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0c18794e | 1 | /** @file\r |
607599bf | 2 | \r |
3 | Execute pending TPM requests from OS or BIOS and Lock TPM.\r | |
4 | \r | |
dc204d5a JY |
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 | |
03ecb576 | 11 | Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r |
0c18794e | 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 | |
607599bf | 22 | #include <PiDxe.h>\r |
23 | \r | |
24 | #include <Protocol/TcgService.h>\r | |
25 | #include <Library/DebugLib.h>\r | |
26 | #include <Library/BaseMemoryLib.h>\r | |
27 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
28 | #include <Library/UefiDriverEntryPoint.h>\r | |
29 | #include <Library/UefiBootServicesTableLib.h>\r | |
30 | #include <Library/UefiLib.h>\r | |
31 | #include <Library/MemoryAllocationLib.h>\r | |
32 | #include <Library/PrintLib.h>\r | |
33 | #include <Library/HiiLib.h>\r | |
34 | #include <Guid/EventGroup.h>\r | |
35 | #include <Guid/PhysicalPresenceData.h>\r | |
36 | \r | |
37 | #define TPM_PP_USER_ABORT ((TPM_RESULT)(-0x10))\r | |
38 | #define TPM_PP_BIOS_FAILURE ((TPM_RESULT)(-0x0f))\r | |
39 | #define CONFIRM_BUFFER_SIZE 4096\r | |
0c18794e | 40 | \r |
41 | EFI_HII_HANDLE mPpStringPackHandle;\r | |
42 | \r | |
607599bf | 43 | /**\r |
44 | Get string by string id from HII Interface.\r | |
45 | \r | |
46 | @param[in] Id String ID.\r | |
47 | \r | |
48 | @retval CHAR16 * String from ID.\r | |
49 | @retval NULL If error occurs.\r | |
50 | \r | |
51 | **/\r | |
52 | CHAR16 *\r | |
53 | PhysicalPresenceGetStringById (\r | |
54 | IN EFI_STRING_ID Id\r | |
55 | )\r | |
56 | {\r | |
57 | return HiiGetString (mPpStringPackHandle, Id, NULL);\r | |
58 | }\r | |
59 | \r | |
0c18794e | 60 | /**\r |
61 | Get TPM physical presence permanent flags.\r | |
62 | \r | |
607599bf | 63 | @param[in] TcgProtocol EFI TCG Protocol instance. \r |
64 | @param[out] LifetimeLock physicalPresenceLifetimeLock permanent flag. \r | |
65 | @param[out] CmdEnable physicalPresenceCMDEnable permanent flag.\r | |
0c18794e | 66 | \r |
67 | @retval EFI_SUCCESS Flags were returns successfully.\r | |
68 | @retval other Failed to locate EFI TCG Protocol.\r | |
69 | \r | |
70 | **/\r | |
71 | EFI_STATUS\r | |
72 | GetTpmCapability (\r | |
607599bf | 73 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r |
0c18794e | 74 | OUT BOOLEAN *LifetimeLock,\r |
75 | OUT BOOLEAN *CmdEnable\r | |
76 | )\r | |
77 | {\r | |
78 | EFI_STATUS Status;\r | |
0c18794e | 79 | TPM_RQU_COMMAND_HDR *TpmRqu;\r |
80 | TPM_RSP_COMMAND_HDR *TpmRsp;\r | |
81 | UINT32 *SendBufPtr;\r | |
82 | UINT8 SendBuffer[sizeof (*TpmRqu) + sizeof (UINT32) * 3];\r | |
83 | TPM_PERMANENT_FLAGS *TpmPermanentFlags;\r | |
84 | UINT8 RecvBuffer[40];\r | |
85 | \r | |
0c18794e | 86 | //\r |
87 | // Fill request header\r | |
88 | //\r | |
89 | TpmRsp = (TPM_RSP_COMMAND_HDR*)RecvBuffer;\r | |
90 | TpmRqu = (TPM_RQU_COMMAND_HDR*)SendBuffer;\r | |
91 | \r | |
607599bf | 92 | TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r |
93 | TpmRqu->paramSize = SwapBytes32 (sizeof (SendBuffer));\r | |
94 | TpmRqu->ordinal = SwapBytes32 (TPM_ORD_GetCapability);\r | |
0c18794e | 95 | \r |
96 | //\r | |
97 | // Set request parameter\r | |
98 | //\r | |
99 | SendBufPtr = (UINT32*)(TpmRqu + 1);\r | |
607599bf | 100 | WriteUnaligned32 (SendBufPtr++, SwapBytes32 (TPM_CAP_FLAG));\r |
101 | WriteUnaligned32 (SendBufPtr++, SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT)));\r | |
102 | WriteUnaligned32 (SendBufPtr, SwapBytes32 (TPM_CAP_FLAG_PERMANENT)); \r | |
0c18794e | 103 | \r |
104 | Status = TcgProtocol->PassThroughToTpm (\r | |
105 | TcgProtocol,\r | |
106 | sizeof (SendBuffer),\r | |
107 | (UINT8*)TpmRqu,\r | |
108 | sizeof (RecvBuffer),\r | |
109 | (UINT8*)&RecvBuffer\r | |
110 | );\r | |
111 | ASSERT_EFI_ERROR (Status);\r | |
607599bf | 112 | ASSERT (TpmRsp->tag == SwapBytes16 (TPM_TAG_RSP_COMMAND));\r |
0c18794e | 113 | ASSERT (TpmRsp->returnCode == 0);\r |
114 | \r | |
115 | TpmPermanentFlags = (TPM_PERMANENT_FLAGS *)&RecvBuffer[sizeof (TPM_RSP_COMMAND_HDR) + sizeof (UINT32)];\r | |
116 | \r | |
117 | if (LifetimeLock != NULL) {\r | |
118 | *LifetimeLock = TpmPermanentFlags->physicalPresenceLifetimeLock;\r | |
119 | }\r | |
120 | \r | |
121 | if (CmdEnable != NULL) {\r | |
122 | *CmdEnable = TpmPermanentFlags->physicalPresenceCMDEnable;\r | |
123 | }\r | |
124 | \r | |
125 | return Status;\r | |
126 | }\r | |
127 | \r | |
128 | /**\r | |
129 | Issue TSC_PhysicalPresence command to TPM.\r | |
130 | \r | |
607599bf | 131 | @param[in] TcgProtocol EFI TCG Protocol instance. \r |
0c18794e | 132 | @param[in] PhysicalPresence The state to set the TPM's Physical Presence flags. \r |
133 | \r | |
134 | @retval EFI_SUCCESS TPM executed the command successfully.\r | |
135 | @retval EFI_SECURITY_VIOLATION TPM returned error when executing the command.\r | |
136 | @retval other Failed to locate EFI TCG Protocol.\r | |
137 | \r | |
138 | **/\r | |
139 | EFI_STATUS\r | |
140 | TpmPhysicalPresence (\r | |
607599bf | 141 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r |
0c18794e | 142 | IN TPM_PHYSICAL_PRESENCE PhysicalPresence\r |
143 | )\r | |
144 | {\r | |
145 | EFI_STATUS Status;\r | |
0c18794e | 146 | TPM_RQU_COMMAND_HDR *TpmRqu;\r |
147 | TPM_PHYSICAL_PRESENCE *TpmPp;\r | |
148 | TPM_RSP_COMMAND_HDR TpmRsp;\r | |
149 | UINT8 Buffer[sizeof (*TpmRqu) + sizeof (*TpmPp)];\r | |
150 | \r | |
0c18794e | 151 | TpmRqu = (TPM_RQU_COMMAND_HDR*)Buffer;\r |
152 | TpmPp = (TPM_PHYSICAL_PRESENCE*)(TpmRqu + 1);\r | |
153 | \r | |
607599bf | 154 | TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r |
155 | TpmRqu->paramSize = SwapBytes32 (sizeof (Buffer));\r | |
156 | TpmRqu->ordinal = SwapBytes32 (TSC_ORD_PhysicalPresence);\r | |
157 | WriteUnaligned16 (TpmPp, (TPM_PHYSICAL_PRESENCE) SwapBytes16 (PhysicalPresence)); \r | |
0c18794e | 158 | \r |
159 | Status = TcgProtocol->PassThroughToTpm (\r | |
160 | TcgProtocol,\r | |
161 | sizeof (Buffer),\r | |
162 | (UINT8*)TpmRqu,\r | |
163 | sizeof (TpmRsp),\r | |
164 | (UINT8*)&TpmRsp\r | |
165 | );\r | |
166 | ASSERT_EFI_ERROR (Status);\r | |
607599bf | 167 | ASSERT (TpmRsp.tag == SwapBytes16 (TPM_TAG_RSP_COMMAND));\r |
0c18794e | 168 | if (TpmRsp.returnCode != 0) {\r |
169 | //\r | |
170 | // If it fails, some requirements may be needed for this command.\r | |
171 | //\r | |
172 | return EFI_SECURITY_VIOLATION;\r | |
173 | }\r | |
607599bf | 174 | \r |
0c18794e | 175 | return Status;\r |
