_attr { 142 int is_64bit_ep; 143 caddr_t addr; 144 size_t length; 145 size_t count; 146 int major; 147 int minor; 148 int ver; 149 const char* bios_vendor; 150 const char* maker; 151 const char* product; 152 uint32_t enabled_memory; 153 uint32_t old_enabled_memory; 154 uint8_t enabled_sockets; 155 uint8_t populated_sockets; 156 }; 157 158 static struct smbios_attr smbios; 159 160 static uint8_t 161 smbios_checksum(const caddr_t addr, const uint8_t len) 162 { 163 uint8_t sum; 164 int i; 165 166 for (sum = 0, i = 0; i < len; i++) 167 sum += SMBIOS_GET8(addr, i); 168 return (sum); 169 } 170 171 static caddr_t 172 smbios_sigsearch(const caddr_t addr, const uint32_t len) 173 { 174 caddr_t cp; 175 caddr_t v2_p = NULL; 176 177 /* Search on 16-byte boundaries. */ 178 for (cp = addr; cp < addr + len; cp += SMBIOS_STEP) { 179 /* v3.0, 64-bit Entry point */ 180 if (strncmp(cp, SMBIOS3_SIG, sizeof(SMBIOS3_SIG) - 1) == 0 && 181 /* 182 * The specification only guarantees the presence of the 183 * Structure Table Maximum Size and Address Entry fields at 184 * offsets 0x0c and 0x10 if the Entry Point Revision is not 185 * 0. 186 */ 187 SMBIOS_GET8(cp, 0x0a) != 0 && 188 smbios_checksum(cp, SMBIOS_GET8(cp, 0x06)) == 0) { 189 #if __SIZEOF_SIZE_T__ < 8 190 uint64_t end_addr; 191 192 end_addr = SMBIOS_GET64(cp, 0x10) + /* Start address. */ 193 SMBIOS_GET32(cp, 0x0c); /* Maximum size. */ 194 /* 195 * Is the table (or part of it) located above what we 196 * can address? 197 */ 198 if ((size_t)end_addr != end_addr) 199 /* Yes, give it up. */ 200 continue; 201 #endif 202 smbios.is_64bit_ep = 1; 203 return (cp); 204 } 205 206 /* v2.1, 32-bit Entry point */ 207 if (strncmp(cp, SMBIOS_SIG, sizeof(SMBIOS_SIG) - 1) == 0 && 208 smbios_checksum(cp, SMBIOS_GET8(cp, 0x05)) == 0 && 209 strncmp(cp + 0x10, SMBIOS_DMI_SIG, 5) == 0 && 210 smbios_checksum(cp + 0x10, 0x0f) == 0) { 211 /* 212 * Note that we saw this entry point, but don't return 213 * it right now as we favor the 64-bit one if present. 214 */ 215 v2_p = cp; 216 } 217 } 218 return (v2_p); 219 } 220 221 static const char* 222 smbios_getstring(caddr_t addr, const int offset) 223 { 224 caddr_t cp; 225 int i, idx; 226 227 idx = SMBIOS_GET8(addr, offset); 228 if (idx != 0) { 229 cp = SMBIOS_GETSTR(addr); 230 for (i = 1; i < idx; i++) 231 cp += strlen(cp) + 1; 232 return cp; 233 } 234 return (NULL); 235 } 236 237 static void 238 smbios_setenv(const char *name, caddr_t addr, const int offset) 239 { 240 const char* val; 241 242 val = smbios_getstring(addr, offset); 243 if (val != NULL) 244 setenv(name, val, 1); 245 } 246 247 #ifdef SMBIOS_SERIAL_NUMBERS 248 249 #define UUID_SIZE 16 250 #define UUID_TYPE uint32_t 251 #define UUID_STEP sizeof(UUID_TYPE) 252 #define UUID_ALL_BITS (UUID_SIZE / UUID_STEP) 253 #define UUID_GET(base, off) SMBIOS_GET32(base, off) 254 255 static void 256 smbios_setuuid(const char *name, const caddr_t addr, const int ver __unused) 257 { 258 char uuid[37]; 259 int byteorder, i, ones, zeros; 260 UUID_TYPE n; 261 uint32_t f1; 262 uint16_t f2, f3; 263 264 for (i = 0, ones = 0, zeros = 0; i < UUID_SIZE; i += UUID_STEP) { 