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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 - 2007, Intel Corporation
5 All rights reserved. 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) (FixedPcdGet32(PcdVpdBaseAddress) + VpdHead->Offset);
123 break;
124
125 case PCD_TYPE_HII:
126 if (IsPeiDb) {
127 GuidTable = (EFI_GUID *) (&mPcdDatabase->PeiDb.Init.GuidTable[0]);
128 } else {
129 GuidTable = (EFI_GUID *) (&mPcdDatabase->DxeDb.Init.GuidTable[0]);
130 }
131
132 VariableHead = (VARIABLE_HEAD *) (PcdDb + Offset);
133
134 Guid = GuidTable + VariableHead->GuidTableIndex;
135 Name = (UINT16*)(StringTable + VariableHead->StringIndex);
136 VaraiableDefaultBuffer = (UINT8 *) PcdDb + VariableHead->DefaultValueOffset;
137
138 Status = GetHiiVariable (Guid, Name, &Data, &DataSize);
139 if (Status == EFI_SUCCESS) {
140 if (GetSize == 0) {
141 //
142 // It is a pointer type. So get the MaxSize reserved for
143 // this PCD entry.
144 //
145 GetPtrTypeSize (TmpTokenNumber, &GetSize);
146 }
147 CopyMem (VaraiableDefaultBuffer, Data + VariableHead->Offset, GetSize);
148 FreePool (Data);
149 }
150 //
151 // If the operation is successful, we copy the data
152 // to the default value buffer in the PCD Database.
153 // So that we can free the Data allocated in GetHiiVariable.
154 //
155 //
156 // If the operation is not successful,
157 // Return 1) either the default value specified by Platform Integrator
158 // 2) Or the value Set by a PCD set operation.
159 //
160 RetPtr = (VOID *) VaraiableDefaultBuffer;
161 break;
162
163 case PCD_TYPE_STRING:
164 StringTableIdx = *(UINT16*)((UINT8 *) PcdDb + Offset);
165 RetPtr = (VOID *) (StringTable + StringTableIdx);
166 break;
167
168 case PCD_TYPE_DATA:
169 RetPtr = (VOID *) ((UINT8 *) PcdDb + Offset);
170 break;
171
172 default:
173 ASSERT (FALSE);
174 break;
175
176 }
177
178 EfiReleaseLock (&mPcdDatabaseLock);
179
180 return RetPtr;
181
182 }
183
184 /**
185 Register the callback function for a PCD entry.
186
187 This routine will register a callback function to a PCD entry by given token number
188 and token space guid.
189
190 @param TokenNumber PCD token's number, it is autogened by build tools.
191 @param Guid PCD token space's guid,
192 if not NULL, this PCD is dynamicEx type PCD.
193 @param CallBackFunction Callback function pointer
194
195 @return EFI_SUCCESS Always success for registering callback function.
196
197 **/
198 EFI_STATUS
199 DxeRegisterCallBackWorker (
200 IN UINTN TokenNumber,
201 IN CONST EFI_GUID *Guid, OPTIONAL
202 IN PCD_PROTOCOL_CALLBACK CallBackFunction
203 )
204 {
205 CALLBACK_FN_ENTRY *FnTableEntry;
206 LIST_ENTRY *ListHead;
207 LIST_ENTRY *ListNode;
208
209 if (Guid != NULL) {
210 TokenNumber = GetExPcdTokenNumber (Guid, (UINT32) TokenNumber);
211 }
212
213 //
214 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
215 // We have to decrement TokenNumber by 1 to make it usable
216 // as the array index.
217 //
218 TokenNumber--;
219
220 ListHead = &mCallbackFnTable[TokenNumber];
221 ListNode = GetFirstNode (ListHead);
222
223 while (ListNode != ListHead) {
224 FnTableEntry = CR_FNENTRY_FROM_LISTNODE(ListNode, CALLBACK_FN_ENTRY, Node);
225
226 if (FnTableEntry->CallbackFn == CallBackFunction) {
227 //
228 // We only allow a Callback function to be register once
229 // for a TokenNumber. So just return EFI_SUCCESS
230 //
231 return EFI_SUCCESS;
232 }
233 ListNode = GetNextNode (ListHead, ListNode);
234 }
235
236 FnTableEntry = AllocatePool (sizeof(CALLBACK_FN_ENTRY));
237 ASSERT (FnTableEntry != NULL);
238
239 FnTableEntry->CallbackFn = CallBackFunction;
240 InsertTailList (ListHead, &FnTableEntry->Node);
241
242 return EFI_SUCCESS;
243 }
244
245 /**
246 UnRegister the callback function for a PCD entry.
247
248 This routine will unregister a callback function to a PCD entry by given token number
249 and token space guid.
250
251 @param TokenNumber PCD token's number, it is autogened by build tools.
252 @param Guid PCD token space's guid.
253 if not NULL, this PCD is dynamicEx type PCD.
254 @param CallBackFunction Callback function pointer
255
256 @retval EFI_SUCCESS Callback function is success to be unregister.
257 @retval EFI_INVALID_PARAMETER Can not find the PCD entry by given token number.
258 **/
259 EFI_STATUS
260 DxeUnRegisterCallBackWorker (
261 IN UINTN TokenNumber,
262 IN CONST EFI_GUID *Guid, OPTIONAL
263 IN PCD_PROTOCOL_CALLBACK CallBackFunction
264 )
265 {
266 CALLBACK_FN_ENTRY *FnTableEntry;
267 LIST_ENTRY *ListHead;
268 LIST_ENTRY *ListNode;
269
270 if (Guid != NULL) {
271 TokenNumber = GetExPcdTokenNumber (Guid, (UINT32) TokenNumber);
272 }
273
274 //
275 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
276 // We have to decrement TokenNumber by 1 to make it usable
277 // as the array index.
