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[mirror_edk2.git] / MdeModulePkg / Universal / SetupBrowserDxe / IfrParse.c
1 /** @file
2 Parser for IFR binary encoding.
3
4 Copyright (c) 2007 - 2009, 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 "Setup.h"
16
17 UINT16 mStatementIndex;
18 UINT16 mExpressionOpCodeIndex;
19
20 BOOLEAN mInScopeSubtitle;
21 BOOLEAN mInScopeSuppress;
22 BOOLEAN mInScopeGrayOut;
23 BOOLEAN mInScopeDisable;
24 FORM_EXPRESSION *mSuppressExpression;
25 FORM_EXPRESSION *mGrayOutExpression;
26 FORM_EXPRESSION *mDisableExpression;
27
28 /**
29 Initialize Statement header members.
30
31 @param OpCodeData Pointer of the raw OpCode data.
32 @param FormSet Pointer of the current FormSe.
33 @param Form Pointer of the current Form.
34
35 @return The Statement.
36
37 **/
38 FORM_BROWSER_STATEMENT *
39 CreateStatement (
40 IN UINT8 *OpCodeData,
41 IN OUT FORM_BROWSER_FORMSET *FormSet,
42 IN OUT FORM_BROWSER_FORM *Form
43 )
44 {
45 FORM_BROWSER_STATEMENT *Statement;
46 EFI_IFR_STATEMENT_HEADER *StatementHdr;
47
48 if (Form == NULL) {
49 //
50 // We are currently not in a Form Scope, so just skip this Statement
51 //
52 return NULL;
53 }
54
55 Statement = &FormSet->StatementBuffer[mStatementIndex];
56 mStatementIndex++;
57
58 InitializeListHead (&Statement->DefaultListHead);
59 InitializeListHead (&Statement->OptionListHead);
60 InitializeListHead (&Statement->InconsistentListHead);
61 InitializeListHead (&Statement->NoSubmitListHead);
62
63 Statement->Signature = FORM_BROWSER_STATEMENT_SIGNATURE;
64
65 Statement->Operand = ((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode;
66
67 StatementHdr = (EFI_IFR_STATEMENT_HEADER *) (OpCodeData + sizeof (EFI_IFR_OP_HEADER));
68 CopyMem (&Statement->Prompt, &StatementHdr->Prompt, sizeof (EFI_STRING_ID));
69 CopyMem (&Statement->Help, &StatementHdr->Help, sizeof (EFI_STRING_ID));
70
71 if (mInScopeSuppress) {
72 Statement->SuppressExpression = mSuppressExpression;
73 }
74
75 if (mInScopeGrayOut) {
76 Statement->GrayOutExpression = mGrayOutExpression;
77 }
78
79
80 if (mInScopeDisable) {
81 Statement->DisableExpression = mDisableExpression;
82 }
83
84 Statement->InSubtitle = mInScopeSubtitle;
85
86 //
87 // Insert this Statement into current Form
88 //
89 InsertTailList (&Form->StatementListHead, &Statement->Link);
90
91 return Statement;
92 }
93
94 /**
95 Convert a numeric value to a Unicode String and insert it to String Package.
96 This string is used as the Unicode Name for the EFI Variable. This is to support
97 the deprecated vareqval opcode.
98
99 @param FormSet The FormSet.
100 @param Statement The numeric question whose VarStoreInfo.VarName is the
101 numeric value which is used to produce the Unicode Name
102 for the EFI Variable.
103
104 If the Statement is NULL, the ASSERT.
105 If the opcode is not Numeric, then ASSERT.
106
107 @retval EFI_SUCCESS The funtion always succeeds.
108 **/
109 EFI_STATUS
110 UpdateCheckBoxStringToken (
111 IN CONST FORM_BROWSER_FORMSET *FormSet,
112 IN FORM_BROWSER_STATEMENT *Statement
113 )
114 {
115 CHAR16 Str[MAXIMUM_VALUE_CHARACTERS];
116 EFI_STRING_ID Id;
117
118 ASSERT (Statement != NULL);
119 ASSERT (Statement->Operand == EFI_IFR_NUMERIC_OP);
120
121 UnicodeValueToString (Str, 0, Statement->VarStoreInfo.VarName, MAXIMUM_VALUE_CHARACTERS - 1);
122
123 Id = HiiSetString (FormSet->HiiHandle, 0, Str, NULL);
124 if (Id == 0) {
125 return EFI_OUT_OF_RESOURCES;
126 }
127
128 Statement->VarStoreInfo.VarName = Id;
129
130 return EFI_SUCCESS;
131 }
132
133 /**
134 Check if the next opcode is the EFI_IFR_EXTEND_OP_VAREQNAME.
135
136 @param OpCodeData The current opcode.
137
138 @retval TRUE Yes.
139 @retval FALSE No.
140 **/
141 BOOLEAN
142 IsNextOpCodeGuidedVarEqName (
143 IN UINT8 *OpCodeData
144 )
145 {
146 //
147 // Get next opcode
148 //
149 OpCodeData += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
150 if (*OpCodeData == EFI_IFR_GUID_OP) {
151 if (CompareGuid (&gEfiIfrFrameworkGuid, (EFI_GUID *)(OpCodeData + sizeof (EFI_IFR_OP_HEADER)))) {
152 //
153 // Specific GUIDed opcodes to support IFR generated from Framework HII VFR
154 //
155 if ((((EFI_IFR_GUID_VAREQNAME *) OpCodeData)->ExtendOpCode) == EFI_IFR_EXTEND_OP_VAREQNAME) {
156 return TRUE;
157 }
158 }
159 }
160
161 return FALSE;
162 }
163
164 /**
165 Initialize Question's members.
166
167 @param OpCodeData Pointer of the raw OpCode data.
168 @param FormSet Pointer of the current FormSet.
169 @param Form Pointer of the current Form.
170
171 @return The Question.
172
173 **/
174 FORM_BROWSER_STATEMENT *
175 CreateQuestion (
176 IN UINT8 *OpCodeData,
177 IN OUT FORM_BROWSER_FORMSET *FormSet,
178 IN OUT FORM_BROWSER_FORM *Form
179 )
180 {
181 FORM_BROWSER_STATEMENT *Statement;
182 EFI_IFR_QUESTION_HEADER *QuestionHdr;
183 LIST_ENTRY *Link;
184 FORMSET_STORAGE *Storage;
185 NAME_VALUE_NODE *NameValueNode;
186 EFI_STATUS Status;
187
188 Statement = CreateStatement (OpCodeData, FormSet, Form);
189 if (Statement == NULL) {
190 return NULL;
191 }
192
193 QuestionHdr = (EFI_IFR_QUESTION_HEADER *) (OpCodeData + sizeof (EFI_IFR_OP_HEADER));
194 CopyMem (&Statement->QuestionId, &QuestionHdr->QuestionId, sizeof (EFI_QUESTION_ID));
195 CopyMem (&Statement->VarStoreId, &QuestionHdr->VarStoreId, sizeof (EFI_VARSTORE_ID));
196 CopyMem (&Statement->VarStoreInfo.VarOffset, &QuestionHdr->VarStoreInfo.VarOffset, sizeof (UINT16));
197
198 Statement->QuestionFlags = QuestionHdr->Flags;
199
200 if (Statement->VarStoreId == 0) {
201 //
202 // VarStoreId of zero indicates no variable storage
203 //
204 return Statement;
205 }
206
207 //
208 // Take a look at next OpCode to see whether it is a GUIDed opcode to support
209 // Framework Compatibility
210 //
211 if (FeaturePcdGet (PcdFrameworkCompatibilitySupport)) {
212 if ((*OpCodeData == EFI_IFR_NUMERIC_OP) && IsNextOpCodeGuidedVarEqName (OpCodeData)) {
213 Status = UpdateCheckBoxStringToken (FormSet, Statement);
214 if (EFI_ERROR (Status)) {
215 return NULL;
216 }
217 }
218 }
219
220 //
221 // Find Storage for this Question
222 //
223 Link = GetFirstNode (&FormSet->StorageListHead);
224 while (!IsNull (&FormSet->StorageListHead, Link)) {
225 Storage = FORMSET_STORAGE_FROM_LINK (Link);
226
227 if (Storage->VarStoreId == Statement->VarStoreId) {
228 Statement->Storage = Storage;
229 break;
230 }
231
232 Link = GetNextNode (&FormSet->StorageListHead, Link);
233 }
234 ASSERT (Statement->Storage != NULL);
235
236 //
237 // Initialilze varname for Name/Value or EFI Variable
238 //
239 if ((Statement->Storage->Type == EFI_HII_VARSTORE_NAME_VALUE) ||
240 (Statement->Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE)) {
241 Statement->VariableName = GetToken (Statement->VarStoreInfo.VarName, FormSet->HiiHandle);
242 ASSERT (Statement->VariableName != NULL);
243
244 if (Statement->Storage->Type == EFI_HII_VARSTORE_NAME_VALUE) {
245 //
246 // Insert to Name/Value varstore list
247 //
248 NameValueNode = AllocateZeroPool (sizeof (NAME_VALUE_NODE));
249 ASSERT (NameValueNode != NULL);
250 NameValueNode->Signature = NAME_VALUE_NODE_SIGNATURE;
251 NameValueNode->Name = AllocateCopyPool (StrSize (Statement->VariableName), Statement->VariableName);
252 ASSERT (NameValueNode->Name != NULL);
253 NameValueNode->Value = AllocateZeroPool (0x10);
254 ASSERT (NameValueNode->Value != NULL);
255 NameValueNode->EditValue = AllocateZeroPool (0x10);
256 ASSERT (NameValueNode->EditValue != NULL);
257
258 InsertTailList (&Statement->Storage->NameValueListHead, &NameValueNode->Link);
259 }
260 }
261
262 return Statement;
263 }
264
265
266 /**
267 Allocate a FORM_EXPRESSION node.
268
269 @param Form The Form associated with this Expression
270
271 @return Pointer to a FORM_EXPRESSION data structure.
