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[mirror_edk2.git] / MdeModulePkg / Universal / PCD / Dxe / Service.c
1 /** @file
2 Help functions used by PCD DXE driver.
3
4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15 #include "Service.h"
16
17 PCD_DATABASE *mPcdDatabase;
18
19 LIST_ENTRY *mCallbackFnTable;
20
21 /**
22 Get the PCD entry pointer in PCD database.
23
24 This routine will visit PCD database to find the PCD entry according to given
25 token number. The given token number is autogened by build tools and it will be
26 translated to local token number. Local token number contains PCD's type and
27 offset of PCD entry in PCD database.
28
29 @param TokenNumber Token's number, it is autogened by build tools
30 @param GetSize The size of token's value
31
32 @return PCD entry pointer in PCD database
33
34 **/
35 VOID *
36 GetWorker (
37 IN UINTN TokenNumber,
38 IN UINTN GetSize
39 )
40 {
41 UINT32 *LocalTokenNumberTable;
42 EFI_GUID *GuidTable;
43 UINT8 *StringTable;
44 EFI_GUID *Guid;
45 UINT16 *Name;
46 VARIABLE_HEAD *VariableHead;
47 UINT8 *VaraiableDefaultBuffer;
48 UINT8 *Data;
49 VPD_HEAD *VpdHead;
50 UINT8 *PcdDb;
51 VOID *RetPtr;
52 UINTN MaxSize;
53 UINTN TmpTokenNumber;
54 UINTN DataSize;
55 EFI_STATUS Status;
56 UINT32 LocalTokenNumber;
57 UINT32 Offset;
58 UINT16 StringTableIdx;
59 BOOLEAN IsPeiDb;
60
61 //
62 // Aquire lock to prevent reentrance from TPL_CALLBACK level
63 //
64 EfiAcquireLock (&mPcdDatabaseLock);
65
66 RetPtr = NULL;
67 //
68 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
69 // We have to decrement TokenNumber by 1 to make it usable
70 // as the array index.
71 //
72 TokenNumber--;
73
74 TmpTokenNumber = TokenNumber;
75
76 //
77 // PCD_TOTAL_TOKEN_NUMBER is a auto-generated constant.
78 // It could be zero. EBC compiler is very choosy. It may
79 // report warning. So we add 1 in each size of the
80 // comparison.
81 //
82 ASSERT (TokenNumber + 1 < PCD_TOTAL_TOKEN_NUMBER + 1);
83
84 ASSERT ((GetSize == DxePcdGetSize (TokenNumber + 1)) || (GetSize == 0));
85
86 // EBC compiler is very choosy. It may report warning about comparison
87 // between UINTN and 0 . So we add 1 in each size of the
88 // comparison.
89 IsPeiDb = (BOOLEAN) ((TokenNumber + 1 < PEI_LOCAL_TOKEN_NUMBER + 1) ? TRUE : FALSE);
90
91 LocalTokenNumberTable = IsPeiDb ? mPcdDatabase->PeiDb.Init.LocalTokenNumberTable :
92 mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
93
94 TokenNumber = IsPeiDb ? TokenNumber :
95 TokenNumber - PEI_LOCAL_TOKEN_NUMBER;
96
97 LocalTokenNumber = LocalTokenNumberTable[TokenNumber];
98
99 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == PCD_TYPE_SKU_ENABLED) {
100 if (GetSize == 0) {
101 GetPtrTypeSize (TmpTokenNumber, &MaxSize);
102 } else {
103 MaxSize = GetSize;
104 }
105 LocalTokenNumber = GetSkuEnabledTokenNumber (LocalTokenNumber & ~PCD_TYPE_SKU_ENABLED, MaxSize, IsPeiDb);
106 }
107
108 PcdDb = IsPeiDb ? ((UINT8 *) &mPcdDatabase->PeiDb) : ((UINT8 *) &mPcdDatabase->DxeDb);
109
110 if (IsPeiDb) {
111 StringTable = (UINT8 *) (&mPcdDatabase->PeiDb.Init.StringTable[0]);
112 } else {
113 StringTable = (UINT8 *) (&mPcdDatabase->DxeDb.Init.StringTable[0]);
114 }
115
116
117 Offset = LocalTokenNumber & PCD_DATABASE_OFFSET_MASK;
118
119 switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {
120 case PCD_TYPE_VPD:
121 VpdHead = (VPD_HEAD *) ((UINT8 *) PcdDb + Offset);
122 RetPtr = (VOID *) (UINTN) (PcdGet32 (PcdVpdBaseAddress) + VpdHead->Offset);
123 break;
124
125 case PCD_TYPE_HII|PCD_TYPE_STRING:
126 case PCD_TYPE_HII:
127 if (IsPeiDb) {
128 GuidTable = (EFI_GUID *) (&mPcdDatabase->PeiDb.Init.GuidTable[0]);
129 } else {
130 GuidTable = (EFI_GUID *) (&mPcdDatabase->DxeDb.Init.GuidTable[0]);
131 }
132
133 VariableHead = (VARIABLE_HEAD *) (PcdDb + Offset);
134 Guid = GuidTable + VariableHead->GuidTableIndex;
135 Name = (UINT16*)(StringTable + VariableHead->StringIndex);
136
137 if ((LocalTokenNumber & PCD_TYPE_ALL_SET) == (PCD_TYPE_HII|PCD_TYPE_STRING)) {
138 //
139 // If a HII type PCD's datum type is VOID*, the DefaultValueOffset is the index of
140 // string array in string table.
141 //
142 StringTableIdx = *(UINT16*)((UINT8 *) PcdDb + VariableHead->DefaultValueOffset);
143 VaraiableDefaultBuffer = (VOID *) (StringTable + StringTableIdx);
144 Status = GetHiiVariable (Guid, Name, &Data, &DataSize);
145 if (Status == EFI_SUCCESS) {
146 if (GetSize == 0) {
147 //
148 // It is a pointer type. So get the MaxSize reserved for
149 // this PCD entry.
150 //
151 GetPtrTypeSize (TmpTokenNumber, &GetSize);
152 }
153 CopyMem (VaraiableDefaultBuffer, Data + VariableHead->Offset, GetSize);
154 FreePool (Data);
155 }
156 RetPtr = (VOID *) VaraiableDefaultBuffer;
157 } else {
158 VaraiableDefaultBuffer = (UINT8 *) PcdDb + VariableHead->DefaultValueOffset;
159
160 Status = GetHiiVariable (Guid, Name, &Data, &DataSize);
161 if (Status == EFI_SUCCESS) {
162 if (GetSize == 0) {
163 //
164 // It is a pointer type. So get the MaxSize reserved for
165 // this PCD entry.
