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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2007, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | UefiIfrForm.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Common Library Routines to assist handle HII elements.\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | #include "UefiIfrLibrary.h"\r | |
23 | \r | |
24 | //\r | |
25 | // Fake <ConfigHdr>\r | |
26 | //\r | |
27 | UINT16 mFakeConfigHdr[] = L"GUID=00000000000000000000000000000000&NAME=0000&PATH=0";\r | |
28 | \r | |
29 | STATIC\r | |
30 | EFI_STATUS\r | |
31 | GetPackageDataFromPackageList (\r | |
32 | IN EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList,\r | |
33 | IN UINT32 PackageIndex,\r | |
34 | OUT UINT32 *BufferLen,\r | |
35 | OUT EFI_HII_PACKAGE_HEADER **Buffer\r | |
36 | )\r | |
37 | {\r | |
38 | UINT32 Index;\r | |
39 | EFI_HII_PACKAGE_HEADER *Package;\r | |
40 | UINT32 Offset;\r | |
41 | UINT32 PackageListLength;\r | |
42 | EFI_HII_PACKAGE_HEADER PackageHeader = {0, 0};\r | |
43 | \r | |
44 | ASSERT(HiiPackageList != NULL);\r | |
45 | \r | |
46 | if ((BufferLen == NULL) || (Buffer == NULL)) {\r | |
47 | return EFI_INVALID_PARAMETER;\r | |
48 | }\r | |
49 | \r | |
50 | Package = NULL;\r | |
51 | Index = 0;\r | |
52 | Offset = sizeof (EFI_HII_PACKAGE_LIST_HEADER);\r | |
53 | EfiCopyMem (&PackageListLength, &HiiPackageList->PackageLength, sizeof (UINT32));\r | |
54 | while (Offset < PackageListLength) {\r | |
55 | Package = (EFI_HII_PACKAGE_HEADER *) (((UINT8 *) HiiPackageList) + Offset);\r | |
56 | EfiCopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));\r | |
57 | if (Index == PackageIndex) {\r | |
58 | break;\r | |
59 | }\r | |
60 | Offset += PackageHeader.Length;\r | |
61 | Index++;\r | |
62 | }\r | |
63 | if (Offset >= PackageListLength) {\r | |
64 | //\r | |
65 | // no package found in this Package List\r | |
66 | //\r | |
67 | return EFI_NOT_FOUND;\r | |
68 | }\r | |
69 | \r | |
70 | *BufferLen = PackageHeader.Length;\r | |
71 | *Buffer = Package;\r | |
72 | return EFI_SUCCESS;\r | |
73 | }\r | |
74 | \r | |
75 | STATIC\r | |
76 | EFI_STATUS\r | |
77 | UpdateFormPackageData (\r | |
78 | IN EFI_GUID *FormSetGuid,\r | |
79 | IN EFI_FORM_ID FormId,\r | |
80 | IN EFI_HII_PACKAGE_HEADER *Package,\r | |
81 | IN UINT32 PackageLength,\r | |
82 | IN UINT16 Label,\r | |
83 | IN BOOLEAN Insert,\r | |
84 | IN EFI_HII_UPDATE_DATA *Data,\r | |
85 | OUT UINT8 **TempBuffer,\r | |
86 | OUT UINT32 *TempBufferSize\r | |
87 | )\r | |
88 | {\r | |
89 | UINTN AddSize;\r | |
90 | UINT8 *BufferPos;\r | |
91 | EFI_HII_PACKAGE_HEADER PackageHeader;\r | |
92 | UINTN Offset;\r | |
93 | EFI_IFR_OP_HEADER *IfrOpHdr;\r | |
94 | BOOLEAN GetFormSet;\r | |
95 | BOOLEAN GetForm;\r | |
96 | UINT8 ExtendOpCode;\r | |
97 | UINT16 LabelNumber;\r | |
98 | BOOLEAN Updated;\r | |
99 | EFI_IFR_OP_HEADER *AddOpCode;\r | |
100 | \r | |
101 | if ((TempBuffer == NULL) || (TempBufferSize == NULL)) {\r | |
102 | return EFI_INVALID_PARAMETER;\r | |
103 | }\r | |
104 | \r | |
105 | *TempBufferSize = PackageLength;\r | |
106 | if (Data != NULL) {\r | |
107 | *TempBufferSize += Data->Offset;\r | |
108 | }\r | |
109 | *TempBuffer = EfiLibAllocateZeroPool (*TempBufferSize);\r | |
110 | if (*TempBuffer == NULL) {\r | |
111 | return EFI_OUT_OF_RESOURCES;\r | |
112 | }\r | |
113 | \r | |
114 | EfiCopyMem (*TempBuffer, Package, sizeof (EFI_HII_PACKAGE_HEADER));\r | |
115 | *TempBufferSize = sizeof (EFI_HII_PACKAGE_HEADER);\r | |
116 | BufferPos = *TempBuffer + sizeof (EFI_HII_PACKAGE_HEADER);\r | |
117 | \r | |
118 | EfiCopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));\r | |
119 | IfrOpHdr = (EFI_IFR_OP_HEADER *)((UINT8 *) Package + sizeof (EFI_HII_PACKAGE_HEADER));\r | |
120 | Offset = sizeof (EFI_HII_PACKAGE_HEADER);\r | |
121 | GetFormSet = (FormSetGuid == NULL) ? TRUE : FALSE;\r | |
122 | GetForm = FALSE;\r | |
123 | Updated = FALSE;\r | |
124 | \r | |
125 | while (Offset < PackageHeader.Length) {\r | |
126 | EfiCopyMem (BufferPos, IfrOpHdr, IfrOpHdr->Length);\r | |
127 | BufferPos += IfrOpHdr->Length;\r | |
128 | *TempBufferSize += IfrOpHdr->Length;\r | |
129 | \r | |
130 | switch (IfrOpHdr->OpCode) {\r | |
131 | case EFI_IFR_FORM_SET_OP :\r | |
132 | if (FormSetGuid != NULL) {\r | |
133 | if (EfiCompareMem (&((EFI_IFR_FORM_SET *) IfrOpHdr)->Guid, FormSetGuid, sizeof (EFI_GUID)) == 0) {\r | |
134 | GetFormSet = TRUE;\r | |
135 | }\r | |
136 | }\r | |
137 | break;\r | |
138 | \r | |
139 | case EFI_IFR_FORM_OP:\r | |
140 | if (EfiCompareMem (&((EFI_IFR_FORM *) IfrOpHdr)->FormId, &FormId, sizeof (EFI_FORM_ID)) == 0) {\r | |
141 | GetForm = TRUE;\r | |
142 | }\r | |
143 | break;\r | |
144 | \r | |
145 | case EFI_IFR_GUID_OP :\r | |
146 | if (!GetFormSet || !GetForm || Updated) {\r | |
147 | //\r | |
148 | // Go to the next Op-Code\r | |
149 | //\r | |
