1 /** @file 2 Native Platform Configuration Database (PCD) Protocol 3 4 Different with the EFI_PCD_PROTOCOL defined in PI 1.2 specification, the native 5 PCD protocol provide interfaces for dynamic and dynamic-ex type PCD. 6 The interfaces in dynamic type PCD do not require the token space guid as parameter, 7 but interfaces in dynamic-ex type PCD require token space guid as parameter. 8 9 Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR> 10 This program and the accompanying materials are licensed and made available under 11 the terms and conditions of the BSD License that accompanies this distribution. 12 The full text of the license may be found at 13 http://opensource.org/licenses/bsd-license.php. 14 15 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 16 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 17 18 **/ 19 20 #ifndef __PCD_H__ 21 #define __PCD_H__ 22 23 extern EFI_GUID gPcdProtocolGuid; 24 25 #define PCD_PROTOCOL_GUID \ 26 { 0x11b34006, 0xd85b, 0x4d0a, { 0xa2, 0x90, 0xd5, 0xa5, 0x71, 0x31, 0xe, 0xf7 } } 27 28 #define PCD_INVALID_TOKEN_NUMBER ((UINTN) 0) 29 30 31 /** 32 Sets the SKU value for subsequent calls to set or get PCD token values. 33 34 SetSku() sets the SKU Id to be used for subsequent calls to set or get PCD values. 35 SetSku() is normally called only once by the system. 36 37 For each item (token), the database can hold a single value that applies to all SKUs, 38 or multiple values, where each value is associated with a specific SKU Id. Items with multiple, 39 SKU-specific values are called SKU enabled. 40 41 The SKU Id of zero is reserved as a default. The valid SkuId range is 1 to 255. 42 For tokens that are not SKU enabled, the system ignores any set SKU Id and works with the 43 single value for that token. For SKU-enabled tokens, the system will use the SKU Id set by the 44 last call to SetSku(). If no SKU Id is set or the currently set SKU Id isn't valid for the specified token, 45 the system uses the default SKU Id. If the system attempts to use the default SKU Id and no value has been 46 set for that Id, the results are unpredictable. 47 48 @param[in] SkuId The SKU value that will be used when the PCD service will retrieve and 49 set values associated with a PCD token. 50 51 52 **/ 53 typedef 54 VOID 55 (EFIAPI *PCD_PROTOCOL_SET_SKU)( 56 IN UINTN SkuId 57 ); 58 59 60 61 /** 62 Retrieves an 8-bit value for a given PCD token. 63 64 Retrieves the current byte-sized value for a PCD token number. 65 If the TokenNumber is invalid, the results are unpredictable. 66 67 @param[in] TokenNumber The PCD token number. 68 69 @return The UINT8 value. 70 71 **/ 72 typedef 73 UINT8 74 (EFIAPI *PCD_PROTOCOL_GET8)( 75 IN UINTN TokenNumber 76 ); 77 78 79 80 /** 81 Retrieves a 16-bit value for a given PCD token. 82 83 Retrieves the current 16-bit value for a PCD token number. 84 If the TokenNumber is invalid, the results are unpredictable. 85 86 @param[in] TokenNumber The PCD token number. 87 88 @return The UINT16 value. 89 90 **/ 91 typedef 92 UINT16 93 (EFIAPI *PCD_PROTOCOL_GET16)( 94 IN UINTN TokenNumber 95 ); 96 97 98 99 /** 100 Retrieves a 32-bit value for a given PCD token. 101 102 Retrieves the current 32-bit value for a PCD token number. 103 If the TokenNumber is invalid, the results are unpredictable. 104 105 @param[in] TokenNumber The PCD token number. 106 107 @return The UINT32 value. 108 109 **/ 110 typedef 111 UINT32 112 (EFIAPI *PCD_PROTOCOL_GET32)( 113 IN UINTN TokenNumber 114 ); 115 116 117 118 /** 119 Retrieves a 64-bit value for a given PCD token. 120 121 Retrieves the current 64-bit value for a PCD token number. 122 If the TokenNumber is invalid, the results are unpredictable. 123 124 @param[in] TokenNumber The PCD token number. 125 126 @return The UINT64 value. 