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Add a check for CreateQuestion may be return NULL.
[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 #include "Ui.h"
17
18 UINT16 mStatementIndex;
19 UINT16 mExpressionOpCodeIndex;
20
21 BOOLEAN mInScopeSubtitle;
22 BOOLEAN mInScopeSuppress;
23 BOOLEAN mInScopeGrayOut;
24 BOOLEAN mInScopeDisable;
25 FORM_EXPRESSION *mSuppressExpression;
26 FORM_EXPRESSION *mGrayOutExpression;
27 FORM_EXPRESSION *mDisableExpression;
28
29 /**
30 Initialize Statement header members.
31
32 @param OpCodeData Pointer of the raw OpCode data.
33 @param FormSet Pointer of the current FormSe.
34 @param Form Pointer of the current Form.
35
36 @return The Statement.
37
38 **/
39 FORM_BROWSER_STATEMENT *
40 CreateStatement (
41 IN UINT8 *OpCodeData,
42 IN OUT FORM_BROWSER_FORMSET *FormSet,
43 IN OUT FORM_BROWSER_FORM *Form
44 )
45 {
46 FORM_BROWSER_STATEMENT *Statement;
47 EFI_IFR_STATEMENT_HEADER *StatementHdr;
48
49 if (Form == NULL) {
50 //
51 // We are currently not in a Form Scope, so just skip this Statement
52 //
53 return NULL;
54 }
55
56 Statement = &FormSet->StatementBuffer[mStatementIndex];
57 mStatementIndex++;
58
59 InitializeListHead (&Statement->DefaultListHead);
60 InitializeListHead (&Statement->OptionListHead);
61 InitializeListHead (&Statement->InconsistentListHead);
62 InitializeListHead (&Statement->NoSubmitListHead);
63
64 Statement->Signature = FORM_BROWSER_STATEMENT_SIGNATURE;
65
66 Statement->Operand = ((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode;
67
68 StatementHdr = (EFI_IFR_STATEMENT_HEADER *) (OpCodeData + sizeof (EFI_IFR_OP_HEADER));
69 CopyMem (&Statement->Prompt, &StatementHdr->Prompt, sizeof (EFI_STRING_ID));
70 CopyMem (&Statement->Help, &StatementHdr->Help, sizeof (EFI_STRING_ID));
71
72 if (mInScopeSuppress) {
73 Statement->SuppressExpression = mSuppressExpression;
74 }
75
76 if (mInScopeGrayOut) {
77 Statement->GrayOutExpression = mGrayOutExpression;
78 }
79
80
81 if (mInScopeDisable) {
82 Statement->DisableExpression = mDisableExpression;
83 }
84
85 Statement->InSubtitle = mInScopeSubtitle;
86
87 //
88 // Insert this Statement into current Form
89 //
90 InsertTailList (&Form->StatementListHead, &Statement->Link);
91
92 return Statement;
93 }
94
95 /**
96 Convert a numeric value to a Unicode String and insert it to String Package.
97 This string is used as the Unicode Name for the EFI Variable. This is to support
98 the deprecated vareqval opcode.
99
100 @param FormSet The FormSet.
101 @param Statement The numeric question whose VarStoreInfo.VarName is the
102 numeric value which is used to produce the Unicode Name
103 for the EFI Variable.
104
105 If the Statement is NULL, the ASSERT.
106 If the opcode is not Numeric, then ASSERT.
107
108 @retval EFI_SUCCESS The funtion always succeeds.
109 **/
110 EFI_STATUS
111 UpdateCheckBoxStringToken (
112 IN CONST FORM_BROWSER_FORMSET *FormSet,
113 IN FORM_BROWSER_STATEMENT *Statement
114 )
115 {
116 CHAR16 Str[MAXIMUM_VALUE_CHARACTERS];
117 EFI_STRING_ID Id;
118
119 ASSERT (Statement != NULL);
120 ASSERT (Statement->Operand == EFI_IFR_NUMERIC_OP);
121
122 UnicodeValueToString (Str, 0, Statement->VarStoreInfo.VarName, MAXIMUM_VALUE_CHARACTERS - 1);
123
124 Id = HiiSetString (FormSet->HiiHandle, 0, Str, NULL);
125 if (Id == 0) {
126 return EFI_OUT_OF_RESOURCES;
127 }
128
129 Statement->VarStoreInfo.VarName = Id;
130
131 return EFI_SUCCESS;
132 }
133
134 /**
135 Check if the next opcode is the EFI_IFR_EXTEND_OP_VAREQNAME.
136
137 @param OpCodeData The current opcode.
138
139 @retval TRUE Yes.
140 @retval FALSE No.
141 **/
142 BOOLEAN
143 IsNextOpCodeGuidedVarEqName (
144 UINT8 *OpCodeData
145 )
146 {
147 //
148 // Get next opcode
149 //
150 OpCodeData += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
151 if (*OpCodeData == EFI_IFR_GUID_OP) {
152 if (CompareGuid (&gEfiIfrFrameworkGuid, (EFI_GUID *)(OpCodeData + sizeof (EFI_IFR_OP_HEADER)))) {
153 //
154 // Specific GUIDed opcodes to support IFR generated from Framework HII VFR
155 //
156 if ((((EFI_IFR_GUID_VAREQNAME *) OpCodeData)->ExtendOpCode) == EFI_IFR_EXTEND_OP_VAREQNAME) {
157 return TRUE;
158 }
159 }
160 }
161
162 return FALSE;
163 }
164
165 /**
166 Initialize Question's members.
167
168 @param OpCodeData Pointer of the raw OpCode data.
169 @param FormSet Pointer of the current FormSet.
170 @param Form Pointer of the current Form.
171
172 @return The Question.
173
174 **/
175 FORM_BROWSER_STATEMENT *
176 CreateQuestion (
177 IN UINT8 *OpCodeData,
178 IN OUT FORM_BROWSER_FORMSET *FormSet,
179 IN OUT FORM_BROWSER_FORM *Form
180 )
181 {
182 FORM_BROWSER_STATEMENT *Statement;
183 EFI_IFR_QUESTION_HEADER *QuestionHdr;
184 LIST_ENTRY *Link;
185 FORMSET_STORAGE *Storage;
186 NAME_VALUE_NODE *NameValueNode;
187 EFI_STATUS Status;
188
189 Statement = CreateStatement (OpCodeData, FormSet, Form);
190 if (Statement == NULL) {
191 return NULL;
192 }
193
194 QuestionHdr = (EFI_IFR_QUESTION_HEADER *) (OpCodeData + sizeof (EFI_IFR_OP_HEADER));
195 CopyMem (&Statement->QuestionId, &QuestionHdr->QuestionId, sizeof (EFI_QUESTION_ID));
196 CopyMem (&Statement->VarStoreId, &QuestionHdr->VarStoreId, sizeof (EFI_VARSTORE_ID));
197 CopyMem (&Statement->VarStoreInfo.VarOffset, &QuestionHdr->VarStoreInfo.VarOffset, sizeof (UINT16));
198
199 Statement->QuestionFlags = QuestionHdr->Flags;
200
201 if (Statement->VarStoreId == 0) {
202 //
203 // VarStoreId of zero indicates no variable storage
204 //
205 return Statement;
206 }
207
208 //
209 // Take a look at next OpCode to see whether it is a GUIDed opcode to support
210 // Framework Compatibility
211 //
212 if (FeaturePcdGet (PcdFrameworkCompatibilitySupport)) {
213 if ((*OpCodeData == EFI_IFR_NUMERIC_OP) && IsNextOpCodeGuidedVarEqName (OpCodeData)) {
214 Status = UpdateCheckBoxStringToken (FormSet, Statement);
215 if (EFI_ERROR (Status)) {
216 return NULL;
217 }
218 }
219 }
220
221 //
222 // Find Storage for this Question
223 //
224 Link = GetFirstNode (&FormSet->StorageListHead);
225 while (!IsNull (&FormSet->StorageListHead, Link)) {
226 Storage = FORMSET_STORAGE_FROM_LINK (Link);
227
228 if (Storage->VarStoreId == Statement->VarStoreId) {
229 Statement->Storage = Storage;
230 break;
231 }
232
233 Link = GetNextNode (&FormSet->StorageListHead, Link);
234 }
235 ASSERT (Statement->Storage != NULL);
236
237 //
238 // Initialilze varname for Name/Value or EFI Variable
239 //
240 if ((Statement->Storage->Type == EFI_HII_VARSTORE_NAME_VALUE) ||
241 (Statement->Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE)) {
242 Statement->VariableName = GetToken (Statement->VarStoreInfo.VarName, FormSet->HiiHandle);
243 ASSERT (Statement->VariableName != NULL);
244
245 if (Statement->Storage->Type == EFI_HII_VARSTORE_NAME_VALUE) {
246 //
247 // Insert to Name/Value varstore list
248 //
249 NameValueNode = AllocateZeroPool (sizeof (NAME_VALUE_NODE));
250 ASSERT (NameValueNode != NULL);
251 NameValueNode->Signature = NAME_VALUE_NODE_SIGNATURE;
252 NameValueNode->Name = AllocateCopyPool (StrSize (Statement->VariableName), Statement->VariableName);
253 ASSERT (NameValueNode->Name != NULL);
254 NameValueNode->Value = AllocateZeroPool (0x10);
255 ASSERT (NameValueNode->Value != NULL);
256 NameValueNode->EditValue = AllocateZeroPool (0x10);
257 ASSERT (NameValueNode->EditValue != NULL);
258
259 InsertTailList (&Statement->Storage->NameValueListHead, &NameValueNode->Link);
260 }
261 }
262
263 return Statement;
264 }
265
266
267 /**
268 Allocate a FORM_EXPRESSION node.
269
270 @param Form The Form associated with this Expression
271
272 @return Pointer to a FORM_EXPRESSION data structure.
