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bf231ea6 A |
1 | /** @file\r |
2 | UEFI Runtime Library implementation for non IPF processor types.\r | |
ebcc8fb7 | 3 | \r |
bf231ea6 A |
4 | This library hides the global variable for the EFI Runtime Services so the\r |
5 | caller does not need to deal with the possiblitly of being called from an\r | |
6 | OS virtual address space. All pointer values are different for a virtual \r | |
7 | mapping than from the normal physical mapping at boot services time.\r | |
ebcc8fb7 | 8 | \r |
bf231ea6 A |
9 | Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r |
10 | All rights reserved. This program and the accompanying materials \r | |
11 | are licensed and made available under the terms and conditions of the BSD License \r | |
12 | which accompanies this distribution. The full text of the license may be found at \r | |
13 | http://opensource.org/licenses/bsd-license.php \r | |
ebcc8fb7 | 14 | \r |
bf231ea6 A |
15 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
16 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
17 | \r | |
18 | **/\r | |
ebcc8fb7 | 19 | \r |
20 | #include <PiDxe.h>\r | |
ebcc8fb7 | 21 | \r |
22 | #include <RuntimeLibInternal.h>\r | |
23 | \r | |
bf231ea6 A |
24 | \r |
25 | /**\r | |
26 | Resets the entire platform.\r | |
27 | \r | |
28 | @param ResetType The type of reset to perform.\r | |
29 | @param ResetStatus The status code for reset.\r | |
30 | @param DataSize The size in bytes of reset data.\r | |
31 | @param ResetData Pointer to data buffer that includes\r | |
32 | Null-Terminated Unicode string.\r | |
33 | \r | |
34 | **/\r | |
ebcc8fb7 | 35 | VOID\r |
36 | EFIAPI\r | |
37 | EfiResetSystem (\r | |
38 | IN EFI_RESET_TYPE ResetType,\r | |
39 | IN EFI_STATUS ResetStatus,\r | |
40 | IN UINTN DataSize,\r | |
41 | IN CHAR16 *ResetData\r | |
42 | )\r | |
bf231ea6 A |
43 | {\r |
44 | mRT->ResetSystem (ResetType, ResetStatus, DataSize, ResetData);\r | |
45 | }\r | |
ebcc8fb7 | 46 | \r |
ebcc8fb7 | 47 | \r |
bf231ea6 A |
48 | /**\r |
49 | Return current time and date information, and time-keeping\r | |
50 | capabilities of hardware platform.\r | |
ebcc8fb7 | 51 | \r |
bf231ea6 A |
52 | @param Time A pointer to storage to receive a snapshot of the current time.\r |
53 | @param Capabilities An optional pointer to a buffer to receive the real time clock device's\r | |
54 | capabilities.\r | |
ebcc8fb7 | 55 | \r |
bf231ea6 A |
56 | @retval EFI_SUCCESS Success to execute the function.\r |
57 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 58 | \r |
bf231ea6 | 59 | **/\r |
ebcc8fb7 | 60 | EFI_STATUS\r |
61 | EFIAPI\r | |
62 | EfiGetTime (\r | |
63 | OUT EFI_TIME *Time,\r | |
64 | OUT EFI_TIME_CAPABILITIES *Capabilities\r | |
65 | )\r | |
bf231ea6 A |
66 | {\r |
67 | return mRT->GetTime (Time, Capabilities);\r | |
68 | }\r | |
ebcc8fb7 | 69 | \r |
ebcc8fb7 | 70 | \r |
bf231ea6 A |
71 | /**\r |
72 | Set current time and date information.\r | |
ebcc8fb7 | 73 | \r |
bf231ea6 | 74 | @param Time A pointer to cache of time setting.\r |
ebcc8fb7 | 75 | \r |
bf231ea6 A |
76 | @retval EFI_SUCCESS Success to execute the function.\r |
77 | @retval !EFI_SUCCESS Failed to execute the function.\r | |
ebcc8fb7 | 78 | \r |
bf231ea6 | 79 | **/\r |
ebcc8fb7 | 80 | EFI_STATUS\r |
81 | EFIAPI\r | |
82 | EfiSetTime (\r | |
83 | IN EFI_TIME *Time\r | |
84 | )\r | |
bf231ea6 A |
85 | {\r |
86 | return mRT->SetTime (Time);\r | |
87 | }\r | |
ebcc8fb7 | 88 | \r |
ebcc8fb7 | 89 | \r |
