MdeModulePkg: Add match2 opcode support in SetupBrowserDxe and sample code in DriverS...
[mirror_edk2.git] / MdeModulePkg / Universal / DriverSampleDxe / DriverSample.c
1 /** @file
2 This is an example of how a driver might export data to the HII protocol to be
3 later utilized by the Setup Protocol
4
5 Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
10
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14 **/
15
16
17 #include "DriverSample.h"
18
19 #define DISPLAY_ONLY_MY_ITEM 0x0002
20
21 CHAR16 VariableName[] = L"MyIfrNVData";
22 CHAR16 MyEfiVar[] = L"MyEfiVar";
23 EFI_HANDLE DriverHandle[2] = {NULL, NULL};
24 DRIVER_SAMPLE_PRIVATE_DATA *PrivateData = NULL;
25 EFI_EVENT mEvent;
26
27 HII_VENDOR_DEVICE_PATH mHiiVendorDevicePath0 = {
28 {
29 {
30 HARDWARE_DEVICE_PATH,
31 HW_VENDOR_DP,
32 {
33 (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
34 (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
35 }
36 },
37 DRIVER_SAMPLE_FORMSET_GUID
38 },
39 {
40 END_DEVICE_PATH_TYPE,
41 END_ENTIRE_DEVICE_PATH_SUBTYPE,
42 {
43 (UINT8) (END_DEVICE_PATH_LENGTH),
44 (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
45 }
46 }
47 };
48
49 HII_VENDOR_DEVICE_PATH mHiiVendorDevicePath1 = {
50 {
51 {
52 HARDWARE_DEVICE_PATH,
53 HW_VENDOR_DP,
54 {
55 (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
56 (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
57 }
58 },
59 DRIVER_SAMPLE_INVENTORY_GUID
60 },
61 {
62 END_DEVICE_PATH_TYPE,
63 END_ENTIRE_DEVICE_PATH_SUBTYPE,
64 {
65 (UINT8) (END_DEVICE_PATH_LENGTH),
66 (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
67 }
68 }
69 };
70
71 /**
72 Add empty function for event process function.
73
74 @param Event The Event need to be process
75 @param Context The context of the event.
76
77 **/
78 VOID
79 EFIAPI
80 DriverSampleInternalEmptyFunction (
81 IN EFI_EVENT Event,
82 IN VOID *Context
83 )
84 {
85 }
86
87 /**
88 Notification function for keystrokes.
89
90 @param[in] KeyData The key that was pressed.
91
92 @retval EFI_SUCCESS The operation was successful.
93 **/
94 EFI_STATUS
95 EFIAPI
96 NotificationFunction(
97 IN EFI_KEY_DATA *KeyData
98 )
99 {
100 gBS->SignalEvent (mEvent);
101
102 return EFI_SUCCESS;
103 }
104
105 /**
106 Function to start monitoring for CTRL-C using SimpleTextInputEx.
107
108 @retval EFI_SUCCESS The feature is enabled.
109 @retval EFI_OUT_OF_RESOURCES There is not enough mnemory available.
110 **/
111 EFI_STATUS
112 EFIAPI
113 InternalStartMonitor(
114 VOID
115 )
116 {
117 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *SimpleEx;
118 EFI_KEY_DATA KeyData;
119 EFI_STATUS Status;
120 EFI_HANDLE *Handles;
121 UINTN HandleCount;
122 UINTN HandleIndex;
123 EFI_HANDLE NotifyHandle;
124
125 Status = gBS->LocateHandleBuffer (
126 ByProtocol,
127 &gEfiSimpleTextInputExProtocolGuid,
128 NULL,
129 &HandleCount,
130 &Handles
131 );
132 for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {
133 Status = gBS->HandleProtocol (Handles[HandleIndex], &gEfiSimpleTextInputExProtocolGuid, (VOID **) &SimpleEx);
134 ASSERT_EFI_ERROR (Status);
135
136 KeyData.KeyState.KeyToggleState = 0;
137 KeyData.Key.ScanCode = 0;
138 KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_LEFT_CONTROL_PRESSED;
139 KeyData.Key.UnicodeChar = L'c';
140
141 Status = SimpleEx->RegisterKeyNotify(
142 SimpleEx,
143 &KeyData,
144 NotificationFunction,
145 &NotifyHandle);
146 if (EFI_ERROR (Status)) {
147 break;
148 }
149
150 KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_RIGHT_CONTROL_PRESSED;
151 Status = SimpleEx->RegisterKeyNotify(
152 SimpleEx,
153 &KeyData,
154 NotificationFunction,
155 &NotifyHandle);
156 if (EFI_ERROR (Status)) {
157 break;
158 }
159 }
160
161 return EFI_SUCCESS;
162 }
163
164 /**
165 Function to stop monitoring for CTRL-C using SimpleTextInputEx.
166
167 @retval EFI_SUCCESS The feature is enabled.
168 @retval EFI_OUT_OF_RESOURCES There is not enough mnemory available.
169 **/
170 EFI_STATUS
171 EFIAPI
172 InternalStopMonitor(
173 VOID
174 )
175 {
176 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *SimpleEx;
177 EFI_STATUS Status;
178 EFI_HANDLE *Handles;
179 EFI_KEY_DATA KeyData;
180 UINTN HandleCount;
181 UINTN HandleIndex;
182 EFI_HANDLE NotifyHandle;
183
184 Status = gBS->LocateHandleBuffer (
185 ByProtocol,
186 &gEfiSimpleTextInputExProtocolGuid,
187 NULL,
188 &HandleCount,
189 &Handles
190 );
191 for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {
192 Status = gBS->HandleProtocol (Handles[HandleIndex], &gEfiSimpleTextInputExProtocolGuid, (VOID **) &SimpleEx);
193 ASSERT_EFI_ERROR (Status);
194
195 KeyData.KeyState.KeyToggleState = 0;
196 KeyData.Key.ScanCode = 0;
197 KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_LEFT_CONTROL_PRESSED;
198 KeyData.Key.UnicodeChar = L'c';
199
200 Status = SimpleEx->RegisterKeyNotify(
201 SimpleEx,
202 &KeyData,
203 NotificationFunction,
204 &NotifyHandle);
205 if (!EFI_ERROR (Status)) {
206 Status = SimpleEx->UnregisterKeyNotify (SimpleEx, NotifyHandle);
207 }
208
209 KeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID|EFI_RIGHT_CONTROL_PRESSED;
210 Status = SimpleEx->RegisterKeyNotify(
211 SimpleEx,
212 &KeyData,
213 NotificationFunction,
214 &NotifyHandle);
215 if (!EFI_ERROR (Status)) {
216 Status = SimpleEx->UnregisterKeyNotify (SimpleEx, NotifyHandle);
217 }
218 }
219 return EFI_SUCCESS;
220 }
221
222
223 /**
224 Encode the password using a simple algorithm.
225
226 @param Password The string to be encoded.
227 @param MaxSize The size of the string.
228
229 **/
230 VOID
231 EncodePassword (
232 IN CHAR16 *Password,
233 IN UINTN MaxSize
234 )
235 {
236 UINTN Index;
237 UINTN Loop;
238 CHAR16 *Buffer;
239 CHAR16 *Key;
240
241 Key = L"MAR10648567";
242 Buffer = AllocateZeroPool (MaxSize);
243 ASSERT (Buffer != NULL);
244
245 for (Index = 0; Key[Index] != 0; Index++) {
246 for (Loop = 0; Loop < (UINT8) (MaxSize / 2); Loop++) {
247 Buffer[Loop] = (CHAR16) (Password[Loop] ^ Key[Index]);
248 }
249 }
250
251 CopyMem (Password, Buffer, MaxSize);
252
253 FreePool (Buffer);
254 return ;
255 }
256
257 /**
258 Validate the user's password.
259
260 @param PrivateData This driver's private context data.
261 @param StringId The user's input.
262
263 @retval EFI_SUCCESS The user's input matches the password.
264 @retval EFI_NOT_READY The user's input does not match the password.
265 **/
266 EFI_STATUS
267 ValidatePassword (
268 IN DRIVER_SAMPLE_PRIVATE_DATA *PrivateData,
269 IN EFI_STRING_ID StringId
270 )
271 {
272 EFI_STATUS Status;
273 UINTN Index;
274 UINTN BufferSize;
275 UINTN PasswordMaxSize;
276 CHAR16 *Password;
277 CHAR16 *EncodedPassword;
278 BOOLEAN OldPassword;
279
280 //
281 // Get encoded password first
282 //
283 BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
284 Status = gRT->GetVariable (
285 VariableName,
286 &gDriverSampleFormSetGuid,
287 NULL,
288 &BufferSize,
289 &PrivateData->Configuration
290 );
291 if (EFI_ERROR (Status)) {
292 //
293 // Old password not exist, prompt for new password
294 //
295 return EFI_SUCCESS;
296 }
297
298 OldPassword = FALSE;
299 PasswordMaxSize = sizeof (PrivateData->Configuration.WhatIsThePassword2);
300 //
301 // Check whether we have any old password set
302 //
303 for (Index = 0; Index < PasswordMaxSize / sizeof (UINT16); Index++) {
304 if (PrivateData->Configuration.WhatIsThePassword2[Index] != 0) {
305 OldPassword = TRUE;
306 break;
307 }
308 }
309 if (!OldPassword) {
310 //
311 // Old password not exist, return EFI_SUCCESS to prompt for new password
312 //
313 return EFI_SUCCESS;
314 }
315
316 //
317 // Get user input password
318 //
319 Password = HiiGetString (PrivateData->HiiHandle[0], StringId, NULL);
320 if (Password == NULL) {
321 return EFI_NOT_READY;
322 }
323 if (StrSize (Password) > PasswordMaxSize) {
324 FreePool (Password);
325 return EFI_NOT_READY;
326 }
327
328 //
329 // Validate old password
330 //
331 EncodedPassword = AllocateZeroPool (PasswordMaxSize);
332 ASSERT (EncodedPassword != NULL);
333 StrnCpy (EncodedPassword, Password, StrLen (Password));
334 EncodePassword (EncodedPassword, StrLen (EncodedPassword) * sizeof (CHAR16));
335 if (CompareMem (EncodedPassword, PrivateData->Configuration.WhatIsThePassword2, PasswordMaxSize) != 0) {
336 //
337 // Old password mismatch, return EFI_NOT_READY to prompt for error message
338 //
339 Status = EFI_NOT_READY;
340 } else {
341 Status = EFI_SUCCESS;
342 }
343
344 FreePool (Password);
345 FreePool (EncodedPassword);
346
347 return Status;
348 }
349
350 /**
351 Encode the password using a simple algorithm.
352
353 @param PrivateData This driver's private context data.