150 | Offset += IfrOpHdr->Length;\r | |
151 | IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);\r | |
152 | continue;\r | |
153 | }\r | |
154 | \r | |
155 | ExtendOpCode = ((EFI_IFR_GUID_LABEL *) IfrOpHdr)->ExtendOpCode;\r | |
156 | EfiCopyMem (&LabelNumber, &((EFI_IFR_GUID_LABEL *)IfrOpHdr)->Number, sizeof (UINT16));\r | |
157 | if ((ExtendOpCode != EFI_IFR_EXTEND_OP_LABEL) || (LabelNumber != Label)) {\r | |
158 | //\r | |
159 | // Go to the next Op-Code\r | |
160 | //\r | |
161 | Offset += IfrOpHdr->Length;\r | |
162 | IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);\r | |
163 | continue;\r | |
164 | }\r | |
165 | \r | |
166 | if (Insert && (Data != NULL)) {\r | |
167 | //\r | |
168 | // insert the DataCount amount of opcodes to TempBuffer if Data is NULL remove\r | |
169 | // DataCount amount of opcodes unless runing into a label.\r | |
170 | //\r | |
171 | AddOpCode = (EFI_IFR_OP_HEADER *)Data->Data;\r | |
172 | AddSize = 0;\r | |
173 | while (AddSize < Data->Offset) {\r | |
174 | EfiCopyMem (BufferPos, AddOpCode, AddOpCode->Length);\r | |
175 | BufferPos += AddOpCode->Length;\r | |
176 | *TempBufferSize += AddOpCode->Length;\r | |
177 | \r | |
178 | AddSize += AddOpCode->Length;\r | |
179 | AddOpCode = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (AddOpCode) + AddOpCode->Length);\r | |
180 | }\r | |
181 | } else {\r | |
182 | //\r | |
183 | // Search the next Label.\r | |
184 | //\r | |
185 | while (TRUE) {\r | |
186 | Offset += IfrOpHdr->Length;\r | |
187 | //\r | |
188 | // Search the next label and Fail if not label found.\r | |
189 | //\r | |
190 | if (Offset >= PackageHeader.Length) {\r | |
191 | goto Fail;\r | |
192 | }\r | |
193 | IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);\r | |
194 | if (IfrOpHdr->OpCode == EFI_IFR_GUID_OP) {\r | |
195 | ExtendOpCode = ((EFI_IFR_GUID_LABEL *) IfrOpHdr)->ExtendOpCode;\r | |
196 | if (ExtendOpCode == EFI_IFR_EXTEND_OP_LABEL) {\r | |
197 | break;\r | |
198 | }\r | |
199 | }\r | |
200 | }\r | |
201 | \r | |
202 | if (Data != NULL) {\r | |
203 | AddOpCode = (EFI_IFR_OP_HEADER *)Data->Data;\r | |
204 | AddSize = 0;\r | |
205 | while (AddSize < Data->Offset) {\r | |
206 | EfiCopyMem (BufferPos, AddOpCode, AddOpCode->Length);\r | |
207 | BufferPos += AddOpCode->Length;\r | |
208 | *TempBufferSize += AddOpCode->Length;\r | |
209 | \r | |
210 | AddSize += AddOpCode->Length;\r | |
211 | AddOpCode = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (AddOpCode) + AddOpCode->Length);\r | |
212 | }\r | |
213 | }\r | |
214 | \r | |
215 | //\r | |
216 | // copy the next label\r | |
217 | //\r | |
218 | EfiCopyMem (BufferPos, IfrOpHdr, IfrOpHdr->Length);\r | |
219 | BufferPos += IfrOpHdr->Length;\r | |
220 | *TempBufferSize += IfrOpHdr->Length;\r | |
221 | }\r | |
222 | \r | |
223 | Updated = TRUE;\r | |
224 | break;\r | |
225 | default :\r | |
226 | break;\r | |
227 | }\r | |
228 | \r | |
229 | //\r | |
230 | // Go to the next Op-Code\r | |
231 | //\r | |
232 | Offset += IfrOpHdr->Length;\r | |
233 | IfrOpHdr = (EFI_IFR_OP_HEADER *) ((CHAR8 *) (IfrOpHdr) + IfrOpHdr->Length);\r | |
234 | }\r | |
235 | \r | |
236 | //\r | |
237 | // Update the package length.\r | |
238 | //\r | |
239 | PackageHeader.Length = *TempBufferSize;\r | |
240 | EfiCopyMem (*TempBuffer, &PackageHeader, sizeof (EFI_HII_PACKAGE_HEADER));\r | |
241 | \r | |
242 | Fail:\r | |
243 | if (!Updated) {\r | |
244 | gBS->FreePool (*TempBuffer);\r | |
245 | *TempBufferSize = 0;\r | |
246 | return EFI_NOT_FOUND;\r | |
247 | }\r | |
248 | \r | |
249 | return EFI_SUCCESS;\r | |
250 | }\r | |
251 | \r | |
252 | EFI_STATUS\r | |
253 | IfrLibUpdateForm (\r | |
254 | IN EFI_HII_HANDLE Handle,\r | |
255 | IN EFI_GUID *FormSetGuid, OPTIONAL\r | |
256 | IN EFI_FORM_ID FormId,\r | |
257 | IN UINT16 Label,\r | |
258 | IN BOOLEAN Insert,\r | |
259 | IN EFI_HII_UPDATE_DATA *Data\r | |
260 | )\r | |
261 | /*++\r | |
262 | \r | |
263 | Routine Description:\r | |
264 | This function allows the caller to update a form that has\r | |
265 | previously been registered with the EFI HII database.\r | |
266 | \r | |
267 | Arguments:\r | |
268 | Handle - Hii Handle\r | |
269 | FormSetGuid - The formset should be updated.\r | |
270 | FormId - The form should be updated.\r | |
271 | Label - Update information starting immediately after this label in the IFR\r | |
272 | Insert - If TRUE and Data is not NULL, insert data after Label.\r | |
273 | If FALSE, replace opcodes between two labels with Data\r | |
274 | Data - The adding data; If NULL, remove opcodes between two Label.\r | |
275 | \r | |
276 | Returns:\r | |
277 | EFI_SUCCESS - Update success.\r | |
278 | Other - Update fail.\r | |
279 | \r | |
280 | --*/\r | |
281 | {\r | |
282 | EFI_STATUS Status;\r | |
283 | EFI_HII_DATABASE_PROTOCOL *HiiDatabase;\r | |
284 | EFI_HII_PACKAGE_LIST_HEADER *HiiPackageList;\r | |