278 //
279 TokenNumber--;
280
281 ListHead = &mCallbackFnTable[TokenNumber];
282 ListNode = GetFirstNode (ListHead);
283
284 while (ListNode != ListHead) {
285 FnTableEntry = CR_FNENTRY_FROM_LISTNODE(ListNode, CALLBACK_FN_ENTRY, Node);
286
287 if (FnTableEntry->CallbackFn == CallBackFunction) {
288 //
289 // We only allow a Callback function to be register once
290 // for a TokenNumber. So we can safely remove the Node from
291 // the Link List and return EFI_SUCCESS.
292 //
293 RemoveEntryList (ListNode);
294 FreePool (FnTableEntry);
295
296 return EFI_SUCCESS;
297 }
298 ListNode = GetNextNode (ListHead, ListNode);
299 }
300
301 return EFI_INVALID_PARAMETER;
302 }
303
304 /**
305 Get next token number in given token space.
306
307 This routine is used for dynamicEx type PCD. It will firstly scan token space
308 table to get token space according to given token space guid. Then scan given
309 token number in found token space, if found, then return next token number in
310 this token space.
311
312 @param Guid Token space guid. Next token number will be scaned in
313 this token space.
314 @param TokenNumber Token number.
315 If PCD_INVALID_TOKEN_NUMBER, return first token number in
316 token space table.
317 If not PCD_INVALID_TOKEN_NUMBER, return next token number
318 in token space table.
319 @param GuidTable Token space guid table. It will be used for scan token space
320 by given token space guid.
321 @param SizeOfGuidTable The size of guid table.
322 @param ExMapTable DynamicEx token number mapping table.
323 @param SizeOfExMapTable The size of dynamicEx token number mapping table.
324
325 @retval EFI_NOT_FOUND Can not given token space or token number.
326 @retval EFI_SUCCESS Success to get next token number.
327
328 **/
329 EFI_STATUS
330 ExGetNextTokeNumber (
331 IN CONST EFI_GUID *Guid,
332 IN OUT UINTN *TokenNumber,
333 IN EFI_GUID *GuidTable,
334 IN UINTN SizeOfGuidTable,
335 IN DYNAMICEX_MAPPING *ExMapTable,
336 IN UINTN SizeOfExMapTable
337 )
338 {
339 EFI_GUID *MatchGuid;
340 UINTN Index;
341 UINTN GuidTableIdx;
342 BOOLEAN Found;
343
344 //
345 // Scan token space guid
346 //
347 MatchGuid = ScanGuid (GuidTable, SizeOfGuidTable, Guid);
348 if (MatchGuid == NULL) {
349 return EFI_NOT_FOUND;
350 }
351
352 //
353 // Find the token space table in dynamicEx mapping table.
354 //
355 Found = FALSE;
356 GuidTableIdx = MatchGuid - GuidTable;
357 for (Index = 0; Index < SizeOfExMapTable; Index++) {
358 if (ExMapTable[Index].ExGuidIndex == GuidTableIdx) {
359 Found = TRUE;
360 break;
361 }
362 }
363
364 if (Found) {
365 //
366 // If given token number is PCD_INVALID_TOKEN_NUMBER, then return the first
367 // token number in found token space.
368 //
369 if (*TokenNumber == PCD_INVALID_TOKEN_NUMBER) {
370 *TokenNumber = ExMapTable[Index].ExTokenNumber;
371 return EFI_SUCCESS;
372 }
373
374 for ( ; Index < SizeOfExMapTable; Index++) {
375 if (ExMapTable[Index].ExTokenNumber == *TokenNumber) {
376 Index ++;
377 if (Index == SizeOfExMapTable) {
378 //
379 // Exceed the length of ExMap Table
380 //
381 *TokenNumber = PCD_INVALID_TOKEN_NUMBER;
382 return EFI_SUCCESS;
383 } else if (ExMapTable[Index].ExGuidIndex == GuidTableIdx) {
384 //
385 // Found the next match
386 //
387 *TokenNumber = ExMapTable[Index].ExTokenNumber;
388 return EFI_SUCCESS;
389 } else {
390 //
391 // Guid has been changed. It is the next Token Space Guid.
392 // We should flag no more TokenNumber.
393 //
394 *TokenNumber = PCD_INVALID_TOKEN_NUMBER;
395 return EFI_SUCCESS;
396 }
397 }
398 }
399 }
400
401 return EFI_NOT_FOUND;
402 }
403
404
405 /**
406 Initialize the PCD database in DXE phase.
407
408 PCD database in DXE phase also contains PCD database in PEI phase which is copied
409 from GUID Hob.
410
411 **/
412 VOID
413 BuildPcdDxeDataBase (
414 VOID
415 )
416 {
417 PEI_PCD_DATABASE *PeiDatabase;
418 EFI_HOB_GUID_TYPE *GuidHob;
419 UINTN Index;
420
421 mPcdDatabase = AllocateZeroPool (sizeof(PCD_DATABASE));
422 ASSERT (mPcdDatabase != NULL);
423
424 GuidHob = GetFirstGuidHob (&gPcdDataBaseHobGuid);
425 if (GuidHob != NULL) {
426
427 //
428 // We will copy over the PEI phase's PCD Database.
429 //
430 // If no PEIMs use dynamic Pcd Entry, the Pcd Service PEIM
431 // should not be included at all. So the GuidHob could
432 // be NULL. If it is NULL, we just copy over the DXE Default
433 // Value to PCD Database.
