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1 | /** @file\r | |
2 | \r | |
3 | Execute pending TPM requests from OS or BIOS and Lock TPM.\r | |
4 | \r | |
5 | Caution: This module requires additional review when modified.\r | |
6 | This driver will have external input - variable.\r | |
7 | This external input must be validated carefully to avoid security issue.\r | |
8 | \r | |
9 | ExecutePendingTpmRequest() will receive untrusted input and do validation.\r | |
10 | \r | |
11 | Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r | |
12 | This program and the accompanying materials \r | |
13 | are licensed and made available under the terms and conditions of the BSD License \r | |
14 | which accompanies this distribution. The full text of the license may be found at \r | |
15 | http://opensource.org/licenses/bsd-license.php\r | |
16 | \r | |
17 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
18 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
19 | \r | |
20 | **/\r | |
21 | \r | |
22 | #include <PiDxe.h>\r | |
23 | \r | |
24 | #include <Protocol/TcgService.h>\r | |
25 | #include <Protocol/VariableLock.h>\r | |
26 | #include <Library/DebugLib.h>\r | |
27 | #include <Library/BaseMemoryLib.h>\r | |
28 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
29 | #include <Library/UefiDriverEntryPoint.h>\r | |
30 | #include <Library/UefiBootServicesTableLib.h>\r | |
31 | #include <Library/UefiLib.h>\r | |
32 | #include <Library/MemoryAllocationLib.h>\r | |
33 | #include <Library/PrintLib.h>\r | |
34 | #include <Library/HiiLib.h>\r | |
35 | #include <Guid/EventGroup.h>\r | |
36 | #include <Guid/PhysicalPresenceData.h>\r | |
37 | \r | |
38 | #define TPM_PP_USER_ABORT ((TPM_RESULT)(-0x10))\r | |
39 | #define TPM_PP_BIOS_FAILURE ((TPM_RESULT)(-0x0f))\r | |
40 | #define CONFIRM_BUFFER_SIZE 4096\r | |
41 | \r | |
42 | EFI_HII_HANDLE mPpStringPackHandle;\r | |
43 | \r | |
44 | /**\r | |
45 | Get string by string id from HII Interface.\r | |
46 | \r | |
47 | @param[in] Id String ID.\r | |
48 | \r | |
49 | @retval CHAR16 * String from ID.\r | |
50 | @retval NULL If error occurs.\r | |
51 | \r | |
52 | **/\r | |
53 | CHAR16 *\r | |
54 | PhysicalPresenceGetStringById (\r | |
55 | IN EFI_STRING_ID Id\r | |
56 | )\r | |
57 | {\r | |
58 | return HiiGetString (mPpStringPackHandle, Id, NULL);\r | |
59 | }\r | |
60 | \r | |
61 | /**\r | |
62 | Get TPM physical presence permanent flags.\r | |
63 | \r | |
64 | @param[in] TcgProtocol EFI TCG Protocol instance. \r | |
65 | @param[out] LifetimeLock physicalPresenceLifetimeLock permanent flag. \r | |
66 | @param[out] CmdEnable physicalPresenceCMDEnable permanent flag.\r | |
67 | \r | |
68 | @retval EFI_SUCCESS Flags were returns successfully.\r | |
69 | @retval other Failed to locate EFI TCG Protocol.\r | |
70 | \r | |
71 | **/\r | |
72 | EFI_STATUS\r | |
73 | GetTpmCapability (\r | |
74 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
75 | OUT BOOLEAN *LifetimeLock,\r | |
76 | OUT BOOLEAN *CmdEnable\r | |
77 | )\r | |
78 | {\r | |
79 | EFI_STATUS Status;\r | |
80 | TPM_RQU_COMMAND_HDR *TpmRqu;\r | |
81 | TPM_RSP_COMMAND_HDR *TpmRsp;\r | |
82 | UINT32 *SendBufPtr;\r | |
83 | UINT8 SendBuffer[sizeof (*TpmRqu) + sizeof (UINT32) * 3];\r | |
84 | TPM_PERMANENT_FLAGS *TpmPermanentFlags;\r | |
85 | UINT8 RecvBuffer[40];\r | |
86 | \r | |
87 | //\r | |
88 | // Fill request header\r | |
89 | //\r | |
90 | TpmRsp = (TPM_RSP_COMMAND_HDR*)RecvBuffer;\r | |
91 | TpmRqu = (TPM_RQU_COMMAND_HDR*)SendBuffer;\r | |
92 | \r | |
93 | TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
94 | TpmRqu->paramSize = SwapBytes32 (sizeof (SendBuffer));\r | |
95 | TpmRqu->ordinal = SwapBytes32 (TPM_ORD_GetCapability);\r | |
96 | \r | |
97 | //\r | |
98 | // Set request parameter\r | |
99 | //\r | |
100 | SendBufPtr = (UINT32*)(TpmRqu + 1);\r | |
101 | WriteUnaligned32 (SendBufPtr++, SwapBytes32 (TPM_CAP_FLAG));\r | |
102 | WriteUnaligned32 (SendBufPtr++, SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT)));\r | |
103 | WriteUnaligned32 (SendBufPtr, SwapBytes32 (TPM_CAP_FLAG_PERMANENT)); \r | |
104 | \r | |
105 | Status = TcgProtocol->PassThroughToTpm (\r | |
106 | TcgProtocol,\r | |
107 | sizeof (SendBuffer),\r | |
108 | (UINT8*)TpmRqu,\r | |
109 | sizeof (RecvBuffer),\r | |
110 | (UINT8*)&RecvBuffer\r | |
111 | );\r | |
112 | ASSERT_EFI_ERROR (Status);\r | |
113 | ASSERT (TpmRsp->tag == SwapBytes16 (TPM_TAG_RSP_COMMAND));\r | |
114 | ASSERT (TpmRsp->returnCode == 0);\r | |
115 | \r | |
116 | TpmPermanentFlags = (TPM_PERMANENT_FLAGS *)&RecvBuffer[sizeof (TPM_RSP_COMMAND_HDR) + sizeof (UINT32)];\r | |
117 | \r | |
118 | if (LifetimeLock != NULL) {\r | |
119 | *LifetimeLock = TpmPermanentFlags->physicalPresenceLifetimeLock;\r | |
120 | }\r | |
121 | \r | |
122 | if (CmdEnable != NULL) {\r | |
123 | *CmdEnable = TpmPermanentFlags->physicalPresenceCMDEnable;\r | |
124 | }\r | |
125 | \r | |
126 | return Status;\r | |
127 | }\r | |
128 | \r | |
129 | /**\r | |
130 | Issue TSC_PhysicalPresence command to TPM.\r | |
131 | \r | |
132 | @param[in] TcgProtocol EFI TCG Protocol instance. \r | |
133 | @param[in] PhysicalPresence The state to set the TPM's Physical Presence flags. \r | |
134 | \r | |
135 | @retval EFI_SUCCESS TPM executed the command successfully.\r | |
136 | @retval EFI_SECURITY_VIOLATION TPM returned error when executing the command.\r | |
137 | @retval other Failed to locate EFI TCG Protocol.\r | |
138 | \r | |
139 | **/\r | |
140 | EFI_STATUS\r | |
141 | TpmPhysicalPresence (\r | |
142 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
143 | IN TPM_PHYSICAL_PRESENCE PhysicalPresence\r | |
144 | )\r | |
145 | {\r | |
146 | EFI_STATUS Status;\r | |
147 | TPM_RQU_COMMAND_HDR *TpmRqu;\r | |
148 | TPM_PHYSICAL_PRESENCE *TpmPp;\r | |
149 | TPM_RSP_COMMAND_HDR TpmRsp;\r | |
150 | UINT8 Buffer[sizeof (*TpmRqu) + sizeof (*TpmPp)];\r | |
151 | \r | |
152 | TpmRqu = (TPM_RQU_COMMAND_HDR*)Buffer;\r | |
153 | TpmPp = (TPM_PHYSICAL_PRESENCE*)(TpmRqu + 1);\r | |
154 | \r | |
155 | TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
156 | TpmRqu->paramSize = SwapBytes32 (sizeof (Buffer));\r | |
157 | TpmRqu->ordinal = SwapBytes32 (TSC_ORD_PhysicalPresence);\r | |
158 | WriteUnaligned16 (TpmPp, (TPM_PHYSICAL_PRESENCE) SwapBytes16 (PhysicalPresence)); \r | |
159 | \r | |
160 | Status = TcgProtocol->PassThroughToTpm (\r | |
161 | TcgProtocol,\r | |
162 | sizeof (Buffer),\r | |
163 | (UINT8*)TpmRqu,\r | |