166 //
167 GetPtrTypeSize (TmpTokenNumber, &GetSize);
168 }
169 CopyMem (VaraiableDefaultBuffer, Data + VariableHead->Offset, GetSize);
170 FreePool (Data);
171 }
172 //
173 // If the operation is successful, we copy the data
174 // to the default value buffer in the PCD Database.
175 // So that we can free the Data allocated in GetHiiVariable.
176 //
177 //
178 // If the operation is not successful,
179 // Return 1) either the default value specified by Platform Integrator
180 // 2) Or the value Set by a PCD set operation.
181 //
182 RetPtr = (VOID *) VaraiableDefaultBuffer;
183 }
184 break;
185
186 case PCD_TYPE_STRING:
187 StringTableIdx = *(UINT16*)((UINT8 *) PcdDb + Offset);
188 RetPtr = (VOID *) (StringTable + StringTableIdx);
189 break;
190
191 case PCD_TYPE_DATA:
192 RetPtr = (VOID *) ((UINT8 *) PcdDb + Offset);
193 break;
194
195 default:
196 ASSERT (FALSE);
197 break;
198
199 }
200
201 EfiReleaseLock (&mPcdDatabaseLock);
202
203 return RetPtr;
204
205 }
206
207 /**
208 Register the callback function for a PCD entry.
209
210 This routine will register a callback function to a PCD entry by given token number
211 and token space guid.
212
213 @param TokenNumber PCD token's number, it is autogened by build tools.
214 @param Guid PCD token space's guid,
215 if not NULL, this PCD is dynamicEx type PCD.
216 @param CallBackFunction Callback function pointer
217
218 @return EFI_SUCCESS Always success for registering callback function.
219
220 **/
221 EFI_STATUS
222 DxeRegisterCallBackWorker (
223 IN UINTN TokenNumber,
224 IN CONST EFI_GUID *Guid, OPTIONAL
225 IN PCD_PROTOCOL_CALLBACK CallBackFunction
226 )
227 {
228 CALLBACK_FN_ENTRY *FnTableEntry;
229 LIST_ENTRY *ListHead;
230 LIST_ENTRY *ListNode;
231
232 if (Guid != NULL) {
233 TokenNumber = GetExPcdTokenNumber (Guid, (UINT32) TokenNumber);
234 }
235
236 //
237 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
238 // We have to decrement TokenNumber by 1 to make it usable
239 // as the array index of mCallbackFnTable[].
240 //
241 ListHead = &mCallbackFnTable[TokenNumber - 1];
242 ListNode = GetFirstNode (ListHead);
243
244 while (ListNode != ListHead) {
245 FnTableEntry = CR_FNENTRY_FROM_LISTNODE(ListNode, CALLBACK_FN_ENTRY, Node);
246
247 if (FnTableEntry->CallbackFn == CallBackFunction) {
248 //
249 // We only allow a Callback function to be register once
250 // for a TokenNumber. So just return EFI_SUCCESS
251 //
252 return EFI_SUCCESS;
253 }
254 ListNode = GetNextNode (ListHead, ListNode);
255 }
256
257 FnTableEntry = AllocatePool (sizeof(CALLBACK_FN_ENTRY));
258 ASSERT (FnTableEntry != NULL);
259
260 FnTableEntry->CallbackFn = CallBackFunction;
261 InsertTailList (ListHead, &FnTableEntry->Node);
262
263 return EFI_SUCCESS;
264 }
265
266 /**
267 UnRegister the callback function for a PCD entry.
268
269 This routine will unregister a callback function to a PCD entry by given token number
270 and token space guid.
271
272 @param TokenNumber PCD token's number, it is autogened by build tools.
273 @param Guid PCD token space's guid.
274 if not NULL, this PCD is dynamicEx type PCD.
275 @param CallBackFunction Callback function pointer
276
277 @retval EFI_SUCCESS Callback function is success to be unregister.
278 @retval EFI_INVALID_PARAMETER Can not find the PCD entry by given token number.
279 **/
280 EFI_STATUS
281 DxeUnRegisterCallBackWorker (
282 IN UINTN TokenNumber,
283 IN CONST EFI_GUID *Guid, OPTIONAL
284 IN PCD_PROTOCOL_CALLBACK CallBackFunction
285 )
286 {
287 CALLBACK_FN_ENTRY *FnTableEntry;
288 LIST_ENTRY *ListHead;
289 LIST_ENTRY *ListNode;
290
291 if (Guid != NULL) {
292 TokenNumber = GetExPcdTokenNumber (Guid, (UINT32) TokenNumber);
293 }
294
295 //
296 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
297 // We have to decrement TokenNumber by 1 to make it usable
298 // as the array index of mCallbackFnTable[].
299 //
300 ListHead = &mCallbackFnTable[TokenNumber - 1];
301 ListNode = GetFirstNode (ListHead);
302
303 while (ListNode != ListHead) {
304 FnTableEntry = CR_FNENTRY_FROM_LISTNODE(ListNode, CALLBACK_FN_ENTRY, Node);
305
306 if (FnTableEntry->CallbackFn == CallBackFunction) {
307 //
308 // We only allow a Callback function to be register once
309 // for a TokenNumber. So we can safely remove the Node from
310 // the Link List and return EFI_SUCCESS.
311 //
312 RemoveEntryList (ListNode);
313 FreePool (FnTableEntry);
314
315 return EFI_SUCCESS;
316 }
317 ListNode = GetNextNode (ListHead, ListNode);
318 }
319
320 return EFI_INVALID_PARAMETER;
321 }
322
323 /**
324 Get next token number in given token space.
325
326 This routine is used for dynamicEx type PCD. It will firstly scan token space
327 table to get token space according to given token space guid. Then scan given
328 token number in found token space, if found, then return next token number in
329 this token space.
330
331 @param Guid Token space guid. Next token number will be scaned in
332 this token space.
333 @param TokenNumber Token number.
334 If PCD_INVALID_TOKEN_NUMBER, return first token number in
335 token space table.
336 If not PCD_INVALID_TOKEN_NUMBER, return next token number
337 in token space table.
338 @param GuidTable Token space guid table. It will be used for scan token space
339 by given token space guid.
340 @param SizeOfGuidTable The size of guid table.
341 @param ExMapTable DynamicEx token number mapping table.
342 @param SizeOfExMapTable The size of dynamicEx token number mapping table.
343
344 @retval EFI_NOT_FOUND Can not given token space or token number.
345 @retval EFI_SUCCESS Success to get next token number.