434 //
435
436 PeiDatabase = (PEI_PCD_DATABASE *) GET_GUID_HOB_DATA (GuidHob);
437 //
438 // Copy PCD Entries refereneced in PEI phase to PCD DATABASE
439 //
440 CopyMem (&mPcdDatabase->PeiDb, PeiDatabase, sizeof (PEI_PCD_DATABASE));
441 }
442
443 //
444 // Copy PCD Entries with default value to PCD DATABASE
445 //
446 CopyMem (&mPcdDatabase->DxeDb.Init, &gDXEPcdDbInit, sizeof(DXE_PCD_DATABASE_INIT));
447
448
449 //
450 // Initialized the Callback Function Table
451 //
452
453 mCallbackFnTable = AllocateZeroPool (PCD_TOTAL_TOKEN_NUMBER * sizeof (LIST_ENTRY));
454 ASSERT(mCallbackFnTable != NULL);
455
456 // EBC compiler is very choosy. It may report warning about comparison
457 // between UINTN and 0 . So we add 1 in each size of the
458 // comparison.
459 for (Index = 0; Index + 1 < PCD_TOTAL_TOKEN_NUMBER + 1; Index++) {
460 InitializeListHead (&mCallbackFnTable[Index]);
461 }
462 }
463
464 /**
465 Get Variable which contains HII type PCD entry.
466
467 @param VariableGuid Variable's guid
468 @param VariableName Variable's unicode name string
469 @param VariableData Variable's data pointer,
470 @param VariableSize Variable's size.
471
472 @return the status of gRT->GetVariable
473 **/
474 EFI_STATUS
475 GetHiiVariable (
476 IN EFI_GUID *VariableGuid,
477 IN UINT16 *VariableName,
478 OUT UINT8 **VariableData,
479 OUT UINTN *VariableSize
480 )
481 {
482 UINTN Size;
483 EFI_STATUS Status;
484 UINT8 *Buffer;
485
486 Size = 0;
487 Buffer = NULL;
488
489 //
490 // Firstly get the real size of HII variable
491 //
492 Status = gRT->GetVariable (
493 (UINT16 *)VariableName,
494 VariableGuid,
495 NULL,
496 &Size,
497 Buffer
498 );
499
500 //
501 // Allocate buffer to hold whole variable data according to variable size.
502 //
503 if (Status == EFI_BUFFER_TOO_SMALL) {
504 Buffer = (UINT8 *) AllocatePool (Size);
505
506 ASSERT (Buffer != NULL);
507
508 Status = gRT->GetVariable (
509 VariableName,
510 VariableGuid,
511 NULL,
512 &Size,
513 Buffer
514 );
515
516 ASSERT (Status == EFI_SUCCESS);
517 *VariableData = Buffer;
518 *VariableSize = Size;
519 }
520
521 return Status;
522 }
523
524 /**
525 Find the local token number according to system SKU ID.
526
527 @param LocalTokenNumber PCD token number
528 @param Size The size of PCD entry.
529 @param IsPeiDb If TRUE, the PCD entry is initialized in PEI phase.
530 If False, the PCD entry is initialized in DXE phase.
531
532 @return Token number according to system SKU ID.
533
534 **/
535 UINT32
536 GetSkuEnabledTokenNumber (
537 UINT32 LocalTokenNumber,
538 UINTN Size,
539 BOOLEAN IsPeiDb
540 )
541 {
542 SKU_HEAD *SkuHead;
543 SKU_ID *SkuIdTable;
544 INTN Index;
545 UINT8 *Value;
546 SKU_ID *PhaseSkuIdTable;
547 UINT8 *PcdDb;
548
549 ASSERT ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0);
550
551 PcdDb = IsPeiDb ? (UINT8 *) &mPcdDatabase->PeiDb : (UINT8 *) &mPcdDatabase->DxeDb;
552
553 SkuHead = (SKU_HEAD *) (PcdDb + (LocalTokenNumber & PCD_DATABASE_OFFSET_MASK));
554 Value = (UINT8 *) (PcdDb + SkuHead->SkuDataStartOffset);
555
556 PhaseSkuIdTable = IsPeiDb ? mPcdDatabase->PeiDb.Init.SkuIdTable :
557 mPcdDatabase->DxeDb.Init.SkuIdTable;
558
559 SkuIdTable = &PhaseSkuIdTable[SkuHead->SkuIdTableOffset];
560
561 //
562 // Find the current system's SKU ID entry in SKU ID table.
563 //
564 for (Index = 0; Index < SkuIdTable[0]; Index++) {
565 if (mPcdDatabase->PeiDb.Init.SystemSkuId == SkuIdTable[Index + 1]) {
566 break;
567 }
568 }
569 ASSERT (Index < SkuIdTable[0]);
570
571 switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {
572 case PCD_TYPE_VPD:
573 Value = (UINT8 *) &(((VPD_HEAD *) Value)[Index]);
574 return (UINT32) ((Value - PcdDb) | PCD_TYPE_VPD);
575
576 case PCD_TYPE_HII:
577 Value = (UINT8 *) &(((VARIABLE_HEAD *) Value)[Index]);
578 return (UINT32) ((Value - PcdDb) | PCD_TYPE_HII);
579
580 case PCD_TYPE_STRING:
581 Value = (UINT8 *) &(((STRING_HEAD *) Value)[Index]);
582 return (UINT32) ((Value - PcdDb) | PCD_TYPE_STRING);
583
584 case PCD_TYPE_DATA:
585 Value += Size * Index;
586 return (UINT32) (Value - PcdDb);
587
588 default:
589 ASSERT (FALSE);
590 }
591
592 ASSERT (FALSE);
593
594 return 0;
595
596 }
597
598 /**
599 Invoke the callback function when dynamic PCD entry was set, if this PCD entry
600 has registered callback function.
601
602 @param ExTokenNumber DynamicEx PCD's token number, if this PCD entry is dyanmicEx
603 type PCD.
604 @param Guid DynamicEx PCD's guid, if this PCD entry is dynamicEx type
605 PCD.
606 @param TokenNumber PCD token number generated by build tools.
