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b290614d | 1 | /** @file\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 | PlatDriOverLib.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | #include "PlatDriOver.h"\r | |
22 | \r | |
23 | STATIC LIST_ENTRY mDevicePathStack = INITIALIZE_LIST_HEAD_VARIABLE (mDevicePathStack);\r | |
24 | \r | |
25 | \r | |
26 | /**\r | |
27 | Install the Platform Driver Override Protocol, and ensure there is only one Platform Driver Override Protocol\r | |
28 | in the system.\r | |
29 | \r | |
30 | @param gPlatformDriverOverride PlatformDriverOverride protocol interface which\r | |
31 | needs to be installed\r | |
32 | \r | |
33 | @retval EFI_ALREADY_STARTED There has been a Platform Driver Override\r | |
34 | Protocol in the system, cannot install it again.\r | |
35 | @retval Other Returned by InstallProtocolInterface\r | |
36 | \r | |
37 | **/\r | |
38 | EFI_STATUS\r | |
39 | EFIAPI\r | |
40 | InstallPlatformDriverOverrideProtocol (\r | |
41 | EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL *gPlatformDriverOverride\r | |
42 | )\r | |
43 | {\r | |
44 | EFI_HANDLE Handle;\r | |
45 | EFI_STATUS Status;\r | |
46 | UINTN HandleCount;\r | |
47 | EFI_HANDLE *HandleBuffer;\r | |
48 | \r | |
49 | //\r | |
50 | // There will be only one platform driver override protocol in the system\r | |
51 | // If there is another out there, someone is trying to install us again,\r | |
52 | // Fail that scenario.\r | |
53 | //\r | |
54 | Status = gBS->LocateHandleBuffer (\r | |
55 | ByProtocol,\r | |
56 | &gEfiPlatformDriverOverrideProtocolGuid,\r | |
57 | NULL,\r | |
58 | &HandleCount,\r | |
59 | &HandleBuffer\r | |
60 | );\r | |
61 | //\r | |
62 | // If there was no error, assume there is an installation and return error\r | |
63 | //\r | |
64 | if (!EFI_ERROR (Status)) {\r | |
65 | if (HandleBuffer != NULL) {\r | |
3012ce5c | 66 | FreePool (HandleBuffer);\r |
b290614d | 67 | }\r |
68 | return EFI_ALREADY_STARTED;\r | |
69 | }\r | |
70 | \r | |
71 | //\r | |
72 | // Install platform driver override protocol\r | |
73 | //\r | |
74 | Handle = NULL;\r | |
75 | Status = gBS->InstallProtocolInterface (\r | |
76 | &Handle,\r | |
77 | &gEfiPlatformDriverOverrideProtocolGuid,\r | |
78 | EFI_NATIVE_INTERFACE,\r | |
79 | gPlatformDriverOverride\r | |
80 | );\r | |
81 | return Status;\r | |
82 | }\r | |
83 | \r | |
84 | \r | |
85 | /**\r | |
86 | Free all the mapping database memory resource and initialize the mapping list entry\r | |
87 | \r | |
88 | @param MappingDataBase Mapping database list entry pointer\r | |
89 | \r | |
90 | @retval EFI_INVALID_PARAMETER mapping database list entry is NULL\r | |
91 | @retval EFI_SUCCESS Free success\r | |
92 | \r | |
93 | **/\r | |
94 | EFI_STATUS\r | |
95 | EFIAPI\r | |
96 | FreeMappingDatabase (\r | |
97 | IN OUT LIST_ENTRY *MappingDataBase\r | |
98 | )\r | |
99 | {\r | |
100 | LIST_ENTRY *OverrideItemListIndex;\r | |
101 | LIST_ENTRY *ImageInfoListIndex;\r | |
102 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
103 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
104 | \r | |
105 | if (MappingDataBase == NULL) {\r | |
106 | return EFI_INVALID_PARAMETER;\r | |
107 | }\r | |
108 | \r | |
109 | OverrideItemListIndex = MappingDataBase->ForwardLink;\r | |
110 | while (OverrideItemListIndex != MappingDataBase){\r | |
111 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
112 | //\r | |
113 | // Free PLATFORM_OVERRIDE_ITEM.ControllerDevicePath[]\r | |
114 | //\r | |
115 | if (OverrideItem->ControllerDevicePath != NULL){\r | |
116 | FreePool(OverrideItem->ControllerDevicePath);\r | |
117 | }\r | |
118 | \r | |
119 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
120 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
121 | //\r | |
122 | // Free all DRIVER_IMAGE_INFO.DriverImagePath[]\r | |
123 | //\r | |
124 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
125 | if (DriverImageInfo->DriverImagePath != NULL) {\r | |
126 | FreePool(DriverImageInfo->DriverImagePath);\r | |
127 | }\r | |
128 | //\r | |
129 | // Free DRIVER_IMAGE_INFO itself\r | |
130 | //\r | |
131 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
132 | RemoveEntryList (&DriverImageInfo->Link);\r | |
133 | FreePool (DriverImageInfo);\r | |
134 | }\r | |
135 | //\r | |
136 | // Free PLATFORM_OVERRIDE_ITEM itself\r | |
137 | //\r | |
138 | OverrideItemListIndex = OverrideItemListIndex->ForwardLink;\r | |
139 | RemoveEntryList (&OverrideItem->Link);\r | |
140 | FreePool (OverrideItem);\r | |
141 | }\r | |
142 | \r | |
143 | InitializeListHead (MappingDataBase);\r | |
144 | return EFI_SUCCESS;\r | |
145 | }\r | |
146 | \r | |
147 | \r | |
148 | /**\r | |
149 | Read the environment variable(s) that contain the override mappings from Controller Device Path to\r | |
150 | a set of Driver Device Paths, and create the mapping database in memory with those variable info.\r | |
151 | VariableLayout{\r | |
152 | //\r | |
153 | // NotEnd indicate whether the variable is the last one, and has no subsequent variable need to load.\r | |
154 | // Each variable has MaximumVariableSize limitation, so we maybe need multi variables to store\r | |
155 | // large mapping infos.\r | |
156 | // The variable(s) name rule is PlatDriOver, PlatDriOver1, PlatDriOver2, ....\r | |
157 | //\r | |
158 | UINT32 NotEnd;\r | |
159 | //\r | |
160 | // The entry which contains the mapping that Controller Device Path to a set of Driver Device Paths\r | |
161 | // There are often multi mapping entries in a variable.\r | |
162 | //\r | |
163 | UINT32 SIGNATURE; //EFI_SIGNATURE_32('p','d','o','i')\r | |
164 | UINT32 DriverNum;\r | |
165 | EFI_DEVICE_PATH_PROTOCOL ControllerDevicePath[];\r | |
166 | EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];\r | |
167 | EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];\r | |
168 | EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];\r | |
169 | ......\r | |
170 | UINT32 SIGNATURE;\r | |
171 | UINT32 DriverNum;\r | |
172 | EFI_DEVICE_PATH_PROTOCOL ControllerDevicePath[];\r | |
173 | EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];\r | |
174 | EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];\r | |
175 | EFI_DEVICE_PATH_PROTOCOL DriverDevicePath[];\r | |
176 | ......\r | |
177 | }\r | |
178 | typedef struct _PLATFORM_OVERRIDE_ITEM{\r | |
179 | UINTN Signature; //EFI_SIGNATURE_32('p','d','o','i')\r | |
180 | LIST_ENTRY Link;\r | |
181 | UINT32 DriverInfoNum;\r | |
182 | EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath;\r | |
183 | LIST_ENTRY DriverInfoList; //DRIVER_IMAGE_INFO List\r | |
184 | } PLATFORM_OVERRIDE_ITEM;\r | |
185 | typedef struct _DRIVER_IMAGE_INFO{\r | |
186 | UINTN Signature; //EFI_SIGNATURE_32('p','d','i','i')\r | |
187 | LIST_ENTRY Link;\r | |
188 | EFI_HANDLE ImageHandle;\r | |
189 | EFI_DEVICE_PATH_PROTOCOL *DriverImagePath;\r | |
190 | BOOLEAN UnLoadable;\r | |
191 | BOOLEAN UnStartable;\r | |
192 | } DRIVER_IMAGE_INFO;\r | |
193 | \r | |
194 | @param MappingDataBase Mapping database list entry pointer\r | |
195 | \r | |
196 | @retval EFI_INVALID_PARAMETER MappingDataBase pointer is null\r | |
197 | @retval EFI_NOT_FOUND Cannot find the 'PlatDriOver' NV variable\r | |
198 | @retval EFI_VOLUME_CORRUPTED The found NV variable is corrupted\r | |
199 | @retval EFI_SUCCESS Create the mapping database in memory\r | |
200 | successfully\r | |
201 | \r | |
202 | **/\r | |
203 | EFI_STATUS\r | |
204 | EFIAPI\r | |
205 | InitOverridesMapping (\r | |
206 | OUT LIST_ENTRY *MappingDataBase\r | |
207 | )\r | |
208 | {\r | |
209 | UINTN BufferSize;\r | |
210 | VOID *VariableBuffer;\r | |
211 | UINT8 *VariableIndex;\r | |
212 | UINTN VariableNum;\r | |
213 | CHAR16 OverrideVariableName[40];\r | |
214 | UINT32 NotEnd;\r | |
215 | UINT32 DriverNumber;\r | |
216 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
217 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
218 | BOOLEAN Corrupted;\r | |
219 | UINT32 Signature;\r | |
220 | EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath;\r | |
221 | EFI_DEVICE_PATH_PROTOCOL *DriverDevicePath;\r | |
222 | UINTN Index;\r | |
223 | \r | |
224 | if (MappingDataBase == NULL) {\r | |
225 | return EFI_INVALID_PARAMETER;\r | |
226 | }\r | |
227 | \r | |
228 | VariableNum = 0;\r | |
229 | Corrupted = FALSE;\r | |
230 | //\r | |
231 | // Check the environment variable(s) that contain the override mappings .\r | |
232 | //\r | |
233 | VariableBuffer = GetVariableAndSize (L"PlatDriOver", &gEfiOverrideVariableGuid, &BufferSize);\r | |
234 | ASSERT ((UINTN) VariableBuffer % sizeof(UINTN) == 0);\r | |
235 | VariableNum ++;\r | |
236 | if (VariableBuffer == NULL) {\r | |
237 | return EFI_NOT_FOUND;\r | |
238 | }\r | |
239 | \r | |
240 | do {\r | |
241 | VariableIndex = VariableBuffer;\r | |
242 | NotEnd = *(UINT32*) VariableIndex;\r | |
243 | VariableIndex = VariableIndex + sizeof (UINT32);\r | |
244 | while (VariableIndex < ((UINT8 *)VariableBuffer + BufferSize)) {\r | |
245 | OverrideItem = AllocateZeroPool (sizeof (PLATFORM_OVERRIDE_ITEM));\r | |
246 | ASSERT (OverrideItem != NULL);\r | |
247 | OverrideItem->Signature = PLATFORM_OVERRIDE_ITEM_SIGNATURE;\r | |
