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878ddf1f 1/** @file\r
2 A emptry template implementation of PCD Library.\r
3\r
4 Copyright (c) 2006, Intel Corporation\r
5 All rights reserved. This program and the accompanying materials\r
6 are licensed and made available under the terms and conditions of the BSD License\r
7 which accompanies this distribution. The full text of the license may be found at\r
8 http://opensource.org/licenses/bsd-license.php\r
9\r
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13 Module Name: PcdLib.c\r
14\r
15**/\r
16\r
17\r
18\r
19/**\r
20 Sets the current SKU in the PCD database to the value specified by SkuId. SkuId is returned.\r
21\r
22 @param[in] SkuId The SKU value that will be used when the PCD service will retrieve and \r
23 set values associated with a PCD token.\r
24\r
b16ef805 25 @retval SKU_ID Return the SKU ID that just be set.\r
878ddf1f 26\r
27**/\r
8a43e8dd 28UINTN \r
878ddf1f 29EFIAPI\r
30LibPcdSetSku (\r
8a43e8dd 31 IN UINTN SkuId\r
878ddf1f 32 )\r
33{\r
bb5545b6 34 ASSERT (SkuId < 0x100);\r
35\r
878ddf1f 36 return SkuId;\r
37}\r
38\r
39\r
40\r
41/**\r
42 Returns the 8-bit value for the token specified by TokenNumber. \r
43\r
44 @param[in] The PCD token number to retrieve a current value for.\r
45\r
46 @retval UINT8 Returns the 8-bit value for the token specified by TokenNumber. \r
47\r
48**/\r
49UINT8\r
50EFIAPI\r
51LibPcdGet8 (\r
8a43e8dd 52 IN UINTN TokenNumber\r
878ddf1f 53 )\r
54{\r
55 return 0;\r
56}\r
57\r
58\r
59\r
60/**\r
61 Returns the 16-bit value for the token specified by TokenNumber. \r
62\r
63 @param[in] The PCD token number to retrieve a current value for.\r
64\r
65 @retval UINT16 Returns the 16-bit value for the token specified by TokenNumber. \r
66\r
67**/\r
68UINT16\r
69EFIAPI\r
70LibPcdGet16 (\r
8a43e8dd 71 IN UINTN TokenNumber\r
878ddf1f 72 )\r
73{\r
74 return 0;\r
75}\r
76\r
77\r
78\r
79/**\r
80 Returns the 32-bit value for the token specified by TokenNumber. \r
81\r
82 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
83\r
84 @retval UINT32 Returns the 32-bit value for the token specified by TokenNumber.\r
85\r
86**/\r
87UINT32\r
88EFIAPI\r
89LibPcdGet32 (\r
8a43e8dd 90 IN UINTN TokenNumber\r
878ddf1f 91 )\r
92{\r
93 return 0;\r
94}\r
95\r
96\r
97\r
98/**\r
99 Returns the 64-bit value for the token specified by TokenNumber.\r
100\r
101 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
102\r
103 @retval UINT64 Returns the 64-bit value for the token specified by TokenNumber.\r
104\r
105**/\r
106UINT64\r
107EFIAPI\r
108LibPcdGet64 (\r
8a43e8dd 109 IN UINTN TokenNumber\r
878ddf1f 110 )\r
111{\r
112 return 0;\r
113}\r
114\r
115\r
116\r
117/**\r
118 Returns the pointer to the buffer of the token specified by TokenNumber.\r
119\r
120 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
121\r
122 @retval VOID* Returns the pointer to the token specified by TokenNumber.\r
123\r
124**/\r
125VOID *\r
126EFIAPI\r
127LibPcdGetPtr (\r
8a43e8dd 128 IN UINTN TokenNumber\r
878ddf1f 129 )\r
130{\r
131 return 0;\r
132}\r
133\r
134\r
135\r
136/**\r
137 Returns the Boolean value of the token specified by TokenNumber. \r