bf231ea6 A |
90 | /**\r |
91 | Return current wakeup alarm clock setting.\r | |
ebcc8fb7 | 92 | \r |
bf231ea6 A |
93 | @param Enabled Indicate if the alarm clock is enabled or disabled.\r |
94 | @param Pending Indicate if the alarm signal is pending and requires acknowledgement.\r | |
95 | @param Time Current alarm clock setting.\r | |
ebcc8fb7 | 96 | \r |
bf231ea6 A |
97 | @retval EFI_SUCCESS Success to execute the function.\r |
98 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 99 | \r |
bf231ea6 | 100 | **/\r |
ebcc8fb7 | 101 | EFI_STATUS\r |
102 | EFIAPI\r | |
103 | EfiGetWakeupTime (\r | |
104 | OUT BOOLEAN *Enabled,\r | |
105 | OUT BOOLEAN *Pending,\r | |
106 | OUT EFI_TIME *Time\r | |
107 | )\r | |
bf231ea6 A |
108 | {\r |
109 | return mRT->GetWakeupTime (Enabled, Pending, Time);\r | |
110 | }\r | |
ebcc8fb7 | 111 | \r |
ebcc8fb7 | 112 | \r |
ebcc8fb7 | 113 | \r |
bf231ea6 A |
114 | /**\r |
115 | Set current wakeup alarm clock.\r | |
ebcc8fb7 | 116 | \r |
bf231ea6 A |
117 | @param Enable Enable or disable current alarm clock..\r |
118 | @param Time Point to alarm clock setting.\r | |
ebcc8fb7 | 119 | \r |
bf231ea6 A |
120 | @retval EFI_SUCCESS Success to execute the function.\r |
121 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 122 | \r |
bf231ea6 | 123 | **/\r |
ebcc8fb7 | 124 | EFI_STATUS\r |
125 | EFIAPI\r | |
126 | EfiSetWakeupTime (\r | |
127 | IN BOOLEAN Enable,\r | |
128 | IN EFI_TIME *Time\r | |
129 | )\r | |
ebcc8fb7 | 130 | {\r |
131 | return mRT->SetWakeupTime (Enable, Time);\r | |
132 | }\r | |
133 | \r | |
134 | \r | |
bf231ea6 A |
135 | /**\r |
136 | Return value of variable.\r | |
137 | \r | |
138 | @param VariableName the name of the vendor's variable, it's a\r | |
139 | Null-Terminated Unicode String\r | |
140 | @param VendorGuid Unify identifier for vendor.\r | |
141 | @param Attributes Point to memory location to return the attributes of variable. If the point\r | |
142 | is NULL, the parameter would be ignored.\r | |
143 | @param DataSize As input, point to the maxinum size of return Data-Buffer.\r | |
144 | As output, point to the actual size of the returned Data-Buffer.\r | |
145 | @param Data Point to return Data-Buffer.\r | |
ebcc8fb7 | 146 | \r |
bf231ea6 A |
147 | @retval EFI_SUCCESS Success to execute the function.\r |
148 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 149 | \r |
bf231ea6 | 150 | **/\r |
ebcc8fb7 | 151 | EFI_STATUS\r |
152 | EFIAPI\r | |
153 | EfiGetVariable (\r | |
154 | IN CHAR16 *VariableName,\r | |
155 | IN EFI_GUID * VendorGuid,\r | |
156 | OUT UINT32 *Attributes OPTIONAL,\r | |
157 | IN OUT UINTN *DataSize,\r | |
158 | OUT VOID *Data\r | |
159 | )\r | |
bf231ea6 A |
160 | {\r |
161 | return mRT->GetVariable (VariableName, VendorGuid, Attributes, DataSize, Data);\r | |
162 | }\r | |
ebcc8fb7 | 163 | \r |
ebcc8fb7 | 164 | \r |
bf231ea6 A |
165 | /**\r |
166 | Enumerates variable's name.\r | |
ebcc8fb7 | 167 | \r |
bf231ea6 A |
168 | @param VariableNameSize As input, point to maxinum size of variable name.\r |
169 | As output, point to actual size of varaible name.\r | |
170 | @param VariableName As input, supplies the last VariableName that was returned by\r | |
171 | GetNextVariableName().\r | |
172 | As output, returns the name of variable. The name\r | |
173 | string is Null-Terminated Unicode string.\r | |
174 | @param VendorGuid As input, supplies the last VendorGuid that was returned by\r | |
175 | GetNextVriableName().\r | |