273
274 **/
275 FORM_EXPRESSION *
276 CreateExpression (
277 IN OUT FORM_BROWSER_FORM *Form
278 )
279 {
280 FORM_EXPRESSION *Expression;
281
282 Expression = AllocateZeroPool (sizeof (FORM_EXPRESSION));
283 ASSERT (Expression != NULL);
284 Expression->Signature = FORM_EXPRESSION_SIGNATURE;
285 InitializeListHead (&Expression->OpCodeListHead);
286
287 return Expression;
288 }
289
290
291 /**
292 Allocate a FORMSET_STORAGE data structure and insert to FormSet Storage List.
293
294 @param FormSet Pointer of the current FormSet
295
296 @return Pointer to a FORMSET_STORAGE data structure.
297
298 **/
299 FORMSET_STORAGE *
300 CreateStorage (
301 IN FORM_BROWSER_FORMSET *FormSet
302 )
303 {
304 FORMSET_STORAGE *Storage;
305
306 Storage = AllocateZeroPool (sizeof (FORMSET_STORAGE));
307 ASSERT (Storage != NULL);
308 Storage->Signature = FORMSET_STORAGE_SIGNATURE;
309 InitializeListHead (&Storage->NameValueListHead);
310 InsertTailList (&FormSet->StorageListHead, &Storage->Link);
311
312 return Storage;
313 }
314
315
316 /**
317 Create ConfigHdr string for a storage.
318
319 @param FormSet Pointer of the current FormSet
320 @param Storage Pointer of the storage
321
322 @retval EFI_SUCCESS Initialize ConfigHdr success
323
324 **/
325 EFI_STATUS
326 InitializeConfigHdr (
327 IN FORM_BROWSER_FORMSET *FormSet,
328 IN OUT FORMSET_STORAGE *Storage
329 )
330 {
331 CHAR16 *Name;
332
333 if (Storage->Type == EFI_HII_VARSTORE_BUFFER) {
334 Name = Storage->Name;
335 } else {
336 Name = NULL;
337 }
338
339 Storage->ConfigHdr = HiiConstructConfigHdr (
340 &Storage->Guid,
341 Name,
342 FormSet->DriverHandle
343 );
344
345 if (Storage->ConfigHdr == NULL) {
346 return EFI_NOT_FOUND;
347 }
348
349 Storage->ConfigRequest = AllocateCopyPool (StrSize (Storage->ConfigHdr), Storage->ConfigHdr);
350 Storage->SpareStrLen = 0;
351
352 return EFI_SUCCESS;
353 }
354
355
356 /**
357 Initialize Request Element of a Question. <RequestElement> ::= '&'<BlockName> | '&'<Label>
358
359 @param FormSet Pointer of the current FormSet.
360 @param Question The Question to be initialized.
361
362 @retval EFI_SUCCESS Function success.
363 @retval EFI_INVALID_PARAMETER No storage associated with the Question.
364
365 **/
366 EFI_STATUS
367 InitializeRequestElement (
368 IN OUT FORM_BROWSER_FORMSET *FormSet,
369 IN OUT FORM_BROWSER_STATEMENT *Question
370 )
371 {
372 FORMSET_STORAGE *Storage;
373 UINTN StrLen;
374 UINTN StringSize;
375 CHAR16 *NewStr;
376 CHAR16 RequestElement[30];
377
378 Storage = Question->Storage;
379 if (Storage == NULL) {
380 return EFI_INVALID_PARAMETER;
381 }
382
383 if (Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
384 //
385 // <ConfigRequest> is unnecessary for EFI variable storage,
386 // GetVariable()/SetVariable() will be used to retrieve/save values
387 //
388 return EFI_SUCCESS;
389 }
390
391 //
392 // Prepare <RequestElement>
393 //
394 if (Storage->Type == EFI_HII_VARSTORE_BUFFER) {
395 StrLen = UnicodeSPrint (
396 RequestElement,
397 30 * sizeof (CHAR16),
398 L"&OFFSET=%x&WIDTH=%x",
399 Question->VarStoreInfo.VarOffset,
400 Question->StorageWidth
401 );
402 Question->BlockName = AllocateCopyPool ((StrLen + 1) * sizeof (CHAR16), RequestElement);
403 } else {
404 StrLen = UnicodeSPrint (RequestElement, 30 * sizeof (CHAR16), L"&%s", Question->VariableName);
405 }
406
407 if ((Question->Operand == EFI_IFR_PASSWORD_OP) && ((Question->QuestionFlags & EFI_IFR_FLAG_CALLBACK) == EFI_IFR_FLAG_CALLBACK)) {
408 //
409 // Password with CALLBACK flag is stored in encoded format,
410 // so don't need to append it to <ConfigRequest>
411 //
412 return EFI_SUCCESS;
413 }
414
415 //
416 // Append <RequestElement> to <ConfigRequest>
417 //
418 if (StrLen > Storage->SpareStrLen) {
419 //
420 // Old String buffer is not sufficient for RequestElement, allocate a new one
421 //
422 StringSize = (Storage->ConfigRequest != NULL) ? StrSize (Storage->ConfigRequest) : sizeof (CHAR16);
423 NewStr = AllocateZeroPool (StringSize + CONFIG_REQUEST_STRING_INCREMENTAL * sizeof (CHAR16));
424 ASSERT (NewStr != NULL);
425 if (Storage->ConfigRequest != NULL) {
426 CopyMem (NewStr, Storage->ConfigRequest, StringSize);
427 FreePool (Storage->ConfigRequest);
428 }
429 Storage->ConfigRequest = NewStr;
430 Storage->SpareStrLen = CONFIG_REQUEST_STRING_INCREMENTAL;
431 }
432
433 StrCat (Storage->ConfigRequest, RequestElement);
434 Storage->ElementCount++;
435 Storage->SpareStrLen -= StrLen;
436
437 return EFI_SUCCESS;
438 }
439
440
441 /**
442 Free resources of a Expression.
443
444 @param FormSet Pointer of the Expression
445
446 **/
447 VOID
448 DestroyExpression (
449 IN FORM_EXPRESSION *Expression
450 )