272
273 **/
274 FORM_EXPRESSION *
275 CreateExpression (
276 IN OUT FORM_BROWSER_FORM *Form
277 )
278 {
279 FORM_EXPRESSION *Expression;
280
281 Expression = AllocateZeroPool (sizeof (FORM_EXPRESSION));
282 ASSERT (Expression != NULL);
283 Expression->Signature = FORM_EXPRESSION_SIGNATURE;
284 InitializeListHead (&Expression->OpCodeListHead);
285
286 return Expression;
287 }
288
289
290 /**
291 Allocate a FORMSET_STORAGE data structure and insert to FormSet Storage List.
292
293 @param FormSet Pointer of the current FormSet
294
295 @return Pointer to a FORMSET_STORAGE data structure.
296
297 **/
298 FORMSET_STORAGE *
299 CreateStorage (
300 IN FORM_BROWSER_FORMSET *FormSet
301 )
302 {
303 FORMSET_STORAGE *Storage;
304
305 Storage = AllocateZeroPool (sizeof (FORMSET_STORAGE));
306 ASSERT (Storage != NULL);
307 Storage->Signature = FORMSET_STORAGE_SIGNATURE;
308 InitializeListHead (&Storage->NameValueListHead);
309 InsertTailList (&FormSet->StorageListHead, &Storage->Link);
310
311 return Storage;
312 }
313
314
315 /**
316 Create ConfigHdr string for a storage.
317
318 @param FormSet Pointer of the current FormSet
319 @param Storage Pointer of the storage
320
321 @retval EFI_SUCCESS Initialize ConfigHdr success
322
323 **/
324 EFI_STATUS
325 InitializeConfigHdr (
326 IN FORM_BROWSER_FORMSET *FormSet,
327 IN OUT FORMSET_STORAGE *Storage
328 )
329 {
330 CHAR16 *Name;
331
332 if (Storage->Type == EFI_HII_VARSTORE_BUFFER) {
333 Name = Storage->Name;
334 } else {
335 Name = NULL;
336 }
337
338 Storage->ConfigHdr = HiiConstructConfigHdr (
339 &Storage->Guid,
340 Name,
341 FormSet->DriverHandle
342 );
343
344 if (Storage->ConfigHdr == NULL) {
345 return EFI_NOT_FOUND;
346 }
347
348 Storage->ConfigRequest = AllocateCopyPool (StrSize (Storage->ConfigHdr), Storage->ConfigHdr);
349 Storage->SpareStrLen = 0;
350
351 return EFI_SUCCESS;
352 }
353
354
355 /**
356 Initialize Request Element of a Question. <RequestElement> ::= '&'<BlockName> | '&'<Label>
357
358 @param FormSet Pointer of the current FormSet.
359 @param Question The Question to be initialized.
360
361 @retval EFI_SUCCESS Function success.
362 @retval EFI_INVALID_PARAMETER No storage associated with the Question.
363
364 **/
365 EFI_STATUS
366 InitializeRequestElement (
367 IN OUT FORM_BROWSER_FORMSET *FormSet,
368 IN OUT FORM_BROWSER_STATEMENT *Question
369 )
370 {
371 FORMSET_STORAGE *Storage;
372 UINTN StrLen;
373 UINTN StringSize;
374 CHAR16 *NewStr;
375 CHAR16 RequestElement[30];
376
377 Storage = Question->Storage;
378 if (Storage == NULL) {
379 return EFI_INVALID_PARAMETER;
380 }
381
382 if (Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
383 //
384 // <ConfigRequest> is unnecessary for EFI variable storage,
385 // GetVariable()/SetVariable() will be used to retrieve/save values
386 //
387 return EFI_SUCCESS;
388 }
389
390 //
391 // Prepare <RequestElement>
392 //
393 if (Storage->Type == EFI_HII_VARSTORE_BUFFER) {
394 StrLen = UnicodeSPrint (
395 RequestElement,
396 30 * sizeof (CHAR16),
397 L"&OFFSET=%x&WIDTH=%x",
398 Question->VarStoreInfo.VarOffset,
399 Question->StorageWidth
400 );
401 Question->BlockName = AllocateCopyPool ((StrLen + 1) * sizeof (CHAR16), RequestElement);
402 } else {
403 StrLen = UnicodeSPrint (RequestElement, 30 * sizeof (CHAR16), L"&%s", Question->VariableName);
404 }
405
406 if ((Question->Operand == EFI_IFR_PASSWORD_OP) && ((Question->QuestionFlags & EFI_IFR_FLAG_CALLBACK) == EFI_IFR_FLAG_CALLBACK)) {
407 //
408 // Password with CALLBACK flag is stored in encoded format,
409 // so don't need to append it to <ConfigRequest>
410 //
411 return EFI_SUCCESS;
412 }
413
414 //
415 // Append <RequestElement> to <ConfigRequest>
416 //
417 if (StrLen > Storage->SpareStrLen) {
418 //
419 // Old String buffer is not sufficient for RequestElement, allocate a new one
420 //
421 StringSize = (Storage->ConfigRequest != NULL) ? StrSize (Storage->ConfigRequest) : sizeof (CHAR16);
422 NewStr = AllocateZeroPool (StringSize + CONFIG_REQUEST_STRING_INCREMENTAL * sizeof (CHAR16));
423 ASSERT (NewStr != NULL);
424 if (Storage->ConfigRequest != NULL) {
425 CopyMem (NewStr, Storage->ConfigRequest, StringSize);
426 FreePool (Storage->ConfigRequest);
427 }
428 Storage->ConfigRequest = NewStr;
429 Storage->SpareStrLen = CONFIG_REQUEST_STRING_INCREMENTAL;
430 }
431
432 StrCat (Storage->ConfigRequest, RequestElement);
433 Storage->ElementCount++;
434 Storage->SpareStrLen -= StrLen;
435
436 return EFI_SUCCESS;
437 }
438
439
440 /**
441 Free resources of a Expression.
442
443 @param FormSet Pointer of the Expression
444
445 **/
446 VOID
447 DestroyExpression (
448 IN FORM_EXPRESSION *Expression
449 )
450 {
451 LIST_ENTRY *Link;
452 EXPRESSION_OPCODE *OpCode;
453
454 while (!IsListEmpty (&Expression->OpCodeListHead)) {
455 Link = GetFirstNode (&Expression->OpCodeListHead);
456 OpCode = EXPRESSION_OPCODE_FROM_LINK (Link);
457 RemoveEntryList (&OpCode->Link);
458
459 if (OpCode->ValueList != NULL) {
460 FreePool (OpCode->ValueList);
461 }
462 }
463
464 //
465 // Free this Expression
466 //
467 FreePool (Expression);
468 }
469
470
471 /**
472 Free resources of a storage.
473
474 @param Storage Pointer of the storage
475
476 **/
477 VOID
478 DestroyStorage (
479 IN FORMSET_STORAGE *Storage
480 )
481 {
482 LIST_ENTRY *Link;
483 NAME_VALUE_NODE *NameValueNode;
484
485 if (Storage == NULL) {
486 return;
