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1c837cd5 | 1 | /** @file\r |
e8c758dc HT |
2 | LockBox SMM driver.\r |
3 | \r | |
32177f69 JY |
4 | Caution: This module requires additional review when modified.\r |
5 | This driver will have external input - communicate buffer in SMM mode.\r | |
6 | This external input must be validated carefully to avoid security issue like\r | |
7 | buffer overflow, integer overflow.\r | |
e8c758dc | 8 | \r |
32177f69 JY |
9 | SmmLockBoxHandler(), SmmLockBoxRestore(), SmmLockBoxUpdate(), SmmLockBoxSave()\r |
10 | will receive untrusted input and do basic validation.\r | |
1c837cd5 | 11 | \r |
842b1242 | 12 | Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r |
e8c758dc | 13 | \r |
1c837cd5 | 14 | This program and the accompanying materials\r |
15 | are licensed and made available under the terms and conditions\r | |
16 | of the BSD License which accompanies this distribution. The\r | |
17 | full text of the license may be found at\r | |
18 | http://opensource.org/licenses/bsd-license.php\r | |
19 | \r | |
20 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
21 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
22 | \r | |
23 | **/\r | |
24 | \r | |
25 | #include <PiSmm.h>\r | |
26 | #include <Library/UefiDriverEntryPoint.h>\r | |
27 | #include <Library/UefiBootServicesTableLib.h>\r | |
28 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
29 | #include <Library/SmmServicesTableLib.h>\r | |
30 | #include <Library/BaseLib.h>\r | |
31 | #include <Library/BaseMemoryLib.h>\r | |
32 | #include <Library/DebugLib.h>\r | |
842b1242 | 33 | #include <Library/SmmMemLib.h>\r |
1c837cd5 | 34 | #include <Library/LockBoxLib.h>\r |
842b1242 | 35 | \r |
1c837cd5 | 36 | #include <Protocol/SmmReadyToLock.h>\r |
37 | #include <Protocol/SmmCommunication.h>\r | |
38 | #include <Protocol/SmmAccess2.h>\r | |
39 | #include <Protocol/LockBox.h>\r | |
40 | #include <Guid/SmmLockBox.h>\r | |
41 | \r | |
42 | BOOLEAN mLocked = FALSE;\r | |
43 | \r | |
1c837cd5 | 44 | /**\r |
45 | Dispatch function for SMM lock box save.\r | |
46 | \r | |
32177f69 JY |
47 | Caution: This function may receive untrusted input.\r |
48 | Restore buffer and length are external input, so this function will validate\r | |
49 | it is in SMRAM.\r | |
50 | \r | |
1c837cd5 | 51 | @param LockBoxParameterSave parameter of lock box save \r |
52 | **/\r | |
53 | VOID\r | |
54 | SmmLockBoxSave (\r | |
55 | IN EFI_SMM_LOCK_BOX_PARAMETER_SAVE *LockBoxParameterSave\r | |
56 | )\r | |
57 | {\r | |
58 | EFI_STATUS Status;\r | |
5e5bb2a9 | 59 | EFI_SMM_LOCK_BOX_PARAMETER_SAVE TempLockBoxParameterSave;\r |
1c837cd5 | 60 | \r |
61 | //\r | |
62 | // Sanity check\r | |
63 | //\r | |
64 | if (mLocked) {\r | |
65 | DEBUG ((EFI_D_ERROR, "SmmLockBox Locked!\n"));\r | |
66 | LockBoxParameterSave->Header.ReturnStatus = (UINT64)EFI_ACCESS_DENIED;\r | |
67 | return ;\r | |
68 | }\r | |
69 | \r | |
5e5bb2a9 SZ |
