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1abfa4ce JY |
1 | /** @file\r |
2 | Execute pending TPM2 requests from OS or BIOS.\r | |
3 | \r | |
4 | Caution: This module requires additional review when modified.\r | |
5 | This driver will have external input - variable.\r | |
6 | This external input must be validated carefully to avoid security issue.\r | |
7 | \r | |
8 | Tpm2ExecutePendingTpmRequest() will receive untrusted input and do validation.\r | |
9 | \r | |
1a2ad3ba | 10 | Copyright (c) 2013 - 2020, Intel Corporation. All rights reserved.<BR>\r |
289b714b | 11 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1abfa4ce JY |
12 | \r |
13 | **/\r | |
14 | \r | |
15 | #include <PiDxe.h>\r | |
16 | \r | |
17 | #include <Protocol/Tcg2Protocol.h>\r | |
18 | #include <Protocol/VariableLock.h>\r | |
19 | #include <Library/DebugLib.h>\r | |
20 | #include <Library/BaseMemoryLib.h>\r | |
21 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
22 | #include <Library/UefiDriverEntryPoint.h>\r | |
23 | #include <Library/UefiBootServicesTableLib.h>\r | |
24 | #include <Library/UefiLib.h>\r | |
25 | #include <Library/MemoryAllocationLib.h>\r | |
26 | #include <Library/PrintLib.h>\r | |
27 | #include <Library/HiiLib.h>\r | |
28 | #include <Library/HobLib.h>\r | |
29 | #include <Guid/EventGroup.h>\r | |
30 | #include <Guid/Tcg2PhysicalPresenceData.h>\r | |
31 | #include <Library/Tpm2CommandLib.h>\r | |
32 | #include <Library/Tcg2PhysicalPresenceLib.h>\r | |
33 | #include <Library/Tcg2PpVendorLib.h>\r | |
34 | \r | |
35 | #define CONFIRM_BUFFER_SIZE 4096\r | |
36 | \r | |
37 | EFI_HII_HANDLE mTcg2PpStringPackHandle;\r | |
38 | \r | |
39 | /**\r | |
40 | Get string by string id from HII Interface.\r | |
41 | \r | |
42 | @param[in] Id String ID.\r | |
43 | \r | |
44 | @retval CHAR16 * String from ID.\r | |
45 | @retval NULL If error occurs.\r | |
46 | \r | |
47 | **/\r | |
48 | CHAR16 *\r | |
49 | Tcg2PhysicalPresenceGetStringById (\r | |
50 | IN EFI_STRING_ID Id\r | |
51 | )\r | |
52 | {\r | |
53 | return HiiGetString (mTcg2PpStringPackHandle, Id, NULL);\r | |
54 | }\r | |
55 | \r | |
56 | /**\r | |
57 | Send ClearControl and Clear command to TPM.\r | |
58 | \r | |
59 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
60 | \r | |
61 | @retval EFI_SUCCESS Operation completed successfully.\r | |
62 | @retval EFI_TIMEOUT The register can't run into the expected status in time.\r | |
63 | @retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r | |
64 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
65 | \r | |
66 | **/\r | |
67 | EFI_STATUS\r | |
68 | EFIAPI\r | |
69 | Tpm2CommandClear (\r | |
70 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
71 | )\r | |
72 | {\r | |
73 | EFI_STATUS Status;\r | |
74 | TPMS_AUTH_COMMAND *AuthSession;\r | |
75 | TPMS_AUTH_COMMAND LocalAuthSession;\r | |
76 | \r | |
77 | if (PlatformAuth == NULL) {\r | |
78 | AuthSession = NULL;\r | |
79 | } else {\r | |
80 | AuthSession = &LocalAuthSession;\r | |
81 | ZeroMem (&LocalAuthSession, sizeof(LocalAuthSession));\r | |
82 | LocalAuthSession.sessionHandle = TPM_RS_PW;\r | |
83 | LocalAuthSession.hmac.size = PlatformAuth->size;\r | |
84 | CopyMem (LocalAuthSession.hmac.buffer, PlatformAuth->buffer, PlatformAuth->size);\r | |
85 | }\r | |
86 | \r | |
87 | DEBUG ((EFI_D_INFO, "Tpm2ClearControl ... \n"));\r | |
88 | Status = Tpm2ClearControl (TPM_RH_PLATFORM, AuthSession, NO);\r | |
89 | DEBUG ((EFI_D_INFO, "Tpm2ClearControl - %r\n", Status));\r | |
90 | if (EFI_ERROR (Status)) {\r | |
91 | goto Done;\r | |
92 | }\r | |
93 | DEBUG ((EFI_D_INFO, "Tpm2Clear ... \n"));\r | |
94 | Status = Tpm2Clear (TPM_RH_PLATFORM, AuthSession);\r | |
95 | DEBUG ((EFI_D_INFO, "Tpm2Clear - %r\n", Status));\r | |
96 | \r | |
97 | Done:\r | |
98 | ZeroMem (&LocalAuthSession.hmac, sizeof(LocalAuthSession.hmac));\r | |
99 | return Status;\r | |
100 | }\r | |
101 | \r | |
1abfa4ce JY |
102 | /**\r |
103 | Change EPS.\r | |
104 | \r | |
105 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
b3548d32 | 106 | \r |
1abfa4ce JY |
107 | @retval EFI_SUCCESS Operation completed successfully.\r |
108 | **/\r | |
109 | EFI_STATUS\r | |
110 | Tpm2CommandChangeEps (\r | |
111 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
112 | )\r | |
113 | {\r | |
114 | EFI_STATUS Status;\r | |
115 | TPMS_AUTH_COMMAND *AuthSession;\r | |
116 | TPMS_AUTH_COMMAND LocalAuthSession;\r | |
117 | \r | |
118 | if (PlatformAuth == NULL) {\r | |
119 | AuthSession = NULL;\r | |
120 | } else {\r | |
121 | AuthSession = &LocalAuthSession;\r | |
122 | ZeroMem (&LocalAuthSession, sizeof(LocalAuthSession));\r | |
123 | LocalAuthSession.sessionHandle = TPM_RS_PW;\r | |
124 | LocalAuthSession.hmac.size = PlatformAuth->size;\r | |
125 | CopyMem (LocalAuthSession.hmac.buffer, PlatformAuth->buffer, PlatformAuth->size);\r | |
126 | }\r | |
127 | \r | |
128 | Status = Tpm2ChangeEPS (TPM_RH_PLATFORM, AuthSession);\r | |
129 | DEBUG ((EFI_D_INFO, "Tpm2ChangeEPS - %r\n", Status));\r | |
c31313da JY |
130 | \r |
131 | ZeroMem(&LocalAuthSession.hmac, sizeof(LocalAuthSession.hmac));\r | |
1abfa4ce JY |
132 | return Status;\r |
133 | }\r | |
134 | \r | |
135 | /**\r | |
136 | Execute physical presence operation requested by the OS.\r | |
137 | \r | |
138 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
139 | @param[in] CommandCode Physical presence operation value.\r | |
140 | @param[in] CommandParameter Physical presence operation parameter.\r | |
141 | @param[in, out] PpiFlags The physical presence interface flags.\r | |
b3548d32 | 142 | \r |
1abfa4ce | 143 | @retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Unknown physical presence operation.\r |
b3548d32 | 144 | @retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Error occurred during sending command to TPM or\r |
1abfa4ce JY |
145 | receiving response from TPM.\r |
146 | @retval Others Return code from the TPM device after command execution.\r | |
147 | **/\r | |
148 | UINT32\r | |
149 | Tcg2ExecutePhysicalPresence (\r | |
150 | IN TPM2B_AUTH *PlatformAuth, OPTIONAL\r | |
151 | IN UINT32 CommandCode,\r | |
152 | IN UINT32 CommandParameter,\r | |
153 | IN OUT EFI_TCG2_PHYSICAL_PRESENCE_FLAGS *PpiFlags\r | |
154 | )\r | |
155 | {\r | |
156 | EFI_STATUS Status;\r | |
07cdba18 JY |
157 | EFI_TCG2_EVENT_ALGORITHM_BITMAP TpmHashAlgorithmBitmap;\r |