451 {
452 LIST_ENTRY *Link;
453 EXPRESSION_OPCODE *OpCode;
454
455 while (!IsListEmpty (&Expression->OpCodeListHead)) {
456 Link = GetFirstNode (&Expression->OpCodeListHead);
457 OpCode = EXPRESSION_OPCODE_FROM_LINK (Link);
458 RemoveEntryList (&OpCode->Link);
459
460 if (OpCode->ValueList != NULL) {
461 FreePool (OpCode->ValueList);
462 }
463 }
464
465 //
466 // Free this Expression
467 //
468 FreePool (Expression);
469 }
470
471
472 /**
473 Free resources of a storage.
474
475 @param Storage Pointer of the storage
476
477 **/
478 VOID
479 DestroyStorage (
480 IN FORMSET_STORAGE *Storage
481 )
482 {
483 LIST_ENTRY *Link;
484 NAME_VALUE_NODE *NameValueNode;
485
486 if (Storage == NULL) {
487 return;
488 }
489
490 if (Storage->Name != NULL) {
491 FreePool (Storage->Name);
492 }
493 if (Storage->Buffer != NULL) {
494 FreePool (Storage->Buffer);
495 }
496 if (Storage->EditBuffer != NULL) {
497 FreePool (Storage->EditBuffer);
498 }
499
500 while (!IsListEmpty (&Storage->NameValueListHead)) {
501 Link = GetFirstNode (&Storage->NameValueListHead);
502 NameValueNode = NAME_VALUE_NODE_FROM_LINK (Link);
503 RemoveEntryList (&NameValueNode->Link);
504
505 if (NameValueNode->Name != NULL) {
506 FreePool (NameValueNode->Name);
507 }
508 if (NameValueNode->Value != NULL) {
509 FreePool (NameValueNode->Value);
510 }
511 if (NameValueNode->EditValue != NULL) {
512 FreePool (NameValueNode->EditValue);
513 }
514 FreePool (NameValueNode);
515 }
516
517 if (Storage->ConfigHdr != NULL) {
518 FreePool (Storage->ConfigHdr);
519 }
520 if (Storage->ConfigRequest != NULL) {
521 FreePool (Storage->ConfigRequest);
522 }
523
524 FreePool (Storage);
525 }
526
527
528 /**
529 Free resources of a Statement.
530
531 @param Statement Pointer of the Statement
532
533 **/
534 VOID
535 DestroyStatement (
536 IN OUT FORM_BROWSER_STATEMENT *Statement
537 )
538 {
539 LIST_ENTRY *Link;
540 QUESTION_DEFAULT *Default;
541 QUESTION_OPTION *Option;
542 FORM_EXPRESSION *Expression;
543
544 //
545 // Free Default value List
546 //
547 while (!IsListEmpty (&Statement->DefaultListHead)) {
548 Link = GetFirstNode (&Statement->DefaultListHead);
549 Default = QUESTION_DEFAULT_FROM_LINK (Link);
550 RemoveEntryList (&Default->Link);
551
552 FreePool (Default);
553 }
554
555 //
556 // Free Options List
557 //
558 while (!IsListEmpty (&Statement->OptionListHead)) {
559 Link = GetFirstNode (&Statement->OptionListHead);
560 Option = QUESTION_OPTION_FROM_LINK (Link);
561 RemoveEntryList (&Option->Link);
562
563 FreePool (Option);
564 }
565
566 //
567 // Free Inconsistent List
568 //
569 while (!IsListEmpty (&Statement->InconsistentListHead)) {
570 Link = GetFirstNode (&Statement->InconsistentListHead);
571 Expression = FORM_EXPRESSION_FROM_LINK (Link);
572 RemoveEntryList (&Expression->Link);
573
574 DestroyExpression (Expression);
575 }
576
577 //
578 // Free NoSubmit List
579 //
580 while (!IsListEmpty (&Statement->NoSubmitListHead)) {
581 Link = GetFirstNode (&Statement->NoSubmitListHead);
582 Expression = FORM_EXPRESSION_FROM_LINK (Link);
583 RemoveEntryList (&Expression->Link);
584
585 DestroyExpression (Expression);
586 }
587
588 if (Statement->VariableName != NULL) {
589 FreePool (Statement->VariableName);
590 }
591 if (Statement->BlockName != NULL) {
592 FreePool (Statement->BlockName);
593 }
594 }
595
596
597 /**
598 Free resources of a Form.
599
600 @param Form Pointer of the Form.
601
602 **/
603 VOID
604 DestroyForm (
605 IN OUT FORM_BROWSER_FORM *Form
606 )
607 {
608 LIST_ENTRY *Link;
609 FORM_EXPRESSION *Expression;
610 FORM_BROWSER_STATEMENT *Statement;
611
612 //
613 // Free Form Expressions
614 //
615 while (!IsListEmpty (&Form->ExpressionListHead)) {
616 Link = GetFirstNode (&Form->ExpressionListHead);
617 Expression = FORM_EXPRESSION_FROM_LINK (Link);
618 RemoveEntryList (&Expression->Link);
619
620 DestroyExpression (Expression);
621 }
622
623 //
624 // Free Statements/Questions
625 //
626 while (!IsListEmpty (&Form->StatementListHead)) {
627 Link = GetFirstNode (&Form->StatementListHead);
628 Statement = FORM_BROWSER_STATEMENT_FROM_LINK (Link);
629 RemoveEntryList (&Statement->Link);
630
631 DestroyStatement (Statement);
632 }
633
634 //
635 // Free this Form
636 //
637 FreePool (Form);
638 }
639
640
641 /**
642 Free resources allocated for a FormSet.
643
644 @param FormSet Pointer of the FormSet
645
646 **/
647 VOID
648 DestroyFormSet (
649 IN OUT FORM_BROWSER_FORMSET *FormSet
650 )
651 {
652 LIST_ENTRY *Link;
653 FORMSET_STORAGE *Storage;
654 FORMSET_DEFAULTSTORE *DefaultStore;
655 FORM_BROWSER_FORM *Form;
656
657 //
658 // Free IFR binary buffer
659 //
660 FreePool (FormSet->IfrBinaryData);
661
662 //
663 // Free FormSet Storage
664 //
665 if (FormSet->StorageListHead.ForwardLink != NULL) {
666 while (!IsListEmpty (&FormSet->StorageListHead)) {
667 Link = GetFirstNode (&FormSet->StorageListHead);
668 Storage = FORMSET_STORAGE_FROM_LINK (Link);
669 RemoveEntryList (&Storage->Link);
670
671 DestroyStorage (Storage);
672 }
673 }
674
675 //
676 // Free FormSet Default Store
677 //
678 if (FormSet->DefaultStoreListHead.ForwardLink != NULL) {
679 while (!IsListEmpty (&FormSet->DefaultStoreListHead)) {
680 Link = GetFirstNode (&FormSet->DefaultStoreListHead);
681 DefaultStore = FORMSET_DEFAULTSTORE_FROM_LINK (Link);
682 RemoveEntryList (&DefaultStore->Link);
683
684 FreePool (DefaultStore);
685 }
686 }
687
688 //
689 // Free Forms
690 //
691 if (FormSet->FormListHead.ForwardLink != NULL) {
692 while (!IsListEmpty (&FormSet->FormListHead)) {
693 Link = GetFirstNode (&FormSet->FormListHead);
694 Form = FORM_BROWSER_FORM_FROM_LINK (Link);
695 RemoveEntryList (&Form->Link);
696
697 DestroyForm (Form);
698 }
699 }
700
701 if (FormSet->StatementBuffer != NULL) {
702 FreePool (FormSet->StatementBuffer);
703 }
704 if (FormSet->ExpressionBuffer != NULL) {
705 FreePool (FormSet->ExpressionBuffer);
706 }
707
708 FreePool (FormSet);
709 }
710
711
712 /**
713 Tell whether this Operand is an Expression OpCode or not
714
715 @param Operand Operand of an IFR OpCode.
716
717 @retval TRUE This is an Expression OpCode.
718 @retval FALSE Not an Expression OpCode.
719
720 **/
721 BOOLEAN
722 IsExpressionOpCode (
723 IN UINT8 Operand
724 )
725 {
726 if (((Operand >= EFI_IFR_EQ_ID_VAL_OP) && (Operand <= EFI_IFR_NOT_OP)) ||
727 ((Operand >= EFI_IFR_MATCH_OP) && (Operand <= EFI_IFR_SPAN_OP)) ||
728 (Operand == EFI_IFR_CATENATE_OP) ||
729 (Operand == EFI_IFR_TO_LOWER_OP) ||
730 (Operand == EFI_IFR_TO_UPPER_OP) ||
731 (Operand == EFI_IFR_VERSION_OP)
732 ) {
733 return TRUE;
734 } else {
735 return FALSE;
736 }
737 }
738
739
740 /**
741 Calculate number of Statemens(Questions) and Expression OpCodes.
742
743 @param FormSet The FormSet to be counted.
744 @param NumberOfStatement Number of Statemens(Questions)
745 @param NumberOfExpression Number of Expression OpCodes
746
747 **/
748 VOID
749 CountOpCodes (
750 IN FORM_BROWSER_FORMSET *FormSet,
751 IN OUT UINT16 *NumberOfStatement,
752 IN OUT UINT16 *NumberOfExpression
753 )
754 {
755 UINT16 StatementCount;
756 UINT16 ExpressionCount;
757 UINT8 *OpCodeData;
758 UINTN Offset;
759 UINTN OpCodeLen;
760
761 Offset = 0;
762 StatementCount = 0;
763 ExpressionCount = 0;
764
765 while (Offset < FormSet->IfrBinaryLength) {
766 OpCodeData = FormSet->IfrBinaryData + Offset;
767 OpCodeLen = ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
768 Offset += OpCodeLen;
769
770 if (IsExpressionOpCode (((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode)) {
771 ExpressionCount++;
772 } else {
773 StatementCount++;
774 }
775 }
776
777 *NumberOfStatement = StatementCount;
778 *NumberOfExpression = ExpressionCount;
779 }
780
781
782
783 /**
784 Parse opcodes in the formset IFR binary.
785
786 @param FormSet Pointer of the FormSet data structure.