248 | InitializeListHead (&OverrideItem->DriverInfoList);\r | |
249 | //\r | |
250 | // Check SIGNATURE\r | |
251 | //\r | |
252 | Signature = *(UINT32 *) VariableIndex;\r | |
253 | VariableIndex = VariableIndex + sizeof (UINT32);\r | |
254 | if (Signature != PLATFORM_OVERRIDE_ITEM_SIGNATURE) {\r | |
255 | FreePool (OverrideItem);\r | |
256 | Corrupted = TRUE;\r | |
257 | break;\r | |
258 | }\r | |
259 | //\r | |
260 | // Get DriverNum\r | |
261 | //\r | |
262 | DriverNumber = *(UINT32*) VariableIndex;\r | |
263 | OverrideItem->DriverInfoNum = DriverNumber;\r | |
264 | VariableIndex = VariableIndex + sizeof (UINT32);\r | |
265 | //\r | |
266 | // Get ControllerDevicePath[]\r | |
267 | //\r | |
268 | ControllerDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) VariableIndex;\r | |
269 | OverrideItem->ControllerDevicePath = DuplicateDevicePath (ControllerDevicePath);\r | |
270 | VariableIndex = VariableIndex + GetDevicePathSize (ControllerDevicePath);\r | |
271 | //\r | |
272 | // Align the VariableIndex since the controller device path may not be aligned, refer to the SaveOverridesMapping()\r | |
273 | //\r | |
274 | VariableIndex += ((sizeof(UINT32) - ((UINTN) (VariableIndex))) & (sizeof(UINT32) - 1));\r | |
275 | \r | |
276 | //\r | |
277 | // Get all DriverDevicePath[]\r | |
278 | //\r | |
279 | for (Index = 0; Index < DriverNumber; Index++) {\r | |
280 | DriverImageInfo = AllocateZeroPool (sizeof (DRIVER_IMAGE_INFO));\r | |
281 | ASSERT (DriverImageInfo != NULL);\r | |
282 | DriverImageInfo->Signature = DRIVER_IMAGE_INFO_SIGNATURE;\r | |
283 | \r | |
284 | DriverDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) VariableIndex;\r | |
285 | DriverImageInfo->DriverImagePath = DuplicateDevicePath (DriverDevicePath);\r | |
286 | VariableIndex = VariableIndex + GetDevicePathSize (DriverDevicePath);\r | |
287 | //\r | |
288 | // Align the VariableIndex since the driver image device path may not be aligned, refer to the SaveOverridesMapping()\r | |
289 | //\r | |
290 | VariableIndex += ((sizeof(UINT32) - ((UINTN) (VariableIndex))) & (sizeof(UINT32) - 1));\r | |
291 | \r | |
292 | InsertTailList (&OverrideItem->DriverInfoList, &DriverImageInfo->Link);\r | |
293 | }\r | |
294 | InsertTailList (MappingDataBase, &OverrideItem->Link);\r | |
295 | }\r | |
296 | \r | |
297 | FreePool (VariableBuffer);\r | |
298 | if (Corrupted) {\r | |
299 | FreeMappingDatabase (MappingDataBase);\r | |
300 | return EFI_VOLUME_CORRUPTED;\r | |
301 | }\r | |
302 | \r | |
303 | //\r | |
304 | // If has other variable(PlatDriOver1, PlatDriOver2, PlatDriOver3.....), get them.\r | |
305 | // NotEnd indicate whether current variable is the end variable.\r | |
306 | //\r | |
307 | if (NotEnd != 0) {\r | |
308 | UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", VariableNum);\r | |
309 | VariableBuffer = GetVariableAndSize (OverrideVariableName, &gEfiOverrideVariableGuid, &BufferSize);\r | |
310 | ASSERT ((UINTN) VariableBuffer % sizeof(UINTN) == 0);\r | |
311 | VariableNum ++;\r | |
312 | if (VariableBuffer == NULL) {\r | |
313 | FreeMappingDatabase (MappingDataBase);\r | |
314 | return EFI_VOLUME_CORRUPTED;\r | |
315 | }\r | |
316 | }\r | |
317 | \r | |
318 | } while (NotEnd != 0);\r | |
319 | \r | |
320 | return EFI_SUCCESS;\r | |
321 | }\r | |
322 | \r | |
323 | \r | |
324 | /**\r | |
325 | Calculate the needed size in NV variable for recording a specific PLATFORM_OVERRIDE_ITEM info\r | |
326 | \r | |
327 | @param OverrideItemListIndex a list entry point to a specific\r | |
328 | PLATFORM_OVERRIDE_ITEM\r | |
329 | \r | |
330 | @return The needed size number\r | |
331 | \r | |
332 | **/\r | |
333 | UINTN\r | |
334 | EFIAPI\r | |
335 | GetOneItemNeededSize (\r | |
336 | IN LIST_ENTRY *OverrideItemListIndex\r | |
337 | )\r | |
338 | {\r | |
339 | UINTN NeededSize;\r | |
340 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
341 | LIST_ENTRY *ImageInfoListIndex;\r | |
342 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
343 | \r | |
344 | \r | |
345 | NeededSize = 0;\r | |
346 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
347 | NeededSize += sizeof (UINT32); //UINT32 SIGNATURE;\r | |
348 | NeededSize += sizeof (UINT32); //UINT32 DriverNum;\r | |
349 | NeededSize += GetDevicePathSize (OverrideItem->ControllerDevicePath); // ControllerDevicePath\r | |
350 | //\r | |
351 | // Align the controller device path\r | |
352 | //\r | |
353 | NeededSize += ((sizeof(UINT32) - ((UINTN) GetDevicePathSize (OverrideItem->ControllerDevicePath))) \\r | |
354 | & (sizeof(UINT32) - 1));\r | |
355 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
356 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
357 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
358 | NeededSize += GetDevicePathSize (DriverImageInfo->DriverImagePath); //DriverDevicePath\r | |
359 | //\r | |
360 | // Align the driver image device path\r | |
361 | //\r | |
362 | NeededSize += ((sizeof(UINT32) - ((UINTN) GetDevicePathSize (DriverImageInfo->DriverImagePath))) \\r | |
363 | & (sizeof(UINT32) - 1));\r | |
364 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
365 | }\r | |
366 | \r | |
367 | return NeededSize;\r | |
368 | }\r | |
369 | \r | |
370 | \r | |
371 | \r | |
372 | /**\r | |
373 | Save the memory mapping database into NV environment variable(s)\r | |
374 | \r | |
375 | @param MappingDataBase Mapping database list entry pointer\r | |
376 | \r | |
377 | @retval EFI_INVALID_PARAMETER MappingDataBase pointer is null\r | |
378 | @retval EFI_SUCCESS Save memory mapping database successfully\r | |
379 | \r | |
380 | **/\r | |
381 | EFI_STATUS\r | |
382 | EFIAPI\r | |
383 | SaveOverridesMapping (\r | |
384 | IN LIST_ENTRY *MappingDataBase\r | |
385 | )\r | |
386 | {\r | |
387 | EFI_STATUS Status;\r | |
388 | VOID *VariableBuffer;\r | |
389 | UINT8 *VariableIndex;\r | |
390 | UINTN NumIndex;\r | |
391 | CHAR16 OverrideVariableName[40];\r | |
392 | UINT32 NotEnd;\r | |
393 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
394 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
395 | LIST_ENTRY *OverrideItemListIndex;\r | |
396 | LIST_ENTRY *ItemIndex;\r | |
397 | LIST_ENTRY *ImageInfoListIndex;\r | |
398 | UINTN VariableNeededSize;\r | |
399 | UINTN SavedSize;\r | |
400 | UINT64 MaximumVariableStorageSize;\r | |
401 | UINT64 RemainingVariableStorageSize;\r | |
402 | UINT64 MaximumVariableSize;\r | |
403 | UINTN OneItemNeededSize;\r | |
404 | \r | |
405 | if (MappingDataBase == NULL) {\r | |
406 | return EFI_INVALID_PARAMETER;\r | |
407 | }\r | |
408 | \r | |
409 | if (MappingDataBase->ForwardLink == MappingDataBase) {\r | |
410 | Status = DeleteOverridesVariables ();\r | |
411 | return EFI_SUCCESS;\r | |
412 | }\r | |
413 | \r | |
414 | //\r | |
415 | // Get the the maximum size of an individual EFI variable in current system\r | |
416 | //\r | |
417 | gRT->QueryVariableInfo (\r | |
418 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
419 | &MaximumVariableStorageSize,\r | |
420 | &RemainingVariableStorageSize,\r | |
421 | &MaximumVariableSize\r | |
422 | );\r | |
423 | \r | |
424 | NumIndex = 0;\r | |
425 | OverrideItemListIndex = MappingDataBase->ForwardLink;\r | |
426 | while (OverrideItemListIndex != MappingDataBase) {\r | |
427 | //\r | |
428 | // Try to find the most proper variable size which <= MaximumVariableSize, but can contain mapping info as much as possible\r | |
429 | //\r | |
430 | VariableNeededSize = 0;\r | |
431 | VariableNeededSize += sizeof (UINT32); //BOOLEAN NotEnd;\r | |
432 | ItemIndex = OverrideItemListIndex;\r | |
433 | NotEnd = FALSE;\r | |
434 | \r | |
435 | while (ItemIndex != MappingDataBase){\r | |
436 | OneItemNeededSize = GetOneItemNeededSize (ItemIndex);\r | |
437 | if ((VariableNeededSize +\r | |
438 | OneItemNeededSize +\r | |
439 | sizeof (VARIABLE_HEADER) +\r | |
440 | StrSize (L"PlatDriOver ")\r | |
441 | ) >= MaximumVariableSize\r | |
442 | ) {\r | |
443 | NotEnd = TRUE;\r | |
444 | break;\r | |
445 | }\r | |
446 | \r | |
447 | VariableNeededSize += GetOneItemNeededSize (ItemIndex);\r | |
448 | ItemIndex = ItemIndex->ForwardLink;\r | |
449 | }\r | |
450 | \r | |
451 | if (NotEnd) {\r | |
452 | if (VariableNeededSize == sizeof (UINT32)) {\r | |
453 | //\r | |
454 | // If an individual EFI variable cannot contain a single Item, return error\r | |
455 | //\r | |
456 | return EFI_OUT_OF_RESOURCES;\r | |
457 | }\r | |
458 | }\r | |
459 | \r | |
460 | //\r | |
461 | // VariableNeededSize is the most proper variable size, allocate variable buffer\r | |
462 | // ItemIndex now points to the next PLATFORM_OVERRIDE_ITEM which is not covered by VariableNeededSize\r | |
463 | //\r | |
464 | VariableBuffer = AllocateZeroPool (VariableNeededSize);\r | |
465 | ASSERT ((UINTN) VariableBuffer % sizeof(UINTN) == 0);\r | |
466 | \r | |
467 | //\r | |
468 | // Fill the variable buffer according to MappingDataBase\r | |
469 | //\r | |
470 | SavedSize = 0;\r | |
471 | VariableIndex = VariableBuffer;\r | |
472 | *(UINT32 *) VariableIndex = NotEnd;\r | |
473 | VariableIndex += sizeof (UINT32); // pass NoEnd\r | |
474 | SavedSize += sizeof (UINT32);\r | |
475 | //\r | |