176 | }\r | |
177 | \r | |
178 | /**\r | |
179 | Issue a TPM command for which no additional output data will be returned.\r | |
180 | \r | |
181 | @param[in] TcgProtocol EFI TCG Protocol instance. \r | |
182 | @param[in] Ordinal TPM command code. \r | |
183 | @param[in] AdditionalParameterSize Additional parameter size. \r | |
184 | @param[in] AdditionalParameters Pointer to the Additional paramaters. \r | |
185 | \r | |
186 | @retval TPM_PP_BIOS_FAILURE Error occurred during sending command to TPM or \r | |
187 | receiving response from TPM.\r | |
188 | @retval Others Return code from the TPM device after command execution.\r | |
189 | \r | |
190 | **/\r | |
191 | TPM_RESULT\r | |
192 | TpmCommandNoReturnData (\r | |
193 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
194 | IN TPM_COMMAND_CODE Ordinal,\r | |
195 | IN UINTN AdditionalParameterSize,\r | |
196 | IN VOID *AdditionalParameters\r | |
197 | )\r | |
198 | {\r | |
199 | EFI_STATUS Status;\r | |
200 | TPM_RQU_COMMAND_HDR *TpmRqu;\r | |
201 | TPM_RSP_COMMAND_HDR TpmRsp;\r | |
202 | UINT32 Size;\r | |
203 | \r | |
607599bf | 204 | TpmRqu = (TPM_RQU_COMMAND_HDR*) AllocatePool (sizeof (*TpmRqu) + AdditionalParameterSize);\r |
0c18794e | 205 | if (TpmRqu == NULL) {\r |
206 | return TPM_PP_BIOS_FAILURE;\r | |
207 | }\r | |
208 | \r | |
607599bf | 209 | TpmRqu->tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r |
0c18794e | 210 | Size = (UINT32)(sizeof (*TpmRqu) + AdditionalParameterSize);\r |
607599bf | 211 | TpmRqu->paramSize = SwapBytes32 (Size);\r |
212 | TpmRqu->ordinal = SwapBytes32 (Ordinal);\r | |
213 | CopyMem (TpmRqu + 1, AdditionalParameters, AdditionalParameterSize);\r | |
0c18794e | 214 | \r |
215 | Status = TcgProtocol->PassThroughToTpm (\r | |
216 | TcgProtocol,\r | |
217 | Size,\r | |
218 | (UINT8*)TpmRqu,\r | |
219 | (UINT32)sizeof (TpmRsp),\r | |
220 | (UINT8*)&TpmRsp\r | |
221 | );\r | |
222 | FreePool (TpmRqu);\r | |
607599bf | 223 | if (EFI_ERROR (Status) || (TpmRsp.tag != SwapBytes16 (TPM_TAG_RSP_COMMAND))) {\r |
0c18794e | 224 | return TPM_PP_BIOS_FAILURE;\r |
225 | }\r | |
607599bf | 226 | return SwapBytes32 (TpmRsp.returnCode);\r |
0c18794e | 227 | }\r |
228 | \r | |
229 | /**\r | |
230 | Execute physical presence operation requested by the OS.\r | |
231 | \r | |
607599bf | 232 | @param[in] TcgProtocol EFI TCG Protocol instance.\r |
233 | @param[in] CommandCode Physical presence operation value.\r | |
234 | @param[in, out] PpiFlags The physical presence interface flags.\r | |
0c18794e | 235 | \r |
236 | @retval TPM_PP_BIOS_FAILURE Unknown physical presence operation.\r | |
237 | @retval TPM_PP_BIOS_FAILURE Error occurred during sending command to TPM or \r | |
238 | receiving response from TPM.\r | |
239 | @retval Others Return code from the TPM device after command execution.\r | |
240 | \r | |
241 | **/\r | |
242 | TPM_RESULT\r | |
243 | ExecutePhysicalPresence (\r | |
244 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
245 | IN UINT8 CommandCode,\r | |
246 | IN OUT UINT8 *PpiFlags\r | |
247 | )\r | |
248 | {\r | |
249 | BOOLEAN BoolVal;\r | |
250 | TPM_RESULT TpmResponse;\r | |
251 | UINT32 InData[5];\r | |
252 | \r | |
253 | switch (CommandCode) {\r | |
607599bf | 254 | case PHYSICAL_PRESENCE_ENABLE:\r |
0c18794e | 255 | return TpmCommandNoReturnData (\r |
256 | TcgProtocol,\r | |
257 | TPM_ORD_PhysicalEnable,\r | |
258 | 0,\r | |
259 | NULL\r | |
260 | );\r | |
261 | \r | |
607599bf | 262 | case PHYSICAL_PRESENCE_DISABLE:\r |
0c18794e | 263 | return TpmCommandNoReturnData (\r |
264 | TcgProtocol,\r | |
265 | TPM_ORD_PhysicalDisable,\r | |
266 | 0,\r | |
267 | NULL\r | |
268 | );\r | |
269 | \r | |
607599bf | 270 | case PHYSICAL_PRESENCE_ACTIVATE:\r |
0c18794e | 271 | BoolVal = FALSE;\r |
272 | return TpmCommandNoReturnData (\r | |
273 | TcgProtocol,\r | |
274 | TPM_ORD_PhysicalSetDeactivated,\r | |
275 | sizeof (BoolVal),\r | |
276 | &BoolVal\r | |
277 | );\r | |
278 | \r | |
607599bf | 279 | case PHYSICAL_PRESENCE_DEACTIVATE:\r |
0c18794e | 280 | BoolVal = TRUE;\r |
281 | return TpmCommandNoReturnData (\r | |
282 | TcgProtocol,\r | |
283 | TPM_ORD_PhysicalSetDeactivated,\r | |
284 | sizeof (BoolVal),\r | |
285 | &BoolVal\r | |
286 | );\r | |
287 | \r | |
607599bf | 288 | case PHYSICAL_PRESENCE_CLEAR:\r |
0c18794e | 289 | return TpmCommandNoReturnData (\r |
290 | TcgProtocol,\r | |
291 | TPM_ORD_ForceClear,\r | |
292 | 0,\r | |
293 | NULL\r | |
294 | );\r | |
295 | \r | |
607599bf | 296 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r |
297 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE, PpiFlags);\r | |
0c18794e | 298 | if (TpmResponse == 0) {\r |
607599bf | 299 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ACTIVATE, PpiFlags);\r |
0c18794e | 300 | }\r |
301 | return TpmResponse;\r | |
302 | \r | |
607599bf | 303 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r |
304 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DEACTIVATE, PpiFlags);\r | |
0c18794e | 305 | if (TpmResponse == 0) {\r |
607599bf | 306 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DISABLE, PpiFlags);\r |
0c18794e | 307 | }\r |
308 | return TpmResponse;\r | |
309 | \r | |
607599bf | 310 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r |
0c18794e | 311 | BoolVal = TRUE;\r |
312 | return TpmCommandNoReturnData (\r | |
313 | TcgProtocol,\r | |
314 | TPM_ORD_SetOwnerInstall,\r | |
315 | sizeof (BoolVal),\r | |
316 | &BoolVal\r | |
317 | );\r | |
318 | \r | |
607599bf | 319 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r |
0c18794e | 320 | BoolVal = FALSE;\r |
321 | return TpmCommandNoReturnData (\r | |
322 | TcgProtocol,\r | |
323 | TPM_ORD_SetOwnerInstall,\r | |
324 | sizeof (BoolVal),\r | |
325 | &BoolVal\r | |
326 | );\r | |
327 | \r | |
607599bf | 328 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r |
0c18794e | 329 | //\r |
607599bf | 330 | // PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE\r |
331 | // PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE will be executed after reboot\r | |
0c18794e | 332 | //\r |
333 | if ((*PpiFlags & FLAG_RESET_TRACK) == 0) {\r | |
607599bf | 334 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r |
0c18794e | 335 | *PpiFlags |= FLAG_RESET_TRACK;\r |
336 | } else {\r | |
607599bf | 337 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE, PpiFlags);\r |
0c18794e | 338 | *PpiFlags &= ~FLAG_RESET_TRACK;\r |
339 | }\r | |
340 | return TpmResponse;\r | |
341 | \r | |