487 }
488
489 if (Storage->Name != NULL) {
490 FreePool (Storage->Name);
491 }
492 if (Storage->Buffer != NULL) {
493 FreePool (Storage->Buffer);
494 }
495 if (Storage->EditBuffer != NULL) {
496 FreePool (Storage->EditBuffer);
497 }
498
499 while (!IsListEmpty (&Storage->NameValueListHead)) {
500 Link = GetFirstNode (&Storage->NameValueListHead);
501 NameValueNode = NAME_VALUE_NODE_FROM_LINK (Link);
502 RemoveEntryList (&NameValueNode->Link);
503
504 if (NameValueNode->Name != NULL) {
505 FreePool (NameValueNode->Name);
506 }
507 if (NameValueNode->Value != NULL) {
508 FreePool (NameValueNode->Value);
509 }
510 if (NameValueNode->EditValue != NULL) {
511 FreePool (NameValueNode->EditValue);
512 }
513 FreePool (NameValueNode);
514 }
515
516 if (Storage->ConfigHdr != NULL) {
517 FreePool (Storage->ConfigHdr);
518 }
519 if (Storage->ConfigRequest != NULL) {
520 FreePool (Storage->ConfigRequest);
521 }
522
523 FreePool (Storage);
524 }
525
526
527 /**
528 Free resources of a Statement.
529
530 @param Statement Pointer of the Statement
531
532 **/
533 VOID
534 DestroyStatement (
535 IN OUT FORM_BROWSER_STATEMENT *Statement
536 )
537 {
538 LIST_ENTRY *Link;
539 QUESTION_DEFAULT *Default;
540 QUESTION_OPTION *Option;
541 FORM_EXPRESSION *Expression;
542
543 //
544 // Free Default value List
545 //
546 while (!IsListEmpty (&Statement->DefaultListHead)) {
547 Link = GetFirstNode (&Statement->DefaultListHead);
548 Default = QUESTION_DEFAULT_FROM_LINK (Link);
549 RemoveEntryList (&Default->Link);
550
551 FreePool (Default);
552 }
553
554 //
555 // Free Options List
556 //
557 while (!IsListEmpty (&Statement->OptionListHead)) {
558 Link = GetFirstNode (&Statement->OptionListHead);
559 Option = QUESTION_OPTION_FROM_LINK (Link);
560 RemoveEntryList (&Option->Link);
561
562 FreePool (Option);
563 }
564
565 //
566 // Free Inconsistent List
567 //
568 while (!IsListEmpty (&Statement->InconsistentListHead)) {
569 Link = GetFirstNode (&Statement->InconsistentListHead);
570 Expression = FORM_EXPRESSION_FROM_LINK (Link);
571 RemoveEntryList (&Expression->Link);
572
573 DestroyExpression (Expression);
574 }
575
576 //
577 // Free NoSubmit List
578 //
579 while (!IsListEmpty (&Statement->NoSubmitListHead)) {
580 Link = GetFirstNode (&Statement->NoSubmitListHead);
581 Expression = FORM_EXPRESSION_FROM_LINK (Link);
582 RemoveEntryList (&Expression->Link);
583
584 DestroyExpression (Expression);
585 }
586
587 if (Statement->VariableName != NULL) {
588 FreePool (Statement->VariableName);
589 }
590 if (Statement->BlockName != NULL) {
591 FreePool (Statement->BlockName);
592 }
593 }
594
595
596 /**
597 Free resources of a Form.
598
599 @param Form Pointer of the Form.
600
601 **/
602 VOID
603 DestroyForm (
604 IN OUT FORM_BROWSER_FORM *Form
605 )
606 {
607 LIST_ENTRY *Link;
608 FORM_EXPRESSION *Expression;
609 FORM_BROWSER_STATEMENT *Statement;
610
611 //
612 // Free Form Expressions
613 //
614 while (!IsListEmpty (&Form->ExpressionListHead)) {
615 Link = GetFirstNode (&Form->ExpressionListHead);
616 Expression = FORM_EXPRESSION_FROM_LINK (Link);
617 RemoveEntryList (&Expression->Link);
618
619 DestroyExpression (Expression);
620 }
621
622 //
623 // Free Statements/Questions
624 //
625 while (!IsListEmpty (&Form->StatementListHead)) {
626 Link = GetFirstNode (&Form->StatementListHead);
627 Statement = FORM_BROWSER_STATEMENT_FROM_LINK (Link);
628 RemoveEntryList (&Statement->Link);
629
630 DestroyStatement (Statement);
631 }
632
633 //
634 // Free this Form
635 //
636 FreePool (Form);
637 }
638
639
640 /**
641 Free resources allocated for a FormSet.
642
643 @param FormSet Pointer of the FormSet
644
645 **/
646 VOID
647 DestroyFormSet (
648 IN OUT FORM_BROWSER_FORMSET *FormSet
649 )
650 {
651 LIST_ENTRY *Link;
652 FORMSET_STORAGE *Storage;
653 FORMSET_DEFAULTSTORE *DefaultStore;
654 FORM_EXPRESSION *Expression;
655 FORM_BROWSER_FORM *Form;
656
657 if (FormSet->IfrBinaryData == NULL) {
658 //
659 // Uninitialized FormSet
660 //
661 FreePool (FormSet);
662 return;
663 }
664
665 //
666 // Free IFR binary buffer
667 //
668 FreePool (FormSet->IfrBinaryData);
669
670 //
671 // Free FormSet Storage
672 //
673 if (FormSet->StorageListHead.ForwardLink != NULL) {
674 while (!IsListEmpty (&FormSet->StorageListHead)) {
675 Link = GetFirstNode (&FormSet->StorageListHead);
676 Storage = FORMSET_STORAGE_FROM_LINK (Link);
677 RemoveEntryList (&Storage->Link);
678
679 DestroyStorage (Storage);
680 }
681 }
682
683 //
684 // Free FormSet Default Store
685 //
686 if (FormSet->DefaultStoreListHead.ForwardLink != NULL) {
687 while (!IsListEmpty (&FormSet->DefaultStoreListHead)) {
688 Link = GetFirstNode (&FormSet->DefaultStoreListHead);
689 DefaultStore = FORMSET_DEFAULTSTORE_FROM_LINK (Link);
690 RemoveEntryList (&DefaultStore->Link);
691
692 FreePool (DefaultStore);
693 }
694 }
695
696 //
697 // Free Formset Expressions
698 //
699 while (!IsListEmpty (&FormSet->ExpressionListHead)) {
700 Link = GetFirstNode (&FormSet->ExpressionListHead);
701 Expression = FORM_EXPRESSION_FROM_LINK (Link);
702 RemoveEntryList (&Expression->Link);
703
704 DestroyExpression (Expression);
705 }
706
707 //
708 // Free Forms
709 //
710 if (FormSet->FormListHead.ForwardLink != NULL) {
711 while (!IsListEmpty (&FormSet->FormListHead)) {
712 Link = GetFirstNode (&FormSet->FormListHead);
713 Form = FORM_BROWSER_FORM_FROM_LINK (Link);
714 RemoveEntryList (&Form->Link);
715
716 DestroyForm (Form);
717 }
718 }
719
720 if (FormSet->StatementBuffer != NULL) {
721 FreePool (FormSet->StatementBuffer);
722 }
723 if (FormSet->ExpressionBuffer != NULL) {
724 FreePool (FormSet->ExpressionBuffer);
725 }
726
727 FreePool (FormSet);
728 }
729
730
731 /**
732 Tell whether this Operand is an Expression OpCode or not
733
734 @param Operand Operand of an IFR OpCode.
735
736 @retval TRUE This is an Expression OpCode.
737 @retval FALSE Not an Expression OpCode.
738
739 **/
740 BOOLEAN
741 IsExpressionOpCode (
742 IN UINT8 Operand
743 )
744 {
745 if (((Operand >= EFI_IFR_EQ_ID_VAL_OP) && (Operand <= EFI_IFR_NOT_OP)) ||
746 ((Operand >= EFI_IFR_MATCH_OP) && (Operand <= EFI_IFR_SPAN_OP)) ||
747 (Operand == EFI_IFR_CATENATE_OP) ||
748 (Operand == EFI_IFR_TO_LOWER_OP) ||
749 (Operand == EFI_IFR_TO_UPPER_OP) ||
750 (Operand == EFI_IFR_VERSION_OP) ||
751 (Operand == EFI_IFR_SECURITY_OP)) {
752 return TRUE;
753 } else {
754 return FALSE;
755 }
756 }
757
758
759 /**
760 Calculate number of Statemens(Questions) and Expression OpCodes.
761
762 @param FormSet The FormSet to be counted.
763 @param NumberOfStatement Number of Statemens(Questions)
764 @param NumberOfExpression Number of Expression OpCodes
765
766 **/
767 VOID
768 CountOpCodes (
769 IN FORM_BROWSER_FORMSET *FormSet,
770 IN OUT UINT16 *NumberOfStatement,
771 IN OUT UINT16 *NumberOfExpression
772 )
773 {
774 UINT16 StatementCount;
775 UINT16 ExpressionCount;
776 UINT8 *OpCodeData;
777 UINTN Offset;
778 UINTN OpCodeLen;
779
780 Offset = 0;
781 StatementCount = 0;
782 ExpressionCount = 0;
783
784 while (Offset < FormSet->IfrBinaryLength) {
785 OpCodeData = FormSet->IfrBinaryData + Offset;
786 OpCodeLen = ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
787 Offset += OpCodeLen;
788
789 if (IsExpressionOpCode (((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode)) {
790 ExpressionCount++;
791 } else {
792 StatementCount++;
793 }
794 }
795
796 *NumberOfStatement = StatementCount;
797 *NumberOfExpression = ExpressionCount;
798 }
799
800
801
802 /**
803 Parse opcodes in the formset IFR binary.
804
805 @param FormSet Pointer of the FormSet data structure.
806
807 @retval EFI_SUCCESS Opcode parse success.
808 @retval Other Opcode parse fail.