476 | // ItemIndex points to the next PLATFORM_OVERRIDE_ITEM which is not covered by VariableNeededSize\r | |
477 | //\r | |
478 | while (OverrideItemListIndex != ItemIndex){\r | |
479 | *(UINT32 *) VariableIndex = PLATFORM_OVERRIDE_ITEM_SIGNATURE;\r | |
480 | VariableIndex += sizeof (UINT32); // pass SIGNATURE\r | |
481 | SavedSize += sizeof (UINT32);\r | |
482 | \r | |
483 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
484 | *(UINT32 *) VariableIndex = OverrideItem->DriverInfoNum;\r | |
485 | VariableIndex += sizeof (UINT32); // pass DriverNum\r | |
486 | SavedSize += sizeof (UINT32);\r | |
487 | \r | |
488 | CopyMem (VariableIndex, OverrideItem->ControllerDevicePath, GetDevicePathSize (OverrideItem->ControllerDevicePath));\r | |
489 | VariableIndex += GetDevicePathSize (OverrideItem->ControllerDevicePath); // pass ControllerDevicePath\r | |
490 | SavedSize += GetDevicePathSize (OverrideItem->ControllerDevicePath);\r | |
491 | \r | |
492 | //\r | |
493 | // Align the VariableIndex since the controller device path may not be aligned\r | |
494 | //\r | |
495 | SavedSize += ((sizeof(UINT32) - ((UINTN) (VariableIndex))) & (sizeof(UINT32) - 1));\r | |
496 | VariableIndex += ((sizeof(UINT32) - ((UINTN) (VariableIndex))) & (sizeof(UINT32) - 1));\r | |
497 | \r | |
498 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
499 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
500 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
501 | CopyMem (VariableIndex, DriverImageInfo->DriverImagePath, GetDevicePathSize (DriverImageInfo->DriverImagePath));\r | |
502 | VariableIndex += GetDevicePathSize (DriverImageInfo->DriverImagePath); // pass DriverImageDevicePath\r | |
503 | SavedSize += GetDevicePathSize (DriverImageInfo->DriverImagePath);\r | |
504 | //\r | |
505 | // Align the VariableIndex since the driver image device path may not be aligned\r | |
506 | //\r | |
507 | SavedSize += ((sizeof(UINT32) - ((UINTN) (VariableIndex))) & (sizeof(UINT32) - 1));\r | |
508 | VariableIndex += ((sizeof(UINT32) - ((UINTN) (VariableIndex))) & (sizeof(UINT32) - 1));\r | |
509 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
510 | }\r | |
511 | \r | |
512 | OverrideItemListIndex = OverrideItemListIndex->ForwardLink;\r | |
513 | }\r | |
514 | \r | |
515 | ASSERT (SavedSize == VariableNeededSize);\r | |
516 | \r | |
517 | if (NumIndex == 0) {\r | |
518 | UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver");\r | |
519 | } else {\r | |
520 | UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", NumIndex );\r | |
521 | }\r | |
522 | \r | |
523 | Status = gRT->SetVariable (\r | |
524 | OverrideVariableName,\r | |
525 | &gEfiOverrideVariableGuid,\r | |
526 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
527 | VariableNeededSize,\r | |
528 | VariableBuffer\r | |
529 | );\r | |
530 | ASSERT (!EFI_ERROR(Status));\r | |
531 | \r | |
532 | NumIndex ++;\r | |
533 | FreePool (VariableBuffer);\r | |
534 | }\r | |
535 | \r | |
536 | return EFI_SUCCESS;\r | |
537 | }\r | |
538 | \r | |
3012ce5c | 539 | /**\r |
540 | Get the first Binding protocol which has the specific image handle\r | |
541 | \r | |
542 | @param Image Image handle\r | |
543 | \r | |
544 | @return Pointer into the Binding Protocol interface\r | |
545 | \r | |
546 | **/\r | |
547 | EFI_DRIVER_BINDING_PROTOCOL *\r | |
548 | EFIAPI\r | |
549 | GetBindingProtocolFromImageHandle (\r | |
550 | IN EFI_HANDLE ImageHandle,\r | |
551 | OUT EFI_HANDLE *BindingHandle\r | |
552 | )\r | |
553 | {\r | |
554 | EFI_STATUS Status;\r | |
555 | UINTN Index;\r | |
556 | UINTN DriverBindingHandleCount;\r | |
557 | EFI_HANDLE *DriverBindingHandleBuffer;\r | |
558 | EFI_DRIVER_BINDING_PROTOCOL *DriverBindingInterface;\r | |
559 | \r | |
560 | if (BindingHandle == NULL || ImageHandle == NULL) {\r | |
561 | return NULL;\r | |
562 | }\r | |
563 | //\r | |
564 | // Get all driver which support binding protocol in second page\r | |
565 | //\r | |
566 | DriverBindingHandleCount = 0;\r | |
567 | Status = gBS->LocateHandleBuffer (\r | |
568 | ByProtocol,\r | |
569 | &gEfiDriverBindingProtocolGuid,\r | |
570 | NULL,\r | |
571 | &DriverBindingHandleCount,\r | |
572 | &DriverBindingHandleBuffer\r | |
573 | );\r | |
574 | if (EFI_ERROR (Status) || (DriverBindingHandleCount == 0)) {\r | |
575 | return NULL;\r | |
576 | }\r | |
577 | \r | |
578 | for (Index = 0; Index < DriverBindingHandleCount; Index++) {\r | |
579 | DriverBindingInterface =NULL;\r | |
580 | Status = gBS->OpenProtocol (\r | |
581 | DriverBindingHandleBuffer[Index],\r | |
582 | &gEfiDriverBindingProtocolGuid,\r | |
583 | (VOID **) &DriverBindingInterface,\r | |
584 | NULL,\r | |
585 | NULL,\r | |
586 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
587 | );\r | |
588 | if (EFI_ERROR (Status)) {\r | |
589 | continue;\r | |
590 | }\r | |
591 | \r | |
592 | if (DriverBindingInterface->ImageHandle == ImageHandle) {\r | |
593 | *BindingHandle = DriverBindingHandleBuffer[Index];\r | |
594 | FreePool (DriverBindingHandleBuffer);\r | |
595 | return DriverBindingInterface;\r | |
596 | }\r | |
597 | }\r | |
598 | \r | |
599 | FreePool (DriverBindingHandleBuffer);\r | |
600 | *BindingHandle = NULL;\r | |
601 | return NULL;\r | |
602 | }\r | |
603 | \r | |
604 | /**\r | |
605 | return the current TPL, copied from the EDKII glue lib\r | |
606 | \r | |
607 | @param VOID\r | |
608 | \r | |
609 | @return Current TPL\r | |
610 | \r | |
611 | **/\r | |
612 | EFI_TPL\r | |
613 | GetCurrentTpl (\r | |
614 | VOID\r | |
615 | )\r | |
616 | {\r | |
617 | EFI_TPL Tpl;\r | |
618 | \r | |
619 | Tpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r | |
620 | gBS->RestoreTPL (Tpl);\r | |
621 | \r | |
622 | return Tpl;\r | |
623 | }\r | |
624 | \r | |
b290614d | 625 | \r |
626 | /**\r | |
627 | Retrieves the image handle of the platform override driver for a controller in the system from the memory mapping database.\r | |
628 | \r | |
629 | @param This A pointer to the\r | |
630 | EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL instance.\r | |
631 | @param ControllerHandle The device handle of the controller to check if\r | |
632 | a driver override exists.\r | |
633 | @param DriverImageHandle On output, a pointer to the next driver handle.\r | |
634 | Passing in a pointer to NULL, will return the\r | |
635 | first driver handle for ControllerHandle.\r | |
636 | @param MappingDataBase MappingDataBase - Mapping database list entry\r | |
637 | pointer\r | |
638 | @param CallerImageHandle The caller driver's image handle, for\r | |
639 | UpdateFvFileDevicePath use.\r | |
640 | \r | |
641 | @retval EFI_INVALID_PARAMETER The handle specified by ControllerHandle is not\r | |
642 | a valid handle. Or DriverImagePath is not a\r | |
643 | device path that was returned on a previous call\r | |
644 | to GetDriverPath().\r | |
645 | @retval EFI_NOT_FOUND A driver override for ControllerHandle was not\r | |
646 | found.\r | |
647 | @retval EFI_UNSUPPORTED The operation is not supported.\r | |
648 | @retval EFI_SUCCESS The driver override for ControllerHandle was\r | |
649 | returned in DriverImagePath.\r | |
650 | \r | |
651 | **/\r | |
652 | EFI_STATUS\r | |
653 | EFIAPI\r | |
654 | GetDriverFromMapping (\r | |
655 | IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This,\r | |
656 | IN EFI_HANDLE ControllerHandle,\r | |
657 | IN OUT EFI_HANDLE * DriverImageHandle,\r | |
658 | IN LIST_ENTRY * MappingDataBase,\r | |
659 | IN EFI_HANDLE CallerImageHandle\r | |
660 | )\r | |
661 | {\r | |
662 | EFI_STATUS Status;\r | |
663 | EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath;\r | |
664 | BOOLEAN ControllerFound;\r | |
665 | BOOLEAN ImageFound;\r | |
666 | EFI_HANDLE *ImageHandleBuffer;\r | |
667 | UINTN ImageHandleCount;\r | |
668 | UINTN Index;\r | |
b290614d | 669 | EFI_DRIVER_BINDING_PROTOCOL *DriverBinding;\r |
3012ce5c | 670 | EFI_HANDLE DriverBindingHandle;\r |
b290614d | 671 | BOOLEAN FoundLastReturned;\r |
672 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
673 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
674 | LIST_ENTRY *OverrideItemListIndex;\r | |
675 | LIST_ENTRY *ImageInfoListIndex;\r | |
676 | EFI_DEVICE_PATH_PROTOCOL *TempDriverImagePath;\r | |
677 | EFI_HANDLE ImageHandle;\r | |
678 | EFI_HANDLE Handle;\r | |
23d64dda | 679 | EFI_DEVICE_PATH_PROTOCOL *LoadedImageDevicePath;\r |
b290614d | 680 | EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *BusSpecificDriverOverride;\r |
681 | UINTN DevicePathSize;\r | |
682 | \r | |
683 | //\r | |
684 | // Check that ControllerHandle is a valid handle\r | |
685 | //\r | |
686 | if (ControllerHandle == NULL) {\r | |
687 | return EFI_INVALID_PARAMETER;\r | |
688 | }\r | |
689 | \r | |
690 | Status = gBS->HandleProtocol (\r | |
691 | ControllerHandle,\r | |
692 | &gEfiDevicePathProtocolGuid,\r | |
693 | (VOID **) &ControllerDevicePath\r | |
694 | );\r | |
695 | if (EFI_ERROR (Status) || ControllerDevicePath == NULL) {\r | |
696 | return EFI_INVALID_PARAMETER;\r | |
697 | }\r | |
698 | \r | |
699 | //\r | |
700 | // Search ControllerDevicePath in MappingDataBase\r | |
701 | //\r | |
702 | OverrideItem = NULL;\r | |
703 | ControllerFound = FALSE;\r | |
