]>
Commit | Line | Data |
---|---|---|
067ed98a RN |
1 | /** @file\r |
2 | Misc library functions.\r | |
3 | \r | |
f7fdd620 | 4 | Copyright (c) 2011 - 2019, Intel Corporation. All rights reserved.<BR>\r |
fb5848c5 | 5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r |
9d510e61 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
067ed98a RN |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include "InternalBm.h"\r | |
11 | \r | |
12 | /**\r | |
13 | Delete the instance in Multi which matches partly with Single instance\r | |
14 | \r | |
15 | @param Multi A pointer to a multi-instance device path data\r | |
16 | structure.\r | |
17 | @param Single A pointer to a single-instance device path data\r | |
18 | structure.\r | |
19 | \r | |
20 | @return This function will remove the device path instances in Multi which partly\r | |
21 | match with the Single, and return the result device path. If there is no\r | |
22 | remaining device path as a result, this function will return NULL.\r | |
23 | \r | |
24 | **/\r | |
25 | EFI_DEVICE_PATH_PROTOCOL *\r | |
26 | BmDelPartMatchInstance (\r | |
27 | IN EFI_DEVICE_PATH_PROTOCOL *Multi,\r | |
28 | IN EFI_DEVICE_PATH_PROTOCOL *Single\r | |
29 | )\r | |
30 | {\r | |
31 | EFI_DEVICE_PATH_PROTOCOL *Instance;\r | |
32 | EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r | |
33 | EFI_DEVICE_PATH_PROTOCOL *TempNewDevicePath;\r | |
34 | UINTN InstanceSize;\r | |
35 | UINTN SingleDpSize;\r | |
36 | \r | |
37 | NewDevicePath = NULL;\r | |
38 | TempNewDevicePath = NULL;\r | |
39 | \r | |
1436aea4 | 40 | if ((Multi == NULL) || (Single == NULL)) {\r |
067ed98a RN |
41 | return Multi;\r |
42 | }\r | |
43 | \r | |
1436aea4 MK |
44 | Instance = GetNextDevicePathInstance (&Multi, &InstanceSize);\r |
45 | SingleDpSize = GetDevicePathSize (Single) - END_DEVICE_PATH_LENGTH;\r | |
46 | InstanceSize -= END_DEVICE_PATH_LENGTH;\r | |
067ed98a RN |
47 | \r |
48 | while (Instance != NULL) {\r | |
067ed98a RN |
49 | if (CompareMem (Instance, Single, MIN (SingleDpSize, InstanceSize)) != 0) {\r |
50 | //\r | |
51 | // Append the device path instance which does not match with Single\r | |
52 | //\r | |
53 | TempNewDevicePath = NewDevicePath;\r | |
1436aea4 | 54 | NewDevicePath = AppendDevicePathInstance (NewDevicePath, Instance);\r |
067ed98a | 55 | if (TempNewDevicePath != NULL) {\r |
1436aea4 | 56 | FreePool (TempNewDevicePath);\r |
067ed98a RN |
57 | }\r |
58 | }\r | |
1436aea4 MK |
59 | \r |
60 | FreePool (Instance);\r | |
067ed98a RN |
61 | Instance = GetNextDevicePathInstance (&Multi, &InstanceSize);\r |
62 | InstanceSize -= END_DEVICE_PATH_LENGTH;\r | |
63 | }\r | |
64 | \r | |
65 | return NewDevicePath;\r | |
66 | }\r | |
67 | \r | |
68 | /**\r | |
69 | Function compares a device path data structure to that of all the nodes of a\r | |
70 | second device path instance.\r | |
71 | \r | |
72 | @param Multi A pointer to a multi-instance device path data\r | |
73 | structure.\r | |
74 | @param Single A pointer to a single-instance device path data\r | |
75 | structure.\r | |
76 | \r | |
77 | @retval TRUE If the Single device path is contained within Multi device path.\r | |