70 | CopyMem (&TempLockBoxParameterSave, LockBoxParameterSave, sizeof (EFI_SMM_LOCK_BOX_PARAMETER_SAVE));\r |
71 | \r | |
32177f69 JY |
72 | //\r |
73 | // Sanity check\r | |
74 | //\r | |
842b1242 | 75 | if (!SmmIsBufferOutsideSmmValid ((UINTN)TempLockBoxParameterSave.Buffer, (UINTN)TempLockBoxParameterSave.Length)) {\r |
9d00d20e | 76 | DEBUG ((EFI_D_ERROR, "SmmLockBox Save address in SMRAM or buffer overflow!\n"));\r |
32177f69 JY |
77 | LockBoxParameterSave->Header.ReturnStatus = (UINT64)EFI_ACCESS_DENIED;\r |
78 | return ;\r | |
79 | }\r | |
80 | \r | |
1c837cd5 | 81 | //\r |
82 | // Save data\r | |
83 | //\r | |
84 | Status = SaveLockBox (\r | |
5e5bb2a9 SZ |
85 | &TempLockBoxParameterSave.Guid,\r |
86 | (VOID *)(UINTN)TempLockBoxParameterSave.Buffer,\r | |
87 | (UINTN)TempLockBoxParameterSave.Length\r | |
1c837cd5 | 88 | );\r |
89 | LockBoxParameterSave->Header.ReturnStatus = (UINT64)Status;\r | |
90 | return ;\r | |
91 | }\r | |
92 | \r | |
93 | /**\r | |
94 | Dispatch function for SMM lock box set attributes.\r | |
95 | \r | |
96 | @param LockBoxParameterSetAttributes parameter of lock box set attributes\r | |
97 | **/\r | |
98 | VOID\r | |
99 | SmmLockBoxSetAttributes (\r | |
100 | IN EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES *LockBoxParameterSetAttributes\r | |
101 | )\r | |
102 | {\r | |
103 | EFI_STATUS Status;\r | |
5e5bb2a9 | 104 | EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES TempLockBoxParameterSetAttributes;\r |
1c837cd5 | 105 | \r |
106 | //\r | |
107 | // Sanity check\r | |
108 | //\r | |
109 | if (mLocked) {\r | |
110 | DEBUG ((EFI_D_ERROR, "SmmLockBox Locked!\n"));\r | |
111 | LockBoxParameterSetAttributes->Header.ReturnStatus = (UINT64)EFI_ACCESS_DENIED;\r | |
112 | return ;\r | |
113 | }\r | |
114 | \r | |
5e5bb2a9 SZ |
115 | CopyMem (&TempLockBoxParameterSetAttributes, LockBoxParameterSetAttributes, sizeof (EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES));\r |
116 | \r | |
1c837cd5 | 117 | //\r |
118 | // Update data\r | |
119 | //\r | |
120 | Status = SetLockBoxAttributes (\r | |
5e5bb2a9 SZ |
121 | &TempLockBoxParameterSetAttributes.Guid,\r |
122 | TempLockBoxParameterSetAttributes.Attributes\r | |
1c837cd5 | 123 | );\r |
124 | LockBoxParameterSetAttributes->Header.ReturnStatus = (UINT64)Status;\r | |
125 | return ;\r | |
126 | }\r | |
127 | \r | |
128 | /**\r | |
129 | Dispatch function for SMM lock box update.\r | |
130 | \r | |
32177f69 JY |
131 | Caution: This function may receive untrusted input.\r |
132 | Restore buffer and length are external input, so this function will validate\r | |
133 | it is in SMRAM.\r | |
134 | \r | |
1c837cd5 | 135 | @param LockBoxParameterUpdate parameter of lock box update \r |
136 | **/\r | |
137 | VOID\r | |
138 | SmmLockBoxUpdate (\r | |
139 | IN EFI_SMM_LOCK_BOX_PARAMETER_UPDATE *LockBoxParameterUpdate\r | |
140 | )\r | |
141 | {\r | |
142 | EFI_STATUS Status;\r | |