809
810 **/
811 EFI_STATUS
812 ParseOpCodes (
813 IN FORM_BROWSER_FORMSET *FormSet
814 )
815 {
816 EFI_STATUS Status;
817 UINT16 Index;
818 FORM_BROWSER_FORM *CurrentForm;
819 FORM_BROWSER_STATEMENT *CurrentStatement;
820 EXPRESSION_OPCODE *ExpressionOpCode;
821 FORM_EXPRESSION *CurrentExpression;
822 UINT8 Operand;
823 UINT8 Scope;
824 UINTN OpCodeOffset;
825 UINTN OpCodeLength;
826 UINT8 *OpCodeData;
827 UINT8 ScopeOpCode;
828 FORMSET_STORAGE *Storage;
829 FORMSET_DEFAULTSTORE *DefaultStore;
830 QUESTION_DEFAULT *CurrentDefault;
831 QUESTION_OPTION *CurrentOption;
832 UINT8 Width;
833 CHAR8 *AsciiString;
834 UINT16 NumberOfStatement;
835 UINT16 NumberOfExpression;
836 EFI_IMAGE_ID *ImageId;
837 BOOLEAN SuppressForQuestion;
838 BOOLEAN SuppressForOption;
839 BOOLEAN InScopeOptionSuppress;
840 FORM_EXPRESSION *OptionSuppressExpression;
841 BOOLEAN InScopeFormSuppress;
842 FORM_EXPRESSION *FormSuppressExpression;
843 UINT16 DepthOfDisable;
844 BOOLEAN OpCodeDisabled;
845 BOOLEAN SingleOpCodeExpression;
846 BOOLEAN InScopeDefault;
847 EFI_HII_VALUE *Value;
848
849 mInScopeSubtitle = FALSE;
850 SuppressForQuestion = FALSE;
851 SuppressForOption = FALSE;
852 InScopeFormSuppress = FALSE;
853 mInScopeSuppress = FALSE;
854 InScopeOptionSuppress = FALSE;
855 mInScopeGrayOut = FALSE;
856 mInScopeDisable = FALSE;
857 DepthOfDisable = 0;
858 OpCodeDisabled = FALSE;
859 SingleOpCodeExpression = FALSE;
860 InScopeDefault = FALSE;
861 CurrentExpression = NULL;
862 CurrentDefault = NULL;
863 CurrentOption = NULL;
864 OptionSuppressExpression = NULL;
865 FormSuppressExpression = NULL;
866 ImageId = NULL;
867
868 //
869 // Get the number of Statements and Expressions
870 //
871 CountOpCodes (FormSet, &NumberOfStatement, &NumberOfExpression);
872
873 mStatementIndex = 0;
874 FormSet->StatementBuffer = AllocateZeroPool (NumberOfStatement * sizeof (FORM_BROWSER_STATEMENT));
875 if (FormSet->StatementBuffer == NULL) {
876 return EFI_OUT_OF_RESOURCES;
877 }
878
879 mExpressionOpCodeIndex = 0;
880 FormSet->ExpressionBuffer = AllocateZeroPool (NumberOfExpression * sizeof (EXPRESSION_OPCODE));
881 if (FormSet->ExpressionBuffer == NULL) {
882 return EFI_OUT_OF_RESOURCES;
883 }
884
885 InitializeListHead (&FormSet->StorageListHead);
886 InitializeListHead (&FormSet->DefaultStoreListHead);
887 InitializeListHead (&FormSet->FormListHead);
888
889 CurrentForm = NULL;
890 CurrentStatement = NULL;
891
892 ResetScopeStack ();
893
894 OpCodeOffset = 0;
895 while (OpCodeOffset < FormSet->IfrBinaryLength) {
896 OpCodeData = FormSet->IfrBinaryData + OpCodeOffset;
897
898 OpCodeLength = ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
899 OpCodeOffset += OpCodeLength;
900 Operand = ((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode;
901 Scope = ((EFI_IFR_OP_HEADER *) OpCodeData)->Scope;
902
903 //
904 // If scope bit set, push onto scope stack
905 //
906 if (Scope != 0) {
907 PushScope (Operand);
908 }
909
910 if (OpCodeDisabled) {
911 //
912 // DisableIf Expression is evaluated to be TRUE, try to find its end.
913 // Here only cares the EFI_IFR_DISABLE_IF and EFI_IFR_END
914 //
915 if (Operand == EFI_IFR_DISABLE_IF_OP) {
916 DepthOfDisable++;
917 } else if (Operand == EFI_IFR_END_OP) {
918 Status = PopScope (&ScopeOpCode);
919 if (EFI_ERROR (Status)) {
920 return Status;
921 }
922
923 if (ScopeOpCode == EFI_IFR_DISABLE_IF_OP) {
924 if (DepthOfDisable == 0) {
925 mInScopeDisable = FALSE;
926 OpCodeDisabled = FALSE;
927 } else {
928 DepthOfDisable--;
929 }
930 }
931 }
932 continue;
933 }
934
935 if (IsExpressionOpCode (Operand)) {
936 ExpressionOpCode = &FormSet->ExpressionBuffer[mExpressionOpCodeIndex];
937 mExpressionOpCodeIndex++;
938
939 ExpressionOpCode->Signature = EXPRESSION_OPCODE_SIGNATURE;
940 ExpressionOpCode->Operand = Operand;
941 Value = &ExpressionOpCode->Value;
942
943 switch (Operand) {
944 case EFI_IFR_EQ_ID_VAL_OP:
945 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_VAL *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
946
947 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
948 CopyMem (&Value->Value.u16, &((EFI_IFR_EQ_ID_VAL *) OpCodeData)->Value, sizeof (UINT16));
949 break;
950
951 case EFI_IFR_EQ_ID_ID_OP:
952 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_ID *) OpCodeData)->QuestionId1, sizeof (EFI_QUESTION_ID));
953 CopyMem (&ExpressionOpCode->QuestionId2, &((EFI_IFR_EQ_ID_ID *) OpCodeData)->QuestionId2, sizeof (EFI_QUESTION_ID));
954 break;
955
956 case EFI_IFR_EQ_ID_LIST_OP:
957 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_VAL_LIST *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
958 CopyMem (&ExpressionOpCode->ListLength, &((EFI_IFR_EQ_ID_VAL_LIST *) OpCodeData)->ListLength, sizeof (UINT16));
959 ExpressionOpCode->ValueList = AllocateCopyPool (ExpressionOpCode->ListLength * sizeof (UINT16), &((EFI_IFR_EQ_ID_VAL_LIST *) OpCodeData)->ValueList);
960 break;
961
962 case EFI_IFR_TO_STRING_OP:
963 case EFI_IFR_FIND_OP:
964 ExpressionOpCode->Format = (( EFI_IFR_TO_STRING *) OpCodeData)->Format;
965 break;
966
967 case EFI_IFR_STRING_REF1_OP:
968 Value->Type = EFI_IFR_TYPE_STRING;
969 CopyMem (&Value->Value.string, &(( EFI_IFR_STRING_REF1 *) OpCodeData)->StringId, sizeof (EFI_STRING_ID));
970 break;
971
972 case EFI_IFR_RULE_REF_OP:
973 ExpressionOpCode->RuleId = (( EFI_IFR_RULE_REF *) OpCodeData)->RuleId;
974 break;
975
976 case EFI_IFR_SPAN_OP:
977 ExpressionOpCode->Flags = (( EFI_IFR_SPAN *) OpCodeData)->Flags;
978 break;
979
980 case EFI_IFR_THIS_OP:
981 ASSERT (CurrentStatement != NULL);
982 ExpressionOpCode->QuestionId = CurrentStatement->QuestionId;
983 break;
984
985 case EFI_IFR_SECURITY_OP:
986 CopyMem (&ExpressionOpCode->Guid, &((EFI_IFR_SECURITY *) OpCodeData)->Permissions, sizeof (EFI_GUID));
987 break;
988
989 case EFI_IFR_QUESTION_REF1_OP:
990 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_VAL_LIST *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
991 break;
992
993 case EFI_IFR_QUESTION_REF3_OP:
994 if (OpCodeLength >= sizeof (EFI_IFR_QUESTION_REF3_2)) {
995 CopyMem (&ExpressionOpCode->DevicePath, &(( EFI_IFR_QUESTION_REF3_2 *) OpCodeData)->DevicePath, sizeof (EFI_STRING_ID));
996
997 if (OpCodeLength >= sizeof (EFI_IFR_QUESTION_REF3_3)) {
998 CopyMem (&ExpressionOpCode->Guid, &(( EFI_IFR_QUESTION_REF3_3 *) OpCodeData)->Guid, sizeof (EFI_GUID));
999 }
1000 }
1001 break;
1002
1003 //
1004 // constant
1005 //
1006 case EFI_IFR_TRUE_OP:
1007 Value->Type = EFI_IFR_TYPE_BOOLEAN;
1008 Value->Value.b = TRUE;
1009 break;
1010
1011 case EFI_IFR_FALSE_OP:
1012 Value->Type = EFI_IFR_TYPE_BOOLEAN;
1013 Value->Value.b = FALSE;
1014 break;
1015
1016 case EFI_IFR_ONE_OP:
1017 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
1018 Value->Value.u8 = 1;
1019 break;
1020
1021 case EFI_IFR_ZERO_OP:
1022 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
1023 Value->Value.u8 = 0;