607599bf | 342 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r |
343 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE, PpiFlags);\r | |
0c18794e | 344 | if (TpmResponse == 0) {\r |
607599bf | 345 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_DEACTIVATE_DISABLE, PpiFlags);\r |
0c18794e | 346 | }\r |
347 | return TpmResponse;\r | |
348 | \r | |
607599bf | 349 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r |
350 | InData[0] = SwapBytes32 (TPM_SET_STCLEAR_DATA); // CapabilityArea\r | |
351 | InData[1] = SwapBytes32 (sizeof(UINT32)); // SubCapSize\r | |
352 | InData[2] = SwapBytes32 (TPM_SD_DEFERREDPHYSICALPRESENCE); // SubCap\r | |
353 | InData[3] = SwapBytes32 (sizeof(UINT32)); // SetValueSize\r | |
354 | InData[4] = SwapBytes32 (1); // UnownedFieldUpgrade; bit0\r | |
0c18794e | 355 | return TpmCommandNoReturnData (\r |
356 | TcgProtocol,\r | |
357 | TPM_ORD_SetCapability,\r | |
358 | sizeof (UINT32) * 5,\r | |
359 | InData\r | |
360 | );\r | |
361 | \r | |
607599bf | 362 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r |
0c18794e | 363 | //\r |
364 | // TPM_SetOperatorAuth\r | |
365 | // This command requires UI to prompt user for Auth data\r | |
366 | // Here it is NOT implemented\r | |
367 | //\r | |
368 | return TPM_PP_BIOS_FAILURE;\r | |
369 | \r | |
607599bf | 370 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r |
371 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR, PpiFlags);\r | |
0c18794e | 372 | if (TpmResponse == 0) {\r |
607599bf | 373 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r |
0c18794e | 374 | }\r |
375 | return TpmResponse;\r | |
376 | \r | |
607599bf | 377 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:\r |
0c18794e | 378 | *PpiFlags &= ~FLAG_NO_PPI_PROVISION;\r |
379 | return 0;\r | |
380 | \r | |
607599bf | 381 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:\r |
0c18794e | 382 | *PpiFlags |= FLAG_NO_PPI_PROVISION;\r |
383 | return 0;\r | |
384 | \r | |
607599bf | 385 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:\r |
0c18794e | 386 | *PpiFlags &= ~FLAG_NO_PPI_CLEAR;\r |
387 | return 0;\r | |
388 | \r | |
607599bf | 389 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:\r |
0c18794e | 390 | *PpiFlags |= FLAG_NO_PPI_CLEAR;\r |
391 | return 0;\r | |
392 | \r | |
607599bf | 393 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:\r |
0c18794e | 394 | *PpiFlags &= ~FLAG_NO_PPI_MAINTENANCE;\r |
395 | return 0;\r | |
396 | \r | |
607599bf | 397 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:\r |
0c18794e | 398 | *PpiFlags |= FLAG_NO_PPI_MAINTENANCE;\r |
399 | return 0;\r | |
400 | \r | |
607599bf | 401 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r |
1f728ac7 | 402 | //\r |
403 | // PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_CLEAR\r | |
404 | // PHYSICAL_PRESENCE_CLEAR will be executed after reboot.\r | |
405 | //\r | |
406 | if ((*PpiFlags & FLAG_RESET_TRACK) == 0) {\r | |
407 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r | |
408 | *PpiFlags |= FLAG_RESET_TRACK;\r | |
409 | } else {\r | |
607599bf | 410 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR, PpiFlags);\r |
1f728ac7 | 411 | *PpiFlags &= ~FLAG_RESET_TRACK;\r |
0c18794e | 412 | }\r |
413 | return TpmResponse;\r | |
414 | \r | |
607599bf | 415 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r |
0c18794e | 416 | //\r |
607599bf | 417 | // PHYSICAL_PRESENCE_ENABLE_ACTIVATE + PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE\r |
1f728ac7 | 418 | // PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE will be executed after reboot.\r |
0c18794e | 419 | //\r |
420 | if ((*PpiFlags & FLAG_RESET_TRACK) == 0) {\r | |
607599bf | 421 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_ENABLE_ACTIVATE, PpiFlags);\r |
0c18794e | 422 | *PpiFlags |= FLAG_RESET_TRACK;\r |
423 | } else {\r | |
607599bf | 424 | TpmResponse = ExecutePhysicalPresence (TcgProtocol, PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE, PpiFlags);\r |
0c18794e | 425 | *PpiFlags &= ~FLAG_RESET_TRACK;\r |
426 | } \r | |
427 | return TpmResponse;\r | |
428 | \r | |
429 | default:\r | |
430 | ;\r | |
431 | }\r | |
432 | return TPM_PP_BIOS_FAILURE;\r | |
433 | }\r | |
434 | \r | |
435 | \r | |
436 | /**\r | |
437 | Read the specified key for user confirmation.\r | |
438 | \r | |
439 | @param[in] CautionKey If true, F12 is used as confirm key;\r | |
440 | If false, F10 is used as confirm key.\r | |
441 | \r | |
442 | @retval TRUE User confirmed the changes by input.\r | |
48211402 | 443 | @retval FALSE User discarded the changes or device error.\r |
0c18794e | 444 | \r |
445 | **/\r | |
446 | BOOLEAN\r | |
447 | ReadUserKey (\r | |
448 | IN BOOLEAN CautionKey\r | |
449 | )\r | |
450 | {\r | |
451 | EFI_STATUS Status;\r | |
452 | EFI_INPUT_KEY Key;\r | |
453 | UINT16 InputKey;\r | |
48211402 | 454 | UINTN Index;\r |
455 | \r | |
0c18794e | 456 | InputKey = 0; \r |
457 | do {\r | |
48211402 | 458 | Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);\r |
459 | if (Status == EFI_NOT_READY) {\r | |
460 | gBS->WaitForEvent (1, &gST->ConIn->WaitForKey, &Index);\r | |
461 | continue;\r | |
462 | }\r | |
463 | \r | |
464 | if (Status == EFI_DEVICE_ERROR) {\r | |
465 | return FALSE;\r | |
466 | }\r | |
467 | \r | |
468 | if (Key.ScanCode == SCAN_ESC) {\r | |
469 | InputKey = Key.ScanCode;\r | |
470 | }\r | |
471 | if ((Key.ScanCode == SCAN_F10) && !CautionKey) {\r | |
472 | InputKey = Key.ScanCode;\r | |
473 | }\r | |
474 | if ((Key.ScanCode == SCAN_F12) && CautionKey) {\r | |
475 | InputKey = Key.ScanCode;\r | |
476 | }\r | |
0c18794e | 477 | } while (InputKey == 0);\r |
478 | \r | |
0c18794e | 479 | if (InputKey != SCAN_ESC) {\r |
480 | return TRUE;\r | |
481 | }\r | |
482 | \r | |
483 | return FALSE;\r | |
484 | }\r | |
485 | \r | |
607599bf | 486 | /**\r |
487 | The constructor function register UNI strings into imageHandle.\r | |
488 | \r | |
489 | It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r | |
490 | \r | |
491 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
492 | @param SystemTable A pointer to the EFI System Table.\r | |
493 | \r | |
494 | @retval EFI_SUCCESS The constructor successfully added string package.\r | |
495 | @retval Other value The constructor can't add string package.\r | |
496 | \r | |
497 | **/\r | |
498 | EFI_STATUS\r | |
499 | EFIAPI\r | |
500 | TcgPhysicalPresenceLibConstructor (\r | |
501 | IN EFI_HANDLE ImageHandle,\r | |
