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504214c4 | 1 | /** @file\r |
504214c4 | 2 | The internal header file includes the common header files, defines\r |
8a2d4996 | 3 | internal structure and functions used by Variable modules.\r |
504214c4 | 4 | \r |
904e0ca9 | 5 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r |
e5eed7d3 | 6 | This program and the accompanying materials\r |
8d3a5c82 | 7 | are licensed and made available under the terms and conditions of the BSD License\r |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
504214c4 | 14 | **/\r |
8d3a5c82 | 15 | \r |
7c80e839 | 16 | #ifndef _VARIABLE_H_\r |
17 | #define _VARIABLE_H_\r | |
8d3a5c82 | 18 | \r |
39099938 | 19 | #include <PiDxe.h>\r |
8d3a5c82 | 20 | #include <Protocol/VariableWrite.h>\r |
88a5561c | 21 | #include <Protocol/FaultTolerantWrite.h>\r |
8d3a5c82 | 22 | #include <Protocol/FirmwareVolumeBlock.h>\r |
23 | #include <Protocol/Variable.h>\r | |
ff843847 | 24 | #include <Protocol/VariableLock.h>\r |
efb01a10 | 25 | #include <Protocol/VarCheck.h>\r |
8d3a5c82 | 26 | #include <Library/PcdLib.h>\r |
0f7aff72 | 27 | #include <Library/HobLib.h>\r |
8d3a5c82 | 28 | #include <Library/UefiDriverEntryPoint.h>\r |
29 | #include <Library/DxeServicesTableLib.h>\r | |
30 | #include <Library/UefiRuntimeLib.h>\r | |
31 | #include <Library/DebugLib.h>\r | |
32 | #include <Library/BaseMemoryLib.h>\r | |
8d3a5c82 | 33 | #include <Library/UefiBootServicesTableLib.h>\r |
34 | #include <Library/UefiLib.h>\r | |
35 | #include <Library/BaseLib.h>\r | |
4cf894eb | 36 | #include <Library/SynchronizationLib.h>\r |
8d3a5c82 | 37 | #include <Library/MemoryAllocationLib.h>\r |
fa0737a8 | 38 | #include <Library/AuthVariableLib.h>\r |
8021f4c7 | 39 | #include <Library/VarCheckLib.h>\r |
052ad7e1 | 40 | #include <Guid/GlobalVariable.h>\r |
01a5c994 | 41 | #include <Guid/EventGroup.h>\r |
3709c4cd | 42 | #include <Guid/VariableFormat.h>\r |
d6550260 | 43 | #include <Guid/SystemNvDataGuid.h>\r |
3e02ebb2 | 44 | #include <Guid/FaultTolerantWrite.h>\r |
4edb1866 | 45 | #include <Guid/VarErrorFlag.h>\r |
8d3a5c82 | 46 | \r |
00663d04 LE |
47 | #include "PrivilegePolymorphic.h"\r |
48 | \r | |
904e0ca9 SZ |
49 | #define NV_STORAGE_VARIABLE_BASE (EFI_PHYSICAL_ADDRESS) \\r |
50 | (PcdGet64 (PcdFlashNvStorageVariableBase64) != 0 ? \\r | |
51 | PcdGet64 (PcdFlashNvStorageVariableBase64) : \\r | |
52 | PcdGet32 (PcdFlashNvStorageVariableBase))\r | |
53 | \r | |
fa0737a8 SZ |
54 | #define EFI_VARIABLE_ATTRIBUTES_MASK (EFI_VARIABLE_NON_VOLATILE | \\r |
55 | EFI_VARIABLE_BOOTSERVICE_ACCESS | \\r | |
56 | EFI_VARIABLE_RUNTIME_ACCESS | \\r | |
57 | EFI_VARIABLE_HARDWARE_ERROR_RECORD | \\r | |
fa0737a8 SZ |
58 | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \\r |
59 | EFI_VARIABLE_APPEND_WRITE)\r | |
60 | \r | |
255a3f33 RN |
61 | ///\r |
62 | /// The size of a 3 character ISO639 language code.\r | |
63 | ///\r | |
64 | #define ISO_639_2_ENTRY_SIZE 3\r | |
65 | \r | |
0f7aff72 RN |
66 | typedef enum {\r |
67 | VariableStoreTypeVolatile,\r | |
68 | VariableStoreTypeHob,\r | |
69 | VariableStoreTypeNv,\r | |
70 | VariableStoreTypeMax\r | |
71 | } VARIABLE_STORE_TYPE;\r | |
72 | \r | |
8d3a5c82 | 73 | typedef struct {\r |
74 | VARIABLE_HEADER *CurrPtr;\r | |
23b06935 SZ |
75 | //\r |
76 | // If both ADDED and IN_DELETED_TRANSITION variable are present,\r | |
77 | // InDeletedTransitionPtr will point to the IN_DELETED_TRANSITION one.\r | |
78 | // Otherwise, CurrPtr will point to the ADDED or IN_DELETED_TRANSITION one,\r | |
79 | // and InDeletedTransitionPtr will be NULL at the same time.\r | |
80 | //\r | |
81 | VARIABLE_HEADER *InDeletedTransitionPtr;\r | |
8d3a5c82 | 82 | VARIABLE_HEADER *EndPtr;\r |
83 | VARIABLE_HEADER *StartPtr;\r | |
84 | BOOLEAN Volatile;\r | |
85 | } VARIABLE_POINTER_TRACK;\r | |
86 | \r | |
87 | typedef struct {\r | |
0f7aff72 | 88 | EFI_PHYSICAL_ADDRESS HobVariableBase;\r |
8d3a5c82 | 89 | EFI_PHYSICAL_ADDRESS VolatileVariableBase;\r |
90 | EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;\r | |
91 | EFI_LOCK VariableServicesLock;\r | |
fdb7765f | 92 | UINT32 ReentrantState;\r |
fa0737a8 SZ |
93 | BOOLEAN AuthFormat;\r |
94 | BOOLEAN AuthSupport;\r | |
7cd69959 | 95 | BOOLEAN EmuNvMode;\r |
8d3a5c82 | 96 | } VARIABLE_GLOBAL;\r |
97 | \r | |
98 | typedef struct {\r | |
052ad7e1 | 99 | VARIABLE_GLOBAL VariableGlobal;\r |
8d3a5c82 | 100 | UINTN VolatileLastVariableOffset;\r |
101 | UINTN NonVolatileLastVariableOffset;\r | |
4edb1866 SZ |
102 | UINTN CommonVariableSpace;\r |
103 | UINTN CommonMaxUserVariableSpace;\r | |
104 | UINTN CommonRuntimeVariableSpace;\r | |
2fcdca1d | 105 | UINTN CommonVariableTotalSize;\r |
4edb1866 | 106 | UINTN CommonUserVariableTotalSize;\r |
2fcdca1d | 107 | UINTN HwErrVariableTotalSize;\r |
fa0737a8 SZ |
108 | UINTN MaxVariableSize;\r |
109 | UINTN MaxAuthVariableSize;\r | |