138\r
139 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
140\r
141 @retval BOOLEAN Returns the Boolean value of the token specified by TokenNumber. \r
142\r
143**/\r
144BOOLEAN \r
145EFIAPI\r
146LibPcdGetBool (\r
8a43e8dd 147 IN UINTN TokenNumber\r
878ddf1f 148 )\r
149{\r
150 return 0;\r
151}\r
152\r
153\r
154\r
155/**\r
156 Returns the size of the token specified by TokenNumber. \r
157\r
158 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
159\r
160 @retval UINTN Returns the size of the token specified by TokenNumber. \r
161\r
162**/\r
163UINTN\r
164EFIAPI\r
165LibPcdGetSize (\r
8a43e8dd 166 IN UINTN TokenNumber\r
878ddf1f 167 )\r
168{\r
169 return 0;\r
170}\r
171\r
172\r
173\r
174/**\r
175 Returns the 8-bit value for the token specified by TokenNumber and Guid.\r
176 If Guid is NULL, then ASSERT(). \r
177\r
178 @param[in] Guid Pointer to a 128-bit unique value that designates \r
179 which namespace to retrieve a value from.\r
180 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
181\r
182 @retval UINT8 Return the UINT8.\r
183\r
184**/\r
185UINT8\r
186EFIAPI\r
187LibPcdGetEx8 (\r
188 IN CONST GUID *Guid,\r
8a43e8dd 189 IN UINTN TokenNumber\r
878ddf1f 190 )\r
191{\r
192 ASSERT (Guid != NULL);\r
193\r
194 return 0;\r
195}\r
196\r
197\r
198\r
199/**\r
200 Returns the 16-bit value for the token specified by TokenNumber and Guid.\r
201 If Guid is NULL, then ASSERT(). \r
202\r
203 @param[in] Guid Pointer to a 128-bit unique value that designates \r
204 which namespace to retrieve a value from.\r
205 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
206\r
207 @retval UINT16 Return the UINT16.\r
208\r
209**/\r
210UINT16\r
211EFIAPI\r
212LibPcdGetEx16 (\r
213 IN CONST GUID *Guid,\r
8a43e8dd 214 IN UINTN TokenNumber\r
878ddf1f 215 )\r
216{\r
217 ASSERT (Guid != NULL);\r
218\r
219 return 0;\r
220}\r
221\r
222\r
223\r
224/**\r
225 Returns the 32-bit value for the token specified by TokenNumber and Guid.\r
226 If Guid is NULL, then ASSERT(). \r
227\r
228 @param[in] Guid Pointer to a 128-bit unique value that designates \r
229 which namespace to retrieve a value from.\r
230 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
231\r
232 @retval UINT32 Return the UINT32.\r
233\r
234**/\r
235UINT32\r
236EFIAPI\r
237LibPcdGetEx32 (\r
238 IN CONST GUID *Guid,\r
8a43e8dd 239 IN UINTN TokenNumber\r
878ddf1f 240 )\r
241{\r
242 ASSERT (Guid != NULL);\r
243\r
244 return 0;\r
245}\r
246\r
247\r
248\r
249/**\r
250 Returns the 64-bit value for the token specified by TokenNumber and Guid.\r
251 If Guid is NULL, then ASSERT(). \r
252\r
253 @param[in] Guid Pointer to a 128-bit unique value that designates \r
254 which namespace to retrieve a value from.\r
255 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
256\r
257 @retval UINT64 Return the UINT64.\r
258\r
259**/\r
260UINT64\r
261EFIAPI\r
262LibPcdGetEx64 (\r
263 IN CONST GUID *Guid,\r
8a43e8dd 264 IN UINTN TokenNumber\r
878ddf1f 265 )\r
266{\r
267 ASSERT (Guid != NULL);\r
268\r
269 return 0;\r
270}\r
271\r
272\r
273\r
274/**\r
275 Returns the pointer to the buffer of the token specified by TokenNumber and Guid.\r