127 128 **/ 129 typedef 130 UINT64 131 (EFIAPI *PCD_PROTOCOL_GET64)( 132 IN UINTN TokenNumber 133 ); 134 135 136 137 /** 138 Retrieves a pointer to a value for a given PCD token. 139 140 Retrieves the current pointer to the buffer for a PCD token number. 141 Do not make any assumptions about the alignment of the pointer that 142 is returned by this function call. If the TokenNumber is invalid, 143 the results are unpredictable. 144 145 @param[in] TokenNumber The PCD token number. 146 147 @return The pointer to the buffer to be retrived. 148 149 **/ 150 typedef 151 VOID * 152 (EFIAPI *PCD_PROTOCOL_GET_POINTER)( 153 IN UINTN TokenNumber 154 ); 155 156 157 158 /** 159 Retrieves a Boolean value for a given PCD token. 160 161 Retrieves the current boolean value for a PCD token number. 162 Do not make any assumptions about the alignment of the pointer that 163 is returned by this function call. If the TokenNumber is invalid, 164 the results are unpredictable. 165 166 @param[in] TokenNumber The PCD token number. 167 168 @return The Boolean value. 169 170 **/ 171 typedef 172 BOOLEAN 173 (EFIAPI *PCD_PROTOCOL_GET_BOOLEAN)( 174 IN UINTN TokenNumber 175 ); 176 177 178 179 /** 180 Retrieves the size of the value for a given PCD token. 181 182 Retrieves the current size of a particular PCD token. 183 If the TokenNumber is invalid, the results are unpredictable. 184 185 @param[in] TokenNumber The PCD token number. 186 187 @return The size of the value for the PCD token. 188 189 **/ 190 typedef 191 UINTN 192 (EFIAPI *PCD_PROTOCOL_GET_SIZE)( 193 IN UINTN TokenNumber 194 ); 195 196 197 198 /** 199 Retrieves an 8-bit value for a given PCD token. 200 201 Retrieves the 8-bit value of a particular PCD token. 202 If the TokenNumber is invalid or the token space 203 specified by Guid does not exist, the results are 204 unpredictable. 205 206 @param[in] Guid The token space for the token number. 207 @param[in] TokenNumber The PCD token number. 208 209 @return The size 8-bit value for the PCD token. 210 211 **/ 212 typedef 213 UINT8 214 (EFIAPI *PCD_PROTOCOL_GET_EX_8)( 215 IN CONST EFI_GUID *Guid, 216 IN UINTN TokenNumber 217 ); 218 219 220 221 /** 222 Retrieves a 16-bit value for a given PCD token. 223 224 Retrieves the 16-bit value of a particular PCD token. 225 If the TokenNumber is invalid or the token space 226 specified by Guid does not exist, the results are 227 unpredictable. 228 229 @param[in] Guid The token space for the token number. 230 @param[in] TokenNumber The PCD token number. 231 232 @return The size 16-bit value for the PCD token. 233 234 **/ 235 typedef 236 UINT16 237 (EFIAPI *PCD_PROTOCOL_GET_EX_16)( 238 IN CONST EFI_GUID *Guid, 239 IN UINTN TokenNumber 240 ); 241 242 243 244 /** 245 Retrieves a 32-bit value for a given PCD token. 246 247 Retrieves the 32-bit value of a particular PCD token. 248 If the TokenNumber is invalid or the token space 249 specified by Guid does not exist, the results are 250 unpredictable. 251 252 @param[in] Guid The token space for the token number. 253 @param[in] TokenNumber The PCD token number. 254 255 @return The size 32-bit value for the PCD token. 256 257 **/ 258 typedef 259 UINT32 260 (EFIAPI *PCD_PROTOCOL_GET_EX_32)( 261 IN CONST EFI_GUID *Guid, 262 IN UINTN TokenNumber 263 ); 264 265 266 267 /** 268 Retrieves an 64-bit value for a given PCD token. 269 270 Retrieves the 64-bit value of a particular PCD token. 271 If the TokenNumber is invalid or the token space 272 specified by Guid does not exist, the results are 273 unpredictable. 274 275 @param[in] Guid The token space for the token number. 276 @param[in] TokenNumber The PCD token number. 277 278 @return The size 64-bit value for the PCD token. 279 280 **/ 281 typedef 282 UINT64 283 (EFIAPI *PCD_PROTOCOL_GET_EX_64)( 284 IN CONST EFI_GUID *Guid, 285 IN UINTN TokenNumber 286 ); 287 288 289 290 /** 291 Retrieves a pointer to a value for a given PCD token. 