354 @param StringId The password from User.
355
356 @retval EFI_SUCESS The operation is successful.
357 @return Other value if gRT->SetVariable () fails.
358
359 **/
360 EFI_STATUS
361 SetPassword (
362 IN DRIVER_SAMPLE_PRIVATE_DATA *PrivateData,
363 IN EFI_STRING_ID StringId
364 )
365 {
366 EFI_STATUS Status;
367 CHAR16 *Password;
368 CHAR16 *TempPassword;
369 UINTN PasswordSize;
370 DRIVER_SAMPLE_CONFIGURATION *Configuration;
371 UINTN BufferSize;
372
373 //
374 // Get Buffer Storage data from EFI variable
375 //
376 BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
377 Status = gRT->GetVariable (
378 VariableName,
379 &gDriverSampleFormSetGuid,
380 NULL,
381 &BufferSize,
382 &PrivateData->Configuration
383 );
384 if (EFI_ERROR (Status)) {
385 return Status;
386 }
387
388 //
389 // Get user input password
390 //
391 Password = PrivateData->Configuration.WhatIsThePassword2;
392 PasswordSize = sizeof (PrivateData->Configuration.WhatIsThePassword2);
393 ZeroMem (Password, PasswordSize);
394
395 TempPassword = HiiGetString (PrivateData->HiiHandle[0], StringId, NULL);
396 if (TempPassword == NULL) {
397 return EFI_NOT_READY;
398 }
399 if (StrSize (TempPassword) > PasswordSize) {
400 FreePool (TempPassword);
401 return EFI_NOT_READY;
402 }
403 StrnCpy (Password, TempPassword, StrLen (TempPassword));
404 FreePool (TempPassword);
405
406 //
407 // Retrive uncommitted data from Browser
408 //
409 Configuration = AllocateZeroPool (sizeof (DRIVER_SAMPLE_CONFIGURATION));
410 ASSERT (Configuration != NULL);
411 if (HiiGetBrowserData (&gDriverSampleFormSetGuid, VariableName, sizeof (DRIVER_SAMPLE_CONFIGURATION), (UINT8 *) Configuration)) {
412 //
413 // Update password's clear text in the screen
414 //
415 CopyMem (Configuration->PasswordClearText, Password, StrSize (Password));
416
417 //
418 // Update uncommitted data of Browser
419 //
420 HiiSetBrowserData (
421 &gDriverSampleFormSetGuid,
422 VariableName,
423 sizeof (DRIVER_SAMPLE_CONFIGURATION),
424 (UINT8 *) Configuration,
425 NULL
426 );
427 }
428
429 //
430 // Free Configuration Buffer
431 //
432 FreePool (Configuration);
433
434
435 //
436 // Set password
437 //
438 EncodePassword (Password, StrLen (Password) * 2);
439 Status = gRT->SetVariable(
440 VariableName,
441 &gDriverSampleFormSetGuid,
442 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
443 sizeof (DRIVER_SAMPLE_CONFIGURATION),
444 &PrivateData->Configuration
445 );
446 return Status;
447 }
448
449 /**
450 Update names of Name/Value storage to current language.
451
452 @param PrivateData Points to the driver private data.
453
454 @retval EFI_SUCCESS All names are successfully updated.
455 @retval EFI_NOT_FOUND Failed to get Name from HII database.
456
457 **/
458 EFI_STATUS
459 LoadNameValueNames (
460 IN DRIVER_SAMPLE_PRIVATE_DATA *PrivateData
461 )
462 {
463 UINTN Index;
464
465 //
466 // Get Name/Value name string of current language
467 //
468 for (Index = 0; Index < NAME_VALUE_NAME_NUMBER; Index++) {
469 PrivateData->NameValueName[Index] = HiiGetString (
470 PrivateData->HiiHandle[0],
471 PrivateData->NameStringId[Index],
472 NULL
473 );
474 if (PrivateData->NameValueName[Index] == NULL) {
475 return EFI_NOT_FOUND;
476 }
477 }
478
479 return EFI_SUCCESS;
480 }
481
482
483 /**
484 Get the value of <Number> in <BlockConfig> format, i.e. the value of OFFSET
485 or WIDTH or VALUE.
486 <BlockConfig> ::= 'OFFSET='<Number>&'WIDTH='<Number>&'VALUE'=<Number>
487
488 This is a internal function.
489
490 @param StringPtr String in <BlockConfig> format and points to the
491 first character of <Number>.
492 @param Number The output value. Caller takes the responsibility
493 to free memory.
494 @param Len Length of the <Number>, in characters.
495
496 @retval EFI_OUT_OF_RESOURCES Insufficient resources to store neccessary
497 structures.
498 @retval EFI_SUCCESS Value of <Number> is outputted in Number
499 successfully.
500
501 **/
502 EFI_STATUS
503 GetValueOfNumber (
504 IN EFI_STRING StringPtr,
505 OUT UINT8 **Number,
506 OUT UINTN *Len
507 )
508 {
509 EFI_STRING TmpPtr;
510 UINTN Length;
511 EFI_STRING Str;
512 UINT8 *Buf;
513 EFI_STATUS Status;
514 UINT8 DigitUint8;
515 UINTN Index;
516 CHAR16 TemStr[2];
517
518 if (StringPtr == NULL || *StringPtr == L'\0' || Number == NULL || Len == NULL) {
519 return EFI_INVALID_PARAMETER;
520 }
521
522 Buf = NULL;
523
524 TmpPtr = StringPtr;
525 while (*StringPtr != L'\0' && *StringPtr != L'&') {
526 StringPtr++;
527 }
528 *Len = StringPtr - TmpPtr;
529 Length = *Len + 1;
530
531 Str = (EFI_STRING) AllocateZeroPool (Length * sizeof (CHAR16));
532 if (Str == NULL) {
533 Status = EFI_OUT_OF_RESOURCES;
534 goto Exit;
535 }
536 CopyMem (Str, TmpPtr, *Len * sizeof (CHAR16));
537 *(Str + *Len) = L'\0';
538
539 Length = (Length + 1) / 2;
540 Buf = (UINT8 *) AllocateZeroPool (Length);
541 if (Buf == NULL) {
542 Status = EFI_OUT_OF_RESOURCES;
543 goto Exit;
544 }
545
546 Length = *Len;
547 ZeroMem (TemStr, sizeof (TemStr));
548 for (Index = 0; Index < Length; Index ++) {
549 TemStr[0] = Str[Length - Index - 1];
550 DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
551 if ((Index & 1) == 0) {
552 Buf [Index/2] = DigitUint8;
553 } else {
554 Buf [Index/2] = (UINT8) ((DigitUint8 << 4) + Buf [Index/2]);
555 }
556 }
557
558 *Number = Buf;
559 Status = EFI_SUCCESS;
560
561 Exit:
562 if (Str != NULL) {
563 FreePool (Str);
564 }
565
566 return Status;
567 }
568
569 /**
570 Create altcfg string.
571
572 @param Result The request result string.
573 @param ConfigHdr The request head info. <ConfigHdr> format.
574 @param Offset The offset of the parameter int he structure.
575 @param Width The width of the parameter.
576
577
578 @retval The string with altcfg info append at the end.
579 **/
580 EFI_STRING
581 CreateAltCfgString (
582 IN EFI_STRING Result,
583 IN EFI_STRING ConfigHdr,
584 IN UINTN Offset,
585 IN UINTN Width
586 )
587 {
588 EFI_STRING StringPtr;
589 EFI_STRING TmpStr;
590 UINTN NewLen;
591
592 NewLen = StrLen (Result);
593 //
594 // String Len = ConfigResp + AltConfig + AltConfig + 1("\0")
595 //
596 NewLen = (NewLen + ((1 + StrLen (ConfigHdr) + 8 + 4) + (8 + 4 + 7 + 4 + 7 + 4)) * 2 + 1) * sizeof (CHAR16);
597 StringPtr = AllocateZeroPool (NewLen);
598 if (StringPtr == NULL) {
599 return NULL;
600 }
601
602 TmpStr = StringPtr;
603 if (Result != NULL) {
604 StrCpy (StringPtr, Result);
605 StringPtr += StrLen (Result);
606 FreePool (Result);
607 }
608
609 UnicodeSPrint (
610 StringPtr,
611 (1 + StrLen (ConfigHdr) + 8 + 4 + 1) * sizeof (CHAR16),
612 L"&%s&ALTCFG=%04x",
613 ConfigHdr,
614 EFI_HII_DEFAULT_CLASS_STANDARD
615 );
616 StringPtr += StrLen (StringPtr);
617
618 UnicodeSPrint (
619 StringPtr,
620 (8 + 4 + 7 + 4 + 7 + 4 + 1) * sizeof (CHAR16),
621 L"&OFFSET=%04x&WIDTH=%04x&VALUE=%04x",
622 Offset,
623 Width,
624 DEFAULT_CLASS_STANDARD_VALUE
625 );
626 StringPtr += StrLen (StringPtr);
627
628 UnicodeSPrint (
629 StringPtr,
630 (1 + StrLen (ConfigHdr) + 8 + 4 + 1) * sizeof (CHAR16),
631 L"&%s&ALTCFG=%04x",
632 ConfigHdr,
633 EFI_HII_DEFAULT_CLASS_MANUFACTURING
634 );
635 StringPtr += StrLen (StringPtr);
636
637 UnicodeSPrint (
638 StringPtr,
639 (8 + 4 + 7 + 4 + 7 + 4 + 1) * sizeof (CHAR16),
640 L"&OFFSET=%04x&WIDTH=%04x&VALUE=%04x",
641 Offset,
642 Width,
643 DEFAULT_CLASS_MANUFACTURING_VALUE
644 );
645 StringPtr += StrLen (StringPtr);
646
647 return TmpStr;
648 }
649
650 /**
651 Check whether need to add the altcfg string. if need to add, add the altcfg
652 string.