9b4a2032 | 110 | UINTN MaxVolatileVariableSize;\r |
fa0737a8 | 111 | UINTN ScratchBufferSize;\r |
255a3f33 RN |
112 | CHAR8 *PlatformLangCodes;\r |
113 | CHAR8 *LangCodes;\r | |
114 | CHAR8 *PlatformLang;\r | |
115 | CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];\r | |
8a9e0b72 | 116 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvbInstance;\r |
052ad7e1 A |
117 | } VARIABLE_MODULE_GLOBAL;\r |
118 | \r | |
335e2681 SZ |
119 | /**\r |
120 | Flush the HOB variable to flash.\r | |
121 | \r | |
122 | @param[in] VariableName Name of variable has been updated or deleted.\r | |
123 | @param[in] VendorGuid Guid of variable has been updated or deleted.\r | |
124 | \r | |
125 | **/\r | |
126 | VOID\r | |
127 | FlushHobVariableToFlash (\r | |
128 | IN CHAR16 *VariableName,\r | |
129 | IN EFI_GUID *VendorGuid\r | |
130 | );\r | |
131 | \r | |
c24b392c | 132 | /**\r |
133 | Writes a buffer to variable storage space, in the working block.\r | |
134 | \r | |
8a2d4996 | 135 | This function writes a buffer to variable storage space into a firmware\r |
136 | volume block device. The destination is specified by the parameter\r | |
c24b392c | 137 | VariableBase. Fault Tolerant Write protocol is used for writing.\r |
138 | \r | |
8a2d4996 | 139 | @param VariableBase Base address of the variable to write.\r |
128ef095 | 140 | @param VariableBuffer Point to the variable data buffer.\r |
c24b392c | 141 | \r |
8a2d4996 | 142 | @retval EFI_SUCCESS The function completed successfully.\r |
143 | @retval EFI_NOT_FOUND Fail to locate Fault Tolerant Write protocol.\r | |
144 | @retval EFI_ABORTED The function could not complete successfully.\r | |
c24b392c | 145 | \r |
146 | **/\r | |
147 | EFI_STATUS\r | |
148 | FtwVariableSpace (\r | |
149 | IN EFI_PHYSICAL_ADDRESS VariableBase,\r | |
128ef095 | 150 | IN VARIABLE_STORE_HEADER *VariableBuffer\r |
c24b392c | 151 | );\r |
152 | \r | |
fa0737a8 SZ |
153 | /**\r |
154 | Finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
155 | \r | |
156 | This code finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
157 | If VariableName is an empty string, then we just return the first\r | |
158 | qualified variable without comparing VariableName and VendorGuid.\r | |
159 | If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check\r | |
160 | at runtime when searching existing variable, only VariableName and VendorGuid are compared.\r | |
161 | Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.\r | |
162 | \r | |
163 | @param[in] VariableName Name of the variable to be found.\r | |
164 | @param[in] VendorGuid Vendor GUID to be found.\r | |
165 | @param[out] PtrTrack VARIABLE_POINTER_TRACK structure for output,\r | |
166 | including the range searched and the target position.\r | |
167 | @param[in] Global Pointer to VARIABLE_GLOBAL structure, including\r | |
168 | base of volatile variable storage area, base of\r | |
169 | NV variable storage area, and a lock.\r | |
170 | @param[in] IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r | |
171 | check at runtime when searching variable.\r | |
172 | \r | |
173 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r | |
174 | VendorGuid is NULL.\r | |
175 | @retval EFI_SUCCESS Variable successfully found.\r | |
176 | @retval EFI_NOT_FOUND Variable not found\r | |
177 | \r | |
178 | **/\r | |
179 | EFI_STATUS\r | |
180 | FindVariable (\r | |
181 | IN CHAR16 *VariableName,\r | |
182 | IN EFI_GUID *VendorGuid,\r | |
183 | OUT VARIABLE_POINTER_TRACK *PtrTrack,\r | |
184 | IN VARIABLE_GLOBAL *Global,\r | |
185 | IN BOOLEAN IgnoreRtCheck\r | |
186 | );\r | |
c24b392c | 187 | \r |
8a2d4996 | 188 | /**\r |
8a2d4996 | 189 | \r |
fa0737a8 | 190 | Gets the pointer to the end of the variable storage area.\r |
8a2d4996 | 191 | \r |
fa0737a8 SZ |
192 | This function gets pointer to the end of the variable storage\r |
193 | area, according to the input variable store header.\r | |
8a2d4996 | 194 | \r |
fa0737a8 | 195 | @param VarStoreHeader Pointer to the Variable Store Header.\r |
8a2d4996 | 196 | \r |
fa0737a8 SZ |
197 | @return Pointer to the end of the variable storage area.\r |
198 | \r | |
199 | **/\r | |
200 | VARIABLE_HEADER *\r | |
201 | GetEndPointer (\r | |
202 | IN VARIABLE_STORE_HEADER *VarStoreHeader\r | |
203 | );\r | |
204 | \r | |
205 | /**\r | |
206 | This code gets the size of variable header.\r | |
207 | \r | |
208 | @return Size of variable header in bytes in type UINTN.\r | |
209 | \r | |
210 | **/\r | |
211 | UINTN\r | |
212 | GetVariableHeaderSize (\r | |
213 | VOID\r | |
214 | );\r | |
215 | \r | |
216 | /**\r | |
217 | \r | |
218 | This code gets the pointer to the variable name.\r | |
219 | \r | |
220 | @param Variable Pointer to the Variable Header.\r | |
221 | \r | |
222 | @return Pointer to Variable Name which is Unicode encoding.\r | |
223 | \r | |
224 | **/\r | |
225 | CHAR16 *\r | |
226 | GetVariableNamePtr (\r | |