346
347 **/
348 EFI_STATUS
349 ExGetNextTokeNumber (
350 IN CONST EFI_GUID *Guid,
351 IN OUT UINTN *TokenNumber,
352 IN EFI_GUID *GuidTable,
353 IN UINTN SizeOfGuidTable,
354 IN DYNAMICEX_MAPPING *ExMapTable,
355 IN UINTN SizeOfExMapTable
356 )
357 {
358 EFI_GUID *MatchGuid;
359 UINTN Index;
360 UINTN GuidTableIdx;
361 BOOLEAN Found;
362
363 //
364 // Scan token space guid
365 //
366 MatchGuid = ScanGuid (GuidTable, SizeOfGuidTable, Guid);
367 if (MatchGuid == NULL) {
368 return EFI_NOT_FOUND;
369 }
370
371 //
372 // Find the token space table in dynamicEx mapping table.
373 //
374 Found = FALSE;
375 GuidTableIdx = MatchGuid - GuidTable;
376 for (Index = 0; Index < SizeOfExMapTable; Index++) {
377 if (ExMapTable[Index].ExGuidIndex == GuidTableIdx) {
378 Found = TRUE;
379 break;
380 }
381 }
382
383 if (Found) {
384 //
385 // If given token number is PCD_INVALID_TOKEN_NUMBER, then return the first
386 // token number in found token space.
387 //
388 if (*TokenNumber == PCD_INVALID_TOKEN_NUMBER) {
389 *TokenNumber = ExMapTable[Index].ExTokenNumber;
390 return EFI_SUCCESS;
391 }
392
393 for ( ; Index < SizeOfExMapTable; Index++) {
394 if (ExMapTable[Index].ExTokenNumber == *TokenNumber) {
395 Index ++;
396 if (Index == SizeOfExMapTable) {
397 //
398 // Exceed the length of ExMap Table
399 //
400 *TokenNumber = PCD_INVALID_TOKEN_NUMBER;
401 return EFI_SUCCESS;
402 } else if (ExMapTable[Index].ExGuidIndex == GuidTableIdx) {
403 //
404 // Found the next match
405 //
406 *TokenNumber = ExMapTable[Index].ExTokenNumber;
407 return EFI_SUCCESS;
408 } else {
409 //
410 // Guid has been changed. It is the next Token Space Guid.
411 // We should flag no more TokenNumber.
412 //
413 *TokenNumber = PCD_INVALID_TOKEN_NUMBER;
414 return EFI_SUCCESS;
415 }
416 }
417 }
418 }
419
420 return EFI_NOT_FOUND;
421 }
422
423
424 /**
425 Initialize the PCD database in DXE phase.
426
427 PCD database in DXE phase also contains PCD database in PEI phase which is copied
428 from GUID Hob.
429
430 **/
431 VOID
432 BuildPcdDxeDataBase (
433 VOID
434 )
435 {
436 PEI_PCD_DATABASE *PeiDatabase;
437 EFI_HOB_GUID_TYPE *GuidHob;
438 UINTN Index;
439
440 mPcdDatabase = AllocateZeroPool (sizeof(PCD_DATABASE));
441 ASSERT (mPcdDatabase != NULL);
442
443 GuidHob = GetFirstGuidHob (&gPcdDataBaseHobGuid);
444 if (GuidHob != NULL) {
445
446 //
447 // We will copy over the PEI phase's PCD Database.
448 //
449 // If no PEIMs use dynamic Pcd Entry, the Pcd Service PEIM
450 // should not be included at all. So the GuidHob could
451 // be NULL. If it is NULL, we just copy over the DXE Default
452 // Value to PCD Database.
453 //
454
455 PeiDatabase = (PEI_PCD_DATABASE *) GET_GUID_HOB_DATA (GuidHob);
456 //
457 // Copy PCD Entries refereneced in PEI phase to PCD DATABASE
458 //
459 CopyMem (&mPcdDatabase->PeiDb, PeiDatabase, sizeof (PEI_PCD_DATABASE));
460 }
461
462 //
463 // Copy PCD Entries with default value to PCD DATABASE
464 //
465 CopyMem (&mPcdDatabase->DxeDb.Init, &gDXEPcdDbInit, sizeof(DXE_PCD_DATABASE_INIT));
466
467
468 //
469 // Initialized the Callback Function Table
470 //
471
472 mCallbackFnTable = AllocateZeroPool (PCD_TOTAL_TOKEN_NUMBER * sizeof (LIST_ENTRY));
473 ASSERT(mCallbackFnTable != NULL);
474
475 // EBC compiler is very choosy. It may report warning about comparison
476 // between UINTN and 0 . So we add 1 in each size of the
477 // comparison.
478 for (Index = 0; Index + 1 < PCD_TOTAL_TOKEN_NUMBER + 1; Index++) {
479 InitializeListHead (&mCallbackFnTable[Index]);
480 }
481 }
482
483 /**
484 Get Variable which contains HII type PCD entry.
485
486 @param VariableGuid Variable's guid
487 @param VariableName Variable's unicode name string
488 @param VariableData Variable's data pointer,
489 @param VariableSize Variable's size.
490
491 @return the status of gRT->GetVariable
492 **/
493 EFI_STATUS
494 GetHiiVariable (
495 IN EFI_GUID *VariableGuid,
496 IN UINT16 *VariableName,
497 OUT UINT8 **VariableData,
498 OUT UINTN *VariableSize
499 )
500 {
501 UINTN Size;
502 EFI_STATUS Status;
503 UINT8 *Buffer;
504
505 Size = 0;
506 Buffer = NULL;
507
508 //
509 // Firstly get the real size of HII variable
510 //
511 Status = gRT->GetVariable (
512 (UINT16 *)VariableName,
513 VariableGuid,
514 NULL,
515 &Size,
516 Buffer
517 );
518
519 //
520 // Allocate buffer to hold whole variable data according to variable size.
521 //
522 if (Status == EFI_BUFFER_TOO_SMALL) {
523 Buffer = (UINT8 *) AllocatePool (Size);
524
525 ASSERT (Buffer != NULL);
526
527 Status = gRT->GetVariable (
528 VariableName,
529 VariableGuid,
530 NULL,
531 &Size,
532 Buffer
533 );
534
535 ASSERT (Status == EFI_SUCCESS);
536 *VariableData = Buffer;
537 *VariableSize = Size;
538 }
539
540 return Status;
541 }
542
543 /**
544 Find the local token number according to system SKU ID.
545
546 @param LocalTokenNumber PCD token number
547 @param Size The size of PCD entry.
548 @param IsPeiDb If TRUE, the PCD entry is initialized in PEI phase.