704 | OverrideItemListIndex = MappingDataBase->ForwardLink;\r | |
705 | while (OverrideItemListIndex != MappingDataBase){\r | |
706 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
707 | DevicePathSize = GetDevicePathSize (ControllerDevicePath);\r | |
708 | if (DevicePathSize == GetDevicePathSize (OverrideItem->ControllerDevicePath)) {\r | |
709 | if (CompareMem (\r | |
710 | ControllerDevicePath,\r | |
711 | OverrideItem->ControllerDevicePath,\r | |
712 | GetDevicePathSize (OverrideItem->ControllerDevicePath)\r | |
713 | ) == 0\r | |
714 | ) {\r | |
715 | ControllerFound = TRUE;\r | |
716 | break;\r | |
717 | }\r | |
718 | \r | |
719 | }\r | |
720 | OverrideItemListIndex = OverrideItemListIndex->ForwardLink;\r | |
721 | }\r | |
722 | \r | |
723 | if (!ControllerFound) {\r | |
724 | return EFI_NOT_FOUND;\r | |
725 | }\r | |
726 | //\r | |
727 | // Passing in a pointer to NULL, will return the first driver device path for ControllerHandle.\r | |
728 | // Check whether the driverImagePath is not a device path that was returned on a previous call to GetDriverPath().\r | |
729 | //\r | |
730 | if (*DriverImageHandle != NULL) {\r | |
731 | if (*DriverImageHandle != OverrideItem->LastReturnedImageHandle) {\r | |
732 | return EFI_INVALID_PARAMETER;\r | |
733 | }\r | |
734 | }\r | |
735 | //\r | |
736 | // The GetDriverPath() maybe called recursively, because it use ConnectDevicePath() internally,\r | |
737 | // so should check whether there is a dead loop.\r | |
738 | // Here use a controller device path stack to record all processed controller device path during a GetDriverPath() call,\r | |
739 | // and check the controller device path whether appear again during the GetDriverPath() call.\r | |
740 | //\r | |
741 | if (CheckExistInStack(OverrideItem->ControllerDevicePath)) {\r | |
742 | //\r | |
743 | // There is a dependecy dead loop if the ControllerDevicePath appear in stack twice\r | |
744 | //\r | |
745 | return EFI_UNSUPPORTED;\r | |
746 | }\r | |
747 | PushDevPathStack (OverrideItem->ControllerDevicePath);\r | |
748 | \r | |
749 | //\r | |
750 | // Check every override driver, try to load and start them\r | |
751 | //\r | |
752 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
753 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
754 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
755 | if (DriverImageInfo->ImageHandle == NULL) {\r | |
756 | //\r | |
757 | // Skip if the image is unloadable or unstartable\r | |
758 | //\r | |
759 | if ((!DriverImageInfo->UnLoadable) && ((!DriverImageInfo->UnStartable))) {\r | |
760 | TempDriverImagePath = DriverImageInfo->DriverImagePath;\r | |
761 | //\r | |
762 | // If the image device path contain a FV node, check the Fv file device path is valid. If it is invalid, try to return the valid device path.\r | |
763 | // FV address maybe changes for memory layout adjust from time to time, use this funciton could promise the Fv file device path is right.\r | |
764 | //\r | |
765 | Status = UpdateFvFileDevicePath (&TempDriverImagePath, NULL, CallerImageHandle);\r | |
766 | if (!EFI_ERROR (Status)) {\r | |
767 | FreePool(DriverImageInfo->DriverImagePath);\r | |
768 | DriverImageInfo->DriverImagePath = TempDriverImagePath;\r | |
769 | }\r | |
770 | //\r | |
771 | // Get all Loaded Image protocol to check whether the driver image has been loaded and started\r | |
772 | //\r | |
773 | ImageFound = FALSE;\r | |
774 | ImageHandleCount = 0;\r | |
775 | Status = gBS->LocateHandleBuffer (\r | |
776 | ByProtocol,\r | |
777 | &gEfiLoadedImageProtocolGuid,\r | |
778 | NULL,\r | |
779 | &ImageHandleCount,\r | |
780 | &ImageHandleBuffer\r | |
781 | );\r | |
782 | if (EFI_ERROR (Status) || (ImageHandleCount == 0)) {\r | |
783 | return EFI_NOT_FOUND;\r | |
784 | }\r | |
785 | \r | |
786 | for(Index = 0; Index < ImageHandleCount; Index ++) {\r | |
b290614d | 787 | //\r |
23d64dda | 788 | // Get the EFI Loaded Image Device Path Protocol\r |
b290614d | 789 | //\r |
23d64dda | 790 | LoadedImageDevicePath = NULL;\r |
b290614d | 791 | Status = gBS->HandleProtocol (\r |
23d64dda | 792 | ImageHandleBuffer[Index],\r |
793 | &gEfiLoadedImageDevicePathProtocolGuid,\r | |
794 | (VOID **) &LoadedImageDevicePath\r | |
b290614d | 795 | );\r |
796 | if (EFI_ERROR (Status)) {\r | |
797 | //\r | |
23d64dda | 798 | // Maybe Not all EFI Loaded Image Device Path Protocol existed.\r |
b290614d | 799 | //\r |
800 | continue;\r | |
801 | }\r | |
802 | \r | |
b290614d | 803 | DevicePathSize = GetDevicePathSize (DriverImageInfo->DriverImagePath);\r |
23d64dda | 804 | if (DevicePathSize == GetDevicePathSize (LoadedImageDevicePath)) {\r |
b290614d | 805 | if (CompareMem (\r |
806 | DriverImageInfo->DriverImagePath,\r | |
23d64dda | 807 | LoadedImageDevicePath,\r |
808 | GetDevicePathSize (LoadedImageDevicePath)\r | |
b290614d | 809 | ) == 0\r |
810 | ) {\r | |
811 | ImageFound = TRUE;\r | |
812 | break;\r | |
813 | }\r | |
814 | }\r | |
815 | }\r | |
816 | \r | |
817 | if (ImageFound) {\r | |
3012ce5c | 818 | //\r |
819 | // Find its related driver binding protocol\r | |
820 | // Driver binding handle may be different with its driver's Image handle,\r | |
821 | //\r | |
822 | DriverBindingHandle = NULL;\r | |
823 | DriverBinding = GetBindingProtocolFromImageHandle (\r | |
824 | ImageHandleBuffer[Index],\r | |
825 | &DriverBindingHandle\r | |
826 | );\r | |
827 | ASSERT (DriverBinding != NULL);\r | |
b290614d | 828 | DriverImageInfo->ImageHandle = ImageHandleBuffer[Index];\r |
3012ce5c | 829 | } else if (GetCurrentTpl() <= TPL_CALLBACK){\r |
b290614d | 830 | //\r |
831 | // The driver image has not been loaded and started, need try to load and start it now\r | |
832 | // Try to connect all device in the driver image path\r | |
833 | //\r | |
3012ce5c | 834 | // Note: LoadImage() and StartImage() should be called under CALLBACK TPL in theory, but\r |
835 | // since many device need to be connected in CALLBACK level environment( e.g. Usb devices )\r | |
836 | // and the Fat and Patition driver can endure executing in CALLBACK level in fact, so here permit\r | |
837 | // to use LoadImage() and StartImage() in CALLBACK TPL.\r | |
838 | //\r | |
b290614d | 839 | Status = ConnectDevicePath (DriverImageInfo->DriverImagePath);\r |
840 | //\r | |
841 | // check whether it points to a PCI Option Rom image, and try to use bus override protocol to get its first option rom image driver\r | |
842 | //\r | |
843 | TempDriverImagePath = DriverImageInfo->DriverImagePath;\r | |
844 | gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &TempDriverImagePath, &Handle);\r | |
845 | //\r | |
846 | // Get the Bus Specific Driver Override Protocol instance on the Controller Handle\r | |
847 | //\r | |
848 | Status = gBS->HandleProtocol(\r | |
849 | Handle,\r | |
850 | &gEfiBusSpecificDriverOverrideProtocolGuid,\r | |
851 | (VOID **) &BusSpecificDriverOverride\r | |
852 | );\r | |
853 | if (!EFI_ERROR (Status) && (BusSpecificDriverOverride != NULL)) {\r | |
854 | ImageHandle = NULL;\r | |
855 | Status = BusSpecificDriverOverride->GetDriver (\r | |
856 | BusSpecificDriverOverride,\r | |
857 | &ImageHandle\r | |
858 | );\r | |
859 | if (!EFI_ERROR (Status)) {\r | |
3012ce5c | 860 | //\r |
861 | // Find its related driver binding protocol\r | |
862 | // Driver binding handle may be different with its driver's Image handle\r | |
863 | //\r | |
864 | DriverBindingHandle = NULL;\r | |
865 | DriverBinding = GetBindingProtocolFromImageHandle (\r | |
866 | ImageHandle,\r | |
867 | &DriverBindingHandle\r | |
868 | );\r | |
869 | ASSERT (DriverBinding != NULL);\r | |
b290614d | 870 | DriverImageInfo->ImageHandle = ImageHandle;\r |
871 | }\r | |
872 | }\r | |
873 | //\r | |
874 | // Skip if any device cannot be connected now, future passes through GetDriver() may be able to load that driver.\r | |
875 | // Only file path media or FwVol Device Path Node remain if all device is connected\r | |
876 | //\r | |
877 | TempDriverImagePath = DriverImageInfo->DriverImagePath;\r | |
878 | gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &TempDriverImagePath, &Handle);\r | |
879 | if (((DevicePathType (TempDriverImagePath) == MEDIA_DEVICE_PATH) &&\r | |
880 | (DevicePathSubType (TempDriverImagePath) == MEDIA_FILEPATH_DP)) ||\r | |
881 | (EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) TempDriverImagePath) != NULL)\r | |
882 | ) {\r | |
883 | //\r | |
884 | // Try to load the driver\r | |
885 | //\r | |
886 | TempDriverImagePath = DriverImageInfo->DriverImagePath;\r | |
887 | Status = gBS->LoadImage (\r | |
888 | FALSE,\r | |
889 | CallerImageHandle,\r | |
890 | TempDriverImagePath,\r | |
891 | NULL,\r | |
892 | 0,\r | |
893 | &ImageHandle\r | |
894 | );\r | |
895 | if (!EFI_ERROR (Status)) {\r | |
896 | //\r | |
897 | // Try to start the driver\r | |
898 | //\r | |
899 | Status = gBS->StartImage (ImageHandle, NULL, NULL);\r | |
900 | if (EFI_ERROR (Status)){\r | |
901 | DriverImageInfo->UnStartable = TRUE;\r | |
902 | DriverImageInfo->ImageHandle = NULL;\r | |
903 | } else {\r | |
3012ce5c | 904 | //\r |
905 | // Find its related driver binding protocol\r | |
906 | // Driver binding handle may be different with its driver's Image handle\r | |