285 | UINT32 Index;\r | |
286 | EFI_HII_PACKAGE_LIST_HEADER *UpdateBuffer;\r | |
287 | UINTN BufferSize;\r | |
288 | UINT8 *UpdateBufferPos;\r | |
289 | EFI_HII_PACKAGE_HEADER PackageHeader;\r | |
290 | EFI_HII_PACKAGE_HEADER *Package;\r | |
291 | UINT32 PackageLength;\r | |
292 | EFI_HII_PACKAGE_HEADER *TempBuffer;\r | |
293 | UINT32 TempBufferSize;\r | |
294 | BOOLEAN Updated;\r | |
295 | \r | |
296 | if (Data == NULL) {\r | |
297 | return EFI_INVALID_PARAMETER;\r | |
298 | }\r | |
299 | \r | |
300 | LocateHiiProtocols ();\r | |
301 | HiiDatabase = gIfrLibHiiDatabase;\r | |
302 | \r | |
303 | //\r | |
304 | // Get the orginal package list\r | |
305 | //\r | |
306 | BufferSize = 0;\r | |
307 | HiiPackageList = NULL;\r | |
308 | Status = HiiDatabase->ExportPackageLists (HiiDatabase, Handle, &BufferSize, HiiPackageList);\r | |
309 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
310 | HiiPackageList = EfiLibAllocatePool (BufferSize);\r | |
311 | ASSERT (HiiPackageList != NULL);\r | |
312 | \r | |
313 | Status = HiiDatabase->ExportPackageLists (HiiDatabase, Handle, &BufferSize, HiiPackageList);\r | |
314 | if (EFI_ERROR (Status)) {\r | |
315 | gBS->FreePool (HiiPackageList);\r | |
316 | return Status;\r | |
317 | }\r | |
318 | }\r | |
319 | \r | |
320 | //\r | |
321 | // Calculate and allocate space for retrieval of IFR data\r | |
322 | //\r | |
323 | BufferSize += Data->Offset;\r | |
324 | UpdateBuffer = EfiLibAllocateZeroPool (BufferSize);\r | |
325 | if (UpdateBuffer == NULL) {\r | |
326 | return EFI_OUT_OF_RESOURCES;\r | |
327 | }\r | |
328 | \r | |
329 | UpdateBufferPos = (UINT8 *) UpdateBuffer;\r | |
330 | \r | |
331 | //\r | |
332 | // copy the package list header\r | |
333 | //\r | |
334 | EfiCopyMem (UpdateBufferPos, HiiPackageList, sizeof (EFI_HII_PACKAGE_LIST_HEADER));\r | |
335 | UpdateBufferPos += sizeof (EFI_HII_PACKAGE_LIST_HEADER);\r | |
336 | \r | |
337 | Updated = FALSE;\r | |
338 | for (Index = 0; ; Index++) {\r | |
339 | Status = GetPackageDataFromPackageList (HiiPackageList, Index, &PackageLength, &Package);\r | |
340 | if (Status == EFI_SUCCESS) {\r | |
341 | EfiCopyMem (&PackageHeader, Package, sizeof (EFI_HII_PACKAGE_HEADER));\r | |
342 | if ((PackageHeader.Type == EFI_HII_PACKAGE_FORM) && !Updated) {\r | |
343 | Status = UpdateFormPackageData (FormSetGuid, FormId, Package, PackageLength, Label, Insert, Data, (UINT8 **)&TempBuffer, &TempBufferSize);\r | |
344 | if (!EFI_ERROR(Status)) {\r | |
345 | if (FormSetGuid == NULL) {\r | |
346 | Updated = TRUE;\r | |
347 | }\r | |
348 | EfiCopyMem (UpdateBufferPos, TempBuffer, TempBufferSize);\r | |
349 | UpdateBufferPos += TempBufferSize;\r | |
350 | gBS->FreePool (TempBuffer);\r | |
351 | continue;\r | |
352 | }\r | |
353 | }\r | |
354 | \r | |
355 | EfiCopyMem (UpdateBufferPos, Package, PackageLength);\r | |
356 | UpdateBufferPos += PackageLength;\r | |
357 | } else if (Status == EFI_NOT_FOUND) {\r | |
358 | break;\r | |
359 | } else {\r | |
360 | gBS->FreePool (HiiPackageList);\r | |
361 | return Status;\r | |
362 | }\r | |
363 | }\r | |
364 | \r | |
365 | //\r | |
366 | // Update package list length\r | |
367 | //\r | |
368 | BufferSize = UpdateBufferPos - (UINT8 *) UpdateBuffer;\r | |
369 | EfiCopyMem (&UpdateBuffer->PackageLength, &BufferSize, sizeof (UINT32));\r | |
370 | \r | |
371 | gBS->FreePool (HiiPackageList);\r | |
372 | \r | |
373 | return HiiDatabase->UpdatePackageList (HiiDatabase, Handle, UpdateBuffer);\r | |
374 | }\r | |
375 | \r | |
376 | EFI_STATUS\r | |
377 | IfrLibCreatePopUp (\r | |
378 | IN UINTN NumberOfLines,\r | |
379 | OUT EFI_INPUT_KEY *KeyValue,\r | |
380 | IN CHAR16 *String,\r | |
381 | ...\r | |
382 | )\r | |
383 | /*++\r | |
384 | \r | |
385 | Routine Description:\r | |
386 | Draw a dialog and return the selected key.\r | |
387 | \r | |
388 | Arguments:\r | |
389 | NumberOfLines - The number of lines for the dialog box\r | |
390 | KeyValue - The EFI_KEY value returned if HotKey is TRUE..\r | |
391 | String - Pointer to the first string in the list\r | |
392 | ... - A series of (quantity == NumberOfLines) text strings which\r | |
393 | will be used to construct the dialog box\r | |
394 | \r | |
395 | Returns:\r | |
396 | EFI_SUCCESS - Displayed dialog and received user interaction\r | |
397 | EFI_INVALID_PARAMETER - One of the parameters was invalid.\r | |
398 | \r | |
399 | --*/\r | |
400 | {\r | |
401 | UINTN Index;\r | |
402 | UINTN Count;\r | |
403 | UINTN Start;\r | |
404 | UINTN End;\r | |
405 | UINTN Top;\r | |
406 | UINTN Bottom;\r | |
407 | CHAR16 *StringPtr;\r | |
408 | UINTN LeftColumn;\r | |
409 | UINTN RightColumn;\r | |
410 | UINTN TopRow;\r | |
411 | UINTN BottomRow;\r | |
412 | UINTN DimensionsWidth;\r | |
413 | UINTN DimensionsHeight;\r | |
414 | VA_LIST Marker;\r | |
415 | EFI_INPUT_KEY Key;\r | |
416 | UINTN LargestString;\r | |