607 @param Data Value want to be set for this PCD entry
608 @param Size The size of value
609
610 **/
611 VOID
612 InvokeCallbackOnSet (
613 UINT32 ExTokenNumber,
614 CONST EFI_GUID *Guid, OPTIONAL
615 UINTN TokenNumber,
616 VOID *Data,
617 UINTN Size
618 )
619 {
620 CALLBACK_FN_ENTRY *FnTableEntry;
621 LIST_ENTRY *ListHead;
622 LIST_ENTRY *ListNode;
623
624 //
625 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
626 // We have to decrement TokenNumber by 1 to make it usable
627 // as the array index.
628 //
629 TokenNumber--;
630
631 ListHead = &mCallbackFnTable[TokenNumber];
632 ListNode = GetFirstNode (ListHead);
633
634 while (ListNode != ListHead) {
635 FnTableEntry = CR_FNENTRY_FROM_LISTNODE(ListNode, CALLBACK_FN_ENTRY, Node);
636
637 FnTableEntry->CallbackFn(Guid,
638 (Guid == NULL) ? TokenNumber : ExTokenNumber,
639 Data,
640 Size);
641
642 ListNode = GetNextNode (ListHead, ListNode);
643 }
644
645 return;
646 }
647
648
649 /**
650 Wrapper function for setting non-pointer type value for a PCD entry.
651
652 @param TokenNumber Pcd token number autogenerated by build tools.
653 @param Data Value want to be set for PCD entry
654 @param Size Size of value.
655
656 @return status of SetWorker.
657
658 **/
659 EFI_STATUS
660 SetValueWorker (
661 IN UINTN TokenNumber,
662 IN VOID *Data,
663 IN UINTN Size
664 )
665 {
666 return SetWorker (TokenNumber, Data, &Size, FALSE);
667 }
668
669
670 /**
671 Set value for an PCD entry
672
673 @param TokenNumber Pcd token number autogenerated by build tools.
674 @param Data Value want to be set for PCD entry
675 @param Size Size of value.
676 @param PtrType If TRUE, the type of PCD entry's value is Pointer.
677 If False, the type of PCD entry's value is not Pointer.
678
679 @retval EFI_INVALID_PARAMETER If this PCD type is VPD, VPD PCD can not be set.
680 @retval EFI_INVALID_PARAMETER If Size can not be set to size table.
681 @retval EFI_NOT_FOUND If value type of PCD entry is intergrate, but not in
682 range of UINT8, UINT16, UINT32, UINT64
683 @retval EFI_NOT_FOUND Can not find the PCD type according to token number.
684 **/
685 EFI_STATUS
686 SetWorker (
687 IN UINTN TokenNumber,
688 IN VOID *Data,
689 IN OUT UINTN *Size,
690 IN BOOLEAN PtrType
691 )
692 {
693 UINT32 *LocalTokenNumberTable;
694 BOOLEAN IsPeiDb;
695 UINT32 LocalTokenNumber;
696 EFI_GUID *GuidTable;
697 UINT8 *StringTable;
698 EFI_GUID *Guid;
699 UINT16 *Name;
700 UINTN VariableOffset;
701 VOID *InternalData;
702 VARIABLE_HEAD *VariableHead;
703 UINTN Offset;
704 UINT8 *PcdDb;
705 EFI_STATUS Status;
706 UINTN MaxSize;
707 UINTN TmpTokenNumber;
708
709 //
710 // Aquire lock to prevent reentrance from TPL_CALLBACK level
711 //
712 EfiAcquireLock (&mPcdDatabaseLock);
713
714 //
715 // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
716 // We have to decrement TokenNumber by 1 to make it usable
717 // as the array index.
718 //
719 TokenNumber--;
720
721 TmpTokenNumber = TokenNumber;
722
723 //
724 // EBC compiler is very choosy. It may report warning about comparison
725 // between UINTN and 0 . So we add 1 in each size of the
726 // comparison.
727 //
728 ASSERT (TokenNumber + 1 < PCD_TOTAL_TOKEN_NUMBER + 1);
729
730 if (!PtrType) {
731 ASSERT (*Size == DxePcdGetSize (TokenNumber + 1));
732 }
733
734 //
735 // EBC compiler is very choosy. It may report warning about comparison
736 // between UINTN and 0 . So we add 1 in each size of the
737 // comparison.
738 //
739 IsPeiDb = (BOOLEAN) ((TokenNumber + 1 < PEI_LOCAL_TOKEN_NUMBER + 1) ? TRUE : FALSE);
740
741 LocalTokenNumberTable = IsPeiDb ? mPcdDatabase->PeiDb.Init.LocalTokenNumberTable :
742 mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
743
744 //
745 // EBC compiler is very choosy. It may report warning about comparison
746 // between UINTN and 0 . So we add 1 in each size of the
747 // comparison.