227 | IN VARIABLE_HEADER *Variable\r | |
228 | );\r | |
229 | \r | |
230 | /**\r | |
231 | This code gets the pointer to the variable guid.\r | |
232 | \r | |
233 | @param Variable Pointer to the Variable Header.\r | |
234 | \r | |
235 | @return A EFI_GUID* pointer to Vendor Guid.\r | |
236 | \r | |
237 | **/\r | |
238 | EFI_GUID *\r | |
239 | GetVendorGuidPtr (\r | |
240 | IN VARIABLE_HEADER *Variable\r | |
241 | );\r | |
242 | \r | |
243 | /**\r | |
244 | \r | |
245 | This code gets the pointer to the variable data.\r | |
246 | \r | |
247 | @param Variable Pointer to the Variable Header.\r | |
248 | \r | |
249 | @return Pointer to Variable Data.\r | |
250 | \r | |
251 | **/\r | |
252 | UINT8 *\r | |
253 | GetVariableDataPtr (\r | |
254 | IN VARIABLE_HEADER *Variable\r | |
255 | );\r | |
256 | \r | |
257 | /**\r | |
258 | \r | |
259 | This code gets the size of variable data.\r | |
260 | \r | |
261 | @param Variable Pointer to the Variable Header.\r | |
262 | \r | |
263 | @return Size of variable in bytes.\r | |
264 | \r | |
265 | **/\r | |
266 | UINTN\r | |
267 | DataSizeOfVariable (\r | |
268 | IN VARIABLE_HEADER *Variable\r | |
269 | );\r | |
270 | \r | |
271 | /**\r | |
272 | This function is to check if the remaining variable space is enough to set\r | |
273 | all Variables from argument list successfully. The purpose of the check\r | |
274 | is to keep the consistency of the Variables to be in variable storage.\r | |
8a2d4996 | 275 | \r |
fa0737a8 SZ |
276 | Note: Variables are assumed to be in same storage.\r |
277 | The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r | |
278 | so follow the argument sequence to check the Variables.\r | |
279 | \r | |
280 | @param[in] Attributes Variable attributes for Variable entries.\r | |
281 | @param[in] Marker VA_LIST style variable argument list.\r | |
282 | The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r | |
283 | A NULL terminates the list. The VariableSize of\r | |
284 | VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r | |
285 | It will be changed to variable total size as output.\r | |
286 | \r | |
287 | @retval TRUE Have enough variable space to set the Variables successfully.\r | |
288 | @retval FALSE No enough variable space to set the Variables successfully.\r | |
289 | \r | |
290 | **/\r | |
291 | BOOLEAN\r | |
292 | EFIAPI\r | |
293 | CheckRemainingSpaceForConsistencyInternal (\r | |
294 | IN UINT32 Attributes,\r | |
295 | IN VA_LIST Marker\r | |
296 | );\r | |
297 | \r | |
298 | /**\r | |
299 | Update the variable region with Variable information. If EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS is set,\r | |
300 | index of associated public key is needed.\r | |
8a2d4996 | 301 | \r |
fa0737a8 SZ |
302 | @param[in] VariableName Name of variable.\r |
303 | @param[in] VendorGuid Guid of variable.\r | |
304 | @param[in] Data Variable data.\r | |
305 | @param[in] DataSize Size of data. 0 means delete.\r | |
306 | @param[in] Attributes Attributes of the variable.\r | |
307 | @param[in] KeyIndex Index of associated public key.\r | |
308 | @param[in] MonotonicCount Value of associated monotonic count.\r | |
23b06935 | 309 | @param[in, out] Variable The variable information that is used to keep track of variable usage.\r |
8a2d4996 | 310 | \r |
fa0737a8 | 311 | @param[in] TimeStamp Value of associated TimeStamp.\r |
8a2d4996 | 312 | \r |
fa0737a8 | 313 | @retval EFI_SUCCESS The update operation is success.\r |
8a2d4996 | 314 | @retval EFI_OUT_OF_RESOURCES Variable region is full, cannot write other data into this region.\r |
315 | \r | |
316 | **/\r | |
317 | EFI_STATUS\r | |
318 | UpdateVariable (\r | |
319 | IN CHAR16 *VariableName,\r | |
320 | IN EFI_GUID *VendorGuid,\r | |
321 | IN VOID *Data,\r | |
322 | IN UINTN DataSize,\r | |
323 | IN UINT32 Attributes OPTIONAL,\r | |
fa0737a8 SZ |
324 | IN UINT32 KeyIndex OPTIONAL,\r |
325 | IN UINT64 MonotonicCount OPTIONAL,\r | |
326 | IN OUT VARIABLE_POINTER_TRACK *Variable,\r | |
327 | IN EFI_TIME *TimeStamp OPTIONAL\r | |
8a2d4996 | 328 | );\r |
329 | \r | |
330 | \r | |
331 | /**\r | |
332 | Return TRUE if ExitBootServices () has been called.\r | |
fa0737a8 | 333 | \r |
8a2d4996 | 334 | @retval TRUE If ExitBootServices () has been called.\r |
335 | **/\r | |
336 | BOOLEAN\r | |
337 | AtRuntime (\r | |
338 | VOID\r | |
339 | );\r | |
340 | \r | |
341 | /**\r | |
342 | Initializes a basic mutual exclusion lock.\r | |
343 | \r | |
fa0737a8 SZ |
344 | This function initializes a basic mutual exclusion lock to the released state\r |
345 | and returns the lock. Each lock provides mutual exclusion access at its task\r | |
8a2d4996 | 346 | priority level. Since there is no preemption or multiprocessor support in EFI,\r |
347 | acquiring the lock only consists of raising to the locks TPL.\r | |
348 | If Lock is NULL, then ASSERT().\r | |
349 | If Priority is not a valid TPL value, then ASSERT().\r | |