276 If Guid is NULL, then ASSERT(). \r
277\r
278 @param[in] Guid Pointer to a 128-bit unique value that designates \r
279 which namespace to retrieve a value from.\r
280 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
281\r
282 @retval VOID* Return the VOID* pointer.\r
283\r
284**/\r
285VOID *\r
286EFIAPI\r
287LibPcdGetExPtr (\r
288 IN CONST GUID *Guid,\r
8a43e8dd 289 IN UINTN TokenNumber\r
878ddf1f 290 )\r
291{\r
292 ASSERT (Guid != NULL);\r
293\r
294 return 0;\r
295}\r
296\r
297\r
298\r
299/**\r
300 Returns the Boolean value of the token specified by TokenNumber and Guid. \r
301 If Guid is NULL, then ASSERT(). \r
302\r
303 @param[in] Guid Pointer to a 128-bit unique value that designates \r
304 which namespace to retrieve a value from.\r
305 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
306\r
307 @retval BOOLEAN Return the BOOLEAN.\r
308\r
309**/\r
310BOOLEAN\r
311EFIAPI\r
312LibPcdGetExBool (\r
313 IN CONST GUID *Guid,\r
8a43e8dd 314 IN UINTN TokenNumber\r
878ddf1f 315 )\r
316{\r
317 ASSERT (Guid != NULL);\r
318\r
319 return 0;\r
320}\r
321\r
322\r
323\r
324/**\r
325 Returns the size of the token specified by TokenNumber and Guid. \r
326 If Guid is NULL, then ASSERT(). \r
327\r
328 @param[in] Guid Pointer to a 128-bit unique value that designates \r
329 which namespace to retrieve a value from.\r
330 @param[in] TokenNumber The PCD token number to retrieve a current value for.\r
331\r
332 @retval UINTN Return the size.\r
333\r
334**/\r
335UINTN\r
336EFIAPI\r
337LibPcdGetExSize (\r
338 IN CONST GUID *Guid,\r
8a43e8dd 339 IN UINTN TokenNumber\r
878ddf1f 340 )\r
341{\r
342 ASSERT (Guid != NULL);\r
343\r
344 return 0;\r
345}\r
346\r
347\r
348\r
349/**\r
350 Sets the 8-bit value for the token specified by TokenNumber \r
351 to the value specified by Value. Value is returned.\r
352 \r
353 @param[in] TokenNumber The PCD token number to set a current value for.\r
354 @param[in] Value The 8-bit value to set.\r
355\r
356 @retval UINT8 Return the value been set.\r
357\r
358**/\r
359UINT8\r
360EFIAPI\r
361LibPcdSet8 (\r
8a43e8dd 362 IN UINTN TokenNumber,\r
878ddf1f 363 IN UINT8 Value\r
364 )\r
365{\r
366 return Value;\r
367}\r
368\r
369\r
370\r
371/**\r
372 Sets the 16-bit value for the token specified by TokenNumber \r
373 to the value specified by Value. Value is returned.\r
374 \r
375 @param[in] TokenNumber The PCD token number to set a current value for.\r
376 @param[in] Value The 16-bit value to set.\r
377\r
378 @retval UINT16 Return the value been set.\r
379\r
380**/\r
381UINT16\r
382EFIAPI\r
383LibPcdSet16 (\r
8a43e8dd 384 IN UINTN TokenNumber,\r
878ddf1f 385 IN UINT16 Value\r
386 )\r
387{\r
388 return Value;\r
389}\r
390\r
391\r
392\r
393/**\r
394 Sets the 32-bit value for the token specified by TokenNumber \r
395 to the value specified by Value. Value is returned.\r
396 \r
397 @param[in] TokenNumber The PCD token number to set a current value for.\r
398 @param[in] Value The 32-bit value to set.\r
399\r
400 @retval UINT32 Return the value been set.\r
401\r
402**/\r
403UINT32\r
404EFIAPI\r
405LibPcdSet32 (\r
8a43e8dd 406 IN UINTN TokenNumber,\r