502 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
503 | )\r | |
504 | {\r | |
6f0b8648 | 505 | mPpStringPackHandle = HiiAddPackages (&gEfiPhysicalPresenceGuid, ImageHandle, DxeTcgPhysicalPresenceLibStrings, NULL);\r |
607599bf | 506 | ASSERT (mPpStringPackHandle != NULL);\r |
507 | \r | |
508 | return EFI_SUCCESS;\r | |
509 | }\r | |
510 | \r | |
0c18794e | 511 | /**\r |
512 | Display the confirm text and get user confirmation.\r | |
513 | \r | |
514 | @param[in] TpmPpCommand The requested TPM physical presence command.\r | |
515 | \r | |
607599bf | 516 | @retval TRUE The user has confirmed the changes.\r |
517 | @retval FALSE The user doesn't confirm the changes.\r | |
0c18794e | 518 | **/\r |
519 | BOOLEAN\r | |
520 | UserConfirm (\r | |
521 | IN UINT8 TpmPpCommand\r | |
522 | )\r | |
523 | {\r | |
524 | CHAR16 *ConfirmText;\r | |
525 | CHAR16 *TmpStr1;\r | |
526 | CHAR16 *TmpStr2; \r | |
527 | UINTN BufSize;\r | |
528 | BOOLEAN CautionKey;\r | |
529 | UINT16 Index;\r | |
530 | CHAR16 DstStr[81];\r | |
531 | \r | |
532 | TmpStr2 = NULL;\r | |
533 | CautionKey = FALSE;\r | |
534 | BufSize = CONFIRM_BUFFER_SIZE;\r | |
535 | ConfirmText = AllocateZeroPool (BufSize);\r | |
536 | ASSERT (ConfirmText != NULL);\r | |
537 | \r | |
0c18794e | 538 | switch (TpmPpCommand) {\r |
607599bf | 539 | case PHYSICAL_PRESENCE_ENABLE:\r |
540 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE));\r | |
0c18794e | 541 | \r |
607599bf | 542 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 543 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
544 | FreePool (TmpStr1);\r | |
545 | \r | |
607599bf | 546 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 547 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
548 | FreePool (TmpStr1);\r | |
549 | break;\r | |
550 | \r | |
607599bf | 551 | case PHYSICAL_PRESENCE_DISABLE:\r |
552 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DISABLE));\r | |
0c18794e | 553 | \r |
607599bf | 554 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 555 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
556 | FreePool (TmpStr1);\r | |
557 | \r | |
607599bf | 558 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r |
0c18794e | 559 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
560 | FreePool (TmpStr1);\r | |
561 | \r | |
607599bf | 562 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 563 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
564 | FreePool (TmpStr1);\r | |
565 | break;\r | |
566 | \r | |
607599bf | 567 | case PHYSICAL_PRESENCE_ACTIVATE:\r |
568 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACTIVATE));\r | |
0c18794e | 569 | \r |
607599bf | 570 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 571 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
572 | FreePool (TmpStr1);\r | |
573 | \r | |
607599bf | 574 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 575 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
576 | FreePool (TmpStr1);\r | |
577 | break;\r | |
578 | \r | |
607599bf | 579 | case PHYSICAL_PRESENCE_DEACTIVATE:\r |
580 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DEACTIVATE));\r | |
0c18794e | 581 | \r |
607599bf | 582 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 583 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
584 | FreePool (TmpStr1);\r | |
585 | \r | |
607599bf | 586 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r |
0c18794e | 587 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
588 | FreePool (TmpStr1);\r | |
589 | \r | |
607599bf | 590 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 591 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
592 | FreePool (TmpStr1); \r | |
593 | break;\r | |
594 | \r | |
607599bf | 595 | case PHYSICAL_PRESENCE_CLEAR:\r |
0c18794e | 596 | CautionKey = TRUE;\r |
607599bf | 597 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r |
0c18794e | 598 | \r |
607599bf | 599 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 600 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
601 | FreePool (TmpStr1);\r | |
602 | \r | |
607599bf | 603 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r |
0c18794e | 604 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
605 | StrnCat (ConfirmText, L" \n\n", (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
606 | FreePool (TmpStr1); \r | |
607 | \r | |
607599bf | 608 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 609 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
610 | FreePool (TmpStr1);\r | |
611 | break;\r | |
612 | \r | |
607599bf | 613 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r |
614 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE));\r | |
0c18794e | 615 | \r |
607599bf | 616 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 617 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
618 | FreePool (TmpStr1);\r | |
619 | \r | |
607599bf | 620 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r |
0c18794e | 621 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
622 | FreePool (TmpStr1);\r | |
623 | \r | |
607599bf | 624 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 625 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
626 | FreePool (TmpStr1);\r | |
627 | break;\r | |
628 | \r | |
607599bf | 629 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r |
630 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DEACTIVATE_DISABLE));\r | |
0c18794e | 631 | \r |
607599bf | 632 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r |
0c18794e | 633 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
634 | FreePool (TmpStr1);\r | |
635 | \r | |
607599bf | 636 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_OFF));\r |
0c18794e | 637 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
638 | FreePool (TmpStr1);\r | |
639 | \r | |
607599bf | 640 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r |
0c18794e | 641 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
642 | FreePool (TmpStr1);\r | |
643 | \r | |
607599bf | 644 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 645 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
646 | FreePool (TmpStr1);\r | |
647 | break;\r | |
648 | \r | |
607599bf | 649 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r |
650 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ALLOW_TAKE_OWNERSHIP));\r | |
0c18794e | 651 | \r |
607599bf | 652 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r |