350 | \r | |
351 | @param Lock A pointer to the lock data structure to initialize.\r | |
352 | @param Priority EFI TPL is associated with the lock.\r | |
353 | \r | |
354 | @return The lock.\r | |
355 | \r | |
356 | **/\r | |
357 | EFI_LOCK *\r | |
358 | InitializeLock (\r | |
359 | IN OUT EFI_LOCK *Lock,\r | |
360 | IN EFI_TPL Priority\r | |
361 | );\r | |
362 | \r | |
fa0737a8 | 363 | \r |
8a2d4996 | 364 | /**\r |
365 | Acquires lock only at boot time. Simply returns at runtime.\r | |
366 | \r | |
367 | This is a temperary function that will be removed when\r | |
368 | EfiAcquireLock() in UefiLib can handle the call in UEFI\r | |
369 | Runtimer driver in RT phase.\r | |
370 | It calls EfiAcquireLock() at boot time, and simply returns\r | |
371 | at runtime.\r | |
372 | \r | |
373 | @param Lock A pointer to the lock to acquire.\r | |
374 | \r | |
375 | **/\r | |
376 | VOID\r | |
377 | AcquireLockOnlyAtBootTime (\r | |
378 | IN EFI_LOCK *Lock\r | |
379 | );\r | |
380 | \r | |
381 | \r | |
382 | /**\r | |
383 | Releases lock only at boot time. Simply returns at runtime.\r | |
384 | \r | |
385 | This is a temperary function which will be removed when\r | |
386 | EfiReleaseLock() in UefiLib can handle the call in UEFI\r | |
387 | Runtimer driver in RT phase.\r | |
388 | It calls EfiReleaseLock() at boot time and simply returns\r | |
389 | at runtime.\r | |
390 | \r | |
391 | @param Lock A pointer to the lock to release.\r | |
392 | \r | |
393 | **/\r | |
394 | VOID\r | |
395 | ReleaseLockOnlyAtBootTime (\r | |
396 | IN EFI_LOCK *Lock\r | |
fa0737a8 | 397 | );\r |
8a2d4996 | 398 | \r |
399 | /**\r | |
0a18956d | 400 | Retrieve the FVB protocol interface by HANDLE.\r |
8a2d4996 | 401 | \r |
402 | @param[in] FvBlockHandle The handle of FVB protocol that provides services for\r | |
403 | reading, writing, and erasing the target block.\r | |
404 | @param[out] FvBlock The interface of FVB protocol\r | |
405 | \r | |
406 | @retval EFI_SUCCESS The interface information for the specified protocol was returned.\r | |
407 | @retval EFI_UNSUPPORTED The device does not support the FVB protocol.\r | |
408 | @retval EFI_INVALID_PARAMETER FvBlockHandle is not a valid EFI_HANDLE or FvBlock is NULL.\r | |
fa0737a8 | 409 | \r |
8a2d4996 | 410 | **/\r |
411 | EFI_STATUS\r | |
412 | GetFvbByHandle (\r | |
413 | IN EFI_HANDLE FvBlockHandle,\r | |
414 | OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvBlock\r | |
415 | );\r | |
416 | \r | |
8a2d4996 | 417 | /**\r |
418 | Function returns an array of handles that support the FVB protocol\r | |
fa0737a8 | 419 | in a buffer allocated from pool.\r |
8a2d4996 | 420 | \r |
421 | @param[out] NumberHandles The number of handles returned in Buffer.\r | |
422 | @param[out] Buffer A pointer to the buffer to return the requested\r | |
423 | array of handles that support FVB protocol.\r | |
424 | \r | |
425 | @retval EFI_SUCCESS The array of handles was returned in Buffer, and the number of\r | |
426 | handles in Buffer was returned in NumberHandles.\r | |
427 | @retval EFI_NOT_FOUND No FVB handle was found.\r | |
428 | @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the matching results.\r | |
429 | @retval EFI_INVALID_PARAMETER NumberHandles is NULL or Buffer is NULL.\r | |
fa0737a8 | 430 | \r |
8a2d4996 | 431 | **/\r |
432 | EFI_STATUS\r | |
433 | GetFvbCountAndBuffer (\r | |
434 | OUT UINTN *NumberHandles,\r | |
435 | OUT EFI_HANDLE **Buffer\r | |
436 | );\r | |
437 | \r | |
438 | /**\r | |
439 | Initializes variable store area for non-volatile and volatile variable.\r | |
440 | \r | |
441 | @retval EFI_SUCCESS Function successfully executed.\r | |
442 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r | |
443 | \r | |
444 | **/\r | |
445 | EFI_STATUS\r | |
446 | VariableCommonInitialize (\r | |
447 | VOID\r | |
448 | );\r | |
449 | \r | |
450 | /**\r | |
451 | This function reclaims variable storage if free size is below the threshold.\r | |
fa0737a8 | 452 | \r |
8a2d4996 | 453 | **/\r |
454 | VOID\r | |
455 | ReclaimForOS(\r | |
456 | VOID\r | |
fa0737a8 SZ |
457 | );\r |
458 | \r | |
459 | /**\r | |
460 | Get non-volatile maximum variable size.\r | |
8a2d4996 | 461 | \r |
fa0737a8 SZ |
462 | @return Non-volatile maximum variable size.\r |
463 | \r | |
464 | **/\r | |
465 | UINTN\r | |
466 | GetNonVolatileMaxVariableSize (\r | |
467 | VOID\r | |
468 | );\r | |
8a2d4996 | 469 | \r |
9b4a2032 LE |
470 | /**\r |
471 | Get maximum variable size, covering both non-volatile and volatile variables.\r | |
472 | \r | |
473 | @return Maximum variable size.\r | |
474 | \r | |
475 | **/\r | |
476 | UINTN\r | |
477 | GetMaxVariableSize (\r | |
478 | VOID\r | |
479 | );\r | |
480 | \r | |
8a2d4996 | 481 | /**\r |
904e0ca9 | 482 | Initializes variable write service.\r |
8a2d4996 | 483 | \r |
484 | @retval EFI_SUCCESS Function successfully executed.\r | |