292 293 Retrieves the current pointer to the buffer for a PCD token number. 294 Do not make any assumptions about the alignment of the pointer that 295 is returned by this function call. If the TokenNumber is invalid, 296 the results are unpredictable. 297 298 @param[in] Guid The token space for the token number. 299 @param[in] TokenNumber The PCD token number. 300 301 @return The pointer to the buffer to be retrieved. 302 303 **/ 304 typedef 305 VOID * 306 (EFIAPI *PCD_PROTOCOL_GET_EX_POINTER)( 307 IN CONST EFI_GUID *Guid, 308 IN UINTN TokenNumber 309 ); 310 311 312 313 /** 314 Retrieves a Boolean value for a given PCD token. 315 316 Retrieves the Boolean value of a particular PCD token. 317 If the TokenNumber is invalid or the token space 318 specified by Guid does not exist, the results are 319 unpredictable. 320 321 @param[in] Guid The token space for the token number. 322 @param[in] TokenNumber The PCD token number. 323 324 @return The size Boolean value for the PCD token. 325 326 **/ 327 typedef 328 BOOLEAN 329 (EFIAPI *PCD_PROTOCOL_GET_EX_BOOLEAN)( 330 IN CONST EFI_GUID *Guid, 331 IN UINTN TokenNumber 332 ); 333 334 335 336 /** 337 Retrieves the size of the value for a given PCD token. 338 339 Retrieves the current size of a particular PCD token. 340 If the TokenNumber is invalid, the results are unpredictable. 341 342 @param[in] Guid The token space for the token number. 343 @param[in] TokenNumber The PCD token number. 344 345 @return The size of the value for the PCD token. 346 347 **/ 348 typedef 349 UINTN 350 (EFIAPI *PCD_PROTOCOL_GET_EX_SIZE)( 351 IN CONST EFI_GUID *Guid, 352 IN UINTN TokenNumber 353 ); 354 355 356 357 /** 358 Sets an 8-bit value for a given PCD token. 359 360 When the PCD service sets a value, it will check to ensure that the 361 size of the value being set is compatible with the Token's existing definition. 362 If it is not, an error will be returned. 363 364 @param[in] TokenNumber The PCD token number. 365 @param[in] Value The value to set for the PCD token. 366 367 @retval EFI_SUCCESS The procedure returned successfully. 368 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 369 being set was incompatible with a call to this function. 370 Use GetSize() to retrieve the size of the target data. 371 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 372 373 **/ 374 typedef 375 EFI_STATUS 376 (EFIAPI *PCD_PROTOCOL_SET8)( 377 IN UINTN TokenNumber, 378 IN UINT8 Value 379 ); 380 381 382 383 /** 384 Sets a 16-bit value for a given PCD token. 385 386 When the PCD service sets a value, it will check to ensure that the 387 size of the value being set is compatible with the Token's existing definition. 388 If it is not, an error will be returned. 389 390 @param[in] TokenNumber The PCD token number. 391 @param[in] Value The value to set for the PCD token. 392 393 @retval EFI_SUCCESS The procedure returned successfully. 394 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 395 being set was incompatible with a call to this function. 396 Use GetSize() to retrieve the size of the target data. 397 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 398 399 **/ 400 typedef 401 EFI_STATUS 402 (EFIAPI *PCD_PROTOCOL_SET16)( 403 IN UINTN TokenNumber, 404 IN UINT16 Value 405 ); 406 407 408 409 /** 410 Sets a 32-bit value for a given PCD token. 411 412 When the PCD service sets a value, it will check to ensure that the 413 size of the value being set is compatible with the Token's existing definition. 414 If it is not, an error will be returned. 415 416 @param[in] TokenNumber The PCD token number. 417 @param[in] Value The value to set for the PCD token. 418 419 @retval EFI_SUCCESS The procedure returned successfully. 420 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 421 being set was incompatible with a call to this function. 