878ddf1f 407 IN UINT32 Value\r
408 )\r
409{\r
410 return Value;\r
411}\r
412\r
413\r
414\r
415/**\r
416 Sets the 64-bit value for the token specified by TokenNumber \r
417 to the value specified by Value. Value is returned.\r
418 \r
419 @param[in] TokenNumber The PCD token number to set a current value for.\r
420 @param[in] Value The 64-bit value to set.\r
421\r
422 @retval UINT64 Return the value been set.\r
423\r
424**/\r
425UINT64\r
426EFIAPI\r
427LibPcdSet64 (\r
8a43e8dd 428 IN UINTN TokenNumber,\r
878ddf1f 429 IN UINT64 Value\r
430 )\r
431{\r
432 return Value;\r
433}\r
434\r
435\r
436\r
437/**\r
438 Sets a buffer for the token specified by TokenNumber to \r
4276d5da 439 the value specified by Buffer and SizeOfValue. Buffer to\r
440 be set is returned. The content of the buffer could be \r
441 overwritten if a Callback on SET is registered with this\r
442 TokenNumber.\r
443 \r
444 If SizeOfValue is greater than the maximum \r
445 size support by TokenNumber, then set SizeOfValue to the \r
446 maximum size supported by TokenNumber and return NULL to \r
447 indicate that the set operation was not actually performed. \r
448 \r
449 If SizeOfValue > 0 and Buffer is NULL, then ASSERT().\r
878ddf1f 450 \r
451 @param[in] TokenNumber The PCD token number to set a current value for.\r
4276d5da 452 @param[in,out] SizeOfBuffer The size, in bytes, of Buffer.\r
878ddf1f 453 @param[in] Value A pointer to the buffer to set.\r
454\r
455 @retval VOID* Return the pointer for the buffer been set.\r
456\r
457**/\r
458VOID *\r
459EFIAPI\r
460LibPcdSetPtr (\r
4276d5da 461 IN UINTN TokenNumber,\r
462 IN OUT UINTN *SizeOfBuffer,\r
463 IN VOID *Buffer\r
878ddf1f 464 )\r
465{\r
3534cbb7 466 if (*SizeOfBuffer > 0) {\r
467 ASSERT (Buffer != NULL);\r
468 }\r
b16ef805 469\r
470 return Buffer;\r
878ddf1f 471}\r
472\r
473\r
474\r
475/**\r
476 Sets the Boolean value for the token specified by TokenNumber \r
477 to the value specified by Value. Value is returned.\r
478 \r
479 @param[in] TokenNumber The PCD token number to set a current value for.\r
480 @param[in] Value The boolean value to set.\r
481\r
482 @retval BOOLEAN Return the value been set.\r
483\r
484**/\r
485BOOLEAN\r
486EFIAPI\r
487LibPcdSetBool (\r
8a43e8dd 488 IN UINTN TokenNumber,\r
878ddf1f 489 IN BOOLEAN Value\r
490 )\r
491{\r
492 return Value;\r
493}\r
494\r
495\r
496\r
497/**\r
498 Sets the 8-bit value for the token specified by TokenNumber and \r
499 Guid to the value specified by Value. Value is returned.\r
500 If Guid is NULL, then ASSERT().\r
501 \r
502 @param[in] Guid Pointer to a 128-bit unique value that \r
503 designates which namespace to set a value from.\r
504 @param[in] TokenNumber The PCD token number to set a current value for.\r
505 @param[in] Value The 8-bit value to set.\r
506\r
507 @retval UINT8 Return the value been set.\r
508\r
509**/\r
510UINT8\r
511EFIAPI\r
512LibPcdSetEx8 (\r
513 IN CONST GUID *Guid,\r
8a43e8dd 514 IN UINTN TokenNumber,\r
878ddf1f 515 IN UINT8 Value\r
516 )\r
517{\r
518 ASSERT (Guid != NULL);\r
519\r
520 return Value;\r
521}\r
522\r
523\r
524\r
525/**\r
526 Sets the 16-bit value for the token specified by TokenNumber and \r