158 | UINT32 ActivePcrBanks;\r | |
1abfa4ce | 159 | \r |
1abfa4ce JY |
160 | switch (CommandCode) {\r |
161 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
162 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
163 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
164 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
165 | Status = Tpm2CommandClear (PlatformAuth);\r | |
166 | if (EFI_ERROR (Status)) {\r | |
167 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
168 | } else {\r | |
169 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
170 | }\r | |
171 | \r | |
172 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_TRUE:\r | |
173 | PpiFlags->PPFlags |= TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CLEAR;\r | |
174 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
175 | \r | |
176 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_FALSE:\r | |
177 | PpiFlags->PPFlags &= ~TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CLEAR;\r | |
178 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
179 | \r | |
180 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
e92ddda2 SZ |
181 | Status = Tpm2GetCapabilitySupportedAndActivePcrs (&TpmHashAlgorithmBitmap, &ActivePcrBanks);\r |
182 | ASSERT_EFI_ERROR (Status);\r | |
d02a848e ZC |
183 | \r |
184 | //\r | |
185 | // PP spec requirements:\r | |
186 | // Firmware should check that all requested (set) hashing algorithms are supported with respective PCR banks.\r | |
187 | // Firmware has to ensure that at least one PCR banks is active.\r | |
188 | // If not, an error is returned and no action is taken.\r | |
189 | //\r | |
190 | if (CommandParameter == 0 || (CommandParameter & (~TpmHashAlgorithmBitmap)) != 0) {\r | |
191 | DEBUG((DEBUG_ERROR, "PCR banks %x to allocate are not supported by TPM. Skip operation\n", CommandParameter));\r | |
192 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
193 | }\r | |
194 | \r | |
07cdba18 | 195 | Status = Tpm2PcrAllocateBanks (PlatformAuth, TpmHashAlgorithmBitmap, CommandParameter);\r |
1abfa4ce JY |
196 | if (EFI_ERROR (Status)) {\r |
197 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
198 | } else {\r | |
199 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
200 | }\r | |
201 | \r | |
202 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
203 | Status = Tpm2CommandChangeEps (PlatformAuth);\r | |
204 | if (EFI_ERROR (Status)) {\r | |
205 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
206 | } else {\r | |
207 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
208 | }\r | |
209 | \r | |
210 | case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:\r | |
e92ddda2 SZ |
211 | Status = Tpm2GetCapabilitySupportedAndActivePcrs (&TpmHashAlgorithmBitmap, &ActivePcrBanks);\r |
212 | ASSERT_EFI_ERROR (Status);\r | |
07cdba18 | 213 | Status = Tpm2PcrAllocateBanks (PlatformAuth, TpmHashAlgorithmBitmap, TpmHashAlgorithmBitmap);\r |
1abfa4ce JY |
214 | if (EFI_ERROR (Status)) {\r |
215 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
216 | } else {\r | |
217 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
218 | }\r | |
219 | \r | |
e92ddda2 SZ |
220 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r |
221 | PpiFlags->PPFlags |= TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_ENABLE_BLOCK_SID;\r | |
222 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
223 | \r | |
224 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
225 | PpiFlags->PPFlags &= ~TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_ENABLE_BLOCK_SID;\r | |
226 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
227 | \r | |
228 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_TRUE:\r | |
229 | PpiFlags->PPFlags |= TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_ENABLE_BLOCK_SID;\r | |
230 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
231 | \r | |
232 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_FALSE:\r | |
233 | PpiFlags->PPFlags &= ~TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_ENABLE_BLOCK_SID;\r | |
234 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
235 | \r | |
236 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_TRUE:\r | |
237 | PpiFlags->PPFlags |= TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_DISABLE_BLOCK_SID;\r | |
238 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
239 | \r | |
240 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_FALSE:\r | |
241 | PpiFlags->PPFlags &= ~TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_DISABLE_BLOCK_SID;\r | |
242 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
243 | \r | |
1abfa4ce JY |
244 | default:\r |
245 | if (CommandCode <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {\r | |
246 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
247 | } else {\r | |
248 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
249 | }\r | |
250 | }\r | |
251 | }\r | |
252 | \r | |
253 | \r | |
254 | /**\r | |
255 | Read the specified key for user confirmation.\r | |
256 | \r | |
257 | @param[in] CautionKey If true, F12 is used as confirm key;\r | |
258 | If false, F10 is used as confirm key.\r | |
259 | \r | |
260 | @retval TRUE User confirmed the changes by input.\r | |
261 | @retval FALSE User discarded the changes.\r | |
262 | **/\r | |
263 | BOOLEAN\r | |
264 | Tcg2ReadUserKey (\r | |
265 | IN BOOLEAN CautionKey\r | |
266 | )\r | |
267 | {\r | |
268 | EFI_STATUS Status;\r | |
269 | EFI_INPUT_KEY Key;\r | |
270 | UINT16 InputKey;\r | |
b3548d32 LG |
271 | \r |
272 | InputKey = 0;\r | |
1abfa4ce JY |
273 | do {\r |
274 | Status = gBS->CheckEvent (gST->ConIn->WaitForKey);\r | |
275 | if (!EFI_ERROR (Status)) {\r | |
276 | Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);\r | |
277 | if (Key.ScanCode == SCAN_ESC) {\r | |
278 | InputKey = Key.ScanCode;\r | |
279 | }\r | |
280 | if ((Key.ScanCode == SCAN_F10) && !CautionKey) {\r | |
281 | InputKey = Key.ScanCode;\r | |
282 | }\r | |
283 | if ((Key.ScanCode == SCAN_F12) && CautionKey) {\r | |
284 | InputKey = Key.ScanCode;\r | |
285 | }\r | |
b3548d32 | 286 | }\r |
1abfa4ce JY |
287 | } while (InputKey == 0);\r |
288 | \r | |
289 | if (InputKey != SCAN_ESC) {\r | |
290 | return TRUE;\r | |
291 | }\r | |
b3548d32 | 292 | \r |
1abfa4ce JY |
293 | return FALSE;\r |
294 | }\r | |
295 | \r | |
296 | /**\r | |