485 | @retval Others Fail to initialize the variable service.\r | |
486 | \r | |
487 | **/\r | |
488 | EFI_STATUS\r | |
489 | VariableWriteServiceInitialize (\r | |
490 | VOID\r | |
491 | );\r | |
fa0737a8 | 492 | \r |
8a2d4996 | 493 | /**\r |
0a18956d | 494 | Retrieve the SMM Fault Tolerent Write protocol interface.\r |
8a2d4996 | 495 | \r |
496 | @param[out] FtwProtocol The interface of SMM Ftw protocol\r | |
497 | \r | |
498 | @retval EFI_SUCCESS The SMM SAR protocol instance was found and returned in SarProtocol.\r | |
499 | @retval EFI_NOT_FOUND The SMM SAR protocol instance was not found.\r | |
500 | @retval EFI_INVALID_PARAMETER SarProtocol is NULL.\r | |
501 | \r | |
502 | **/\r | |
503 | EFI_STATUS\r | |
504 | GetFtwProtocol (\r | |
505 | OUT VOID **FtwProtocol\r | |
506 | );\r | |
507 | \r | |
508 | /**\r | |
509 | Get the proper fvb handle and/or fvb protocol by the given Flash address.\r | |
510 | \r | |
511 | @param[in] Address The Flash address.\r | |
512 | @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r | |
513 | @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r | |
514 | \r | |
515 | **/\r | |
516 | EFI_STATUS\r | |
517 | GetFvbInfoByAddress (\r | |
518 | IN EFI_PHYSICAL_ADDRESS Address,\r | |
519 | OUT EFI_HANDLE *FvbHandle OPTIONAL,\r | |
520 | OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r | |
521 | );\r | |
522 | \r | |
523 | /**\r | |
524 | \r | |
525 | This code finds variable in storage blocks (Volatile or Non-Volatile).\r | |
526 | \r | |
fa0737a8 SZ |
527 | Caution: This function may receive untrusted input.\r |
528 | This function may be invoked in SMM mode, and datasize and data are external input.\r | |
529 | This function will do basic validation, before parse the data.\r | |
530 | \r | |
8a2d4996 | 531 | @param VariableName Name of Variable to be found.\r |
532 | @param VendorGuid Variable vendor GUID.\r | |
533 | @param Attributes Attribute value of the variable found.\r | |
534 | @param DataSize Size of Data found. If size is less than the\r | |
535 | data, this value contains the required size.\r | |
746645bd SZ |
536 | @param Data The buffer to return the contents of the variable. May be NULL\r |
537 | with a zero DataSize in order to determine the size buffer needed.\r | |
fa0737a8 | 538 | \r |
8a2d4996 | 539 | @return EFI_INVALID_PARAMETER Invalid parameter.\r |
540 | @return EFI_SUCCESS Find the specified variable.\r | |
541 | @return EFI_NOT_FOUND Not found.\r | |
542 | @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r | |
543 | \r | |
544 | **/\r | |
545 | EFI_STATUS\r | |
546 | EFIAPI\r | |
547 | VariableServiceGetVariable (\r | |
548 | IN CHAR16 *VariableName,\r | |
549 | IN EFI_GUID *VendorGuid,\r | |
550 | OUT UINT32 *Attributes OPTIONAL,\r | |
551 | IN OUT UINTN *DataSize,\r | |
746645bd | 552 | OUT VOID *Data OPTIONAL\r |
8a2d4996 | 553 | );\r |
554 | \r | |
fa0737a8 SZ |
555 | /**\r |
556 | This code Finds the Next available variable.\r | |
557 | \r | |
558 | Caution: This function may receive untrusted input.\r | |
559 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
560 | \r | |
561 | @param[in] VariableName Pointer to variable name.\r | |
562 | @param[in] VendorGuid Variable Vendor Guid.\r | |
563 | @param[out] VariablePtr Pointer to variable header address.\r | |
564 | \r | |
6f817f9b SZ |
565 | @retval EFI_SUCCESS The function completed successfully.\r |
566 | @retval EFI_NOT_FOUND The next variable was not found.\r | |
567 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while VendorGuid is NULL.\r | |
568 | @retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and\r | |
569 | GUID of an existing variable.\r | |
fa0737a8 SZ |
570 | \r |
571 | **/\r | |
572 | EFI_STATUS\r | |
573 | EFIAPI\r | |
574 | VariableServiceGetNextVariableInternal (\r | |
575 | IN CHAR16 *VariableName,\r | |
576 | IN EFI_GUID *VendorGuid,\r | |
577 | OUT VARIABLE_HEADER **VariablePtr\r | |
578 | );\r | |
579 | \r | |
8a2d4996 | 580 | /**\r |
581 | \r | |
582 | This code Finds the Next available variable.\r | |
583 | \r | |
efb01a10 SZ |
584 | Caution: This function may receive untrusted input.\r |
585 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
586 | \r | |
6f817f9b SZ |
587 | @param VariableNameSize The size of the VariableName buffer. The size must be large\r |
588 | enough to fit input string supplied in VariableName buffer.\r | |
8a2d4996 | 589 | @param VariableName Pointer to variable name.\r |
590 | @param VendorGuid Variable Vendor Guid.\r | |
591 | \r | |
6f817f9b SZ |
592 | @retval EFI_SUCCESS The function completed successfully.\r |
593 | @retval EFI_NOT_FOUND The next variable was not found.\r | |
594 | @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.\r | |
595 | VariableNameSize has been updated with the size needed to complete the request.\r | |
596 | @retval EFI_INVALID_PARAMETER VariableNameSize is NULL.\r | |