549 If False, the PCD entry is initialized in DXE phase.
550
551 @return Token number according to system SKU ID.
552
553 **/
554 UINT32
555 GetSkuEnabledTokenNumber (
556 UINT32 LocalTokenNumber,
557 UINTN Size,
558 BOOLEAN IsPeiDb
559 )
560 {
561 SKU_HEAD *SkuHead;
562 SKU_ID *SkuIdTable;
563 INTN Index;
564 UINT8 *Value;
565 SKU_ID *PhaseSkuIdTable;
566 UINT8 *PcdDb;
567
568 ASSERT ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0);
569
570 PcdDb = IsPeiDb ? (UINT8 *) &mPcdDatabase->PeiDb : (UINT8 *) &mPcdDatabase->DxeDb;
571
572 SkuHead = (SKU_HEAD *) (PcdDb + (LocalTokenNumber & PCD_DATABASE_OFFSET_MASK));
573 Value = (UINT8 *) (PcdDb + SkuHead->SkuDataStartOffset);
574
575 PhaseSkuIdTable = IsPeiDb ? mPcdDatabase->PeiDb.Init.SkuIdTable :
576 mPcdDatabase->DxeDb.Init.SkuIdTable;
577
578 SkuIdTable = &PhaseSkuIdTable[SkuHead->SkuIdTableOffset];
579
580 //
581 // Find the current system's SKU ID entry in SKU ID table.
582 //
583 for (Index = 0; Index < SkuIdTable[0]; Index++) {
584 if (mPcdDatabase->PeiDb.Init.SystemSkuId == SkuIdTable[Index + 1]) {
585 break;
586 }
587 }
588 ASSERT (Index < SkuIdTable[0]);
589
590 switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {
591 case PCD_TYPE_VPD:
592 Value = (UINT8 *) &(((VPD_HEAD *) Value)[Index]);
593 return (UINT32) ((Value - PcdDb) | PCD_TYPE_VPD);
594
595 case PCD_TYPE_HII:
596 Value = (UINT8 *) &(((VARIABLE_HEAD *) Value)[Index]);
597 return (UINT32) ((Value - PcdDb) | PCD_TYPE_HII);
598
599 case PCD_TYPE_STRING:
600 Value = (UINT8 *) &(((STRING_HEAD *) Value)[Index]);
601 return (UINT32) ((Value - PcdDb) | PCD_TYPE_STRING);
602
603 case PCD_TYPE_DATA:
604 Value += Size * Index;
605 return (UINT32) (Value - PcdDb);
606
607 default:
608 ASSERT (FALSE);
609 }
610
611 ASSERT (FALSE);
612
613 return 0;
614
615 }
616
617 /**
618 Invoke the callback function when dynamic PCD entry was set, if this PCD entry
619 has registered callback function.
620
621 @param ExTokenNumber DynamicEx PCD's token number, if this PCD entry is dyanmicEx
622 type PCD.
623 @param Guid DynamicEx PCD's guid, if this PCD entry is dynamicEx type
624 PCD.
625 @param TokenNumber PCD token number generated by build tools.
626 @param Data Value want to be set for this PCD entry
627 @param Size The size of value
628
629 **/
630 VOID
631 InvokeCallbackOnSet (
632 UINT32 ExTokenNumber,
633 CONST EFI_GUID *Guid, OPTIONAL
634 UINTN TokenNumber,
635 VOID *Data,
636 UINTN Size
637 )
638 {
639 CALLBACK_FN_ENTRY *FnTableEntry;
640 LIST_ENTRY *ListHead;
641 LIST_ENTRY *ListNode;
642
643 //
644 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
645 // We have to decrement TokenNumber by 1 to make it usable
646 // as the array index of mCallbackFnTable[].
647 //
648 ListHead = &mCallbackFnTable[TokenNumber - 1];
649 ListNode = GetFirstNode (ListHead);
650
651 while (ListNode != ListHead) {
652 FnTableEntry = CR_FNENTRY_FROM_LISTNODE (ListNode, CALLBACK_FN_ENTRY, Node);
653
654 FnTableEntry->CallbackFn(Guid,
655 (Guid == NULL) ? TokenNumber : ExTokenNumber,
656 Data,
657 Size);
658
659 ListNode = GetNextNode (ListHead, ListNode);
660 }
661
662 return;
663 }
664
665
666 /**
667 Wrapper function for setting non-pointer type value for a PCD entry.
668
669 @param TokenNumber Pcd token number autogenerated by build tools.
670 @param Data Value want to be set for PCD entry
671 @param Size Size of value.
672
673 @return status of SetWorker.
674
675 **/
676 EFI_STATUS
677 SetValueWorker (
678 IN UINTN TokenNumber,
679 IN VOID *Data,
680 IN UINTN Size
681 )
682 {
683 return SetWorker (TokenNumber, Data, &Size, FALSE);
684 }
685
686
687 /**
688 Set value for an PCD entry
689
690 @param TokenNumber Pcd token number autogenerated by build tools.
691 @param Data Value want to be set for PCD entry
692 @param Size Size of value.
693 @param PtrType If TRUE, the type of PCD entry's value is Pointer.
694 If False, the type of PCD entry's value is not Pointer.
695
696 @retval EFI_INVALID_PARAMETER If this PCD type is VPD, VPD PCD can not be set.
697 @retval EFI_INVALID_PARAMETER If Size can not be set to size table.
698 @retval EFI_INVALID_PARAMETER If Size of non-Ptr type PCD does not match the size information in PCD database.
699 @retval EFI_NOT_FOUND If value type of PCD entry is intergrate, but not in
700 range of UINT8, UINT16, UINT32, UINT64
701 @retval EFI_NOT_FOUND Can not find the PCD type according to token number.
702 **/
703 EFI_STATUS
704 SetWorker (
705 IN UINTN TokenNumber,
706 IN VOID *Data,
707 IN OUT UINTN *Size,
708 IN BOOLEAN PtrType
709 )
710 {
711 UINT32 *LocalTokenNumberTable;
712 BOOLEAN IsPeiDb;
713 UINT32 LocalTokenNumber;
714 EFI_GUID *GuidTable;
715 UINT8 *StringTable;
716 EFI_GUID *Guid;
717 UINT16 *Name;
718 UINTN VariableOffset;
719 VOID *InternalData;
720 VARIABLE_HEAD *VariableHead;
721 UINTN Offset;
722 UINT8 *PcdDb;
723 EFI_STATUS Status;
724 UINTN MaxSize;
725 UINTN TmpTokenNumber;
726
727 //
728 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
729 // We have to decrement TokenNumber by 1 to make it usable
730 // as the array index.