787
788 @retval EFI_SUCCESS Opcode parse success.
789 @retval Other Opcode parse fail.
790
791 **/
792 EFI_STATUS
793 ParseOpCodes (
794 IN FORM_BROWSER_FORMSET *FormSet
795 )
796 {
797 EFI_STATUS Status;
798 UINT16 Index;
799 FORM_BROWSER_FORM *CurrentForm;
800 FORM_BROWSER_STATEMENT *CurrentStatement;
801 EXPRESSION_OPCODE *ExpressionOpCode;
802 FORM_EXPRESSION *CurrentExpression;
803 UINT8 Operand;
804 UINT8 Scope;
805 UINTN OpCodeOffset;
806 UINTN OpCodeLength;
807 UINT8 *OpCodeData;
808 UINT8 ScopeOpCode;
809 FORMSET_STORAGE *Storage;
810 FORMSET_DEFAULTSTORE *DefaultStore;
811 QUESTION_DEFAULT *CurrentDefault;
812 QUESTION_OPTION *CurrentOption;
813 CHAR8 *AsciiString;
814 UINT16 NumberOfStatement;
815 UINT16 NumberOfExpression;
816 EFI_IMAGE_ID *ImageId;
817 BOOLEAN SuppressForOption;
818 BOOLEAN InScopeOptionSuppress;
819 FORM_EXPRESSION *OptionSuppressExpression;
820 UINT16 DepthOfDisable;
821 BOOLEAN OpCodeDisabled;
822 BOOLEAN SingleOpCodeExpression;
823 BOOLEAN InScopeDefault;
824 EFI_HII_VALUE *Value;
825
826 mInScopeSubtitle = FALSE;
827 SuppressForOption = FALSE;
828 mInScopeSuppress = FALSE;
829 InScopeOptionSuppress = FALSE;
830 mInScopeGrayOut = FALSE;
831 mInScopeDisable = FALSE;
832 DepthOfDisable = 0;
833 OpCodeDisabled = FALSE;
834 SingleOpCodeExpression = FALSE;
835 InScopeDefault = FALSE;
836 CurrentExpression = NULL;
837 CurrentDefault = NULL;
838 CurrentOption = NULL;
839 OptionSuppressExpression = NULL;
840 ImageId = NULL;
841
842 //
843 // Get the number of Statements and Expressions
844 //
845 CountOpCodes (FormSet, &NumberOfStatement, &NumberOfExpression);
846
847 mStatementIndex = 0;
848 FormSet->StatementBuffer = AllocateZeroPool (NumberOfStatement * sizeof (FORM_BROWSER_STATEMENT));
849 if (FormSet->StatementBuffer == NULL) {
850 return EFI_OUT_OF_RESOURCES;
851 }
852
853 mExpressionOpCodeIndex = 0;
854 FormSet->ExpressionBuffer = AllocateZeroPool (NumberOfExpression * sizeof (EXPRESSION_OPCODE));
855 if (FormSet->ExpressionBuffer == NULL) {
856 return EFI_OUT_OF_RESOURCES;
857 }
858
859 InitializeListHead (&FormSet->StorageListHead);
860 InitializeListHead (&FormSet->DefaultStoreListHead);
861 InitializeListHead (&FormSet->FormListHead);
862
863 CurrentForm = NULL;
864 CurrentStatement = NULL;
865
866 ResetScopeStack ();
867
868 OpCodeOffset = 0;
869 while (OpCodeOffset < FormSet->IfrBinaryLength) {
870 OpCodeData = FormSet->IfrBinaryData + OpCodeOffset;
871
872 OpCodeLength = ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
873 OpCodeOffset += OpCodeLength;
874 Operand = ((EFI_IFR_OP_HEADER *) OpCodeData)->OpCode;
875 Scope = ((EFI_IFR_OP_HEADER *) OpCodeData)->Scope;
876
877 //
878 // If scope bit set, push onto scope stack
879 //
880 if (Scope != 0) {
881 PushScope (Operand);
882 }
883
884 if (OpCodeDisabled) {
885 //
886 // DisableIf Expression is evaluated to be TRUE, try to find its end.
887 // Here only cares the EFI_IFR_DISABLE_IF and EFI_IFR_END
888 //
889 if (Operand == EFI_IFR_DISABLE_IF_OP) {
890 DepthOfDisable++;
891 } else if (Operand == EFI_IFR_END_OP) {
892 Status = PopScope (&ScopeOpCode);
893 if (EFI_ERROR (Status)) {
894 return Status;
895 }
896
897 if (ScopeOpCode == EFI_IFR_DISABLE_IF_OP) {
898 if (DepthOfDisable == 0) {
899 mInScopeDisable = FALSE;
900 OpCodeDisabled = FALSE;
901 } else {
902 DepthOfDisable--;
903 }
904 }
905 }
906 continue;
907 }
908
909 if (IsExpressionOpCode (Operand)) {
910 ExpressionOpCode = &FormSet->ExpressionBuffer[mExpressionOpCodeIndex];
911 mExpressionOpCodeIndex++;
912
913 ExpressionOpCode->Signature = EXPRESSION_OPCODE_SIGNATURE;
914 ExpressionOpCode->Operand = Operand;
915 Value = &ExpressionOpCode->Value;
916
917 switch (Operand) {
918 case EFI_IFR_EQ_ID_VAL_OP:
919 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_VAL *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
920
921 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
922 CopyMem (&Value->Value.u16, &((EFI_IFR_EQ_ID_VAL *) OpCodeData)->Value, sizeof (UINT16));
923 break;
924
925 case EFI_IFR_EQ_ID_ID_OP:
926 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_ID *) OpCodeData)->QuestionId1, sizeof (EFI_QUESTION_ID));
927 CopyMem (&ExpressionOpCode->QuestionId2, &((EFI_IFR_EQ_ID_ID *) OpCodeData)->QuestionId2, sizeof (EFI_QUESTION_ID));
928 break;
929
930 case EFI_IFR_EQ_ID_LIST_OP:
931 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_LIST *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
932 CopyMem (&ExpressionOpCode->ListLength, &((EFI_IFR_EQ_ID_LIST *) OpCodeData)->ListLength, sizeof (UINT16));
933 ExpressionOpCode->ValueList = AllocateCopyPool (ExpressionOpCode->ListLength * sizeof (UINT16), &((EFI_IFR_EQ_ID_LIST *) OpCodeData)->ValueList);
934 break;
935
936 case EFI_IFR_TO_STRING_OP:
937 case EFI_IFR_FIND_OP:
938 ExpressionOpCode->Format = (( EFI_IFR_TO_STRING *) OpCodeData)->Format;
939 break;
940
941 case EFI_IFR_STRING_REF1_OP:
942 Value->Type = EFI_IFR_TYPE_STRING;
943 CopyMem (&Value->Value.string, &(( EFI_IFR_STRING_REF1 *) OpCodeData)->StringId, sizeof (EFI_STRING_ID));
944 break;
945
946 case EFI_IFR_RULE_REF_OP:
947 ExpressionOpCode->RuleId = (( EFI_IFR_RULE_REF *) OpCodeData)->RuleId;
948 break;
949
950 case EFI_IFR_SPAN_OP:
951 ExpressionOpCode->Flags = (( EFI_IFR_SPAN *) OpCodeData)->Flags;
952 break;
953
954 case EFI_IFR_THIS_OP:
955 ASSERT (CurrentStatement != NULL);
956 ExpressionOpCode->QuestionId = CurrentStatement->QuestionId;
957 break;
958
959 case EFI_IFR_QUESTION_REF1_OP:
960 CopyMem (&ExpressionOpCode->QuestionId, &((EFI_IFR_EQ_ID_LIST *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
961 break;
962
963 case EFI_IFR_QUESTION_REF3_OP:
964 if (OpCodeLength >= sizeof (EFI_IFR_QUESTION_REF3_2)) {
965 CopyMem (&ExpressionOpCode->DevicePath, &(( EFI_IFR_QUESTION_REF3_2 *) OpCodeData)->DevicePath, sizeof (EFI_STRING_ID));
966
967 if (OpCodeLength >= sizeof (EFI_IFR_QUESTION_REF3_3)) {
968 CopyMem (&ExpressionOpCode->Guid, &(( EFI_IFR_QUESTION_REF3_3 *) OpCodeData)->Guid, sizeof (EFI_GUID));
969 }
970 }
971 break;
972
973 //
974 // constant
975 //
976 case EFI_IFR_TRUE_OP:
977 Value->Type = EFI_IFR_TYPE_BOOLEAN;
978 Value->Value.b = TRUE;
979 break;
980
981 case EFI_IFR_FALSE_OP:
982 Value->Type = EFI_IFR_TYPE_BOOLEAN;
983 Value->Value.b = FALSE;
984 break;
985
986 case EFI_IFR_ONE_OP:
987 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
988 Value->Value.u8 = 1;
989 break;
990
991 case EFI_IFR_ZERO_OP:
992 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
993 Value->Value.u8 = 0;
994 break;
995
996 case EFI_IFR_ONES_OP:
997 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
998 Value->Value.u64 = 0xffffffffffffffffULL;
999 break;