653
654 @param RequestResult The request result string.
655 @param ConfigRequestHdr The request head info. <ConfigHdr> format.
656
657 **/
658 VOID
659 AppendAltCfgString (
660 IN OUT EFI_STRING *RequestResult,
661 IN EFI_STRING ConfigRequestHdr
662 )
663 {
664 EFI_STRING StringPtr;
665 UINTN Length;
666 UINT8 *TmpBuffer;
667 UINTN Offset;
668 UINTN Width;
669 UINTN BlockSize;
670 UINTN ValueOffset;
671 UINTN ValueWidth;
672 EFI_STATUS Status;
673
674 TmpBuffer = NULL;
675 StringPtr = *RequestResult;
676 StringPtr = StrStr (StringPtr, L"OFFSET");
677 BlockSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
678 ValueOffset = OFFSET_OF (DRIVER_SAMPLE_CONFIGURATION, GetDefaultValueFromAccess);
679 ValueWidth = sizeof (((DRIVER_SAMPLE_CONFIGURATION *)0)->GetDefaultValueFromAccess);
680
681 if (StringPtr == NULL) {
682 return;
683 }
684
685 while (*StringPtr != 0 && StrnCmp (StringPtr, L"OFFSET=", StrLen (L"OFFSET=")) == 0) {
686 StringPtr += StrLen (L"OFFSET=");
687 //
688 // Get Offset
689 //
690 Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
691 if (EFI_ERROR (Status)) {
692 return;
693 }
694 Offset = 0;
695 CopyMem (
696 &Offset,
697 TmpBuffer,
698 (((Length + 1) / 2) < sizeof (UINTN)) ? ((Length + 1) / 2) : sizeof (UINTN)
699 );
700 FreePool (TmpBuffer);
701
702 StringPtr += Length;
703 if (StrnCmp (StringPtr, L"&WIDTH=", StrLen (L"&WIDTH=")) != 0) {
704 return;
705 }
706 StringPtr += StrLen (L"&WIDTH=");
707
708 //
709 // Get Width
710 //
711 Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
712 if (EFI_ERROR (Status)) {
713 return;
714 }
715 Width = 0;
716 CopyMem (
717 &Width,
718 TmpBuffer,
719 (((Length + 1) / 2) < sizeof (UINTN)) ? ((Length + 1) / 2) : sizeof (UINTN)
720 );
721 FreePool (TmpBuffer);
722
723 StringPtr += Length;
724 if (StrnCmp (StringPtr, L"&VALUE=", StrLen (L"&VALUE=")) != 0) {
725 return;
726 }
727 StringPtr += StrLen (L"&VALUE=");
728
729 //
730 // Get Value
731 //
732 Status = GetValueOfNumber (StringPtr, &TmpBuffer, &Length);
733 if (EFI_ERROR (Status)) {
734 return;
735 }
736 StringPtr += Length;
737
738 //
739 // Calculate Value and convert it to hex string.
740 //
741 if (Offset + Width > BlockSize) {
742 return;
743 }
744
745 if (Offset <= ValueOffset && Offset + Width >= ValueOffset + ValueWidth) {
746 *RequestResult = CreateAltCfgString(*RequestResult, ConfigRequestHdr, ValueOffset, ValueWidth);
747 return;
748 }
749 }
750 }
751
752 /**
753 This function allows a caller to extract the current configuration for one
754 or more named elements from the target driver.
755
756 @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
757 @param Request A null-terminated Unicode string in
758 <ConfigRequest> format.
759 @param Progress On return, points to a character in the Request
760 string. Points to the string's null terminator if
761 request was successful. Points to the most recent
762 '&' before the first failing name/value pair (or
763 the beginning of the string if the failure is in
764 the first name/value pair) if the request was not
765 successful.
766 @param Results A null-terminated Unicode string in
767 <ConfigAltResp> format which has all values filled
768 in for the names in the Request string. String to
769 be allocated by the called function.
770
771 @retval EFI_SUCCESS The Results is filled with the requested values.
772 @retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
773 @retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
774 @retval EFI_NOT_FOUND Routing data doesn't match any storage in this
775 driver.
776
777 **/
778 EFI_STATUS
779 EFIAPI
780 ExtractConfig (
781 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
782 IN CONST EFI_STRING Request,
783 OUT EFI_STRING *Progress,
784 OUT EFI_STRING *Results
785 )
786 {
787 EFI_STATUS Status;
788 UINTN BufferSize;
789 DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
790 EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
791 EFI_STRING ConfigRequest;
792 EFI_STRING ConfigRequestHdr;
793 UINTN Size;
794 EFI_STRING Value;
795 UINTN ValueStrLen;
796 CHAR16 BackupChar;
797 CHAR16 *StrPointer;
798 BOOLEAN AllocatedRequest;
799
800 if (Progress == NULL || Results == NULL) {
801 return EFI_INVALID_PARAMETER;
802 }
803 //
804 // Initialize the local variables.
805 //
806 ConfigRequestHdr = NULL;
807 ConfigRequest = NULL;
808 Size = 0;
809 *Progress = Request;
810 AllocatedRequest = FALSE;
811
812 PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
813 HiiConfigRouting = PrivateData->HiiConfigRouting;
814
815 //
816 // Get Buffer Storage data from EFI variable.
817 // Try to get the current setting from variable.
818 //
819 BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
820 Status = gRT->GetVariable (
821 VariableName,
822 &gDriverSampleFormSetGuid,
823 NULL,
824 &BufferSize,
825 &PrivateData->Configuration
826 );
827 if (EFI_ERROR (Status)) {
828 return EFI_NOT_FOUND;
829 }
830
831 if (Request == NULL) {
832 //
833 // Request is set to NULL, construct full request string.
834 //
835
836 //
837 // Allocate and fill a buffer large enough to hold the <ConfigHdr> template
838 // followed by "&OFFSET=0&WIDTH=WWWWWWWWWWWWWWWW" followed by a Null-terminator
839 //
840 ConfigRequestHdr = HiiConstructConfigHdr (&gDriverSampleFormSetGuid, VariableName, PrivateData->DriverHandle[0]);
841 Size = (StrLen (ConfigRequestHdr) + 32 + 1) * sizeof (CHAR16);
842 ConfigRequest = AllocateZeroPool (Size);
843 ASSERT (ConfigRequest != NULL);
844 AllocatedRequest = TRUE;
845 UnicodeSPrint (ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", ConfigRequestHdr, (UINT64)BufferSize);
846 FreePool (ConfigRequestHdr);
847 ConfigRequestHdr = NULL;
848 } else {
849 //
850 // Check routing data in <ConfigHdr>.
851 // Note: if only one Storage is used, then this checking could be skipped.
852 //
853 if (!HiiIsConfigHdrMatch (Request, &gDriverSampleFormSetGuid, NULL)) {
854 return EFI_NOT_FOUND;
855 }
856 //
857 // Check whether request for EFI Varstore. EFI varstore get data
858 // through hii database, not support in this path.
859 //
860 if (HiiIsConfigHdrMatch(Request, &gDriverSampleFormSetGuid, MyEfiVar)) {
861 return EFI_UNSUPPORTED;
862 }
863 //
864 // Set Request to the unified request string.
865 //
866 ConfigRequest = Request;
867 //
868 // Check whether Request includes Request Element.