731 //
732 TokenNumber--;
733
734 TmpTokenNumber = TokenNumber;
735
736 //
737 // EBC compiler is very choosy. It may report warning about comparison
738 // between UINTN and 0 . So we add 1 in each size of the
739 // comparison.
740 //
741 ASSERT (TokenNumber + 1 < PCD_TOTAL_TOKEN_NUMBER + 1);
742
743 if (PtrType) {
744 if (*Size > DxePcdGetSize (TokenNumber + 1)) {
745 return EFI_INVALID_PARAMETER;
746 }
747 } else {
748 if (*Size != DxePcdGetSize (TokenNumber + 1)) {
749 return EFI_INVALID_PARAMETER;
750 }
751 }
752
753 //
754 // EBC compiler is very choosy. It may report warning about comparison
755 // between UINTN and 0 . So we add 1 in each size of the
756 // comparison.
757 //
758 if ((TokenNumber + 1 < PEI_NEX_TOKEN_NUMBER + 1) ||
759 (TokenNumber + 1 >= PEI_LOCAL_TOKEN_NUMBER + 1 || TokenNumber + 1 < (PEI_LOCAL_TOKEN_NUMBER + DXE_NEX_TOKEN_NUMBER + 1))) {
760 InvokeCallbackOnSet (0, NULL, TokenNumber + 1, Data, *Size);
761 }
762
763 //
764 // Aquire lock to prevent reentrance from TPL_CALLBACK level
765 //
766 EfiAcquireLock (&mPcdDatabaseLock);
767
768 //
769 // EBC compiler is very choosy. It may report warning about comparison
770 // between UINTN and 0 . So we add 1 in each size of the
771 // comparison.
772 //
773 IsPeiDb = (BOOLEAN) ((TokenNumber + 1 < PEI_LOCAL_TOKEN_NUMBER + 1) ? TRUE : FALSE);
774
775 LocalTokenNumberTable = IsPeiDb ? mPcdDatabase->PeiDb.Init.LocalTokenNumberTable :
776 mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
777
778 TokenNumber = IsPeiDb ? TokenNumber
779 : TokenNumber - PEI_LOCAL_TOKEN_NUMBER;
780
781 LocalTokenNumber = LocalTokenNumberTable[TokenNumber];
782
783 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == PCD_TYPE_SKU_ENABLED) {
784 if (PtrType) {
785 GetPtrTypeSize (TmpTokenNumber, &MaxSize);
786 } else {
787 MaxSize = *Size;
788 }
789 LocalTokenNumber = GetSkuEnabledTokenNumber (LocalTokenNumber & ~PCD_TYPE_SKU_ENABLED, MaxSize, IsPeiDb);
790 }
791
792 Offset = LocalTokenNumber & PCD_DATABASE_OFFSET_MASK;
793
794 PcdDb = IsPeiDb ? ((UINT8 *) &mPcdDatabase->PeiDb) : ((UINT8 *) &mPcdDatabase->DxeDb);
795
796 if (IsPeiDb) {
797 StringTable = (UINT8 *) (&mPcdDatabase->PeiDb.Init.StringTable[0]);
798 } else {
799 StringTable = (UINT8 *) (&mPcdDatabase->DxeDb.Init.StringTable[0]);
800 }
801
802
803 InternalData = PcdDb + Offset;
804
805 switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {
806 case PCD_TYPE_VPD:
807 ASSERT (FALSE);
808 Status = EFI_INVALID_PARAMETER;
809 break;
810
811 case PCD_TYPE_STRING:
812 if (SetPtrTypeSize (TmpTokenNumber, Size)) {
813 CopyMem (StringTable + *((UINT16 *)InternalData), Data, *Size);
814 Status = EFI_SUCCESS;
815 } else {
816 Status = EFI_INVALID_PARAMETER;
817 }
818 break;
819
820 case PCD_TYPE_HII|PCD_TYPE_STRING:
821 case PCD_TYPE_HII:
822 if (PtrType) {
823 if (!SetPtrTypeSize (TmpTokenNumber, Size)) {
824 Status = EFI_INVALID_PARAMETER;
825 break;
826 }
827 }
828
829 if (IsPeiDb) {
830 GuidTable = (EFI_GUID *) (&mPcdDatabase->PeiDb.Init.GuidTable[0]);
831 } else {
832 GuidTable = (EFI_GUID *) (&mPcdDatabase->DxeDb.Init.GuidTable[0]);
833 }
834
835 VariableHead = (VARIABLE_HEAD *) (PcdDb + Offset);
836
837 Guid = GuidTable + VariableHead->GuidTableIndex;
838 Name = (UINT16*) (StringTable + VariableHead->StringIndex);
839 VariableOffset = VariableHead->Offset;
840 Status = SetHiiVariable (Guid, Name, Data, *Size, VariableOffset);
841
842 if (EFI_NOT_FOUND == Status) {
843 if ((LocalTokenNumber & PCD_TYPE_ALL_SET) == (PCD_TYPE_HII|PCD_TYPE_STRING)) {
844 CopyMem (
845 StringTable + *(UINT16 *)(PcdDb + VariableHead->DefaultValueOffset),
846 Data,
847 *Size
848 );
849 } else {
850 CopyMem (PcdDb + VariableHead->DefaultValueOffset, Data, *Size);
851 }
852 Status = EFI_SUCCESS;
853 }
854 break;
855
856 case PCD_TYPE_DATA:
857 if (PtrType) {
858 if (SetPtrTypeSize (TmpTokenNumber, Size)) {
859 CopyMem (InternalData, Data, *Size);
860 Status = EFI_SUCCESS;
861 } else {
862 Status = EFI_INVALID_PARAMETER;
863 }
864 break;
865 }
866
867 Status = EFI_SUCCESS;
868 switch (*Size) {
869 case sizeof(UINT8):
870 *((UINT8 *) InternalData) = *((UINT8 *) Data);
871 break;
872
873 case sizeof(UINT16):
874 *((UINT16 *) InternalData) = *((UINT16 *) Data);
875 break;
876
877 case sizeof(UINT32):
878 *((UINT32 *) InternalData) = *((UINT32 *) Data);
879 break;
880
881 case sizeof(UINT64):
882 *((UINT64 *) InternalData) = *((UINT64 *) Data);
883 break;
884
885 default:
886 ASSERT (FALSE);
887 Status = EFI_NOT_FOUND;
888 break;
889 }
890 break;
891
892 default:
893 ASSERT (FALSE);
894 Status = EFI_NOT_FOUND;
895 break;
896 }
897
898 EfiReleaseLock (&mPcdDatabaseLock);
899
900 return Status;
901 }
902
903 /**
904 Wrapper function for get PCD value for dynamic-ex PCD.
905
906 @param Guid Token space guid for dynamic-ex PCD.
