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a2918326 SZ |
1 | /** @file\r |
2 | Var Check PCD handler.\r | |
3 | \r | |
cd16355b | 4 | Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>\r |
9d510e61 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a2918326 SZ |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <Library/VarCheckLib.h>\r | |
10 | #include <Library/BaseLib.h>\r | |
11 | #include <Library/DebugLib.h>\r | |
12 | #include <Library/BaseMemoryLib.h>\r | |
13 | #include <Library/MemoryAllocationLib.h>\r | |
14 | #include <Library/DxeServicesLib.h>\r | |
15 | \r | |
16 | #include "VarCheckPcdStructure.h"\r | |
17 | \r | |
18 | //#define DUMP_VAR_CHECK_PCD\r | |
19 | \r | |
20 | GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mVarCheckPcdHex[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};\r | |
21 | \r | |
22 | /**\r | |
23 | Dump some hexadecimal data.\r | |
24 | \r | |
25 | @param[in] Indent How many spaces to indent the output.\r | |
26 | @param[in] Offset The offset of the dump.\r | |
27 | @param[in] DataSize The size in bytes of UserData.\r | |
28 | @param[in] UserData The data to dump.\r | |
29 | \r | |
30 | **/\r | |
31 | VOID\r | |
32 | VarCheckPcdInternalDumpHex (\r | |
33 | IN UINTN Indent,\r | |
34 | IN UINTN Offset,\r | |
35 | IN UINTN DataSize,\r | |
36 | IN VOID *UserData\r | |
37 | )\r | |
38 | {\r | |
39 | UINT8 *Data;\r | |
40 | \r | |
41 | CHAR8 Val[50];\r | |
42 | \r | |
43 | CHAR8 Str[20];\r | |
44 | \r | |
45 | UINT8 TempByte;\r | |
46 | UINTN Size;\r | |
47 | UINTN Index;\r | |
48 | \r | |
49 | Data = UserData;\r | |
50 | while (DataSize != 0) {\r | |
51 | Size = 16;\r | |
52 | if (Size > DataSize) {\r | |
53 | Size = DataSize;\r | |
54 | }\r | |
55 | \r | |
56 | for (Index = 0; Index < Size; Index += 1) {\r | |
57 | TempByte = Data[Index];\r | |
58 | Val[Index * 3 + 0] = mVarCheckPcdHex[TempByte >> 4];\r | |
59 | Val[Index * 3 + 1] = mVarCheckPcdHex[TempByte & 0xF];\r | |
60 | Val[Index * 3 + 2] = (CHAR8) ((Index == 7) ? '-' : ' ');\r | |
61 | Str[Index] = (CHAR8) ((TempByte < ' ' || TempByte > 'z') ? '.' : TempByte);\r | |
62 | }\r | |
63 | \r | |
64 | Val[Index * 3] = 0;\r | |
65 | Str[Index] = 0;\r | |
66 | DEBUG ((EFI_D_INFO, "%*a%08X: %-48a *%a*\r\n", Indent, "", Offset, Val, Str));\r | |
67 | \r | |
68 | Data += Size;\r | |
69 | Offset += Size;\r | |
70 | DataSize -= Size;\r | |
71 | }\r | |
72 | }\r | |
73 | \r | |
74 | /**\r | |
75 | Var Check Pcd ValidData.\r | |
76 | \r | |
77 | @param[in] PcdValidData Pointer to Pcd ValidData\r | |
78 | @param[in] Data Data pointer.\r | |
79 | @param[in] DataSize Size of Data to set.\r | |
80 | \r | |
81 | @retval TRUE Check pass\r | |
82 | @retval FALSE Check fail.\r | |
83 | \r | |
84 | **/\r | |
85 | BOOLEAN\r | |
86 | VarCheckPcdValidData (\r | |
87 | IN VAR_CHECK_PCD_VALID_DATA_HEADER *PcdValidData,\r | |
88 | IN VOID *Data,\r | |
89 | IN UINTN DataSize\r | |
90 | )\r | |