869 //
870 if (StrStr (Request, L"OFFSET") == NULL) {
871 //
872 // Check Request Element does exist in Reques String
873 //
874 StrPointer = StrStr (Request, L"PATH");
875 if (StrPointer == NULL) {
876 return EFI_INVALID_PARAMETER;
877 }
878 if (StrStr (StrPointer, L"&") == NULL) {
879 Size = (StrLen (Request) + 32 + 1) * sizeof (CHAR16);
880 ConfigRequest = AllocateZeroPool (Size);
881 ASSERT (ConfigRequest != NULL);
882 AllocatedRequest = TRUE;
883 UnicodeSPrint (ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", Request, (UINT64)BufferSize);
884 }
885 }
886 }
887
888 //
889 // Check if requesting Name/Value storage
890 //
891 if (StrStr (ConfigRequest, L"OFFSET") == NULL) {
892 //
893 // Update Name/Value storage Names
894 //
895 Status = LoadNameValueNames (PrivateData);
896 if (EFI_ERROR (Status)) {
897 return Status;
898 }
899
900 //
901 // Allocate memory for <ConfigResp>, e.g. Name0=0x11, Name1=0x1234, Name2="ABCD"
902 // <Request> ::=<ConfigHdr>&Name0&Name1&Name2
903 // <ConfigResp>::=<ConfigHdr>&Name0=11&Name1=1234&Name2=0041004200430044
904 //
905 BufferSize = (StrLen (ConfigRequest) +
906 1 + sizeof (PrivateData->Configuration.NameValueVar0) * 2 +
907 1 + sizeof (PrivateData->Configuration.NameValueVar1) * 2 +
908 1 + sizeof (PrivateData->Configuration.NameValueVar2) * 2 + 1) * sizeof (CHAR16);
909 *Results = AllocateZeroPool (BufferSize);
910 ASSERT (*Results != NULL);
911 StrCpy (*Results, ConfigRequest);
912 Value = *Results;
913
914 //
915 // Append value of NameValueVar0, type is UINT8
916 //
917 if ((Value = StrStr (*Results, PrivateData->NameValueName[0])) != NULL) {
918 Value += StrLen (PrivateData->NameValueName[0]);
919 ValueStrLen = ((sizeof (PrivateData->Configuration.NameValueVar0) * 2) + 1);
920 CopyMem (Value + ValueStrLen, Value, StrSize (Value));
921
922 BackupChar = Value[ValueStrLen];
923 *Value++ = L'=';
924 Value += UnicodeValueToString (
925 Value,
926 PREFIX_ZERO | RADIX_HEX,
927 PrivateData->Configuration.NameValueVar0,
928 sizeof (PrivateData->Configuration.NameValueVar0) * 2
929 );
930 *Value = BackupChar;
931 }
932
933 //
934 // Append value of NameValueVar1, type is UINT16
935 //
936 if ((Value = StrStr (*Results, PrivateData->NameValueName[1])) != NULL) {
937 Value += StrLen (PrivateData->NameValueName[1]);
938 ValueStrLen = ((sizeof (PrivateData->Configuration.NameValueVar1) * 2) + 1);
939 CopyMem (Value + ValueStrLen, Value, StrSize (Value));
940
941 BackupChar = Value[ValueStrLen];
942 *Value++ = L'=';
943 Value += UnicodeValueToString (
944 Value,
945 PREFIX_ZERO | RADIX_HEX,
946 PrivateData->Configuration.NameValueVar1,
947 sizeof (PrivateData->Configuration.NameValueVar1) * 2
948 );
949 *Value = BackupChar;
950 }
951
952 //
953 // Append value of NameValueVar2, type is CHAR16 *
954 //
955 if ((Value = StrStr (*Results, PrivateData->NameValueName[2])) != NULL) {
956 Value += StrLen (PrivateData->NameValueName[2]);
957 ValueStrLen = StrLen (PrivateData->Configuration.NameValueVar2) * 4 + 1;
958 CopyMem (Value + ValueStrLen, Value, StrSize (Value));
959
960 *Value++ = L'=';
961 //
962 // Convert Unicode String to Config String, e.g. "ABCD" => "0041004200430044"
963 //
964 StrPointer = (CHAR16 *) PrivateData->Configuration.NameValueVar2;
965 for (; *StrPointer != L'\0'; StrPointer++) {
966 Value += UnicodeValueToString (Value, PREFIX_ZERO | RADIX_HEX, *StrPointer, 4);
967 }
968 }
969
970 Status = EFI_SUCCESS;
971 } else {
972 //
973 // Convert buffer data to <ConfigResp> by helper function BlockToConfig()
974 //
975 Status = HiiConfigRouting->BlockToConfig (
976 HiiConfigRouting,
977 ConfigRequest,
978 (UINT8 *) &PrivateData->Configuration,
979 BufferSize,
980 Results,
981 Progress
982 );
983 if (!EFI_ERROR (Status)) {
984 ConfigRequestHdr = HiiConstructConfigHdr (&gDriverSampleFormSetGuid, VariableName, PrivateData->DriverHandle[0]);
985 AppendAltCfgString(Results, ConfigRequestHdr);
986 }
987 }
988
989 //
990 // Free the allocated config request string.
991 //
992 if (AllocatedRequest) {
993 FreePool (ConfigRequest);
994 }
995
996 if (ConfigRequestHdr != NULL) {
997 FreePool (ConfigRequestHdr);
998 }
999 //
1000 // Set Progress string to the original request string.
1001 //
1002 if (Request == NULL) {
1003 *Progress = NULL;
1004 } else if (StrStr (Request, L"OFFSET") == NULL) {
1005 *Progress = Request + StrLen (Request);
1006 }
1007
1008 return Status;
1009 }
1010
1011
1012 /**
1013 This function processes the results of changes in configuration.
1014
1015 @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
1016 @param Configuration A null-terminated Unicode string in <ConfigResp>
1017 format.
1018 @param Progress A pointer to a string filled in with the offset of
1019 the most recent '&' before the first failing
1020 name/value pair (or the beginning of the string if
1021 the failure is in the first name/value pair) or
1022 the terminating NULL if all was successful.
1023
1024 @retval EFI_SUCCESS The Results is processed successfully.
1025 @retval EFI_INVALID_PARAMETER Configuration is NULL.
1026 @retval EFI_NOT_FOUND Routing data doesn't match any storage in this
1027 driver.
1028
1029 **/
1030 EFI_STATUS
1031 EFIAPI
1032 RouteConfig (
1033 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
1034 IN CONST EFI_STRING Configuration,
1035 OUT EFI_STRING *Progress
1036 )
1037 {
1038 EFI_STATUS Status;
1039 UINTN BufferSize;
1040 DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
1041 EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
1042 CHAR16 *Value;
1043 CHAR16 *StrPtr;
1044 CHAR16 TemStr[5];
1045 UINT8 *DataBuffer;
1046 UINT8 DigitUint8;
1047 UINTN Index;
1048 CHAR16 *StrBuffer;
1049
1050 if (Configuration == NULL || Progress == NULL) {
1051 return EFI_INVALID_PARAMETER;
1052 }
1053
1054 PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
1055 HiiConfigRouting = PrivateData->HiiConfigRouting;
1056 *Progress = Configuration;
1057
1058 //
1059 // Check routing data in <ConfigHdr>.
1060 // Note: if only one Storage is used, then this checking could be skipped.
1061 //
1062 if (!HiiIsConfigHdrMatch (Configuration, &gDriverSampleFormSetGuid, NULL)) {
1063 return EFI_NOT_FOUND;
1064 }
1065
1066 //
1067 // Check whether request for EFI Varstore. EFI varstore get data
1068 // through hii database, not support in this path.
1069 //
1070 if (HiiIsConfigHdrMatch(Configuration, &gDriverSampleFormSetGuid, MyEfiVar)) {
1071 return EFI_UNSUPPORTED;
1072 }
1073
1074 //
1075 // Get Buffer Storage data from EFI variable
1076 //
1077 BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
1078 Status = gRT->GetVariable (
1079 VariableName,
1080 &gDriverSampleFormSetGuid,
1081 NULL,
1082 &BufferSize,
1083 &PrivateData->Configuration
1084 );
1085 if (EFI_ERROR (Status)) {
1086 return Status;
1087 }
1088
1089 //
1090 // Check if configuring Name/Value storage
1091 //
1092 if (StrStr (Configuration, L"OFFSET") == NULL) {
1093 //
1094 // Update Name/Value storage Names
1095 //
1096 Status = LoadNameValueNames (PrivateData);
1097 if (EFI_ERROR (Status)) {
1098 return Status;
1099 }
1100
1101 //
1102 // Convert value for NameValueVar0
1103 //
1104 if ((Value = StrStr (Configuration, PrivateData->NameValueName[0])) != NULL) {
1105 //
1106 // Skip "Name="
1107 //
1108 Value += StrLen (PrivateData->NameValueName[0]);
1109 Value++;
1110 //
1111 // Get Value String
1112 //
1113 StrPtr = StrStr (Value, L"&");
1114 if (StrPtr == NULL) {
1115 StrPtr = Value + StrLen (Value);
1116 }
1117 //
1118 // Convert Value to Buffer data
1119 //
1120 DataBuffer = (UINT8 *) &PrivateData->Configuration.NameValueVar0;
1121 ZeroMem (TemStr, sizeof (TemStr));
1122 for (Index = 0, StrPtr --; StrPtr >= Value; StrPtr --, Index ++) {
1123 TemStr[0] = *StrPtr;
1124 DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
1125 if ((Index & 1) == 0) {
1126 DataBuffer [Index/2] = DigitUint8;
1127 } else {
1128 DataBuffer [Index/2] = (UINT8) ((UINT8) (DigitUint8 << 4) + DataBuffer [Index/2]);
1129 }
1130 }
1131 }
1132
1133 //
1134 // Convert value for NameValueVar1
1135 //
1136 if ((Value = StrStr (Configuration, PrivateData->NameValueName[1])) != NULL) {
1137 //
1138 // Skip "Name="
1139 //
1140 Value += StrLen (PrivateData->NameValueName[1]);
1141 Value++;
1142 //
1143 // Get Value String
1144 //
1145 StrPtr = StrStr (Value, L"&");
1146 if (StrPtr == NULL) {
1147 StrPtr = Value + StrLen (Value);
1148 }
1149 //
1150 // Convert Value to Buffer data
1151 //
1152 DataBuffer = (UINT8 *) &PrivateData->Configuration.NameValueVar1;
1153 ZeroMem (TemStr, sizeof (TemStr));
1154 for (Index = 0, StrPtr --; StrPtr >= Value; StrPtr --, Index ++) {
1155 TemStr[0] = *StrPtr;
1156 DigitUint8 = (UINT8) StrHexToUint64 (TemStr);
1157 if ((Index & 1) == 0) {
1158 DataBuffer [Index/2] = DigitUint8;
1159 } else {
1160 DataBuffer [Index/2] = (UINT8) ((UINT8) (DigitUint8 << 4) + DataBuffer [Index/2]);
1161 }
1162 }
1163 }
1164
1165 //
1166 // Convert value for NameValueVar2
1167 //
1168 if ((Value = StrStr (Configuration, PrivateData->NameValueName[2])) != NULL) {
1169 //
1170 // Skip "Name="
1171 //
1172 Value += StrLen (PrivateData->NameValueName[2]);
1173 Value++;
1174 //
1175 // Get Value String
1176 //
1177 StrPtr = StrStr (Value, L"&");
1178 if (StrPtr == NULL) {
1179 StrPtr = Value + StrLen (Value);
1180 }
1181 //
1182 // Convert Config String to Unicode String, e.g "0041004200430044" => "ABCD"
1183 //
1184 StrBuffer = (CHAR16 *) PrivateData->Configuration.NameValueVar2;
1185 ZeroMem (TemStr, sizeof (TemStr));
1186 while (Value < StrPtr) {
1187 StrnCpy (TemStr, Value, 4);
1188 *(StrBuffer++) = (CHAR16) StrHexToUint64 (TemStr);
1189 Value += 4;
1190 }
1191 *StrBuffer = L'\0';
1192 }
1193
1194 //
1195 // Store Buffer Storage back to EFI variable
1196 //
1197 Status = gRT->SetVariable(
1198 VariableName,
1199 &gDriverSampleFormSetGuid,
1200 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
1201 sizeof (DRIVER_SAMPLE_CONFIGURATION),
1202 &PrivateData->Configuration
1203 );
1204
1205 return Status;
1206 }
1207
1208 //
1209 // Convert <ConfigResp> to buffer data by helper function ConfigToBlock()
1210 //
1211 BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
1212 Status = HiiConfigRouting->ConfigToBlock (
1213 HiiConfigRouting,
1214 Configuration,
1215 (UINT8 *) &PrivateData->Configuration,
1216 &BufferSize,
1217 Progress
1218 );
1219 if (EFI_ERROR (Status)) {
1220 return Status;
1221 }
1222
1223 //
1224 // Store Buffer Storage back to EFI variable
1225 //
1226 Status = gRT->SetVariable(
1227 VariableName,
1228 &gDriverSampleFormSetGuid,
1229 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
1230 sizeof (DRIVER_SAMPLE_CONFIGURATION),
1231 &PrivateData->Configuration
1232 );
1233
1234 return Status;