297 | Fill Buffer With BootHashAlg.\r | |
298 | \r | |
299 | @param[in] Buffer Buffer to be filled.\r | |
300 | @param[in] BufferSize Size of buffer.\r | |
301 | @param[in] BootHashAlg BootHashAlg.\r | |
302 | \r | |
303 | **/\r | |
304 | VOID\r | |
305 | Tcg2FillBufferWithBootHashAlg (\r | |
306 | IN UINT16 *Buffer,\r | |
307 | IN UINTN BufferSize,\r | |
308 | IN UINT32 BootHashAlg\r | |
309 | )\r | |
310 | {\r | |
311 | Buffer[0] = 0;\r | |
312 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {\r | |
313 | if (Buffer[0] != 0) {\r | |
314 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
315 | }\r | |
316 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA1", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
317 | }\r | |
318 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {\r | |
319 | if (Buffer[0] != 0) {\r | |
320 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
321 | }\r | |
322 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
323 | }\r | |
324 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {\r | |
325 | if (Buffer[0] != 0) {\r | |
326 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
327 | }\r | |
328 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA384", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
329 | }\r | |
330 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {\r | |
331 | if (Buffer[0] != 0) {\r | |
332 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
333 | }\r | |
334 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA512", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
335 | }\r | |
336 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {\r | |
337 | if (Buffer[0] != 0) {\r | |
338 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
339 | }\r | |
340 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SM3_256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
341 | }\r | |
342 | }\r | |
343 | \r | |
344 | /**\r | |
345 | Display the confirm text and get user confirmation.\r | |
346 | \r | |
347 | @param[in] TpmPpCommand The requested TPM physical presence command.\r | |
348 | @param[in] TpmPpCommandParameter The requested TPM physical presence command parameter.\r | |
349 | \r | |
350 | @retval TRUE The user has confirmed the changes.\r | |
351 | @retval FALSE The user doesn't confirm the changes.\r | |
352 | **/\r | |
353 | BOOLEAN\r | |
354 | Tcg2UserConfirm (\r | |
355 | IN UINT32 TpmPpCommand,\r | |
356 | IN UINT32 TpmPpCommandParameter\r | |
357 | )\r | |
358 | {\r | |
359 | CHAR16 *ConfirmText;\r | |
360 | CHAR16 *TmpStr1;\r | |
b3548d32 | 361 | CHAR16 *TmpStr2;\r |
1abfa4ce JY |
362 | UINTN BufSize;\r |
363 | BOOLEAN CautionKey;\r | |
364 | BOOLEAN NoPpiInfo;\r | |
365 | UINT16 Index;\r | |
366 | CHAR16 DstStr[81];\r | |
367 | CHAR16 TempBuffer[1024];\r | |
368 | CHAR16 TempBuffer2[1024];\r | |
369 | EFI_TCG2_PROTOCOL *Tcg2Protocol;\r | |
370 | EFI_TCG2_BOOT_SERVICE_CAPABILITY ProtocolCapability;\r | |
371 | UINT32 CurrentPCRBanks;\r | |
372 | EFI_STATUS Status;\r | |
b3548d32 | 373 | \r |
1abfa4ce JY |
374 | TmpStr2 = NULL;\r |
375 | CautionKey = FALSE;\r | |
376 | NoPpiInfo = FALSE;\r | |
377 | BufSize = CONFIRM_BUFFER_SIZE;\r | |
378 | ConfirmText = AllocateZeroPool (BufSize);\r | |
379 | ASSERT (ConfirmText != NULL);\r | |
380 | \r | |
e92ddda2 SZ |
381 | mTcg2PpStringPackHandle = HiiAddPackages (&gEfiTcg2PhysicalPresenceGuid, gImageHandle, DxeTcg2PhysicalPresenceLibStrings, NULL);\r |
382 | ASSERT (mTcg2PpStringPackHandle != NULL);\r | |
383 | \r | |
1abfa4ce JY |
384 | switch (TpmPpCommand) {\r |
385 | \r | |
386 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
387 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
388 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
389 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
390 | CautionKey = TRUE;\r | |
391 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r | |
392 | \r | |
393 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
394 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
395 | FreePool (TmpStr1);\r | |
396 | \r | |
397 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
398 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
399 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 | 400 | FreePool (TmpStr1);\r |
1abfa4ce JY |
401 | \r |
402 | break;\r | |
403 | \r | |
404 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_FALSE:\r | |
405 | CautionKey = TRUE;\r | |
406 | NoPpiInfo = TRUE;\r | |
407 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r | |
408 | \r | |
409 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_PPI_HEAD_STR));\r | |
410 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
411 | FreePool (TmpStr1);\r | |
412 | \r | |
413 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NOTE_CLEAR));\r | |
414 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
415 | FreePool (TmpStr1);\r | |
416 | \r | |
417 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
418 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
419 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 | 420 | FreePool (TmpStr1);\r |
1abfa4ce JY |
421 | \r |
422 | break;\r | |
423 | \r | |
424 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
e92ddda2 SZ |
425 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &Tcg2Protocol);\r |
426 | ASSERT_EFI_ERROR (Status);\r | |
427 | \r | |
428 | ProtocolCapability.Size = sizeof(ProtocolCapability);\r | |
429 | Status = Tcg2Protocol->GetCapability (\r | |
430 | Tcg2Protocol,\r | |
431 | &ProtocolCapability\r | |
432 | );\r | |
433 | ASSERT_EFI_ERROR (Status);\r | |
434 | \r | |
435 | Status = Tcg2Protocol->GetActivePcrBanks (\r | |
436 | Tcg2Protocol,\r | |
437 | &CurrentPCRBanks\r | |
438 | );\r | |
439 | ASSERT_EFI_ERROR (Status);\r | |
440 | \r | |
1abfa4ce JY |
441 | CautionKey = TRUE;\r |
442 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_SET_PCR_BANKS));\r | |
443 | \r | |
444 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
445 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
446 | FreePool (TmpStr1);\r | |
447 | \r | |
448 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_SET_PCR_BANKS_1));\r | |
449 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 | 450 | FreePool (TmpStr1);\r |
1abfa4ce JY |
451 | \r |
452 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_SET_PCR_BANKS_2));\r | |