78 | @retval FALSE The Single device path is not match within Multi device path.\r | |
79 | \r | |
80 | **/\r | |
81 | BOOLEAN\r | |
82 | BmMatchDevicePaths (\r | |
83 | IN EFI_DEVICE_PATH_PROTOCOL *Multi,\r | |
84 | IN EFI_DEVICE_PATH_PROTOCOL *Single\r | |
85 | )\r | |
86 | {\r | |
87 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
88 | EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;\r | |
89 | UINTN Size;\r | |
90 | \r | |
1436aea4 | 91 | if ((Multi == NULL) || (Single == NULL)) {\r |
067ed98a RN |
92 | return FALSE;\r |
93 | }\r | |
94 | \r | |
95 | DevicePath = Multi;\r | |
96 | DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);\r | |
97 | \r | |
98 | //\r | |
99 | // Search for the match of 'Single' in 'Multi'\r | |
100 | //\r | |
101 | while (DevicePathInst != NULL) {\r | |
102 | //\r | |
103 | // If the single device path is found in multiple device paths,\r | |
104 | // return success\r | |
105 | //\r | |
106 | if (CompareMem (Single, DevicePathInst, Size) == 0) {\r | |
107 | FreePool (DevicePathInst);\r | |
108 | return TRUE;\r | |
109 | }\r | |
110 | \r | |
111 | FreePool (DevicePathInst);\r | |
112 | DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);\r | |
113 | }\r | |
114 | \r | |
115 | return FALSE;\r | |
116 | }\r | |
117 | \r | |
118 | /**\r | |
d1102dba | 119 | This routine adjust the memory information for different memory type and\r |
665b26ba RN |
120 | save them into the variables for next boot. It resets the system when\r |
121 | memory information is updated and the current boot option belongs to\r | |
024bdafc RN |
122 | boot category instead of application category. It doesn't count the\r |
123 | reserved memory occupied by RAM Disk.\r | |
665b26ba | 124 | \r |
024bdafc RN |
125 | @param Boot TRUE if current boot option belongs to boot\r |
126 | category instead of application category.\r | |
067ed98a RN |
127 | **/\r |
128 | VOID\r | |
129 | BmSetMemoryTypeInformationVariable (\r | |
1436aea4 | 130 | IN BOOLEAN Boot\r |
067ed98a RN |
131 | )\r |
132 | {\r | |
133 | EFI_STATUS Status;\r | |
134 | EFI_MEMORY_TYPE_INFORMATION *PreviousMemoryTypeInformation;\r | |
135 | EFI_MEMORY_TYPE_INFORMATION *CurrentMemoryTypeInformation;\r | |
136 | UINTN VariableSize;\r | |
137 | UINTN Index;\r | |
138 | UINTN Index1;\r | |
139 | UINT32 Previous;\r | |
140 | UINT32 Current;\r | |
141 | UINT32 Next;\r | |
142 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
143 | BOOLEAN MemoryTypeInformationModified;\r | |
144 | BOOLEAN MemoryTypeInformationVariableExists;\r | |
145 | EFI_BOOT_MODE BootMode;\r | |
146 | \r | |
147 | MemoryTypeInformationModified = FALSE;\r | |
148 | MemoryTypeInformationVariableExists = FALSE;\r | |
149 | \r | |
067ed98a RN |
150 | BootMode = GetBootModeHob ();\r |
151 | //\r | |
152 | // In BOOT_IN_RECOVERY_MODE, Variable region is not reliable.\r | |
153 | //\r | |
154 | if (BootMode == BOOT_IN_RECOVERY_MODE) {\r | |
155 | return;\r | |
156 | }\r | |
157 | \r | |
158 | //\r | |
d1102dba | 159 | // Only check the the Memory Type Information variable in the boot mode\r |
067ed98a RN |
160 | // other than BOOT_WITH_DEFAULT_SETTINGS because the Memory Type\r |