5e5bb2a9 | 143 | EFI_SMM_LOCK_BOX_PARAMETER_UPDATE TempLockBoxParameterUpdate;\r |
1c837cd5 | 144 | \r |
145 | //\r | |
146 | // Sanity check\r | |
147 | //\r | |
148 | if (mLocked) {\r | |
149 | DEBUG ((EFI_D_ERROR, "SmmLockBox Locked!\n"));\r | |
150 | LockBoxParameterUpdate->Header.ReturnStatus = (UINT64)EFI_ACCESS_DENIED;\r | |
151 | return ;\r | |
152 | }\r | |
153 | \r | |
5e5bb2a9 SZ |
154 | CopyMem (&TempLockBoxParameterUpdate, LockBoxParameterUpdate, sizeof (EFI_SMM_LOCK_BOX_PARAMETER_UPDATE));\r |
155 | \r | |
32177f69 JY |
156 | //\r |
157 | // Sanity check\r | |
158 | //\r | |
842b1242 | 159 | if (!SmmIsBufferOutsideSmmValid ((UINTN)TempLockBoxParameterUpdate.Buffer, (UINTN)TempLockBoxParameterUpdate.Length)) {\r |
9d00d20e | 160 | DEBUG ((EFI_D_ERROR, "SmmLockBox Update address in SMRAM or buffer overflow!\n"));\r |
32177f69 JY |
161 | LockBoxParameterUpdate->Header.ReturnStatus = (UINT64)EFI_ACCESS_DENIED;\r |
162 | return ;\r | |
163 | }\r | |
164 | \r | |
1c837cd5 | 165 | //\r |
166 | // Update data\r | |
167 | //\r | |
168 | Status = UpdateLockBox (\r | |
5e5bb2a9 SZ |
169 | &TempLockBoxParameterUpdate.Guid,\r |
170 | (UINTN)TempLockBoxParameterUpdate.Offset,\r | |
171 | (VOID *)(UINTN)TempLockBoxParameterUpdate.Buffer,\r | |
172 | (UINTN)TempLockBoxParameterUpdate.Length\r | |
1c837cd5 | 173 | );\r |
174 | LockBoxParameterUpdate->Header.ReturnStatus = (UINT64)Status;\r | |
175 | return ;\r | |
176 | }\r | |
177 | \r | |
178 | /**\r | |
179 | Dispatch function for SMM lock box restore.\r | |
180 | \r | |
32177f69 JY |
181 | Caution: This function may receive untrusted input.\r |
182 | Restore buffer and length are external input, so this function will validate\r | |
183 | it is in SMRAM.\r | |
184 | \r | |
1c837cd5 | 185 | @param LockBoxParameterRestore parameter of lock box restore \r |
186 | **/\r | |
187 | VOID\r | |
188 | SmmLockBoxRestore (\r | |
189 | IN EFI_SMM_LOCK_BOX_PARAMETER_RESTORE *LockBoxParameterRestore\r | |
190 | )\r | |
191 | {\r | |
192 | EFI_STATUS Status;\r | |
5e5bb2a9 SZ |
193 | EFI_SMM_LOCK_BOX_PARAMETER_RESTORE TempLockBoxParameterRestore;\r |
194 | \r | |
195 | CopyMem (&TempLockBoxParameterRestore, LockBoxParameterRestore, sizeof (EFI_SMM_LOCK_BOX_PARAMETER_RESTORE));\r | |
1c837cd5 | 196 | \r |
197 | //\r | |
198 | // Sanity check\r | |
199 | //\r | |
842b1242 | 200 | if (!SmmIsBufferOutsideSmmValid ((UINTN)TempLockBoxParameterRestore.Buffer, (UINTN)TempLockBoxParameterRestore.Length)) {\r |
9d00d20e | 201 | DEBUG ((EFI_D_ERROR, "SmmLockBox Restore address in SMRAM or buffer overflow!\n"));\r |
1c837cd5 | 202 | LockBoxParameterRestore->Header.ReturnStatus = (UINT64)EFI_ACCESS_DENIED;\r |
203 | return ;\r | |
204 | }\r | |
205 | \r | |
206 | //\r | |
207 | // Restore data\r | |
208 | //\r | |
5e5bb2a9 | 209 | if ((TempLockBoxParameterRestore.Length == 0) && (TempLockBoxParameterRestore.Buffer == 0)) {\r |
1476a257 | 210 | Status = RestoreLockBox (\r |
5e5bb2a9 | 211 | &TempLockBoxParameterRestore.Guid,\r |