597 | @retval EFI_INVALID_PARAMETER VariableName is NULL.\r | |
598 | @retval EFI_INVALID_PARAMETER VendorGuid is NULL.\r | |
599 | @retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and\r | |
600 | GUID of an existing variable.\r | |
601 | @retval EFI_INVALID_PARAMETER Null-terminator is not found in the first VariableNameSize bytes of\r | |
602 | the input VariableName buffer.\r | |
8a2d4996 | 603 | \r |
604 | **/\r | |
605 | EFI_STATUS\r | |
606 | EFIAPI\r | |
607 | VariableServiceGetNextVariableName (\r | |
608 | IN OUT UINTN *VariableNameSize,\r | |
609 | IN OUT CHAR16 *VariableName,\r | |
610 | IN OUT EFI_GUID *VendorGuid\r | |
611 | );\r | |
612 | \r | |
613 | /**\r | |
614 | \r | |
615 | This code sets variable in storage blocks (Volatile or Non-Volatile).\r | |
616 | \r | |
efb01a10 SZ |
617 | Caution: This function may receive untrusted input.\r |
618 | This function may be invoked in SMM mode, and datasize and data are external input.\r | |
619 | This function will do basic validation, before parse the data.\r | |
fa0737a8 SZ |
620 | This function will parse the authentication carefully to avoid security issues, like\r |
621 | buffer overflow, integer overflow.\r | |
622 | This function will check attribute carefully to avoid authentication bypass.\r | |
efb01a10 | 623 | \r |
8a2d4996 | 624 | @param VariableName Name of Variable to be found.\r |
625 | @param VendorGuid Variable vendor GUID.\r | |
626 | @param Attributes Attribute value of the variable found\r | |
627 | @param DataSize Size of Data found. If size is less than the\r | |
628 | data, this value contains the required size.\r | |
629 | @param Data Data pointer.\r | |
630 | \r | |
631 | @return EFI_INVALID_PARAMETER Invalid parameter.\r | |
632 | @return EFI_SUCCESS Set successfully.\r | |
633 | @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r | |
634 | @return EFI_NOT_FOUND Not found.\r | |
635 | @return EFI_WRITE_PROTECTED Variable is read-only.\r | |
636 | \r | |
637 | **/\r | |
638 | EFI_STATUS\r | |
639 | EFIAPI\r | |
640 | VariableServiceSetVariable (\r | |
641 | IN CHAR16 *VariableName,\r | |
642 | IN EFI_GUID *VendorGuid,\r | |
643 | IN UINT32 Attributes,\r | |
644 | IN UINTN DataSize,\r | |
645 | IN VOID *Data\r | |
646 | );\r | |
647 | \r | |
b2bd493e SZ |
648 | /**\r |
649 | \r | |
650 | This code returns information about the EFI variables.\r | |
651 | \r | |
efb01a10 SZ |
652 | Caution: This function may receive untrusted input.\r |
653 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
654 | \r | |
b2bd493e SZ |
655 | @param Attributes Attributes bitmask to specify the type of variables\r |
656 | on which to return information.\r | |
657 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
658 | for the EFI variables associated with the attributes specified.\r | |
659 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
660 | for EFI variables associated with the attributes specified.\r | |
661 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
662 | associated with the attributes specified.\r | |
663 | \r | |
664 | @return EFI_SUCCESS Query successfully.\r | |
665 | \r | |
666 | **/\r | |
667 | EFI_STATUS\r | |
668 | EFIAPI\r | |
669 | VariableServiceQueryVariableInfoInternal (\r | |
670 | IN UINT32 Attributes,\r | |
671 | OUT UINT64 *MaximumVariableStorageSize,\r | |
672 | OUT UINT64 *RemainingVariableStorageSize,\r | |
673 | OUT UINT64 *MaximumVariableSize\r | |
674 | );\r | |
675 | \r | |
8a2d4996 | 676 | /**\r |
677 | \r | |
678 | This code returns information about the EFI variables.\r | |
679 | \r | |
efb01a10 SZ |
680 | Caution: This function may receive untrusted input.\r |
681 | This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r | |
682 | \r | |
8a2d4996 | 683 | @param Attributes Attributes bitmask to specify the type of variables\r |
684 | on which to return information.\r | |
685 | @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r | |
686 | for the EFI variables associated with the attributes specified.\r | |
687 | @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r | |
688 | for EFI variables associated with the attributes specified.\r | |
689 | @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r | |
690 | associated with the attributes specified.\r | |
691 | \r | |
692 | @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r | |
693 | @return EFI_SUCCESS Query successfully.\r | |
694 | @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r | |
695 | \r | |
696 | **/\r | |
697 | EFI_STATUS\r | |
698 | EFIAPI\r | |
699 | VariableServiceQueryVariableInfo (\r | |
700 | IN UINT32 Attributes,\r | |
701 | OUT UINT64 *MaximumVariableStorageSize,\r | |
702 | OUT UINT64 *RemainingVariableStorageSize,\r | |
703 | OUT UINT64 *MaximumVariableSize\r | |
fa0737a8 | 704 | );\r |
ff843847 RN |
705 | \r |
706 | /**\r | |