265 n = UUID_GET(addr, i) + 1; 266 if (zeros == 0 && n == 0) 267 ones++; 268 else if (ones == 0 && n == 1) 269 zeros++; 270 else 271 break; 272 } 273 274 if (ones != UUID_ALL_BITS && zeros != UUID_ALL_BITS) { 275 /* 276 * 3.3.2.1 System UUID 277 * 278 * "Although RFC 4122 recommends network byte order for all 279 * fields, the PC industry (including the ACPI, UEFI, and 280 * Microsoft specifications) has consistently used 281 * little-endian byte encoding for the first three fields: 282 * time_low, time_mid, time_hi_and_version. The same encoding, 283 * also known as wire format, should also be used for the 284 * SMBIOS representation of the UUID." 285 * 286 * Note: We use network byte order for backward compatibility 287 * unless SMBIOS version is 2.6+ or little-endian is forced. 288 */ 289 #if defined(SMBIOS_LITTLE_ENDIAN_UUID) 290 byteorder = LITTLE_ENDIAN; 291 #elif defined(SMBIOS_NETWORK_ENDIAN_UUID) 292 byteorder = BIG_ENDIAN; 293 #else 294 byteorder = ver < 0x0206 ? BIG_ENDIAN : LITTLE_ENDIAN; 295 #endif 296 if (byteorder != LITTLE_ENDIAN) { 297 f1 = ntohl(SMBIOS_GET32(addr, 0)); 298 f2 = ntohs(SMBIOS_GET16(addr, 4)); 299 f3 = ntohs(SMBIOS_GET16(addr, 6)); 300 } else { 301 f1 = le32toh(SMBIOS_GET32(addr, 0)); 302 f2 = le16toh(SMBIOS_GET16(addr, 4)); 303 f3 = le16toh(SMBIOS_GET16(addr, 6)); 304 } 305 sprintf(uuid, 306 "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", 307 f1, f2, f3, SMBIOS_GET8(addr, 8), SMBIOS_GET8(addr, 9), 308 SMBIOS_GET8(addr, 10), SMBIOS_GET8(addr, 11), 309 SMBIOS_GET8(addr, 12), SMBIOS_GET8(addr, 13), 310 SMBIOS_GET8(addr, 14), SMBIOS_GET8(addr, 15)); 311 setenv(name, uuid, 1); 312 } 313 } 314 315 #undef UUID_SIZE 316 #undef UUID_TYPE 317 #undef UUID_STEP 318 #undef UUID_ALL_BITS 319 #undef UUID_GET 320 321 #endif 322 323 static const char * 324 smbios_parse_chassis_type(caddr_t addr) 325 { 326 int type; 327 328 type = SMBIOS_GET8(addr, 0x5); 329 switch (type) { 330 case 0x1: 331 return ("Other"); 332 case 0x2: 333 return ("Unknown"); 334 case 0x3: 335 return ("Desktop"); 336 case 0x4: 337 return ("Low Profile Desktop"); 338 case 0x5: 339 return ("Pizza Box"); 340 case 0x6: 341 return ("Mini Tower"); 342 case 0x7: 343 return ("Tower"); 344 case 0x8: 345 return ("Portable"); 346 case 0x9: 347 return ("Laptop"); 348 case 0xA: 349 return ("Notebook"); 350 case 0xB: 351 return ("Hand Held"); 352 case 0xC: 353 return ("Docking Station"); 354 case 0xD: 355 return ("All in One"); 356 case 0xE: 357 return ("Sub Notebook"); 358 case 0xF: 359 return ("Lunch Box"); 360 case 0x10: 361 return ("Space-saving"); 362 case 0x11: 363 return ("Main Server Chassis"); 364 case 0x12: 365 return ("Expansion Chassis"); 366 case 0x13: 367 return ("SubChassis"); 368 case 0x14: 369 return ("Bus Expansion Chassis"); 370 case 0x15: 371 return ("Peripheral Chassis"); 372 case 0x16: 373 return ("RAID Chassis"); 374 case 0x17: 375 return ("Rack Mount Chassis"); 376 case 0x18: 377 return ("Sealed-case PC"); 378 case 0x19: 379 return ("Multi-system chassis"); 380 case 0x1A: 381 return ("Compact PCI"); 382 case 0x1B: 383 return ("Advanced