907 | //\r | |
908 | DriverBindingHandle = NULL;\r | |
909 | DriverBinding = GetBindingProtocolFromImageHandle (\r | |
910 | ImageHandle,\r | |
911 | &DriverBindingHandle\r | |
912 | );\r | |
913 | ASSERT (DriverBinding != NULL);\r | |
b290614d | 914 | DriverImageInfo->ImageHandle = ImageHandle;\r |
915 | }\r | |
916 | } else {\r | |
917 | DriverImageInfo->UnLoadable = TRUE;\r | |
918 | DriverImageInfo->ImageHandle = NULL;\r | |
919 | }\r | |
920 | }\r | |
921 | }\r | |
922 | FreePool (ImageHandleBuffer);\r | |
923 | }\r | |
924 | }\r | |
925 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
926 | }\r | |
927 | //\r | |
928 | // Finish try to load and start the override driver of a controller, popup the controller's device path\r | |
929 | //\r | |
930 | PopDevPathStack (NULL);\r | |
931 | \r | |
932 | //\r | |
933 | // return the DriverImageHandle for ControllerHandle\r | |
934 | //\r | |
935 | FoundLastReturned = FALSE;\r | |
936 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
937 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
938 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
939 | if (DriverImageInfo->ImageHandle != NULL) {\r | |
940 | if ((*DriverImageHandle == NULL) || FoundLastReturned) {\r | |
941 | OverrideItem->LastReturnedImageHandle = DriverImageInfo->ImageHandle;\r | |
942 | *DriverImageHandle = DriverImageInfo->ImageHandle;\r | |
943 | return EFI_SUCCESS;\r | |
944 | } else if (*DriverImageHandle == DriverImageInfo->ImageHandle){\r | |
945 | FoundLastReturned = TRUE;\r | |
946 | }\r | |
947 | }\r | |
948 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
949 | }\r | |
950 | \r | |
951 | return EFI_NOT_FOUND;\r | |
952 | }\r | |
953 | \r | |
954 | \r | |
955 | /**\r | |
956 | Check mapping database whether already has the mapping info which\r | |
957 | records the input Controller to input DriverImage.\r | |
958 | If has, the controller's total override driver number and input DriverImage's order number is return.\r | |
959 | \r | |
960 | @param ControllerDevicePath The controller device path need to add a\r | |
961 | override driver image item\r | |
962 | @param DriverImageDevicePath The driver image device path need to be insert\r | |
963 | @param MappingDataBase Mapping database list entry pointer\r | |
964 | @param DriverInfoNum the controller's total override driver number\r | |
965 | @param DriverImageNO The inserted order number\r | |
966 | \r | |
967 | @return EFI_INVALID_PARAMETER\r | |
968 | @return EFI_NOT_FOUND\r | |
969 | @return EFI_SUCCESS\r | |
970 | \r | |
971 | **/\r | |
972 | EFI_STATUS\r | |
973 | EFIAPI\r | |
974 | CheckMapping (\r | |
975 | IN EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath,\r | |
976 | IN EFI_DEVICE_PATH_PROTOCOL *DriverImageDevicePath,\r | |
977 | IN LIST_ENTRY * MappingDataBase,\r | |
978 | OUT UINT32 *DriverInfoNum,\r | |
979 | OUT UINT32 *DriverImageNO\r | |
980 | )\r | |
981 | {\r | |
982 | LIST_ENTRY *OverrideItemListIndex;\r | |
983 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
984 | LIST_ENTRY *ImageInfoListIndex;\r | |
985 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
986 | BOOLEAN Found;\r | |
987 | UINT32 ImageNO;\r | |
988 | UINTN DevicePathSize;\r | |
989 | \r | |
990 | //\r | |
991 | // Check that ControllerHandle is a valid handle\r | |
992 | //\r | |
993 | if (ControllerDevicePath == NULL) {\r | |
994 | return EFI_INVALID_PARAMETER;\r | |
995 | }\r | |
996 | if (MappingDataBase == NULL) {\r | |
997 | return EFI_INVALID_PARAMETER;\r | |
998 | }\r | |
999 | //\r | |
1000 | // Search ControllerDevicePath in MappingDataBase\r | |
1001 | //\r | |
1002 | Found = FALSE;\r | |
1003 | OverrideItem = NULL;\r | |
1004 | OverrideItemListIndex = MappingDataBase->ForwardLink;\r | |
1005 | while (OverrideItemListIndex != MappingDataBase){\r | |
1006 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
1007 | DevicePathSize = GetDevicePathSize (ControllerDevicePath);\r | |
1008 | if (DevicePathSize == GetDevicePathSize (OverrideItem->ControllerDevicePath)) {\r | |
1009 | if (CompareMem (\r | |
1010 | ControllerDevicePath,\r | |
1011 | OverrideItem->ControllerDevicePath,\r | |
1012 | GetDevicePathSize (OverrideItem->ControllerDevicePath)\r | |
1013 | ) == 0\r | |
1014 | ) {\r | |
1015 | Found = TRUE;\r | |
1016 | break;\r | |
1017 | }\r | |
1018 | }\r | |
1019 | OverrideItemListIndex = OverrideItemListIndex->ForwardLink;\r | |
1020 | }\r | |
1021 | \r | |
1022 | if (!Found) {\r | |
1023 | return EFI_NOT_FOUND;\r | |
1024 | }\r | |
1025 | \r | |
1026 | ASSERT (OverrideItem->DriverInfoNum != 0);\r | |
1027 | if (DriverInfoNum != NULL) {\r | |
1028 | *DriverInfoNum = OverrideItem->DriverInfoNum;\r | |
1029 | }\r | |
1030 | \r | |
1031 | \r | |
1032 | if (DriverImageDevicePath == NULL) {\r | |
1033 | return EFI_SUCCESS;\r | |
1034 | }\r | |
1035 | //\r | |
1036 | // return the DriverImageHandle for ControllerHandle\r | |
1037 | //\r | |
1038 | ImageNO = 0;\r | |
1039 | Found = FALSE;\r | |
1040 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
1041 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
1042 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
1043 | ImageNO++;\r | |
1044 | DevicePathSize = GetDevicePathSize (DriverImageDevicePath);\r | |
1045 | if (DevicePathSize == GetDevicePathSize (DriverImageInfo->DriverImagePath)) {\r | |
1046 | if (CompareMem (\r | |
1047 | DriverImageDevicePath,\r | |
1048 | DriverImageInfo->DriverImagePath,\r | |
1049 | GetDevicePathSize (DriverImageInfo->DriverImagePath)\r | |
1050 | ) == 0\r | |
1051 | ) {\r | |
1052 | Found = TRUE;\r | |
1053 | break;\r | |
1054 | }\r | |
1055 | }\r | |
1056 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
1057 | }\r | |
1058 | \r | |
1059 | if (!Found) {\r | |
1060 | return EFI_NOT_FOUND;\r | |
1061 | } else {\r | |
1062 | if (DriverImageNO != NULL) {\r | |
1063 | *DriverImageNO = ImageNO;\r | |
1064 | }\r | |
1065 | return EFI_SUCCESS;\r | |
1066 | }\r | |
1067 | \r | |
1068 | }\r | |
1069 | \r | |
1070 | \r | |
1071 | /**\r | |
1072 | Insert a driver image as a controller's override driver into the mapping database.\r | |
1073 | The driver image's order number is indicated by DriverImageNO.\r | |
1074 | \r | |
1075 | @param ControllerDevicePath The controller device path need to add a\r | |
1076 | override driver image item\r | |
1077 | @param DriverImageDevicePath The driver image device path need to be insert\r | |
1078 | @param MappingDataBase Mapping database list entry pointer\r | |
1079 | @param DriverImageNO The inserted order number\r | |
1080 | \r | |
1081 | @return EFI_INVALID_PARAMETER\r | |
1082 | @return EFI_ALREADY_STARTED\r | |
1083 | @return EFI_SUCCESS\r | |
1084 | \r | |
1085 | **/\r | |
1086 | EFI_STATUS\r | |
1087 | EFIAPI\r | |
1088 | InsertDriverImage (\r | |
1089 | IN EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath,\r | |
1090 | IN EFI_DEVICE_PATH_PROTOCOL *DriverImageDevicePath,\r | |
1091 | IN LIST_ENTRY *MappingDataBase,\r | |
1092 | IN UINT32 DriverImageNO\r | |
1093 | )\r | |
1094 | {\r | |
1095 | EFI_STATUS Status;\r | |
1096 | LIST_ENTRY *OverrideItemListIndex;\r | |
1097 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
1098 | LIST_ENTRY *ImageInfoListIndex;\r | |
1099 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
1100 | BOOLEAN Found;\r | |
1101 | UINT32 ImageNO;\r | |
1102 | UINTN DevicePathSize;\r | |
1103 | \r | |
1104 | //\r | |
1105 | // Check that ControllerHandle is a valid handle\r | |
1106 | //\r | |
1107 | if (ControllerDevicePath == NULL) {\r | |
1108 | return EFI_INVALID_PARAMETER;\r | |
1109 | }\r | |
1110 | if (DriverImageDevicePath == NULL) {\r | |
1111 | return EFI_INVALID_PARAMETER;\r | |
1112 | }\r | |
1113 | if (MappingDataBase == NULL) {\r | |
1114 | return EFI_INVALID_PARAMETER;\r | |
1115 | }\r | |
1116 | \r | |
1117 | Status = CheckMapping (\r | |
1118 | ControllerDevicePath,\r | |
1119 | DriverImageDevicePath,\r | |
1120 | MappingDataBase,\r | |
1121 | NULL,\r | |
1122 | NULL\r | |
1123 | );\r | |
1124 | if (Status == EFI_SUCCESS) {\r | |
1125 | return EFI_ALREADY_STARTED;\r | |
1126 | }\r | |
1127 | \r | |
1128 | //\r | |
1129 | // Search the input ControllerDevicePath in MappingDataBase\r | |
1130 | //\r | |
1131 | Found = FALSE;\r | |
1132 | OverrideItem = NULL;\r | |
1133 | OverrideItemListIndex = MappingDataBase->ForwardLink;\r | |
1134 | while (OverrideItemListIndex != MappingDataBase){\r | |
1135 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
1136 | DevicePathSize = GetDevicePathSize (ControllerDevicePath);\r | |
1137 | if (DevicePathSize == GetDevicePathSize (OverrideItem->ControllerDevicePath)) {\r | |
1138 | if (CompareMem (\r | |
1139 | ControllerDevicePath,\r | |
1140 | OverrideItem->ControllerDevicePath,\r | |
1141 | GetDevicePathSize (OverrideItem->ControllerDevicePath)\r | |
1142 | ) == 0\r | |
1143 | ) {\r | |
1144 | Found = TRUE;\r | |
1145 | break;\r | |
1146 | }\r | |
1147 | }\r | |
1148 | OverrideItemListIndex = OverrideItemListIndex->ForwardLink;\r | |
1149 | }\r | |
1150 | //\r | |
1151 | // If cannot find, this is a new controller item\r | |