164 | sizeof (TpmRsp),\r | |
165 | (UINT8*)&TpmRsp\r | |
166 | );\r | |
167 | ASSERT_EFI_ERROR (Status);\r | |
168 | ASSERT (TpmRsp.tag == SwapBytes16 (TPM_TAG_RSP_COMMAND));\r | |
169 | if (TpmRsp.returnCode != 0) {\r | |
170 | //\r | |
171 | // If it fails, some requirements may be needed for this command.\r | |
172 | //\r | |
173 | return EFI_SECURITY_VIOLATION;\r | |
174 | }\r | |
175 | \r | |
176 | return Status;\r | |
177 | }\r | |
178 | \r | |
179 | /**\r | |
180 | Issue a TPM command for which no additional output data will be returned.\r | |
181 | \r | |
182 | @param[in] TcgProtocol EFI TCG Protocol instance. \r | |
183 | @param[in] Ordinal TPM command code. \r | |
184 | @param[in] AdditionalParameterSize Additional parameter size. \r | |
185 | @param[in] AdditionalParameters Pointer to the Additional paramaters. \r | |
186 | \r | |
187 | @retval TPM_PP_BIOS_FAILURE Error occurred during sending command to TPM or \r | |
188 | receiving response from TPM.\r | |
189 | @retval Others Return code from the TPM device after command execution.\r | |
190 | \r | |
191 | **/\r | |
192 | TPM_RESULT\r | |
193 | TpmCommandNoReturnData (\r | |
194 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
195 | IN TPM_COMMAND_CODE Ordinal,\r | |
196 | IN UINTN AdditionalParameterSize,\r | |
197 | IN VOID *AdditionalParameters\r | |
198 | )\r | |
199 | {\r | |
200 | EFI_STATUS Status;\r | |
201 | TPM_RQU_COMMAND_HDR *TpmRqu;\r | |
202 | TPM_RSP_COMMAND_HDR TpmRsp;\r | |
203 | UINT32 Size;\r | |
204 | \r | |
205 | TpmRqu = (TPM_RQU_COMMAND_HDR*) AllocatePool (sizeof (*TpmRqu) + AdditionalParameterSize);\r | |
206 | if (TpmRqu == NULL) {\r | |
207 | return TPM_PP_BIOS_FAILURE;\r | |
208 | }\r | |
209 | \r | |
210 | TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
211 | Size = (UINT32)(sizeof (*TpmRqu) + AdditionalParameterSize);\r | |
212 | TpmRqu->paramSize = SwapBytes32 (Size);\r | |
213 | TpmRqu->ordinal = SwapBytes32 (Ordinal);\r | |
214 | CopyMem (TpmRqu + 1, AdditionalParameters, AdditionalParameterSize);\r | |
215 | \r | |
216 | Status = TcgProtocol->PassThroughToTpm (\r | |
217 | TcgProtocol,\r | |
218 | Size,\r | |
219 | (UINT8*)TpmRqu,\r | |
220 | (UINT32)sizeof (TpmRsp),\r | |
221 | (UINT8*)&TpmRsp\r | |
222 | );\r | |
223 | FreePool (TpmRqu);\r | |
224 | if (EFI_ERROR (Status) || (TpmRsp.tag != SwapBytes16 (TPM_TAG_RSP_COMMAND))) {\r | |
225 | return TPM_PP_BIOS_FAILURE;\r | |
226 | }\r | |
227 | return SwapBytes32 (TpmRsp.returnCode);\r | |
228 | }\r | |
229 | \r | |
230 | /**\r | |
231 | Execute physical presence operation requested by the OS.\r | |
232 | \r | |
233 | @param[in] TcgProtocol EFI TCG Protocol instance.\r | |
234 | @param[in] CommandCode Physical presence operation value.\r | |
235 | @param[in, out] PpiFlags The physical presence interface flags.\r | |
236 | \r | |
237 | @retval TPM_PP_BIOS_FAILURE Unknown physical presence operation.\r | |
238 | @retval TPM_PP_BIOS_FAILURE Error occurred during sending command to TPM or \r | |
239 | receiving response from TPM.\r | |
240 | @retval Others Return code from the TPM device after command execution.\r | |
241 | \r | |
242 | **/\r | |
243 | TPM_RESULT\r | |
244 | ExecutePhysicalPresence (\r | |
245 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
246 | IN UINT8 CommandCode,\r | |
247 | IN OUT UINT8 *PpiFlags\r | |
248 | )\r | |
249 | {\r | |
250 | BOOLEAN BoolVal;\r | |
251 | TPM_RESULT TpmResponse;\r | |
252 | UINT32 InData[5];\r | |
253 | \r | |
254 | switch (CommandCode) {\r | |
255 | case PHYSICAL_PRESENCE_ENABLE:\r | |
256 | return TpmCommandNoReturnData (\r | |
257 | TcgProtocol,\r | |
258 | TPM_ORD_PhysicalEnable,\r | |
259 | 0,\r | |
260 | NULL\r | |
261 | );\r | |
262 | \r | |
263 | case PHYSICAL_PRESENCE_DISABLE:\r | |
264 | return TpmCommandNoReturnData (\r | |
265 | TcgProtocol,\r | |
266 | TPM_ORD_PhysicalDisable,\r | |
267 | 0,\r | |
268 | NULL\r | |
269 | );\r | |
270 | \r | |
271 | case PHYSICAL_PRESENCE_ACTIVATE:\r | |
272 | BoolVal = FALSE;\r | |
273 | return TpmCommandNoReturnData (\r | |
274 | TcgProtocol,\r | |
275 | TPM_ORD_PhysicalSetDeactivated,\r | |
276 | sizeof (BoolVal),\r | |
277 | &BoolVal\r | |
278 | );\r | |
279 | \r | |
280 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
281 | BoolVal = TRUE;\r | |
282 | return TpmCommandNoReturnData (\r | |
283 | TcgProtocol,\r | |
284 | TPM_ORD_PhysicalSetDeactivated,\r | |
285 | sizeof (BoolVal),\r | |
286 | &BoolVal\r | |
287 | );\r | |
288 | \r | |
289 | case PHYSICAL_PRESENCE_CLEAR:\r | |
290 | return TpmCommandNoReturnData (\r | |
291 | TcgProtocol,\r | |
292 | TPM_ORD_ForceClear,\r | |
293 | 0,\r | |
294 | NULL\r | |
295 | );\r | |
296 | \r | |
297 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
298 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE, PpiFlags);\r | |
299 | if (TpmResponse == 0) {\r | |
300 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ACTIVATE, PpiFlags);\r | |
301 | }\r | |
302 | return TpmResponse;\r | |
303 | \r | |
304 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
305 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DEACTIVATE, PpiFlags);\r | |
306 | if (TpmResponse == 0) {\r | |
307 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DISABLE, PpiFlags);\r | |
308 | }\r | |
309 | return TpmResponse;\r | |
310 | \r | |
311 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r | |
312 | BoolVal = TRUE;\r | |
313 | return TpmCommandNoReturnData (\r | |
314 | TcgProtocol,\r | |
315 | TPM_ORD_SetOwnerInstall,\r | |
316 | sizeof (BoolVal),\r | |
317 | &BoolVal\r | |
318 | );\r | |
319 | \r | |
320 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r | |
321 | BoolVal = FALSE;\r | |
322 | return TpmCommandNoReturnData (\r | |
323 | TcgProtocol,\r | |
324 | TPM_ORD_SetOwnerInstall,\r | |
325 | sizeof (BoolVal),\r | |
326 | &BoolVal\r | |
327 | );\r | |
328 | \r | |
329 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
330 | //\r | |
331 | // PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE\r | |
332 | // PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE will be executed after reboot\r | |
333 | //\r | |
334 | if ((*PpiFlags & FLAG_RESET_TRACK) == 0) {\r | |
335 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r | |
336 | *PpiFlags |= FLAG_RESET_TRACK;\r | |
337 | } else {\r | |
338 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE, PpiFlags);\r | |
339 | *PpiFlags &= ~FLAG_RESET_TRACK;\r | |
340 | }\r | |