453 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 | 454 | FreePool (TmpStr1);\r |
1abfa4ce JY |
455 | \r |
456 | Tcg2FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), TpmPpCommandParameter);\r | |
457 | Tcg2FillBufferWithBootHashAlg (TempBuffer2, sizeof(TempBuffer2), CurrentPCRBanks);\r | |
458 | \r | |
459 | TmpStr1 = AllocateZeroPool (BufSize);\r | |
460 | ASSERT (TmpStr1 != NULL);\r | |
461 | UnicodeSPrint (TmpStr1, BufSize, L"Current PCRBanks is 0x%x. (%s)\nNew PCRBanks is 0x%x. (%s)\n", CurrentPCRBanks, TempBuffer2, TpmPpCommandParameter, TempBuffer);\r | |
462 | \r | |
463 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
464 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 | 465 | FreePool (TmpStr1);\r |
1abfa4ce JY |
466 | \r |
467 | break;\r | |
468 | \r | |
469 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
470 | CautionKey = TRUE;\r | |
471 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CHANGE_EPS));\r | |
472 | \r | |
473 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
474 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
475 | FreePool (TmpStr1);\r | |
476 | \r | |
477 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CHANGE_EPS_1));\r | |
478 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 LG |
479 | FreePool (TmpStr1);\r |
480 | \r | |
1abfa4ce JY |
481 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CHANGE_EPS_2));\r |
482 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
b3548d32 | 483 | FreePool (TmpStr1);\r |
1abfa4ce JY |
484 | \r |
485 | break;\r | |
e92ddda2 SZ |
486 | \r |
487 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r | |
488 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_ENABLE_BLOCK_SID));\r | |
489 | \r | |
490 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_HEAD_STR));\r | |
491 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
492 | FreePool (TmpStr1);\r | |
493 | break;\r | |
494 | \r | |
495 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
496 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_DISABLE_BLOCK_SID));\r | |
497 | \r | |
498 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_HEAD_STR));\r | |
499 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
500 | FreePool (TmpStr1);\r | |
501 | break;\r | |
502 | \r | |
503 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_FALSE:\r | |
504 | NoPpiInfo = TRUE;\r | |
505 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_PP_ENABLE_BLOCK_SID));\r | |
506 | \r | |
507 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_PPI_HEAD_STR));\r | |
508 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
509 | FreePool (TmpStr1);\r | |
510 | break;\r | |
511 | \r | |
512 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_FALSE:\r | |
513 | NoPpiInfo = TRUE;\r | |
514 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_PP_DISABLE_BLOCK_SID));\r | |
515 | \r | |
516 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_PPI_HEAD_STR));\r | |
517 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
518 | FreePool (TmpStr1);\r | |
519 | break;\r | |
1abfa4ce JY |
520 | \r |
521 | default:\r | |
522 | ;\r | |
523 | }\r | |
524 | \r | |
525 | if (TmpStr2 == NULL) {\r | |
526 | FreePool (ConfirmText);\r | |
527 | return FALSE;\r | |
528 | }\r | |
529 | \r | |
530 | if (TpmPpCommand < TCG2_PHYSICAL_PRESENCE_STORAGE_MANAGEMENT_BEGIN) {\r | |
531 | if (CautionKey) {\r | |
532 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
533 | } else {\r | |
534 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
535 | }\r | |
536 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
537 | FreePool (TmpStr1);\r | |
538 | \r | |
539 | if (NoPpiInfo) {\r | |
540 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r | |
541 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
542 | FreePool (TmpStr1);\r | |
543 | }\r | |
544 | \r | |
545 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_REJECT_KEY));\r | |
546 | } else {\r | |
547 | if (CautionKey) {\r | |
548 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_CAUTION_KEY));\r | |
549 | } else {\r | |
550 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_ACCEPT_KEY));\r | |
551 | }\r | |
552 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
553 | FreePool (TmpStr1);\r | |
554 | \r | |
555 | if (NoPpiInfo) {\r | |
556 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_NO_PPI_INFO));\r | |
557 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
558 | FreePool (TmpStr1);\r | |
559 | }\r | |
560 | \r | |
561 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_REJECT_KEY));\r | |
562 | }\r | |
563 | BufSize -= StrSize (ConfirmText);\r | |
564 | UnicodeSPrint (ConfirmText + StrLen (ConfirmText), BufSize, TmpStr1, TmpStr2);\r | |
565 | \r | |
566 | DstStr[80] = L'\0';\r | |
567 | for (Index = 0; Index < StrLen (ConfirmText); Index += 80) {\r | |
b3548d32 LG |
568 | StrnCpyS (DstStr, sizeof (DstStr) / sizeof (CHAR16), ConfirmText + Index, sizeof (DstStr) / sizeof (CHAR16) - 1);\r |
569 | Print (DstStr);\r | |
1abfa4ce | 570 | }\r |
b3548d32 | 571 | \r |
1abfa4ce JY |
572 | FreePool (TmpStr1);\r |
573 | FreePool (TmpStr2);\r | |
574 | FreePool (ConfirmText);\r | |
e92ddda2 | 575 | HiiRemovePackages (mTcg2PpStringPackHandle);\r |
1abfa4ce JY |
576 | \r |
577 | if (Tcg2ReadUserKey (CautionKey)) {\r | |
578 | return TRUE;\r | |
579 | }\r | |
580 | \r | |
b3548d32 | 581 | return FALSE;\r |
1abfa4ce JY |
582 | }\r |
583 | \r | |
584 | /**\r | |
b3548d32 | 585 | Check if there is a valid physical presence command request. Also updates parameter value\r |
1abfa4ce | 586 | to whether the requested physical presence command already confirmed by user\r |
b3548d32 LG |
587 | \r |
588 | @param[in] TcgPpData EFI Tcg2 Physical Presence request data.\r | |
1abfa4ce | 589 | @param[in] Flags The physical presence interface flags.\r |
e92ddda2 | 590 | @param[out] RequestConfirmed If the physical presence operation command required user confirm from UI.\r |
b3548d32 | 591 | True, it indicates the command doesn't require user confirm, or already confirmed\r |
e92ddda2 SZ |
592 | in last boot cycle by user.\r |
593 | False, it indicates the command need user confirm from UI.\r | |
1abfa4ce JY |
594 | \r |
595 | @retval TRUE Physical Presence operation command is valid.\r | |