1235 }
1236
1237
1238 /**
1239 This function processes the results of changes in configuration.
1240
1241 @param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
1242 @param Action Specifies the type of action taken by the browser.
1243 @param QuestionId A unique value which is sent to the original
1244 exporting driver so that it can identify the type
1245 of data to expect.
1246 @param Type The type of value for the question.
1247 @param Value A pointer to the data being sent to the original
1248 exporting driver.
1249 @param ActionRequest On return, points to the action requested by the
1250 callback function.
1251
1252 @retval EFI_SUCCESS The callback successfully handled the action.
1253 @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
1254 variable and its data.
1255 @retval EFI_DEVICE_ERROR The variable could not be saved.
1256 @retval EFI_UNSUPPORTED The specified Action is not supported by the
1257 callback.
1258
1259 **/
1260 EFI_STATUS
1261 EFIAPI
1262 DriverCallback (
1263 IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
1264 IN EFI_BROWSER_ACTION Action,
1265 IN EFI_QUESTION_ID QuestionId,
1266 IN UINT8 Type,
1267 IN EFI_IFR_TYPE_VALUE *Value,
1268 OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
1269 )
1270 {
1271 DRIVER_SAMPLE_PRIVATE_DATA *PrivateData;
1272 EFI_STATUS Status;
1273 VOID *StartOpCodeHandle;
1274 VOID *OptionsOpCodeHandle;
1275 EFI_IFR_GUID_LABEL *StartLabel;
1276 VOID *EndOpCodeHandle;
1277 EFI_IFR_GUID_LABEL *EndLabel;
1278 EFI_INPUT_KEY Key;
1279 DRIVER_SAMPLE_CONFIGURATION *Configuration;
1280 MY_EFI_VARSTORE_DATA *EfiData;
1281 EFI_FORM_ID FormId;
1282
1283 if (((Value == NULL) && (Action != EFI_BROWSER_ACTION_FORM_OPEN) && (Action != EFI_BROWSER_ACTION_FORM_CLOSE))||
1284 (ActionRequest == NULL)) {
1285 return EFI_INVALID_PARAMETER;
1286 }
1287
1288
1289 FormId = 0;
1290 Status = EFI_SUCCESS;
1291 PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
1292
1293 switch (Action) {
1294 case EFI_BROWSER_ACTION_FORM_OPEN:
1295 {
1296 if (QuestionId == 0x1234) {
1297 //
1298 // Sample CallBack for UEFI FORM_OPEN action:
1299 // Add Save action into Form 3 when Form 1 is opened.
1300 // This will be done only in FORM_OPEN CallBack of question with ID 0x1234 from Form 1.
1301 //
1302 PrivateData = DRIVER_SAMPLE_PRIVATE_FROM_THIS (This);
1303
1304 //
1305 // Initialize the container for dynamic opcodes
1306 //
1307 StartOpCodeHandle = HiiAllocateOpCodeHandle ();
1308 ASSERT (StartOpCodeHandle != NULL);
1309
1310 //
1311 // Create Hii Extend Label OpCode as the start opcode
1312 //
1313 StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
1314 StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
1315 StartLabel->Number = LABEL_UPDATE2;
1316
1317 HiiCreateActionOpCode (
1318 StartOpCodeHandle, // Container for dynamic created opcodes
1319 0x1238, // Question ID
1320 STRING_TOKEN(STR_SAVE_TEXT), // Prompt text
1321 STRING_TOKEN(STR_SAVE_TEXT), // Help text
1322 EFI_IFR_FLAG_CALLBACK, // Question flag
1323 0 // Action String ID
1324 );
1325
1326 HiiUpdateForm (
1327 PrivateData->HiiHandle[0], // HII handle
1328 &gDriverSampleFormSetGuid, // Formset GUID
1329 0x3, // Form ID
1330 StartOpCodeHandle, // Label for where to insert opcodes
1331 NULL // Insert data
1332 );
1333
1334 HiiFreeOpCodeHandle (StartOpCodeHandle);
1335 }
1336
1337 if (QuestionId == 0x1247) {
1338 Status = InternalStartMonitor ();
1339 ASSERT_EFI_ERROR (Status);
1340 }
1341 }
1342 break;
1343
1344 case EFI_BROWSER_ACTION_FORM_CLOSE:
1345 {
1346 if (QuestionId == 0x5678) {
1347 //
1348 // Sample CallBack for UEFI FORM_CLOSE action:
1349 // Show up a pop-up to specify Form 3 will be closed when exit Form 3.
1350 //
1351 do {
1352 CreatePopUp (
1353 EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE,
1354 &Key,
1355 L"",
1356 L"You are going to leave third Form!",
1357 L"Press ESC or ENTER to continue ...",
1358 L"",
1359 NULL
1360 );
1361 } while ((Key.ScanCode != SCAN_ESC) && (Key.UnicodeChar != CHAR_CARRIAGE_RETURN));
1362 }
1363
1364 if (QuestionId == 0x1247) {
1365 Status = InternalStopMonitor ();
1366 ASSERT_EFI_ERROR (Status);
1367 }
1368 }
1369 break;
1370
1371 case EFI_BROWSER_ACTION_RETRIEVE:
1372 {
1373 if (QuestionId == 0x1248) {
1374 {
1375 if (Type != EFI_IFR_TYPE_REF) {
1376 return EFI_INVALID_PARAMETER;
1377 }
1378
1379 Value->ref.FormId = 0x3;
1380 }
1381 }
1382 }
1383 break;
1384
1385 case EFI_BROWSER_ACTION_DEFAULT_STANDARD:
1386 {
1387 switch (QuestionId) {
1388 case 0x1240:
1389 Value->u8 = DEFAULT_CLASS_STANDARD_VALUE;
1390 break;
1391
1392 default:
1393 Status = EFI_UNSUPPORTED;
1394 break;
1395 }
1396 }
1397 break;
1398
1399 case EFI_BROWSER_ACTION_DEFAULT_MANUFACTURING:
1400 {
1401 switch (QuestionId) {
1402 case 0x1240:
1403 Value->u8 = DEFAULT_CLASS_MANUFACTURING_VALUE;
1404 break;
1405
1406 default:
1407 Status = EFI_UNSUPPORTED;
1408 break;
1409 }
1410 }
1411 break;
1412
1413 case EFI_BROWSER_ACTION_CHANGING:
1414 {
1415 switch (QuestionId) {
1416 case 0x1249:
1417 {
1418 if (Type != EFI_IFR_TYPE_REF) {
1419 return EFI_INVALID_PARAMETER;
1420 }
1421
1422 Value->ref.FormId = 0x1234;
1423 }
1424 break;
1425 case 0x1234:
1426 //
1427 // Initialize the container for dynamic opcodes
1428 //
1429 StartOpCodeHandle = HiiAllocateOpCodeHandle ();
1430 ASSERT (StartOpCodeHandle != NULL);
1431
1432 EndOpCodeHandle = HiiAllocateOpCodeHandle ();
1433 ASSERT (EndOpCodeHandle != NULL);
1434
1435 //
1436 // Create Hii Extend Label OpCode as the start opcode
1437 //
1438 StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
1439 StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
1440 StartLabel->Number = LABEL_UPDATE1;
1441
1442 //
1443 // Create Hii Extend Label OpCode as the end opcode
1444 //
1445 EndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (EndOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
1446 EndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
1447 EndLabel->Number = LABEL_END;
1448
1449 HiiCreateActionOpCode (
1450 StartOpCodeHandle, // Container for dynamic created opcodes
1451 0x1237, // Question ID
1452 STRING_TOKEN(STR_EXIT_TEXT), // Prompt text
1453 STRING_TOKEN(STR_EXIT_TEXT), // Help text
1454 EFI_IFR_FLAG_CALLBACK, // Question flag
1455 0 // Action String ID
1456 );
1457
1458 //
1459 // Create Option OpCode
1460 //
1461 OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
1462 ASSERT (OptionsOpCodeHandle != NULL);
1463
1464 HiiCreateOneOfOptionOpCode (
1465 OptionsOpCodeHandle,
1466 STRING_TOKEN (STR_BOOT_OPTION1),
1467 0,