417 | CHAR16 *StackString;\r | |
418 | EFI_STATUS Status;\r | |
419 | UINTN StringLen;\r | |
420 | CHAR16 *LineBuffer;\r | |
421 | CHAR16 **StringArray;\r | |
422 | EFI_EVENT TimerEvent;\r | |
423 | EFI_EVENT WaitList[2];\r | |
424 | UINTN CurrentAttribute;\r | |
425 | EFI_SIMPLE_TEXT_OUT_PROTOCOL *ConOut;\r | |
426 | \r | |
427 | if ((KeyValue == NULL) || (String == NULL)) {\r | |
428 | return EFI_INVALID_PARAMETER;\r | |
429 | }\r | |
430 | \r | |
431 | TopRow = 0;\r | |
432 | BottomRow = 0;\r | |
433 | LeftColumn = 0;\r | |
434 | RightColumn = 0;\r | |
435 | \r | |
436 | ConOut = gST->ConOut;\r | |
437 | ConOut->QueryMode (ConOut, ConOut->Mode->Mode, &RightColumn, &BottomRow);\r | |
438 | \r | |
439 | DimensionsWidth = RightColumn - LeftColumn;\r | |
440 | DimensionsHeight = BottomRow - TopRow;\r | |
441 | \r | |
442 | CurrentAttribute = ConOut->Mode->Attribute;\r | |
443 | \r | |
444 | LineBuffer = EfiLibAllocateZeroPool (DimensionsWidth * sizeof (CHAR16));\r | |
445 | ASSERT (LineBuffer != NULL);\r | |
446 | \r | |
447 | //\r | |
448 | // Determine the largest string in the dialog box\r | |
449 | // Notice we are starting with 1 since String is the first string\r | |
450 | //\r | |
451 | StringArray = EfiLibAllocateZeroPool (NumberOfLines * sizeof (CHAR16 *));\r | |
452 | LargestString = EfiStrLen (String);\r | |
453 | StringArray[0] = String;\r | |
454 | \r | |
455 | VA_START (Marker, String);\r | |
456 | for (Index = 1; Index < NumberOfLines; Index++) {\r | |
457 | StackString = VA_ARG (Marker, CHAR16 *);\r | |
458 | \r | |
459 | if (StackString == NULL) {\r | |
460 | return EFI_INVALID_PARAMETER;\r | |
461 | }\r | |
462 | \r | |
463 | StringArray[Index] = StackString;\r | |
464 | StringLen = EfiStrLen (StackString);\r | |
465 | if (StringLen > LargestString) {\r | |
466 | LargestString = StringLen;\r | |
467 | }\r | |
468 | }\r | |
469 | \r | |
470 | if ((LargestString + 2) > DimensionsWidth) {\r | |
471 | LargestString = DimensionsWidth - 2;\r | |
472 | }\r | |
473 | \r | |
474 | //\r | |
475 | // Subtract the PopUp width from total Columns, allow for one space extra on\r | |
476 | // each end plus a border.\r | |
477 | //\r | |
478 | Start = (DimensionsWidth - LargestString - 2) / 2 + LeftColumn + 1;\r | |
479 | End = Start + LargestString + 1;\r | |
480 | \r | |
481 | Top = ((DimensionsHeight - NumberOfLines - 2) / 2) + TopRow - 1;\r | |
482 | Bottom = Top + NumberOfLines + 2;\r | |
483 | \r | |
484 | //\r | |
485 | // Disable cursor\r | |
486 | //\r | |
487 | ConOut->EnableCursor (ConOut, FALSE);\r | |
488 | ConOut->SetAttribute (ConOut, EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE);\r | |
489 | \r | |
490 | StringPtr = &LineBuffer[0];\r | |
491 | *StringPtr++ = BOXDRAW_DOWN_RIGHT;\r | |
492 | for (Index = 0; Index < LargestString; Index++) {\r | |
493 | *StringPtr++ = BOXDRAW_HORIZONTAL;\r | |
494 | }\r | |
495 | *StringPtr++ = BOXDRAW_DOWN_LEFT;\r | |
496 | *StringPtr = L'\0';\r | |
497 | \r | |
498 | ConOut->SetCursorPosition (ConOut, Start, Top);\r | |
499 | ConOut->OutputString (ConOut, LineBuffer);\r | |
500 | \r | |
501 | for (Index = 0; Index < NumberOfLines; Index++) {\r | |
502 | StringPtr = &LineBuffer[0];\r | |
503 | *StringPtr++ = BOXDRAW_VERTICAL;\r | |
504 | \r | |
505 | for (Count = 0; Count < LargestString; Count++) {\r | |
506 | StringPtr[Count] = L' ';\r | |
507 | }\r | |
508 | \r | |
509 | StringLen = EfiStrLen (StringArray[Index]);\r | |
510 | if (StringLen > LargestString) {\r | |
511 | StringLen = LargestString;\r | |
512 | }\r | |
513 | EfiCopyMem (\r | |
514 | StringPtr + ((LargestString - StringLen) / 2),\r | |
515 | StringArray[Index],\r | |
516 | StringLen * sizeof (CHAR16)\r | |
517 | );\r | |
518 | StringPtr += LargestString;\r | |
519 | \r | |
520 | *StringPtr++ = BOXDRAW_VERTICAL;\r | |
521 | *StringPtr = L'\0';\r | |
522 | \r | |
523 | ConOut->SetCursorPosition (ConOut, Start, Top + 1 + Index);\r | |
524 | ConOut->OutputString (ConOut, LineBuffer);\r | |
525 | }\r | |
526 | \r | |
527 | StringPtr = &LineBuffer[0];\r | |
528 | *StringPtr++ = BOXDRAW_UP_RIGHT;\r | |
529 | for (Index = 0; Index < LargestString; Index++) {\r | |
530 | *StringPtr++ = BOXDRAW_HORIZONTAL;\r | |
531 | }\r | |
532 | *StringPtr++ = BOXDRAW_UP_LEFT;\r | |
533 | *StringPtr = L'\0';\r | |
534 | \r | |
535 | ConOut->SetCursorPosition (ConOut, Start, Top + NumberOfLines + 1);\r | |
536 | ConOut->OutputString (ConOut, LineBuffer);\r | |
537 | \r | |
538 | do {\r | |
539 | Status = gBS->CreateEvent (EFI_EVENT_TIMER, 0, NULL, NULL, &TimerEvent);\r | |
540 | \r | |
541 | //\r | |
542 | // Set a timer event of 1 second expiration\r | |
543 | //\r | |
544 | gBS->SetTimer (\r | |
545 | TimerEvent,\r | |
546 | TimerRelative,\r | |
547 | 10000000\r | |
548 | );\r | |
549 | \r | |
550 | //\r | |
551 | // Wait for the keystroke event or the timer\r | |