596 | @retval FALSE Physical Presence operation command is invalid.\r | |
597 | \r | |
598 | **/\r | |
599 | BOOLEAN\r | |
600 | Tcg2HaveValidTpmRequest (\r | |
601 | IN EFI_TCG2_PHYSICAL_PRESENCE *TcgPpData,\r | |
602 | IN EFI_TCG2_PHYSICAL_PRESENCE_FLAGS Flags,\r | |
603 | OUT BOOLEAN *RequestConfirmed\r | |
604 | )\r | |
605 | {\r | |
e92ddda2 SZ |
606 | EFI_TCG2_PROTOCOL *Tcg2Protocol;\r |
607 | EFI_STATUS Status;\r | |
608 | BOOLEAN IsRequestValid;\r | |
1abfa4ce JY |
609 | \r |
610 | *RequestConfirmed = FALSE;\r | |
611 | \r | |
e92ddda2 SZ |
612 | if (TcgPpData->PPRequest <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {\r |
613 | //\r | |
614 | // Need TCG2 protocol.\r | |
615 | //\r | |
616 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &Tcg2Protocol);\r | |
617 | if (EFI_ERROR (Status)) {\r | |
618 | return FALSE;\r | |
619 | }\r | |
620 | }\r | |
621 | \r | |
1abfa4ce JY |
622 | switch (TcgPpData->PPRequest) {\r |
623 | case TCG2_PHYSICAL_PRESENCE_NO_ACTION:\r | |
624 | *RequestConfirmed = TRUE;\r | |
625 | return TRUE;\r | |
626 | \r | |
627 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
628 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
629 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
630 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
631 | if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CLEAR) == 0) {\r | |
632 | *RequestConfirmed = TRUE;\r | |
633 | }\r | |
634 | break;\r | |
635 | \r | |
636 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_TRUE:\r | |
637 | *RequestConfirmed = TRUE;\r | |
638 | break;\r | |
639 | \r | |
640 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_CLEAR_FALSE:\r | |
641 | break;\r | |
642 | \r | |
643 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
644 | if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CHANGE_PCRS) == 0) {\r | |
645 | *RequestConfirmed = TRUE;\r | |
646 | }\r | |
647 | break;\r | |
648 | \r | |
649 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
650 | if ((Flags.PPFlags & TCG2_BIOS_TPM_MANAGEMENT_FLAG_PP_REQUIRED_FOR_CHANGE_EPS) == 0) {\r | |
651 | *RequestConfirmed = TRUE;\r | |
652 | }\r | |
653 | break;\r | |
b3548d32 | 654 | \r |
1abfa4ce JY |
655 | case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:\r |
656 | *RequestConfirmed = TRUE;\r | |
657 | break;\r | |
658 | \r | |
e92ddda2 SZ |
659 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r |
660 | if ((Flags.PPFlags & TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_ENABLE_BLOCK_SID) == 0) {\r | |
661 | *RequestConfirmed = TRUE;\r | |
662 | }\r | |
663 | break;\r | |
664 | \r | |
665 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
666 | if ((Flags.PPFlags & TCG2_BIOS_STORAGE_MANAGEMENT_FLAG_PP_REQUIRED_FOR_DISABLE_BLOCK_SID) == 0) {\r | |
667 | *RequestConfirmed = TRUE;\r | |
668 | }\r | |
669 | break;\r | |
670 | \r | |
671 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_TRUE:\r | |
672 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_TRUE:\r | |
673 | *RequestConfirmed = TRUE;\r | |
674 | break;\r | |
675 | \r | |
676 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_FALSE:\r | |
677 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_FALSE:\r | |
678 | break;\r | |
679 | \r | |
1abfa4ce JY |
680 | default:\r |
681 | if (TcgPpData->PPRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {\r | |
682 | IsRequestValid = Tcg2PpVendorLibHasValidRequest (TcgPpData->PPRequest, Flags.PPFlags, RequestConfirmed);\r | |
683 | if (!IsRequestValid) {\r | |
684 | return FALSE;\r | |
685 | } else {\r | |
686 | break;\r | |
687 | }\r | |
688 | } else {\r | |
689 | //\r | |
690 | // Wrong Physical Presence command\r | |
691 | //\r | |
692 | return FALSE;\r | |
693 | }\r | |
694 | }\r | |
695 | \r | |
696 | if ((Flags.PPFlags & TCG2_LIB_PP_FLAG_RESET_TRACK) != 0) {\r | |
697 | //\r | |
698 | // It had been confirmed in last boot, it doesn't need confirm again.\r | |
699 | //\r | |
700 | *RequestConfirmed = TRUE;\r | |
701 | }\r | |
702 | \r | |
703 | //\r | |
704 | // Physical Presence command is correct\r | |
705 | //\r | |
706 | return TRUE;\r | |
707 | }\r | |
708 | \r | |
709 | \r | |
710 | /**\r | |
711 | Check and execute the requested physical presence command.\r | |
712 | \r | |
713 | Caution: This function may receive untrusted input.\r | |
714 | TcgPpData variable is external input, so this function will validate\r | |
715 | its data structure to be valid value.\r | |
716 | \r | |
e92ddda2 SZ |
717 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r |
718 | @param[in, out] TcgPpData Pointer to the physical presence NV variable.\r | |
719 | @param[in, out] Flags Pointer to the physical presence interface flags.\r | |
1abfa4ce JY |
720 | **/\r |
721 | VOID\r | |
722 | Tcg2ExecutePendingTpmRequest (\r | |
723 | IN TPM2B_AUTH *PlatformAuth, OPTIONAL\r | |
e92ddda2 SZ |
724 | IN OUT EFI_TCG2_PHYSICAL_PRESENCE *TcgPpData,\r |
725 | IN OUT EFI_TCG2_PHYSICAL_PRESENCE_FLAGS *Flags\r | |
1abfa4ce JY |
726 | )\r |
727 | {\r | |
728 | EFI_STATUS Status;\r | |
729 | UINTN DataSize;\r | |
730 | BOOLEAN RequestConfirmed;\r | |
731 | EFI_TCG2_PHYSICAL_PRESENCE_FLAGS NewFlags;\r | |
732 | BOOLEAN ResetRequired;\r | |
733 | UINT32 NewPPFlags;\r | |
734 | \r | |
735 | if (TcgPpData->PPRequest == TCG2_PHYSICAL_PRESENCE_NO_ACTION) {\r | |
736 | //\r | |
737 | // No operation request\r | |
738 | //\r | |
739 | return;\r | |
740 | }\r | |
741 | \r | |
e92ddda2 | 742 | if (!Tcg2HaveValidTpmRequest(TcgPpData, *Flags, &RequestConfirmed)) {\r |
1abfa4ce JY |
743 | //\r |
744 | // Invalid operation request.\r | |
745 | //\r | |
746 | if (TcgPpData->PPRequest <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {\r | |
747 | TcgPpData->PPResponse = TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
748 | } else {\r | |
749 | TcgPpData->PPResponse = TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
750 | }\r | |
751 | TcgPpData->LastPPRequest = TcgPpData->PPRequest;\r | |
752 | TcgPpData->PPRequest = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r | |
753 | TcgPpData->PPRequestParameter = 0;\r | |
754 | \r | |
755 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
756 | Status = gRT->SetVariable (\r | |
757 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
758 | &gEfiTcg2PhysicalPresenceGuid,\r | |