341 | return TpmResponse;\r | |
342 | \r | |
343 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
344 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE, PpiFlags);\r | |
345 | if (TpmResponse == 0) {\r | |
346 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DEACTIVATE_DISABLE, PpiFlags);\r | |
347 | }\r | |
348 | return TpmResponse;\r | |
349 | \r | |
350 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r | |
351 | InData[0] = SwapBytes32 (TPM_SET_STCLEAR_DATA); // CapabilityArea\r | |
352 | InData[1] = SwapBytes32 (sizeof(UINT32)); // SubCapSize\r | |
353 | InData[2] = SwapBytes32 (TPM_SD_DEFERREDPHYSICALPRESENCE); // SubCap\r | |
354 | InData[3] = SwapBytes32 (sizeof(UINT32)); // SetValueSize\r | |
355 | InData[4] = SwapBytes32 (1); // UnownedFieldUpgrade; bit0\r | |
356 | return TpmCommandNoReturnData (\r | |
357 | TcgProtocol,\r | |
358 | TPM_ORD_SetCapability,\r | |
359 | sizeof (UINT32) * 5,\r | |
360 | InData\r | |
361 | );\r | |
362 | \r | |
363 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r | |
364 | //\r | |
365 | // TPM_SetOperatorAuth\r | |
366 | // This command requires UI to prompt user for Auth data\r | |
367 | // Here it is NOT implemented\r | |
368 | //\r | |
369 | return TPM_PP_BIOS_FAILURE;\r | |
370 | \r | |
371 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r | |
372 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR, PpiFlags);\r | |
373 | if (TpmResponse == 0) {\r | |
374 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r | |
375 | }\r | |
376 | return TpmResponse;\r | |
377 | \r | |
378 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:\r | |
379 | *PpiFlags &= ~FLAG_NO_PPI_PROVISION;\r | |
380 | return 0;\r | |
381 | \r | |
382 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:\r | |
383 | *PpiFlags |= FLAG_NO_PPI_PROVISION;\r | |
384 | return 0;\r | |
385 | \r | |
386 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:\r | |
387 | *PpiFlags &= ~FLAG_NO_PPI_CLEAR;\r | |
388 | return 0;\r | |
389 | \r | |
390 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:\r | |
391 | *PpiFlags |= FLAG_NO_PPI_CLEAR;\r | |
392 | return 0;\r | |
393 | \r | |
394 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:\r | |
395 | *PpiFlags &= ~FLAG_NO_PPI_MAINTENANCE;\r | |
396 | return 0;\r | |
397 | \r | |
398 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:\r | |
399 | *PpiFlags |= FLAG_NO_PPI_MAINTENANCE;\r | |
400 | return 0;\r | |
401 | \r | |
402 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
403 | //\r | |
404 | // PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_CLEAR\r | |
405 | // PHYSICAL_PRESENCE_CLEAR will be executed after reboot.\r | |
406 | //\r | |
407 | if ((*PpiFlags & FLAG_RESET_TRACK) == 0) {\r | |
408 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r | |
409 | *PpiFlags |= FLAG_RESET_TRACK;\r | |
410 | } else {\r | |
411 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR, PpiFlags);\r | |
412 | *PpiFlags &= ~FLAG_RESET_TRACK;\r | |
413 | }\r | |
414 | return TpmResponse;\r | |
415 | \r | |
416 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r | |
417 | //\r | |
418 | // PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE\r | |
419 | // PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE will be executed after reboot.\r | |
420 | //\r | |
421 | if ((*PpiFlags & FLAG_RESET_TRACK) == 0) {\r | |
422 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r | |
423 | *PpiFlags |= FLAG_RESET_TRACK;\r | |
424 | } else {\r | |
425 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE, PpiFlags);\r | |
426 | *PpiFlags &= ~FLAG_RESET_TRACK;\r | |
427 | } \r | |
428 | return TpmResponse;\r | |
429 | \r | |
430 | default:\r | |
431 | ;\r | |
432 | }\r | |
433 | return TPM_PP_BIOS_FAILURE;\r | |
434 | }\r | |
435 | \r | |
436 | \r | |
437 | /**\r | |
438 | Read the specified key for user confirmation.\r | |
439 | \r | |
440 | @param[in] CautionKey If true, F12 is used as confirm key;\r | |
441 | If false, F10 is used as confirm key.\r | |
442 | \r | |
443 | @retval TRUE User confirmed the changes by input.\r | |
444 | @retval FALSE User discarded the changes or device error.\r | |
445 | \r | |
446 | **/\r | |
447 | BOOLEAN\r | |
448 | ReadUserKey (\r | |
449 | IN BOOLEAN CautionKey\r | |
450 | )\r | |
451 | {\r | |
452 | EFI_STATUS Status;\r | |
453 | EFI_INPUT_KEY Key;\r | |
454 | UINT16 InputKey;\r | |
455 | UINTN Index;\r | |
456 | \r | |
457 | InputKey = 0; \r | |
458 | do {\r | |
459 | Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);\r | |
460 | if (Status == EFI_NOT_READY) {\r | |
461 | gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);\r | |
462 | continue;\r | |
463 | }\r | |
464 | \r | |
465 | if (Status == EFI_DEVICE_ERROR) {\r | |
466 | return FALSE;\r | |
467 | }\r | |
468 | \r | |
469 | if (Key.ScanCode == SCAN_ESC) {\r | |
470 | InputKey = Key.ScanCode;\r | |
471 | }\r | |
472 | if ((Key.ScanCode == SCAN_F10) && !CautionKey) {\r | |
473 | InputKey = Key.ScanCode;\r | |
474 | }\r | |
475 | if ((Key.ScanCode == SCAN_F12) && CautionKey) {\r | |
476 | InputKey = Key.ScanCode;\r | |
477 | }\r | |
478 | } while (InputKey == 0);\r | |
479 | \r | |
480 | if (InputKey != SCAN_ESC) {\r | |
481 | return TRUE;\r | |
482 | }\r | |
483 | \r | |
484 | return FALSE;\r | |
485 | }\r | |
486 | \r | |
487 | /**\r | |
488 | The constructor function register UNI strings into imageHandle.\r | |
489 | \r | |
490 | It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r | |
491 | \r | |
492 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
493 | @param SystemTable A pointer to the EFI System Table.\r | |
494 | \r | |
495 | @retval EFI_SUCCESS The constructor successfully added string package.\r | |
496 | @retval Other value The constructor can't add string package.\r | |
497 | \r | |
498 | **/\r | |
499 | EFI_STATUS\r | |
500 | EFIAPI\r | |
501 | TcgPhysicalPresenceLibConstructor (\r | |
502 | IN EFI_HANDLE ImageHandle,\r | |
503 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
504 | )\r | |
505 | {\r | |
506 | mPpStringPackHandle = HiiAddPackages (&gEfiPhysicalPresenceGuid, ImageHandle, DxeTcgPhysicalPresenceLibStrings, NULL);\r | |
507 | ASSERT (mPpStringPackHandle != NULL);\r | |
508 | \r | |
509 | return EFI_SUCCESS;\r | |
510 | }\r | |
511 | \r | |
512 | /**\r | |
513 | Display the confirm text and get user confirmation.\r | |
514 | \r | |
515 | @param[in] TpmPpCommand The requested TPM physical presence command.\r | |