1024 break;
1025
1026 case EFI_IFR_ONES_OP:
1027 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1028 Value->Value.u64 = 0xffffffffffffffffULL;
1029 break;
1030
1031 case EFI_IFR_UINT8_OP:
1032 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
1033 Value->Value.u8 = (( EFI_IFR_UINT8 *) OpCodeData)->Value;
1034 break;
1035
1036 case EFI_IFR_UINT16_OP:
1037 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
1038 CopyMem (&Value->Value.u16, &(( EFI_IFR_UINT16 *) OpCodeData)->Value, sizeof (UINT16));
1039 break;
1040
1041 case EFI_IFR_UINT32_OP:
1042 Value->Type = EFI_IFR_TYPE_NUM_SIZE_32;
1043 CopyMem (&Value->Value.u32, &(( EFI_IFR_UINT32 *) OpCodeData)->Value, sizeof (UINT32));
1044 break;
1045
1046 case EFI_IFR_UINT64_OP:
1047 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1048 CopyMem (&Value->Value.u64, &(( EFI_IFR_UINT64 *) OpCodeData)->Value, sizeof (UINT64));
1049 break;
1050
1051 case EFI_IFR_UNDEFINED_OP:
1052 Value->Type = EFI_IFR_TYPE_UNDEFINED;
1053 break;
1054
1055 case EFI_IFR_VERSION_OP:
1056 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
1057 Value->Value.u16 = EFI_IFR_SPECIFICATION_VERSION;
1058 break;
1059
1060 default:
1061 break;
1062 }
1063
1064 ASSERT (CurrentExpression != NULL);
1065 InsertTailList (&CurrentExpression->OpCodeListHead, &ExpressionOpCode->Link);
1066
1067 if (SingleOpCodeExpression) {
1068 //
1069 // There are two cases to indicate the end of an Expression:
1070 // for single OpCode expression: one Expression OpCode
1071 // for expression consists of more than one OpCode: EFI_IFR_END
1072 //
1073 SingleOpCodeExpression = FALSE;
1074
1075 if (mInScopeDisable && CurrentForm == NULL) {
1076 //
1077 // This is DisableIf expression for Form, it should be a constant expression
1078 //
1079 Status = EvaluateExpression (FormSet, CurrentForm, CurrentExpression);
1080 if (EFI_ERROR (Status)) {
1081 return Status;
1082 }
1083
1084 if (CurrentExpression->Result.Type != EFI_IFR_TYPE_BOOLEAN) {
1085 return EFI_INVALID_PARAMETER;
1086 }
1087
1088 OpCodeDisabled = CurrentExpression->Result.Value.b;
1089 }
1090
1091 CurrentExpression = NULL;
1092 }
1093
1094 continue;
1095 }
1096
1097 //
1098 // Parse the Opcode
1099 //
1100 switch (Operand) {
1101
1102 case EFI_IFR_FORM_SET_OP:
1103 //
1104 // Check the formset GUID
1105 //
1106 if (CompareMem (&FormSet->Guid, &((EFI_IFR_FORM_SET *) OpCodeData)->Guid, sizeof (EFI_GUID)) != 0) {
1107 return EFI_INVALID_PARAMETER;
1108 }
1109
1110 CopyMem (&FormSet->FormSetTitle, &((EFI_IFR_FORM_SET *) OpCodeData)->FormSetTitle, sizeof (EFI_STRING_ID));
1111 CopyMem (&FormSet->Help, &((EFI_IFR_FORM_SET *) OpCodeData)->Help, sizeof (EFI_STRING_ID));
1112
1113 //
1114 // The formset OpCode contains ClassGuid
1115 //
1116 FormSet->NumberOfClassGuid = (UINT8) (((EFI_IFR_FORM_SET *) OpCodeData)->Flags & 0x3);
1117 CopyMem (FormSet->ClassGuid, OpCodeData + sizeof (EFI_IFR_FORM_SET), FormSet->NumberOfClassGuid * sizeof (EFI_GUID));
1118
1119 InitializeListHead (&FormSet->ExpressionListHead);
1120 break;
1121
1122 case EFI_IFR_FORM_OP:
1123 //
1124 // Create a new Form for this FormSet
1125 //
1126 CurrentForm = AllocateZeroPool (sizeof (FORM_BROWSER_FORM));
1127 ASSERT (CurrentForm != NULL);
1128 CurrentForm->Signature = FORM_BROWSER_FORM_SIGNATURE;
1129 InitializeListHead (&CurrentForm->ExpressionListHead);
1130 InitializeListHead (&CurrentForm->StatementListHead);
1131
1132 CopyMem (&CurrentForm->FormId, &((EFI_IFR_FORM *) OpCodeData)->FormId, sizeof (UINT16));
1133 CopyMem (&CurrentForm->FormTitle, &((EFI_IFR_FORM *) OpCodeData)->FormTitle, sizeof (EFI_STRING_ID));
1134
1135 if (InScopeFormSuppress) {
1136 //
1137 // Form is inside of suppressif
1138 //
1139 CurrentForm->SuppressExpression = FormSuppressExpression;
1140 }
1141
1142 if (Scope != 0) {
1143 //
1144 // Enter scope of a Form, suppressif will be used for Question or Option
1145 //
1146 SuppressForQuestion = TRUE;
1147 }
1148
1149 //
1150 // Insert into Form list of this FormSet
1151 //
1152 InsertTailList (&FormSet->FormListHead, &CurrentForm->Link);
1153 break;
1154
1155 //
1156 // Storage
1157 //
1158 case EFI_IFR_VARSTORE_OP:
1159 //
1160 // Create a buffer Storage for this FormSet
1161 //
1162 Storage = CreateStorage (FormSet);
1163 Storage->Type = EFI_HII_VARSTORE_BUFFER;
1164
1165 CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
1166 CopyMem (&Storage->Guid, &((EFI_IFR_VARSTORE *) OpCodeData)->Guid, sizeof (EFI_GUID));
1167 CopyMem (&Storage->Size, &((EFI_IFR_VARSTORE *) OpCodeData)->Size, sizeof (UINT16));
1168
1169 Storage->Buffer = AllocateZeroPool (Storage->Size);
1170 Storage->EditBuffer = AllocateZeroPool (Storage->Size);
1171
1172 AsciiString = (CHAR8 *) ((EFI_IFR_VARSTORE *) OpCodeData)->Name;
1173 Storage->Name = AllocateZeroPool (AsciiStrSize (AsciiString) * 2);
1174 ASSERT (Storage->Name != NULL);
1175 for (Index = 0; AsciiString[Index] != 0; Index++) {
1176 Storage->Name[Index] = (CHAR16) AsciiString[Index];
1177 }
1178
1179 //
1180 // Initialize <ConfigHdr>
1181 //
1182 InitializeConfigHdr (FormSet, Storage);
1183 break;
1184
1185 case EFI_IFR_VARSTORE_NAME_VALUE_OP:
1186 //
1187 // Create a name/value Storage for this FormSet
1188 //
1189 Storage = CreateStorage (FormSet);
1190 Storage->Type = EFI_HII_VARSTORE_NAME_VALUE;
1191
1192 CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE_NAME_VALUE *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
1193 CopyMem (&Storage->Guid, &((EFI_IFR_VARSTORE_NAME_VALUE *) OpCodeData)->Guid, sizeof (EFI_GUID));
1194
1195 //
1196 // Initialize <ConfigHdr>
1197 //
1198 InitializeConfigHdr (FormSet, Storage);
1199 break;
1200
1201 case EFI_IFR_VARSTORE_EFI_OP:
1202 //
1203 // Create a EFI variable Storage for this FormSet
1204 //
1205 Storage = CreateStorage (FormSet);
1206 Storage->Type = EFI_HII_VARSTORE_EFI_VARIABLE;
1207
1208 CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
1209 CopyMem (&Storage->Guid, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->Guid, sizeof (EFI_GUID));
1210 CopyMem (&Storage->Attributes, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->Attributes, sizeof (UINT32));
1211 break;
1212
1213 //
1214 // DefaultStore
1215 //
1216 case EFI_IFR_DEFAULTSTORE_OP:
1217 DefaultStore = AllocateZeroPool (sizeof (FORMSET_DEFAULTSTORE));
1218 ASSERT (DefaultStore != NULL);
1219 DefaultStore->Signature = FORMSET_DEFAULTSTORE_SIGNATURE;
1220
1221 CopyMem (&DefaultStore->DefaultId, &((EFI_IFR_DEFAULTSTORE *) OpCodeData)->DefaultId, sizeof (UINT16));
1222 CopyMem (&DefaultStore->DefaultName, &((EFI_IFR_DEFAULTSTORE *) OpCodeData)->DefaultName, sizeof (EFI_STRING_ID));
1223
1224 //
1225 // Insert to DefaultStore list of this Formset
1226 //
1227 InsertTailList (&FormSet->DefaultStoreListHead, &DefaultStore->Link);
1228 break;
1229
1230 //
1231 // Statements
1232 //
1233 case EFI_IFR_SUBTITLE_OP:
1234 CurrentStatement = CreateStatement (OpCodeData, FormSet, CurrentForm);
1235 ASSERT (CurrentStatement != NULL);
1236
1237 CurrentStatement->Flags = ((EFI_IFR_SUBTITLE *) OpCodeData)->Flags;
1238
1239 if (Scope != 0) {
1240 mInScopeSubtitle = TRUE;
1241 }
1242 break;
1243
1244 case EFI_IFR_TEXT_OP:
1245 CurrentStatement = CreateStatement (OpCodeData, FormSet, CurrentForm);
1246 ASSERT (CurrentStatement != NULL);
1247
1248 CopyMem (&CurrentStatement->TextTwo, &((EFI_IFR_TEXT *) OpCodeData)->TextTwo, sizeof (EFI_STRING_ID));
1249 break;
1250
1251 case EFI_IFR_RESET_BUTTON_OP:
1252 CurrentStatement = CreateStatement (OpCodeData, FormSet, CurrentForm);
1253 ASSERT (CurrentStatement != NULL);
1254 CopyMem (&CurrentStatement->DefaultId, &((EFI_IFR_RESET_BUTTON *) OpCodeData)->DefaultId, sizeof (EFI_DEFAULT_ID));
1255 break;
1256
1257 //
1258 // Questions
1259 //
1260 case EFI_IFR_ACTION_OP:
1261 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1262 ASSERT (CurrentStatement != NULL);
1263 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_ACTION;
1264
1265 if (OpCodeLength == sizeof (EFI_IFR_ACTION_1)) {
1266 //
1267 // No QuestionConfig present, so no configuration string will be processed
1268 //
1269 CurrentStatement->QuestionConfig = 0;
1270 } else {
1271 CopyMem (&CurrentStatement->QuestionConfig, &((EFI_IFR_ACTION *) OpCodeData)->QuestionConfig, sizeof (EFI_STRING_ID));
1272 }
1273 break;
1274
1275 case EFI_IFR_REF_OP:
1276 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1277 ASSERT (CurrentStatement != NULL);
1278 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_UNDEFINED;
1279 CopyMem (&CurrentStatement->RefFormId, &((EFI_IFR_REF *) OpCodeData)->FormId, sizeof (EFI_FORM_ID));
1280 if (OpCodeLength >= sizeof (EFI_IFR_REF2)) {
1281 CopyMem (&CurrentStatement->RefQuestionId, &((EFI_IFR_REF2 *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
1282
1283 if (OpCodeLength >= sizeof (EFI_IFR_REF3)) {
1284 CopyMem (&CurrentStatement->RefFormSetId, &((EFI_IFR_REF3 *) OpCodeData)->FormSetId, sizeof (EFI_GUID));
1285
1286 if (OpCodeLength >= sizeof (EFI_IFR_REF4)) {
1287 CopyMem (&CurrentStatement->RefDevicePath, &((EFI_IFR_REF4 *) OpCodeData)->DevicePath, sizeof (EFI_STRING_ID));
1288 }
1289 }
1290 }
1291 break;
1292
1293 case EFI_IFR_ONE_OF_OP:
1294 case EFI_IFR_NUMERIC_OP:
1295 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1296 ASSERT(CurrentStatement != NULL);
1297
1298 CurrentStatement->Flags = ((EFI_IFR_ONE_OF *) OpCodeData)->Flags;
1299 Value = &CurrentStatement->HiiValue;
1300
1301 switch (CurrentStatement->Flags & EFI_IFR_NUMERIC_SIZE) {
1302 case EFI_IFR_NUMERIC_SIZE_1:
1303 CurrentStatement->Minimum = ((EFI_IFR_NUMERIC *) OpCodeData)->data.u8.MinValue;
1304 CurrentStatement->Maximum = ((EFI_IFR_NUMERIC *) OpCodeData)->data.u8.MaxValue;
1305 CurrentStatement->Step = ((EFI_IFR_NUMERIC *) OpCodeData)->data.u8.Step;
1306 CurrentStatement->StorageWidth = sizeof (UINT8);
1307 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
1308 break;
1309
1310 case EFI_IFR_NUMERIC_SIZE_2:
1311 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u16.MinValue, sizeof (UINT16));
1312 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u16.MaxValue, sizeof (UINT16));
1313 CopyMem (&CurrentStatement->Step, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u16.Step, sizeof (UINT16));
1314 CurrentStatement->StorageWidth = sizeof (UINT16);
1315 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
1316 break;
1317
1318 case EFI_IFR_NUMERIC_SIZE_4:
1319 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u32.MinValue, sizeof (UINT32));
1320 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u32.MaxValue, sizeof (UINT32));
1321 CopyMem (&CurrentStatement->Step, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u32.Step, sizeof (UINT32));
1322 CurrentStatement->StorageWidth = sizeof (UINT32);
1323 Value->Type = EFI_IFR_TYPE_NUM_SIZE_32;
1324 break;
1325
1326 case EFI_IFR_NUMERIC_SIZE_8:
1327 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u64.MinValue, sizeof (UINT64));
1328 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u64.MaxValue, sizeof (UINT64));
1329 CopyMem (&CurrentStatement->Step, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u64.Step, sizeof (UINT64));
1330 CurrentStatement->StorageWidth = sizeof (UINT64);
1331 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1332 break;
1333
1334 default:
1335 break;
1336 }
1337
1338 InitializeRequestElement (FormSet, CurrentStatement);
1339
1340 if ((Operand == EFI_IFR_ONE_OF_OP) && Scope != 0) {
1341 SuppressForOption = TRUE;
1342 }
1343 break;
1344
1345 case EFI_IFR_ORDERED_LIST_OP:
1346 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1347 ASSERT(CurrentStatement != NULL);
1348
1349 CurrentStatement->Flags = ((EFI_IFR_ORDERED_LIST *) OpCodeData)->Flags;
1350 CurrentStatement->MaxContainers = ((EFI_IFR_ORDERED_LIST *) OpCodeData)->MaxContainers;
1351
1352 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_BUFFER;
1353
1354 if (Scope != 0) {
1355 SuppressForOption = TRUE;
1356 }
1357 break;
1358
1359 case EFI_IFR_CHECKBOX_OP:
1360 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1361 ASSERT(CurrentStatement != NULL);
1362
1363 CurrentStatement->Flags = ((EFI_IFR_CHECKBOX *) OpCodeData)->Flags;
1364 CurrentStatement->StorageWidth = sizeof (BOOLEAN);
1365 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_BOOLEAN;
1366
1367 InitializeRequestElement (FormSet, CurrentStatement);
1368
1369 break;
1370
1371 case EFI_IFR_STRING_OP:
1372 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1373 ASSERT (CurrentStatement != NULL);
1374 //
1375 // MinSize is the minimum number of characters that can be accepted for this opcode,
1376 // MaxSize is the maximum number of characters that can be accepted for this opcode.
1377 // The characters are stored as Unicode, so the storage width should multiply 2.
1378 //
1379 CurrentStatement->Minimum = ((EFI_IFR_STRING *) OpCodeData)->MinSize;
1380 CurrentStatement->Maximum = ((EFI_IFR_STRING *) OpCodeData)->MaxSize;
1381 CurrentStatement->StorageWidth = (UINT16)((UINTN) CurrentStatement->Maximum * sizeof (CHAR16));
1382 CurrentStatement->Flags = ((EFI_IFR_STRING *) OpCodeData)->Flags;
1383
1384 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_STRING;
1385 CurrentStatement->BufferValue = AllocateZeroPool (CurrentStatement->StorageWidth + sizeof (CHAR16));
1386
1387 InitializeRequestElement (FormSet, CurrentStatement);
1388 break;
1389
1390 case EFI_IFR_PASSWORD_OP:
1391 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1392 ASSERT (CurrentStatement != NULL);
1393 //
1394 // MinSize is the minimum number of characters that can be accepted for this opcode,
1395 // MaxSize is the maximum number of characters that can be accepted for this opcode.
1396 // The characters are stored as Unicode, so the storage width should multiply 2.