422 Use GetSize() to retrieve the size of the target data. 423 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 424 425 **/ 426 typedef 427 EFI_STATUS 428 (EFIAPI *PCD_PROTOCOL_SET32)( 429 IN UINTN TokenNumber, 430 IN UINT32 Value 431 ); 432 433 434 435 /** 436 Sets a 64-bit value for a given PCD token. 437 438 When the PCD service sets a value, it will check to ensure that the 439 size of the value being set is compatible with the Token's existing definition. 440 If it is not, an error will be returned. 441 442 @param[in] TokenNumber The PCD token number. 443 @param[in] Value The value to set for the PCD token. 444 445 @retval EFI_SUCCESS The procedure returned successfully. 446 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 447 being set was incompatible with a call to this function. 448 Use GetSize() to retrieve the size of the target data. 449 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 450 451 **/ 452 typedef 453 EFI_STATUS 454 (EFIAPI *PCD_PROTOCOL_SET64)( 455 IN UINTN TokenNumber, 456 IN UINT64 Value 457 ); 458 459 460 461 /** 462 Sets a value of a specified size for a given PCD token. 463 464 When the PCD service sets a value, it will check to ensure that the 465 size of the value being set is compatible with the Token's existing definition. 466 If it is not, an error will be returned. 467 468 @param[in] TokenNumber The PCD token number. 469 @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. 470 On input, if the SizeOfValue is greater than the maximum size supported 471 for this TokenNumber then the output value of SizeOfValue will reflect 472 the maximum size supported for this TokenNumber. 473 @param[in] Buffer The buffer to set for the PCD token. 474 475 @retval EFI_SUCCESS The procedure returned successfully. 476 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 477 being set was incompatible with a call to this function. 478 Use GetSize() to retrieve the size of the target data. 479 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 480 481 **/ 482 typedef 483 EFI_STATUS 484 (EFIAPI *PCD_PROTOCOL_SET_POINTER)( 485 IN UINTN TokenNumber, 486 IN OUT UINTN *SizeOfBuffer, 487 IN VOID *Buffer 488 ); 489 490 491 492 /** 493 Sets a Boolean value for a given PCD token. 494 495 When the PCD service sets a value, it will check to ensure that the 496 size of the value being set is compatible with the Token's existing definition. 497 If it is not, an error will be returned. 498 499 @param[in] TokenNumber The PCD token number. 500 @param[in] Value The value to set for the PCD token. 501 502 @retval EFI_SUCCESS The procedure returned successfully. 503 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 504 being set was incompatible with a call to this function. 505 Use GetSize() to retrieve the size of the target data. 506 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 507 508 **/ 509 typedef 510 EFI_STATUS 511 (EFIAPI *PCD_PROTOCOL_SET_BOOLEAN)( 512 IN UINTN TokenNumber, 513 IN BOOLEAN Value 514 ); 515 516 517 518 /** 519 Sets an 8-bit value for a given PCD token. 520 521 When the PCD service sets a value, it will check to ensure that the 522 size of the value being set is compatible with the Token's existing definition. 523 If it is not, an error will be returned. 524 525 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 526 @param[in] TokenNumber The PCD token number. 527 @param[in] Value The value to set for the PCD token. 528 529 @retval EFI_SUCCESS The procedure returned successfully. 530 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 531 being set was incompatible with a call to this function. 532 Use GetSize() to retrieve the size of the target data. 533 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 534 535 **/ 536 typedef 537 EFI_STATUS 538 (EFIAPI *PCD_PROTOCOL_SET_EX_8)( 539 IN CONST EFI_GUID *Guid, 540 IN UINTN TokenNumber, 541 IN UINT8 Value 542 ); 543 544 545 546 /** 547 Sets an 16-bit value for a given PCD token. 