516 | \r | |
517 | @retval TRUE The user has confirmed the changes.\r | |
518 | @retval FALSE The user doesn't confirm the changes.\r | |
519 | **/\r | |
520 | BOOLEAN\r | |
521 | UserConfirm (\r | |
522 | IN UINT8 TpmPpCommand\r | |
523 | )\r | |
524 | {\r | |
525 | CHAR16 *ConfirmText;\r | |
526 | CHAR16 *TmpStr1;\r | |
527 | CHAR16 *TmpStr2; \r | |
528 | UINTN BufSize;\r | |
529 | BOOLEAN CautionKey;\r | |
530 | UINT16 Index;\r | |
531 | CHAR16 DstStr[81];\r | |
532 | \r | |
533 | TmpStr2 = NULL;\r | |
534 | CautionKey = FALSE;\r | |
535 | BufSize = CONFIRM_BUFFER_SIZE;\r | |
536 | ConfirmText = AllocateZeroPool (BufSize);\r | |
537 | ASSERT (ConfirmText != NULL);\r | |
538 | \r | |
539 | switch (TpmPpCommand) {\r | |
540 | case PHYSICAL_PRESENCE_ENABLE:\r | |
541 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE));\r | |
542 | \r | |
543 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
544 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
545 | FreePool (TmpStr1);\r | |
546 | \r | |
547 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
548 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
549 | FreePool (TmpStr1);\r | |
550 | break;\r | |
551 | \r | |
552 | case PHYSICAL_PRESENCE_DISABLE:\r | |
553 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DISABLE));\r | |
554 | \r | |
555 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
556 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
557 | FreePool (TmpStr1);\r | |
558 | \r | |
559 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r | |
560 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
561 | FreePool (TmpStr1);\r | |
562 | \r | |
563 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
564 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
565 | FreePool (TmpStr1);\r | |
566 | break;\r | |
567 | \r | |
568 | case PHYSICAL_PRESENCE_ACTIVATE:\r | |
569 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACTIVATE));\r | |
570 | \r | |
571 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
572 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
573 | FreePool (TmpStr1);\r | |
574 | \r | |
575 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
576 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
577 | FreePool (TmpStr1);\r | |
578 | break;\r | |
579 | \r | |
580 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
581 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DEACTIVATE));\r | |
582 | \r | |
583 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
584 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
585 | FreePool (TmpStr1);\r | |
586 | \r | |
587 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r | |
588 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
589 | FreePool (TmpStr1);\r | |
590 | \r | |
591 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
592 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
593 | FreePool (TmpStr1); \r | |
594 | break;\r | |
595 | \r | |
596 | case PHYSICAL_PRESENCE_CLEAR:\r | |
597 | CautionKey = TRUE;\r | |
598 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r | |
599 | \r | |
600 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
601 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
602 | FreePool (TmpStr1);\r | |
603 | \r | |
604 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
605 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
606 | StrnCat (ConfirmText, L" \n\n", (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
607 | FreePool (TmpStr1); \r | |
608 | \r | |
609 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
610 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
611 | FreePool (TmpStr1);\r | |
612 | break;\r | |
613 | \r | |
614 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
615 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE));\r | |
616 | \r | |
617 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
618 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
619 | FreePool (TmpStr1);\r | |
620 | \r | |
621 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r | |
622 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
623 | FreePool (TmpStr1);\r | |
624 | \r | |
625 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
626 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
627 | FreePool (TmpStr1);\r | |
628 | break;\r | |
629 | \r | |
630 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
631 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DEACTIVATE_DISABLE));\r | |
632 | \r | |
633 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r | |
634 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
635 | FreePool (TmpStr1);\r | |
636 | \r | |
637 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_OFF));\r | |
638 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
639 | FreePool (TmpStr1);\r | |
640 | \r | |
641 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r | |
642 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
643 | FreePool (TmpStr1);\r | |
644 | \r | |
645 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
646 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
647 | FreePool (TmpStr1);\r | |
648 | break;\r | |
649 | \r | |
650 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r | |
651 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ALLOW_TAKE_OWNERSHIP));\r | |
652 | \r | |
653 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r | |
654 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
655 | FreePool (TmpStr1);\r | |
656 | \r | |
657 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
658 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
659 | FreePool (TmpStr1);\r | |
660 | break;\r | |
661 | \r | |
662 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r | |
663 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DISALLOW_TAKE_OWNERSHIP));\r | |
664 | \r | |
665 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r | |
666 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
667 | FreePool (TmpStr1);\r | |
668 | \r | |
669 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
670 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
671 | FreePool (TmpStr1);\r | |
672 | break;\r | |
673 | \r | |
674 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
675 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_TURN_ON));\r | |
676 | \r | |
677 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