91 | {\r | |
92 | UINT64 OneData;\r | |
93 | UINT64 Minimum;\r | |
94 | UINT64 Maximum;\r | |
95 | UINT64 OneValue;\r | |
96 | UINT8 *Ptr;\r | |
97 | \r | |
98 | OneData = 0;\r | |
99 | CopyMem (&OneData, (UINT8 *) Data + PcdValidData->VarOffset, PcdValidData->StorageWidth);\r | |
100 | \r | |
101 | switch (PcdValidData->Type) {\r | |
102 | case VarCheckPcdValidList:\r | |
103 | Ptr = (UINT8 *) ((VAR_CHECK_PCD_VALID_LIST *) PcdValidData + 1);\r | |
104 | while ((UINTN) Ptr < (UINTN) PcdValidData + PcdValidData->Length) {\r | |
105 | OneValue = 0;\r | |
106 | CopyMem (&OneValue, Ptr, PcdValidData->StorageWidth);\r | |
107 | if (OneData == OneValue) {\r | |
108 | //\r | |
109 | // Match\r | |
110 | //\r | |
111 | break;\r | |
112 | }\r | |
113 | Ptr += PcdValidData->StorageWidth;\r | |
114 | }\r | |
115 | if ((UINTN) Ptr >= ((UINTN) PcdValidData + PcdValidData->Length)) {\r | |
116 | //\r | |
117 | // No match\r | |
118 | //\r | |
119 | DEBUG ((EFI_D_INFO, "VarCheckPcdValidData fail: ValidList mismatch (0x%lx)\n", OneData));\r | |
120 | DEBUG_CODE (VarCheckPcdInternalDumpHex (2, 0, PcdValidData->Length, (UINT8 *) PcdValidData););\r | |
121 | return FALSE;\r | |
122 | }\r | |
123 | break;\r | |
124 | \r | |
125 | case VarCheckPcdValidRange:\r | |
126 | Minimum = 0;\r | |
127 | Maximum = 0;\r | |
128 | Ptr = (UINT8 *) ((VAR_CHECK_PCD_VALID_RANGE *) PcdValidData + 1);\r | |
129 | while ((UINTN) Ptr < (UINTN) PcdValidData + PcdValidData->Length) {\r | |
130 | CopyMem (&Minimum, Ptr, PcdValidData->StorageWidth);\r | |
131 | Ptr += PcdValidData->StorageWidth;\r | |
132 | CopyMem (&Maximum, Ptr, PcdValidData->StorageWidth);\r | |
133 | Ptr += PcdValidData->StorageWidth;\r | |
134 | \r | |
135 | if ((OneData >= Minimum) && (OneData <= Maximum)) {\r | |
136 | return TRUE;\r | |
137 | }\r | |
138 | }\r | |
139 | DEBUG ((EFI_D_INFO, "VarCheckPcdValidData fail: ValidRange mismatch (0x%lx)\n", OneData));\r | |
140 | DEBUG_CODE (VarCheckPcdInternalDumpHex (2, 0, PcdValidData->Length, (UINT8 *) PcdValidData););\r | |
141 | return FALSE;\r | |
142 | break;\r | |
143 | \r | |
144 | default:\r | |
145 | ASSERT (FALSE);\r | |
146 | break;\r | |
147 | }\r | |
148 | \r | |
149 | return TRUE;\r | |
150 | }\r | |
151 | \r | |
152 | VAR_CHECK_PCD_VARIABLE_HEADER *mVarCheckPcdBin = NULL;\r | |
153 | UINTN mVarCheckPcdBinSize = 0;\r | |
154 | \r | |
155 | /**\r | |
156 | SetVariable check handler PCD.\r | |
157 | \r | |
158 | @param[in] VariableName Name of Variable to set.\r | |
159 | @param[in] VendorGuid Variable vendor GUID.\r | |
160 | @param[in] Attributes Attribute value of the variable.\r | |
161 | @param[in] DataSize Size of Data to set.\r | |
162 | @param[in] Data Data pointer.\r | |
163 | \r | |
164 | @retval EFI_SUCCESS The SetVariable check result was success.\r | |
165 | @retval EFI_SECURITY_VIOLATION Check fail.\r | |
166 | \r | |
167 | **/\r | |
168 | EFI_STATUS\r | |
169 | EFIAPI\r | |