161 | // Information is not valid in this boot mode.\r | |
162 | //\r | |
163 | if (BootMode != BOOT_WITH_DEFAULT_SETTINGS) {\r | |
164 | VariableSize = 0;\r | |
1436aea4 MK |
165 | Status = gRT->GetVariable (\r |
166 | EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,\r | |
167 | &gEfiMemoryTypeInformationGuid,\r | |
168 | NULL,\r | |
169 | &VariableSize,\r | |
170 | NULL\r | |
171 | );\r | |
067ed98a RN |
172 | if (Status == EFI_BUFFER_TOO_SMALL) {\r |
173 | MemoryTypeInformationVariableExists = TRUE;\r | |
174 | }\r | |
175 | }\r | |
176 | \r | |
177 | //\r | |
178 | // Retrieve the current memory usage statistics. If they are not found, then\r | |
179 | // no adjustments can be made to the Memory Type Information variable.\r | |
180 | //\r | |
181 | Status = EfiGetSystemConfigurationTable (\r | |
182 | &gEfiMemoryTypeInformationGuid,\r | |
1436aea4 | 183 | (VOID **)&CurrentMemoryTypeInformation\r |
067ed98a | 184 | );\r |
1436aea4 | 185 | if (EFI_ERROR (Status) || (CurrentMemoryTypeInformation == NULL)) {\r |
067ed98a RN |
186 | return;\r |
187 | }\r | |
188 | \r | |
189 | //\r | |
190 | // Get the Memory Type Information settings from Hob if they exist,\r | |
191 | // PEI is responsible for getting them from variable and build a Hob to save them.\r | |
192 | // If the previous Memory Type Information is not available, then set defaults\r | |
193 | //\r | |
194 | GuidHob = GetFirstGuidHob (&gEfiMemoryTypeInformationGuid);\r | |
195 | if (GuidHob == NULL) {\r | |
196 | //\r | |
197 | // If Platform has not built Memory Type Info into the Hob, just return.\r | |
198 | //\r | |
199 | return;\r | |
200 | }\r | |
1436aea4 | 201 | \r |
0dc3359a RN |
202 | VariableSize = GET_GUID_HOB_DATA_SIZE (GuidHob);\r |
203 | PreviousMemoryTypeInformation = AllocateCopyPool (VariableSize, GET_GUID_HOB_DATA (GuidHob));\r | |
204 | if (PreviousMemoryTypeInformation == NULL) {\r | |
205 | return;\r | |
206 | }\r | |
067ed98a RN |
207 | \r |
208 | //\r | |
209 | // Use a heuristic to adjust the Memory Type Information for the next boot\r | |
210 | //\r | |
87000d77 MK |
211 | DEBUG ((DEBUG_INFO, "Memory Previous Current Next \n"));\r |
212 | DEBUG ((DEBUG_INFO, " Type Pages Pages Pages \n"));\r | |
213 | DEBUG ((DEBUG_INFO, "====== ======== ======== ========\n"));\r | |
067ed98a RN |
214 | \r |
215 | for (Index = 0; PreviousMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r | |
067ed98a RN |
216 | for (Index1 = 0; CurrentMemoryTypeInformation[Index1].Type != EfiMaxMemoryType; Index1++) {\r |
217 | if (PreviousMemoryTypeInformation[Index].Type == CurrentMemoryTypeInformation[Index1].Type) {\r | |
218 | break;\r | |
219 | }\r | |
220 | }\r | |
1436aea4 | 221 | \r |
067ed98a RN |
222 | if (CurrentMemoryTypeInformation[Index1].Type == EfiMaxMemoryType) {\r |
223 | continue;\r | |
224 | }\r | |
225 | \r | |
226 | //\r | |
227 | // Previous is the number of pages pre-allocated\r | |
228 | // Current is the number of pages actually needed\r | |
229 | //\r | |
230 | Previous = PreviousMemoryTypeInformation[Index].NumberOfPages;\r | |
231 | Current = CurrentMemoryTypeInformation[Index1].NumberOfPages;\r | |
232 | Next = Previous;\r | |
233 | \r | |