548 549 When the PCD service sets a value, it will check to ensure that the 550 size of the value being set is compatible with the Token's existing definition. 551 If it is not, an error will be returned. 552 553 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 554 @param[in] TokenNumber The PCD token number. 555 @param[in] Value The value to set for the PCD token. 556 557 @retval EFI_SUCCESS The procedure returned successfully. 558 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 559 being set was incompatible with a call to this function. 560 Use GetSize() to retrieve the size of the target data. 561 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 562 563 **/ 564 typedef 565 EFI_STATUS 566 (EFIAPI *PCD_PROTOCOL_SET_EX_16)( 567 IN CONST EFI_GUID *Guid, 568 IN UINTN TokenNumber, 569 IN UINT16 Value 570 ); 571 572 573 574 /** 575 Sets a 32-bit value for a given PCD token. 576 577 When the PCD service sets a value, it will check to ensure that the 578 size of the value being set is compatible with the Token's existing definition. 579 If it is not, an error will be returned. 580 581 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 582 @param[in] TokenNumber The PCD token number. 583 @param[in] Value The value to set for the PCD token. 584 585 @retval EFI_SUCCESS The procedure returned successfully. 586 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 587 being set was incompatible with a call to this function. 588 Use GetSize() to retrieve the size of the target data. 589 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 590 591 **/ 592 typedef 593 EFI_STATUS 594 (EFIAPI *PCD_PROTOCOL_SET_EX_32)( 595 IN CONST EFI_GUID *Guid, 596 IN UINTN TokenNumber, 597 IN UINT32 Value 598 ); 599 600 601 602 /** 603 Sets a 64-bit value for a given PCD token. 604 605 When the PCD service sets a value, it will check to ensure that the 606 size of the value being set is compatible with the Token's existing definition. 607 If it is not, an error will be returned. 608 609 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 610 @param[in] TokenNumber The PCD token number. 611 @param[in] Value The value to set for the PCD token. 612 613 @retval EFI_SUCCESS The procedure returned successfully. 614 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 615 being set was incompatible with a call to this function. 616 Use GetSize() to retrieve the size of the target data. 617 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 618 619 **/ 620 typedef 621 EFI_STATUS 622 (EFIAPI *PCD_PROTOCOL_SET_EX_64)( 623 IN CONST EFI_GUID *Guid, 624 IN UINTN TokenNumber, 625 IN UINT64 Value 626 ); 627 628 629 630 /** 631 Sets a value of a specified size for a given PCD token. 632 633 When the PCD service sets a value, it will check to ensure that the 634 size of the value being set is compatible with the Token's existing definition. 635 If it is not, an error will be returned. 636 637 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 638 @param[in] TokenNumber The PCD token number. 639 @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. 640 On input, if the SizeOfValue is greater than the maximum size supported 641 for this TokenNumber then the output value of SizeOfValue will reflect 642 the maximum size supported for this TokenNumber. 643 @param[in] Buffer The buffer to set for the PCD token. 644 645 @retval EFI_SUCCESS The procedure returned successfully. 646 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 647 being set was incompatible with a call to this function. 648 Use GetSize() to retrieve the size of the target data. 649 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 650 651 **/ 652 typedef 653 EFI_STATUS 654 (EFIAPI *PCD_PROTOCOL_SET_EX_POINTER)( 655 IN CONST EFI_GUID *Guid, 656 IN UINTN TokenNumber, 657 IN OUT UINTN *SizeOfBuffer, 658 IN VOID *Buffer 659 ); 660 661 662 663 /** 664 Sets a Boolean value for a given PCD token. 