527 Guid to the value specified by Value. Value is returned.\r
528 If Guid is NULL, then ASSERT().\r
529 \r
530 @param[in] Guid Pointer to a 128-bit unique value that \r
531 designates which namespace to set a value from.\r
532 @param[in] TokenNumber The PCD token number to set a current value for.\r
533 @param[in] Value The 16-bit value to set.\r
534\r
535 @retval UINT8 Return the value been set.\r
536\r
537**/\r
538UINT16\r
539EFIAPI\r
540LibPcdSetEx16 (\r
541 IN CONST GUID *Guid,\r
8a43e8dd 542 IN UINTN TokenNumber,\r
878ddf1f 543 IN UINT16 Value\r
544 )\r
545{\r
546 ASSERT (Guid != NULL);\r
547\r
548 return Value;\r
549}\r
550\r
551\r
552\r
553/**\r
554 Sets the 32-bit value for the token specified by TokenNumber and \r
555 Guid to the value specified by Value. Value is returned.\r
556 If Guid is NULL, then ASSERT().\r
557 \r
558 @param[in] Guid Pointer to a 128-bit unique value that \r
559 designates which namespace to set a value from.\r
560 @param[in] TokenNumber The PCD token number to set a current value for.\r
561 @param[in] Value The 32-bit value to set.\r
562\r
563 @retval UINT32 Return the value been set.\r
564\r
565**/\r
566UINT32\r
567EFIAPI\r
568LibPcdSetEx32 (\r
569 IN CONST GUID *Guid,\r
8a43e8dd 570 IN UINTN TokenNumber,\r
878ddf1f 571 IN UINT32 Value\r
572 )\r
573{\r
574 ASSERT (Guid != NULL);\r
575\r
576 return Value;\r
577}\r
578\r
579\r
580\r
581/**\r
582 Sets the 64-bit value for the token specified by TokenNumber and \r
583 Guid to the value specified by Value. Value is returned.\r
584 If Guid is NULL, then ASSERT().\r
585 \r
586 @param[in] Guid Pointer to a 128-bit unique value that \r
587 designates which namespace to set a value from.\r
588 @param[in] TokenNumber The PCD token number to set a current value for.\r
589 @param[in] Value The 64-bit value to set.\r
590\r
591 @retval UINT64 Return the value been set.\r
592\r
593**/\r
594UINT64\r
595EFIAPI\r
596LibPcdSetEx64 (\r
597 IN CONST GUID *Guid,\r
8a43e8dd 598 IN UINTN TokenNumber,\r
878ddf1f 599 IN UINT64 Value\r
600 )\r
601{\r
602 ASSERT (Guid != NULL);\r
603\r
604 return Value;\r
605}\r
606\r
607\r
608\r
609/**\r
4276d5da 610 Sets a buffer for the token specified by TokenNumber to the value specified by \r
611 Buffer and SizeOfValue. Buffer is returned. If SizeOfValue is greater than \r
612 the maximum size support by TokenNumber, then set SizeOfValue to the maximum size \r
613 supported by TokenNumber and return NULL to indicate that the set operation \r
614 was not actually performed. \r
615 \r
616 If SizeOfValue > 0 and Buffer is NULL, then ASSERT().\r
878ddf1f 617 \r
618 @param[in] Guid Pointer to a 128-bit unique value that \r
619 designates which namespace to set a value from.\r
620 @param[in] TokenNumber The PCD token number to set a current value for.\r
4276d5da 621 @param[in, out] SizeOfBuffer The size, in bytes, of Buffer.\r
622 @param[in] Buffer A pointer to the buffer to set.\r
878ddf1f 623\r
4276d5da 624 @retval VOID * Return the pinter to the buffer been set.\r
878ddf1f 625\r
626**/\r
627VOID *\r
628EFIAPI\r
629LibPcdSetExPtr (\r
4276d5da 630 IN CONST GUID *Guid,\r