759 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
760 | DataSize,\r | |
761 | TcgPpData\r | |
762 | );\r | |
763 | return;\r | |
764 | }\r | |
765 | \r | |
766 | ResetRequired = FALSE;\r | |
767 | if (TcgPpData->PPRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {\r | |
e92ddda2 | 768 | NewFlags = *Flags;\r |
1abfa4ce JY |
769 | NewPPFlags = NewFlags.PPFlags;\r |
770 | TcgPpData->PPResponse = Tcg2PpVendorLibExecutePendingRequest (PlatformAuth, TcgPpData->PPRequest, &NewPPFlags, &ResetRequired);\r | |
771 | NewFlags.PPFlags = NewPPFlags;\r | |
772 | } else {\r | |
773 | if (!RequestConfirmed) {\r | |
774 | //\r | |
b3548d32 | 775 | // Print confirm text and wait for approval.\r |
1abfa4ce JY |
776 | //\r |
777 | RequestConfirmed = Tcg2UserConfirm (TcgPpData->PPRequest, TcgPpData->PPRequestParameter);\r | |
778 | }\r | |
779 | \r | |
780 | //\r | |
781 | // Execute requested physical presence command\r | |
782 | //\r | |
783 | TcgPpData->PPResponse = TCG_PP_OPERATION_RESPONSE_USER_ABORT;\r | |
e92ddda2 | 784 | NewFlags = *Flags;\r |
1abfa4ce JY |
785 | if (RequestConfirmed) {\r |
786 | TcgPpData->PPResponse = Tcg2ExecutePhysicalPresence (\r | |
787 | PlatformAuth,\r | |
b3548d32 LG |
788 | TcgPpData->PPRequest,\r |
789 | TcgPpData->PPRequestParameter,\r | |
1abfa4ce JY |
790 | &NewFlags\r |
791 | );\r | |
792 | }\r | |
793 | }\r | |
794 | \r | |
795 | //\r | |
796 | // Save the flags if it is updated.\r | |
797 | //\r | |
e92ddda2 SZ |
798 | if (CompareMem (Flags, &NewFlags, sizeof(EFI_TCG2_PHYSICAL_PRESENCE_FLAGS)) != 0) {\r |
799 | *Flags = NewFlags;\r | |
1abfa4ce JY |
800 | Status = gRT->SetVariable (\r |
801 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
802 | &gEfiTcg2PhysicalPresenceGuid,\r | |
803 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
804 | sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS),\r | |
805 | &NewFlags\r | |
b3548d32 | 806 | );\r |
1abfa4ce JY |
807 | }\r |
808 | \r | |
809 | //\r | |
810 | // Clear request\r | |
811 | //\r | |
812 | if ((NewFlags.PPFlags & TCG2_LIB_PP_FLAG_RESET_TRACK) == 0) {\r | |
813 | TcgPpData->LastPPRequest = TcgPpData->PPRequest;\r | |
b3548d32 | 814 | TcgPpData->PPRequest = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r |
1abfa4ce JY |
815 | TcgPpData->PPRequestParameter = 0;\r |
816 | }\r | |
817 | \r | |
818 | //\r | |
819 | // Save changes\r | |
820 | //\r | |
821 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
822 | Status = gRT->SetVariable (\r | |
823 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
824 | &gEfiTcg2PhysicalPresenceGuid,\r | |
825 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
826 | DataSize,\r | |
827 | TcgPpData\r | |
828 | );\r | |
829 | if (EFI_ERROR (Status)) {\r | |
830 | return;\r | |
831 | }\r | |
832 | \r | |
833 | if (TcgPpData->PPResponse == TCG_PP_OPERATION_RESPONSE_USER_ABORT) {\r | |
834 | return;\r | |
835 | }\r | |
836 | \r | |
837 | //\r | |
838 | // Reset system to make new TPM settings in effect\r | |
839 | //\r | |
840 | switch (TcgPpData->LastPPRequest) {\r | |
841 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
842 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
843 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
844 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
845 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
846 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
847 | case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:\r | |
848 | break;\r | |
849 | \r | |
e92ddda2 SZ |
850 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r |
851 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
852 | break;\r | |
853 | \r | |
854 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_TRUE:\r | |
855 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_TRUE:\r | |
856 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_ENABLE_BLOCK_SID_FUNC_FALSE:\r | |
857 | case TCG2_PHYSICAL_PRESENCE_SET_PP_REQUIRED_FOR_DISABLE_BLOCK_SID_FUNC_FALSE:\r | |
858 | return;\r | |
859 | \r | |
1abfa4ce JY |
860 | default:\r |
861 | if (TcgPpData->LastPPRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {\r | |
862 | if (ResetRequired) {\r | |
863 | break;\r | |
864 | } else {\r | |
865 | return ;\r | |
866 | }\r | |
867 | }\r | |
868 | if (TcgPpData->PPRequest != TCG2_PHYSICAL_PRESENCE_NO_ACTION) {\r | |
869 | break;\r | |
870 | }\r | |
871 | return;\r | |
872 | }\r | |
873 | \r | |
874 | Print (L"Rebooting system to make TPM2 settings in effect\n");\r | |
875 | gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);\r | |
b3548d32 | 876 | ASSERT (FALSE);\r |
1abfa4ce JY |
877 | }\r |
878 | \r | |
879 | /**\r | |
880 | Check and execute the pending TPM request.\r | |
881 | \r | |
b3548d32 | 882 | The TPM request may come from OS or BIOS. This API will display request information and wait\r |
1abfa4ce | 883 | for user confirmation if TPM request exists. The TPM request will be sent to TPM device after\r |
b3548d32 | 884 | the TPM request is confirmed, and one or more reset may be required to make TPM request to\r |
1abfa4ce | 885 | take effect.\r |
b3548d32 | 886 | \r |
1abfa4ce | 887 | This API should be invoked after console in and console out are all ready as they are required\r |
b3548d32 | 888 | to display request information and get user input to confirm the request.\r |
1abfa4ce JY |
889 | \r |
890 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
891 | **/\r | |
892 | VOID\r | |
893 | EFIAPI\r | |
894 | Tcg2PhysicalPresenceLibProcessRequest (\r | |
895 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
896 | )\r | |
897 | {\r | |
898 | EFI_STATUS Status;\r | |
899 | UINTN DataSize;\r | |
900 | EFI_TCG2_PHYSICAL_PRESENCE TcgPpData;\r | |
1abfa4ce JY |
901 | EDKII_VARIABLE_LOCK_PROTOCOL *VariableLockProtocol;\r |
902 | EFI_TCG2_PHYSICAL_PRESENCE_FLAGS PpiFlags;\r | |
903 | \r | |
7b9b576c | 904 | //\r |
b3548d32 | 905 | // This flags variable controls whether physical presence is required for TPM command.\r |
7b9b576c SZ |
906 | // It should be protected from malicious software. We set it as read-only variable here.\r |
907 | //\r | |
908 | Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **)&VariableLockProtocol);\r | |
909 | if (!EFI_ERROR (Status)) {\r | |
910 | Status = VariableLockProtocol->RequestToLock (\r | |
911 | VariableLockProtocol,\r | |