170 | SetVariableCheckHandlerPcd (\r | |
171 | IN CHAR16 *VariableName,\r | |
172 | IN EFI_GUID *VendorGuid,\r | |
173 | IN UINT32 Attributes,\r | |
174 | IN UINTN DataSize,\r | |
175 | IN VOID *Data\r | |
176 | )\r | |
177 | {\r | |
178 | VAR_CHECK_PCD_VARIABLE_HEADER *PcdVariable;\r | |
179 | VAR_CHECK_PCD_VALID_DATA_HEADER *PcdValidData;\r | |
180 | \r | |
181 | if (mVarCheckPcdBin == NULL) {\r | |
182 | return EFI_SUCCESS;\r | |
183 | }\r | |
184 | \r | |
185 | if ((((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) && (DataSize == 0)) || (Attributes == 0)) {\r | |
186 | //\r | |
187 | // Do not check delete variable.\r | |
188 | //\r | |
189 | return EFI_SUCCESS;\r | |
190 | }\r | |
191 | \r | |
192 | //\r | |
193 | // For Pcd Variable header align.\r | |
194 | //\r | |
195 | PcdVariable = (VAR_CHECK_PCD_VARIABLE_HEADER *) HEADER_ALIGN (mVarCheckPcdBin);\r | |
196 | while ((UINTN) PcdVariable < ((UINTN) mVarCheckPcdBin + mVarCheckPcdBinSize)) {\r | |
197 | if ((StrCmp ((CHAR16 *) (PcdVariable + 1), VariableName) == 0) &&\r | |
198 | (CompareGuid (&PcdVariable->Guid, VendorGuid))) {\r | |
199 | //\r | |
200 | // Found the Pcd Variable that could be used to do check.\r | |
201 | //\r | |
202 | DEBUG ((EFI_D_INFO, "VarCheckPcdVariable - %s:%g with Attributes = 0x%08x Size = 0x%x\n", VariableName, VendorGuid, Attributes, DataSize));\r | |
203 | if ((PcdVariable->Attributes != 0) && PcdVariable->Attributes != Attributes) {\r | |
204 | DEBUG ((EFI_D_INFO, "VarCheckPcdVariable fail for Attributes - 0x%08x\n", PcdVariable->Attributes));\r | |
205 | return EFI_SECURITY_VIOLATION;\r | |
206 | }\r | |
207 | \r | |
208 | if (DataSize == 0) {\r | |
209 | DEBUG ((EFI_D_INFO, "VarCheckPcdVariable - CHECK PASS with DataSize == 0 !\n"));\r | |
210 | return EFI_SUCCESS;\r | |
211 | }\r | |
212 | \r | |
213 | //\r | |
214 | // Do the check.\r | |
215 | // For Pcd ValidData header align.\r | |
216 | //\r | |
217 | PcdValidData = (VAR_CHECK_PCD_VALID_DATA_HEADER *) HEADER_ALIGN (((UINTN) PcdVariable + PcdVariable->HeaderLength));\r | |
218 | while ((UINTN) PcdValidData < ((UINTN) PcdVariable + PcdVariable->Length)) {\r | |
219 | if (((UINTN) PcdValidData->VarOffset + PcdValidData->StorageWidth) <= DataSize) {\r | |
220 | if (!VarCheckPcdValidData (PcdValidData, Data, DataSize)) {\r | |
221 | return EFI_SECURITY_VIOLATION;\r | |
222 | }\r | |
223 | }\r | |
224 | //\r | |
225 | // For Pcd ValidData header align.\r | |
226 | //\r | |
227 | PcdValidData = (VAR_CHECK_PCD_VALID_DATA_HEADER *) HEADER_ALIGN (((UINTN) PcdValidData + PcdValidData->Length));\r | |
228 | }\r | |
229 | \r | |
230 | DEBUG ((EFI_D_INFO, "VarCheckPcdVariable - ALL CHECK PASS!\n"));\r | |
231 | return EFI_SUCCESS;\r | |
232 | }\r | |
233 | //\r | |
234 | // For Pcd Variable header align.\r | |
235 | //\r | |
236 | PcdVariable = (VAR_CHECK_PCD_VARIABLE_HEADER *) HEADER_ALIGN (((UINTN) PcdVariable + PcdVariable->Length));\r | |
237 | }\r | |