748 //
749 if ((TokenNumber + 1 < PEI_NEX_TOKEN_NUMBER + 1) ||
750 (TokenNumber + 1 >= PEI_LOCAL_TOKEN_NUMBER + 1 || TokenNumber + 1 < (PEI_LOCAL_TOKEN_NUMBER + DXE_NEX_TOKEN_NUMBER + 1))) {
751 InvokeCallbackOnSet (0, NULL, TokenNumber + 1, Data, *Size);
752 }
753
754 TokenNumber = IsPeiDb ? TokenNumber
755 : TokenNumber - PEI_LOCAL_TOKEN_NUMBER;
756
757 LocalTokenNumber = LocalTokenNumberTable[TokenNumber];
758
759 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == PCD_TYPE_SKU_ENABLED) {
760 if (PtrType) {
761 GetPtrTypeSize (TmpTokenNumber, &MaxSize);
762 } else {
763 MaxSize = *Size;
764 }
765 LocalTokenNumber = GetSkuEnabledTokenNumber (LocalTokenNumber & ~PCD_TYPE_SKU_ENABLED, MaxSize, IsPeiDb);
766 }
767
768 Offset = LocalTokenNumber & PCD_DATABASE_OFFSET_MASK;
769
770 PcdDb = IsPeiDb ? ((UINT8 *) &mPcdDatabase->PeiDb) : ((UINT8 *) &mPcdDatabase->DxeDb);
771
772 if (IsPeiDb) {
773 StringTable = (UINT8 *) (&mPcdDatabase->PeiDb.Init.StringTable[0]);
774 } else {
775 StringTable = (UINT8 *) (&mPcdDatabase->DxeDb.Init.StringTable[0]);
776 }
777
778
779 InternalData = PcdDb + Offset;
780
781 switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {
782 case PCD_TYPE_VPD:
783 ASSERT (FALSE);
784 Status = EFI_INVALID_PARAMETER;
785 break;
786
787 case PCD_TYPE_STRING:
788 if (SetPtrTypeSize (TmpTokenNumber, Size)) {
789 CopyMem (StringTable + *((UINT16 *)InternalData), Data, *Size);
790 Status = EFI_SUCCESS;
791 } else {
792 Status = EFI_INVALID_PARAMETER;
793 }
794 break;
795
796 case PCD_TYPE_HII:
797 if (PtrType) {
798 if (!SetPtrTypeSize (TmpTokenNumber, Size)) {
799 Status = EFI_INVALID_PARAMETER;
800 break;
801 }
802 }
803
804 if (IsPeiDb) {
805 GuidTable = (EFI_GUID *) (&mPcdDatabase->PeiDb.Init.GuidTable[0]);
806 } else {
807 GuidTable = (EFI_GUID *) (&mPcdDatabase->DxeDb.Init.GuidTable[0]);
808 }
809
810 VariableHead = (VARIABLE_HEAD *) (PcdDb + Offset);
811
812 Guid = GuidTable + VariableHead->GuidTableIndex;
813 Name = (UINT16*) (StringTable + VariableHead->StringIndex);
814 VariableOffset = VariableHead->Offset;
815
816 Status = SetHiiVariable (Guid, Name, Data, *Size, VariableOffset);
817
818 if (EFI_NOT_FOUND == Status) {
819 CopyMem (PcdDb + VariableHead->DefaultValueOffset, Data, *Size);
820 Status = EFI_SUCCESS;
821 }
822 break;
823
824 case PCD_TYPE_DATA:
825 if (PtrType) {
826 if (SetPtrTypeSize (TmpTokenNumber, Size)) {
827 CopyMem (InternalData, Data, *Size);
828 Status = EFI_SUCCESS;
829 } else {
830 Status = EFI_INVALID_PARAMETER;
831 }
832 break;
833 }
834
835 Status = EFI_SUCCESS;
836 switch (*Size) {
837 case sizeof(UINT8):
838 *((UINT8 *) InternalData) = *((UINT8 *) Data);
839 break;
840
841 case sizeof(UINT16):
842 *((UINT16 *) InternalData) = *((UINT16 *) Data);
843 break;
844
845 case sizeof(UINT32):
846 *((UINT32 *) InternalData) = *((UINT32 *) Data);
847 break;
848
849 case sizeof(UINT64):
850 *((UINT64 *) InternalData) = *((UINT64 *) Data);
851 break;
852
853 default:
854 ASSERT (FALSE);
855 Status = EFI_NOT_FOUND;
856 break;
857 }
858 break;
859
860 default:
861 ASSERT (FALSE);
862 Status = EFI_NOT_FOUND;
863 break;
864 }
865
866 EfiReleaseLock (&mPcdDatabaseLock);
867
868 return Status;
869 }
870
871 /**
872 Wrapper function for get PCD value for dynamic-ex PCD.
873
874 @param Guid Token space guid for dynamic-ex PCD.
875 @param ExTokenNumber Token number for dynamic-ex PCD.
876 @param GetSize The size of dynamic-ex PCD value.
877
878 @return PCD entry in PCD database.
879
880 **/
881 VOID *
882 ExGetWorker (
883 IN CONST EFI_GUID *Guid,
884 IN UINTN ExTokenNumber,
885 IN UINTN GetSize
886 )
887 {
888 return GetWorker(GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber), GetSize);
889 }
890
891 /**
892 Wrapper function for set PCD value for non-Pointer type dynamic-ex PCD.
893
894 @param ExTokenNumber Token number for dynamic-ex PCD.
895 @param Guid Token space guid for dynamic-ex PCD.
896 @param Data Value want to be set.
897 @param SetSize The size of value.
898
899 @return status of ExSetWorker().
900
901 **/
902 EFI_STATUS
903 ExSetValueWorker (
904 IN UINTN ExTokenNumber,
905 IN CONST EFI_GUID *Guid,
906 IN VOID *Data,
907 IN UINTN SetSize
908 )
909 {
910 return ExSetWorker (ExTokenNumber, Guid, Data, &SetSize, FALSE);
911 }
912
913 /**
914 Set value for a dynamic PCD entry.
915
916 This routine find the local token number according to dynamic-ex PCD's token
917 space guid and token number firstly, and invoke callback function if this PCD
918 entry registered callback function. Finally, invoken general SetWorker to set
919 PCD value.
920
921 @param ExTokenNumber Dynamic-ex PCD token number.
922 @param Guid Token space guid for dynamic-ex PCD.
923 @param Data PCD value want to be set
924 @param SetSize Size of value.
925 @param PtrType If TRUE, this PCD entry is pointer type.
926 If FALSE, this PCD entry is not pointer type.
927
928 @return status of SetWorker().