176 | As output, returns the VendorGuid of the current variable.\r | |
ebcc8fb7 | 177 | \r |
bf231ea6 A |
178 | @retval EFI_SUCCESS Success to execute the function.\r |
179 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 180 | \r |
bf231ea6 | 181 | **/\r |
ebcc8fb7 | 182 | EFI_STATUS\r |
183 | EFIAPI\r | |
184 | EfiGetNextVariableName (\r | |
185 | IN OUT UINTN *VariableNameSize,\r | |
186 | IN OUT CHAR16 *VariableName,\r | |
187 | IN OUT EFI_GUID *VendorGuid\r | |
188 | )\r | |
bf231ea6 A |
189 | {\r |
190 | return mRT->GetNextVariableName (VariableNameSize, VariableName, VendorGuid);\r | |
191 | }\r | |
ebcc8fb7 | 192 | \r |
ebcc8fb7 | 193 | \r |
bf231ea6 A |
194 | /**\r |
195 | Sets value of variable.\r | |
ebcc8fb7 | 196 | \r |
bf231ea6 A |
197 | @param VariableName the name of the vendor's variable, it's a\r |
198 | Null-Terminated Unicode String\r | |
199 | @param VendorGuid Unify identifier for vendor.\r | |
200 | @param Attributes Point to memory location to return the attributes of variable. If the point\r | |
201 | is NULL, the parameter would be ignored.\r | |
202 | @param DataSize The size in bytes of Data-Buffer.\r | |
203 | @param Data Point to the content of the variable.\r | |
ebcc8fb7 | 204 | \r |
bf231ea6 A |
205 | @retval EFI_SUCCESS Success to execute the function.\r |
206 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 207 | \r |
bf231ea6 | 208 | **/\r |
ebcc8fb7 | 209 | EFI_STATUS\r |
210 | EFIAPI\r | |
211 | EfiSetVariable (\r | |
212 | IN CHAR16 *VariableName,\r | |
213 | IN EFI_GUID *VendorGuid,\r | |
214 | IN UINT32 Attributes,\r | |
215 | IN UINTN DataSize,\r | |
216 | IN VOID *Data\r | |
217 | )\r | |
bf231ea6 A |
218 | {\r |
219 | return mRT->SetVariable (VariableName, VendorGuid, Attributes, DataSize, Data);\r | |
220 | }\r | |
ebcc8fb7 | 221 | \r |
ebcc8fb7 | 222 | \r |
bf231ea6 A |
223 | /**\r |
224 | Returns the next high 32 bits of platform's monotonic counter.\r | |
ebcc8fb7 | 225 | \r |
bf231ea6 | 226 | @param HighCount Pointer to returned value.\r |
ebcc8fb7 | 227 | \r |
bf231ea6 A |
228 | @retval EFI_SUCCESS Success to execute the function.\r |
229 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 230 | \r |
bf231ea6 | 231 | **/\r |
ebcc8fb7 | 232 | EFI_STATUS\r |
233 | EFIAPI\r | |
234 | EfiGetNextHighMonotonicCount (\r | |
235 | OUT UINT32 *HighCount\r | |
236 | )\r | |
bf231ea6 A |
237 | {\r |
238 | return mRT->GetNextHighMonotonicCount (HighCount);\r | |
239 | }\r | |
ebcc8fb7 | 240 | \r |
ebcc8fb7 | 241 | \r |
bf231ea6 A |
242 | /**\r |
243 | Determines the new virtual address that is to be used on subsequent memory accesses.\r | |
ebcc8fb7 | 244 | \r |
bf231ea6 A |
245 | @param DebugDisposition Supplies type information for the pointer being converted.\r |
246 | @param Address The pointer to a pointer that is to be fixed to be the\r | |
247 | value needed for the new virtual address mapping being\r | |
248 | applied.\r | |
ebcc8fb7 | 249 | \r |
bf231ea6 A |
250 | @retval EFI_SUCCESS Success to execute the function.\r |
251 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 252 | \r |
bf231ea6 | 253 | **/\r |
ebcc8fb7 | 254 | EFI_STATUS\r |
255 | EFIAPI\r | |
256 | EfiConvertPointer (\r | |
257 | IN UINTN DebugDisposition,\r | |
258 | IN OUT VOID **Address\r | |
259 | )\r | |
bf231ea6 | 260 | {\r |
ad9e507a | 261 | return gRT->ConvertPointer (DebugDisposition, Address);\r |
bf231ea6 | 262 | }\r |
ebcc8fb7 | 263 | \r |
ebcc8fb7 | 264 | \r |
bf231ea6 A |
265 | /**\r |
266 | Conver the standard Lib double linked list to a virtual mapping.\r | |