707 | Mark a variable that will become read-only after leaving the DXE phase of execution.\r | |
708 | \r | |
709 | @param[in] This The VARIABLE_LOCK_PROTOCOL instance.\r | |
710 | @param[in] VariableName A pointer to the variable name that will be made read-only subsequently.\r | |
711 | @param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.\r | |
712 | \r | |
713 | @retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked\r | |
714 | as pending to be read-only.\r | |
715 | @retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.\r | |
716 | Or VariableName is an empty string.\r | |
717 | @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r | |
718 | already been signaled.\r | |
719 | @retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.\r | |
720 | **/\r | |
721 | EFI_STATUS\r | |
722 | EFIAPI\r | |
723 | VariableLockRequestToLock (\r | |
724 | IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,\r | |
725 | IN CHAR16 *VariableName,\r | |
726 | IN EFI_GUID *VendorGuid\r | |
727 | );\r | |
728 | \r | |
efb01a10 SZ |
729 | /**\r |
730 | Register SetVariable check handler.\r | |
731 | \r | |
732 | @param[in] Handler Pointer to check handler.\r | |
733 | \r | |
734 | @retval EFI_SUCCESS The SetVariable check handler was registered successfully.\r | |
735 | @retval EFI_INVALID_PARAMETER Handler is NULL.\r | |
736 | @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r | |
737 | already been signaled.\r | |
738 | @retval EFI_OUT_OF_RESOURCES There is not enough resource for the SetVariable check handler register request.\r | |
739 | @retval EFI_UNSUPPORTED This interface is not implemented.\r | |
740 | For example, it is unsupported in VarCheck protocol if both VarCheck and SmmVarCheck protocols are present.\r | |
741 | \r | |
742 | **/\r | |
743 | EFI_STATUS\r | |
744 | EFIAPI\r | |
745 | VarCheckRegisterSetVariableCheckHandler (\r | |
746 | IN VAR_CHECK_SET_VARIABLE_CHECK_HANDLER Handler\r | |
747 | );\r | |
748 | \r | |
4edb1866 | 749 | /**\r |
fa0737a8 | 750 | Variable property set.\r |
4edb1866 | 751 | \r |
fa0737a8 SZ |
752 | @param[in] Name Pointer to the variable name.\r |
753 | @param[in] Guid Pointer to the vendor GUID.\r | |
754 | @param[in] VariableProperty Pointer to the input variable property.\r | |
4edb1866 | 755 | \r |
fa0737a8 SZ |
756 | @retval EFI_SUCCESS The property of variable specified by the Name and Guid was set successfully.\r |
757 | @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string,\r | |
758 | or the fields of VariableProperty are not valid.\r | |
759 | @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r | |
760 | already been signaled.\r | |
761 | @retval EFI_OUT_OF_RESOURCES There is not enough resource for the variable property set request.\r | |
4edb1866 SZ |
762 | \r |
763 | **/\r | |
764 | EFI_STATUS\r | |
765 | EFIAPI\r | |
fa0737a8 | 766 | VarCheckVariablePropertySet (\r |
4edb1866 SZ |
767 | IN CHAR16 *Name,\r |
768 | IN EFI_GUID *Guid,\r | |
fa0737a8 | 769 | IN VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r |
4edb1866 SZ |
770 | );\r |
771 | \r | |
efb01a10 SZ |
772 | /**\r |
773 | Variable property get.\r | |
774 | \r | |
775 | @param[in] Name Pointer to the variable name.\r | |
776 | @param[in] Guid Pointer to the vendor GUID.\r | |
777 | @param[out] VariableProperty Pointer to the output variable property.\r | |
778 | \r | |
779 | @retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.\r | |
780 | @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string.\r | |
781 | @retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.\r | |
782 | \r | |
783 | **/\r | |
784 | EFI_STATUS\r | |
785 | EFIAPI\r | |
786 | VarCheckVariablePropertyGet (\r | |
787 | IN CHAR16 *Name,\r | |
788 | IN EFI_GUID *Guid,\r | |
789 | OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r | |
790 | );\r | |
791 | \r | |
4edb1866 SZ |
792 | /**\r |
793 | Initialize variable quota.\r | |
794 | \r | |
795 | **/\r | |
796 | VOID\r | |
797 | InitializeVariableQuota (\r | |
798 | VOID\r | |
799 | );\r | |
800 | \r | |
5f0871e3 SZ |
801 | extern VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r |
802 | extern EFI_FIRMWARE_VOLUME_HEADER *mNvFvHeaderCache;\r | |
803 | extern VARIABLE_STORE_HEADER *mNvVariableCache;\r | |
804 | extern VARIABLE_INFO_ENTRY *gVariableInfo;\r | |
805 | extern BOOLEAN mEndOfDxe;\r | |
806 | extern VAR_CHECK_REQUEST_SOURCE mRequestSource;\r | |
807 | \r | |
808 | extern AUTH_VAR_LIB_CONTEXT_OUT mAuthContextOut;\r | |
fa0737a8 SZ |
809 | \r |
810 | /**\r | |
811 | Finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
812 | \r | |
813 | This code finds variable in storage blocks of volatile and non-volatile storage areas.\r | |
814 | If VariableName is an empty string, then we just return the first\r | |
815 | qualified variable without comparing VariableName and VendorGuid.\r | |
816 | \r | |
817 | @param[in] VariableName Name of the variable to be found.\r | |