552 | //\r | |
553 | WaitList[0] = gST->ConIn->WaitForKey;\r | |
554 | WaitList[1] = TimerEvent;\r | |
555 | Status = gBS->WaitForEvent (2, WaitList, &Index);\r | |
556 | \r | |
557 | //\r | |
558 | // Check for the timer expiration\r | |
559 | //\r | |
560 | if (!EFI_ERROR (Status) && Index == 1) {\r | |
561 | Status = EFI_TIMEOUT;\r | |
562 | }\r | |
563 | \r | |
564 | gBS->CloseEvent (TimerEvent);\r | |
565 | } while (Status == EFI_TIMEOUT);\r | |
566 | \r | |
567 | Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);\r | |
568 | EfiCopyMem (KeyValue, &Key, sizeof (EFI_INPUT_KEY));\r | |
569 | \r | |
570 | ConOut->SetAttribute (ConOut, CurrentAttribute);\r | |
571 | ConOut->EnableCursor (ConOut, TRUE);\r | |
572 | \r | |
573 | return Status;\r | |
574 | }\r | |
575 | \r | |
576 | EFI_STATUS\r | |
577 | ExtractDefault(\r | |
578 | IN VOID *Buffer,\r | |
579 | IN UINTN *BufferSize,\r | |
580 | UINTN Number,\r | |
581 | ...\r | |
582 | )\r | |
583 | /*++\r | |
584 | \r | |
585 | Routine Description:\r | |
586 | \r | |
587 | Configure the buffer accrording to ConfigBody strings.\r | |
588 | \r | |
589 | Arguments:\r | |
590 | DefaultId - the ID of default.\r | |
591 | Buffer - the start address of buffer.\r | |
592 | BufferSize - the size of buffer.\r | |
593 | Number - the number of the strings.\r | |
594 | \r | |
595 | Returns:\r | |
596 | EFI_BUFFER_TOO_SMALL - the BufferSize is too small to operate.\r | |
597 | EFI_INVALID_PARAMETER - Buffer is NULL or BufferSize is 0.\r | |
598 | EFI_SUCCESS - Operation successful.\r | |
599 | \r | |
600 | --*/\r | |
601 | {\r | |
602 | VA_LIST Args;\r | |
603 | UINTN Index;\r | |
604 | UINT32 TotalLen;\r | |
605 | UINT8 *BufCfgArray;\r | |
606 | UINT8 *BufferPos;\r | |
607 | UINT16 Offset;\r | |
608 | UINT16 Width;\r | |
609 | UINT8 *Value;\r | |
610 | \r | |
611 | if ((Buffer == NULL) || (BufferSize == NULL)) {\r | |
612 | return EFI_INVALID_PARAMETER;\r | |
613 | }\r | |
614 | \r | |
615 | Offset = 0;\r | |
616 | Width = 0;\r | |
617 | Value = NULL;\r | |
618 | \r | |
619 | VA_START (Args, Number);\r | |
620 | for (Index = 0; Index < Number; Index++) {\r | |
621 | BufCfgArray = (UINT8 *) VA_ARG (Args, VOID *);\r | |
622 | EfiCopyMem (&TotalLen, BufCfgArray, sizeof (UINT32));\r | |
623 | BufferPos = BufCfgArray + sizeof (UINT32);\r | |
624 | \r | |
625 | while ((UINT32)(BufferPos - BufCfgArray) < TotalLen) {\r | |
626 | EfiCopyMem (&Offset, BufferPos, sizeof (UINT16));\r | |
627 | BufferPos += sizeof (UINT16);\r | |
628 | EfiCopyMem (&Width, BufferPos, sizeof (UINT16));\r | |
629 | BufferPos += sizeof (UINT16);\r | |
630 | Value = BufferPos;\r | |
631 | BufferPos += Width;\r | |
632 | \r | |
633 | if ((UINTN)(Offset + Width) > *BufferSize) {\r | |
634 | return EFI_BUFFER_TOO_SMALL;\r | |
635 | }\r | |
636 | \r | |
637 | EfiCopyMem ((UINT8 *)Buffer + Offset, Value, Width);\r | |
638 | }\r | |
639 | }\r | |
640 | VA_END (Args);\r | |
641 | \r | |
642 | *BufferSize = (UINTN)Offset;\r | |
643 | \r | |
644 | return EFI_SUCCESS;\r | |
645 | }\r | |
646 | \r | |
647 | STATIC\r | |
648 | VOID\r | |
649 | SwapBuffer (\r | |
650 | IN OUT UINT8 *Buffer,\r | |
651 | IN UINTN BufferSize\r | |
652 | )\r | |
653 | /*++\r | |
654 | \r | |
655 | Routine Description:\r | |
656 | Swap bytes in the buffer.\r | |
657 | \r | |
658 | Arguments:\r | |
659 | Buffer - Binary buffer.\r | |
660 | BufferSize - Size of the buffer in bytes.\r | |
661 | \r | |
662 | Returns:\r | |
663 | None.\r | |
664 | \r | |
665 | --*/\r | |
666 | {\r | |
667 | UINTN Index;\r | |
668 | UINT8 Temp;\r | |
669 | UINTN SwapCount;\r | |
670 | \r | |
671 | SwapCount = (BufferSize - 1) / 2;\r | |
672 | for (Index = 0; Index < SwapCount; Index++) {\r | |
673 | Temp = Buffer[Index];\r | |
674 | Buffer[Index] = Buffer[BufferSize - 1 - Index];\r | |
675 | Buffer[BufferSize - 1 - Index] = Temp;\r | |
676 | }\r | |
677 | }\r | |
678 | \r | |
679 | EFI_STATUS\r | |
680 | BufferToHexString (\r | |
681 | IN OUT CHAR16 *Str,\r | |
682 | IN UINT8 *Buffer,\r | |
683 | IN UINTN BufferSize\r | |
684 | )\r | |
685 | /*++\r | |
686 | \r | |
687 | Routine Description:\r | |
688 | Converts binary buffer to Unicode string in reversed byte order from BufToHexString().\r | |
689 | \r | |
690 | Arguments:\r | |
691 | Str - String for output\r | |
692 | Buffer - Binary buffer.\r | |
693 | BufferSize - Size of the buffer in bytes.\r | |
694 | \r | |
695 | Returns:\r | |
696 | EFI_SUCCESS - The function completed successfully.\r | |
697 | \r | |
698 | --*/\r | |
699 | {\r | |
700 | EFI_STATUS Status;\r | |
701 | UINT8 *NewBuffer;\r | |
702 | UINTN StrBufferLen;\r | |
703 | \r | |
704 | NewBuffer = EfiLibAllocateCopyPool (BufferSize, Buffer);\r | |
705 | SwapBuffer (NewBuffer, BufferSize);\r | |
706 | \r | |
707 | StrBufferLen = (BufferSize + 1) * sizeof (CHAR16);\r | |