ebcc8fb7 | 267 | \r |
bf231ea6 A |
268 | @param DebugDisposition Supplies type information for the pointer being converted.\r |
269 | @param ListHead Head of linked list to convert.\r | |
ebcc8fb7 | 270 | \r |
bf231ea6 A |
271 | @retval EFI_SUCCESS Success to execute the function.\r |
272 | @retval !EFI_SUCCESS Failed to e3xecute the function.\r | |
ebcc8fb7 | 273 | \r |
bf231ea6 | 274 | **/\r |
ebcc8fb7 | 275 | EFI_STATUS\r |
276 | EFIAPI\r | |
277 | EfiConvertList (\r | |
278 | IN UINTN DebugDisposition,\r | |
279 | IN OUT LIST_ENTRY *ListHead\r | |
280 | )\r | |
ebcc8fb7 | 281 | {\r |
282 | LIST_ENTRY *Link;\r | |
283 | LIST_ENTRY *NextLink;\r | |
284 | \r | |
285 | //\r | |
286 | // Convert all the ForwardLink & BackLink pointers in the list\r | |
287 | //\r | |
288 | Link = ListHead;\r | |
289 | do {\r | |
290 | NextLink = Link->ForwardLink;\r | |
291 | \r | |
292 | EfiConvertPointer (\r | |
293 | Link->ForwardLink == ListHead ? DebugDisposition : 0,\r | |
294 | (VOID **) &Link->ForwardLink\r | |
295 | );\r | |
296 | \r | |
297 | EfiConvertPointer (\r | |
298 | Link->BackLink == ListHead ? DebugDisposition : 0,\r | |
299 | (VOID **) &Link->BackLink\r | |
300 | );\r | |
301 | \r | |
302 | Link = NextLink;\r | |
303 | } while (Link != ListHead);\r | |
304 | return EFI_SUCCESS;\r | |
305 | }\r | |
306 | \r | |
307 | \r | |
308 | /**\r | |
309 | Change the runtime addressing mode of EFI firmware from physical to virtual.\r | |
310 | \r | |
311 | @param MemoryMapSize The size in bytes of VirtualMap.\r | |
312 | @param DescriptorSize The size in bytes of an entry in the VirtualMap.\r | |
313 | @param DescriptorVersion The version of the structure entries in VirtualMap.\r | |
314 | @param VirtualMap An array of memory descriptors which contain new virtual\r | |
315 | address mapping information for all runtime ranges. Type\r | |
316 | EFI_MEMORY_DESCRIPTOR is defined in the\r | |
317 | GetMemoryMap() function description.\r | |
318 | \r | |
319 | @retval EFI_SUCCESS The virtual address map has been applied.\r | |
320 | @retval EFI_UNSUPPORTED EFI firmware is not at runtime, or the EFI firmware is already in\r | |
321 | virtual address mapped mode.\r | |
322 | @retval EFI_INVALID_PARAMETER DescriptorSize or DescriptorVersion is\r | |
323 | invalid.\r | |
324 | @retval EFI_NO_MAPPING A virtual address was not supplied for a range in the memory\r | |
325 | map that requires a mapping.\r | |
326 | @retval EFI_NOT_FOUND A virtual address was supplied for an address that is not found\r | |
327 | in the memory map.\r | |
328 | **/\r | |
329 | EFI_STATUS\r | |
330 | EFIAPI\r | |
331 | EfiSetVirtualAddressMap (\r | |
332 | IN UINTN MemoryMapSize,\r | |
333 | IN UINTN DescriptorSize,\r | |
334 | IN UINT32 DescriptorVersion,\r | |
335 | IN CONST EFI_MEMORY_DESCRIPTOR *VirtualMap\r | |
336 | )\r | |
337 | {\r | |
f80b0830 | 338 | return mRT->SetVirtualAddressMap (\r |
ebcc8fb7 | 339 | MemoryMapSize,\r |
340 | DescriptorSize,\r | |
341 | DescriptorVersion,\r | |
342 | (EFI_MEMORY_DESCRIPTOR *) VirtualMap\r | |
343 | );\r | |
344 | }\r | |
345 | \r | |
346 | \r | |
bf231ea6 A |
347 | /**\r |
348 | Passes capsules to the firmware with both virtual and physical mapping.\r | |
349 | Depending on the intended consumption, the firmware may\r | |
350 | process the capsule immediately. If the payload should persist across a\r | |
351 | system reset, the reset value returned from EFI_QueryCapsuleCapabilities must\r | |