0c18794e | 653 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
654 | FreePool (TmpStr1);\r | |
655 | \r | |
607599bf | 656 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 657 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
658 | FreePool (TmpStr1);\r | |
659 | break;\r | |
660 | \r | |
607599bf | 661 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r |
662 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_DISALLOW_TAKE_OWNERSHIP));\r | |
0c18794e | 663 | \r |
607599bf | 664 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r |
0c18794e | 665 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
666 | FreePool (TmpStr1);\r | |
667 | \r | |
607599bf | 668 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 669 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
670 | FreePool (TmpStr1);\r | |
671 | break;\r | |
672 | \r | |
607599bf | 673 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r |
674 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_TURN_ON));\r | |
0c18794e | 675 | \r |
607599bf | 676 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 677 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
678 | FreePool (TmpStr1);\r | |
679 | \r | |
607599bf | 680 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r |
0c18794e | 681 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
682 | FreePool (TmpStr1);\r | |
683 | \r | |
607599bf | 684 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 685 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
686 | FreePool (TmpStr1);\r | |
687 | break;\r | |
688 | \r | |
607599bf | 689 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r |
690 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_TURN_OFF));\r | |
0c18794e | 691 | \r |
607599bf | 692 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR)); \r |
0c18794e | 693 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
694 | FreePool (TmpStr1);\r | |
695 | \r | |
607599bf | 696 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_OFF));\r |
0c18794e | 697 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
698 | FreePool (TmpStr1);\r | |
699 | \r | |
607599bf | 700 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING));\r |
0c18794e | 701 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
702 | FreePool (TmpStr1);\r | |
703 | \r | |
607599bf | 704 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 705 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
706 | FreePool (TmpStr1);\r | |
707 | break;\r | |
708 | \r | |
607599bf | 709 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r |
0c18794e | 710 | CautionKey = TRUE;\r |
607599bf | 711 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_UNOWNED_FIELD_UPGRADE));\r |
0c18794e | 712 | \r |
607599bf | 713 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_UPGRADE_HEAD_STR)); \r |
0c18794e | 714 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
715 | FreePool (TmpStr1);\r | |
716 | \r | |
607599bf | 717 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_MAINTAIN));\r |
0c18794e | 718 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
719 | FreePool (TmpStr1);\r | |
720 | \r | |
607599bf | 721 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 722 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
723 | FreePool (TmpStr1);\r | |
724 | break;\r | |
725 | \r | |
607599bf | 726 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r |
0c18794e | 727 | //\r |
728 | // TPM_SetOperatorAuth\r | |
729 | // This command requires UI to prompt user for Auth data\r | |
730 | // Here it is NOT implemented\r | |
731 | //\r | |
732 | break;\r | |
733 | \r | |
607599bf | 734 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r |
0c18794e | 735 | CautionKey = TRUE;\r |
607599bf | 736 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR_TURN_ON));\r |
0c18794e | 737 | \r |
607599bf | 738 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 739 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
740 | FreePool (TmpStr1);\r | |
741 | \r | |
607599bf | 742 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r |
0c18794e | 743 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
744 | FreePool (TmpStr1);\r | |
745 | \r | |
607599bf | 746 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r |
0c18794e | 747 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
748 | FreePool (TmpStr1);\r | |
749 | \r | |
607599bf | 750 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR_CONT));\r |
0c18794e | 751 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
752 | FreePool (TmpStr1);\r | |
753 | \r | |
607599bf | 754 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 755 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
756 | FreePool (TmpStr1);\r | |
757 | break;\r | |
758 | \r | |
607599bf | 759 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:\r |
760 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_PROVISION));\r | |
0c18794e | 761 | \r |
607599bf | 762 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r |
0c18794e | 763 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
764 | FreePool (TmpStr1);\r | |
765 | \r | |
607599bf | 766 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r |
0c18794e | 767 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
768 | FreePool (TmpStr1);\r | |
769 | \r | |
607599bf | 770 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r |
0c18794e | 771 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
772 | FreePool (TmpStr1);\r | |
773 | break;\r | |
774 | \r | |
607599bf | 775 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:\r |
0c18794e | 776 | CautionKey = TRUE;\r |
607599bf | 777 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r |
0c18794e | 778 | \r |
607599bf | 779 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r |
0c18794e | 780 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
781 | FreePool (TmpStr1);\r | |
782 | \r | |
607599bf | 783 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_CLEAR));\r |
0c18794e | 784 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
785 | FreePool (TmpStr1);\r | |
786 | \r | |
607599bf | 787 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r |
0c18794e | 788 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
789 | StrnCat (ConfirmText, L" \n\n", (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
790 | FreePool (TmpStr1); \r | |
791 | \r | |
607599bf | 792 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 793 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