1000
1001 case EFI_IFR_UINT8_OP:
1002 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
1003 Value->Value.u8 = (( EFI_IFR_UINT8 *) OpCodeData)->Value;
1004 break;
1005
1006 case EFI_IFR_UINT16_OP:
1007 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
1008 CopyMem (&Value->Value.u16, &(( EFI_IFR_UINT16 *) OpCodeData)->Value, sizeof (UINT16));
1009 break;
1010
1011 case EFI_IFR_UINT32_OP:
1012 Value->Type = EFI_IFR_TYPE_NUM_SIZE_32;
1013 CopyMem (&Value->Value.u32, &(( EFI_IFR_UINT32 *) OpCodeData)->Value, sizeof (UINT32));
1014 break;
1015
1016 case EFI_IFR_UINT64_OP:
1017 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1018 CopyMem (&Value->Value.u64, &(( EFI_IFR_UINT64 *) OpCodeData)->Value, sizeof (UINT64));
1019 break;
1020
1021 case EFI_IFR_UNDEFINED_OP:
1022 Value->Type = EFI_IFR_TYPE_OTHER;
1023 break;
1024
1025 case EFI_IFR_VERSION_OP:
1026 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
1027 Value->Value.u16 = EFI_IFR_SPECIFICATION_VERSION;
1028 break;
1029
1030 default:
1031 break;
1032 }
1033
1034 InsertTailList (&CurrentExpression->OpCodeListHead, &ExpressionOpCode->Link);
1035
1036 if (SingleOpCodeExpression) {
1037 //
1038 // There are two cases to indicate the end of an Expression:
1039 // for single OpCode expression: one Expression OpCode
1040 // for expression consists of more than one OpCode: EFI_IFR_END
1041 //
1042 SingleOpCodeExpression = FALSE;
1043
1044 if (mInScopeDisable && CurrentForm == NULL) {
1045 //
1046 // This is DisableIf expression for Form, it should be a constant expression
1047 //
1048 Status = EvaluateExpression (FormSet, CurrentForm, CurrentExpression);
1049 if (EFI_ERROR (Status)) {
1050 return Status;
1051 }
1052
1053 ASSERT (CurrentExpression != NULL);
1054 if (CurrentExpression->Result.Type != EFI_IFR_TYPE_BOOLEAN) {
1055 return EFI_INVALID_PARAMETER;
1056 }
1057
1058 OpCodeDisabled = CurrentExpression->Result.Value.b;
1059 }
1060
1061 CurrentExpression = NULL;
1062 }
1063
1064 continue;
1065 }
1066
1067 //
1068 // Parse the Opcode
1069 //
1070 switch (Operand) {
1071
1072 case EFI_IFR_FORM_SET_OP:
1073 //
1074 // check the formset GUID
1075 //
1076 if (CompareMem (&FormSet->Guid, &((EFI_IFR_FORM_SET *) OpCodeData)->Guid, sizeof (EFI_GUID)) != 0) {
1077 return EFI_INVALID_PARAMETER;
1078 }
1079
1080 CopyMem (&FormSet->FormSetTitle, &((EFI_IFR_FORM_SET *) OpCodeData)->FormSetTitle, sizeof (EFI_STRING_ID));
1081 CopyMem (&FormSet->Help, &((EFI_IFR_FORM_SET *) OpCodeData)->Help, sizeof (EFI_STRING_ID));
1082
1083 //
1084 // The formset OpCode contains ClassGuid
1085 //
1086 FormSet->NumberOfClassGuid = (UINT8) (((EFI_IFR_FORM_SET *) OpCodeData)->Flags & 0x3);
1087 CopyMem (FormSet->ClassGuid, OpCodeData + sizeof (EFI_IFR_FORM_SET), FormSet->NumberOfClassGuid * sizeof (EFI_GUID));
1088 break;
1089
1090 case EFI_IFR_FORM_OP:
1091 //
1092 // Create a new Form for this FormSet
1093 //
1094 CurrentForm = AllocateZeroPool (sizeof (FORM_BROWSER_FORM));
1095 ASSERT (CurrentForm != NULL);
1096 CurrentForm->Signature = FORM_BROWSER_FORM_SIGNATURE;
1097 InitializeListHead (&CurrentForm->ExpressionListHead);
1098 InitializeListHead (&CurrentForm->StatementListHead);
1099
1100 CopyMem (&CurrentForm->FormId, &((EFI_IFR_FORM *) OpCodeData)->FormId, sizeof (UINT16));
1101 CopyMem (&CurrentForm->FormTitle, &((EFI_IFR_FORM *) OpCodeData)->FormTitle, sizeof (EFI_STRING_ID));
1102
1103 //
1104 // Insert into Form list of this FormSet
1105 //
1106 InsertTailList (&FormSet->FormListHead, &CurrentForm->Link);
1107 break;
1108
1109 //
1110 // Storage
1111 //
1112 case EFI_IFR_VARSTORE_OP:
1113 //
1114 // Create a buffer Storage for this FormSet
1115 //
1116 Storage = CreateStorage (FormSet);
1117 Storage->Type = EFI_HII_VARSTORE_BUFFER;
1118
1119 CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
1120 CopyMem (&Storage->Guid, &((EFI_IFR_VARSTORE *) OpCodeData)->Guid, sizeof (EFI_GUID));
1121 CopyMem (&Storage->Size, &((EFI_IFR_VARSTORE *) OpCodeData)->Size, sizeof (UINT16));
1122
1123 Storage->Buffer = AllocateZeroPool (Storage->Size);
1124 Storage->EditBuffer = AllocateZeroPool (Storage->Size);
1125
1126 AsciiString = (CHAR8 *) ((EFI_IFR_VARSTORE *) OpCodeData)->Name;
1127 Storage->Name = AllocateZeroPool (AsciiStrSize (AsciiString) * 2);
1128 ASSERT (Storage->Name != NULL);
1129 for (Index = 0; AsciiString[Index] != 0; Index++) {
1130 Storage->Name[Index] = (CHAR16) AsciiString[Index];
1131 }
1132
1133 //
1134 // Initialize <ConfigHdr>
1135 //
1136 InitializeConfigHdr (FormSet, Storage);
1137 break;
1138
1139 case EFI_IFR_VARSTORE_NAME_VALUE_OP:
1140 //
1141 // Create a name/value Storage for this FormSet
1142 //
1143 Storage = CreateStorage (FormSet);
1144 Storage->Type = EFI_HII_VARSTORE_NAME_VALUE;
1145
1146 CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE_NAME_VALUE *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
1147 CopyMem (&Storage->Guid, &((EFI_IFR_VARSTORE_NAME_VALUE *) OpCodeData)->Guid, sizeof (EFI_GUID));
1148
1149 //
1150 // Initialize <ConfigHdr>
1151 //
1152 InitializeConfigHdr (FormSet, Storage);
1153 break;
1154
1155 case EFI_IFR_VARSTORE_EFI_OP:
1156 //
1157 // Create a EFI variable Storage for this FormSet
1158 //
1159 Storage = CreateStorage (FormSet);
1160 Storage->Type = EFI_HII_VARSTORE_EFI_VARIABLE;
1161
1162 CopyMem (&Storage->VarStoreId, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->VarStoreId, sizeof (EFI_VARSTORE_ID));
1163 CopyMem (&Storage->Guid, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->Guid, sizeof (EFI_GUID));
1164 CopyMem (&Storage->Attributes, &((EFI_IFR_VARSTORE_EFI *) OpCodeData)->Attributes, sizeof (UINT32));
1165 break;
1166
1167 //
1168 // DefaultStore
1169 //
1170 case EFI_IFR_DEFAULTSTORE_OP:
1171 DefaultStore = AllocateZeroPool (sizeof (FORMSET_DEFAULTSTORE));
1172 ASSERT (DefaultStore != NULL);
1173 DefaultStore->Signature = FORMSET_DEFAULTSTORE_SIGNATURE;
1174
1175 CopyMem (&DefaultStore->DefaultId, &((EFI_IFR_DEFAULTSTORE *) OpCodeData)->DefaultId, sizeof (UINT16));
1176 CopyMem (&DefaultStore->DefaultName, &((EFI_IFR_DEFAULTSTORE *) OpCodeData)->DefaultName, sizeof (EFI_STRING_ID));
1177
1178 //
1179 // Insert to DefaultStore list of this Formset
1180 //
1181 InsertTailList (&FormSet->DefaultStoreListHead, &DefaultStore->Link);
1182 break;
1183
1184 //
1185 // Statements
1186 //
1187 case EFI_IFR_SUBTITLE_OP:
1188 CurrentStatement = CreateStatement (OpCodeData, FormSet, CurrentForm);
1189 ASSERT (CurrentStatement != NULL);
1190
1191 CurrentStatement->Flags = ((EFI_IFR_SUBTITLE *) OpCodeData)->Flags;
1192
1193 if (Scope != 0) {
1194 mInScopeSubtitle = TRUE;
1195 }
1196 break;
1197
1198 case EFI_IFR_TEXT_OP:
1199 CurrentStatement = CreateStatement (OpCodeData, FormSet, CurrentForm);
1200 ASSERT (CurrentStatement != NULL);
1201
1202 CopyMem (&CurrentStatement->TextTwo, &((EFI_IFR_TEXT *) OpCodeData)->TextTwo, sizeof (EFI_STRING_ID));
1203 break;
1204
1205 //
1206 // Questions
1207 //
1208 case EFI_IFR_ACTION_OP:
1209 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1210 ASSERT (CurrentStatement != NULL);
1211
1212 if (OpCodeLength == sizeof (EFI_IFR_ACTION_1)) {
1213 //
1214 // No QuestionConfig present, so no configuration string will be processed
1215 //
1216 CurrentStatement->QuestionConfig = 0;
1217 } else {
1218 CopyMem (&CurrentStatement->QuestionConfig, &((EFI_IFR_ACTION *) OpCodeData)->QuestionConfig, sizeof (EFI_STRING_ID));
1219 }
1220 break;
1221
1222 case EFI_IFR_RESET_BUTTON_OP:
1223 //
1224 // Create Statement
1225 //
1226 CurrentStatement = CreateStatement (OpCodeData, FormSet, CurrentForm);
1227 CopyMem (&CurrentStatement->DefaultId, &((EFI_IFR_RESET_BUTTON *) OpCodeData)->DefaultId, sizeof (EFI_DEFAULT_ID));
1228 break;
1229
1230 case EFI_IFR_REF_OP:
1231 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1232
1233 CopyMem (&CurrentStatement->RefFormId, &((EFI_IFR_REF *) OpCodeData)->FormId, sizeof (EFI_FORM_ID));
1234 if (OpCodeLength >= sizeof (EFI_IFR_REF2)) {
1235 CopyMem (&CurrentStatement->RefQuestionId, &((EFI_IFR_REF2 *) OpCodeData)->QuestionId, sizeof (EFI_QUESTION_ID));
1236
1237 if (OpCodeLength >= sizeof (EFI_IFR_REF3)) {
1238 CopyMem (&CurrentStatement->RefFormSetId, &((EFI_IFR_REF3 *) OpCodeData)->FormSetId, sizeof (EFI_GUID));
1239
1240 if (OpCodeLength >= sizeof (EFI_IFR_REF4)) {
1241 CopyMem (&CurrentStatement->RefDevicePath, &((EFI_IFR_REF4 *) OpCodeData)->DevicePath, sizeof (EFI_STRING_ID));
1242 }
1243 }
1244 }
1245 break;
1246
1247 case EFI_IFR_ONE_OF_OP:
1248 case EFI_IFR_NUMERIC_OP:
1249 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1250 ASSERT(CurrentStatement != NULL);
1251
1252 CurrentStatement->Flags = ((EFI_IFR_ONE_OF *) OpCodeData)->Flags;
1253 Value = &CurrentStatement->HiiValue;
1254
1255 switch (CurrentStatement->Flags & EFI_IFR_NUMERIC_SIZE) {
1256 case EFI_IFR_NUMERIC_SIZE_1:
1257 CurrentStatement->Minimum = ((EFI_IFR_NUMERIC *) OpCodeData)->data.u8.MinValue;
1258 CurrentStatement->Maximum = ((EFI_IFR_NUMERIC *) OpCodeData)->data.u8.MaxValue;
1259 CurrentStatement->Step = ((EFI_IFR_NUMERIC *) OpCodeData)->data.u8.Step;
1260 CurrentStatement->StorageWidth = sizeof (UINT8);
1261 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
1262 break;
1263
1264 case EFI_IFR_NUMERIC_SIZE_2:
1265 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u16.MinValue, sizeof (UINT16));
1266 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u16.MaxValue, sizeof (UINT16));
1267 CopyMem (&CurrentStatement->Step, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u16.Step, sizeof (UINT16));
1268 CurrentStatement->StorageWidth = sizeof (UINT16);
1269 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
1270 break;
1271
1272 case EFI_IFR_NUMERIC_SIZE_4:
1273 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u32.MinValue, sizeof (UINT32));
1274 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u32.MaxValue, sizeof (UINT32));
1275 CopyMem (&CurrentStatement->Step, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u32.Step, sizeof (UINT32));
1276 CurrentStatement->StorageWidth = sizeof (UINT32);
1277 Value->Type = EFI_IFR_TYPE_NUM_SIZE_32;
1278 break;
1279
1280 case EFI_IFR_NUMERIC_SIZE_8:
1281 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u64.MinValue, sizeof (UINT64));
1282 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u64.MaxValue, sizeof (UINT64));
1283 CopyMem (&CurrentStatement->Step, &((EFI_IFR_NUMERIC *) OpCodeData)->data.u64.Step, sizeof (UINT64));
1284 CurrentStatement->StorageWidth = sizeof (UINT64);
1285 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1286 break;
1287
1288 default:
1289 break;
1290 }
1291
1292 InitializeRequestElement (FormSet, CurrentStatement);
1293
1294 if ((Operand == EFI_IFR_ONE_OF_OP) && Scope != 0) {
1295 SuppressForOption = TRUE;
1296 }
1297 break;
1298
1299 case EFI_IFR_ORDERED_LIST_OP:
1300 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1301
1302 CurrentStatement->Flags = ((EFI_IFR_ORDERED_LIST *) OpCodeData)->Flags;
1303 CurrentStatement->MaxContainers = ((EFI_IFR_ORDERED_LIST *) OpCodeData)->MaxContainers;
1304 CurrentStatement->StorageWidth = (UINT16)(CurrentStatement->MaxContainers * sizeof (UINT8));
1305 InitializeRequestElement (FormSet, CurrentStatement);
1306
1307 //
1308 // No buffer type is defined in EFI_IFR_TYPE_VALUE, so a Configuration Driver
1309 // has to use FormBrowser2.Callback() to retrieve the uncommited data for
1310 // an interactive orderedlist (i.e. with EFI_IFR_FLAG_CALLBACK flag set).
1311 //
1312 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_OTHER;
1313 CurrentStatement->BufferValue = AllocateZeroPool (CurrentStatement->StorageWidth);
1314
1315 if (Scope != 0) {
1316 SuppressForOption = TRUE;
1317 }
1318 break;
1319
1320 case EFI_IFR_CHECKBOX_OP:
1321 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1322
1323 CurrentStatement->Flags = ((EFI_IFR_CHECKBOX *) OpCodeData)->Flags;
1324 CurrentStatement->StorageWidth = sizeof (BOOLEAN);
1325 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_BOOLEAN;
1326
1327 InitializeRequestElement (FormSet, CurrentStatement);
1328
1329 break;
1330
1331 case EFI_IFR_STRING_OP:
1332 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1333
1334 //
1335 // MinSize is the minimum number of characters that can be accepted for this opcode,
1336 // MaxSize is the maximum number of characters that can be accepted for this opcode.
1337 // The characters are stored as Unicode, so the storage width should multiply 2.
1338 //
1339 CurrentStatement->Minimum = ((EFI_IFR_STRING *) OpCodeData)->MinSize;
1340 CurrentStatement->Maximum = ((EFI_IFR_STRING *) OpCodeData)->MaxSize;
1341 CurrentStatement->StorageWidth = (UINT16)((UINTN) CurrentStatement->Maximum * sizeof (CHAR16));
1342 CurrentStatement->Flags = ((EFI_IFR_STRING *) OpCodeData)->Flags;
1343
1344 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_STRING;
1345 CurrentStatement->BufferValue = AllocateZeroPool (CurrentStatement->StorageWidth + sizeof (CHAR16));
1346
1347 InitializeRequestElement (FormSet, CurrentStatement);
1348 break;
1349
1350 case EFI_IFR_PASSWORD_OP:
1351 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1352
1353 //
1354 // MinSize is the minimum number of characters that can be accepted for this opcode,
1355 // MaxSize is the maximum number of characters that can be accepted for this opcode.