1476a257 | 212 | NULL,\r |
213 | NULL\r | |
214 | );\r | |
215 | } else {\r | |
216 | Status = RestoreLockBox (\r | |
5e5bb2a9 SZ |
217 | &TempLockBoxParameterRestore.Guid,\r |
218 | (VOID *)(UINTN)TempLockBoxParameterRestore.Buffer,\r | |
219 | (UINTN *)&TempLockBoxParameterRestore.Length\r | |
1476a257 | 220 | );\r |
221 | }\r | |
1c837cd5 | 222 | LockBoxParameterRestore->Header.ReturnStatus = (UINT64)Status;\r |
223 | return ;\r | |
224 | }\r | |
225 | \r | |
226 | /**\r | |
227 | Dispatch function for SMM lock box restore all in place.\r | |
228 | \r | |
229 | @param LockBoxParameterRestoreAllInPlace parameter of lock box restore all in place\r | |
230 | **/\r | |
231 | VOID\r | |
232 | SmmLockBoxRestoreAllInPlace (\r | |
233 | IN EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE *LockBoxParameterRestoreAllInPlace\r | |
234 | )\r | |
235 | {\r | |
236 | EFI_STATUS Status;\r | |
237 | \r | |
238 | Status = RestoreAllLockBoxInPlace ();\r | |
239 | LockBoxParameterRestoreAllInPlace->Header.ReturnStatus = (UINT64)Status;\r | |
240 | return ;\r | |
241 | }\r | |
242 | \r | |
243 | /**\r | |
244 | Dispatch function for a Software SMI handler.\r | |
245 | \r | |
32177f69 JY |
246 | Caution: This function may receive untrusted input.\r |
247 | Communicate buffer and buffer size are external input, so this function will do basic validation.\r | |
248 | \r | |
1c837cd5 | 249 | @param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r |
250 | @param Context Points to an optional handler context which was specified when the\r | |
251 | handler was registered.\r | |
252 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
253 | be conveyed from a non-SMM environment into an SMM environment.\r | |
254 | @param CommBufferSize The size of the CommBuffer.\r | |
255 | \r | |
256 | @retval EFI_SUCCESS Command is handled successfully.\r | |
257 | \r | |
258 | **/\r | |
259 | EFI_STATUS\r | |
260 | EFIAPI\r | |
261 | SmmLockBoxHandler (\r | |
262 | IN EFI_HANDLE DispatchHandle,\r | |
263 | IN CONST VOID *Context OPTIONAL,\r | |
264 | IN OUT VOID *CommBuffer OPTIONAL,\r | |
265 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
266 | )\r | |
267 | {\r | |
268 | EFI_SMM_LOCK_BOX_PARAMETER_HEADER *LockBoxParameterHeader;\r | |
164a9b67 | 269 | UINTN TempCommBufferSize;\r |
1c837cd5 | 270 | \r |
271 | DEBUG ((EFI_D_ERROR, "SmmLockBox SmmLockBoxHandler Enter\n"));\r | |
272 | \r | |
164a9b67 SZ |
273 | //\r |
274 | // If input is invalid, stop processing this SMI\r | |
275 | //\r | |
276 | if (CommBuffer == NULL || CommBufferSize == NULL) {\r | |
277 | return EFI_SUCCESS;\r | |
278 | }\r | |
279 | \r | |
280 | TempCommBufferSize = *CommBufferSize;\r | |
281 | \r | |
32177f69 JY |
282 | //\r |
283 | // Sanity check\r | |
284 | //\r | |
164a9b67 | 285 | if (TempCommBufferSize < sizeof(EFI_SMM_LOCK_BOX_PARAMETER_HEADER)) {\r |
32177f69 JY |
286 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer Size invalid!\n"));\r |