929
930 **/
931 EFI_STATUS
932 ExSetWorker (
933 IN UINTN ExTokenNumber,
934 IN CONST EFI_GUID *Guid,
935 IN VOID *Data,
936 IN OUT UINTN *SetSize,
937 IN BOOLEAN PtrType
938 )
939 {
940 UINTN TokenNumber;
941
942 TokenNumber = GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber);
943
944 InvokeCallbackOnSet ((UINT32) ExTokenNumber, Guid, TokenNumber, Data, *SetSize);
945
946 return SetWorker (TokenNumber, Data, SetSize, PtrType);
947
948 }
949
950 /**
951 Set value for HII-type PCD.
952
953 A HII-type PCD's value is stored in a variable. Setting/Getting the value of
954 HII-type PCD is to visit this variable.
955
956 @param VariableGuid Guid of variable which stored value of a HII-type PCD.
957 @param VariableName Unicode name of variable which stored value of a HII-type PCD.
958 @param Data Value want to be set.
959 @param DataSize Size of value
960 @param Offset Value offset of HII-type PCD in variable.
961
962 @return status of GetVariable()/SetVariable().
963
964 **/
965 EFI_STATUS
966 SetHiiVariable (
967 IN EFI_GUID *VariableGuid,
968 IN UINT16 *VariableName,
969 IN CONST VOID *Data,
970 IN UINTN DataSize,
971 IN UINTN Offset
972 )
973 {
974 UINTN Size;
975 VOID *Buffer;
976 EFI_STATUS Status;
977 UINT32 Attribute;
978 UINTN SetSize;
979
980 Size = 0;
981 SetSize = 0;
982
983 //
984 // Try to get original variable size information.
985 //
986 Status = gRT->GetVariable (
987 (UINT16 *)VariableName,
988 VariableGuid,
989 NULL,
990 &Size,
991 NULL
992 );
993
994 if (Status == EFI_BUFFER_TOO_SMALL) {
995 //
996 // Patch new PCD's value to offset in given HII variable.
997 //
998 if (Size >= (DataSize + Offset)) {
999 SetSize = Size;
1000 } else {
1001 SetSize = DataSize + Offset;
1002 }
1003 Buffer = AllocatePool (SetSize);
1004 ASSERT (Buffer != NULL);
1005
1006 Status = gRT->GetVariable (
1007 VariableName,
1008 VariableGuid,
1009 &Attribute,
1010 &Size,
1011 Buffer
1012 );
1013
1014 ASSERT_EFI_ERROR (Status);
1015
1016 CopyMem ((UINT8 *)Buffer + Offset, Data, DataSize);
1017
1018 Status = gRT->SetVariable (
1019 VariableName,
1020 VariableGuid,
1021 Attribute,
1022 SetSize,
1023 Buffer
1024 );
1025
1026 FreePool (Buffer);
1027 return Status;
1028 } else if (Status == EFI_NOT_FOUND) {
1029 //
1030 // If variable does not exist, a new variable need to be created.
1031 //
1032
1033 Size = Offset + DataSize;
1034
1035 Buffer = AllocateZeroPool (Size);
1036 ASSERT (Buffer != NULL);
1037
1038 CopyMem ((UINT8 *)Buffer + Offset, Data, DataSize);
1039
1040 Status = gRT->SetVariable (
1041 VariableName,
1042 VariableGuid,
1043 EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
1044 Size,
1045 Buffer
1046 );
1047
1048 FreePool (Buffer);
1049 return Status;
1050 }
1051
1052 //
1053 // If we drop to here, the value is failed to be written in to variable area
1054 // So, we will save the data in the PCD Database's volatile area.
1055 //
1056 return Status;
1057 }
1058
1059 /**
1060 Get local token number according to dynamic-ex PCD's {token space guid:token number}
1061
1062 A dynamic-ex type PCD, developer must provide pair of token space guid: token number
1063 in DEC file. PCD database maintain a mapping table that translate pair of {token
1064 space guid: token number} to local token number.
1065
1066 @param Guid Token space guid for dynamic-ex PCD entry.
1067 @param ExTokenNumber Dynamic-ex PCD token number.
1068
1069 @return local token number for dynamic-ex PCD.
1070
1071 **/
1072 UINTN
1073 GetExPcdTokenNumber (
1074 IN CONST EFI_GUID *Guid,
1075 IN UINT32 ExTokenNumber
1076 )
1077 {
1078 UINT32 Index;
1079 DYNAMICEX_MAPPING *ExMap;
1080 EFI_GUID *GuidTable;
1081 EFI_GUID *MatchGuid;
1082 UINTN MatchGuidIdx;
1083
1084 if (!PEI_DATABASE_EMPTY) {
1085 ExMap = mPcdDatabase->PeiDb.Init.ExMapTable;
1086 GuidTable = mPcdDatabase->PeiDb.Init.GuidTable;
1087
1088 MatchGuid = ScanGuid (GuidTable, sizeof(mPcdDatabase->PeiDb.Init.GuidTable), Guid);
1089
1090 if (MatchGuid != NULL) {
1091
1092 MatchGuidIdx = MatchGuid - GuidTable;
1093
1094 for (Index = 0; Index < PEI_EXMAPPING_TABLE_SIZE; Index++) {
1095 if ((ExTokenNumber == ExMap[Index].ExTokenNumber) &&
1096 (MatchGuidIdx == ExMap[Index].ExGuidIndex)) {
1097 return ExMap[Index].LocalTokenNumber;
1098 }
1099 }
1100 }
1101 }
1102
1103 ExMap = mPcdDatabase->DxeDb.Init.ExMapTable;
1104 GuidTable = mPcdDatabase->DxeDb.Init.GuidTable;
1105
1106 MatchGuid = ScanGuid (GuidTable, sizeof(mPcdDatabase->DxeDb.Init.GuidTable), Guid);
1107 //
1108 // We need to ASSERT here. If GUID can't be found in GuidTable, this is a
1109 // error in the BUILD system.