TCA"); 384 case 0x1C: 385 return ("Blade"); 386 case 0x1D: 387 return ("Blade Enclosure"); 388 case 0x1E: 389 return ("Tablet"); 390 case 0x1F: 391 return ("Convertible"); 392 case 0x20: 393 return ("Detachable"); 394 case 0x21: 395 return ("IoT Gateway"); 396 case 0x22: 397 return ("Embedded PC"); 398 case 0x23: 399 return ("Mini PC"); 400 case 0x24: 401 return ("Stick PC"); 402 } 403 404 return ("Undefined"); 405 } 406 407 static caddr_t 408 smbios_parse_table(const caddr_t addr) 409 { 410 caddr_t cp; 411 int proc, size, osize, type; 412 uint8_t bios_minor, bios_major; 413 char buf[16]; 414 415 type = SMBIOS_GET8(addr, 0); /* 3.1.2 Structure Header Format */ 416 switch(type) { 417 case 0: /* 3.3.1 BIOS Information (Type 0) */ 418 smbios_setenv("smbios.bios.vendor", addr, 0x04); 419 smbios_setenv("smbios.bios.version", addr, 0x05); 420 smbios_setenv("smbios.bios.reldate", addr, 0x08); 421 bios_major = SMBIOS_GET8(addr, 0x14); 422 bios_minor = SMBIOS_GET8(addr, 0x15); 423 if (bios_minor != 0xFF && bios_major != 0xFF) { 424 snprintf(buf, sizeof(buf), "%u.%u", 425 bios_major, bios_minor); 426 setenv("smbios.bios.revision", buf, 1); 427 } 428 break; 429 430 case 1: /* 3.3.2 System Information (Type 1) */ 431 smbios_setenv("smbios.system.maker", addr, 0x04); 432 smbios_setenv("smbios.system.product", addr, 0x05); 433 smbios_setenv("smbios.system.version", addr, 0x06); 434 #ifdef SMBIOS_SERIAL_NUMBERS 435 smbios_setenv("smbios.system.serial", addr, 0x07); 436 smbios_setuuid("smbios.system.uuid", addr + 0x08, smbios.ver); 437 #endif 438 if (smbios.major > 2 || 439 (smbios.major == 2 && smbios.minor >= 4)) { 440 smbios_setenv("smbios.system.sku", addr, 0x19); 441 smbios_setenv("smbios.system.family", addr, 0x1a); 442 } 443 break; 444 445 case 2: /* 3.3.3 Base Board (or Module) Information (Type 2) */ 446 smbios_setenv("smbios.planar.maker", addr, 0x04); 447 smbios_setenv("smbios.planar.product", addr, 0x05); 448 smbios_setenv("smbios.planar.version", addr, 0x06); 449 #ifdef SMBIOS_SERIAL_NUMBERS 450 smbios_setenv("smbios.planar.serial", addr, 0x07); 451 smbios_setenv("smbios.planar.tag", addr, 0x08); 452 #endif 453 smbios_setenv("smbios.planar.location", addr, 0x0a); 454 break; 455 456 case 3: /* 3.3.4 System Enclosure or Chassis (Type 3) */ 457 smbios_setenv("smbios.chassis.maker", addr, 0x04); 458 setenv("smbios.chassis.type", smbios_parse_chassis_type(addr), 1); 459 smbios_setenv("smbios.chassis.version", addr, 0x06); 460 #ifdef SMBIOS_SERIAL_NUMBERS 461 smbios_setenv("smbios.chassis.serial", addr, 0x07); 462 smbios_setenv("smbios.chassis.tag", addr, 0x08); 463 #endif 464 break; 465 466 case 4: /* 3.3.5 Processor Information (Type 4) */ 467 smbios_setenv("smbios.processor.version", addr, 0x10); 468 /* 469 * Offset 18h: Processor Status 470 * 471 * Bit 7 Reserved, must be 0 472 * Bit 6 CPU Socket Populated 473 * 1 - CPU Socket Populated 474 * 0 - CPU Socket Unpopulated 475 * Bit 5:3 Reserved, must be zero 476 * Bit 2:0 CPU Status 477 * 0h - Unknown 478 * 1h - CPU Enabled 479 * 2h - CPU Disabled by User via BIOS Setup 480 * 3h - CPU Disabled by BIOS (POST