287 | return EFI_SUCCESS;\r | |
288 | }\r | |
842b1242 | 289 | if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) {\r |
9d00d20e | 290 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer in SMRAM or overflow!\n"));\r |
32177f69 JY |
291 | return EFI_SUCCESS;\r |
292 | }\r | |
293 | \r | |
1c837cd5 | 294 | LockBoxParameterHeader = (EFI_SMM_LOCK_BOX_PARAMETER_HEADER *)((UINTN)CommBuffer);\r |
295 | \r | |
296 | LockBoxParameterHeader->ReturnStatus = (UINT64)-1;\r | |
297 | \r | |
298 | DEBUG ((EFI_D_ERROR, "SmmLockBox LockBoxParameterHeader - %x\n", (UINTN)LockBoxParameterHeader));\r | |
299 | \r | |
300 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command - %x\n", (UINTN)LockBoxParameterHeader->Command));\r | |
301 | \r | |
302 | switch (LockBoxParameterHeader->Command) {\r | |
303 | case EFI_SMM_LOCK_BOX_COMMAND_SAVE:\r | |
164a9b67 | 304 | if (TempCommBufferSize < sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SAVE)) {\r |
32177f69 JY |
305 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer Size for SAVE invalid!\n"));\r |
306 | break;\r | |
307 | }\r | |
1c837cd5 | 308 | SmmLockBoxSave ((EFI_SMM_LOCK_BOX_PARAMETER_SAVE *)(UINTN)LockBoxParameterHeader);\r |
309 | break;\r | |
310 | case EFI_SMM_LOCK_BOX_COMMAND_UPDATE:\r | |
164a9b67 | 311 | if (TempCommBufferSize < sizeof(EFI_SMM_LOCK_BOX_PARAMETER_UPDATE)) {\r |
32177f69 JY |
312 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer Size for UPDATE invalid!\n"));\r |
313 | break;\r | |
314 | }\r | |
1c837cd5 | 315 | SmmLockBoxUpdate ((EFI_SMM_LOCK_BOX_PARAMETER_UPDATE *)(UINTN)LockBoxParameterHeader);\r |
316 | break;\r | |
317 | case EFI_SMM_LOCK_BOX_COMMAND_RESTORE:\r | |
164a9b67 | 318 | if (TempCommBufferSize < sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE)) {\r |
32177f69 JY |
319 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer Size for RESTORE invalid!\n"));\r |
320 | break;\r | |
321 | }\r | |
1c837cd5 | 322 | SmmLockBoxRestore ((EFI_SMM_LOCK_BOX_PARAMETER_RESTORE *)(UINTN)LockBoxParameterHeader);\r |
323 | break;\r | |
324 | case EFI_SMM_LOCK_BOX_COMMAND_SET_ATTRIBUTES:\r | |
164a9b67 | 325 | if (TempCommBufferSize < sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES)) {\r |
32177f69 JY |
326 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer Size for SET_ATTRIBUTES invalid!\n"));\r |
327 | break;\r | |
328 | }\r | |
1c837cd5 | 329 | SmmLockBoxSetAttributes ((EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES *)(UINTN)LockBoxParameterHeader);\r |
330 | break;\r | |
331 | case EFI_SMM_LOCK_BOX_COMMAND_RESTORE_ALL_IN_PLACE:\r | |
164a9b67 | 332 | if (TempCommBufferSize < sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE)) {\r |
32177f69 JY |
333 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command Buffer Size for RESTORE_ALL_IN_PLACE invalid!\n"));\r |
334 | break;\r | |
335 | }\r | |