1468 EFI_IFR_NUMERIC_SIZE_1,
1469 1
1470 );
1471
1472 HiiCreateOneOfOptionOpCode (
1473 OptionsOpCodeHandle,
1474 STRING_TOKEN (STR_BOOT_OPTION2),
1475 0,
1476 EFI_IFR_NUMERIC_SIZE_1,
1477 2
1478 );
1479
1480 //
1481 // Prepare initial value for the dynamic created oneof Question
1482 //
1483 PrivateData->Configuration.DynamicOneof = 2;
1484 Status = gRT->SetVariable(
1485 VariableName,
1486 &gDriverSampleFormSetGuid,
1487 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
1488 sizeof (DRIVER_SAMPLE_CONFIGURATION),
1489 &PrivateData->Configuration
1490 );
1491
1492 //
1493 // Set initial vlaue of dynamic created oneof Question in Form Browser
1494 //
1495 Configuration = AllocateZeroPool (sizeof (DRIVER_SAMPLE_CONFIGURATION));
1496 ASSERT (Configuration != NULL);
1497 if (HiiGetBrowserData (&gDriverSampleFormSetGuid, VariableName, sizeof (DRIVER_SAMPLE_CONFIGURATION), (UINT8 *) Configuration)) {
1498 Configuration->DynamicOneof = 2;
1499
1500 //
1501 // Update uncommitted data of Browser
1502 //
1503 HiiSetBrowserData (
1504 &gDriverSampleFormSetGuid,
1505 VariableName,
1506 sizeof (DRIVER_SAMPLE_CONFIGURATION),
1507 (UINT8 *) Configuration,
1508 NULL
1509 );
1510 }
1511 FreePool (Configuration);
1512
1513 HiiCreateOneOfOpCode (
1514 StartOpCodeHandle, // Container for dynamic created opcodes
1515 0x8001, // Question ID (or call it "key")
1516 CONFIGURATION_VARSTORE_ID, // VarStore ID
1517 (UINT16) DYNAMIC_ONE_OF_VAR_OFFSET, // Offset in Buffer Storage
1518 STRING_TOKEN (STR_ONE_OF_PROMPT), // Question prompt text
1519 STRING_TOKEN (STR_ONE_OF_HELP), // Question help text
1520 EFI_IFR_FLAG_CALLBACK, // Question flag
1521 EFI_IFR_NUMERIC_SIZE_1, // Data type of Question Value
1522 OptionsOpCodeHandle, // Option Opcode list
1523 NULL // Default Opcode is NULl
1524 );
1525
1526 HiiCreateOrderedListOpCode (
1527 StartOpCodeHandle, // Container for dynamic created opcodes
1528 0x8002, // Question ID
1529 CONFIGURATION_VARSTORE_ID, // VarStore ID
1530 (UINT16) DYNAMIC_ORDERED_LIST_VAR_OFFSET, // Offset in Buffer Storage
1531 STRING_TOKEN (STR_BOOT_OPTIONS), // Question prompt text
1532 STRING_TOKEN (STR_BOOT_OPTIONS), // Question help text
1533 EFI_IFR_FLAG_RESET_REQUIRED, // Question flag
1534 0, // Ordered list flag, e.g. EFI_IFR_UNIQUE_SET
1535 EFI_IFR_NUMERIC_SIZE_1, // Data type of Question value
1536 5, // Maximum container
1537 OptionsOpCodeHandle, // Option Opcode list
1538 NULL // Default Opcode is NULl
1539 );
1540
1541 HiiCreateTextOpCode (
1542 StartOpCodeHandle,
1543 STRING_TOKEN(STR_TEXT_SAMPLE_HELP),
1544 STRING_TOKEN(STR_TEXT_SAMPLE_HELP),
1545 STRING_TOKEN(STR_TEXT_SAMPLE_STRING)
1546 );
1547
1548 HiiCreateDateOpCode (
1549 StartOpCodeHandle,
1550 0x8004,
1551 0x0,
1552 0x0,
1553 STRING_TOKEN(STR_DATE_SAMPLE_HELP),
1554 STRING_TOKEN(STR_DATE_SAMPLE_HELP),
1555 0,
1556 QF_DATE_STORAGE_TIME,
1557 NULL
1558 );
1559
1560 HiiCreateTimeOpCode (
1561 StartOpCodeHandle,
1562 0x8005,
1563 0x0,
1564 0x0,
1565 STRING_TOKEN(STR_TIME_SAMPLE_HELP),
1566 STRING_TOKEN(STR_TIME_SAMPLE_HELP),
1567 0,
1568 QF_TIME_STORAGE_TIME,
1569 NULL
1570 );
1571
1572 HiiCreateGotoOpCode (
1573 StartOpCodeHandle, // Container for dynamic created opcodes
1574 1, // Target Form ID
1575 STRING_TOKEN (STR_GOTO_FORM1), // Prompt text
1576 STRING_TOKEN (STR_GOTO_HELP), // Help text
1577 0, // Question flag
1578 0x8003 // Question ID
1579 );
1580
1581 HiiUpdateForm (
1582 PrivateData->HiiHandle[0], // HII handle
1583 &gDriverSampleFormSetGuid, // Formset GUID
1584 0x1234, // Form ID
1585 StartOpCodeHandle, // Label for where to insert opcodes
1586 EndOpCodeHandle // Replace data
1587 );
1588
1589 HiiFreeOpCodeHandle (StartOpCodeHandle);
1590 HiiFreeOpCodeHandle (OptionsOpCodeHandle);
1591 HiiFreeOpCodeHandle (EndOpCodeHandle);
1592 break;
1593
1594 case 0x5678:
1595 case 0x1247:
1596 //
1597 // We will reach here once the Question is refreshed
1598 //
1599
1600 //
1601 // Initialize the container for dynamic opcodes
1602 //
1603 StartOpCodeHandle = HiiAllocateOpCodeHandle ();
1604 ASSERT (StartOpCodeHandle != NULL);
1605
1606 //
1607 // Create Hii Extend Label OpCode as the start opcode
1608 //
1609 StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
1610 StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
1611 if (QuestionId == 0x5678) {
1612 StartLabel->Number = LABEL_UPDATE2;
1613 FormId = 0x03;
1614 PrivateData->Configuration.DynamicRefresh++;
1615 } else if (QuestionId == 0x1247 ) {
1616 StartLabel->Number = LABEL_UPDATE3;
1617 FormId = 0x06;
1618 PrivateData->Configuration.RefreshGuidCount++;
1619 }
1620
1621 HiiCreateActionOpCode (
1622 StartOpCodeHandle, // Container for dynamic created opcodes
1623 0x1237, // Question ID
1624 STRING_TOKEN(STR_EXIT_TEXT), // Prompt text
1625 STRING_TOKEN(STR_EXIT_TEXT), // Help text
1626 EFI_IFR_FLAG_CALLBACK, // Question flag
1627 0 // Action String ID
1628 );
1629
1630 HiiUpdateForm (
1631 PrivateData->HiiHandle[0], // HII handle
1632 &gDriverSampleFormSetGuid, // Formset GUID
1633 FormId, // Form ID
1634 StartOpCodeHandle, // Label for where to insert opcodes
1635 NULL // Insert data
1636 );
1637
1638 HiiFreeOpCodeHandle (StartOpCodeHandle);
1639
1640 //
1641 // Refresh the Question value
1642 //
1643 Status = gRT->SetVariable(
1644 VariableName,
1645 &gDriverSampleFormSetGuid,
1646 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
1647 sizeof (DRIVER_SAMPLE_CONFIGURATION),
1648 &PrivateData->Configuration
1649 );
1650
1651 if (QuestionId == 0x5678) {
1652 //
1653 // Update uncommitted data of Browser
1654 //
1655 EfiData = AllocateZeroPool (sizeof (MY_EFI_VARSTORE_DATA));
1656 ASSERT (EfiData != NULL);
1657 if (HiiGetBrowserData (&gDriverSampleFormSetGuid, MyEfiVar, sizeof (MY_EFI_VARSTORE_DATA), (UINT8 *) EfiData)) {
1658 EfiData->Field8 = 111;
1659 HiiSetBrowserData (
1660 &gDriverSampleFormSetGuid,
1661 MyEfiVar,
1662 sizeof (MY_EFI_VARSTORE_DATA),
1663 (UINT8 *) EfiData,
1664 NULL
1665 );
1666 }
1667 FreePool (EfiData);
1668 }
1669 break;
1670
1671 case 0x2000:
1672 //
1673 // Only used to update the state.
1674 //
1675 if ((Type == EFI_IFR_TYPE_STRING) && (Value->string == 0) &&
1676 (PrivateData->PasswordState == BROWSER_STATE_SET_PASSWORD)) {
1677 PrivateData->PasswordState = BROWSER_STATE_VALIDATE_PASSWORD;
1678 return EFI_INVALID_PARAMETER;
1679 }
1680
1681 //
1682 // When try to set a new password, user will be chanlleged with old password.
1683 // The Callback is responsible for validating old password input by user,
1684 // If Callback return EFI_SUCCESS, it indicates validation pass.