912 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
913 | &gEfiTcg2PhysicalPresenceGuid\r | |
914 | );\r | |
915 | if (EFI_ERROR (Status)) {\r | |
916 | DEBUG ((EFI_D_ERROR, "[TPM2] Error when lock variable %s, Status = %r\n", TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE, Status));\r | |
917 | ASSERT_EFI_ERROR (Status);\r | |
918 | }\r | |
919 | }\r | |
b3548d32 | 920 | \r |
1abfa4ce JY |
921 | //\r |
922 | // Check S4 resume\r | |
923 | //\r | |
924 | if (GetBootModeHob () == BOOT_ON_S4_RESUME) {\r | |
925 | DEBUG ((EFI_D_INFO, "S4 Resume, Skip TPM PP process!\n"));\r | |
926 | return ;\r | |
927 | }\r | |
928 | \r | |
1abfa4ce JY |
929 | //\r |
930 | // Initialize physical presence flags.\r | |
931 | //\r | |
932 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);\r | |
933 | Status = gRT->GetVariable (\r | |
934 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
935 | &gEfiTcg2PhysicalPresenceGuid,\r | |
936 | NULL,\r | |
937 | &DataSize,\r | |
938 | &PpiFlags\r | |
939 | );\r | |
940 | if (EFI_ERROR (Status)) {\r | |
710174e0 | 941 | PpiFlags.PPFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);\r |
1abfa4ce JY |
942 | Status = gRT->SetVariable (\r |
943 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
944 | &gEfiTcg2PhysicalPresenceGuid,\r | |
945 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
946 | sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS),\r | |
947 | &PpiFlags\r | |
948 | );\r | |
949 | if (EFI_ERROR (Status)) {\r | |
950 | DEBUG ((EFI_D_ERROR, "[TPM2] Set physical presence flag failed, Status = %r\n", Status));\r | |
951 | return ;\r | |
952 | }\r | |
710174e0 | 953 | DEBUG((DEBUG_INFO, "[TPM2] Initial physical presence flags value is 0x%x\n", PpiFlags.PPFlags));\r |
1abfa4ce | 954 | }\r |
b3548d32 | 955 | \r |
1abfa4ce JY |
956 | //\r |
957 | // Initialize physical presence variable.\r | |
958 | //\r | |
959 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
960 | Status = gRT->GetVariable (\r | |
961 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
962 | &gEfiTcg2PhysicalPresenceGuid,\r | |
963 | NULL,\r | |
964 | &DataSize,\r | |
965 | &TcgPpData\r | |
966 | );\r | |
967 | if (EFI_ERROR (Status)) {\r | |
968 | ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));\r | |
969 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
970 | Status = gRT->SetVariable (\r | |
971 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
972 | &gEfiTcg2PhysicalPresenceGuid,\r | |
973 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
974 | DataSize,\r | |
975 | &TcgPpData\r | |
976 | );\r | |
977 | if (EFI_ERROR (Status)) {\r | |
978 | DEBUG ((EFI_D_ERROR, "[TPM2] Set physical presence variable failed, Status = %r\n", Status));\r | |
979 | return ;\r | |
980 | }\r | |
981 | }\r | |
982 | \r | |
983 | DEBUG ((EFI_D_INFO, "[TPM2] Flags=%x, PPRequest=%x (LastPPRequest=%x)\n", PpiFlags.PPFlags, TcgPpData.PPRequest, TcgPpData.LastPPRequest));\r | |
984 | \r | |
985 | //\r | |
986 | // Execute pending TPM request.\r | |
b3548d32 | 987 | //\r |
e92ddda2 | 988 | Tcg2ExecutePendingTpmRequest (PlatformAuth, &TcgPpData, &PpiFlags);\r |
1abfa4ce JY |
989 | DEBUG ((EFI_D_INFO, "[TPM2] PPResponse = %x (LastPPRequest=%x, Flags=%x)\n", TcgPpData.PPResponse, TcgPpData.LastPPRequest, PpiFlags.PPFlags));\r |
990 | \r | |
991 | }\r | |
992 | \r | |
993 | /**\r | |
994 | Check if the pending TPM request needs user input to confirm.\r | |
995 | \r | |
996 | The TPM request may come from OS. This API will check if TPM request exists and need user\r | |
997 | input to confirmation.\r | |
b3548d32 | 998 | \r |
1abfa4ce JY |
999 | @retval TRUE TPM needs input to confirm user physical presence.\r |
1000 | @retval FALSE TPM doesn't need input to confirm user physical presence.\r | |
1001 | \r | |
1002 | **/\r | |
1003 | BOOLEAN\r | |
1004 | EFIAPI\r | |
1005 | Tcg2PhysicalPresenceLibNeedUserConfirm(\r | |
1006 | VOID\r | |
1007 | )\r | |
1008 | {\r | |
1009 | EFI_STATUS Status;\r | |
1010 | EFI_TCG2_PHYSICAL_PRESENCE TcgPpData;\r | |
1011 | UINTN DataSize;\r | |
1012 | BOOLEAN RequestConfirmed;\r | |
1abfa4ce JY |
1013 | EFI_TCG2_PHYSICAL_PRESENCE_FLAGS PpiFlags;\r |
1014 | \r | |
1abfa4ce JY |
1015 | //\r |
1016 | // Check S4 resume\r | |
1017 | //\r | |
1018 | if (GetBootModeHob () == BOOT_ON_S4_RESUME) {\r | |
1019 | DEBUG ((EFI_D_INFO, "S4 Resume, Skip TPM PP process!\n"));\r | |
1020 | return FALSE;\r | |
1021 | }\r | |
1022 | \r | |
1023 | //\r | |
1024 | // Check Tpm requests\r | |
1025 | //\r | |
1026 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
1027 | Status = gRT->GetVariable (\r | |
1028 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
1029 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1030 | NULL,\r | |
1031 | &DataSize,\r | |
1032 | &TcgPpData\r | |
1033 | );\r | |
1034 | if (EFI_ERROR (Status)) {\r | |
1035 | return FALSE;\r | |
1036 | }\r | |
1037 | \r | |
1038 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);\r | |
1039 | Status = gRT->GetVariable (\r | |
1040 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1041 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1042 | NULL,\r | |
1043 | &DataSize,\r | |
1044 | &PpiFlags\r | |
1045 | );\r | |
1046 | if (EFI_ERROR (Status)) {\r | |
1047 | return FALSE;\r | |
1048 | }\r | |
b3548d32 | 1049 | \r |
1abfa4ce JY |
1050 | if (TcgPpData.PPRequest == TCG2_PHYSICAL_PRESENCE_NO_ACTION) {\r |
1051 | //\r | |
1052 | // No operation request\r | |
1053 | //\r | |
1054 | return FALSE;\r | |
1055 | }\r | |
1056 | \r | |
1057 | if (!Tcg2HaveValidTpmRequest(&TcgPpData, PpiFlags, &RequestConfirmed)) {\r | |
1058 | //\r | |
1059 | // Invalid operation request.\r | |
1060 | //\r | |
1061 | return FALSE;\r | |
1062 | }\r | |
1063 | \r | |
1064 | if (!RequestConfirmed) {\r | |
1065 | //\r | |
1066 | // Need UI to confirm\r | |
1067 | //\r | |
1068 | return TRUE;\r | |
1069 | }\r | |
1070 | \r | |
1071 | return FALSE;\r | |
1072 | }\r | |
1073 | \r | |
1074 | \r | |
1075 | /**\r | |
1076 | The handler for TPM physical presence function:\r | |
1077 | Return TPM Operation Response to OS Environment.\r | |
1078 | \r | |
1079 | @param[out] MostRecentRequest Most recent operation request.\r | |
1080 | @param[out] Response Response to the most recent operation request.\r | |
1081 | \r | |