234 | //\r | |
235 | // Inconsistent Memory Reserved across bootings may lead to S4 fail\r | |
236 | // Write next varible to 125% * current when the pre-allocated memory is:\r | |
237 | // 1. More than 150% of needed memory and boot mode is BOOT_WITH_DEFAULT_SETTING\r | |
238 | // 2. Less than the needed memory\r | |
239 | //\r | |
240 | if ((Current + (Current >> 1)) < Previous) {\r | |
241 | if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {\r | |
242 | Next = Current + (Current >> 2);\r | |
243 | }\r | |
244 | } else if (Current > Previous) {\r | |
245 | Next = Current + (Current >> 2);\r | |
246 | }\r | |
1436aea4 MK |
247 | \r |
248 | if ((Next > 0) && (Next < 4)) {\r | |
067ed98a RN |
249 | Next = 4;\r |
250 | }\r | |
251 | \r | |
252 | if (Next != Previous) {\r | |
253 | PreviousMemoryTypeInformation[Index].NumberOfPages = Next;\r | |
1436aea4 | 254 | MemoryTypeInformationModified = TRUE;\r |
067ed98a RN |
255 | }\r |
256 | \r | |
87000d77 | 257 | DEBUG ((DEBUG_INFO, " %02x %08x %08x %08x\n", PreviousMemoryTypeInformation[Index].Type, Previous, Current, Next));\r |
067ed98a RN |
258 | }\r |
259 | \r | |
260 | //\r | |
261 | // If any changes were made to the Memory Type Information settings, then set the new variable value;\r | |
262 | // Or create the variable in first boot.\r | |
263 | //\r | |
264 | if (MemoryTypeInformationModified || !MemoryTypeInformationVariableExists) {\r | |
265 | Status = BmSetVariableAndReportStatusCodeOnError (\r | |
266 | EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,\r | |
267 | &gEfiMemoryTypeInformationGuid,\r | |
268 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
269 | VariableSize,\r | |
270 | PreviousMemoryTypeInformation\r | |
271 | );\r | |
272 | \r | |
273 | if (!EFI_ERROR (Status)) {\r | |
274 | //\r | |
665b26ba RN |
275 | // If the Memory Type Information settings have been modified and the boot option belongs to boot category,\r |
276 | // then reset the platform so the new Memory Type Information setting will be used to guarantee that an S4\r | |
067ed98a RN |
277 | // entry/resume cycle will not fail.\r |
278 | //\r | |
0dc3359a | 279 | if (MemoryTypeInformationModified) {\r |
87000d77 | 280 | DEBUG ((DEBUG_INFO, "Memory Type Information settings change.\n"));\r |
0dc3359a | 281 | if (Boot && PcdGetBool (PcdResetOnMemoryTypeInformationChange)) {\r |
87000d77 | 282 | DEBUG ((DEBUG_INFO, "...Warm Reset!!!\n"));\r |
0dc3359a RN |
283 | gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);\r |
284 | }\r | |
067ed98a RN |
285 | }\r |
286 | } else {\r | |
87000d77 | 287 | DEBUG ((DEBUG_ERROR, "Memory Type Information settings cannot be saved. OS S4 may fail!\n"));\r |
067ed98a RN |
288 | }\r |
289 | }\r | |
1436aea4 | 290 | \r |
0dc3359a | 291 | FreePool (PreviousMemoryTypeInformation);\r |
067ed98a RN |
292 | }\r |
293 | \r | |
294 | /**\r | |
295 | Set the variable and report the error through status code upon failure.\r | |
296 | \r | |
297 | @param VariableName A Null-terminated string that is the name of the vendor's variable.\r | |
298 | Each VariableName is unique for each VendorGuid. VariableName must\r | |