Error) 481 * 4h - CPU is Idle, waiting to be enabled 482 * 5-6h - Reserved 483 * 7h - Other 484 */ 485 proc = SMBIOS_GET8(addr, 0x18); 486 if ((proc & 0x07) == 1) 487 smbios.enabled_sockets++; 488 if ((proc & 0x40) != 0) 489 smbios.populated_sockets++; 490 break; 491 492 case 6: /* 3.3.7 Memory Module Information (Type 6, Obsolete) */ 493 /* 494 * Offset 0Ah: Enabled Size 495 * 496 * Bit 7 Bank connection 497 * 1 - Double-bank connection 498 * 0 - Single-bank connection 499 * Bit 6:0 Size (n), where 2**n is the size in MB 500 * 7Dh - Not determinable (Installed Size only) 501 * 7Eh - Module is installed, but no memory 502 * has been enabled 503 * 7Fh - Not installed 504 */ 505 osize = SMBIOS_GET8(addr, 0x0a) & 0x7f; 506 if (osize > 0 && osize < 22) 507 smbios.old_enabled_memory += 1 << (osize + 10); 508 break; 509 510 case 17: /* 3.3.18 Memory Device (Type 17) */ 511 /* 512 * Offset 0Ch: Size 513 * 514 * Bit 15 Granularity 515 * 1 - Value is in kilobytes units 516 * 0 - Value is in megabytes units 517 * Bit 14:0 Size 518 */ 519 size = SMBIOS_GET16(addr, 0x0c); 520 if (size != 0 && size != 0xffff) 521 smbios.enabled_memory += (size & 0x8000) != 0 ? 522 (size & 0x7fff) : (size << 10); 523 break; 524 525 case SMBIOS_EOT_TYPE: /* 3.3.42 End-of-Table (Type 127) */ 526 return (NULL); 527 528 default: /* skip other types */ 529 break; 530 } 531 532 /* Find structure terminator. */ 533 cp = SMBIOS_GETSTR(addr); 534 while (SMBIOS_GET16(cp, 0) != 0) 535 cp++; 536 537 return (cp + 2); 538 } 539 540 static caddr_t 541 smbios_find_struct(int type) 542 { 543 caddr_t dmi; 544 size_t i; 545 caddr_t ep; 546 547 if (smbios.addr == NULL) 548 return (NULL); 549 550 ep = smbios.addr + smbios.length; 551 for (dmi = smbios.addr, i = 0; 552 dmi < ep && i < smbios.count; i++) { 553 const uint8_t seen_type = SMBIOS_GET8(dmi, 0); 554 555 if (seen_type == type) 556 return (dmi); 557 if (seen_type == SMBIOS_EOT_TYPE) 558 /* End of table. */ 559 break; 560 /* Find structure terminator. */ 561 dmi = SMBIOS_GETSTR(dmi); 562 while (SMBIOS_GET16(dmi, 0) != 0 && dmi < ep) 563 dmi++; 564 /* Skip it. */ 565 dmi += 2; 566 } 567 568 return (NULL); 569 } 570 571 static void 572 smbios_probe(const caddr_t addr) 573 { 574 caddr_t saddr, info; 575 uintptr_t paddr; 576 int maj_off; 577 int min_off; 578 579 /* Search signatures and validate checksums. */ 580 saddr = addr != NULL ? smbios_sigsearch(addr, 1) : 581 smbios_sigsearch(PTOV(SMBIOS_START), SMBIOS_LENGTH); 582 if (saddr == NULL) 583 return; 584 585 if (smbios.is_64bit_ep) { 586 /* Structure Table Length */ 587 smbios.length = SMBIOS_GET32(saddr, 0x0c); 588 /* Structure Table Address */ 589 paddr = SMBIOS_GET64(saddr, 0x10); 590 /* Not present in V3, set it to the maximum value (no limit). */ 591 smbios.count = -1; 592 /* 593 * No BCD revision in V3, we'll determine the version thanks to 594 * the major and minor fields below. 