678 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
679 | FreePool (TmpStr1);\r | |
680 | \r | |
681 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r | |
682 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
683 | FreePool (TmpStr1);\r | |
684 | \r | |
685 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
686 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
687 | FreePool (TmpStr1);\r | |
688 | break;\r | |
689 | \r | |
690 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
691 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_TURN_OFF));\r | |
692 | \r | |
693 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r | |
694 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
695 | FreePool (TmpStr1);\r | |
696 | \r | |
697 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_OFF));\r | |
698 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
699 | FreePool (TmpStr1);\r | |
700 | \r | |
701 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r | |
702 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
703 | FreePool (TmpStr1);\r | |
704 | \r | |
705 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
706 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
707 | FreePool (TmpStr1);\r | |
708 | break;\r | |
709 | \r | |
710 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r | |
711 | CautionKey = TRUE;\r | |
712 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_UNOWNED_FIELD_UPGRADE));\r | |
713 | \r | |
714 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_UPGRADE_HEAD_STR)); \r | |
715 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
716 | FreePool (TmpStr1);\r | |
717 | \r | |
718 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_MAINTAIN));\r | |
719 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
720 | FreePool (TmpStr1);\r | |
721 | \r | |
722 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
723 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
724 | FreePool (TmpStr1);\r | |
725 | break;\r | |
726 | \r | |
727 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r | |
728 | //\r | |
729 | // TPM_SetOperatorAuth\r | |
730 | // This command requires UI to prompt user for Auth data\r | |
731 | // Here it is NOT implemented\r | |
732 | //\r | |
733 | break;\r | |
734 | \r | |
735 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r | |
736 | CautionKey = TRUE;\r | |
737 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR_TURN_ON));\r | |
738 | \r | |
739 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
740 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
741 | FreePool (TmpStr1);\r | |
742 | \r | |
743 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r | |
744 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
745 | FreePool (TmpStr1);\r | |
746 | \r | |
747 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
748 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
749 | FreePool (TmpStr1);\r | |
750 | \r | |
751 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR_CONT));\r | |
752 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
753 | FreePool (TmpStr1);\r | |
754 | \r | |
755 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
756 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
757 | FreePool (TmpStr1);\r | |
758 | break;\r | |
759 | \r | |
760 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:\r | |
761 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_PROVISION));\r | |
762 | \r | |
763 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r | |
764 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
765 | FreePool (TmpStr1);\r | |
766 | \r | |
767 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
768 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
769 | FreePool (TmpStr1);\r | |
770 | \r | |
771 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r | |
772 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
773 | FreePool (TmpStr1);\r | |
774 | break;\r | |
775 | \r | |
776 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:\r | |
777 | CautionKey = TRUE;\r | |
778 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r | |
779 | \r | |
780 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r | |
781 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
782 | FreePool (TmpStr1);\r | |
783 | \r | |
784 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_CLEAR));\r | |
785 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
786 | FreePool (TmpStr1);\r | |
787 | \r | |
788 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
789 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
790 | StrnCat (ConfirmText, L" \n\n", (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
791 | FreePool (TmpStr1); \r | |
792 | \r | |
793 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
794 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
795 | FreePool (TmpStr1);\r | |
796 | \r | |
797 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r | |
798 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
799 | FreePool (TmpStr1);\r | |
800 | break;\r | |
801 | \r | |
802 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:\r | |
803 | CautionKey = TRUE;\r | |
804 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_MAINTAIN));\r | |
805 | \r | |
806 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r | |
807 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
808 | FreePool (TmpStr1);\r | |
809 | \r | |
810 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_MAINTAIN));\r | |
811 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
812 | FreePool (TmpStr1);\r | |
813 | \r | |
814 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
815 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
816 | FreePool (TmpStr1);\r | |
817 | \r | |
818 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r | |
819 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
820 | FreePool (TmpStr1);\r | |
821 | break;\r | |
822 | \r | |
823 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
824 | CautionKey = TRUE;\r | |
825 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE_CLEAR));\r | |
826 | \r | |
827 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
828 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
829 | FreePool (TmpStr1);\r | |
830 | \r | |
831 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
832 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