708 | Status = BufToHexString (Str, &StrBufferLen, NewBuffer, BufferSize);\r | |
709 | \r | |
710 | gBS->FreePool (NewBuffer);\r | |
711 | \r | |
712 | return Status;\r | |
713 | }\r | |
714 | \r | |
715 | EFI_STATUS\r | |
716 | HexStringToBuffer (\r | |
717 | IN OUT UINT8 *Buffer,\r | |
718 | IN OUT UINTN *BufferSize,\r | |
719 | IN CHAR16 *Str\r | |
720 | )\r | |
721 | /*++\r | |
722 | \r | |
723 | Routine Description:\r | |
724 | Converts Hex String to binary buffer in reversed byte order from HexStringToBuf().\r | |
725 | \r | |
726 | Arguments:\r | |
727 | Buffer - Pointer to buffer that receives the data.\r | |
728 | BufferSize - Length in bytes of the buffer to hold converted data.\r | |
729 | If routine return with EFI_SUCCESS, containing length of converted data.\r | |
730 | If routine return with EFI_BUFFER_TOO_SMALL, containg length of buffer desired.\r | |
731 | Str - String to be converted from.\r | |
732 | \r | |
733 | Returns:\r | |
734 | EFI_SUCCESS - The function completed successfully.\r | |
735 | \r | |
736 | --*/\r | |
737 | {\r | |
738 | EFI_STATUS Status;\r | |
739 | UINTN ConvertedStrLen;\r | |
740 | \r | |
741 | ConvertedStrLen = 0;\r | |
742 | Status = HexStringToBuf (Buffer, BufferSize, Str, &ConvertedStrLen);\r | |
743 | if (!EFI_ERROR (Status)) {\r | |
744 | SwapBuffer (Buffer, ConvertedStrLen);\r | |
745 | }\r | |
746 | \r | |
747 | return Status;\r | |
748 | }\r | |
749 | \r | |
750 | EFI_STATUS\r | |
751 | ConstructConfigHdr (\r | |
752 | IN OUT CHAR16 *ConfigHdr,\r | |
753 | IN OUT UINTN *StrBufferLen,\r | |
754 | IN EFI_GUID *Guid,\r | |
755 | IN CHAR16 *Name, OPTIONAL\r | |
756 | IN EFI_HANDLE *DriverHandle\r | |
757 | )\r | |
758 | /*++\r | |
759 | \r | |
760 | Routine Description:\r | |
761 | Construct <ConfigHdr> using routing information GUID/NAME/PATH.\r | |
762 | \r | |
763 | Arguments:\r | |
764 | ConfigHdr - Pointer to the ConfigHdr string.\r | |
765 | StrBufferLen - On input: Length in bytes of buffer to hold the ConfigHdr string.\r | |
766 | Includes tailing '\0' character.\r | |
767 | On output:\r | |
768 | If return EFI_SUCCESS, containing length of ConfigHdr string buffer.\r | |
769 | If return EFI_BUFFER_TOO_SMALL, containg length of string buffer desired.\r | |
770 | Guid - Routing information: GUID.\r | |
771 | Name - Routing information: NAME.\r | |
772 | DriverHandle - Driver handle which contains the routing information: PATH.\r | |
773 | \r | |
774 | Returns:\r | |
775 | EFI_SUCCESS - Routine success.\r | |
776 | EFI_BUFFER_TOO_SMALL - The ConfigHdr string buffer is too small.\r | |
777 | \r | |
778 | --*/\r | |
779 | {\r | |
780 | EFI_STATUS Status;\r | |
781 | UINTN NameStrLen;\r | |
782 | UINTN DevicePathSize;\r | |
783 | UINTN BufferSize;\r | |
784 | CHAR16 *StrPtr;\r | |
785 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
786 | \r | |
787 | if (Name == NULL) {\r | |
788 | //\r | |
789 | // There will be no "NAME" in <ConfigHdr> for Name/Value storage\r | |
790 | //\r | |
791 | NameStrLen = 0;\r | |
792 | } else {\r | |
793 | //\r | |
794 | // For buffer storage\r | |
795 | //\r | |
796 | NameStrLen = EfiStrLen (Name);\r | |
797 | }\r | |
798 | \r | |
799 | //\r | |
800 | // Retrieve DevicePath Protocol associated with this HiiPackageList\r | |
801 | //\r | |
802 | Status = gBS->HandleProtocol (\r | |
803 | DriverHandle,\r | |
804 | &gEfiDevicePathProtocolGuid,\r | |
805 | (VOID **) &DevicePath\r | |
806 | );\r | |
807 | if (EFI_ERROR (Status)) {\r | |
808 | return Status;\r | |
809 | }\r | |
810 | \r | |
811 | DevicePathSize = EfiDevicePathSize (DevicePath);\r | |
812 | \r | |
813 | //\r | |
814 | // GUID=<HexCh>32&NAME=<Alpha>NameStrLen&PATH=<HexChar>DevicePathStrLen <NULL>\r | |
815 | // | 5 | 32 | 6 | NameStrLen | 6 | DevicePathStrLen |\r | |
816 | //\r | |
817 | BufferSize = (5 + 32 + 6 + NameStrLen + 6 + DevicePathSize * 2 + 1) * sizeof (CHAR16);\r | |
818 | if (*StrBufferLen < BufferSize) {\r | |
819 | *StrBufferLen = BufferSize;\r | |
820 | return EFI_BUFFER_TOO_SMALL;\r | |
821 | }\r | |
822 | \r | |
823 | *StrBufferLen = BufferSize;\r | |
824 | \r | |
825 | StrPtr = ConfigHdr;\r | |
826 | \r | |
827 | EfiStrCpy (StrPtr, L"GUID=");\r | |
828 | StrPtr += 5;\r | |
829 | BufferToHexString (StrPtr, (UINT8 *) Guid, sizeof (EFI_GUID));\r | |
830 | StrPtr += 32;\r | |
831 | \r | |
832 | EfiStrCpy (StrPtr, L"&NAME=");\r | |
833 | StrPtr += 6;\r | |
834 | if (Name != NULL) {\r | |
835 | EfiStrCpy (StrPtr, Name);\r | |
836 | StrPtr += NameStrLen;\r | |
837 | }\r | |
838 | \r | |
839 | EfiStrCpy (StrPtr, L"&PATH=");\r | |
840 | StrPtr += 6;\r | |
841 | BufferToHexString (StrPtr, (UINT8 *) DevicePath, DevicePathSize);\r | |
842 | \r | |
843 | return EFI_SUCCESS;\r | |
844 | }\r | |
845 | \r | |
846 | BOOLEAN\r | |
847 | FindBlockName (\r | |
848 | IN OUT CHAR16 *String,\r | |
849 | UINTN Offset,\r | |
850 | UINTN Width\r | |
851 | )\r | |