907 @param ExTokenNumber Token number for dynamic-ex PCD.
908 @param GetSize The size of dynamic-ex PCD value.
909
910 @return PCD entry in PCD database.
911
912 **/
913 VOID *
914 ExGetWorker (
915 IN CONST EFI_GUID *Guid,
916 IN UINTN ExTokenNumber,
917 IN UINTN GetSize
918 )
919 {
920 return GetWorker(GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber), GetSize);
921 }
922
923 /**
924 Wrapper function for set PCD value for non-Pointer type dynamic-ex PCD.
925
926 @param ExTokenNumber Token number for dynamic-ex PCD.
927 @param Guid Token space guid for dynamic-ex PCD.
928 @param Data Value want to be set.
929 @param SetSize The size of value.
930
931 @return status of ExSetWorker().
932
933 **/
934 EFI_STATUS
935 ExSetValueWorker (
936 IN UINTN ExTokenNumber,
937 IN CONST EFI_GUID *Guid,
938 IN VOID *Data,
939 IN UINTN SetSize
940 )
941 {
942 return ExSetWorker (ExTokenNumber, Guid, Data, &SetSize, FALSE);
943 }
944
945 /**
946 Set value for a dynamic PCD entry.
947
948 This routine find the local token number according to dynamic-ex PCD's token
949 space guid and token number firstly, and invoke callback function if this PCD
950 entry registered callback function. Finally, invoken general SetWorker to set
951 PCD value.
952
953 @param ExTokenNumber Dynamic-ex PCD token number.
954 @param Guid Token space guid for dynamic-ex PCD.
955 @param Data PCD value want to be set
956 @param SetSize Size of value.
957 @param PtrType If TRUE, this PCD entry is pointer type.
958 If FALSE, this PCD entry is not pointer type.
959
960 @return status of SetWorker().
961
962 **/
963 EFI_STATUS
964 ExSetWorker (
965 IN UINTN ExTokenNumber,
966 IN CONST EFI_GUID *Guid,
967 IN VOID *Data,
968 IN OUT UINTN *SetSize,
969 IN BOOLEAN PtrType
970 )
971 {
972 UINTN TokenNumber;
973
974 TokenNumber = GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber);
975
976 InvokeCallbackOnSet ((UINT32) ExTokenNumber, Guid, TokenNumber, Data, *SetSize);
977
978 return SetWorker (TokenNumber, Data, SetSize, PtrType);
979
980 }
981
982 /**
983 Set value for HII-type PCD.
984
985 A HII-type PCD's value is stored in a variable. Setting/Getting the value of
986 HII-type PCD is to visit this variable.
987
988 @param VariableGuid Guid of variable which stored value of a HII-type PCD.
989 @param VariableName Unicode name of variable which stored value of a HII-type PCD.
990 @param Data Value want to be set.
991 @param DataSize Size of value
992 @param Offset Value offset of HII-type PCD in variable.
993
994 @return status of GetVariable()/SetVariable().
995
996 **/
997 EFI_STATUS
998 SetHiiVariable (
999 IN EFI_GUID *VariableGuid,
1000 IN UINT16 *VariableName,
1001 IN CONST VOID *Data,
1002 IN UINTN DataSize,
1003 IN UINTN Offset
1004 )
1005 {
1006 UINTN Size;
1007 VOID *Buffer;
1008 EFI_STATUS Status;
1009 UINT32 Attribute;
1010 UINTN SetSize;
1011
1012 Size = 0;
1013 SetSize = 0;
1014
1015 //
1016 // Try to get original variable size information.
1017 //
1018 Status = gRT->GetVariable (
1019 (UINT16 *)VariableName,
1020 VariableGuid,
1021 NULL,
1022 &Size,
1023 NULL
1024 );
1025
1026 if (Status == EFI_BUFFER_TOO_SMALL) {
1027 //
1028 // Patch new PCD's value to offset in given HII variable.
1029 //
1030 if (Size >= (DataSize + Offset)) {
1031 SetSize = Size;
1032 } else {
1033 SetSize = DataSize + Offset;
1034 }
1035 Buffer = AllocatePool (SetSize);
1036 ASSERT (Buffer != NULL);
1037
1038 Status = gRT->GetVariable (
1039 VariableName,
1040 VariableGuid,
1041 &Attribute,
1042 &Size,
1043 Buffer
1044 );
1045
1046 ASSERT_EFI_ERROR (Status);
1047
1048 CopyMem ((UINT8 *)Buffer + Offset, Data, DataSize);
1049
1050 Status = gRT->SetVariable (
1051 VariableName,
1052 VariableGuid,
1053 Attribute,
1054 SetSize,
1055 Buffer
1056 );
1057
1058 FreePool (Buffer);
1059 return Status;
1060 } else if (Status == EFI_NOT_FOUND) {
1061 //
1062 // If variable does not exist, a new variable need to be created.
1063 //
1064
1065 Size = Offset + DataSize;
1066
1067 Buffer = AllocateZeroPool (Size);
1068 ASSERT (Buffer != NULL);
1069
1070 CopyMem ((UINT8 *)Buffer + Offset, Data, DataSize);
1071
1072 Status = gRT->SetVariable (
1073 VariableName,
1074 VariableGuid,
1075 EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
1076 Size,
1077 Buffer
1078 );
1079
1080 FreePool (Buffer);
1081 return Status;
1082 }
1083
1084 //
1085 // If we drop to here, the value is failed to be written in to variable area
1086 // So, we will save the data in the PCD Database's volatile area.
1087 //
1088 return Status;
1089 }
1090
1091 /**
1092 Get local token number according to dynamic-ex PCD's {token space guid:token number}
1093
1094 A dynamic-ex type PCD, developer must provide pair of token space guid: token number
1095 in DEC file. PCD database maintain a mapping table that translate pair of {token
1096 space guid: token number} to local token number.
1097
1098 @param Guid Token space guid for dynamic-ex PCD entry.
1099 @param ExTokenNumber Dynamic-ex PCD token number.
1100
1101 @return local token number for dynamic-ex PCD.