818 | @param[in] VendorGuid Variable vendor GUID to be found.\r | |
819 | @param[out] AuthVariableInfo Pointer to AUTH_VARIABLE_INFO structure for\r | |
820 | output of the variable found.\r | |
821 | \r | |
822 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string,\r | |
823 | while VendorGuid is NULL.\r | |
824 | @retval EFI_SUCCESS Variable successfully found.\r | |
825 | @retval EFI_NOT_FOUND Variable not found\r | |
826 | \r | |
827 | **/\r | |
828 | EFI_STATUS\r | |
829 | EFIAPI\r | |
830 | VariableExLibFindVariable (\r | |
831 | IN CHAR16 *VariableName,\r | |
832 | IN EFI_GUID *VendorGuid,\r | |
833 | OUT AUTH_VARIABLE_INFO *AuthVariableInfo\r | |
834 | );\r | |
835 | \r | |
836 | /**\r | |
837 | Finds next variable in storage blocks of volatile and non-volatile storage areas.\r | |
838 | \r | |
839 | This code finds next variable in storage blocks of volatile and non-volatile storage areas.\r | |
840 | If VariableName is an empty string, then we just return the first\r | |
841 | qualified variable without comparing VariableName and VendorGuid.\r | |
842 | \r | |
843 | @param[in] VariableName Name of the variable to be found.\r | |
844 | @param[in] VendorGuid Variable vendor GUID to be found.\r | |
845 | @param[out] AuthVariableInfo Pointer to AUTH_VARIABLE_INFO structure for\r | |
846 | output of the next variable.\r | |
847 | \r | |
848 | @retval EFI_INVALID_PARAMETER If VariableName is not an empty string,\r | |
849 | while VendorGuid is NULL.\r | |
850 | @retval EFI_SUCCESS Variable successfully found.\r | |
851 | @retval EFI_NOT_FOUND Variable not found\r | |
852 | \r | |
853 | **/\r | |
854 | EFI_STATUS\r | |
855 | EFIAPI\r | |
856 | VariableExLibFindNextVariable (\r | |
857 | IN CHAR16 *VariableName,\r | |
858 | IN EFI_GUID *VendorGuid,\r | |
859 | OUT AUTH_VARIABLE_INFO *AuthVariableInfo\r | |
860 | );\r | |
861 | \r | |
862 | /**\r | |
863 | Update the variable region with Variable information.\r | |
864 | \r | |
865 | @param[in] AuthVariableInfo Pointer AUTH_VARIABLE_INFO structure for\r | |
866 | input of the variable.\r | |
867 | \r | |
868 | @retval EFI_SUCCESS The update operation is success.\r | |
869 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
870 | @retval EFI_WRITE_PROTECTED Variable is write-protected.\r | |
871 | @retval EFI_OUT_OF_RESOURCES There is not enough resource.\r | |
872 | \r | |
873 | **/\r | |
874 | EFI_STATUS\r | |
875 | EFIAPI\r | |
876 | VariableExLibUpdateVariable (\r | |
877 | IN AUTH_VARIABLE_INFO *AuthVariableInfo\r | |
878 | );\r | |
879 | \r | |
880 | /**\r | |
881 | Get scratch buffer.\r | |
882 | \r | |
883 | @param[in, out] ScratchBufferSize Scratch buffer size. If input size is greater than\r | |
884 | the maximum supported buffer size, this value contains\r | |
885 | the maximum supported buffer size as output.\r | |
886 | @param[out] ScratchBuffer Pointer to scratch buffer address.\r | |
887 | \r | |
888 | @retval EFI_SUCCESS Get scratch buffer successfully.\r | |
889 | @retval EFI_UNSUPPORTED If input size is greater than the maximum supported buffer size.\r | |
890 | \r | |
891 | **/\r | |
892 | EFI_STATUS\r | |
893 | EFIAPI\r | |
894 | VariableExLibGetScratchBuffer (\r | |
895 | IN OUT UINTN *ScratchBufferSize,\r | |
896 | OUT VOID **ScratchBuffer\r | |
897 | );\r | |
898 | \r | |
899 | /**\r | |
900 | This function is to check if the remaining variable space is enough to set\r | |
901 | all Variables from argument list successfully. The purpose of the check\r | |
902 | is to keep the consistency of the Variables to be in variable storage.\r | |
903 | \r | |
904 | Note: Variables are assumed to be in same storage.\r | |
905 | The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r | |
906 | so follow the argument sequence to check the Variables.\r | |
907 | \r | |
908 | @param[in] Attributes Variable attributes for Variable entries.\r | |
909 | @param ... The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r | |
910 | A NULL terminates the list. The VariableSize of\r | |
911 | VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r | |
912 | It will be changed to variable total size as output.\r | |
913 | \r | |
914 | @retval TRUE Have enough variable space to set the Variables successfully.\r | |
915 | @retval FALSE No enough variable space to set the Variables successfully.\r | |
916 | \r | |
917 | **/\r | |
918 | BOOLEAN\r | |
919 | EFIAPI\r | |
920 | VariableExLibCheckRemainingSpaceForConsistency (\r | |
921 | IN UINT32 Attributes,\r | |
922 | ...\r | |
923 | );\r | |
924 | \r | |
925 | /**\r | |
926 | Return TRUE if at OS runtime.\r | |
927 | \r | |
928 | @retval TRUE If at OS runtime.\r | |
929 | @retval FALSE If at boot time.\r | |
930 | \r | |
931 | **/\r | |
932 | BOOLEAN\r | |
933 | EFIAPI\r | |
934 | VariableExLibAtRuntime (\r | |
935 | VOID\r | |
936 | );\r | |
937 | \r | |
8d3a5c82 | 938 | #endif\r |