852 | /*++\r | |
853 | \r | |
854 | Routine Description:\r | |
855 | Search BlockName "&OFFSET=Offset&WIDTH=Width" in a string.\r | |
856 | \r | |
857 | Arguments:\r | |
858 | String - The string to be searched in.\r | |
859 | Offset - Offset in BlockName.\r | |
860 | Width - Width in BlockName.\r | |
861 | \r | |
862 | Returns:\r | |
863 | TRUE - Block name found.\r | |
864 | FALSE - Block name not found.\r | |
865 | \r | |
866 | --*/\r | |
867 | {\r | |
868 | EFI_STATUS Status;\r | |
869 | UINTN Data;\r | |
870 | UINTN BufferSize;\r | |
871 | UINTN ConvertedStrLen;\r | |
872 | \r | |
873 | while ((String = EfiStrStr (String, L"&OFFSET=")) != NULL) {\r | |
874 | //\r | |
875 | // Skip '&OFFSET='\r | |
876 | //\r | |
877 | String = String + 8;\r | |
878 | \r | |
879 | Data = 0;\r | |
880 | BufferSize = sizeof (UINTN);\r | |
881 | Status = HexStringToBuf ((UINT8 *) &Data, &BufferSize, String, &ConvertedStrLen);\r | |
882 | if (EFI_ERROR (Status)) {\r | |
883 | return FALSE;\r | |
884 | }\r | |
885 | String = String + ConvertedStrLen;\r | |
886 | \r | |
887 | if (Data != Offset) {\r | |
888 | continue;\r | |
889 | }\r | |
890 | \r | |
891 | if (EfiStrnCmp (String, L"&WIDTH=", 7) != 0) {\r | |
892 | return FALSE;\r | |
893 | }\r | |
894 | String = String + 7;\r | |
895 | \r | |
896 | Data = 0;\r | |
897 | BufferSize = sizeof (UINTN);\r | |
898 | Status = HexStringToBuf ((UINT8 *) &Data, &BufferSize, String, &ConvertedStrLen);\r | |
899 | if (EFI_ERROR (Status)) {\r | |
900 | return FALSE;\r | |
901 | }\r | |
902 | if (Data == Width) {\r | |
903 | return TRUE;\r | |
904 | }\r | |
905 | \r | |
906 | String = String + ConvertedStrLen;\r | |
907 | }\r | |
908 | \r | |
909 | return FALSE;\r | |
910 | }\r | |
911 | \r | |
912 | EFI_STATUS\r | |
913 | GetBrowserData (\r | |
914 | EFI_GUID *VariableGuid, OPTIONAL\r | |
915 | CHAR16 *VariableName, OPTIONAL\r | |
916 | UINTN *BufferSize,\r | |
917 | UINT8 *Buffer\r | |
918 | )\r | |
919 | /*++\r | |
920 | \r | |
921 | Routine Description:\r | |
922 | This routine is invoked by ConfigAccess.Callback() to retrived uncommitted data from Form Browser.\r | |
923 | \r | |
924 | Arguments:\r | |
925 | VariableGuid - An optional field to indicate the target variable GUID name to use.\r | |
926 | VariableName - An optional field to indicate the target human-readable variable name.\r | |
927 | BufferSize - On input: Length in bytes of buffer to hold retrived data.\r | |
928 | On output:\r | |
929 | If return EFI_BUFFER_TOO_SMALL, containg length of buffer desired.\r | |
930 | Buffer - Buffer to hold retrived data.\r | |
931 | \r | |
932 | Returns:\r | |
933 | EFI_SUCCESS - Routine success.\r | |
934 | EFI_BUFFER_TOO_SMALL - The intput buffer is too small.\r | |
935 | \r | |
936 | --*/\r | |
937 | {\r | |
938 | EFI_STATUS Status;\r | |
939 | CHAR16 *ConfigHdr;\r | |
940 | CHAR16 *ConfigResp;\r | |
941 | CHAR16 *StringPtr;\r | |
942 | UINTN HeaderLen;\r | |
943 | UINTN BufferLen;\r | |
944 | CHAR16 *Progress;\r | |
945 | EFI_FORM_BROWSER2_PROTOCOL *FormBrowser2;\r | |
946 | EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;\r | |
947 | \r | |
948 | //\r | |
949 | // Locate protocols for use\r | |
950 | //\r | |
951 | Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &FormBrowser2);\r | |
952 | if (EFI_ERROR (Status)) {\r | |
953 | return Status;\r | |
954 | }\r | |
955 | \r | |
956 | Status = gBS->LocateProtocol (&gEfiHiiConfigRoutingProtocolGuid, NULL, (VOID **) &HiiConfigRouting);\r | |
957 | if (EFI_ERROR (Status)) {\r | |
958 | return Status;\r | |
959 | }\r | |
960 | \r | |
961 | //\r | |
962 | // Retrive formset storage data from Form Browser\r | |
963 | //\r | |
964 | ConfigHdr = mFakeConfigHdr;\r | |
965 | HeaderLen = EfiStrLen (ConfigHdr);\r | |
966 | \r | |
967 | BufferLen = 0x4000;\r | |
968 | ConfigResp = EfiLibAllocateZeroPool (BufferLen + HeaderLen);\r | |
969 | \r | |
970 | StringPtr = ConfigResp + HeaderLen;\r | |
971 | *StringPtr = L'&';\r | |
972 | StringPtr++;\r | |
973 | \r | |
974 | Status = FormBrowser2->BrowserCallback (\r | |
975 | FormBrowser2,\r | |
976 | &BufferLen,\r | |
977 | StringPtr,\r | |
978 | TRUE,\r | |
979 | VariableGuid,\r | |
980 | VariableName\r | |
981 | );\r | |
982 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
983 | gBS->FreePool (ConfigResp);\r | |
984 | ConfigResp = EfiLibAllocateZeroPool (BufferLen + HeaderLen);\r | |
985 | \r | |
986 | StringPtr = ConfigResp + HeaderLen;\r | |
987 | *StringPtr = L'&';\r | |
988 | StringPtr++;\r | |
989 | \r | |
990 | Status = FormBrowser2->BrowserCallback (\r | |
991 | FormBrowser2,\r | |
992 | &BufferLen,\r | |
993 | StringPtr,\r | |
994 | TRUE,\r | |
995 | VariableGuid,\r | |
996 | VariableName\r | |
997 | );\r | |
998 | }\r | |
999 | if (EFI_ERROR (Status)) {\r | |
1000 | gBS->FreePool (ConfigResp);\r | |
1001 | return Status;\r | |
1002 | }\r | |