794 | FreePool (TmpStr1);\r | |
795 | \r | |
607599bf | 796 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r |
0c18794e | 797 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
798 | FreePool (TmpStr1);\r | |
799 | break;\r | |
800 | \r | |
607599bf | 801 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:\r |
0c18794e | 802 | CautionKey = TRUE;\r |
607599bf | 803 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_MAINTAIN));\r |
0c18794e | 804 | \r |
607599bf | 805 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r |
0c18794e | 806 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
807 | FreePool (TmpStr1);\r | |
808 | \r | |
607599bf | 809 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_MAINTAIN));\r |
0c18794e | 810 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
811 | FreePool (TmpStr1);\r | |
812 | \r | |
607599bf | 813 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 814 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
815 | FreePool (TmpStr1);\r | |
816 | \r | |
607599bf | 817 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r |
0c18794e | 818 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
819 | FreePool (TmpStr1);\r | |
820 | break;\r | |
821 | \r | |
607599bf | 822 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r |
0c18794e | 823 | CautionKey = TRUE;\r |
607599bf | 824 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE_CLEAR));\r |
0c18794e | 825 | \r |
607599bf | 826 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 827 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
828 | FreePool (TmpStr1);\r | |
829 | \r | |
607599bf | 830 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r |
0c18794e | 831 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
832 | StrnCat (ConfirmText, L" \n\n", (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r | |
833 | FreePool (TmpStr1);\r | |
834 | \r | |
607599bf | 835 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 836 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
837 | FreePool (TmpStr1);\r | |
838 | break;\r | |
839 | \r | |
607599bf | 840 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r |
0c18794e | 841 | CautionKey = TRUE;\r |
607599bf | 842 | TmpStr2 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE));\r |
0c18794e | 843 | \r |
607599bf | 844 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r |
0c18794e | 845 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r |
846 | FreePool (TmpStr1);\r | |
847 | \r | |
607599bf | 848 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_ON));\r |
0c18794e | 849 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
850 | FreePool (TmpStr1);\r | |
851 | \r | |
607599bf | 852 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r |
0c18794e | 853 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
854 | FreePool (TmpStr1);\r | |
855 | \r | |
607599bf | 856 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR_CONT));\r |
0c18794e | 857 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
858 | FreePool (TmpStr1);\r | |
859 | \r | |
607599bf | 860 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r |
0c18794e | 861 | StrnCat (ConfirmText, TmpStr1, (BufSize / sizeof (CHAR16 *)) - StrLen (ConfirmText) - 1);\r |
862 | FreePool (TmpStr1);\r | |
863 | break;\r | |
864 | \r | |
865 | default:\r | |
866 | ;\r | |
867 | }\r | |
868 | \r | |
869 | if (TmpStr2 == NULL) {\r | |
870 | FreePool (ConfirmText);\r | |
871 | return FALSE;\r | |
872 | }\r | |
873 | \r | |
607599bf | 874 | TmpStr1 = PhysicalPresenceGetStringById (STRING_TOKEN (TPM_REJECT_KEY));\r |
0c18794e | 875 | BufSize -= StrSize (ConfirmText);\r |
876 | UnicodeSPrint (ConfirmText + StrLen (ConfirmText), BufSize, TmpStr1, TmpStr2);\r | |
877 | \r | |
878 | DstStr[80] = L'\0';\r | |
879 | for (Index = 0; Index < StrLen (ConfirmText); Index += 80) {\r | |
880 | StrnCpy(DstStr, ConfirmText + Index, 80); \r | |
881 | Print (DstStr); \r | |
882 | }\r | |
883 | \r | |
884 | FreePool (TmpStr1);\r | |
885 | FreePool (TmpStr2);\r | |
886 | FreePool (ConfirmText);\r | |
887 | \r | |
888 | if (ReadUserKey (CautionKey)) {\r | |
889 | return TRUE;\r | |
890 | }\r | |
891 | \r | |
892 | return FALSE; \r | |
893 | }\r | |
894 | \r | |
895 | /**\r | |
48211402 | 896 | Check if there is a valid physical presence command request. Also updates parameter value \r |
897 | to whether the requested physical presence command already confirmed by user\r | |
898 | \r | |
8c3883b6 | 899 | @param[in] TcgPpData EFI TCG Physical Presence request data. \r |
48211402 | 900 | @param[out] RequestConfirmed If the physical presence operation command required user confirm from UI.\r |
901 | True, it indicates the command doesn't require user confirm, or already confirmed \r | |
902 | in last boot cycle by user.\r | |
903 | False, it indicates the command need user confirm from UI.\r | |
904 | \r | |
905 | @retval TRUE Physical Presence operation command is valid.\r | |
906 | @retval FALSE Physical Presence operation command is invalid.\r | |
0c18794e | 907 | \r |
908 | **/\r | |
48211402 | 909 | BOOLEAN\r |
910 | HaveValidTpmRequest (\r | |
911 | IN EFI_PHYSICAL_PRESENCE *TcgPpData,\r | |
912 | OUT BOOLEAN *RequestConfirmed\r | |
0c18794e | 913 | )\r |
914 | {\r | |
0c18794e | 915 | UINT8 Flags;\r |
48211402 | 916 | \r |
917 | Flags = TcgPpData->Flags;\r | |
918 | *RequestConfirmed = FALSE;\r | |
0c18794e | 919 | \r |
0c18794e | 920 | switch (TcgPpData->PPRequest) {\r |
607599bf | 921 | case PHYSICAL_PRESENCE_NO_ACTION:\r |
48211402 | 922 | *RequestConfirmed = TRUE;\r |
923 | return TRUE;\r | |
607599bf | 924 | case PHYSICAL_PRESENCE_ENABLE:\r |
925 | case PHYSICAL_PRESENCE_DISABLE:\r | |
926 | case PHYSICAL_PRESENCE_ACTIVATE:\r | |
927 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
928 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
929 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
930 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_TRUE:\r | |
931 | case PHYSICAL_PRESENCE_SET_OWNER_INSTALL_FALSE:\r | |
932 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
933 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
934 | case PHYSICAL_PRESENCE_SET_OPERATOR_AUTH:\r | |
0c18794e | 935 | if ((Flags & FLAG_NO_PPI_PROVISION) != 0) {\r |
48211402 | 936 | *RequestConfirmed = TRUE;\r |
0c18794e | 937 | }\r |
938 | break;\r | |
939 | \r | |
607599bf | 940 | case PHYSICAL_PRESENCE_CLEAR:\r |