352 | be passed into ResetSystem() and will cause the capsule to be processed by\r | |
353 | the firmware as part of the reset process.\r | |
354 | \r | |
355 | @param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules\r | |
356 | being passed into update capsule. Each capsules is assumed to\r | |
357 | stored in contiguous virtual memory. The capsules in the\r | |
358 | CapsuleHeaderArray must be the same capsules as the\r | |
359 | ScatterGatherList. The CapsuleHeaderArray must\r | |
360 | have the capsules in the same order as the ScatterGatherList.\r | |
361 | @param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in\r | |
362 | CaspuleHeaderArray.\r | |
363 | @param ScatterGatherList Physical pointer to a set of\r | |
364 | EFI_CAPSULE_BLOCK_DESCRIPTOR that describes the\r | |
365 | location in physical memory of a set of capsules. See Related\r | |
366 | Definitions for an explanation of how more than one capsule is\r | |
367 | passed via this interface. The capsules in the\r | |
368 | ScatterGatherList must be in the same order as the\r | |
369 | CapsuleHeaderArray. This parameter is only referenced if\r | |
370 | the capsules are defined to persist across system reset.\r | |
371 | \r | |
372 | @retval EFI_SUCCESS Valid capsule was passed. I Valid capsule was passed. If\r | |
373 | CAPSULE_FLAGS_PERSIT_ACROSS_RESET is not set, the\r | |
374 | capsule has been successfully processed by the firmware.\r | |
375 | @retval EFI_INVALID_PARAMETER CapsuleSize is NULL or ResetTye is NULL.\r | |
376 | @retval EFI_DEVICE_ERROR The capsule update was started, but failed due to a device error.\r | |
377 | \r | |
378 | **/\r | |
ebcc8fb7 | 379 | EFI_STATUS\r |
380 | EFIAPI\r | |
381 | EfiUpdateCapsule (\r | |
b67d6130 | 382 | IN EFI_CAPSULE_HEADER **CapsuleHeaderArray,\r |
383 | IN UINTN CapsuleCount,\r | |
384 | IN EFI_PHYSICAL_ADDRESS ScatterGatherList OPTIONAL\r | |
ebcc8fb7 | 385 | )\r |
386 | {\r | |
387 | return mRT->UpdateCapsule (\r | |
388 | CapsuleHeaderArray,\r | |
389 | CapsuleCount,\r | |
390 | ScatterGatherList\r | |
391 | );\r | |
392 | }\r | |
393 | \r | |
bf231ea6 A |
394 | \r |
395 | /**\r | |
396 | The QueryCapsuleCapabilities() function allows a caller to test to see if a capsule or\r | |
397 | capsules can be updated via UpdateCapsule(). The Flags values in the capsule header and\r | |
398 | size of the entire capsule is checked.\r | |
399 | If the caller needs to query for generic capsule capability a fake EFI_CAPSULE_HEADER can be\r | |
400 | constructed where CapsuleImageSize is equal to HeaderSize that is equal to sizeof\r | |
401 | (EFI_CAPSULE_HEADER). To determine reset requirements,\r | |
402 | CAPSULE_FLAGS_PERSIST_ACROSS_RESET should be set in the Flags field of the\r | |
403 | EFI_CAPSULE_HEADER.\r | |
404 | The firmware must support any capsule that has the\r | |
405 | CAPSULE_FLAGS_PERSIST_ACROSS_RESET flag set in EFI_CAPSULE_HEADER. The\r | |
406 | firmware sets the policy for what capsules are supported that do not have the\r | |
407 | CAPSULE_FLAGS_PERSIST_ACROSS_RESET flag set.\r | |
408 | \r | |
409 | @param CapsuleHeaderArray Virtual pointer to an array of virtual pointers to the capsules\r | |
410 | being passed into update capsule. The capsules are assumed to\r | |
411 | stored in contiguous virtual memory.\r | |
412 | @param CapsuleCount Number of pointers to EFI_CAPSULE_HEADER in\r | |
413 | CaspuleHeaderArray.\r | |
414 | @param MaxiumCapsuleSize On output the maximum size that UpdateCapsule() can\r | |