1003 | EfiCopyMem (ConfigResp, ConfigHdr, HeaderLen * sizeof (UINT16));\r | |
1004 | \r | |
1005 | //\r | |
1006 | // Convert <ConfigResp> to buffer data\r | |
1007 | //\r | |
1008 | Status = HiiConfigRouting->ConfigToBlock (\r | |
1009 | HiiConfigRouting,\r | |
1010 | ConfigResp,\r | |
1011 | Buffer,\r | |
1012 | BufferSize,\r | |
1013 | &Progress\r | |
1014 | );\r | |
1015 | gBS->FreePool (ConfigResp);\r | |
1016 | \r | |
1017 | return Status;\r | |
1018 | }\r | |
1019 | \r | |
1020 | EFI_STATUS\r | |
1021 | SetBrowserData (\r | |
1022 | EFI_GUID *VariableGuid, OPTIONAL\r | |
1023 | CHAR16 *VariableName, OPTIONAL\r | |
1024 | UINTN BufferSize,\r | |
1025 | UINT8 *Buffer,\r | |
1026 | CHAR16 *RequestElement OPTIONAL\r | |
1027 | )\r | |
1028 | /*++\r | |
1029 | \r | |
1030 | Routine Description:\r | |
1031 | This routine is invoked by ConfigAccess.Callback() to update uncommitted data of Form Browser.\r | |
1032 | \r | |
1033 | Arguments:\r | |
1034 | VariableGuid - An optional field to indicate the target variable GUID name to use.\r | |
1035 | VariableName - An optional field to indicate the target human-readable variable name.\r | |
1036 | BufferSize - Length in bytes of buffer to hold retrived data.\r | |
1037 | Buffer - Buffer to hold retrived data.\r | |
1038 | RequestElement - An optional field to specify which part of the buffer data\r | |
1039 | will be send back to Browser. If NULL, the whole buffer of\r | |
1040 | data will be committed to Browser.\r | |
1041 | <RequestElement> ::= &OFFSET=<Number>&WIDTH=<Number>*\r | |
1042 | \r | |
1043 | Returns:\r | |
1044 | EFI_SUCCESS - Routine success.\r | |
1045 | Other - Updating Browser uncommitted data failed.\r | |
1046 | \r | |
1047 | --*/\r | |
1048 | {\r | |
1049 | EFI_STATUS Status;\r | |
1050 | CHAR16 *ConfigHdr;\r | |
1051 | CHAR16 *ConfigResp;\r | |
1052 | CHAR16 *StringPtr;\r | |
1053 | UINTN HeaderLen;\r | |
1054 | UINTN BufferLen;\r | |
1055 | CHAR16 *Progress;\r | |
1056 | EFI_FORM_BROWSER2_PROTOCOL *FormBrowser2;\r | |
1057 | EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;\r | |
1058 | CHAR16 BlockName[33];\r | |
1059 | CHAR16 *ConfigRequest;\r | |
1060 | CHAR16 *Request;\r | |
1061 | \r | |
1062 | //\r | |
1063 | // Locate protocols for use\r | |
1064 | //\r | |
1065 | Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &FormBrowser2);\r | |
1066 | if (EFI_ERROR (Status)) {\r | |
1067 | return Status;\r | |
1068 | }\r | |
1069 | \r | |
1070 | Status = gBS->LocateProtocol (&gEfiHiiConfigRoutingProtocolGuid, NULL, (VOID **) &HiiConfigRouting);\r | |
1071 | if (EFI_ERROR (Status)) {\r | |
1072 | return Status;\r | |
1073 | }\r | |
1074 | \r | |
1075 | //\r | |
1076 | // Prepare <ConfigRequest>\r | |
1077 | //\r | |
1078 | ConfigHdr = mFakeConfigHdr;\r | |
1079 | HeaderLen = EfiStrLen (ConfigHdr);\r | |
1080 | \r | |
1081 | if (RequestElement == NULL) {\r | |
1082 | //\r | |
1083 | // RequestElement not specified, use "&OFFSET=0&WIDTH=<BufferSize>" as <BlockName>\r | |
1084 | //\r | |
1085 | BlockName[0] = L'\0';\r | |
1086 | EfiStrCpy (BlockName, L"&OFFSET=0&WIDTH=");\r | |
1087 | \r | |
1088 | //\r | |
1089 | // String lenghth of L"&OFFSET=0&WIDTH=" is 16\r | |
1090 | //\r | |
1091 | StringPtr = BlockName + 16;\r | |
1092 | BufferLen = sizeof (BlockName) - (16 * sizeof (CHAR16));\r | |
1093 | BufToHexString (StringPtr, &BufferLen, (UINT8 *) &BufferSize, sizeof (UINTN));\r | |
1094 | \r | |
1095 | Request = BlockName;\r | |
1096 | } else {\r | |
1097 | Request = RequestElement;\r | |
1098 | }\r | |
1099 | \r | |
1100 | BufferLen = HeaderLen * sizeof (CHAR16) + EfiStrSize (Request);\r | |
1101 | ConfigRequest = EfiLibAllocateZeroPool (BufferLen);\r | |
1102 | \r | |
1103 | EfiCopyMem (ConfigRequest, ConfigHdr, HeaderLen * sizeof (CHAR16));\r | |
1104 | StringPtr = ConfigRequest + HeaderLen;\r | |
1105 | EfiStrCpy (StringPtr, Request);\r | |
1106 | \r | |
1107 | //\r | |
1108 | // Convert buffer to <ConfigResp>\r | |
1109 | //\r | |
1110 | Status = HiiConfigRouting->BlockToConfig (\r | |
1111 | HiiConfigRouting,\r | |
1112 | ConfigRequest,\r | |
1113 | Buffer,\r | |
1114 | BufferSize,\r | |
1115 | &ConfigResp,\r | |
1116 | &Progress\r | |
1117 | );\r | |
1118 | if (EFI_ERROR (Status)) {\r | |
1119 | gBS->FreePool (ConfigResp);\r | |
1120 | return Status;\r | |
1121 | }\r | |
1122 | \r | |
1123 | //\r | |
1124 | // Skip <ConfigHdr> and '&'\r | |
1125 | //\r | |
1126 | StringPtr = ConfigResp + HeaderLen + 1;\r | |
1127 | \r | |
1128 | //\r | |
1129 | // Change uncommitted data in Browser\r | |
1130 | //\r | |
1131 | Status = FormBrowser2->BrowserCallback (\r | |
1132 | FormBrowser2,\r | |
1133 | &BufferSize,\r | |
1134 | StringPtr,\r | |
1135 | FALSE,\r | |
1136 | NULL,\r | |
1137 | NULL\r | |
1138 | );\r | |
1139 | gBS->FreePool (ConfigResp);\r | |
1140 | return Status;\r | |
1141 | }\r |