1152 | // Add the Controller related PLATFORM_OVERRIDE_ITEM structrue in mapping data base\r | |
1153 | //\r | |
1154 | if (!Found) {\r | |
1155 | OverrideItem = AllocateZeroPool (sizeof (PLATFORM_OVERRIDE_ITEM));\r | |
1156 | ASSERT (OverrideItem != NULL);\r | |
1157 | OverrideItem->Signature = PLATFORM_OVERRIDE_ITEM_SIGNATURE;\r | |
1158 | OverrideItem->ControllerDevicePath = DuplicateDevicePath (ControllerDevicePath);\r | |
1159 | InitializeListHead (&OverrideItem->DriverInfoList);\r | |
1160 | InsertTailList (MappingDataBase, &OverrideItem->Link);\r | |
1161 | }\r | |
1162 | \r | |
1163 | //\r | |
1164 | // Prepare the driver image related DRIVER_IMAGE_INFO structure.\r | |
1165 | //\r | |
1166 | DriverImageInfo = AllocateZeroPool (sizeof (DRIVER_IMAGE_INFO));\r | |
1167 | ASSERT (DriverImageInfo != NULL);\r | |
1168 | DriverImageInfo->Signature = DRIVER_IMAGE_INFO_SIGNATURE;\r | |
1169 | DriverImageInfo->DriverImagePath = DuplicateDevicePath (DriverImageDevicePath);\r | |
1170 | //\r | |
1171 | // Find the driver image wantted order location\r | |
1172 | //\r | |
1173 | ImageNO = 0;\r | |
1174 | Found = FALSE;\r | |
1175 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
1176 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
1177 | if (ImageNO == (DriverImageNO - 1)) {\r | |
1178 | //\r | |
1179 | // find the wantted order location, insert it\r | |
1180 | //\r | |
1181 | InsertTailList (ImageInfoListIndex, &DriverImageInfo->Link);\r | |
1182 | OverrideItem->DriverInfoNum ++;\r | |
1183 | Found = TRUE;\r | |
1184 | break;\r | |
1185 | }\r | |
1186 | //DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
1187 | ImageNO++;\r | |
1188 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
1189 | }\r | |
1190 | \r | |
1191 | if (!Found) {\r | |
1192 | //\r | |
1193 | // if not find the wantted order location, add it as last item of the controller mapping item\r | |
1194 | //\r | |
1195 | InsertTailList (&OverrideItem->DriverInfoList, &DriverImageInfo->Link);\r | |
1196 | OverrideItem->DriverInfoNum ++;\r | |
1197 | }\r | |
1198 | \r | |
1199 | return EFI_SUCCESS;\r | |
1200 | }\r | |
1201 | \r | |
1202 | \r | |
1203 | /**\r | |
1204 | Delete a controller's override driver from the mapping database.\r | |
1205 | \r | |
1206 | @param ControllerDevicePath The controller device path need to add a\r | |
1207 | override driver image item\r | |
1208 | @param DriverImageDevicePath The driver image device path need to be insert\r | |
1209 | @param MappingDataBase Mapping database list entry pointer\r | |
1210 | @param DriverImageNO The inserted order number\r | |
1211 | \r | |
1212 | @return EFI_INVALID_PARAMETER\r | |
1213 | @return EFI_NOT_FOUND\r | |
1214 | @return EFI_SUCCESS\r | |
1215 | \r | |
1216 | **/\r | |
1217 | EFI_STATUS\r | |
1218 | EFIAPI\r | |
1219 | DeleteDriverImage (\r | |
1220 | IN EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath,\r | |
1221 | IN EFI_DEVICE_PATH_PROTOCOL *DriverImageDevicePath,\r | |
1222 | IN LIST_ENTRY *MappingDataBase\r | |
1223 | )\r | |
1224 | {\r | |
1225 | EFI_STATUS Status;\r | |
1226 | LIST_ENTRY *OverrideItemListIndex;\r | |
1227 | PLATFORM_OVERRIDE_ITEM *OverrideItem;\r | |
1228 | LIST_ENTRY *ImageInfoListIndex;\r | |
1229 | DRIVER_IMAGE_INFO *DriverImageInfo;\r | |
1230 | BOOLEAN Found;\r | |
1231 | UINTN DevicePathSize;\r | |
1232 | \r | |
1233 | //\r | |
1234 | // Check that ControllerHandle is a valid handle\r | |
1235 | //\r | |
1236 | if (ControllerDevicePath == NULL) {\r | |
1237 | return EFI_INVALID_PARAMETER;\r | |
1238 | }\r | |
1239 | \r | |
1240 | if (MappingDataBase == NULL) {\r | |
1241 | return EFI_INVALID_PARAMETER;\r | |
1242 | }\r | |
1243 | \r | |
1244 | Status = CheckMapping (\r | |
1245 | ControllerDevicePath,\r | |
1246 | DriverImageDevicePath,\r | |
1247 | MappingDataBase,\r | |
1248 | NULL,\r | |
1249 | NULL\r | |
1250 | );\r | |
1251 | if (Status == EFI_NOT_FOUND) {\r | |
1252 | return EFI_NOT_FOUND;\r | |
1253 | }\r | |
1254 | \r | |
1255 | //\r | |
1256 | // Search ControllerDevicePath in MappingDataBase\r | |
1257 | //\r | |
1258 | Found = FALSE;\r | |
1259 | OverrideItem = NULL;\r | |
1260 | OverrideItemListIndex = MappingDataBase->ForwardLink;\r | |
1261 | while (OverrideItemListIndex != MappingDataBase){\r | |
1262 | OverrideItem = CR(OverrideItemListIndex, PLATFORM_OVERRIDE_ITEM, Link, PLATFORM_OVERRIDE_ITEM_SIGNATURE);\r | |
1263 | DevicePathSize = GetDevicePathSize (ControllerDevicePath);\r | |
1264 | if (DevicePathSize == GetDevicePathSize (OverrideItem->ControllerDevicePath)) {\r | |
1265 | if (CompareMem (\r | |
1266 | ControllerDevicePath,\r | |
1267 | OverrideItem->ControllerDevicePath,\r | |
1268 | GetDevicePathSize (OverrideItem->ControllerDevicePath)\r | |
1269 | ) == 0\r | |
1270 | ) {\r | |
1271 | Found = TRUE;\r | |
1272 | break;\r | |
1273 | }\r | |
1274 | }\r | |
1275 | OverrideItemListIndex = OverrideItemListIndex->ForwardLink;\r | |
1276 | }\r | |
1277 | \r | |
1278 | ASSERT (Found);\r | |
1279 | ASSERT (OverrideItem->DriverInfoNum != 0);\r | |
1280 | //\r | |
1281 | //\r | |
1282 | //\r | |
1283 | Found = FALSE;\r | |
1284 | ImageInfoListIndex = OverrideItem->DriverInfoList.ForwardLink;\r | |
1285 | while (ImageInfoListIndex != &OverrideItem->DriverInfoList){\r | |
1286 | DriverImageInfo = CR(ImageInfoListIndex, DRIVER_IMAGE_INFO, Link, DRIVER_IMAGE_INFO_SIGNATURE);\r | |
1287 | ImageInfoListIndex = ImageInfoListIndex->ForwardLink;\r | |
1288 | if (DriverImageDevicePath != NULL) {\r | |
1289 | DevicePathSize = GetDevicePathSize (DriverImageDevicePath);\r | |
1290 | if (DevicePathSize == GetDevicePathSize (DriverImageInfo->DriverImagePath)) {\r | |
1291 | if (CompareMem (\r | |
1292 | DriverImageDevicePath,\r | |
1293 | DriverImageInfo->DriverImagePath,\r | |
1294 | GetDevicePathSize (DriverImageInfo->DriverImagePath)\r | |
1295 | ) == 0\r | |
1296 | ) {\r | |
1297 | Found = TRUE;\r | |
1298 | FreePool(DriverImageInfo->DriverImagePath);\r | |
1299 | RemoveEntryList (&DriverImageInfo->Link);\r | |
1300 | OverrideItem->DriverInfoNum --;\r | |
1301 | break;\r | |
1302 | }\r | |
1303 | }\r | |
1304 | } else {\r | |
1305 | Found = TRUE;\r | |
1306 | FreePool(DriverImageInfo->DriverImagePath);\r | |
1307 | RemoveEntryList (&DriverImageInfo->Link);\r | |
1308 | OverrideItem->DriverInfoNum --;\r | |
1309 | }\r | |
1310 | }\r | |
1311 | \r | |
1312 | if (DriverImageDevicePath == NULL) {\r | |
1313 | ASSERT (OverrideItem->DriverInfoNum == 0);\r | |
1314 | }\r | |
1315 | \r | |
1316 | if (OverrideItem->DriverInfoNum == 0) {\r | |
1317 | FreePool(OverrideItem->ControllerDevicePath);\r | |
1318 | RemoveEntryList (&OverrideItem->Link);\r | |
1319 | FreePool (OverrideItem);\r | |
1320 | }\r | |
1321 | \r | |
1322 | if (!Found) {\r | |
1323 | return EFI_NOT_FOUND;\r | |
1324 | }\r | |
1325 | \r | |
1326 | return EFI_SUCCESS;\r | |
1327 | }\r | |
1328 | \r | |
1329 | \r | |
1330 | /**\r | |
1331 | Deletes all environment variable(s) that contain the override mappings from Controller Device Path to\r | |
1332 | a set of Driver Device Paths.\r | |
1333 | \r | |
1334 | None\r | |
1335 | \r | |
1336 | @return EFI_SUCCESS\r | |
1337 | \r | |
1338 | **/\r | |
1339 | EFI_STATUS\r | |
1340 | EFIAPI\r | |
1341 | DeleteOverridesVariables (\r | |
1342 | VOID\r | |
1343 | )\r | |
1344 | {\r | |
1345 | EFI_STATUS Status;\r | |
1346 | VOID *VariableBuffer;\r | |
1347 | UINTN VariableNum;\r | |
1348 | UINTN BufferSize;\r | |
1349 | UINTN Index;\r | |
1350 | CHAR16 OverrideVariableName[40];\r | |
1351 | \r | |
1352 | //\r | |
1353 | // Get environment variable(s) number\r | |
1354 | //\r | |
1355 | VariableNum =0;\r | |
1356 | VariableBuffer = GetVariableAndSize (L"PlatDriOver", &gEfiOverrideVariableGuid, &BufferSize);\r | |
1357 | VariableNum ++;\r | |
1358 | if (VariableBuffer == NULL) {\r | |
1359 | return EFI_NOT_FOUND;\r | |
1360 | }\r | |
1361 | //\r | |
1362 | // Check NotEnd to get all PlatDriOverX variable(s)\r | |
1363 | //\r | |
1364 | while (*(UINT32*)VariableBuffer) {\r | |
1365 | UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", VariableNum);\r | |
1366 | VariableBuffer = GetVariableAndSize (OverrideVariableName, &gEfiOverrideVariableGuid, &BufferSize);\r | |
1367 | VariableNum ++;\r | |
1368 | ASSERT (VariableBuffer != NULL);\r | |
1369 | }\r | |
1370 | \r | |
1371 | Status = gRT->SetVariable (\r | |
1372 | L"PlatDriOver",\r | |
1373 | &gEfiOverrideVariableGuid,\r | |
1374 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
1375 | 0,\r | |
1376 | NULL\r | |
1377 | );\r | |
1378 | ASSERT (!EFI_ERROR (Status));\r | |
1379 | for (Index = 1; Index < VariableNum; Index++) {\r | |
1380 | UnicodeSPrint (OverrideVariableName, sizeof (OverrideVariableName), L"PlatDriOver%d", Index);\r | |
1381 | Status = gRT->SetVariable (\r | |
1382 | OverrideVariableName,\r | |
1383 | &gEfiOverrideVariableGuid,\r | |
1384 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
1385 | 0,\r | |
1386 | NULL\r | |
1387 | );\r | |
1388 | ASSERT (!EFI_ERROR (Status));\r | |
1389 | }\r | |
1390 | return EFI_SUCCESS;\r | |
1391 | }\r | |
1392 | \r | |
1393 | \r | |
1394 | /**\r | |
1395 | Push a controller device path into a globle device path list\r | |