941 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
0c18794e | 942 | if ((Flags & FLAG_NO_PPI_CLEAR) != 0) {\r |
48211402 | 943 | *RequestConfirmed = TRUE;\r |
0c18794e | 944 | }\r |
945 | break;\r | |
946 | \r | |
607599bf | 947 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r |
0c18794e | 948 | if ((Flags & FLAG_NO_PPI_MAINTENANCE) != 0) {\r |
48211402 | 949 | *RequestConfirmed = TRUE;\r |
0c18794e | 950 | }\r |
951 | break;\r | |
952 | \r | |
607599bf | 953 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r |
954 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE:\r | |
0c18794e | 955 | if ((Flags & FLAG_NO_PPI_CLEAR) != 0 && (Flags & FLAG_NO_PPI_PROVISION) != 0) {\r |
48211402 | 956 | *RequestConfirmed = TRUE;\r |
0c18794e | 957 | }\r |
48211402 | 958 | break;\r |
0c18794e | 959 | \r |
607599bf | 960 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_FALSE:\r |
961 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE:\r | |
962 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_FALSE:\r | |
48211402 | 963 | *RequestConfirmed = TRUE;\r |
0c18794e | 964 | break;\r |
48211402 | 965 | \r |
477be7c4 | 966 | case PHYSICAL_PRESENCE_SET_NO_PPI_PROVISION_TRUE:\r |
967 | case PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE:\r | |
968 | case PHYSICAL_PRESENCE_SET_NO_PPI_MAINTENANCE_TRUE:\r | |
969 | break;\r | |
48211402 | 970 | \r |
568e7b27 | 971 | default:\r |
972 | //\r | |
48211402 | 973 | // Wrong Physical Presence command\r |
568e7b27 | 974 | //\r |
48211402 | 975 | return FALSE;\r |
0c18794e | 976 | }\r |
977 | \r | |
978 | if ((Flags & FLAG_RESET_TRACK) != 0) {\r | |
979 | //\r | |
980 | // It had been confirmed in last boot, it doesn't need confirm again.\r | |
981 | //\r | |
48211402 | 982 | *RequestConfirmed = TRUE;\r |
983 | }\r | |
984 | \r | |
985 | //\r | |
986 | // Physical Presence command is correct\r | |
987 | //\r | |
988 | return TRUE;\r | |
989 | }\r | |
990 | \r | |
991 | \r | |
992 | /**\r | |
993 | Check and execute the requested physical presence command.\r | |
994 | \r | |
995 | Caution: This function may receive untrusted input.\r | |
996 | TcgPpData variable is external input, so this function will validate\r | |
997 | its data structure to be valid value.\r | |
998 | \r | |
999 | @param[in] TcgProtocol EFI TCG Protocol instance. \r | |
1000 | @param[in] TcgPpData Point to the physical presence NV variable.\r | |
1001 | \r | |
1002 | **/\r | |
1003 | VOID\r | |
1004 | ExecutePendingTpmRequest (\r | |
1005 | IN EFI_TCG_PROTOCOL *TcgProtocol,\r | |
1006 | IN EFI_PHYSICAL_PRESENCE *TcgPpData\r | |
1007 | )\r | |
1008 | {\r | |
1009 | EFI_STATUS Status;\r | |
1010 | UINTN DataSize;\r | |
1011 | BOOLEAN RequestConfirmed;\r | |
1012 | \r | |
48211402 | 1013 | if (!HaveValidTpmRequest(TcgPpData, &RequestConfirmed)) {\r |
1014 | //\r | |
1015 | // Invalid operation request.\r | |
1016 | //\r | |
1017 | TcgPpData->PPResponse = TPM_PP_BIOS_FAILURE;\r | |
1018 | TcgPpData->LastPPRequest = TcgPpData->PPRequest;\r | |
1019 | TcgPpData->PPRequest = PHYSICAL_PRESENCE_NO_ACTION;\r | |
1020 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1021 | Status = gRT->SetVariable (\r | |
1022 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1023 | &gEfiPhysicalPresenceGuid,\r | |
1024 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1025 | DataSize,\r | |
1026 | TcgPpData\r | |
1027 | );\r | |
1028 | return;\r | |
0c18794e | 1029 | }\r |
1030 | \r | |
1031 | if (!RequestConfirmed) {\r | |
1032 | //\r | |
1033 | // Print confirm text and wait for approval. \r | |
1034 | //\r | |
1035 | RequestConfirmed = UserConfirm (TcgPpData->PPRequest);\r | |
1036 | }\r | |
1037 | \r | |
1038 | //\r | |
607599bf | 1039 | // Execute requested physical presence command\r |
0c18794e | 1040 | //\r |
1041 | TcgPpData->PPResponse = TPM_PP_USER_ABORT;\r | |
1042 | if (RequestConfirmed) {\r | |
0c18794e | 1043 | TcgPpData->PPResponse = ExecutePhysicalPresence (TcgProtocol, TcgPpData->PPRequest, &TcgPpData->Flags);\r |
1044 | }\r | |
1045 | \r | |
1046 | //\r | |
1047 | // Clear request\r | |
1048 | //\r | |
1049 | if ((TcgPpData->Flags & FLAG_RESET_TRACK) == 0) {\r | |
1050 | TcgPpData->LastPPRequest = TcgPpData->PPRequest;\r | |
568e7b27 | 1051 | TcgPpData->PPRequest = PHYSICAL_PRESENCE_NO_ACTION; \r |
0c18794e | 1052 | }\r |
1053 | \r | |
1054 | //\r | |
1055 | // Save changes\r | |
1056 | //\r | |
1057 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1058 | Status = gRT->SetVariable (\r | |
1059 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1060 | &gEfiPhysicalPresenceGuid,\r | |
1061 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1062 | DataSize,\r | |
1063 | TcgPpData\r | |
1064 | );\r | |
1065 | if (EFI_ERROR (Status)) {\r | |
1066 | return;\r | |
1067 | }\r | |
1068 | \r | |
1069 | if (TcgPpData->PPResponse == TPM_PP_USER_ABORT) {\r | |
1070 | return;\r | |
1071 | }\r | |
1072 | \r | |
1073 | //\r | |
1074 | // Reset system to make new TPM settings in effect\r | |
1075 | //\r | |
1076 | switch (TcgPpData->LastPPRequest) {\r | |
607599bf | 1077 | case PHYSICAL_PRESENCE_ACTIVATE:\r |
1078 | case PHYSICAL_PRESENCE_DEACTIVATE:\r | |
1079 | case PHYSICAL_PRESENCE_CLEAR:\r | |
1080 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE:\r | |
1081 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE:\r | |
1082 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_OWNER_TRUE:\r | |
1083 | case PHYSICAL_PRESENCE_DEACTIVATE_DISABLE_OWNER_FALSE:\r | |
1084 | case PHYSICAL_PRESENCE_DEFERRED_PP_UNOWNERED_FIELD_UPGRADE:\r | |
1085 | case PHYSICAL_PRESENCE_CLEAR_ENABLE_ACTIVATE:\r | |
1086 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR:\r | |
1087 | case PHYSICAL_PRESENCE_ENABLE_ACTIVATE_CLEAR_ENABLE_ACTIVATE: \r | |
0c18794e | 1088 | break;\r |
1089 | default:\r | |
568e7b27 | 1090 | if (TcgPpData->PPRequest != PHYSICAL_PRESENCE_NO_ACTION) {\r |
0c18794e | 1091 | break;\r |
1092 | }\r | |
1093 | return;\r | |
1094 | }\r | |
1095 | \r | |
1096 | Print (L"Rebooting system to make TPM settings in effect\n");\r | |
1097 | gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);\r | |
1098 | ASSERT (FALSE); \r | |
1099 | }\r | |
1100 | \r | |
1101 | /**\r | |
607599bf | 1102 | Check and execute the pending TPM request and Lock TPM.\r |
0c18794e | 1103 | \r |
607599bf | 1104 | The TPM request may come from OS or BIOS. This API will display request information and wait \r |