1397 //
1398 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_PASSWORD *) OpCodeData)->MinSize, sizeof (UINT16));
1399 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_PASSWORD *) OpCodeData)->MaxSize, sizeof (UINT16));
1400 CurrentStatement->StorageWidth = (UINT16)((UINTN) CurrentStatement->Maximum * sizeof (CHAR16));
1401
1402 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_STRING;
1403 CurrentStatement->BufferValue = AllocateZeroPool ((CurrentStatement->StorageWidth + sizeof (CHAR16)));
1404
1405 InitializeRequestElement (FormSet, CurrentStatement);
1406 break;
1407
1408 case EFI_IFR_DATE_OP:
1409 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1410 ASSERT(CurrentStatement != NULL);
1411
1412 CurrentStatement->Flags = ((EFI_IFR_DATE *) OpCodeData)->Flags;
1413 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_DATE;
1414
1415 if ((CurrentStatement->Flags & EFI_QF_DATE_STORAGE) == QF_DATE_STORAGE_NORMAL) {
1416 CurrentStatement->StorageWidth = sizeof (EFI_HII_DATE);
1417
1418 InitializeRequestElement (FormSet, CurrentStatement);
1419 } else {
1420 //
1421 // Don't assign storage for RTC type of date/time
1422 //
1423 CurrentStatement->Storage = NULL;
1424 CurrentStatement->StorageWidth = 0;
1425 }
1426 break;
1427
1428 case EFI_IFR_TIME_OP:
1429 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1430 ASSERT(CurrentStatement != NULL);
1431
1432 CurrentStatement->Flags = ((EFI_IFR_TIME *) OpCodeData)->Flags;
1433 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_TIME;
1434
1435 if ((CurrentStatement->Flags & QF_TIME_STORAGE) == QF_TIME_STORAGE_NORMAL) {
1436 CurrentStatement->StorageWidth = sizeof (EFI_IFR_TIME);
1437
1438 InitializeRequestElement (FormSet, CurrentStatement);
1439 } else {
1440 //
1441 // Don't assign storage for RTC type of date/time
1442 //
1443 CurrentStatement->Storage = NULL;
1444 CurrentStatement->StorageWidth = 0;
1445 }
1446 break;
1447
1448 //
1449 // Default
1450 //
1451 case EFI_IFR_DEFAULT_OP:
1452 //
1453 // EFI_IFR_DEFAULT appear in scope of a Question,
1454 // It creates a default value for the current question.
1455 // A Question may have more than one Default value which have different default types.
1456 //
1457 CurrentDefault = AllocateZeroPool (sizeof (QUESTION_DEFAULT));
1458 ASSERT (CurrentDefault != NULL);
1459 CurrentDefault->Signature = QUESTION_DEFAULT_SIGNATURE;
1460
1461 CurrentDefault->Value.Type = ((EFI_IFR_DEFAULT *) OpCodeData)->Type;
1462 CopyMem (&CurrentDefault->DefaultId, &((EFI_IFR_DEFAULT *) OpCodeData)->DefaultId, sizeof (UINT16));
1463 CopyMem (&CurrentDefault->Value.Value, &((EFI_IFR_DEFAULT *) OpCodeData)->Value, sizeof (EFI_IFR_TYPE_VALUE));
1464 ExtendValueToU64 (&CurrentDefault->Value);
1465
1466 //
1467 // Insert to Default Value list of current Question
1468 //
1469 InsertTailList (&CurrentStatement->DefaultListHead, &CurrentDefault->Link);
1470
1471 if (Scope != 0) {
1472 InScopeDefault = TRUE;
1473 }
1474 break;
1475
1476 //
1477 // Option
1478 //
1479 case EFI_IFR_ONE_OF_OPTION_OP:
1480 //
1481 // EFI_IFR_ONE_OF_OPTION appear in scope of a Question.
1482 // It create a selection for use in current Question.
1483 //
1484 CurrentOption = AllocateZeroPool (sizeof (QUESTION_OPTION));
1485 ASSERT (CurrentOption != NULL);
1486 CurrentOption->Signature = QUESTION_OPTION_SIGNATURE;
1487
1488 CurrentOption->Flags = ((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Flags;
1489 CurrentOption->Value.Type = ((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Type;
1490 CopyMem (&CurrentOption->Text, &((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Option, sizeof (EFI_STRING_ID));
1491 CopyMem (&CurrentOption->Value.Value, &((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Value, sizeof (EFI_IFR_TYPE_VALUE));
1492 ExtendValueToU64 (&CurrentOption->Value);
1493
1494 if (InScopeOptionSuppress) {
1495 CurrentOption->SuppressExpression = OptionSuppressExpression;
1496 }
1497
1498 //
1499 // Insert to Option list of current Question
1500 //
1501 InsertTailList (&CurrentStatement->OptionListHead, &CurrentOption->Link);
1502
1503 //
1504 // Now we know the Storage width of nested Ordered List
1505 //
1506 if ((CurrentStatement->Operand == EFI_IFR_ORDERED_LIST_OP) && (CurrentStatement->BufferValue == NULL)) {
1507 Width = 1;
1508 switch (CurrentOption->Value.Type) {
1509 case EFI_IFR_TYPE_NUM_SIZE_8:
1510 Width = 1;
1511 break;
1512
1513 case EFI_IFR_TYPE_NUM_SIZE_16:
1514 Width = 2;
1515 break;
1516
1517 case EFI_IFR_TYPE_NUM_SIZE_32:
1518 Width = 4;
1519 break;
1520
1521 case EFI_IFR_TYPE_NUM_SIZE_64:
1522 Width = 8;
1523 break;
1524
1525 default:
1526 //
1527 // Invalid type for Ordered List
1528 //
1529 break;
1530 }
1531
1532 CurrentStatement->StorageWidth = (UINT16) (CurrentStatement->MaxContainers * Width);
1533 CurrentStatement->BufferValue = AllocateZeroPool (CurrentStatement->StorageWidth);
1534 CurrentStatement->ValueType = CurrentOption->Value.Type;
1535
1536 InitializeRequestElement (FormSet, CurrentStatement);
1537 }
1538 break;
1539
1540 //
1541 // Conditional
1542 //
1543 case EFI_IFR_NO_SUBMIT_IF_OP:
1544 case EFI_IFR_INCONSISTENT_IF_OP:
1545 //
1546 // Create an Expression node
1547 //
1548 CurrentExpression = CreateExpression (CurrentForm);
1549 CopyMem (&CurrentExpression->Error, &((EFI_IFR_INCONSISTENT_IF *) OpCodeData)->Error, sizeof (EFI_STRING_ID));
1550
1551 if (Operand == EFI_IFR_NO_SUBMIT_IF_OP) {
1552 CurrentExpression->Type = EFI_HII_EXPRESSION_NO_SUBMIT_IF;
1553 InsertTailList (&CurrentStatement->NoSubmitListHead, &CurrentExpression->Link);
1554 } else {
1555 CurrentExpression->Type = EFI_HII_EXPRESSION_INCONSISTENT_IF;
1556 InsertTailList (&CurrentStatement->InconsistentListHead, &CurrentExpression->Link);
1557 }
1558
1559 //
1560 // Take a look at next OpCode to see whether current expression consists
1561 // of single OpCode
1562 //
1563 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1564 SingleOpCodeExpression = TRUE;
1565 }
1566 break;
1567
1568 case EFI_IFR_SUPPRESS_IF_OP:
1569 //
1570 // Question and Option will appear in scope of this OpCode
1571 //
1572 CurrentExpression = CreateExpression (CurrentForm);
1573 CurrentExpression->Type = EFI_HII_EXPRESSION_SUPPRESS_IF;
1574
1575 if (CurrentForm == NULL) {
1576 InsertTailList (&FormSet->ExpressionListHead, &CurrentExpression->Link);
1577 } else {
1578 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1579 }
1580
1581 if (SuppressForOption) {
1582 InScopeOptionSuppress = TRUE;
1583 OptionSuppressExpression = CurrentExpression;
1584 } else if (SuppressForQuestion) {
1585 mInScopeSuppress = TRUE;
1586 mSuppressExpression = CurrentExpression;
1587 } else {
1588 InScopeFormSuppress = TRUE;
1589 FormSuppressExpression = CurrentExpression;
1590 }
1591
1592 //
1593 // Take a look at next OpCode to see whether current expression consists
1594 // of single OpCode
1595 //
1596 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1597 SingleOpCodeExpression = TRUE;
1598 }
1599 break;
1600
1601 case EFI_IFR_GRAY_OUT_IF_OP:
1602 //
1603 // Questions will appear in scope of this OpCode
1604 //
1605 CurrentExpression = CreateExpression (CurrentForm);
1606 CurrentExpression->Type = EFI_HII_EXPRESSION_GRAY_OUT_IF;
1607 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1608
1609 mInScopeGrayOut = TRUE;
1610 mGrayOutExpression = CurrentExpression;
1611
1612 //
1613 // Take a look at next OpCode to see whether current expression consists
1614 // of single OpCode
1615 //
1616 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1617 SingleOpCodeExpression = TRUE;
1618 }
1619 break;
1620
1621 case EFI_IFR_DISABLE_IF_OP:
1622 //
1623 // The DisableIf expression should only rely on constant, so it could be
1624 // evaluated at initialization and it will not be queued
1625 //
1626 CurrentExpression = AllocateZeroPool (sizeof (FORM_EXPRESSION));
1627 ASSERT (CurrentExpression != NULL);
1628 CurrentExpression->Signature = FORM_EXPRESSION_SIGNATURE;
1629 CurrentExpression->Type = EFI_HII_EXPRESSION_DISABLE_IF;
1630 InitializeListHead (&CurrentExpression->OpCodeListHead);
1631
1632 if (CurrentForm != NULL) {
1633 //
1634 // This is DisableIf for Question, enqueue it to Form expression list
1635 //
1636 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1637 }
1638
1639 mDisableExpression = CurrentExpression;
1640 mInScopeDisable = TRUE;
1641 OpCodeDisabled = FALSE;
1642
1643 //
1644 // Take a look at next OpCode to see whether current expression consists
1645 // of single OpCode
1646 //
1647 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1648 SingleOpCodeExpression = TRUE;
1649 }
1650 break;
1651
1652 //
1653 // Expression
1654 //
1655 case EFI_IFR_VALUE_OP:
1656 CurrentExpression = CreateExpression (CurrentForm);
1657 CurrentExpression->Type = EFI_HII_EXPRESSION_VALUE;
1658 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1659
1660 if (InScopeDefault) {
1661 //
1662 // Used for default (EFI_IFR_DEFAULT)
1663 //
1664 CurrentDefault->ValueExpression = CurrentExpression;
1665 } else {
1666 //
1667 // If used for a question, then the question will be read-only
1668 //
1669 //
1670 // Make sure CurrentStatement is not NULL.