299 | contain 1 or more characters. If VariableName is an empty string,\r | |
300 | then EFI_INVALID_PARAMETER is returned.\r | |
301 | @param VendorGuid A unique identifier for the vendor.\r | |
302 | @param Attributes Attributes bitmask to set for the variable.\r | |
d1102dba | 303 | @param DataSize The size in bytes of the Data buffer. Unless the EFI_VARIABLE_APPEND_WRITE,\r |
4073f85d | 304 | or EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute is set, a size of zero\r |
d1102dba LG |
305 | causes the variable to be deleted. When the EFI_VARIABLE_APPEND_WRITE attribute is\r |
306 | set, then a SetVariable() call with a DataSize of zero will not cause any change to\r | |
307 | the variable value (the timestamp associated with the variable may be updated however\r | |
308 | even if no new data value is provided,see the description of the\r | |
309 | EFI_VARIABLE_AUTHENTICATION_2 descriptor below. In this case the DataSize will not\r | |
310 | be zero since the EFI_VARIABLE_AUTHENTICATION_2 descriptor will be populated).\r | |
067ed98a RN |
311 | @param Data The contents for the variable.\r |
312 | \r | |
313 | @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as\r | |
314 | defined by the Attributes.\r | |
315 | @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits, name, and GUID was supplied, or the\r | |
316 | DataSize exceeds the maximum allowed.\r | |
317 | @retval EFI_INVALID_PARAMETER VariableName is an empty string.\r | |
318 | @retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.\r | |
319 | @retval EFI_DEVICE_ERROR The variable could not be retrieved due to a hardware error.\r | |
320 | @retval EFI_WRITE_PROTECTED The variable in question is read-only.\r | |
321 | @retval EFI_WRITE_PROTECTED The variable in question cannot be deleted.\r | |
4073f85d ZC |
322 | @retval EFI_SECURITY_VIOLATION The variable could not be written due to EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS\r |
323 | being set, but the AuthInfo does NOT pass the validation check carried out by the firmware.\r | |
067ed98a RN |
324 | \r |
325 | @retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.\r | |
326 | **/\r | |
327 | EFI_STATUS\r | |
328 | BmSetVariableAndReportStatusCodeOnError (\r | |
1436aea4 MK |
329 | IN CHAR16 *VariableName,\r |
330 | IN EFI_GUID *VendorGuid,\r | |
331 | IN UINT32 Attributes,\r | |
332 | IN UINTN DataSize,\r | |
333 | IN VOID *Data\r | |
067ed98a RN |
334 | )\r |
335 | {\r | |
336 | EFI_STATUS Status;\r | |
337 | EDKII_SET_VARIABLE_STATUS *SetVariableStatus;\r | |
338 | UINTN NameSize;\r | |
339 | \r | |
340 | Status = gRT->SetVariable (\r | |
341 | VariableName,\r | |
342 | VendorGuid,\r | |
343 | Attributes,\r | |
344 | DataSize,\r | |
345 | Data\r | |
346 | );\r | |
347 | if (EFI_ERROR (Status)) {\r | |
1436aea4 | 348 | NameSize = StrSize (VariableName);\r |
067ed98a RN |
349 | SetVariableStatus = AllocatePool (sizeof (EDKII_SET_VARIABLE_STATUS) + NameSize + DataSize);\r |
350 | if (SetVariableStatus != NULL) {\r | |
351 | CopyGuid (&SetVariableStatus->Guid, VendorGuid);\r | |
352 | SetVariableStatus->NameSize = NameSize;\r | |
353 | SetVariableStatus->DataSize = DataSize;\r | |