1102
1103 **/
1104 UINTN
1105 GetExPcdTokenNumber (
1106 IN CONST EFI_GUID *Guid,
1107 IN UINT32 ExTokenNumber
1108 )
1109 {
1110 UINT32 Index;
1111 DYNAMICEX_MAPPING *ExMap;
1112 EFI_GUID *GuidTable;
1113 EFI_GUID *MatchGuid;
1114 UINTN MatchGuidIdx;
1115
1116 if (!PEI_DATABASE_EMPTY) {
1117 ExMap = mPcdDatabase->PeiDb.Init.ExMapTable;
1118 GuidTable = mPcdDatabase->PeiDb.Init.GuidTable;
1119
1120 MatchGuid = ScanGuid (GuidTable, sizeof(mPcdDatabase->PeiDb.Init.GuidTable), Guid);
1121
1122 if (MatchGuid != NULL) {
1123
1124 MatchGuidIdx = MatchGuid - GuidTable;
1125
1126 for (Index = 0; Index < PEI_EXMAPPING_TABLE_SIZE; Index++) {
1127 if ((ExTokenNumber == ExMap[Index].ExTokenNumber) &&
1128 (MatchGuidIdx == ExMap[Index].ExGuidIndex)) {
1129 return ExMap[Index].LocalTokenNumber;
1130 }
1131 }
1132 }
1133 }
1134
1135 ExMap = mPcdDatabase->DxeDb.Init.ExMapTable;
1136 GuidTable = mPcdDatabase->DxeDb.Init.GuidTable;
1137
1138 MatchGuid = ScanGuid (GuidTable, sizeof(mPcdDatabase->DxeDb.Init.GuidTable), Guid);
1139 //
1140 // We need to ASSERT here. If GUID can't be found in GuidTable, this is a
1141 // error in the BUILD system.
1142 //
1143 ASSERT (MatchGuid != NULL);
1144
1145 MatchGuidIdx = MatchGuid - GuidTable;
1146
1147 for (Index = 0; Index < DXE_EXMAPPING_TABLE_SIZE; Index++) {
1148 if ((ExTokenNumber == ExMap[Index].ExTokenNumber) &&
1149 (MatchGuidIdx == ExMap[Index].ExGuidIndex)) {
1150 return ExMap[Index].LocalTokenNumber;
1151 }
1152 }
1153
1154 ASSERT (FALSE);
1155
1156 return 0;
1157 }
1158
1159 /**
1160 Get SKU ID table from PCD database.
1161
1162 @param LocalTokenNumberTableIdx Index of local token number in token number table.
1163 @param IsPeiPcd If TRUE,
1164
1165 @return Pointer to SKU ID array table
1166
1167 **/
1168 SKU_ID *
1169 GetSkuIdArray (
1170 IN UINTN LocalTokenNumberTableIdx,
1171 IN BOOLEAN IsPeiPcd
1172 )
1173 {
1174 SKU_HEAD *SkuHead;
1175 UINTN LocalTokenNumber;
1176 UINT8 *Database;
1177
1178 if (IsPeiPcd) {
1179 LocalTokenNumber = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable[LocalTokenNumberTableIdx];
1180 Database = (UINT8 *) &mPcdDatabase->PeiDb;
1181 } else {
1182 LocalTokenNumber = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable[LocalTokenNumberTableIdx - PEI_LOCAL_TOKEN_NUMBER];
1183 Database = (UINT8 *) &mPcdDatabase->DxeDb;
1184 }
1185
1186 ASSERT ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) != 0);
1187
1188 SkuHead = (SKU_HEAD *) ((UINT8 *)Database + (LocalTokenNumber & PCD_DATABASE_OFFSET_MASK));
1189
1190 return (SKU_ID *) (Database + SkuHead->SkuIdTableOffset);
1191
1192 }
1193
1194 /**
1195 Wrapper function of getting index of PCD entry in size table.
1196
1197 @param LocalTokenNumberTableIdx Index of this PCD in local token number table.
1198 @param IsPeiDb If TRUE, the pcd entry is initialized in PEI phase,
1199 If FALSE, the pcd entry is initialized in DXE phase.
1200
1201 @return index of PCD entry in size table.
1202 **/
1203 UINTN
1204 GetSizeTableIndex (
1205 IN UINTN LocalTokenNumberTableIdx,
1206 IN BOOLEAN IsPeiDb
1207 )
1208 {
1209 UINT32 *LocalTokenNumberTable;
1210 UINTN LocalTokenNumber;
1211 UINTN Index;
1212 UINTN SizeTableIdx;
1213 SKU_ID *SkuIdTable;
1214
1215 if (IsPeiDb) {
1216 LocalTokenNumberTable = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable;
1217 } else {
1218 LocalTokenNumberTable = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
1219 }
1220
1221 SizeTableIdx = 0;
1222
1223 for (Index = 0; Index < LocalTokenNumberTableIdx; Index ++) {
1224 LocalTokenNumber = LocalTokenNumberTable[Index];
1225
1226 if ((LocalTokenNumber & PCD_DATUM_TYPE_ALL_SET) == PCD_DATUM_TYPE_POINTER) {
1227 //
1228 // SizeTable only contain record for PCD_DATUM_TYPE_POINTER type
1229 // PCD entry.
1230 //
1231 if ((LocalTokenNumber & PCD_TYPE_VPD) != 0) {
1232 //
1233 // We have only one entry for VPD enabled PCD entry:
1234 // 1) MAX Size.
1235 // We consider current size is equal to MAX size.
1236 //
1237 SizeTableIdx++;
1238 } else {
1239 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
1240 //
1241 // We have only two entry for Non-Sku enabled PCD entry:
1242 // 1) MAX SIZE
1243 // 2) Current Size
1244 //
1245 SizeTableIdx += 2;
1246 } else {
1247 //
1248 // We have these entry for SKU enabled PCD entry
1249 // 1) MAX SIZE
1250 // 2) Current Size for each SKU_ID (It is equal to MaxSku).
1251 //
1252 SkuIdTable = GetSkuIdArray (Index, IsPeiDb);
1253 SizeTableIdx += (UINTN)*SkuIdTable + 1;
1254 }
1255 }
1256 }
1257
1258 }
1259
1260 return SizeTableIdx;
1261 }
1262
1263 /**
1264 Get size of POINTER type PCD value.
1265
1266 @param LocalTokenNumberTableIdx Index of local token number in local token number table.
1267 @param MaxSize Maxmium size of POINTER type PCD value.
1268
1269 @return size of POINTER type PCD value.
1270
1271 **/
1272 UINTN
1273 GetPtrTypeSize (
1274 IN UINTN LocalTokenNumberTableIdx,
1275 OUT UINTN *MaxSize
1276 )
1277 {
1278 INTN SizeTableIdx;
1279 UINTN LocalTokenNumber;
1280 SKU_ID *SkuIdTable;
1281 SIZE_INFO *SizeTable;
1282 UINTN Index;
1283 BOOLEAN IsPeiDb;
1284 UINT32 *LocalTokenNumberTable;
1285
1286 // EBC compiler is very choosy. It may report warning about comparison
1287 // between UINTN and 0 . So we add 1 in each size of the
1288 // comparison.