833 | StrnCat (ConfirmText, L" \n\n", (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
834 | FreePool (TmpStr1);\r | |
835 | \r | |
836 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
837 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
838 | FreePool (TmpStr1);\r | |
839 | break;\r | |
840 | \r | |
841 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r | |
842 | CautionKey = TRUE;\r | |
843 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE));\r | |
844 | \r | |
845 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
846 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
847 | FreePool (TmpStr1);\r | |
848 | \r | |
849 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r | |
850 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
851 | FreePool (TmpStr1);\r | |
852 | \r | |
853 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
854 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
855 | FreePool (TmpStr1);\r | |
856 | \r | |
857 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR_CONT));\r | |
858 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
859 | FreePool (TmpStr1);\r | |
860 | \r | |
861 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
862 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
863 | FreePool (TmpStr1);\r | |
864 | break;\r | |
865 | \r | |
866 | default:\r | |
867 | ;\r | |
868 | }\r | |
869 | \r | |
870 | if (TmpStr2 == NULL) {\r | |
871 | FreePool (ConfirmText);\r | |
872 | return FALSE;\r | |
873 | }\r | |
874 | \r | |
875 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_REJECT_KEY));\r | |
876 | BufSize -= StrSize (ConfirmText);\r | |
877 | UnicodeSPrint (ConfirmText + StrLen (ConfirmText), BufSize, TmpStr1, TmpStr2);\r | |
878 | \r | |
879 | DstStr[80] = L'\0';\r | |
880 | for (Index = 0; Index < StrLen (ConfirmText); Index += 80) {\r | |
881 | StrnCpy(DstStr, ConfirmText + Index, 80); \r | |
882 | Print (DstStr); \r | |
883 | }\r | |
884 | \r | |
885 | FreePool (TmpStr1);\r | |
886 | FreePool (TmpStr2);\r | |
887 | FreePool (ConfirmText);\r | |
888 | \r | |
889 | if (ReadUserKey (CautionKey)) {\r | |
890 | return TRUE;\r | |
891 | }\r | |
892 | \r | |
893 | return FALSE; \r | |
894 | }\r | |
895 | \r | |
896 | /**\r | |
897 | Check if there is a valid physical presence command request. Also updates parameter value \r | |
898 | to whether the requested physical presence command already confirmed by user\r | |
899 | \r | |
900 | @param[in] TcgPpData EFI TCG Physical Presence request data.\r | |
901 | @param[in] Flags The physical presence interface flags. \r | |
902 | @param[out] RequestConfirmed If the physical presence operation command required user confirm from UI.\r | |
903 | True, it indicates the command doesn't require user confirm, or already confirmed \r | |
904 | in last boot cycle by user.\r | |
905 | False, it indicates the command need user confirm from UI.\r | |
906 | \r | |
907 | @retval TRUE Physical Presence operation command is valid.\r | |
908 | @retval FALSE Physical Presence operation command is invalid.\r | |
909 | \r | |
910 | **/\r | |
911 | BOOLEAN\r | |
912 | HaveValidTpmRequest (\r | |
913 | IN EFI_PHYSICAL_PRESENCE *TcgPpData,\r | |
914 | IN UINT8 Flags,\r | |
915 | OUT BOOLEAN *RequestConfirmed\r | |
916 | )\r | |
917 | {\r | |
918 | \r | |
919 | *RequestConfirmed = FALSE;\r | |
920 | \r | |
921 | switch (TcgPpData->PPRequest) {\r | |
922 | case PHYSICAL_PRESENCE_NO_ACTION:\r | |
923 | *RequestConfirmed = TRUE;\r | |
924 | return TRUE;\r | |
925 | case PHYSICAL_PRESENCE_ENABLE:\r | |
926 | case PHYSICAL_PRESENCE_DISABLE:\r | |
927 | case PHYSICAL_PRESENCE_ACTIVATE:\r | |
928 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
929 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
930 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
931 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r | |
932 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r | |
933 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
934 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
935 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r | |
936 | if ((Flags & FLAG_NO_PPI_PROVISION) != 0) {\r | |
937 | *RequestConfirmed = TRUE;\r | |
938 | }\r | |
939 | break;\r | |
940 | \r | |
941 | case PHYSICAL_PRESENCE_CLEAR:\r | |
942 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
943 | if ((Flags & FLAG_NO_PPI_CLEAR) != 0) {\r | |
944 | *RequestConfirmed = TRUE;\r | |
945 | }\r | |
946 | break;\r | |
947 | \r | |
948 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r | |
949 | if ((Flags & FLAG_NO_PPI_MAINTENANCE) != 0) {\r | |
950 | *RequestConfirmed = TRUE;\r | |
951 | }\r | |
952 | break;\r | |
953 | \r | |
954 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r | |
955 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r | |
956 | if ((Flags & FLAG_NO_PPI_CLEAR) != 0 && (Flags & FLAG_NO_PPI_PROVISION) != 0) {\r | |
957 | *RequestConfirmed = TRUE;\r | |
958 | }\r | |
959 | break;\r | |
960 | \r | |
961 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:\r | |
962 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:\r | |
963 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:\r | |
964 | *RequestConfirmed = TRUE;\r | |
965 | break;\r | |
966 | \r | |
967 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:\r | |
968 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:\r | |
969 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:\r | |
970 | break;\r | |
971 | \r | |
972 | default:\r | |
973 | //\r | |
974 | // Wrong Physical Presence command\r | |
975 | //\r | |
976 | return FALSE;\r | |
977 | }\r | |
978 | \r | |
979 | if ((Flags & FLAG_RESET_TRACK) != 0) {\r | |
980 | //\r | |
981 | // It had been confirmed in last boot, it doesn't need confirm again.\r | |
982 | //\r | |
983 | *RequestConfirmed = TRUE;\r | |
984 | }\r | |
985 | \r | |
986 | //\r | |
987 | // Physical Presence command is correct\r | |
988 | //\r | |
989 | return TRUE;\r | |
990 | }\r | |
991 | \r | |
992 | \r | |
993 | /**\r | |
994 | Check and execute the requested physical presence command.\r | |
995 | \r | |
996 | Caution: This function may receive untrusted input.\r | |
997 | TcgPpData variable is external input, so this function will validate\r | |
998 | its data structure to be valid value.\r | |
999 | \r | |
1000 | @param[in] TcgProtocol EFI TCG Protocol instance. \r | |
1001 | @param[in] TcgPpData Point to the physical presence NV variable.\r | |