1356 // The characters are stored as Unicode, so the storage width should multiply 2.
1357 //
1358 CopyMem (&CurrentStatement->Minimum, &((EFI_IFR_PASSWORD *) OpCodeData)->MinSize, sizeof (UINT16));
1359 CopyMem (&CurrentStatement->Maximum, &((EFI_IFR_PASSWORD *) OpCodeData)->MaxSize, sizeof (UINT16));
1360 CurrentStatement->StorageWidth = (UINT16)((UINTN) CurrentStatement->Maximum * sizeof (CHAR16));
1361
1362 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_STRING;
1363 CurrentStatement->BufferValue = AllocateZeroPool ((CurrentStatement->StorageWidth + sizeof (CHAR16)));
1364
1365 InitializeRequestElement (FormSet, CurrentStatement);
1366 break;
1367
1368 case EFI_IFR_DATE_OP:
1369 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1370
1371 CurrentStatement->Flags = ((EFI_IFR_DATE *) OpCodeData)->Flags;
1372 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_DATE;
1373
1374 if ((CurrentStatement->Flags & EFI_QF_DATE_STORAGE) == QF_DATE_STORAGE_NORMAL) {
1375 CurrentStatement->StorageWidth = sizeof (EFI_HII_DATE);
1376
1377 InitializeRequestElement (FormSet, CurrentStatement);
1378 } else {
1379 //
1380 // Don't assign storage for RTC type of date/time
1381 //
1382 CurrentStatement->Storage = NULL;
1383 CurrentStatement->StorageWidth = 0;
1384 }
1385 break;
1386
1387 case EFI_IFR_TIME_OP:
1388 CurrentStatement = CreateQuestion (OpCodeData, FormSet, CurrentForm);
1389
1390 CurrentStatement->Flags = ((EFI_IFR_TIME *) OpCodeData)->Flags;
1391 CurrentStatement->HiiValue.Type = EFI_IFR_TYPE_TIME;
1392
1393 if ((CurrentStatement->Flags & QF_TIME_STORAGE) == QF_TIME_STORAGE_NORMAL) {
1394 CurrentStatement->StorageWidth = sizeof (EFI_IFR_TIME);
1395
1396 InitializeRequestElement (FormSet, CurrentStatement);
1397 } else {
1398 //
1399 // Don't assign storage for RTC type of date/time
1400 //
1401 CurrentStatement->Storage = NULL;
1402 CurrentStatement->StorageWidth = 0;
1403 }
1404 break;
1405
1406 //
1407 // Default
1408 //
1409 case EFI_IFR_DEFAULT_OP:
1410 //
1411 // EFI_IFR_DEFAULT appear in scope of a Question,
1412 // It creates a default value for the current question.
1413 // A Question may have more than one Default value which have different default types.
1414 //
1415 CurrentDefault = AllocateZeroPool (sizeof (QUESTION_DEFAULT));
1416 ASSERT (CurrentDefault != NULL);
1417 CurrentDefault->Signature = QUESTION_DEFAULT_SIGNATURE;
1418
1419 CurrentDefault->Value.Type = ((EFI_IFR_DEFAULT *) OpCodeData)->Type;
1420 CopyMem (&CurrentDefault->DefaultId, &((EFI_IFR_DEFAULT *) OpCodeData)->DefaultId, sizeof (UINT16));
1421 CopyMem (&CurrentDefault->Value.Value, &((EFI_IFR_DEFAULT *) OpCodeData)->Value, sizeof (EFI_IFR_TYPE_VALUE));
1422 ExtendValueToU64 (&CurrentDefault->Value);
1423
1424 //
1425 // Insert to Default Value list of current Question
1426 //
1427 InsertTailList (&CurrentStatement->DefaultListHead, &CurrentDefault->Link);
1428
1429 if (Scope != 0) {
1430 InScopeDefault = TRUE;
1431 }
1432 break;
1433
1434 //
1435 // Option
1436 //
1437 case EFI_IFR_ONE_OF_OPTION_OP:
1438 //
1439 // EFI_IFR_ONE_OF_OPTION appear in scope of a Question.
1440 // It create a selection for use in current Question.
1441 //
1442 CurrentOption = AllocateZeroPool (sizeof (QUESTION_OPTION));
1443 ASSERT (CurrentOption != NULL);
1444 CurrentOption->Signature = QUESTION_OPTION_SIGNATURE;
1445
1446 CurrentOption->Flags = ((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Flags;
1447 CurrentOption->Value.Type = ((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Type;
1448 CopyMem (&CurrentOption->Text, &((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Option, sizeof (EFI_STRING_ID));
1449 CopyMem (&CurrentOption->Value.Value, &((EFI_IFR_ONE_OF_OPTION *) OpCodeData)->Value, sizeof (EFI_IFR_TYPE_VALUE));
1450 ExtendValueToU64 (&CurrentOption->Value);
1451
1452 if (InScopeOptionSuppress) {
1453 CurrentOption->SuppressExpression = OptionSuppressExpression;
1454 }
1455
1456 //
1457 // Insert to Option list of current Question
1458 //
1459 InsertTailList (&CurrentStatement->OptionListHead, &CurrentOption->Link);
1460 break;
1461
1462 //
1463 // Conditional
1464 //
1465 case EFI_IFR_NO_SUBMIT_IF_OP:
1466 case EFI_IFR_INCONSISTENT_IF_OP:
1467 //
1468 // Create an Expression node
1469 //
1470 CurrentExpression = CreateExpression (CurrentForm);
1471 CopyMem (&CurrentExpression->Error, &((EFI_IFR_INCONSISTENT_IF *) OpCodeData)->Error, sizeof (EFI_STRING_ID));
1472
1473 if (Operand == EFI_IFR_NO_SUBMIT_IF_OP) {
1474 CurrentExpression->Type = EFI_HII_EXPRESSION_NO_SUBMIT_IF;
1475 InsertTailList (&CurrentStatement->NoSubmitListHead, &CurrentExpression->Link);
1476 } else {
1477 CurrentExpression->Type = EFI_HII_EXPRESSION_INCONSISTENT_IF;
1478 InsertTailList (&CurrentStatement->InconsistentListHead, &CurrentExpression->Link);
1479 }
1480 break;
1481
1482 case EFI_IFR_SUPPRESS_IF_OP:
1483 //
1484 // Question and Option will appear in scope of this OpCode
1485 //
1486 CurrentExpression = CreateExpression (CurrentForm);
1487 CurrentExpression->Type = EFI_HII_EXPRESSION_SUPPRESS_IF;
1488 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1489
1490 if (SuppressForOption) {
1491 InScopeOptionSuppress = TRUE;
1492 OptionSuppressExpression = CurrentExpression;
1493 } else {
1494 mInScopeSuppress = TRUE;
1495 mSuppressExpression = CurrentExpression;
1496 }
1497 break;
1498
1499 case EFI_IFR_GRAY_OUT_IF_OP:
1500 //
1501 // Questions will appear in scope of this OpCode
1502 //
1503 CurrentExpression = CreateExpression (CurrentForm);
1504 CurrentExpression->Type = EFI_HII_EXPRESSION_GRAY_OUT_IF;
1505 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1506
1507 mInScopeGrayOut = TRUE;
1508 mGrayOutExpression = CurrentExpression;
1509 break;
1510
1511 case EFI_IFR_DISABLE_IF_OP:
1512 //
1513 // The DisableIf expression should only rely on constant, so it could be
1514 // evaluated at initialization and it will not be queued
1515 //
1516 CurrentExpression = AllocateZeroPool (sizeof (FORM_EXPRESSION));
1517 ASSERT (CurrentExpression != NULL);
1518 CurrentExpression->Signature = FORM_EXPRESSION_SIGNATURE;
1519 CurrentExpression->Type = EFI_HII_EXPRESSION_DISABLE_IF;
1520 InitializeListHead (&CurrentExpression->OpCodeListHead);
1521
1522 if (CurrentForm != NULL) {
1523 //
1524 // This is DisableIf for Question, enqueue it to Form expression list
1525 //
1526 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1527 }
1528
1529 mDisableExpression = CurrentExpression;
1530 mInScopeDisable = TRUE;
1531 OpCodeDisabled = FALSE;
1532
1533 //
1534 // Take a look at next OpCode to see whether current expression consists
1535 // of single OpCode
1536 //
1537 if (((EFI_IFR_OP_HEADER *) (OpCodeData + OpCodeLength))->Scope == 0) {
1538 SingleOpCodeExpression = TRUE;
1539 }
1540 break;
1541
1542 //
1543 // Expression
1544 //
1545 case EFI_IFR_VALUE_OP:
1546 CurrentExpression = CreateExpression (CurrentForm);
1547 CurrentExpression->Type = EFI_HII_EXPRESSION_VALUE;
1548 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1549
1550 if (InScopeDefault) {
1551 //
1552 // Used for default (EFI_IFR_DEFAULT)
1553 //
1554 CurrentDefault->ValueExpression = CurrentExpression;
1555 } else {
1556 //
1557 // If used for a question, then the question will be read-only
1558 //
1559 //
1560 // Make sure CurrentStatement is not NULL.