665 666 When the PCD service sets a value, it will check to ensure that the 667 size of the value being set is compatible with the Token's existing definition. 668 If it is not, an error will be returned. 669 670 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 671 @param[in] TokenNumber The PCD token number. 672 @param[in] Value The value to set for the PCD token. 673 674 @retval EFI_SUCCESS The procedure returned successfully. 675 @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 676 being set was incompatible with a call to this function. 677 Use GetSize() to retrieve the size of the target data. 678 @retval EFI_NOT_FOUND The PCD service could not find the requested token number. 679 680 **/ 681 typedef 682 EFI_STATUS 683 (EFIAPI *PCD_PROTOCOL_SET_EX_BOOLEAN)( 684 IN CONST EFI_GUID *Guid, 685 IN UINTN TokenNumber, 686 IN BOOLEAN Value 687 ); 688 689 690 691 /** 692 Callback on SET function prototype definition. 693 694 This notification function serves two purposes. 695 Firstly, it notifies the module which did the registration that the value 696 of this PCD token has been set. Secondly, it provides a mechanism for the 697 module that did the registration to intercept the set operation and override 698 the value that has been set, if necessary. After the invocation of the callback function, 699 TokenData will be used by PCD service DXE driver to modify the internal data in 700 PCD database. 701 702 @param[in] CallBackGuid The PCD token GUID being set. 703 @param[in] CallBackToken The PCD token number being set. 704 @param[in, out] TokenData A pointer to the token data being set. 705 @param[in] TokenDataSize The size, in bytes, of the data being set. 706 707 @retval VOID 708 709 **/ 710 typedef 711 VOID 712 (EFIAPI *PCD_PROTOCOL_CALLBACK)( 713 IN CONST EFI_GUID *CallBackGuid, OPTIONAL 714 IN UINTN CallBackToken, 715 IN OUT VOID *TokenData, 716 IN UINTN TokenDataSize 717 ); 718 719 720 721 /** 722 Specifies a function to be called anytime the value of a designated token is changed. 723 724 @param[in] TokenNumber The PCD token number. 725 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 726 @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. 727 728 @retval EFI_SUCCESS The PCD service has successfully established a call event 729 for the CallBackToken requested. 730 @retval EFI_NOT_FOUND The PCD service could not find the referenced token number. 731 732 **/ 733 typedef 734 EFI_STATUS 735 (EFIAPI *PCD_PROTOCOL_CALLBACK_ONSET)( 736 IN CONST EFI_GUID *Guid, OPTIONAL 737 IN UINTN TokenNumber, 738 IN PCD_PROTOCOL_CALLBACK CallBackFunction 739 ); 740 741 742 743 /** 744 Cancels a previously set callback function for a particular PCD token number. 745 746 @param[in] TokenNumber The PCD token number. 747 @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value. 748 @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. 749 750 @retval EFI_SUCCESS The PCD service has successfully established a call event 751 for the CallBackToken requested. 752 @retval EFI_NOT_FOUND The PCD service could not find the referenced token number. 753 754 **/ 755 typedef 756 EFI_STATUS 757 (EFIAPI *PCD_PROTOCOL_CANCEL_CALLBACK)( 758 IN CONST EFI_GUID *Guid, OPTIONAL 759 IN UINTN TokenNumber, 760 IN PCD_PROTOCOL_CALLBACK CallBackFunction 761 ); 762 763 764 765 /** 766 Retrieves the next valid token number in a given namespace. 767 768 This is useful since the PCD infrastructure contains a sparse list of token numbers, 769 and one cannot a priori know what token numbers are valid in the database. 770 771 If TokenNumber is 0 and Guid is not NULL, then the first token from the token space specified by Guid is returned. 