238 | \r | |
239 | // Not found, so pass.\r | |
240 | return EFI_SUCCESS;\r | |
241 | }\r | |
242 | \r | |
243 | #ifdef DUMP_VAR_CHECK_PCD\r | |
244 | /**\r | |
245 | Dump Pcd ValidData.\r | |
246 | \r | |
247 | @param[in] PcdValidData Pointer to Pcd ValidData.\r | |
248 | \r | |
249 | **/\r | |
250 | VOID\r | |
251 | DumpPcdValidData (\r | |
252 | IN VAR_CHECK_PCD_VALID_DATA_HEADER *PcdValidData\r | |
253 | )\r | |
254 | {\r | |
255 | UINT64 Minimum;\r | |
256 | UINT64 Maximum;\r | |
257 | UINT64 OneValue;\r | |
258 | UINT8 *Ptr;\r | |
259 | \r | |
260 | DEBUG ((EFI_D_INFO, " VAR_CHECK_PCD_VALID_DATA_HEADER\n"));\r | |
261 | DEBUG ((EFI_D_INFO, " Type - 0x%02x\n", PcdValidData->Type));\r | |
262 | DEBUG ((EFI_D_INFO, " Length - 0x%02x\n", PcdValidData->Length));\r | |
263 | DEBUG ((EFI_D_INFO, " VarOffset - 0x%04x\n", PcdValidData->VarOffset));\r | |
264 | DEBUG ((EFI_D_INFO, " StorageWidth - 0x%02x\n", PcdValidData->StorageWidth));\r | |
265 | \r | |
266 | switch (PcdValidData->Type) {\r | |
267 | case VarCheckPcdValidList:\r | |
268 | Ptr = (UINT8 *) ((VAR_CHECK_PCD_VALID_LIST *) PcdValidData + 1);\r | |
269 | while ((UINTN) Ptr < ((UINTN) PcdValidData + PcdValidData->Length)) {\r | |
270 | OneValue = 0;\r | |
271 | CopyMem (&OneValue, Ptr, PcdValidData->StorageWidth);\r | |
272 | switch (PcdValidData->StorageWidth) {\r | |
273 | case sizeof (UINT8):\r | |
274 | DEBUG ((EFI_D_INFO, " ValidList - 0x%02x\n", OneValue));\r | |
275 | break;\r | |
276 | case sizeof (UINT16):\r | |
277 | DEBUG ((EFI_D_INFO, " ValidList - 0x%04x\n", OneValue));\r | |
278 | break;\r | |
279 | case sizeof (UINT32):\r | |
280 | DEBUG ((EFI_D_INFO, " ValidList - 0x%08x\n", OneValue));\r | |
281 | break;\r | |
282 | case sizeof (UINT64):\r | |
283 | DEBUG ((EFI_D_INFO, " ValidList - 0x%016lx\n", OneValue));\r | |
284 | break;\r | |
285 | default:\r | |
286 | ASSERT (FALSE);\r | |
287 | break;\r | |
288 | }\r | |
289 | Ptr += PcdValidData->StorageWidth;\r | |
290 | }\r | |
291 | break;\r | |
292 | \r | |
293 | case VarCheckPcdValidRange:\r | |
294 | Minimum = 0;\r | |
295 | Maximum = 0;\r | |
296 | Ptr = (UINT8 *) ((VAR_CHECK_PCD_VALID_RANGE *) PcdValidData + 1);\r | |
297 | while ((UINTN) Ptr < (UINTN) PcdValidData + PcdValidData->Length) {\r | |
298 | CopyMem (&Minimum, Ptr, PcdValidData->StorageWidth);\r | |
299 | Ptr += PcdValidData->StorageWidth;\r | |
300 | CopyMem (&Maximum, Ptr, PcdValidData->StorageWidth);\r | |
301 | Ptr += PcdValidData->StorageWidth;\r | |
302 | \r | |
303 | switch (PcdValidData->StorageWidth) {\r | |
304 | case sizeof (UINT8):\r | |
305 | DEBUG ((EFI_D_INFO, " Minimum - 0x%02x\n", Minimum));\r | |
306 | DEBUG ((EFI_D_INFO, " Maximum - 0x%02x\n", Maximum));\r | |
307 | break;\r | |
308 | case sizeof (UINT16):\r | |
309 | DEBUG ((EFI_D_INFO, " Minimum - 0x%04x\n", Minimum));\r | |
310 | DEBUG ((EFI_D_INFO, " Maximum - 0x%04x\n", Maximum));\r | |
311 | break;\r | |