1685 //
1686 switch (PrivateData->PasswordState) {
1687 case BROWSER_STATE_VALIDATE_PASSWORD:
1688 Status = ValidatePassword (PrivateData, Value->string);
1689 if (Status == EFI_SUCCESS) {
1690 PrivateData->PasswordState = BROWSER_STATE_SET_PASSWORD;
1691 }
1692 break;
1693
1694 case BROWSER_STATE_SET_PASSWORD:
1695 Status = SetPassword (PrivateData, Value->string);
1696 PrivateData->PasswordState = BROWSER_STATE_VALIDATE_PASSWORD;
1697 break;
1698
1699 default:
1700 break;
1701 }
1702
1703 break;
1704
1705 default:
1706 break;
1707 }
1708 }
1709 break;
1710
1711 case EFI_BROWSER_ACTION_CHANGED:
1712 switch (QuestionId) {
1713 case 0x1237:
1714 //
1715 // User press "Exit now", request Browser to exit
1716 //
1717 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
1718 break;
1719
1720 case 0x1238:
1721 //
1722 // User press "Save now", request Browser to save the uncommitted data.
1723 //
1724 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_SUBMIT;
1725 break;
1726
1727 case 0x1241:
1728 case 0x1246:
1729 //
1730 // User press "Submit current form and Exit now", request Browser to submit current form and exit
1731 //
1732 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_SUBMIT_EXIT;
1733 break;
1734
1735 case 0x1242:
1736 //
1737 // User press "Discard current form now", request Browser to discard the uncommitted data.
1738 //
1739 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_DISCARD;
1740 break;
1741
1742 case 0x1243:
1743 //
1744 // User press "Submit current form now", request Browser to save the uncommitted data.
1745 //
1746 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_APPLY;
1747 break;
1748
1749 case 0x1244:
1750 case 0x1245:
1751 //
1752 // User press "Discard current form and Exit now", request Browser to discard the uncommitted data and exit.
1753 //
1754 *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_DISCARD_EXIT;
1755 break;
1756
1757 default:
1758 break;
1759 }
1760 break;
1761
1762 default:
1763 Status = EFI_UNSUPPORTED;
1764 break;
1765 }
1766
1767 return Status;
1768 }
1769
1770 /**
1771 Main entry for this driver.
1772
1773 @param ImageHandle Image handle this driver.
1774 @param SystemTable Pointer to SystemTable.
1775
1776 @retval EFI_SUCESS This function always complete successfully.
1777
1778 **/
1779 EFI_STATUS
1780 EFIAPI
1781 DriverSampleInit (
1782 IN EFI_HANDLE ImageHandle,
1783 IN EFI_SYSTEM_TABLE *SystemTable
1784 )
1785 {
1786 EFI_STATUS Status;
1787 EFI_HII_HANDLE HiiHandle[2];
1788 EFI_SCREEN_DESCRIPTOR Screen;
1789 EFI_HII_DATABASE_PROTOCOL *HiiDatabase;
1790 EFI_HII_STRING_PROTOCOL *HiiString;
1791 EFI_FORM_BROWSER2_PROTOCOL *FormBrowser2;
1792 EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
1793 CHAR16 *NewString;
1794 UINTN BufferSize;
1795 DRIVER_SAMPLE_CONFIGURATION *Configuration;
1796 BOOLEAN ActionFlag;
1797 EFI_STRING ConfigRequestHdr;
1798 EFI_STRING NameRequestHdr;
1799 MY_EFI_VARSTORE_DATA *VarStoreConfig;
1800 EFI_INPUT_KEY HotKey;
1801 EFI_FORM_BROWSER_EXTENSION_PROTOCOL *FormBrowserEx;
1802
1803 //
1804 // Initialize the local variables.
1805 //
1806 ConfigRequestHdr = NULL;
1807 NewString = NULL;
1808
1809 //
1810 // Initialize screen dimensions for SendForm().
1811 // Remove 3 characters from top and bottom
1812 //
1813 ZeroMem (&Screen, sizeof (EFI_SCREEN_DESCRIPTOR));
1814 gST->ConOut->QueryMode (gST->ConOut, gST->ConOut->Mode->Mode, &Screen.RightColumn, &Screen.BottomRow);
1815
1816 Screen.TopRow = 3;
1817 Screen.BottomRow = Screen.BottomRow - 3;
1818
1819 //
1820 // Initialize driver private data
1821 //
1822 PrivateData = AllocateZeroPool (sizeof (DRIVER_SAMPLE_PRIVATE_DATA));
1823 if (PrivateData == NULL) {
1824 return EFI_OUT_OF_RESOURCES;
1825 }
1826
1827 PrivateData->Signature = DRIVER_SAMPLE_PRIVATE_SIGNATURE;
1828
1829 PrivateData->ConfigAccess.ExtractConfig = ExtractConfig;
1830 PrivateData->ConfigAccess.RouteConfig = RouteConfig;
1831 PrivateData->ConfigAccess.Callback = DriverCallback;
1832 PrivateData->PasswordState = BROWSER_STATE_VALIDATE_PASSWORD;
1833
1834 //
1835 // Locate Hii Database protocol
1836 //
1837 Status = gBS->LocateProtocol (&gEfiHiiDatabaseProtocolGuid, NULL, (VOID **) &HiiDatabase);
1838 if (EFI_ERROR (Status)) {
1839 return Status;
1840 }
1841 PrivateData->HiiDatabase = HiiDatabase;
1842
1843 //
1844 // Locate HiiString protocol
1845 //
1846 Status = gBS->LocateProtocol (&gEfiHiiStringProtocolGuid, NULL, (VOID **) &HiiString);
1847 if (EFI_ERROR (Status)) {
1848 return Status;
1849 }
1850 PrivateData->HiiString = HiiString;
1851
1852 //
1853 // Locate Formbrowser2 protocol
1854 //
1855 Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &FormBrowser2);
1856 if (EFI_ERROR (Status)) {
1857 return Status;
1858 }
1859 PrivateData->FormBrowser2 = FormBrowser2;
1860
1861 //
1862 // Locate ConfigRouting protocol
1863 //
1864 Status = gBS->LocateProtocol (&gEfiHiiConfigRoutingProtocolGuid, NULL, (VOID **) &HiiConfigRouting);
1865 if (EFI_ERROR (Status)) {
1866 return Status;
1867 }
1868 PrivateData->HiiConfigRouting = HiiConfigRouting;
1869
1870 Status = gBS->InstallMultipleProtocolInterfaces (
1871 &DriverHandle[0],
1872 &gEfiDevicePathProtocolGuid,
1873 &mHiiVendorDevicePath0,
1874 &gEfiHiiConfigAccessProtocolGuid,
1875 &PrivateData->ConfigAccess,
1876 NULL
1877 );
1878 ASSERT_EFI_ERROR (Status);
1879
1880 PrivateData->DriverHandle[0] = DriverHandle[0];
1881
1882 //
1883 // Publish our HII data
1884 //
1885 HiiHandle[0] = HiiAddPackages (
1886 &gDriverSampleFormSetGuid,
1887 DriverHandle[0],
1888 DriverSampleStrings,
1889 VfrBin,
1890 NULL
1891 );
1892 if (HiiHandle[0] == NULL) {
1893 return EFI_OUT_OF_RESOURCES;
1894 }
1895
1896 PrivateData->HiiHandle[0] = HiiHandle[0];
1897
1898 //
1899 // Publish another Fromset
1900 //
1901 Status = gBS->InstallMultipleProtocolInterfaces (
1902 &DriverHandle[1],
1903 &gEfiDevicePathProtocolGuid,
1904 &mHiiVendorDevicePath1,
1905 NULL
1906 );
1907 ASSERT_EFI_ERROR (Status);
1908
1909 PrivateData->DriverHandle[1] = DriverHandle[1];
1910
1911 HiiHandle[1] = HiiAddPackages (
1912 &gDriverSampleInventoryGuid,
1913 DriverHandle[1],
1914 DriverSampleStrings,
1915 InventoryBin,
1916 NULL
1917 );
1918 if (HiiHandle[1] == NULL) {
1919 DriverSampleUnload (ImageHandle);
1920 return EFI_OUT_OF_RESOURCES;
1921 }
1922
1923 PrivateData->HiiHandle[1] = HiiHandle[1];
1924
1925 //
1926 // Update the device path string.