1396 | \r | |
1397 | @param ControllerDevicePath The controller device path need to push into\r | |
1398 | stack\r | |
1399 | \r | |
1400 | @return EFI_SUCCESS\r | |
1401 | \r | |
1402 | **/\r | |
1403 | EFI_STATUS\r | |
1404 | EFIAPI\r | |
1405 | PushDevPathStack (\r | |
1406 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
1407 | )\r | |
1408 | {\r | |
1409 | DEVICE_PATH_STACK_ITEM *DevicePathStackItem;\r | |
1410 | \r | |
1411 | DevicePathStackItem = AllocateZeroPool (sizeof (DEVICE_PATH_STACK_ITEM));\r | |
1412 | ASSERT (DevicePathStackItem != NULL);\r | |
1413 | DevicePathStackItem->Signature = DEVICE_PATH_STACK_ITEM_SIGNATURE;\r | |
1414 | DevicePathStackItem->DevicePath = DuplicateDevicePath (DevicePath);\r | |
1415 | InsertTailList (&mDevicePathStack, &DevicePathStackItem->Link);\r | |
1416 | return EFI_SUCCESS;\r | |
1417 | }\r | |
1418 | \r | |
1419 | \r | |
1420 | /**\r | |
1421 | Pop a controller device path from a globle device path list\r | |
1422 | \r | |
1423 | @param ControllerDevicePath The controller device path retrieved from stack\r | |
1424 | \r | |
1425 | @return EFI_SUCCESS\r | |
1426 | @return EFI_NOT_FOUND\r | |
1427 | \r | |
1428 | **/\r | |
1429 | EFI_STATUS\r | |
1430 | EFIAPI\r | |
1431 | PopDevPathStack (\r | |
1432 | OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r | |
1433 | )\r | |
1434 | {\r | |
1435 | DEVICE_PATH_STACK_ITEM *DevicePathStackItem;\r | |
1436 | LIST_ENTRY *ItemListIndex;\r | |
1437 | \r | |
1438 | ItemListIndex = mDevicePathStack.BackLink;\r | |
1439 | if (ItemListIndex != &mDevicePathStack){\r | |
1440 | DevicePathStackItem = CR(ItemListIndex, DEVICE_PATH_STACK_ITEM, Link, DEVICE_PATH_STACK_ITEM_SIGNATURE);\r | |
1441 | if (DevicePath != NULL) {\r | |
1442 | *DevicePath = DuplicateDevicePath (DevicePathStackItem->DevicePath);\r | |
1443 | }\r | |
1444 | FreePool (DevicePathStackItem->DevicePath);\r | |
1445 | RemoveEntryList (&DevicePathStackItem->Link);\r | |
1446 | FreePool (DevicePathStackItem);\r | |
1447 | return EFI_SUCCESS;\r | |
1448 | }\r | |
1449 | return EFI_NOT_FOUND;\r | |
1450 | }\r | |
1451 | \r | |
1452 | \r | |
1453 | /**\r | |
1454 | Check whether a controller device path is in a globle device path list\r | |
1455 | \r | |
1456 | @param ControllerDevicePath The controller device path need to check\r | |
1457 | \r | |
1458 | @return True\r | |
1459 | @return False\r | |
1460 | \r | |
1461 | **/\r | |
1462 | BOOLEAN\r | |
1463 | EFIAPI\r | |
1464 | CheckExistInStack (\r | |
1465 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
1466 | )\r | |
1467 | {\r | |
1468 | DEVICE_PATH_STACK_ITEM *DevicePathStackItem;\r | |
1469 | LIST_ENTRY *ItemListIndex;\r | |
1470 | BOOLEAN Found;\r | |
1471 | UINTN DevicePathSize;\r | |
1472 | \r | |
1473 | Found = FALSE;\r | |
1474 | ItemListIndex = mDevicePathStack.BackLink;\r | |
1475 | while (ItemListIndex != &mDevicePathStack){\r | |
1476 | DevicePathStackItem = CR(ItemListIndex, DEVICE_PATH_STACK_ITEM, Link, DEVICE_PATH_STACK_ITEM_SIGNATURE);\r | |
1477 | DevicePathSize = GetDevicePathSize (DevicePath);\r | |
1478 | if (DevicePathSize == GetDevicePathSize (DevicePathStackItem->DevicePath)) {\r | |
1479 | if (CompareMem (\r | |
1480 | DevicePath,\r | |
1481 | DevicePathStackItem->DevicePath,\r | |
1482 | GetDevicePathSize (DevicePathStackItem->DevicePath)\r | |
1483 | ) == 0\r | |
1484 | ) {\r | |
1485 | Found = TRUE;\r | |
1486 | break;\r | |
1487 | }\r | |
1488 | }\r | |
1489 | ItemListIndex = ItemListIndex->BackLink;\r | |
1490 | }\r | |
1491 | \r | |
1492 | return Found;\r | |
1493 | }\r | |
1494 | \r | |
1495 | \r | |
1496 | /**\r | |
1497 | According to a file guild, check a Fv file device path is valid. If it is invalid,\r | |
1498 | try to return the valid device path.\r | |
1499 | FV address maybe changes for memory layout adjust from time to time, use this funciton\r | |
1500 | could promise the Fv file device path is right.\r | |
1501 | \r | |
1502 | @param DevicePath on input, the Fv file device path need to check\r | |
1503 | on output, the updated valid Fv file device path\r | |
1504 | @param FileGuid the Fv file guild\r | |
1505 | @param CallerImageHandle\r | |
1506 | \r | |
1507 | @retval EFI_INVALID_PARAMETER the input DevicePath or FileGuid is invalid\r | |
1508 | parameter\r | |
1509 | @retval EFI_UNSUPPORTED the input DevicePath does not contain Fv file\r | |
1510 | guild at all\r | |
1511 | @retval EFI_ALREADY_STARTED the input DevicePath has pointed to Fv file, it\r | |
1512 | is valid\r | |
1513 | @retval EFI_SUCCESS has successfully updated the invalid DevicePath,\r | |
1514 | and return the updated device path in DevicePath\r | |
1515 | \r | |
1516 | **/\r | |
1517 | EFI_STATUS\r | |
1518 | EFIAPI\r | |
1519 | UpdateFvFileDevicePath (\r | |
1520 | IN OUT EFI_DEVICE_PATH_PROTOCOL ** DevicePath,\r | |
1521 | IN EFI_GUID *FileGuid,\r | |
1522 | IN EFI_HANDLE CallerImageHandle\r | |
1523 | )\r | |
1524 | {\r | |
1525 | EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r | |
1526 | EFI_DEVICE_PATH_PROTOCOL *LastDeviceNode;\r | |
1527 | EFI_STATUS Status;\r | |
1528 | EFI_GUID *GuidPoint;\r | |
1529 | UINTN Index;\r | |
1530 | UINTN FvHandleCount;\r | |
1531 | EFI_HANDLE *FvHandleBuffer;\r | |
1532 | EFI_FV_FILETYPE Type;\r | |
1533 | UINTN Size;\r | |
1534 | EFI_FV_FILE_ATTRIBUTES Attributes;\r | |
1535 | UINT32 AuthenticationStatus;\r | |
1536 | BOOLEAN FindFvFile;\r | |
1537 | EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;\r | |
1538 | EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r | |
1539 | MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FvFileNode;\r | |
1540 | EFI_HANDLE FoundFvHandle;\r | |
1541 | EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r | |
1542 | BOOLEAN HasFVNode;\r | |
1543 | \r | |
1544 | if ((DevicePath == NULL) || (*DevicePath == NULL)) {\r | |
1545 | return EFI_INVALID_PARAMETER;\r | |
1546 | }\r | |
1547 | \r | |
1548 | //\r | |
1549 | // Check whether the device path point to the default the input Fv file\r | |
1550 | //\r | |
1551 | TempDevicePath = *DevicePath;\r | |
1552 | LastDeviceNode = TempDevicePath;\r | |
1553 | while (!EfiIsDevicePathEnd (TempDevicePath)) {\r | |
1554 | LastDeviceNode = TempDevicePath;\r | |
1555 | TempDevicePath = EfiNextDevicePathNode (TempDevicePath);\r | |
1556 | }\r | |
1557 | GuidPoint = EfiGetNameGuidFromFwVolDevicePathNode (\r | |
1558 | (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) LastDeviceNode\r | |
1559 | );\r | |
1560 | if (GuidPoint == NULL) {\r | |
1561 | //\r | |
1562 | // if this option does not points to a Fv file, just return EFI_UNSUPPORTED\r | |
1563 | //\r | |
1564 | return EFI_UNSUPPORTED;\r | |
1565 | }\r | |
1566 | \r | |
1567 | if (FileGuid != NULL) {\r | |
1568 | if (!CompareGuid (GuidPoint, FileGuid)) {\r | |
1569 | //\r | |
1570 | // If the Fv file is not the input file guid, just return EFI_UNSUPPORTED\r | |
1571 | //\r | |
1572 | return EFI_UNSUPPORTED;\r | |
1573 | }\r | |
1574 | } else {\r | |
1575 | FileGuid = GuidPoint;\r | |
1576 | }\r | |
1577 | \r | |
1578 | //\r | |
1579 | // Check to see if the device path contain memory map node\r | |
1580 | //\r | |
1581 | TempDevicePath = *DevicePath;\r | |
1582 | HasFVNode = FALSE;\r | |
1583 | while (!EfiIsDevicePathEnd (TempDevicePath)) {\r | |
1584 | //\r | |
1585 | // Use old Device Path\r | |
1586 | //\r | |
1587 | if (DevicePathType (TempDevicePath) == HARDWARE_DEVICE_PATH &&\r | |
1588 | DevicePathSubType (TempDevicePath) == HW_MEMMAP_DP) {\r | |
1589 | HasFVNode = TRUE;\r | |
1590 | break;\r | |
1591 | }\r | |
1592 | TempDevicePath = EfiNextDevicePathNode (TempDevicePath);\r | |
1593 | }\r | |
1594 | \r | |
1595 | if (!HasFVNode) {\r | |
1596 | return EFI_UNSUPPORTED;\r | |
1597 | }\r | |
1598 | \r | |
1599 | //\r | |
1600 | // Check whether the input Fv file device path is valid\r | |
1601 | //\r | |
1602 | TempDevicePath = *DevicePath;\r | |
1603 | FoundFvHandle = NULL;\r | |
1604 | Status = gBS->LocateDevicePath (\r | |
1605 | &gEfiFirmwareVolume2ProtocolGuid,\r | |
1606 | &TempDevicePath,\r | |
1607 | &FoundFvHandle\r | |
1608 | );\r | |
1609 | if (!EFI_ERROR (Status)) {\r | |
1610 | Status = gBS->HandleProtocol (\r | |
1611 | FoundFvHandle,\r | |
1612 | &gEfiFirmwareVolume2ProtocolGuid,\r | |
1613 | (VOID **) &Fv\r | |
1614 | );\r | |
1615 | if (!EFI_ERROR (Status)) {\r | |
1616 | //\r | |
1617 | // Set FV ReadFile Buffer as NULL, only need to check whether input Fv file exist there\r | |
1618 | //\r | |
1619 | Status = Fv->ReadFile (\r | |
1620 | Fv,\r | |
1621 | FileGuid,\r | |
1622 | NULL,\r | |
1623 | &Size,\r | |
1624 | &Type,\r | |
1625 | &Attributes,\r | |
1626 | &AuthenticationStatus\r | |
1627 | );\r | |
1628 | if (!EFI_ERROR (Status)) {\r | |
1629 | return EFI_ALREADY_STARTED;\r | |
1630 | }\r | |
1631 | }\r | |
1632 | }\r | |
1633 | \r | |
1634 | //\r | |
1635 | // Look for the input wanted FV file in current FV\r | |
1636 | // First, try to look for in Caller own FV. Caller and input wanted FV file usually are in the same FV\r | |
1637 | //\r | |
1638 | FindFvFile = FALSE;\r | |
1639 | FoundFvHandle = NULL;\r | |
1640 | Status = gBS->HandleProtocol (\r | |