312 | case sizeof (UINT32):\r | |
313 | DEBUG ((EFI_D_INFO, " Minimum - 0x%08x\n", Minimum));\r | |
314 | DEBUG ((EFI_D_INFO, " Maximum - 0x%08x\n", Maximum));\r | |
315 | break;\r | |
316 | case sizeof (UINT64):\r | |
317 | DEBUG ((EFI_D_INFO, " Minimum - 0x%016lx\n", Minimum));\r | |
318 | DEBUG ((EFI_D_INFO, " Maximum - 0x%016lx\n", Maximum));\r | |
319 | break;\r | |
320 | default:\r | |
321 | ASSERT (FALSE);\r | |
322 | break;\r | |
323 | }\r | |
324 | }\r | |
325 | break;\r | |
326 | \r | |
327 | default:\r | |
328 | ASSERT (FALSE);\r | |
329 | break;\r | |
330 | }\r | |
331 | }\r | |
332 | \r | |
333 | /**\r | |
334 | Dump Pcd Variable.\r | |
335 | \r | |
336 | @param[in] PcdVariable Pointer to Pcd Variable.\r | |
337 | \r | |
338 | **/\r | |
339 | VOID\r | |
340 | DumpPcdVariable (\r | |
341 | IN VAR_CHECK_PCD_VARIABLE_HEADER *PcdVariable\r | |
342 | )\r | |
343 | {\r | |
344 | VAR_CHECK_PCD_VALID_DATA_HEADER *PcdValidData;\r | |
345 | \r | |
346 | DEBUG ((EFI_D_INFO, "VAR_CHECK_PCD_VARIABLE_HEADER\n"));\r | |
347 | DEBUG ((EFI_D_INFO, " Revision - 0x%04x\n", PcdVariable->Revision));\r | |
348 | DEBUG ((EFI_D_INFO, " HeaderLength - 0x%04x\n", PcdVariable->HeaderLength));\r | |
349 | DEBUG ((EFI_D_INFO, " Length - 0x%08x\n", PcdVariable->Length));\r | |
350 | DEBUG ((EFI_D_INFO, " Type - 0x%02x\n", PcdVariable->Type));\r | |
351 | DEBUG ((EFI_D_INFO, " Attributes - 0x%08x\n", PcdVariable->Attributes));\r | |
352 | DEBUG ((EFI_D_INFO, " Guid - %g\n", &PcdVariable->Guid));\r | |
353 | DEBUG ((EFI_D_INFO, " Name - %s\n", PcdVariable + 1));\r | |
354 | \r | |
355 | //\r | |
356 | // For Pcd ValidData header align.\r | |
357 | //\r | |
358 | PcdValidData = (VAR_CHECK_PCD_VALID_DATA_HEADER *) HEADER_ALIGN (((UINTN) PcdVariable + PcdVariable->HeaderLength));\r | |
359 | while ((UINTN) PcdValidData < ((UINTN) PcdVariable + PcdVariable->Length)) {\r | |
360 | //\r | |
361 | // Dump Pcd ValidData related to the Pcd Variable.\r | |
362 | //\r | |
363 | DumpPcdValidData (PcdValidData);\r | |
364 | //\r | |
365 | // For Pcd ValidData header align.\r | |
366 | //\r | |
367 | PcdValidData = (VAR_CHECK_PCD_VALID_DATA_HEADER *) HEADER_ALIGN (((UINTN) PcdValidData + PcdValidData->Length));\r | |
368 | }\r | |
369 | }\r | |
370 | \r | |
371 | /**\r | |
372 | Dump Var Check PCD.\r | |
373 | \r | |
374 | @param[in] VarCheckPcdBin Pointer to VarCheckPcdBin.\r | |
375 | @param[in] VarCheckPcdBinSize VarCheckPcdBin size.\r | |
376 | \r | |
377 | **/\r | |
378 | VOID\r | |
379 | DumpVarCheckPcd (\r | |
380 | IN VOID *VarCheckPcdBin,\r | |
381 | IN UINTN VarCheckPcdBinSize\r | |
382 | )\r | |
383 | {\r | |
384 | VAR_CHECK_PCD_VARIABLE_HEADER *PcdVariable;\r | |
385 | \r | |
386 | DEBUG ((EFI_D_INFO, "DumpVarCheckPcd\n"));\r | |
387 | \r | |
388 | //\r | |
389 | // For Pcd Variable header align.\r | |
390 | //\r | |
391 | PcdVariable = (VAR_CHECK_PCD_VARIABLE_HEADER *) HEADER_ALIGN (VarCheckPcdBin);\r | |