354 | SetVariableStatus->SetStatus = Status;\r | |
355 | SetVariableStatus->Attributes = Attributes;\r | |
1436aea4 MK |
356 | CopyMem (SetVariableStatus + 1, VariableName, NameSize);\r |
357 | CopyMem (((UINT8 *)(SetVariableStatus + 1)) + NameSize, Data, DataSize);\r | |
067ed98a RN |
358 | \r |
359 | REPORT_STATUS_CODE_EX (\r | |
360 | EFI_ERROR_CODE,\r | |
361 | PcdGet32 (PcdErrorCodeSetVariable),\r | |
362 | 0,\r | |
363 | NULL,\r | |
364 | &gEdkiiStatusCodeDataTypeVariableGuid,\r | |
365 | SetVariableStatus,\r | |
366 | sizeof (EDKII_SET_VARIABLE_STATUS) + NameSize + DataSize\r | |
367 | );\r | |
368 | \r | |
369 | FreePool (SetVariableStatus);\r | |
370 | }\r | |
371 | }\r | |
372 | \r | |
373 | return Status;\r | |
374 | }\r | |
375 | \r | |
067ed98a RN |
376 | /**\r |
377 | Print the device path info.\r | |
378 | \r | |
379 | @param DevicePath The device path need to print.\r | |
380 | **/\r | |
381 | VOID\r | |
382 | BmPrintDp (\r | |
1436aea4 | 383 | EFI_DEVICE_PATH_PROTOCOL *DevicePath\r |
067ed98a RN |
384 | )\r |
385 | {\r | |
1436aea4 | 386 | CHAR16 *Str;\r |
067ed98a RN |
387 | \r |
388 | Str = ConvertDevicePathToText (DevicePath, FALSE, FALSE);\r | |
87000d77 | 389 | DEBUG ((DEBUG_INFO, "%s", Str));\r |
067ed98a RN |
390 | if (Str != NULL) {\r |
391 | FreePool (Str);\r | |
392 | }\r | |
393 | }\r | |
418e8cd9 RN |
394 | \r |
395 | /**\r | |
396 | Convert a single character to number.\r | |
397 | It assumes the input Char is in the scope of L'0' ~ L'9' and L'A' ~ L'F'\r | |
398 | \r | |
399 | @param Char The input char which need to convert to int.\r | |
400 | \r | |
401 | @return The converted 8-bit number or (UINTN) -1 if conversion failed.\r | |
402 | **/\r | |
403 | UINTN\r | |
404 | BmCharToUint (\r | |
1436aea4 | 405 | IN CHAR16 Char\r |
418e8cd9 RN |
406 | )\r |
407 | {\r | |
408 | if ((Char >= L'0') && (Char <= L'9')) {\r | |
16f69227 | 409 | return (Char - L'0');\r |
418e8cd9 RN |
410 | }\r |
411 | \r | |
412 | if ((Char >= L'A') && (Char <= L'F')) {\r | |
16f69227 | 413 | return (Char - L'A' + 0xA);\r |
418e8cd9 RN |
414 | }\r |
415 | \r | |
1436aea4 | 416 | return (UINTN)-1;\r |
418e8cd9 RN |
417 | }\r |
418 | \r | |
b33af221 RN |
419 | /**\r |
420 | Dispatch the deferred images that are returned from all DeferredImageLoad instances.\r | |
421 | \r | |
422 | @retval EFI_SUCCESS At least one deferred image is loaded successfully and started.\r | |
423 | @retval EFI_NOT_FOUND There is no deferred image.\r | |
424 | @retval EFI_ACCESS_DENIED There are deferred images but all of them are failed to load.\r | |
425 | **/\r | |
426 | EFI_STATUS\r | |
427 | EFIAPI\r | |
428 | EfiBootManagerDispatchDeferredImages (\r | |
429 | VOID\r | |
430 | )\r | |
431 | {\r | |
1436aea4 MK |
432 | EFI_STATUS Status;\r |
433 | EFI_DEFERRED_IMAGE_LOAD_PROTOCOL *DeferredImage;\r | |
434 | UINTN HandleCount;\r | |
435 | EFI_HANDLE *Handles;\r | |
436 | UINTN Index;\r | |
437 | UINTN ImageIndex;\r | |
438 | EFI_DEVICE_PATH_PROTOCOL *ImageDevicePath;\r | |
439 | VOID *Image;\r | |
440 | UINTN ImageSize;\r | |
441 | BOOLEAN BootOption;\r | |
442 | EFI_HANDLE ImageHandle;\r | |
443 | UINTN ImageCount;\r | |
444 | UINTN LoadCount;\r | |