1110 //
1111 ASSERT (MatchGuid != NULL);
1112
1113 MatchGuidIdx = MatchGuid - GuidTable;
1114
1115 for (Index = 0; Index < DXE_EXMAPPING_TABLE_SIZE; Index++) {
1116 if ((ExTokenNumber == ExMap[Index].ExTokenNumber) &&
1117 (MatchGuidIdx == ExMap[Index].ExGuidIndex)) {
1118 return ExMap[Index].LocalTokenNumber;
1119 }
1120 }
1121
1122 ASSERT (FALSE);
1123
1124 return 0;
1125 }
1126
1127 /**
1128 Get SKU ID table from PCD database.
1129
1130 @param LocalTokenNumberTableIdx Index of local token number in token number table.
1131 @param IsPeiPcd If TRUE,
1132
1133 @return Pointer to SKU ID array table
1134
1135 **/
1136 SKU_ID *
1137 GetSkuIdArray (
1138 IN UINTN LocalTokenNumberTableIdx,
1139 IN BOOLEAN IsPeiPcd
1140 )
1141 {
1142 SKU_HEAD *SkuHead;
1143 UINTN LocalTokenNumber;
1144 UINT8 *Database;
1145
1146 if (IsPeiPcd) {
1147 LocalTokenNumber = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable[LocalTokenNumberTableIdx];
1148 Database = (UINT8 *) &mPcdDatabase->PeiDb;
1149 } else {
1150 LocalTokenNumber = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable[LocalTokenNumberTableIdx - PEI_LOCAL_TOKEN_NUMBER];
1151 Database = (UINT8 *) &mPcdDatabase->DxeDb;
1152 }
1153
1154 ASSERT ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) != 0);
1155
1156 SkuHead = (SKU_HEAD *) ((UINT8 *)Database + (LocalTokenNumber & PCD_DATABASE_OFFSET_MASK));
1157
1158 return (SKU_ID *) (Database + SkuHead->SkuIdTableOffset);
1159
1160 }
1161
1162 /**
1163 Wrapper function of getting index of PCD entry in size table.
1164
1165 @param LocalTokenNumberTableIdx Index of this PCD in local token number table.
1166 @param IsPeiDb If TRUE, the pcd entry is initialized in PEI phase,
1167 If FALSE, the pcd entry is initialized in DXE phase.
1168
1169 @return index of PCD entry in size table.
1170 **/
1171 UINTN
1172 GetSizeTableIndex (
1173 IN UINTN LocalTokenNumberTableIdx,
1174 IN BOOLEAN IsPeiDb
1175 )
1176 {
1177 UINT32 *LocalTokenNumberTable;
1178 UINTN LocalTokenNumber;
1179 UINTN Index;
1180 UINTN SizeTableIdx;
1181 SKU_ID *SkuIdTable;
1182
1183 if (IsPeiDb) {
1184 LocalTokenNumberTable = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable;
1185 } else {
1186 LocalTokenNumberTable = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
1187 }
1188
1189 SizeTableIdx = 0;
1190
1191 for (Index = 0; Index < LocalTokenNumberTableIdx; Index ++) {
1192 LocalTokenNumber = LocalTokenNumberTable[Index];
1193
1194 if ((LocalTokenNumber & PCD_DATUM_TYPE_ALL_SET) == PCD_DATUM_TYPE_POINTER) {
1195 //
1196 // SizeTable only contain record for PCD_DATUM_TYPE_POINTER type
1197 // PCD entry.
1198 //
1199 if ((LocalTokenNumber & PCD_TYPE_VPD) != 0) {
1200 //
1201 // We have only one entry for VPD enabled PCD entry:
1202 // 1) MAX Size.
1203 // We consider current size is equal to MAX size.
1204 //
1205 SizeTableIdx++;
1206 } else {
1207 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
1208 //
1209 // We have only two entry for Non-Sku enabled PCD entry:
1210 // 1) MAX SIZE
1211 // 2) Current Size
1212 //
1213 SizeTableIdx += 2;
1214 } else {
1215 //
1216 // We have these entry for SKU enabled PCD entry
1217 // 1) MAX SIZE
1218 // 2) Current Size for each SKU_ID (It is equal to MaxSku).
1219 //
1220 SkuIdTable = GetSkuIdArray (Index, IsPeiDb);
1221 SizeTableIdx += (UINTN)*SkuIdTable + 1;
1222 }
1223 }
1224 }
1225
1226 }
1227
1228 return SizeTableIdx;
1229 }
1230
1231 /**
1232 Get size of POINTER type PCD value.
1233
1234 @param LocalTokenNumberTableIdx Index of local token number in local token number table.
1235 @param MaxSize Maxmium size of POINTER type PCD value.
1236
1237 @return size of POINTER type PCD value.
1238
1239 **/
1240 UINTN
1241 GetPtrTypeSize (
1242 IN UINTN LocalTokenNumberTableIdx,
1243 OUT UINTN *MaxSize
1244 )
1245 {
1246 INTN SizeTableIdx;
1247 UINTN LocalTokenNumber;
1248 SKU_ID *SkuIdTable;
1249 SIZE_INFO *SizeTable;
1250 UINTN Index;
1251 BOOLEAN IsPeiDb;
1252 UINT32 *LocalTokenNumberTable;
1253
1254 // EBC compiler is very choosy. It may report warning about comparison
1255 // between UINTN and 0 . So we add 1 in each size of the
1256 // comparison.