631 IN UINTN TokenNumber,\r
632 IN OUT UINTN *SizeOfBuffer,\r
633 IN VOID *Buffer\r
878ddf1f 634 )\r
635{\r
878ddf1f 636 ASSERT (Guid != NULL);\r
3534cbb7 637\r
bb5545b6 638 ASSERT (SizeOfBuffer != NULL);\r
639 \r
3534cbb7 640 if (*SizeOfBuffer > 0) {\r
641 ASSERT (Buffer != NULL);\r
642 }\r
878ddf1f 643\r
b16ef805 644 return Buffer;\r
878ddf1f 645}\r
646\r
647\r
648\r
649/**\r
650 Sets the Boolean value for the token specified by TokenNumber and \r
651 Guid to the value specified by Value. Value is returned.\r
652 If Guid is NULL, then ASSERT().\r
653 \r
654 @param[in] Guid Pointer to a 128-bit unique value that \r
655 designates which namespace to set a value from.\r
656 @param[in] TokenNumber The PCD token number to set a current value for.\r
657 @param[in] Value The Boolean value to set.\r
658\r
659 @retval Boolean Return the value been set.\r
660\r
661**/\r
662BOOLEAN\r
663EFIAPI\r
664LibPcdSetExBool (\r
665 IN CONST GUID *Guid,\r
8a43e8dd 666 IN UINTN TokenNumber,\r
878ddf1f 667 IN BOOLEAN Value\r
668 )\r
669{\r
670 ASSERT (Guid != NULL);\r
671\r
672 return Value;\r
673}\r
674\r
675\r
676\r
677/**\r
678 When the token specified by TokenNumber and Guid is set, \r
679 then notification function specified by NotificationFunction is called. \r
680 If Guid is NULL, then the default token space is used. \r
681 If NotificationFunction is NULL, then ASSERT().\r
682\r
683 @param[in] Guid Pointer to a 128-bit unique value that designates which \r
684 namespace to set a value from. If NULL, then the default \r
685 token space is used.\r
686 @param[in] TokenNumber The PCD token number to monitor.\r
687 @param[in] NotificationFunction The function to call when the token \r
688 specified by Guid and TokenNumber is set.\r
689\r
690 @retval VOID\r
691\r
692**/\r
693VOID\r
694EFIAPI\r
695LibPcdCallbackOnSet (\r
696 IN CONST GUID *Guid, OPTIONAL\r
8a43e8dd 697 IN UINTN TokenNumber,\r
878ddf1f 698 IN PCD_CALLBACK NotificationFunction\r
699 )\r
700{\r
701 ASSERT (NotificationFunction != NULL);\r
702}\r
703\r
704\r
705\r
706/**\r
707 Disable a notification function that was established with LibPcdCallbackonSet().\r
708 If NotificationFunction is NULL, then ASSERT().\r
709\r
710 @param[in] Guid Specify the GUID token space.\r
711 @param[in] TokenNumber Specify the token number.\r
712 @param[in] NotificationFunction The callback function to be unregistered.\r
713\r
714 @retval VOID\r
715\r
716**/\r
717VOID\r
718EFIAPI\r
719LibPcdCancelCallback (\r
720 IN CONST GUID *Guid, OPTIONAL\r
8a43e8dd 721 IN UINTN TokenNumber,\r
878ddf1f 722 IN PCD_CALLBACK NotificationFunction\r
723 )\r
724{\r
725 ASSERT (NotificationFunction != NULL);\r
726}\r
727\r
728\r
729\r
730/**\r
731 Retrieves the next PCD token number from the token space specified by Guid. \r
732 If Guid is NULL, then the default token space is used. If TokenNumber is 0, \r
733 then the first token number is returned. Otherwise, the token number that \r
734 follows TokenNumber in the token space is returned. If TokenNumber is the last \r
735 token number in the token space, then 0 is returned. If TokenNumber is not 0 and \r