1671 // If it is NULL, 1) ParseOpCodes functions may parse the IFR wrongly. Or 2) the IFR
1672 // file is wrongly generated by tools such as VFR Compiler. There may be a bug in VFR Compiler.
1673 //
1674 ASSERT (CurrentStatement != NULL);
1675 CurrentStatement->ValueExpression = CurrentExpression;
1676 }
1677
1678 //
1679 // Take a look at next OpCode to see whether current expression consists
1680 // of single OpCode
1681 //
1682 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1683 SingleOpCodeExpression = TRUE;
1684 }
1685 break;
1686
1687 case EFI_IFR_RULE_OP:
1688 CurrentExpression = CreateExpression (CurrentForm);
1689 CurrentExpression->Type = EFI_HII_EXPRESSION_RULE;
1690
1691 CurrentExpression->RuleId = ((EFI_IFR_RULE *) OpCodeData)->RuleId;
1692 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1693
1694 //
1695 // Take a look at next OpCode to see whether current expression consists
1696 // of single OpCode
1697 //
1698 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1699 SingleOpCodeExpression = TRUE;
1700 }
1701 break;
1702
1703 //
1704 // Image
1705 //
1706 case EFI_IFR_IMAGE_OP:
1707 //
1708 // Get ScopeOpcode from top of stack
1709 //
1710 PopScope (&ScopeOpCode);
1711 PushScope (ScopeOpCode);
1712
1713 switch (ScopeOpCode) {
1714 case EFI_IFR_FORM_SET_OP:
1715 ImageId = &FormSet->ImageId;
1716 break;
1717
1718 case EFI_IFR_FORM_OP:
1719 ASSERT (CurrentForm != NULL);
1720 ImageId = &CurrentForm->ImageId;
1721 break;
1722
1723 case EFI_IFR_ONE_OF_OPTION_OP:
1724 ImageId = &CurrentOption->ImageId;
1725 break;
1726
1727 default:
1728 //
1729 // Make sure CurrentStatement is not NULL.
1730 // If it is NULL, 1) ParseOpCodes functions may parse the IFR wrongly. Or 2) the IFR
1731 // file is wrongly generated by tools such as VFR Compiler.
1732 //
1733 ASSERT (CurrentStatement != NULL);
1734 ImageId = &CurrentStatement->ImageId;
1735 break;
1736 }
1737
1738 ASSERT (ImageId != NULL);
1739 CopyMem (ImageId, &((EFI_IFR_IMAGE *) OpCodeData)->Id, sizeof (EFI_IMAGE_ID));
1740 break;
1741
1742 //
1743 // Refresh
1744 //
1745 case EFI_IFR_REFRESH_OP:
1746 ASSERT (CurrentStatement != NULL);
1747 CurrentStatement->RefreshInterval = ((EFI_IFR_REFRESH *) OpCodeData)->RefreshInterval;
1748 break;
1749
1750 //
1751 // Vendor specific
1752 //
1753 case EFI_IFR_GUID_OP:
1754 if (CompareGuid (&gEfiIfrTianoGuid, (EFI_GUID *)(OpCodeData + sizeof (EFI_IFR_OP_HEADER)))) {
1755 //
1756 // Tiano specific GUIDed opcodes
1757 //
1758 switch (((EFI_IFR_GUID_LABEL *) OpCodeData)->ExtendOpCode) {
1759 case EFI_IFR_EXTEND_OP_LABEL:
1760 //
1761 // just ignore label
1762 //
1763 break;
1764
1765 case EFI_IFR_EXTEND_OP_BANNER:
1766 //
1767 // By SubClass to get Banner Data from Front Page
1768 //
1769 if (FormSet->SubClass == EFI_FRONT_PAGE_SUBCLASS) {
1770 CopyMem (
1771 &gBannerData->Banner[((EFI_IFR_GUID_BANNER *) OpCodeData)->LineNumber][
1772 ((EFI_IFR_GUID_BANNER *) OpCodeData)->Alignment],
1773 &((EFI_IFR_GUID_BANNER *) OpCodeData)->Title,
1774 sizeof (EFI_STRING_ID)
1775 );
1776 }
1777 break;
1778
1779 case EFI_IFR_EXTEND_OP_CLASS:
1780 CopyMem (&FormSet->Class, &((EFI_IFR_GUID_CLASS *) OpCodeData)->Class, sizeof (UINT16));
1781 break;
1782
1783 case EFI_IFR_EXTEND_OP_SUBCLASS:
1784 CopyMem (&FormSet->SubClass, &((EFI_IFR_GUID_SUBCLASS *) OpCodeData)->SubClass, sizeof (UINT16));
1785 break;
1786
1787 default:
1788 break;
1789 }
1790 }
1791
1792 break;
1793
1794 //
1795 // Scope End
1796 //
1797 case EFI_IFR_END_OP:
1798 Status = PopScope (&ScopeOpCode);
1799 if (EFI_ERROR (Status)) {
1800 ResetScopeStack ();
1801 return Status;
1802 }
1803
1804 switch (ScopeOpCode) {
1805 case EFI_IFR_FORM_SET_OP:
1806 //
1807 // End of FormSet, update FormSet IFR binary length
1808 // to stop parsing substantial OpCodes
1809 //
1810 FormSet->IfrBinaryLength = OpCodeOffset;
1811 break;
1812
1813 case EFI_IFR_FORM_OP:
1814 //
1815 // End of Form
1816 //
1817 CurrentForm = NULL;
1818 SuppressForQuestion = FALSE;
1819 break;
1820
1821 case EFI_IFR_ONE_OF_OPTION_OP:
1822 //
1823 // End of Option
1824 //
1825 CurrentOption = NULL;
1826 break;
1827
1828 case EFI_IFR_SUBTITLE_OP:
1829 mInScopeSubtitle = FALSE;
1830 break;
1831
1832 case EFI_IFR_NO_SUBMIT_IF_OP:
1833 case EFI_IFR_INCONSISTENT_IF_OP:
1834 //
1835 // Ignore end of EFI_IFR_NO_SUBMIT_IF and EFI_IFR_INCONSISTENT_IF
1836 //
1837 break;
1838
1839 case EFI_IFR_SUPPRESS_IF_OP:
1840 if (SuppressForOption) {
1841 InScopeOptionSuppress = FALSE;
1842 } else if (SuppressForQuestion) {
1843 mInScopeSuppress = FALSE;
1844 } else {
1845 InScopeFormSuppress = FALSE;
1846 }
1847 break;
1848
1849 case EFI_IFR_GRAY_OUT_IF_OP:
1850 mInScopeGrayOut = FALSE;
1851 break;
1852
1853 case EFI_IFR_DISABLE_IF_OP:
1854 mInScopeDisable = FALSE;
1855 OpCodeDisabled = FALSE;
1856 break;
1857
1858 case EFI_IFR_ONE_OF_OP:
1859 case EFI_IFR_ORDERED_LIST_OP:
1860 SuppressForOption = FALSE;
1861 break;
1862
1863 case EFI_IFR_DEFAULT_OP:
1864 InScopeDefault = FALSE;
1865 break;
1866
1867 default:
1868 if (IsExpressionOpCode (ScopeOpCode)) {
1869 if (mInScopeDisable && CurrentForm == NULL) {
1870 //
1871 // This is DisableIf expression for Form, it should be a constant expression
1872 //
1873 ASSERT (CurrentExpression != NULL);
1874 Status = EvaluateExpression (FormSet, CurrentForm, CurrentExpression);
1875 if (EFI_ERROR (Status)) {
1876 return Status;
1877 }
1878
1879 if (CurrentExpression->Result.Type != EFI_IFR_TYPE_BOOLEAN) {
1880 return EFI_INVALID_PARAMETER;
1881 }
1882
1883 OpCodeDisabled = CurrentExpression->Result.Value.b;
1884 //
1885 // DisableIf Expression is only used once and not quequed, free it
1886 //
1887 DestroyExpression (CurrentExpression);
1888 }
1889
1890 //
1891 // End of current Expression
1892 //
1893 CurrentExpression = NULL;
1894 }
1895 break;
1896 }
1897 break;
1898
1899 default:
1900 break;
1901 }
1902 }
1903
1904 return EFI_SUCCESS;
1905 }
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