1641 | CallerImageHandle,\r | |
1642 | &gEfiLoadedImageProtocolGuid,\r | |
1643 | (VOID **) &LoadedImage\r | |
1644 | );\r | |
1645 | if (!EFI_ERROR (Status)) {\r | |
1646 | Status = gBS->HandleProtocol (\r | |
1647 | LoadedImage->DeviceHandle,\r | |
1648 | &gEfiFirmwareVolume2ProtocolGuid,\r | |
1649 | (VOID **) &Fv\r | |
1650 | );\r | |
1651 | if (!EFI_ERROR (Status)) {\r | |
1652 | Status = Fv->ReadFile (\r | |
1653 | Fv,\r | |
1654 | FileGuid,\r | |
1655 | NULL,\r | |
1656 | &Size,\r | |
1657 | &Type,\r | |
1658 | &Attributes,\r | |
1659 | &AuthenticationStatus\r | |
1660 | );\r | |
1661 | if (!EFI_ERROR (Status)) {\r | |
1662 | FindFvFile = TRUE;\r | |
1663 | FoundFvHandle = LoadedImage->DeviceHandle;\r | |
1664 | }\r | |
1665 | }\r | |
1666 | }\r | |
1667 | //\r | |
1668 | // Second, if fail to find, try to enumerate all FV\r | |
1669 | //\r | |
1670 | if (!FindFvFile) {\r | |
1671 | gBS->LocateHandleBuffer (\r | |
1672 | ByProtocol,\r | |
1673 | &gEfiFirmwareVolume2ProtocolGuid,\r | |
1674 | NULL,\r | |
1675 | &FvHandleCount,\r | |
1676 | &FvHandleBuffer\r | |
1677 | );\r | |
1678 | for (Index = 0; Index < FvHandleCount; Index++) {\r | |
1679 | gBS->HandleProtocol (\r | |
1680 | FvHandleBuffer[Index],\r | |
1681 | &gEfiFirmwareVolume2ProtocolGuid,\r | |
1682 | (VOID **) &Fv\r | |
1683 | );\r | |
1684 | \r | |
1685 | Status = Fv->ReadFile (\r | |
1686 | Fv,\r | |
1687 | FileGuid,\r | |
1688 | NULL,\r | |
1689 | &Size,\r | |
1690 | &Type,\r | |
1691 | &Attributes,\r | |
1692 | &AuthenticationStatus\r | |
1693 | );\r | |
1694 | if (EFI_ERROR (Status)) {\r | |
1695 | //\r | |
1696 | // Skip if input Fv file not in the FV\r | |
1697 | //\r | |
1698 | continue;\r | |
1699 | }\r | |
1700 | FindFvFile = TRUE;\r | |
1701 | FoundFvHandle = FvHandleBuffer[Index];\r | |
1702 | break;\r | |
1703 | }\r | |
1704 | }\r | |
1705 | \r | |
1706 | if (FindFvFile) {\r | |
1707 | //\r | |
1708 | // Build the shell device path\r | |
1709 | //\r | |
1710 | NewDevicePath = DevicePathFromHandle (FoundFvHandle);\r | |
1711 | EfiInitializeFwVolDevicepathNode (&FvFileNode, FileGuid);\r | |
1712 | NewDevicePath = AppendDevicePathNode (NewDevicePath, (EFI_DEVICE_PATH_PROTOCOL *) &FvFileNode);\r | |
1713 | *DevicePath = NewDevicePath;\r | |
1714 | return EFI_SUCCESS;\r | |
1715 | }\r | |
1716 | return EFI_NOT_FOUND;\r | |
1717 | }\r | |
1718 | \r | |
1719 | \r | |
1720 | /**\r | |
1721 | Read the EFI variable (VendorGuid/Name) and return a dynamically allocated\r | |
1722 | buffer, and the size of the buffer. If failure return NULL.\r | |
1723 | \r | |
1724 | @param Name String part of EFI variable name\r | |
1725 | @param VendorGuid GUID part of EFI variable name\r | |
1726 | @param VariableSize Returns the size of the EFI variable that was\r | |
1727 | read\r | |
1728 | \r | |
1729 | @return Dynamically allocated memory that contains a copy of the EFI variable.\r | |
1730 | @return Caller is responsible freeing the buffer.\r | |
1731 | @retval NULL Variable was not read\r | |
1732 | \r | |
1733 | **/\r | |
1734 | VOID *\r | |
1735 | EFIAPI\r | |
1736 | GetVariableAndSize (\r | |
1737 | IN CHAR16 *Name,\r | |
1738 | IN EFI_GUID *VendorGuid,\r | |
1739 | OUT UINTN *VariableSize\r | |
1740 | )\r | |
1741 | {\r | |
1742 | EFI_STATUS Status;\r | |
1743 | UINTN BufferSize;\r | |
1744 | VOID *Buffer;\r | |
1745 | \r | |
1746 | Buffer = NULL;\r | |
1747 | \r | |
1748 | //\r | |
1749 | // Pass in a zero size buffer to find the required buffer size.\r | |
1750 | //\r | |
1751 | BufferSize = 0;\r | |
1752 | Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);\r | |
1753 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
1754 | //\r | |
1755 | // Allocate the buffer to return\r | |
1756 | //\r | |
1757 | Buffer = AllocateZeroPool (BufferSize);\r | |
1758 | if (Buffer == NULL) {\r | |
1759 | return NULL;\r | |
1760 | }\r | |
1761 | //\r | |
1762 | // Read variable into the allocated buffer.\r | |
1763 | //\r | |
1764 | Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);\r | |
1765 | if (EFI_ERROR (Status)) {\r | |
1766 | BufferSize = 0;\r | |
1767 | }\r | |
1768 | }\r | |
1769 | \r | |
1770 | *VariableSize = BufferSize;\r | |
1771 | return Buffer;\r | |
1772 | }\r | |
1773 | \r | |
1774 | \r | |
1775 | /**\r | |
1776 | This function will create all handles associate with every device\r | |
1777 | path node. If the handle associate with one device path node can not\r | |
1778 | be created success, then still give one chance to do the dispatch,\r | |
1779 | which load the missing drivers if possible.\r | |
1780 | \r | |
1781 | @param DevicePathToConnect The device path which will be connected, it can\r | |
1782 | be a multi-instance device path\r | |
1783 | \r | |
1784 | @retval EFI_SUCCESS All handles associate with every device path\r | |
1785 | node have been created\r | |
1786 | @retval EFI_OUT_OF_RESOURCES There is no resource to create new handles\r | |
1787 | @retval EFI_NOT_FOUND Create the handle associate with one device\r | |
1788 | path node failed\r | |
1789 | \r | |
1790 | **/\r | |
1791 | EFI_STATUS\r | |
1792 | EFIAPI\r | |
1793 | ConnectDevicePath (\r | |
1794 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePathToConnect\r | |
1795 | )\r | |
1796 | {\r | |
1797 | EFI_STATUS Status;\r | |
1798 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
1799 | EFI_DEVICE_PATH_PROTOCOL *CopyOfDevicePath;\r | |
1800 | EFI_DEVICE_PATH_PROTOCOL *Instance;\r | |
1801 | EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;\r | |
1802 | EFI_DEVICE_PATH_PROTOCOL *Next;\r | |
1803 | EFI_HANDLE Handle;\r | |
1804 | EFI_HANDLE PreviousHandle;\r | |
1805 | UINTN Size;\r | |
1806 | \r | |
1807 | if (DevicePathToConnect == NULL) {\r | |
1808 | return EFI_SUCCESS;\r | |
1809 | }\r | |
1810 | \r | |
1811 | DevicePath = DuplicateDevicePath (DevicePathToConnect);\r | |
1812 | CopyOfDevicePath = DevicePath;\r | |
1813 | if (DevicePath == NULL) {\r | |
1814 | return EFI_OUT_OF_RESOURCES;\r | |
1815 | }\r | |
1816 | \r | |
1817 | do {\r | |
1818 | //\r | |
1819 | // The outer loop handles multi instance device paths.\r | |
1820 | // Only console variables contain multiple instance device paths.\r | |
1821 | //\r | |
1822 | // After this call DevicePath points to the next Instance\r | |
1823 | //\r | |
1824 | Instance = GetNextDevicePathInstance (&DevicePath, &Size);\r | |
1825 | Next = Instance;\r | |
1826 | while (!IsDevicePathEndType (Next)) {\r | |
1827 | Next = NextDevicePathNode (Next);\r | |
1828 | }\r | |
1829 | \r | |
1830 | SetDevicePathEndNode (Next);\r | |
1831 | \r | |
1832 | //\r | |
1833 | // Start the real work of connect with RemainingDevicePath\r | |
1834 | //\r | |
1835 | PreviousHandle = NULL;\r | |
1836 | do {\r | |
1837 | //\r | |
1838 | // Find the handle that best matches the Device Path. If it is only a\r | |
1839 | // partial match the remaining part of the device path is returned in\r | |
1840 | // RemainingDevicePath.\r | |
1841 | //\r | |
1842 | RemainingDevicePath = Instance;\r | |
1843 | Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &Handle);\r | |
1844 | \r | |
1845 | if (!EFI_ERROR (Status)) {\r | |
1846 | if (Handle == PreviousHandle) {\r | |
1847 | //\r | |
1848 | // If no forward progress is made try invoking the Dispatcher.\r | |
1849 | // A new FV may have been added to the system an new drivers\r | |
1850 | // may now be found.\r | |
1851 | // Status == EFI_SUCCESS means a driver was dispatched\r | |
1852 | // Status == EFI_NOT_FOUND means no new drivers were dispatched\r | |
1853 | //\r | |
1854 | Status = gDS->Dispatch ();\r | |
1855 | }\r | |
1856 | \r | |
1857 | if (!EFI_ERROR (Status)) {\r | |
1858 | PreviousHandle = Handle;\r | |
1859 | //\r | |
1860 | // Connect all drivers that apply to Handle and RemainingDevicePath,\r | |
1861 | // the Recursive flag is FALSE so only one level will be expanded.\r | |
1862 | //\r | |
1863 | // Do not check the connect status here, if the connect controller fail,\r | |
1864 | // then still give the chance to do dispatch, because partial\r | |
1865 | // RemainingDevicepath may be in the new FV\r | |
1866 | //\r | |
1867 | // 1. If the connect fail, RemainingDevicepath and handle will not\r | |
1868 | // change, so next time will do the dispatch, then dispatch's status\r | |
1869 | // will take effect\r | |
1870 | // 2. If the connect success, the RemainingDevicepath and handle will\r | |
23d64dda | 1871 | // change, then avoid the dispatch, we have chance to continue the\r |
b290614d | 1872 | // next connection\r |
1873 | //\r | |
1874 | gBS->ConnectController (Handle, NULL, RemainingDevicePath, FALSE);\r | |
1875 | }\r | |
1876 | }\r | |
1877 | //\r | |
1878 | // Loop until RemainingDevicePath is an empty device path\r | |
1879 | //\r | |
1880 | } while (!EFI_ERROR (Status) && !IsDevicePathEnd (RemainingDevicePath));\r | |
1881 | \r | |
1882 | } while (DevicePath != NULL);\r | |
1883 | \r | |
1884 | if (CopyOfDevicePath != NULL) {\r | |
1885 | FreePool (CopyOfDevicePath);\r | |
1886 | }\r | |
1887 | //\r | |
1888 | // All handle with DevicePath exists in the handle database\r | |
1889 | //\r | |
1890 | return Status;\r | |
1891 | }\r |