1289 IsPeiDb = (BOOLEAN) (LocalTokenNumberTableIdx + 1 < PEI_LOCAL_TOKEN_NUMBER + 1);
1290
1291
1292 if (IsPeiDb) {
1293 LocalTokenNumberTable = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable;
1294 SizeTable = mPcdDatabase->PeiDb.Init.SizeTable;
1295 } else {
1296 LocalTokenNumberTableIdx -= PEI_LOCAL_TOKEN_NUMBER;
1297 LocalTokenNumberTable = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
1298 SizeTable = mPcdDatabase->DxeDb.Init.SizeTable;
1299 }
1300
1301 LocalTokenNumber = LocalTokenNumberTable[LocalTokenNumberTableIdx];
1302
1303 ASSERT ((LocalTokenNumber & PCD_DATUM_TYPE_ALL_SET) == PCD_DATUM_TYPE_POINTER);
1304
1305 SizeTableIdx = GetSizeTableIndex (LocalTokenNumberTableIdx, IsPeiDb);
1306
1307 *MaxSize = SizeTable[SizeTableIdx];
1308 //
1309 // SizeTable only contain record for PCD_DATUM_TYPE_POINTER type
1310 // PCD entry.
1311 //
1312 if ((LocalTokenNumber & PCD_TYPE_VPD) != 0) {
1313 //
1314 // We have only one entry for VPD enabled PCD entry:
1315 // 1) MAX Size.
1316 // We consider current size is equal to MAX size.
1317 //
1318 return *MaxSize;
1319 } else {
1320 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
1321 //
1322 // We have only two entry for Non-Sku enabled PCD entry:
1323 // 1) MAX SIZE
1324 // 2) Current Size
1325 //
1326 return SizeTable[SizeTableIdx + 1];
1327 } else {
1328 //
1329 // We have these entry for SKU enabled PCD entry
1330 // 1) MAX SIZE
1331 // 2) Current Size for each SKU_ID (It is equal to MaxSku).
1332 //
1333 SkuIdTable = GetSkuIdArray (LocalTokenNumberTableIdx, IsPeiDb);
1334 for (Index = 0; Index < SkuIdTable[0]; Index++) {
1335 if (SkuIdTable[1 + Index] == mPcdDatabase->PeiDb.Init.SystemSkuId) {
1336 return SizeTable[SizeTableIdx + 1 + Index];
1337 }
1338 }
1339 return SizeTable[SizeTableIdx + 1];
1340 }
1341 }
1342 }
1343
1344 /**
1345 Set size of POINTER type PCD value. The size should not exceed the maximum size
1346 of this PCD value.
1347
1348 @param LocalTokenNumberTableIdx Index of local token number in local token number table.
1349 @param CurrentSize Size of POINTER type PCD value.
1350
1351 @retval TRUE Success to set size of PCD value.
1352 @retval FALSE Fail to set size of PCD value.
1353 **/
1354 BOOLEAN
1355 SetPtrTypeSize (
1356 IN UINTN LocalTokenNumberTableIdx,
1357 IN OUT UINTN *CurrentSize
1358 )
1359 {
1360 INTN SizeTableIdx;
1361 UINTN LocalTokenNumber;
1362 SKU_ID *SkuIdTable;
1363 SIZE_INFO *SizeTable;
1364 UINTN Index;
1365 UINTN MaxSize;
1366 BOOLEAN IsPeiDb;
1367 UINT32 *LocalTokenNumberTable;
1368
1369 //
1370 // EBC compiler is very choosy. It may report warning about comparison
1371 // between UINTN and 0 . So we add 1 in each size of the
1372 // comparison.
1373 //
1374 IsPeiDb = (BOOLEAN) (LocalTokenNumberTableIdx + 1 < PEI_LOCAL_TOKEN_NUMBER + 1);
1375
1376 if (IsPeiDb) {
1377 LocalTokenNumberTable = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable;
1378 SizeTable = mPcdDatabase->PeiDb.Init.SizeTable;
1379 } else {
1380 LocalTokenNumberTableIdx -= PEI_LOCAL_TOKEN_NUMBER;
1381 LocalTokenNumberTable = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
1382 SizeTable = mPcdDatabase->DxeDb.Init.SizeTable;
1383 }
1384
1385 LocalTokenNumber = LocalTokenNumberTable[LocalTokenNumberTableIdx];
1386
1387 ASSERT ((LocalTokenNumber & PCD_DATUM_TYPE_ALL_SET) == PCD_DATUM_TYPE_POINTER);
1388
1389 SizeTableIdx = GetSizeTableIndex (LocalTokenNumberTableIdx, IsPeiDb);
1390
1391 MaxSize = SizeTable[SizeTableIdx];
1392 //
1393 // SizeTable only contain record for PCD_DATUM_TYPE_POINTER type
1394 // PCD entry.
1395 //
1396 if ((LocalTokenNumber & PCD_TYPE_VPD) != 0) {
1397 //
1398 // We shouldn't come here as we don't support SET for VPD
1399 //
1400 ASSERT (FALSE);
1401 return FALSE;
1402 } else {
1403 if ((*CurrentSize > MaxSize) ||
1404 (*CurrentSize == MAX_ADDRESS)) {
1405 *CurrentSize = MaxSize;
1406 return FALSE;
1407 }
1408
1409 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
1410 //
1411 // We have only two entry for Non-Sku enabled PCD entry:
1412 // 1) MAX SIZE
1413 // 2) Current Size
1414 //
1415 SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
1416 return TRUE;
1417 } else {
1418 //
1419 // We have these entry for SKU enabled PCD entry
1420 // 1) MAX SIZE
1421 // 2) Current Size for each SKU_ID (It is equal to MaxSku).
1422 //
1423 SkuIdTable = GetSkuIdArray (LocalTokenNumberTableIdx, IsPeiDb);
1424 for (Index = 0; Index < SkuIdTable[0]; Index++) {
1425 if (SkuIdTable[1 + Index] == mPcdDatabase->PeiDb.Init.SystemSkuId) {
1426 SizeTable[SizeTableIdx + 1 + Index] = (SIZE_INFO) *CurrentSize;
1427 return TRUE;
1428 }
1429 }
1430 SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
1431 return TRUE;
1432 }
1433 }
1434 }
EFI Development Kit II mirror for PVE