1257 IsPeiDb = (BOOLEAN) (LocalTokenNumberTableIdx + 1 < PEI_LOCAL_TOKEN_NUMBER + 1);
1258
1259
1260 if (IsPeiDb) {
1261 LocalTokenNumberTable = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable;
1262 SizeTable = mPcdDatabase->PeiDb.Init.SizeTable;
1263 } else {
1264 LocalTokenNumberTableIdx -= PEI_LOCAL_TOKEN_NUMBER;
1265 LocalTokenNumberTable = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
1266 SizeTable = mPcdDatabase->DxeDb.Init.SizeTable;
1267 }
1268
1269 LocalTokenNumber = LocalTokenNumberTable[LocalTokenNumberTableIdx];
1270
1271 ASSERT ((LocalTokenNumber & PCD_DATUM_TYPE_ALL_SET) == PCD_DATUM_TYPE_POINTER);
1272
1273 SizeTableIdx = GetSizeTableIndex (LocalTokenNumberTableIdx, IsPeiDb);
1274
1275 *MaxSize = SizeTable[SizeTableIdx];
1276 //
1277 // SizeTable only contain record for PCD_DATUM_TYPE_POINTER type
1278 // PCD entry.
1279 //
1280 if ((LocalTokenNumber & PCD_TYPE_VPD) != 0) {
1281 //
1282 // We have only one entry for VPD enabled PCD entry:
1283 // 1) MAX Size.
1284 // We consider current size is equal to MAX size.
1285 //
1286 return *MaxSize;
1287 } else {
1288 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
1289 //
1290 // We have only two entry for Non-Sku enabled PCD entry:
1291 // 1) MAX SIZE
1292 // 2) Current Size
1293 //
1294 return SizeTable[SizeTableIdx + 1];
1295 } else {
1296 //
1297 // We have these entry for SKU enabled PCD entry
1298 // 1) MAX SIZE
1299 // 2) Current Size for each SKU_ID (It is equal to MaxSku).
1300 //
1301 SkuIdTable = GetSkuIdArray (LocalTokenNumberTableIdx, IsPeiDb);
1302 for (Index = 0; Index < SkuIdTable[0]; Index++) {
1303 if (SkuIdTable[1 + Index] == mPcdDatabase->PeiDb.Init.SystemSkuId) {
1304 return SizeTable[SizeTableIdx + 1 + Index];
1305 }
1306 }
1307 return SizeTable[SizeTableIdx + 1];
1308 }
1309 }
1310 }
1311
1312 /**
1313 Set size of POINTER type PCD value. The size should not exceed the maximum size
1314 of this PCD value.
1315
1316 @param LocalTokenNumberTableIdx Index of local token number in local token number table.
1317 @param CurrentSize Size of POINTER type PCD value.
1318
1319 @retval TRUE Success to set size of PCD value.
1320 @retval FALSE Fail to set size of PCD value.
1321 **/
1322 BOOLEAN
1323 SetPtrTypeSize (
1324 IN UINTN LocalTokenNumberTableIdx,
1325 IN OUT UINTN *CurrentSize
1326 )
1327 {
1328 INTN SizeTableIdx;
1329 UINTN LocalTokenNumber;
1330 SKU_ID *SkuIdTable;
1331 SIZE_INFO *SizeTable;
1332 UINTN Index;
1333 UINTN MaxSize;
1334 BOOLEAN IsPeiDb;
1335 UINT32 *LocalTokenNumberTable;
1336
1337 //
1338 // EBC compiler is very choosy. It may report warning about comparison
1339 // between UINTN and 0 . So we add 1 in each size of the
1340 // comparison.
1341 //
1342 IsPeiDb = (BOOLEAN) (LocalTokenNumberTableIdx + 1 < PEI_LOCAL_TOKEN_NUMBER + 1);
1343
1344 if (IsPeiDb) {
1345 LocalTokenNumberTable = mPcdDatabase->PeiDb.Init.LocalTokenNumberTable;
1346 SizeTable = mPcdDatabase->PeiDb.Init.SizeTable;
1347 } else {
1348 LocalTokenNumberTableIdx -= PEI_LOCAL_TOKEN_NUMBER;
1349 LocalTokenNumberTable = mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
1350 SizeTable = mPcdDatabase->DxeDb.Init.SizeTable;
1351 }
1352
1353 LocalTokenNumber = LocalTokenNumberTable[LocalTokenNumberTableIdx];
1354
1355 ASSERT ((LocalTokenNumber & PCD_DATUM_TYPE_ALL_SET) == PCD_DATUM_TYPE_POINTER);
1356
1357 SizeTableIdx = GetSizeTableIndex (LocalTokenNumberTableIdx, IsPeiDb);
1358
1359 MaxSize = SizeTable[SizeTableIdx];
1360 //
1361 // SizeTable only contain record for PCD_DATUM_TYPE_POINTER type
1362 // PCD entry.
1363 //
1364 if ((LocalTokenNumber & PCD_TYPE_VPD) != 0) {
1365 //
1366 // We shouldn't come here as we don't support SET for VPD
1367 //
1368 ASSERT (FALSE);
1369 return FALSE;
1370 } else {
1371 if ((*CurrentSize > MaxSize) ||
1372 (*CurrentSize == MAX_ADDRESS)) {
1373 *CurrentSize = MaxSize;
1374 return FALSE;
1375 }
1376
1377 if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
1378 //
1379 // We have only two entry for Non-Sku enabled PCD entry:
1380 // 1) MAX SIZE
1381 // 2) Current Size
1382 //
1383 SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
1384 return TRUE;
1385 } else {
1386 //
1387 // We have these entry for SKU enabled PCD entry
1388 // 1) MAX SIZE
1389 // 2) Current Size for each SKU_ID (It is equal to MaxSku).
1390 //
1391 SkuIdTable = GetSkuIdArray (LocalTokenNumberTableIdx, IsPeiDb);
1392 for (Index = 0; Index < SkuIdTable[0]; Index++) {
1393 if (SkuIdTable[1 + Index] == mPcdDatabase->PeiDb.Init.SystemSkuId) {
1394 SizeTable[SizeTableIdx + 1 + Index] = (SIZE_INFO) *CurrentSize;
1395 return TRUE;
1396 }
1397 }
1398 SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
1399 return TRUE;
1400 }
1401 }
1402 }
EFI Development Kit II mirror for PVE