595 */ 596 smbios.ver = 0; 597 maj_off = 0x07; 598 min_off = 0x08; 599 } else { 600 /* Structure Table Length */ 601 smbios.length = SMBIOS_GET16(saddr, 0x16); 602 /* Structure Table Address */ 603 paddr = SMBIOS_GET32(saddr, 0x18); 604 /* No. of SMBIOS Structures */ 605 smbios.count = SMBIOS_GET16(saddr, 0x1c); 606 /* SMBIOS BCD Revision */ 607 smbios.ver = SMBIOS_GET8(saddr, 0x1e); 608 if (smbios.ver != 0) { 609 smbios.major = smbios.ver >> 4; 610 smbios.minor = smbios.ver & 0x0f; 611 if (smbios.major > 9 || smbios.minor > 9) 612 smbios.ver = 0; 613 } 614 maj_off = 0x06; 615 min_off = 0x07; 616 } 617 618 619 if (smbios.ver == 0) { 620 /* 621 * v3 table, or v2 with BCD revision being 0 or bad. Use the 622 * major and minor version fields. 623 */ 624 smbios.major = SMBIOS_GET8(saddr, maj_off); 625 smbios.minor = SMBIOS_GET8(saddr, min_off); 626 } 627 smbios.ver = (smbios.major << 8) | smbios.minor; 628 smbios.addr = PTOV(paddr); 629 630 /* Get system information from SMBIOS */ 631 info = smbios_find_struct(0x00); 632 if (info != NULL) { 633 smbios.bios_vendor = smbios_getstring(info, 0x04); 634 } 635 info = smbios_find_struct(0x01); 636 if (info != NULL) { 637 smbios.maker = smbios_getstring(info, 0x04); 638 smbios.product = smbios_getstring(info, 0x05); 639 } 640 } 641 642 caddr_t 643 smbios_detect(const caddr_t addr) 644 { 645 char buf[16]; 646 caddr_t dmi; 647 size_t i; 648 649 smbios_probe(addr); 650 if (smbios.addr == NULL) 651 return (NULL); 652 653 for (dmi = smbios.addr, i = 0; dmi != NULL && 654 dmi < smbios.addr + smbios.length && i < smbios.count; i++) 655 dmi = smbios_parse_table(dmi); 656 657 setenv("smbios.entry_point_type", smbios.is_64bit_ep ? 658 "v3 (64-bit)" : "v2.1 (32-bit)", 1); 659 sprintf(buf, "%d.%d", smbios.major, smbios.minor); 660 setenv("smbios.version", buf, 1); 661 if (smbios.enabled_memory > 0 || smbios.old_enabled_memory > 0) { 662 sprintf(buf, "%u", smbios.enabled_memory > 0 ? 663 smbios.enabled_memory : smbios.old_enabled_memory); 664 setenv("smbios.memory.enabled", buf, 1); 665 } 666 if (smbios.enabled_sockets > 0) { 667 sprintf(buf, "%u", smbios.enabled_sockets); 668 setenv("smbios.socket.enabled", buf, 1); 669 } 670 if (smbios.populated_sockets > 0) { 671 sprintf(buf, "%u", smbios.populated_sockets); 672 setenv("smbios.socket.populated", buf, 1); 673 } 674 675 return (smbios.addr); 676 } 677 678 static int 679 smbios_match_str(const char* s1, const char* s2) 680 { 681 return (s1 == NULL || (s2 != NULL && !strcmp(s1, s2))); 682 } 683 684 int 685 smbios_match(const char* bios_vendor, const char* maker, 686 const char* product) 687 { 688 static bool probed = false; 689 690 /* 691 * This routine is called only from non-EFI loaders on determining the 692 * amount of usable memory. In particular, it is so before malloc() can 693 * be used, so before smbios_detect() can be called (as it uses 694 * setenv()). Consequently, since smbios_probe() is not exported, we 695 * ensure it has been called beforehand to fetch into the static 696 * 'smbios' structure the metadata that is to be matched. 697 */ 698 if (!probed) { 699 probed = true; 700 smbios_probe(NULL); 701 } 702 703 return (smbios_match_str(bios_vendor, smbios.bios_vendor) && 704 smbios_match_str(maker, smbios.maker) && 705 smbios_match_str(product, smbios.product)); 706 } 707