1105 | for user confirmation if TPM request exists. The TPM request will be sent to TPM device after\r | |
1106 | the TPM request is confirmed, and one or more reset may be required to make TPM request to \r | |
1107 | take effect. At last, it will lock TPM to prevent TPM state change by malware.\r | |
1108 | \r | |
1109 | This API should be invoked after console in and console out are all ready as they are required\r | |
1110 | to display request information and get user input to confirm the request. This API should also \r | |
1111 | be invoked as early as possible as TPM is locked in this function.\r | |
1112 | \r | |
0c18794e | 1113 | **/\r |
1114 | VOID\r | |
1115 | EFIAPI\r | |
607599bf | 1116 | TcgPhysicalPresenceLibProcessRequest (\r |
1117 | VOID\r | |
0c18794e | 1118 | )\r |
1119 | {\r | |
1120 | EFI_STATUS Status;\r | |
1121 | BOOLEAN LifetimeLock;\r | |
1122 | BOOLEAN CmdEnable;\r | |
1123 | UINTN DataSize;\r | |
1124 | EFI_PHYSICAL_PRESENCE TcgPpData;\r | |
607599bf | 1125 | EFI_TCG_PROTOCOL *TcgProtocol;\r |
1126 | \r | |
1127 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);\r | |
1128 | if (EFI_ERROR (Status)) {\r | |
1129 | return ;\r | |
1130 | }\r | |
0c18794e | 1131 | \r |
1132 | //\r | |
607599bf | 1133 | // Initialize physical presence variable.\r |
0c18794e | 1134 | //\r |
1135 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1136 | Status = gRT->GetVariable (\r | |
1137 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1138 | &gEfiPhysicalPresenceGuid,\r | |
1139 | NULL,\r | |
1140 | &DataSize,\r | |
1141 | &TcgPpData\r | |
1142 | );\r | |
607599bf | 1143 | if (EFI_ERROR (Status)) {\r |
1144 | if (Status == EFI_NOT_FOUND) {\r | |
1145 | ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));\r | |
1146 | TcgPpData.Flags |= FLAG_NO_PPI_PROVISION;\r | |
1147 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1148 | Status = gRT->SetVariable (\r | |
1149 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1150 | &gEfiPhysicalPresenceGuid,\r | |
1151 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1152 | DataSize,\r | |
1153 | &TcgPpData\r | |
1154 | );\r | |
1155 | }\r | |
1156 | ASSERT_EFI_ERROR (Status);\r | |
1157 | }\r | |
1158 | \r | |
0c18794e | 1159 | DEBUG ((EFI_D_INFO, "[TPM] Flags=%x, PPRequest=%x\n", TcgPpData.Flags, TcgPpData.PPRequest));\r |
607599bf | 1160 | \r |
03ecb576 | 1161 | if (TcgPpData.PPRequest == PHYSICAL_PRESENCE_NO_ACTION) {\r |
1162 | //\r | |
1163 | // No operation request\r | |
1164 | //\r | |
1165 | return;\r | |
1166 | }\r | |
1167 | \r | |
607599bf | 1168 | Status = GetTpmCapability (TcgProtocol, &LifetimeLock, &CmdEnable);\r |
0c18794e | 1169 | if (EFI_ERROR (Status)) {\r |
1170 | return ;\r | |
1171 | }\r | |
607599bf | 1172 | \r |
0c18794e | 1173 | if (!CmdEnable) {\r |
1174 | if (LifetimeLock) {\r | |
1175 | //\r | |
1176 | // physicalPresenceCMDEnable is locked, can't execute physical presence command.\r | |
1177 | //\r | |
1178 | return ;\r | |
1179 | }\r | |
607599bf | 1180 | Status = TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_CMD_ENABLE);\r |
0c18794e | 1181 | if (EFI_ERROR (Status)) {\r |
1182 | return ;\r | |
1183 | }\r | |
1184 | }\r | |
607599bf | 1185 | \r |
0c18794e | 1186 | //\r |
1187 | // Set operator physical presence flags\r | |
1188 | //\r | |
607599bf | 1189 | TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_PRESENT);\r |
1190 | \r | |
0c18794e | 1191 | //\r |
1192 | // Execute pending TPM request.\r | |
1193 | // \r | |
607599bf | 1194 | ExecutePendingTpmRequest (TcgProtocol, &TcgPpData);\r |
0c18794e | 1195 | DEBUG ((EFI_D_INFO, "[TPM] PPResponse = %x\n", TcgPpData.PPResponse));\r |
1196 | \r | |
1197 | //\r | |
1198 | // Lock physical presence.\r | |
1199 | //\r | |
607599bf | 1200 | TpmPhysicalPresence (TcgProtocol, TPM_PHYSICAL_PRESENCE_NOTPRESENT | TPM_PHYSICAL_PRESENCE_LOCK);\r |
0c18794e | 1201 | }\r |
1202 | \r | |
48211402 | 1203 | /**\r |
1204 | Check if the pending TPM request needs user input to confirm.\r | |
1205 | \r | |
1206 | The TPM request may come from OS. This API will check if TPM request exists and need user\r | |
1207 | input to confirmation.\r | |
1208 | \r | |
1209 | @retval TRUE TPM needs input to confirm user physical presence.\r | |
1210 | @retval FALSE TPM doesn't need input to confirm user physical presence.\r | |
1211 | \r | |
1212 | **/\r | |
1213 | BOOLEAN\r | |
1214 | EFIAPI\r | |
1215 | TcgPhysicalPresenceLibNeedUserConfirm(\r | |
1216 | VOID\r | |
1217 | )\r | |
1218 | {\r | |
1219 | EFI_STATUS Status;\r | |
1220 | EFI_PHYSICAL_PRESENCE TcgPpData;\r | |
1221 | UINTN DataSize;\r | |
1222 | BOOLEAN RequestConfirmed;\r | |
1223 | BOOLEAN LifetimeLock;\r | |
1224 | BOOLEAN CmdEnable;\r | |
1225 | EFI_TCG_PROTOCOL *TcgProtocol;\r | |
1226 | \r | |
1227 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);\r | |
1228 | if (EFI_ERROR (Status)) {\r | |
1229 | return FALSE;\r | |
1230 | }\r | |
1231 | \r | |
1232 | //\r | |
1233 | // Check Tpm requests\r | |
1234 | //\r | |
1235 | DataSize = sizeof (EFI_PHYSICAL_PRESENCE);\r | |
1236 | Status = gRT->GetVariable (\r | |
1237 | PHYSICAL_PRESENCE_VARIABLE,\r | |
1238 | &gEfiPhysicalPresenceGuid,\r | |
1239 | NULL,\r | |
1240 | &DataSize,\r | |
1241 | &TcgPpData\r | |
1242 | );\r | |
1243 | if (EFI_ERROR (Status)) {\r | |
1244 | return FALSE;\r | |
1245 | }\r | |
1246 | \r | |
1247 | if (TcgPpData.PPRequest == PHYSICAL_PRESENCE_NO_ACTION) {\r | |
1248 | //\r | |
1249 | // No operation request\r | |
1250 | //\r | |
1251 | return FALSE;\r | |
1252 | }\r | |
1253 | \r | |
1254 | if (!HaveValidTpmRequest(&TcgPpData, &RequestConfirmed)) {\r | |
1255 | //\r | |
1256 | // Invalid operation request.\r | |
1257 | //\r | |
1258 | return FALSE;\r | |
1259 | }\r | |
1260 | \r | |
1261 | //\r | |
1262 | // Check Tpm Capability\r | |
1263 | //\r | |
1264 | Status = GetTpmCapability (TcgProtocol, &LifetimeLock, &CmdEnable);\r | |
1265 | if (EFI_ERROR (Status)) {\r | |
1266 | return FALSE;\r | |
1267 | }\r | |
1268 | \r | |
1269 | if (!CmdEnable) {\r | |
1270 | if (LifetimeLock) {\r | |
1271 | //\r | |
1272 | // physicalPresenceCMDEnable is locked, can't execute physical presence command.\r | |
1273 | //\r | |
1274 | return FALSE;\r | |
1275 | }\r | |
1276 | }\r | |
1277 | \r | |
1278 | if (!RequestConfirmed) {\r | |
1279 | //\r | |
1280 | // Need UI to confirm\r | |
1281 | //\r | |
1282 | return TRUE;\r | |
1283 | }\r | |
1284 | \r | |
1285 | return FALSE;\r | |
1286 | }\r | |
1287 | \r |