415 | support as an argument to UpdateCapsule() via\r | |
416 | CapsuleHeaderArray and ScatterGatherList.\r | |
417 | Undefined on input.\r | |
418 | @param ResetType Returns the type of reset required for the capsule update.\r | |
419 | \r | |
420 | @retval EFI_SUCCESS Valid answer returned..\r | |
421 | @retval EFI_INVALID_PARAMETER MaximumCapsuleSize is NULL.\r | |
422 | @retval EFI_UNSUPPORTED The capsule type is not supported on this platform, and\r | |
423 | MaximumCapsuleSize and ResetType are undefined.\r | |
424 | \r | |
425 | **/\r | |
ebcc8fb7 | 426 | EFI_STATUS\r |
427 | EFIAPI\r | |
428 | EfiQueryCapsuleCapabilities (\r | |
b67d6130 | 429 | IN EFI_CAPSULE_HEADER **CapsuleHeaderArray,\r |
430 | IN UINTN CapsuleCount,\r | |
431 | OUT UINT64 *MaximumCapsuleSize,\r | |
432 | OUT EFI_RESET_TYPE *ResetType\r | |
ebcc8fb7 | 433 | )\r |
434 | {\r | |
435 | return mRT->QueryCapsuleCapabilities (\r | |
436 | CapsuleHeaderArray,\r | |
437 | CapsuleCount,\r | |
438 | MaximumCapsuleSize,\r | |
439 | ResetType\r | |
440 | );\r | |
441 | }\r | |
442 | \r | |
443 | \r | |
bf231ea6 A |
444 | /**\r |
445 | The QueryVariableInfo() function allows a caller to obtain the information about the\r | |
446 | maximum size of the storage space available for the EFI variables, the remaining size of the storage\r | |
447 | space available for the EFI variables and the maximum size of each individual EFI variable,\r | |
448 | associated with the attributes specified.\r | |
449 | The returned MaximumVariableStorageSize, RemainingVariableStorageSize,\r | |
450 | MaximumVariableSize information may change immediately after the call based on other\r | |
451 | runtime activities including asynchronous error events. Also, these values associated with different\r | |
452 | attributes are not additive in nature.\r | |
453 | \r | |
454 | @param Attributes Attributes bitmask to specify the type of variables on\r | |
455 | which to return information. Refer to the\r | |
456 | GetVariable() function description.\r | |
457 | @param MaximumVariableStorageSize\r | |
458 | On output the maximum size of the storage space\r | |
459 | available for the EFI variables associated with the\r | |
460 | attributes specified.\r | |
461 | @param RemainingVariableStorageSize\r | |
462 | Returns the remaining size of the storage space\r | |
463 | available for the EFI variables associated with the\r | |
464 | attributes specified..\r | |
465 | @param MaximumVariableSize Returns the maximum size of the individual EFI\r | |
466 | variables associated with the attributes specified.\r | |
467 | \r | |
468 | @retval EFI_SUCCESS Valid answer returned.\r | |
469 | @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r | |
470 | @retval EFI_UNSUPPORTED EFI_UNSUPPORTED The attribute is not supported on this platform, and the\r | |
471 | MaximumVariableStorageSize,\r | |
472 | RemainingVariableStorageSize, MaximumVariableSize\r | |
473 | are undefined.\r | |
474 | **/\r | |
ebcc8fb7 | 475 | EFI_STATUS\r |
476 | EFIAPI\r | |
477 | EfiQueryVariableInfo (\r | |
b67d6130 | 478 | IN UINT32 Attributes,\r |
479 | OUT UINT64 *MaximumVariableStorageSize,\r | |
480 | OUT UINT64 *RemainingVariableStorageSize,\r | |
481 | OUT UINT64 *MaximumVariableSize\r | |
ebcc8fb7 | 482 | )\r |
483 | {\r | |
484 | return mRT->QueryVariableInfo (\r | |
485 | Attributes,\r | |
486 | MaximumVariableStorageSize,\r | |
487 | RemainingVariableStorageSize,\r | |
488 | MaximumVariableSize\r | |
489 | );\r | |
490 | }\r |