736 is not in the token space specified by Guid, then ASSERT().\r
737\r
738 @param[in] Pointer to a 128-bit unique value that designates which namespace \r
739 to set a value from. If NULL, then the default token space is used.\r
740 @param[in] The previous PCD token number. If 0, then retrieves the first PCD \r
741 token number.\r
742\r
8a43e8dd 743 @retval UINTN The next valid token number.\r
878ddf1f 744\r
745**/\r
8a43e8dd 746UINTN \r
878ddf1f 747EFIAPI\r
748LibPcdGetNextToken (\r
3496595d 749 IN CONST GUID *Guid, OPTIONAL\r
8a43e8dd 750 IN UINTN TokenNumber\r
878ddf1f 751 )\r
752{\r
753 return 0;\r
754}\r
4276d5da 755\r
756\r
757\r
758/**\r
759 Retrieves the next PCD token space from a token space specified by Guid.\r
760 Guid of NULL is reserved to mark the default local token namespace on the current\r
761 platform. If Guid is NULL, then the GUID of the first non-local token space of the \r
762 current platform is returned. If Guid is the last non-local token space, \r
763 then NULL is returned. \r
764\r
765 If Guid is not NULL and is not a valid token space in the current platform, then ASSERT().\r
766\r
767\r
768 \r
769 @param[in] Pointer to a 128-bit unique value that designates from which namespace \r
770 to start the search.\r
771\r
772 @retval CONST GUID * The next valid token namespace.\r
773\r
774**/\r
bb5545b6 775GUID * \r
4276d5da 776EFIAPI\r
777LibPcdGetNextTokenSpace (\r
778 IN CONST GUID *Guid\r
779 )\r
780{\r
781 return NULL;\r
782}\r
1eb73ab5 783\r
784\r
785\r
786/**\r
787 Sets the PCD entry specified by PatchVariable to the value specified by Buffer \r
788 and SizeOfValue. Buffer is returned. If SizeOfValue is greater than \r
789 MaximumDatumSize, then set SizeOfValue to MaximumDatumSize and return \r
790 NULL to indicate that the set operation was not actually performed. \r
791 If SizeOfValue is set to MAX_ADDRESS, then SizeOfValue must be set to \r
792 MaximumDatumSize and NULL must be returned.\r
793 \r
794 If PatchVariable is NULL, then ASSERT().\r
795 If SizeOfValue is NULL, then ASSERT().\r
796 If SizeOfValue > 0 and Buffer is NULL, then ASSERT().\r
797\r
798 @param[in] PatchVariable A pointer to the global variable in a module that is \r
799 the target of the set operation.\r
800 @param[in] MaximumDatumSize The maximum size allowed for the PCD entry specified by PatchVariable.\r
801 @param[in, out] SizeOfBuffer A pointer to the size, in bytes, of Buffer.\r
802 @param[in] Buffer A pointer to the buffer to used to set the target variable.\r
803\r
804**/\r
805VOID *\r
806EFIAPI\r
807LibPatchPcdSetPtr (\r
808 IN VOID *PatchVariable,\r
809 IN UINTN MaximumDatumSize,\r
810 IN OUT UINTN *SizeOfBuffer,\r
811 IN CONST VOID *Buffer\r
812 )\r
813{\r
814 ASSERT (PatchVariable != NULL);\r
815 ASSERT (SizeOfBuffer != NULL);\r
816 \r
817 if (*SizeOfBuffer > 0) {\r
818 ASSERT (Buffer != NULL);\r
819 }\r
820\r
821 if ((*SizeOfBuffer > MaximumDatumSize) ||\r
822 (*SizeOfBuffer == MAX_ADDRESS)) {\r
823 *SizeOfBuffer = MaximumDatumSize;\r
824 return NULL;\r
825 }\r
826 \r
827 CopyMem (PatchVariable, Buffer, *SizeOfBuffer);\r
828 \r
829 return (VOID *) Buffer;\r
830}\r
831\r