1927 //
1928 NewString = ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL*)&mHiiVendorDevicePath0, FALSE, FALSE);
1929 if (HiiSetString (HiiHandle[0], STRING_TOKEN (STR_DEVICE_PATH), NewString, NULL) == 0) {
1930 DriverSampleUnload (ImageHandle);
1931 return EFI_OUT_OF_RESOURCES;
1932 }
1933 if (NewString != NULL) {
1934 FreePool (NewString);
1935 }
1936
1937 //
1938 // Very simple example of how one would update a string that is already
1939 // in the HII database
1940 //
1941 NewString = L"700 Mhz";
1942
1943 if (HiiSetString (HiiHandle[0], STRING_TOKEN (STR_CPU_STRING2), NewString, NULL) == 0) {
1944 DriverSampleUnload (ImageHandle);
1945 return EFI_OUT_OF_RESOURCES;
1946 }
1947
1948 HiiSetString (HiiHandle[0], 0, NewString, NULL);
1949
1950 //
1951 // Initialize Name/Value name String ID
1952 //
1953 PrivateData->NameStringId[0] = STR_NAME_VALUE_VAR_NAME0;
1954 PrivateData->NameStringId[1] = STR_NAME_VALUE_VAR_NAME1;
1955 PrivateData->NameStringId[2] = STR_NAME_VALUE_VAR_NAME2;
1956
1957 //
1958 // Initialize configuration data
1959 //
1960 Configuration = &PrivateData->Configuration;
1961 ZeroMem (Configuration, sizeof (DRIVER_SAMPLE_CONFIGURATION));
1962
1963 //
1964 // Try to read NV config EFI variable first
1965 //
1966 ConfigRequestHdr = HiiConstructConfigHdr (&gDriverSampleFormSetGuid, VariableName, DriverHandle[0]);
1967 ASSERT (ConfigRequestHdr != NULL);
1968
1969 NameRequestHdr = HiiConstructConfigHdr (&gDriverSampleFormSetGuid, NULL, DriverHandle[0]);
1970 ASSERT (NameRequestHdr != NULL);
1971
1972 BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
1973 Status = gRT->GetVariable (VariableName, &gDriverSampleFormSetGuid, NULL, &BufferSize, Configuration);
1974 if (EFI_ERROR (Status)) {
1975 //
1976 // Store zero data Buffer Storage to EFI variable
1977 //
1978 Status = gRT->SetVariable(
1979 VariableName,
1980 &gDriverSampleFormSetGuid,
1981 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
1982 sizeof (DRIVER_SAMPLE_CONFIGURATION),
1983 Configuration
1984 );
1985 if (EFI_ERROR (Status)) {
1986 DriverSampleUnload (ImageHandle);
1987 return Status;
1988 }
1989 //
1990 // EFI variable for NV config doesn't exit, we should build this variable
1991 // based on default values stored in IFR
1992 //
1993 ActionFlag = HiiSetToDefaults (NameRequestHdr, EFI_HII_DEFAULT_CLASS_STANDARD);
1994 if (!ActionFlag) {
1995 DriverSampleUnload (ImageHandle);
1996 return EFI_INVALID_PARAMETER;
1997 }
1998
1999 ActionFlag = HiiSetToDefaults (ConfigRequestHdr, EFI_HII_DEFAULT_CLASS_STANDARD);
2000 if (!ActionFlag) {
2001 DriverSampleUnload (ImageHandle);
2002 return EFI_INVALID_PARAMETER;
2003 }
2004 } else {
2005 //
2006 // EFI variable does exist and Validate Current Setting
2007 //
2008 ActionFlag = HiiValidateSettings (NameRequestHdr);
2009 if (!ActionFlag) {
2010 DriverSampleUnload (ImageHandle);
2011 return EFI_INVALID_PARAMETER;
2012 }
2013
2014 ActionFlag = HiiValidateSettings (ConfigRequestHdr);
2015 if (!ActionFlag) {
2016 DriverSampleUnload (ImageHandle);
2017 return EFI_INVALID_PARAMETER;
2018 }
2019 }
2020 FreePool (ConfigRequestHdr);
2021
2022 //
2023 // Initialize efi varstore configuration data
2024 //
2025 VarStoreConfig = &PrivateData->VarStoreConfig;
2026 ZeroMem (VarStoreConfig, sizeof (MY_EFI_VARSTORE_DATA));
2027
2028 ConfigRequestHdr = HiiConstructConfigHdr (&gDriverSampleFormSetGuid, MyEfiVar, DriverHandle[0]);
2029 ASSERT (ConfigRequestHdr != NULL);
2030
2031 BufferSize = sizeof (MY_EFI_VARSTORE_DATA);
2032 Status = gRT->GetVariable (MyEfiVar, &gDriverSampleFormSetGuid, NULL, &BufferSize, VarStoreConfig);
2033 if (EFI_ERROR (Status)) {
2034 //
2035 // Store zero data to EFI variable Storage.
2036 //
2037 Status = gRT->SetVariable(
2038 MyEfiVar,
2039 &gDriverSampleFormSetGuid,
2040 EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
2041 sizeof (MY_EFI_VARSTORE_DATA),
2042 VarStoreConfig
2043 );
2044 if (EFI_ERROR (Status)) {
2045 DriverSampleUnload (ImageHandle);
2046 return Status;
2047 }
2048 //
2049 // EFI variable for NV config doesn't exit, we should build this variable
2050 // based on default values stored in IFR
2051 //
2052 ActionFlag = HiiSetToDefaults (ConfigRequestHdr, EFI_HII_DEFAULT_CLASS_STANDARD);
2053 if (!ActionFlag) {
2054 DriverSampleUnload (ImageHandle);
2055 return EFI_INVALID_PARAMETER;
2056 }
2057 } else {
2058 //
2059 // EFI variable does exist and Validate Current Setting
2060 //
2061 ActionFlag = HiiValidateSettings (ConfigRequestHdr);
2062 if (!ActionFlag) {
2063 DriverSampleUnload (ImageHandle);
2064 return EFI_INVALID_PARAMETER;
2065 }
2066 }
2067 FreePool (ConfigRequestHdr);
2068
2069 Status = gBS->CreateEventEx (
2070 EVT_NOTIFY_SIGNAL,
2071 TPL_NOTIFY,
2072 DriverSampleInternalEmptyFunction,
2073 NULL,
2074 &gEfiIfrRefreshIdOpGuid,
2075 &mEvent
2076 );
2077 ASSERT_EFI_ERROR (Status);
2078
2079 //
2080 // Example of how to use BrowserEx protocol to register HotKey.
2081 //
2082 Status = gBS->LocateProtocol (&gEfiFormBrowserExProtocolGuid, NULL, (VOID **) &FormBrowserEx);
2083 if (!EFI_ERROR (Status)) {
2084 //
2085 // First unregister the default hot key F9 and F10.
2086 //
2087 HotKey.UnicodeChar = CHAR_NULL;
2088 HotKey.ScanCode = SCAN_F9;
2089 FormBrowserEx->RegisterHotKey (&HotKey, 0, 0, NULL);
2090 HotKey.ScanCode = SCAN_F10;
2091 FormBrowserEx->RegisterHotKey (&HotKey, 0, 0, NULL);
2092
2093 //
2094 // Register the default HotKey F9 and F10 again.
2095 //
2096 HotKey.ScanCode = SCAN_F10;
2097 NewString = HiiGetString (PrivateData->HiiHandle[0], STRING_TOKEN (FUNCTION_TEN_STRING), NULL);
2098 ASSERT (NewString != NULL);
2099 FormBrowserEx->RegisterHotKey (&HotKey, BROWSER_ACTION_SUBMIT, 0, NewString);
2100 HotKey.ScanCode = SCAN_F9;
2101 NewString = HiiGetString (PrivateData->HiiHandle[0], STRING_TOKEN (FUNCTION_NINE_STRING), NULL);
2102 ASSERT (NewString != NULL);
2103 FormBrowserEx->RegisterHotKey (&HotKey, BROWSER_ACTION_DEFAULT, EFI_HII_DEFAULT_CLASS_STANDARD, NewString);
2104 }
2105
2106 //
2107 // In default, this driver is built into Flash device image,
2108 // the following code doesn't run.
2109 //
2110
2111 //
2112 // Example of how to display only the item we sent to HII
2113 // When this driver is not built into Flash device image,
2114 // it need to call SendForm to show front page by itself.
2115 //
2116 if (DISPLAY_ONLY_MY_ITEM <= 1) {
2117 //
2118 // Have the browser pull out our copy of the data, and only display our data
2119 //
2120 Status = FormBrowser2->SendForm (
2121 FormBrowser2,
2122 &(HiiHandle[DISPLAY_ONLY_MY_ITEM]),
2123 1,
2124 NULL,
2125 0,
2126 NULL,
2127 NULL
2128 );
2129
2130 HiiRemovePackages (HiiHandle[0]);
2131
2132 HiiRemovePackages (HiiHandle[1]);
2133 }
2134
2135 return EFI_SUCCESS;
2136 }
2137
2138 /**
2139 Unloads the application and its installed protocol.
2140
2141 @param[in] ImageHandle Handle that identifies the image to be unloaded.
2142
2143 @retval EFI_SUCCESS The image has been unloaded.
2144 **/
2145 EFI_STATUS
2146 EFIAPI
2147 DriverSampleUnload (
2148 IN EFI_HANDLE ImageHandle
2149 )
2150 {
2151 UINTN Index;
2152
2153 ASSERT (PrivateData != NULL);
2154
2155 if (DriverHandle[0] != NULL) {
2156 gBS->UninstallMultipleProtocolInterfaces (
2157 DriverHandle[0],
2158 &gEfiDevicePathProtocolGuid,
2159 &mHiiVendorDevicePath0,
2160 &gEfiHiiConfigAccessProtocolGuid,
2161 &PrivateData->ConfigAccess,
2162 NULL
2163 );
2164 DriverHandle[0] = NULL;
2165 }
2166
2167 if (DriverHandle[1] != NULL) {
2168 gBS->UninstallMultipleProtocolInterfaces (
2169 DriverHandle[1],
2170 &gEfiDevicePathProtocolGuid,
2171 &mHiiVendorDevicePath1,
2172 NULL
2173 );
2174 DriverHandle[1] = NULL;
2175 }
2176
2177 if (PrivateData->HiiHandle[0] != NULL) {
2178 HiiRemovePackages (PrivateData->HiiHandle[0]);
2179 }
2180
2181 if (PrivateData->HiiHandle[1] != NULL) {
2182 HiiRemovePackages (PrivateData->HiiHandle[1]);
2183 }
2184
2185 for (Index = 0; Index < NAME_VALUE_NAME_NUMBER; Index++) {
2186 if (PrivateData->NameValueName[Index] != NULL) {
2187 FreePool (PrivateData->NameValueName[Index]);
2188 }
2189 }
2190 FreePool (PrivateData);
2191 PrivateData = NULL;
2192
2193 gBS->CloseEvent (mEvent);
2194
2195 return EFI_SUCCESS;
2196 }