1c837cd5 | 336 | SmmLockBoxRestoreAllInPlace ((EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE *)(UINTN)LockBoxParameterHeader);\r |
337 | break;\r | |
338 | default:\r | |
32177f69 | 339 | DEBUG ((EFI_D_ERROR, "SmmLockBox Command invalid!\n"));\r |
1c837cd5 | 340 | break;\r |
341 | }\r | |
342 | \r | |
343 | LockBoxParameterHeader->Command = (UINT32)-1;\r | |
344 | \r | |
345 | DEBUG ((EFI_D_ERROR, "SmmLockBox SmmLockBoxHandler Exit\n"));\r | |
346 | \r | |
347 | return EFI_SUCCESS;\r | |
348 | }\r | |
349 | \r | |
350 | /**\r | |
351 | Smm Ready To Lock event notification handler.\r | |
352 | \r | |
353 | It sets a flag indicating that SMRAM has been locked.\r | |
354 | \r | |
355 | @param[in] Protocol Points to the protocol's unique identifier.\r | |
356 | @param[in] Interface Points to the interface instance.\r | |
357 | @param[in] Handle The handle on which the interface was installed.\r | |
358 | \r | |
359 | @retval EFI_SUCCESS Notification handler runs successfully.\r | |
360 | **/\r | |
361 | EFI_STATUS\r | |
362 | EFIAPI\r | |
363 | SmmReadyToLockEventNotify (\r | |
364 | IN CONST EFI_GUID *Protocol,\r | |
365 | IN VOID *Interface,\r | |
366 | IN EFI_HANDLE Handle\r | |
367 | )\r | |
368 | {\r | |
369 | mLocked = TRUE;\r | |
370 | return EFI_SUCCESS;\r | |
371 | }\r | |
372 | \r | |
373 | /**\r | |
374 | Entry Point for LockBox SMM driver.\r | |
375 | \r | |
376 | @param[in] ImageHandle Image handle of this driver.\r | |
377 | @param[in] SystemTable A Pointer to the EFI System Table.\r | |
378 | \r | |
379 | @retval EFI_SUCEESS \r | |
380 | @return Others Some error occurs.\r | |
381 | **/\r | |
382 | EFI_STATUS\r | |
383 | EFIAPI\r | |
384 | SmmLockBoxEntryPoint (\r | |
385 | IN EFI_HANDLE ImageHandle,\r | |
386 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
387 | )\r | |
388 | {\r | |
389 | EFI_STATUS Status;\r | |
390 | EFI_HANDLE DispatchHandle;\r | |
391 | VOID *Registration;\r | |
1c837cd5 | 392 | \r |
393 | //\r | |
394 | // Register LockBox communication handler\r | |
395 | //\r | |
396 | Status = gSmst->SmiHandlerRegister (\r | |
397 | SmmLockBoxHandler,\r | |
398 | &gEfiSmmLockBoxCommunicationGuid,\r | |
399 | &DispatchHandle\r | |
400 | );\r | |
401 | ASSERT_EFI_ERROR (Status);\r | |
402 | \r | |
403 | //\r | |
404 | // Register SMM Ready To Lock Protocol notification\r | |
405 | //\r | |
406 | Status = gSmst->SmmRegisterProtocolNotify (\r | |
407 | &gEfiSmmReadyToLockProtocolGuid,\r | |
408 | SmmReadyToLockEventNotify,\r | |
409 | &Registration\r | |
410 | );\r | |
411 | ASSERT_EFI_ERROR (Status);\r | |
412 | \r | |
413 | //\r | |
414 | // Install NULL to DXE data base as notify\r | |
415 | //\r | |
416 | ImageHandle = NULL;\r | |
417 | Status = gBS->InstallProtocolInterface (\r | |
418 | &ImageHandle,\r | |
419 | &gEfiLockBoxProtocolGuid,\r | |
420 | EFI_NATIVE_INTERFACE,\r | |
421 | NULL\r | |
422 | );\r | |
423 | ASSERT_EFI_ERROR (Status);\r | |
424 | \r | |
425 | return Status;\r | |
426 | }\r |