b33af221 RN |
445 | \r |
446 | //\r | |
447 | // Find all the deferred image load protocols.\r | |
448 | //\r | |
449 | HandleCount = 0;\r | |
1436aea4 MK |
450 | Handles = NULL;\r |
451 | Status = gBS->LocateHandleBuffer (\r | |
452 | ByProtocol,\r | |
453 | &gEfiDeferredImageLoadProtocolGuid,\r | |
454 | NULL,\r | |
455 | &HandleCount,\r | |
456 | &Handles\r | |
457 | );\r | |
b33af221 RN |
458 | if (EFI_ERROR (Status)) {\r |
459 | return EFI_NOT_FOUND;\r | |
460 | }\r | |
461 | \r | |
462 | ImageCount = 0;\r | |
463 | LoadCount = 0;\r | |
464 | for (Index = 0; Index < HandleCount; Index++) {\r | |
1436aea4 | 465 | Status = gBS->HandleProtocol (Handles[Index], &gEfiDeferredImageLoadProtocolGuid, (VOID **)&DeferredImage);\r |
b33af221 RN |
466 | if (EFI_ERROR (Status)) {\r |
467 | continue;\r | |
468 | }\r | |
469 | \r | |
1436aea4 | 470 | for (ImageIndex = 0; ; ImageIndex++) {\r |
b33af221 RN |
471 | //\r |
472 | // Load all the deferred images in this protocol instance.\r | |
473 | //\r | |
474 | Status = DeferredImage->GetImageInfo (\r | |
475 | DeferredImage,\r | |
476 | ImageIndex,\r | |
477 | &ImageDevicePath,\r | |
1436aea4 | 478 | (VOID **)&Image,\r |
b33af221 RN |
479 | &ImageSize,\r |
480 | &BootOption\r | |
481 | );\r | |
482 | if (EFI_ERROR (Status)) {\r | |
483 | break;\r | |
484 | }\r | |
1436aea4 | 485 | \r |
b33af221 RN |
486 | ImageCount++;\r |
487 | //\r | |
488 | // Load and start the image.\r | |
489 | //\r | |
490 | Status = gBS->LoadImage (\r | |
1436aea4 MK |
491 | BootOption,\r |
492 | gImageHandle,\r | |
493 | ImageDevicePath,\r | |
494 | NULL,\r | |
495 | 0,\r | |
496 | &ImageHandle\r | |
497 | );\r | |
f7fdd620 DB |
498 | if (EFI_ERROR (Status)) {\r |
499 | //\r | |
500 | // With EFI_SECURITY_VIOLATION retval, the Image was loaded and an ImageHandle was created\r | |
501 | // with a valid EFI_LOADED_IMAGE_PROTOCOL, but the image can not be started right now.\r | |
502 | // If the caller doesn't have the option to defer the execution of an image, we should\r | |
503 | // unload image for the EFI_SECURITY_VIOLATION to avoid resource leak.\r | |
504 | //\r | |
505 | if (Status == EFI_SECURITY_VIOLATION) {\r | |
506 | gBS->UnloadImage (ImageHandle);\r | |
507 | }\r | |
508 | } else {\r | |
b33af221 RN |
509 | LoadCount++;\r |
510 | //\r | |
511 | // Before calling the image, enable the Watchdog Timer for\r | |
512 | // a 5 Minute period\r | |
513 | //\r | |
514 | gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);\r | |
d4305688 | 515 | gBS->StartImage (ImageHandle, NULL, NULL);\r |
b33af221 RN |
516 | \r |
517 | //\r | |
518 | // Clear the Watchdog Timer after the image returns.\r | |
519 | //\r | |
520 | gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);\r | |
521 | }\r | |
522 | }\r | |
523 | }\r | |
1436aea4 | 524 | \r |
b33af221 RN |
525 | if (Handles != NULL) {\r |
526 | FreePool (Handles);\r | |
527 | }\r | |
528 | \r | |
529 | if (ImageCount == 0) {\r | |
530 | return EFI_NOT_FOUND;\r | |
531 | } else {\r | |
532 | if (LoadCount == 0) {\r | |
533 | return EFI_ACCESS_DENIED;\r | |
534 | } else {\r | |
535 | return EFI_SUCCESS;\r | |
536 | }\r | |
537 | }\r | |
538 | }\r |