1082 | @return Return Code for Return TPM Operation Response to OS Environment.\r | |
1083 | **/\r | |
1084 | UINT32\r | |
1085 | EFIAPI\r | |
1086 | Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (\r | |
1087 | OUT UINT32 *MostRecentRequest,\r | |
1088 | OUT UINT32 *Response\r | |
1089 | )\r | |
1090 | {\r | |
1091 | EFI_STATUS Status;\r | |
1092 | UINTN DataSize;\r | |
1093 | EFI_TCG2_PHYSICAL_PRESENCE PpData;\r | |
b3548d32 | 1094 | \r |
1abfa4ce JY |
1095 | DEBUG ((EFI_D_INFO, "[TPM2] ReturnOperationResponseToOsFunction\n"));\r |
1096 | \r | |
1097 | //\r | |
1098 | // Get the Physical Presence variable\r | |
1099 | //\r | |
1100 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
1101 | Status = gRT->GetVariable (\r | |
1102 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
1103 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1104 | NULL,\r | |
1105 | &DataSize,\r | |
1106 | &PpData\r | |
1107 | );\r | |
1108 | if (EFI_ERROR (Status)) {\r | |
1109 | *MostRecentRequest = 0;\r | |
1110 | *Response = 0;\r | |
1111 | DEBUG ((EFI_D_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));\r | |
1112 | return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_FAILURE;\r | |
1113 | }\r | |
b3548d32 | 1114 | \r |
1abfa4ce JY |
1115 | *MostRecentRequest = PpData.LastPPRequest;\r |
1116 | *Response = PpData.PPResponse;\r | |
1117 | \r | |
1118 | return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_SUCCESS;\r | |
1119 | }\r | |
1120 | \r | |
1121 | /**\r | |
1122 | The handler for TPM physical presence function:\r | |
1123 | Submit TPM Operation Request to Pre-OS Environment and\r | |
1124 | Submit TPM Operation Request to Pre-OS Environment 2.\r | |
1125 | \r | |
1126 | Caution: This function may receive untrusted input.\r | |
b3548d32 | 1127 | \r |
1abfa4ce JY |
1128 | @param[in] OperationRequest TPM physical presence operation request.\r |
1129 | @param[in] RequestParameter TPM physical presence operation request parameter.\r | |
1130 | \r | |
1131 | @return Return Code for Submit TPM Operation Request to Pre-OS Environment and\r | |
1132 | Submit TPM Operation Request to Pre-OS Environment 2.\r | |
1133 | **/\r | |
1134 | UINT32\r | |
1135 | EFIAPI\r | |
1136 | Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (\r | |
1137 | IN UINT32 OperationRequest,\r | |
1138 | IN UINT32 RequestParameter\r | |
1139 | )\r | |
1140 | {\r | |
1141 | EFI_STATUS Status;\r | |
1142 | UINTN DataSize;\r | |
1143 | EFI_TCG2_PHYSICAL_PRESENCE PpData;\r | |
1144 | EFI_TCG2_PHYSICAL_PRESENCE_FLAGS Flags;\r | |
b3548d32 | 1145 | \r |
1abfa4ce | 1146 | DEBUG ((EFI_D_INFO, "[TPM2] SubmitRequestToPreOSFunction, Request = %x, %x\n", OperationRequest, RequestParameter));\r |
b3548d32 | 1147 | \r |
1abfa4ce JY |
1148 | //\r |
1149 | // Get the Physical Presence variable\r | |
1150 | //\r | |
1151 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
1152 | Status = gRT->GetVariable (\r | |
1153 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
1154 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1155 | NULL,\r | |
1156 | &DataSize,\r | |
1157 | &PpData\r | |
1158 | );\r | |
1159 | if (EFI_ERROR (Status)) {\r | |
1160 | DEBUG ((EFI_D_ERROR, "[TPM2] Get PP variable failure! Status = %r\n", Status));\r | |
1161 | return TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;\r | |
1162 | }\r | |
1163 | \r | |
252b891b | 1164 | if ((OperationRequest > TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) &&\r |
e92ddda2 | 1165 | (OperationRequest < TCG2_PHYSICAL_PRESENCE_STORAGE_MANAGEMENT_BEGIN) ) {\r |
1abfa4ce JY |
1166 | return TCG_PP_SUBMIT_REQUEST_TO_PREOS_NOT_IMPLEMENTED;\r |
1167 | }\r | |
1168 | \r | |
6d7c4a25 JY |
1169 | if ((PpData.PPRequest != OperationRequest) ||\r |
1170 | (PpData.PPRequestParameter != RequestParameter)) {\r | |
1abfa4ce JY |
1171 | PpData.PPRequest = (UINT8)OperationRequest;\r |
1172 | PpData.PPRequestParameter = RequestParameter;\r | |
1173 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE);\r | |
1174 | Status = gRT->SetVariable (\r | |
1175 | TCG2_PHYSICAL_PRESENCE_VARIABLE,\r | |
1176 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1177 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
1178 | DataSize,\r | |
1179 | &PpData\r | |
1180 | );\r | |
b3548d32 | 1181 | if (EFI_ERROR (Status)) {\r |
e92ddda2 SZ |
1182 | DEBUG ((EFI_D_ERROR, "[TPM2] Set PP variable failure! Status = %r\n", Status));\r |
1183 | return TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;\r | |
1184 | }\r | |
1abfa4ce JY |
1185 | }\r |
1186 | \r | |
1187 | if (OperationRequest >= TCG2_PHYSICAL_PRESENCE_VENDOR_SPECIFIC_OPERATION) {\r | |
1188 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);\r | |
1189 | Status = gRT->GetVariable (\r | |
1190 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1191 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1192 | NULL,\r | |
1193 | &DataSize,\r | |
1194 | &Flags\r | |
1195 | );\r | |
1196 | if (EFI_ERROR (Status)) {\r | |
1a2ad3ba | 1197 | Flags.PPFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);\r |
1abfa4ce JY |
1198 | }\r |
1199 | return Tcg2PpVendorLibSubmitRequestToPreOSFunction (OperationRequest, Flags.PPFlags, RequestParameter);\r | |
1200 | }\r | |
1201 | \r | |
1202 | return TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;\r | |
1203 | }\r | |
e92ddda2 SZ |
1204 | \r |
1205 | /**\r | |
1206 | Return TPM2 ManagementFlags set by PP interface.\r | |
1207 | \r | |
1208 | @retval ManagementFlags TPM2 Management Flags.\r | |
1209 | **/\r | |
1210 | UINT32\r | |
1211 | EFIAPI\r | |
1212 | Tcg2PhysicalPresenceLibGetManagementFlags (\r | |
1213 | VOID\r | |
1214 | )\r | |
1215 | {\r | |
1216 | EFI_STATUS Status;\r | |
1217 | EFI_TCG2_PHYSICAL_PRESENCE_FLAGS PpiFlags;\r | |
1218 | UINTN DataSize;\r | |
1219 | \r | |
1220 | DEBUG ((EFI_D_INFO, "[TPM2] GetManagementFlags\n"));\r | |
1221 | \r | |
1222 | DataSize = sizeof (EFI_TCG2_PHYSICAL_PRESENCE_FLAGS);\r | |
1223 | Status = gRT->GetVariable (\r | |
1224 | TCG2_PHYSICAL_PRESENCE_FLAGS_VARIABLE,\r | |
1225 | &gEfiTcg2PhysicalPresenceGuid,\r | |
1226 | NULL,\r | |
1227 | &DataSize,\r | |
1228 | &PpiFlags\r | |
1229 | );\r | |
1230 | if (EFI_ERROR (Status)) {\r | |
1a2ad3ba | 1231 | PpiFlags.PPFlags = PcdGet32(PcdTcg2PhysicalPresenceFlags);\r |
e92ddda2 SZ |
1232 | }\r |
1233 | return PpiFlags.PPFlags;\r | |
1234 | }\r |