772 If TokenNumber is not 0 and Guid is not NULL, then the next token in the token space specified by Guid is returned. 773 If TokenNumber is 0 and Guid is NULL, then the first token in the default token space is returned. 774 If TokenNumber is not 0 and Guid is NULL, then the next token in the default token space is returned. 775 The token numbers in the default token space may not be related to token numbers in token spaces that are named by Guid. 776 If the next token number can be retrieved, then it is returned in TokenNumber, and EFI_SUCCESS is returned. 777 If TokenNumber represents the last token number in the token space specified by Guid, then EFI_NOT_FOUND is returned. 778 If TokenNumber is not present in the token space specified by Guid, then EFI_NOT_FOUND is returned. 779 780 781 @param[in] Guid The 128-bit unique value that designates the namespace from which to retrieve the next token. 782 This is an optional parameter that may be NULL. If this parameter is NULL, then a request is 783 being made to retrieve tokens from the default token space. 784 @param[in,out] TokenNumber 785 A pointer to the PCD token number to use to find the subsequent token number. 786 787 @retval EFI_SUCCESS The PCD service has retrieved the next valid token number. 788 @retval EFI_NOT_FOUND The PCD service could not find data from the requested token number. 789 790 **/ 791 typedef 792 EFI_STATUS 793 (EFIAPI *PCD_PROTOCOL_GET_NEXT_TOKEN)( 794 IN CONST EFI_GUID *Guid, OPTIONAL 795 IN OUT UINTN *TokenNumber 796 ); 797 798 799 800 /** 801 Retrieves the next valid PCD token namespace for a given namespace. 802 803 Gets the next valid token namespace for a given namespace. This is useful to traverse the valid 804 token namespaces on a platform. 805 806 @param[in, out] Guid An indirect pointer to EFI_GUID. On input it designates a known token namespace 807 from which the search will start. On output, it designates the next valid token 808 namespace on the platform. If *Guid is NULL, then the GUID of the first token 809 space of the current platform is returned. If the search cannot locate the next valid 810 token namespace, an error is returned and the value of *Guid is undefined. 811 812 @retval EFI_SUCCESS The PCD service retrieved the value requested. 813 @retval EFI_NOT_FOUND The PCD service could not find the next valid token namespace. 814 815 **/ 816 typedef 817 EFI_STATUS 818 (EFIAPI *PCD_PROTOCOL_GET_NEXT_TOKENSPACE)( 819 IN OUT CONST EFI_GUID **Guid 820 ); 821 822 /// 823 /// This service abstracts the ability to set/get Platform Configuration Database (PCD). 824 /// 825 typedef struct { 826 PCD_PROTOCOL_SET_SKU SetSku; 827 828 PCD_PROTOCOL_GET8 Get8; 829 PCD_PROTOCOL_GET16 Get16; 830 PCD_PROTOCOL_GET32 Get32; 831 PCD_PROTOCOL_GET64 Get64; 832 PCD_PROTOCOL_GET_POINTER GetPtr; 833 PCD_PROTOCOL_GET_BOOLEAN GetBool; 834 PCD_PROTOCOL_GET_SIZE GetSize; 835 836 PCD_PROTOCOL_GET_EX_8 Get8Ex; 837 PCD_PROTOCOL_GET_EX_16 Get16Ex; 838 PCD_PROTOCOL_GET_EX_32 Get32Ex; 839 PCD_PROTOCOL_GET_EX_64 Get64Ex; 840 PCD_PROTOCOL_GET_EX_POINTER GetPtrEx; 841 PCD_PROTOCOL_GET_EX_BOOLEAN GetBoolEx; 842 PCD_PROTOCOL_GET_EX_SIZE GetSizeEx; 843 844 PCD_PROTOCOL_SET8 Set8; 845 PCD_PROTOCOL_SET16 Set16; 846 PCD_PROTOCOL_SET32 Set32; 847 PCD_PROTOCOL_SET64 Set64; 848 PCD_PROTOCOL_SET_POINTER SetPtr; 849 PCD_PROTOCOL_SET_BOOLEAN SetBool; 850 851 PCD_PROTOCOL_SET_EX_8 Set8Ex; 852 PCD_PROTOCOL_SET_EX_16 Set16Ex; 853 PCD_PROTOCOL_SET_EX_32 Set32Ex; 854 PCD_PROTOCOL_SET_EX_64 Set64Ex; 855 PCD_PROTOCOL_SET_EX_POINTER SetPtrEx; 856 PCD_PROTOCOL_SET_EX_BOOLEAN SetBoolEx; 857 858 PCD_PROTOCOL_CALLBACK_ONSET CallbackOnSet; 859 PCD_PROTOCOL_CANCEL_CALLBACK CancelCallback; 860 PCD_PROTOCOL_GET_NEXT_TOKEN GetNextToken; 861 PCD_PROTOCOL_GET_NEXT_TOKENSPACE GetNextTokenSpace; 862 } PCD_PROTOCOL; 863 864 #endif 865