1002 | @param[in] Flags The physical presence interface flags.\r | |
1003 | \r | |
1004 | **/\r | |
1005 | VOID\r | |
1006 | ExecutePendingTpmRequest (\r | |
1007 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
1008 | IN EFI_PHYSICAL_PRESENCE *TcgPpData,\r | |
1009 | IN UINT8 Flags\r | |
1010 | )\r | |
1011 | {\r | |
1012 | EFI_STATUS Status;\r | |
1013 | UINTN DataSize;\r | |
1014 | BOOLEAN RequestConfirmed;\r | |
1015 | UINT8 NewFlags;\r | |
1016 | \r | |
1017 | if (!HaveValidTpmRequest(TcgPpData, Flags, &RequestConfirmed)) {\r | |
1018 | //\r | |
1019 | // Invalid operation request.\r | |
1020 | //\r | |
1021 | TcgPpData->PPResponse = TPM_PP_BIOS_FAILURE;\r | |
1022 | TcgPpData->LastPPRequest = TcgPpData->PPRequest;\r | |
1023 | TcgPpData->PPRequest = PHYSICAL_PRESENCE_NO_ACTION;\r | |
1024 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1025 | Status = gRT->SetVariable (\r | |
1026 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1027 | &gEfiPhysicalPresenceGuid,\r | |
1028 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1029 | DataSize,\r | |
1030 | TcgPpData\r | |
1031 | );\r | |
1032 | return;\r | |
1033 | }\r | |
1034 | \r | |
1035 | if (!RequestConfirmed) {\r | |
1036 | //\r | |
1037 | // Print confirm text and wait for approval. \r | |
1038 | //\r | |
1039 | RequestConfirmed = UserConfirm (TcgPpData->PPRequest);\r | |
1040 | }\r | |
1041 | \r | |
1042 | //\r | |
1043 | // Execute requested physical presence command\r | |
1044 | //\r | |
1045 | TcgPpData->PPResponse = TPM_PP_USER_ABORT;\r | |
1046 | NewFlags = Flags;\r | |
1047 | if (RequestConfirmed) {\r | |
1048 | TcgPpData->PPResponse = ExecutePhysicalPresence (TcgProtocol, TcgPpData->PPRequest, &NewFlags);\r | |
1049 | }\r | |
1050 | \r | |
1051 | //\r | |
1052 | // Save the flags if it is updated.\r | |
1053 | //\r | |
1054 | if (Flags != NewFlags) {\r | |
1055 | Status = gRT->SetVariable (\r | |
1056 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1057 | &gEfiPhysicalPresenceGuid,\r | |
1058 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1059 | sizeof (UINT8),\r | |
1060 | &NewFlags\r | |
1061 | ); \r | |
1062 | }\r | |
1063 | \r | |
1064 | \r | |
1065 | //\r | |
1066 | // Clear request\r | |
1067 | //\r | |
1068 | if ((NewFlags & FLAG_RESET_TRACK) == 0) {\r | |
1069 | TcgPpData->LastPPRequest = TcgPpData->PPRequest;\r | |
1070 | TcgPpData->PPRequest = PHYSICAL_PRESENCE_NO_ACTION; \r | |
1071 | }\r | |
1072 | \r | |
1073 | //\r | |
1074 | // Save changes\r | |
1075 | //\r | |
1076 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1077 | Status = gRT->SetVariable (\r | |
1078 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1079 | &gEfiPhysicalPresenceGuid,\r | |
1080 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1081 | DataSize,\r | |
1082 | TcgPpData\r | |
1083 | );\r | |
1084 | if (EFI_ERROR (Status)) {\r | |
1085 | return;\r | |
1086 | }\r | |
1087 | \r | |
1088 | if (TcgPpData->PPResponse == TPM_PP_USER_ABORT) {\r | |
1089 | return;\r | |
1090 | }\r | |
1091 | \r | |
1092 | //\r | |
1093 | // Reset system to make new TPM settings in effect\r | |
1094 | //\r | |
1095 | switch (TcgPpData->LastPPRequest) {\r | |
1096 | case PHYSICAL_PRESENCE_ACTIVATE:\r | |
1097 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
1098 | case PHYSICAL_PRESENCE_CLEAR:\r | |
1099 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
1100 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
1101 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
1102 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
1103 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r | |
1104 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r | |
1105 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
1106 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE: \r | |
1107 | break;\r | |
1108 | default:\r | |
1109 | if (TcgPpData->PPRequest != PHYSICAL_PRESENCE_NO_ACTION) {\r | |
1110 | break;\r | |
1111 | }\r | |
1112 | return;\r | |
1113 | }\r | |
1114 | \r | |
1115 | Print (L"Rebooting system to make TPM settings in effect\n");\r | |
1116 | gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);\r | |
1117 | ASSERT (FALSE); \r | |
1118 | }\r | |
1119 | \r | |
1120 | /**\r | |
1121 | Check and execute the pending TPM request and Lock TPM.\r | |
1122 | \r | |
1123 | The TPM request may come from OS or BIOS. This API will display request information and wait \r | |
1124 | for user confirmation if TPM request exists. The TPM request will be sent to TPM device after\r | |
1125 | the TPM request is confirmed, and one or more reset may be required to make TPM request to \r | |
1126 | take effect. At last, it will lock TPM to prevent TPM state change by malware.\r | |
1127 | \r | |
1128 | This API should be invoked after console in and console out are all ready as they are required\r | |
1129 | to display request information and get user input to confirm the request. This API should also \r | |
1130 | be invoked as early as possible as TPM is locked in this function.\r | |
1131 | \r | |
1132 | **/\r | |
1133 | VOID\r | |
1134 | EFIAPI\r | |
1135 | TcgPhysicalPresenceLibProcessRequest (\r | |
1136 | VOID\r | |
1137 | )\r | |
1138 | {\r | |
1139 | EFI_STATUS Status;\r | |
1140 | BOOLEAN LifetimeLock;\r | |
1141 | BOOLEAN CmdEnable;\r | |
1142 | UINTN DataSize;\r | |
1143 | EFI_PHYSICAL_PRESENCE TcgPpData;\r | |
1144 | EFI_TCG_PROTOCOL *TcgProtocol;\r | |
1145 | EDKII_VARIABLE_LOCK_PROTOCOL *VariableLockProtocol;\r | |
1146 | UINT8 PpiFlags;\r | |
1147 | \r | |
1148 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);\r | |
1149 | if (EFI_ERROR (Status)) {\r | |
1150 | return ;\r | |
1151 | }\r | |
1152 | \r | |
1153 | //\r | |
1154 | // Initialize physical presence flags.\r | |
1155 | //\r | |
1156 | DataSize = sizeof (UINT8);\r | |
1157 | Status = gRT->GetVariable (\r | |
1158 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1159 | &gEfiPhysicalPresenceGuid,\r | |
1160 | NULL,\r | |
1161 | &DataSize,\r | |
1162 | &PpiFlags\r | |
1163 | );\r | |
1164 | if (EFI_ERROR (Status)) {\r | |
1165 | if (Status == EFI_NOT_FOUND) {\r | |
1166 | PpiFlags = FLAG_NO_PPI_PROVISION;\r | |
1167 | Status = gRT->SetVariable (\r | |
1168 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1169 | &gEfiPhysicalPresenceGuid,\r | |
1170 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1171 | sizeof (UINT8),\r | |
1172 | &PpiFlags\r | |
1173 | );\r | |