392 | while ((UINTN) PcdVariable < ((UINTN) VarCheckPcdBin + VarCheckPcdBinSize)) {\r | |
393 | DumpPcdVariable (PcdVariable);\r | |
394 | //\r | |
395 | // For Pcd Variable header align.\r | |
396 | //\r | |
397 | PcdVariable = (VAR_CHECK_PCD_VARIABLE_HEADER *) HEADER_ALIGN (((UINTN) PcdVariable + PcdVariable->Length));\r | |
398 | }\r | |
399 | }\r | |
400 | #endif\r | |
401 | \r | |
402 | /**\r | |
403 | Locate VarCheckPcdBin.\r | |
404 | \r | |
405 | **/\r | |
406 | VOID\r | |
407 | EFIAPI\r | |
408 | LocateVarCheckPcdBin (\r | |
409 | VOID\r | |
410 | )\r | |
411 | {\r | |
412 | EFI_STATUS Status;\r | |
413 | VAR_CHECK_PCD_VARIABLE_HEADER *VarCheckPcdBin;\r | |
414 | UINTN VarCheckPcdBinSize;\r | |
415 | \r | |
416 | //\r | |
417 | // Search the VarCheckPcdBin from the first RAW section of current FFS.\r | |
418 | //\r | |
419 | Status = GetSectionFromFfs (\r | |
420 | EFI_SECTION_RAW,\r | |
421 | 0,\r | |
422 | (VOID **) &VarCheckPcdBin,\r | |
423 | &VarCheckPcdBinSize\r | |
424 | );\r | |
425 | if (!EFI_ERROR (Status)) {\r | |
426 | //\r | |
427 | // AllocateRuntimeZeroPool () from MemoryAllocateLib is used for runtime access\r | |
428 | // in SetVariable check handler.\r | |
429 | //\r | |
430 | mVarCheckPcdBin = AllocateRuntimeCopyPool (VarCheckPcdBinSize, VarCheckPcdBin);\r | |
431 | ASSERT (mVarCheckPcdBin != NULL);\r | |
cd16355b SZ |
432 | //\r |
433 | // Make sure the allocated buffer for VarCheckPcdBin at required alignment.\r | |
434 | //\r | |
435 | ASSERT ((((UINTN) mVarCheckPcdBin) & (HEADER_ALIGNMENT - 1)) == 0);\r | |
a2918326 SZ |
436 | mVarCheckPcdBinSize = VarCheckPcdBinSize;\r |
437 | FreePool (VarCheckPcdBin);\r | |
438 | \r | |
439 | DEBUG ((EFI_D_INFO, "VarCheckPcdBin - at 0x%x size = 0x%x\n", mVarCheckPcdBin, mVarCheckPcdBinSize));\r | |
440 | \r | |
441 | #ifdef DUMP_VAR_CHECK_PCD\r | |
442 | DEBUG_CODE (\r | |
443 | DumpVarCheckPcd (mVarCheckPcdBin, mVarCheckPcdBinSize);\r | |
444 | );\r | |
445 | #endif\r | |
446 | } else {\r | |
447 | DEBUG ((EFI_D_INFO, "[VarCheckPcd] No VarCheckPcdBin found at the first RAW section\n"));\r | |
448 | }\r | |
449 | }\r | |
450 | \r | |
451 | /**\r | |
452 | Constructor function of VarCheckPcdLib to register var check PCD handler.\r | |
453 | \r | |
454 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
455 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
456 | \r | |
457 | @retval EFI_SUCCESS The constructor executed correctly.\r | |
458 | \r | |
459 | **/\r | |
460 | EFI_STATUS\r | |
461 | EFIAPI\r | |
462 | VarCheckPcdLibNullClassConstructor (\r | |
463 | IN EFI_HANDLE ImageHandle,\r | |
464 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
465 | )\r | |
466 | {\r | |
467 | LocateVarCheckPcdBin ();\r | |
468 | VarCheckLibRegisterAddressPointer ((VOID **) &mVarCheckPcdBin);\r | |
469 | VarCheckLibRegisterSetVariableCheckHandler (SetVariableCheckHandlerPcd);\r | |
470 | \r | |
471 | return EFI_SUCCESS;\r | |
472 | }\r |