1561 // If it is NULL, 1) ParseOpCodes functions may parse the IFR wrongly. Or 2) the IFR
1562 // file is wrongly generated by tools such as VFR Compiler. There may be a bug in VFR Compiler.
1563 //
1564 ASSERT (CurrentStatement != NULL);
1565 CurrentStatement->ValueExpression = CurrentExpression;
1566 }
1567 break;
1568
1569 case EFI_IFR_RULE_OP:
1570 CurrentExpression = CreateExpression (CurrentForm);
1571 CurrentExpression->Type = EFI_HII_EXPRESSION_RULE;
1572
1573 CurrentExpression->RuleId = ((EFI_IFR_RULE *) OpCodeData)->RuleId;
1574 InsertTailList (&CurrentForm->ExpressionListHead, &CurrentExpression->Link);
1575 break;
1576
1577 //
1578 // Image
1579 //
1580 case EFI_IFR_IMAGE_OP:
1581 //
1582 // Get ScopeOpcode from top of stack
1583 //
1584 PopScope (&ScopeOpCode);
1585 PushScope (ScopeOpCode);
1586
1587 switch (ScopeOpCode) {
1588 case EFI_IFR_FORM_SET_OP:
1589 ImageId = &FormSet->ImageId;
1590 break;
1591
1592 case EFI_IFR_FORM_OP:
1593 ASSERT (CurrentForm != NULL);
1594 ImageId = &CurrentForm->ImageId;
1595 break;
1596
1597 case EFI_IFR_ONE_OF_OPTION_OP:
1598 ImageId = &CurrentOption->ImageId;
1599 break;
1600
1601 default:
1602 //
1603 // Make sure CurrentStatement is not NULL.
1604 // If it is NULL, 1) ParseOpCodes functions may parse the IFR wrongly. Or 2) the IFR
1605 // file is wrongly generated by tools such as VFR Compiler.
1606 //
1607 ASSERT (CurrentStatement != NULL);
1608 ImageId = &CurrentStatement->ImageId;
1609 break;
1610 }
1611
1612 ASSERT (ImageId != NULL);
1613 CopyMem (ImageId, &((EFI_IFR_IMAGE *) OpCodeData)->Id, sizeof (EFI_IMAGE_ID));
1614 break;
1615
1616 //
1617 // Refresh
1618 //
1619 case EFI_IFR_REFRESH_OP:
1620 ASSERT (CurrentStatement != NULL);
1621 CurrentStatement->RefreshInterval = ((EFI_IFR_REFRESH *) OpCodeData)->RefreshInterval;
1622 break;
1623
1624 //
1625 // Vendor specific
1626 //
1627 case EFI_IFR_GUID_OP:
1628 if (CompareGuid (&gEfiIfrTianoGuid, (EFI_GUID *)(OpCodeData + sizeof (EFI_IFR_OP_HEADER)))) {
1629 //
1630 // Tiano specific GUIDed opcodes
1631 //
1632 switch (((EFI_IFR_GUID_LABEL *) OpCodeData)->ExtendOpCode) {
1633 case EFI_IFR_EXTEND_OP_LABEL:
1634 //
1635 // just ignore label
1636 //
1637 break;
1638
1639 case EFI_IFR_EXTEND_OP_BANNER:
1640 //
1641 // By SubClass to get Banner Data from Front Page
1642 //
1643 if (FormSet->SubClass == EFI_FRONT_PAGE_SUBCLASS) {
1644 CopyMem (
1645 &gBannerData->Banner[((EFI_IFR_GUID_BANNER *) OpCodeData)->LineNumber][
1646 ((EFI_IFR_GUID_BANNER *) OpCodeData)->Alignment],
1647 &((EFI_IFR_GUID_BANNER *) OpCodeData)->Title,
1648 sizeof (EFI_STRING_ID)
1649 );
1650 }
1651 break;
1652
1653 case EFI_IFR_EXTEND_OP_CLASS:
1654 CopyMem (&FormSet->Class, &((EFI_IFR_GUID_CLASS *) OpCodeData)->Class, sizeof (UINT16));
1655 break;
1656
1657 case EFI_IFR_EXTEND_OP_SUBCLASS:
1658 CopyMem (&FormSet->SubClass, &((EFI_IFR_GUID_SUBCLASS *) OpCodeData)->SubClass, sizeof (UINT16));
1659 break;
1660
1661 default:
1662 break;
1663 }
1664 }
1665
1666 break;
1667
1668 //
1669 // Scope End
1670 //
1671 case EFI_IFR_END_OP:
1672 Status = PopScope (&ScopeOpCode);
1673 if (EFI_ERROR (Status)) {
1674 ResetScopeStack ();
1675 return Status;
1676 }
1677
1678 switch (ScopeOpCode) {
1679 case EFI_IFR_FORM_SET_OP:
1680 //
1681 // End of FormSet, update FormSet IFR binary length
1682 // to stop parsing substantial OpCodes
1683 //
1684 FormSet->IfrBinaryLength = OpCodeOffset;
1685 break;
1686
1687 case EFI_IFR_FORM_OP:
1688 //
1689 // End of Form
1690 //
1691 CurrentForm = NULL;
1692 break;
1693
1694 case EFI_IFR_ONE_OF_OPTION_OP:
1695 //
1696 // End of Option
1697 //
1698 CurrentOption = NULL;
1699 break;
1700
1701 case EFI_IFR_SUBTITLE_OP:
1702 mInScopeSubtitle = FALSE;
1703 break;
1704
1705 case EFI_IFR_NO_SUBMIT_IF_OP:
1706 case EFI_IFR_INCONSISTENT_IF_OP:
1707 //
1708 // Ignore end of EFI_IFR_NO_SUBMIT_IF and EFI_IFR_INCONSISTENT_IF
1709 //
1710 break;
1711
1712 case EFI_IFR_SUPPRESS_IF_OP:
1713 if (SuppressForOption) {
1714 InScopeOptionSuppress = FALSE;
1715 } else {
1716 mInScopeSuppress = FALSE;
1717 }
1718 break;
1719
1720 case EFI_IFR_GRAY_OUT_IF_OP:
1721 mInScopeGrayOut = FALSE;
1722 break;
1723
1724 case EFI_IFR_DISABLE_IF_OP:
1725 mInScopeDisable = FALSE;
1726 OpCodeDisabled = FALSE;
1727 break;
1728
1729 case EFI_IFR_ONE_OF_OP:
1730 case EFI_IFR_ORDERED_LIST_OP:
1731 SuppressForOption = FALSE;
1732 break;
1733
1734 case EFI_IFR_DEFAULT_OP:
1735 InScopeDefault = FALSE;
1736 break;
1737
1738 default:
1739 if (IsExpressionOpCode (ScopeOpCode)) {
1740 if (mInScopeDisable && CurrentForm == NULL) {
1741 //
1742 // This is DisableIf expression for Form, it should be a constant expression
1743 //
1744 Status = EvaluateExpression (FormSet, CurrentForm, CurrentExpression);
1745 if (EFI_ERROR (Status)) {
1746 return Status;
1747 }
1748
1749 ASSERT (CurrentExpression != NULL);
1750 if (CurrentExpression->Result.Type != EFI_IFR_TYPE_BOOLEAN) {
1751 return EFI_INVALID_PARAMETER;
1752 }
1753
1754 OpCodeDisabled = CurrentExpression->Result.Value.b;
1755 //
1756 // DisableIf Expression is only used once and not quequed, free it
1757 //
1758 DestroyExpression (CurrentExpression);
1759 }
1760
1761 //
1762 // End of current Expression
1763 //
1764 CurrentExpression = NULL;
1765 }
1766 break;
1767 }
1768 break;
1769
1770 default:
1771 break;
1772 }
1773 }
1774
1775 return EFI_SUCCESS;
1776 }
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