1174 | }\r | |
1175 | ASSERT_EFI_ERROR (Status);\r | |
1176 | }\r | |
1177 | DEBUG ((EFI_D_ERROR, "[TPM] PpiFlags = %x, Status = %r\n", PpiFlags, Status));\r | |
1178 | \r | |
1179 | //\r | |
1180 | // This flags variable controls whether physical presence is required for TPM command. \r | |
1181 | // It should be protected from malicious software. We set it as read-only variable here.\r | |
1182 | //\r | |
1183 | Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **)&VariableLockProtocol);\r | |
1184 | if (!EFI_ERROR (Status)) {\r | |
1185 | Status = VariableLockProtocol->RequestToLock (\r | |
1186 | VariableLockProtocol,\r | |
1187 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1188 | &gEfiPhysicalPresenceGuid\r | |
1189 | );\r | |
1190 | if (EFI_ERROR (Status)) {\r | |
1191 | DEBUG ((EFI_D_ERROR, "[TPM] Error when lock variable %s, Status = %r\n", PHYSICAL_PRESENCE_FLAGS_VARIABLE, Status));\r | |
1192 | ASSERT_EFI_ERROR (Status);\r | |
1193 | }\r | |
1194 | }\r | |
1195 | \r | |
1196 | //\r | |
1197 | // Initialize physical presence variable.\r | |
1198 | //\r | |
1199 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1200 | Status = gRT->GetVariable (\r | |
1201 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1202 | &gEfiPhysicalPresenceGuid,\r | |
1203 | NULL,\r | |
1204 | &DataSize,\r | |
1205 | &TcgPpData\r | |
1206 | );\r | |
1207 | if (EFI_ERROR (Status)) {\r | |
1208 | if (Status == EFI_NOT_FOUND) {\r | |
1209 | ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));\r | |
1210 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1211 | Status = gRT->SetVariable (\r | |
1212 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1213 | &gEfiPhysicalPresenceGuid,\r | |
1214 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1215 | DataSize,\r | |
1216 | &TcgPpData\r | |
1217 | );\r | |
1218 | }\r | |
1219 | ASSERT_EFI_ERROR (Status);\r | |
1220 | }\r | |
1221 | \r | |
1222 | DEBUG ((EFI_D_INFO, "[TPM] Flags=%x, PPRequest=%x\n", PpiFlags, TcgPpData.PPRequest));\r | |
1223 | \r | |
1224 | if (TcgPpData.PPRequest == PHYSICAL_PRESENCE_NO_ACTION) {\r | |
1225 | //\r | |
1226 | // No operation request\r | |
1227 | //\r | |
1228 | return;\r | |
1229 | }\r | |
1230 | \r | |
1231 | Status = GetTpmCapability (TcgProtocol, &LifetimeLock, &CmdEnable);\r | |
1232 | if (EFI_ERROR (Status)) {\r | |
1233 | return ;\r | |
1234 | }\r | |
1235 | \r | |
1236 | if (!CmdEnable) {\r | |
1237 | if (LifetimeLock) {\r | |
1238 | //\r | |
1239 | // physicalPresenceCMDEnable is locked, can't execute physical presence command.\r | |
1240 | //\r | |
1241 | return ;\r | |
1242 | }\r | |
1243 | Status = TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_CMD_ENABLE);\r | |
1244 | if (EFI_ERROR (Status)) {\r | |
1245 | return ;\r | |
1246 | }\r | |
1247 | }\r | |
1248 | \r | |
1249 | //\r | |
1250 | // Set operator physical presence flags\r | |
1251 | //\r | |
1252 | TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_PRESENT);\r | |
1253 | \r | |
1254 | //\r | |
1255 | // Execute pending TPM request.\r | |
1256 | // \r | |
1257 | ExecutePendingTpmRequest (TcgProtocol, &TcgPpData, PpiFlags);\r | |
1258 | DEBUG ((EFI_D_INFO, "[TPM] PPResponse = %x\n", TcgPpData.PPResponse));\r | |
1259 | \r | |
1260 | //\r | |
1261 | // Lock physical presence.\r | |
1262 | //\r | |
1263 | TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_NOTPRESENT | TPM_PHYSICAL_PRESENCE_LOCK);\r | |
1264 | }\r | |
1265 | \r | |
1266 | /**\r | |
1267 | Check if the pending TPM request needs user input to confirm.\r | |
1268 | \r | |
1269 | The TPM request may come from OS. This API will check if TPM request exists and need user\r | |
1270 | input to confirmation.\r | |
1271 | \r | |
1272 | @retval TRUE TPM needs input to confirm user physical presence.\r | |
1273 | @retval FALSE TPM doesn't need input to confirm user physical presence.\r | |
1274 | \r | |
1275 | **/\r | |
1276 | BOOLEAN\r | |
1277 | EFIAPI\r | |
1278 | TcgPhysicalPresenceLibNeedUserConfirm(\r | |
1279 | VOID\r | |
1280 | )\r | |
1281 | {\r | |
1282 | EFI_STATUS Status;\r | |
1283 | EFI_PHYSICAL_PRESENCE TcgPpData;\r | |
1284 | UINTN DataSize;\r | |
1285 | BOOLEAN RequestConfirmed;\r | |
1286 | BOOLEAN LifetimeLock;\r | |
1287 | BOOLEAN CmdEnable;\r | |
1288 | EFI_TCG_PROTOCOL *TcgProtocol;\r | |
1289 | UINT8 PpiFlags;\r | |
1290 | \r | |
1291 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);\r | |
1292 | if (EFI_ERROR (Status)) {\r | |
1293 | return FALSE;\r | |
1294 | }\r | |
1295 | \r | |
1296 | //\r | |
1297 | // Check Tpm requests\r | |
1298 | //\r | |
1299 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1300 | Status = gRT->GetVariable (\r | |
1301 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1302 | &gEfiPhysicalPresenceGuid,\r | |
1303 | NULL,\r | |
1304 | &DataSize,\r | |
1305 | &TcgPpData\r | |
1306 | );\r | |
1307 | if (EFI_ERROR (Status)) {\r | |
1308 | return FALSE;\r | |
1309 | }\r | |
1310 | \r | |
1311 | DataSize = sizeof (UINT8);\r | |
1312 | Status = gRT->GetVariable (\r | |
1313 | PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1314 | &gEfiPhysicalPresenceGuid,\r | |
1315 | NULL,\r | |
1316 | &DataSize,\r | |
1317 | &PpiFlags\r | |
1318 | );\r | |
1319 | if (EFI_ERROR (Status)) {\r | |
1320 | return FALSE;\r | |
1321 | }\r | |
1322 | \r | |
1323 | if (TcgPpData.PPRequest == PHYSICAL_PRESENCE_NO_ACTION) {\r | |
1324 | //\r | |
1325 | // No operation request\r | |
1326 | //\r | |
1327 | return FALSE;\r | |
1328 | }\r | |
1329 | \r | |
1330 | if (!HaveValidTpmRequest(&TcgPpData, PpiFlags, &RequestConfirmed)) {\r | |
1331 | //\r | |
1332 | // Invalid operation request.\r | |
1333 | //\r | |
1334 | return FALSE;\r | |
1335 | }\r | |
1336 | \r | |
1337 | //\r | |
1338 | // Check Tpm Capability\r | |
1339 | //\r | |
1340 | Status = GetTpmCapability (TcgProtocol, &LifetimeLock, &CmdEnable);\r | |
1341 | if (EFI_ERROR (Status)) {\r | |
1342 | return FALSE;\r | |
1343 | }\r | |
1344 | \r | |
1345 | if (!CmdEnable) {\r | |
1346 | if (LifetimeLock) {\r | |
1347 | //\r | |
1348 | // physicalPresenceCMDEnable is locked, can't execute physical presence command.\r | |
1349 | //\r | |
1350 | return FALSE;\r | |
1351 | }\r | |
1352 | }\r | |
1353 | \r | |
1354 | if (!RequestConfirmed) {\r | |
1355 | //\r | |
1356 | // Need UI to confirm\r | |
1357 | //\r | |
1358 | return TRUE;\r | |
1359 | }\r | |
1360 | \r | |
1361 | return FALSE;\r | |
1362 | }\r | |
1363 | \r |