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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 | Tcg2ExecutePendingTpmRequest() will receive untrusted input and do validation.\r | |
9 | \r | |
10 | Copyright (C) 2018, Red Hat, Inc.\r | |
11 | Copyright (c) 2018, IBM Corporation. All rights reserved.<BR>\r | |
12 | Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved.<BR>\r | |
13 | This program and the accompanying materials\r | |
14 | are licensed and made available under the terms and conditions of the BSD License\r | |
15 | which accompanies this distribution. The full text of the license may be found at\r | |
16 | http://opensource.org/licenses/bsd-license.php\r | |
17 | \r | |
18 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
19 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
20 | \r | |
21 | **/\r | |
22 | \r | |
23 | #include <PiDxe.h>\r | |
24 | \r | |
25 | #include <Guid/Tcg2PhysicalPresenceData.h>\r | |
26 | #include <IndustryStandard/QemuTpm.h>\r | |
27 | #include <Protocol/Tcg2Protocol.h>\r | |
28 | \r | |
29 | #include <Library/BaseMemoryLib.h>\r | |
30 | #include <Library/DebugLib.h>\r | |
31 | #include <Library/DxeServicesTableLib.h>\r | |
32 | #include <Library/HiiLib.h>\r | |
33 | #include <Library/HobLib.h>\r | |
34 | #include <Library/MemoryAllocationLib.h>\r | |
35 | #include <Library/PrintLib.h>\r | |
36 | #include <Library/QemuFwCfgLib.h>\r | |
37 | #include <Library/Tpm2CommandLib.h>\r | |
38 | #include <Library/UefiBootServicesTableLib.h>\r | |
39 | #include <Library/UefiLib.h>\r | |
40 | #include <Library/UefiRuntimeServicesTableLib.h>\r | |
41 | \r | |
42 | #include <Library/Tcg2PhysicalPresenceLib.h>\r | |
43 | \r | |
44 | #define CONFIRM_BUFFER_SIZE 4096\r | |
45 | \r | |
46 | EFI_HII_HANDLE mTcg2PpStringPackHandle;\r | |
47 | \r | |
48 | #define TPM_PPI_FLAGS (QEMU_TPM_PPI_FUNC_ALLOWED_USR_REQ)\r | |
49 | \r | |
50 | STATIC volatile QEMU_TPM_PPI *mPpi;\r | |
51 | \r | |
52 | \r | |
53 | /**\r | |
54 | Reads QEMU PPI config from fw_cfg.\r | |
55 | \r | |
56 | @param[out] The Config structure to read to.\r | |
57 | \r | |
58 | @retval EFI_SUCCESS Operation completed successfully.\r | |
59 | @retval EFI_PROTOCOL_ERROR Invalid fw_cfg entry size.\r | |
60 | **/\r | |
61 | STATIC\r | |
62 | EFI_STATUS\r | |
63 | QemuTpmReadConfig (\r | |
64 | OUT QEMU_FWCFG_TPM_CONFIG *Config\r | |
65 | )\r | |
66 | {\r | |
67 | EFI_STATUS Status;\r | |
68 | FIRMWARE_CONFIG_ITEM FwCfgItem;\r | |
69 | UINTN FwCfgSize;\r | |
70 | \r | |
71 | Status = QemuFwCfgFindFile ("etc/tpm/config", &FwCfgItem, &FwCfgSize);\r | |
72 | if (EFI_ERROR (Status)) {\r | |
73 | return Status;\r | |
74 | }\r | |
75 | \r | |
76 | if (FwCfgSize != sizeof (*Config)) {\r | |
77 | return EFI_PROTOCOL_ERROR;\r | |
78 | }\r | |
79 | \r | |
80 | QemuFwCfgSelectItem (FwCfgItem);\r | |
81 | QemuFwCfgReadBytes (sizeof (*Config), Config);\r | |
82 | return EFI_SUCCESS;\r | |
83 | }\r | |
84 | \r | |
85 | \r | |
86 | /**\r | |
87 | Initializes QEMU PPI memory region.\r | |
88 | \r | |
89 | @retval EFI_SUCCESS Operation completed successfully.\r | |
90 | @retval EFI_PROTOCOL_ERROR PPI address is invalid.\r | |
91 | **/\r | |
92 | STATIC\r | |
93 | EFI_STATUS\r | |
94 | QemuTpmInitPPI (\r | |
95 | VOID\r | |
96 | )\r | |
97 | {\r | |
98 | EFI_STATUS Status;\r | |
99 | QEMU_FWCFG_TPM_CONFIG Config;\r | |
100 | EFI_PHYSICAL_ADDRESS PpiAddress64;\r | |
101 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;\r | |
102 | UINTN Idx;\r | |
103 | \r | |
104 | if (mPpi != NULL) {\r | |
105 | return EFI_SUCCESS;\r | |
106 | }\r | |
107 | \r | |
108 | Status = QemuTpmReadConfig (&Config);\r | |
109 | if (EFI_ERROR (Status)) {\r | |
110 | return Status;\r | |
111 | }\r | |
112 | \r | |
113 | mPpi = (QEMU_TPM_PPI *)(UINTN)Config.PpiAddress;\r | |
114 | if (mPpi == NULL) {\r | |
115 | return EFI_PROTOCOL_ERROR;\r | |
116 | }\r | |
117 | \r | |
118 | DEBUG ((DEBUG_INFO, "[TPM2PP] mPpi=%p version=%d\n", mPpi, Config.TpmVersion));\r | |
119 | \r | |
120 | PpiAddress64 = (UINTN)mPpi;\r | |
121 | if ((PpiAddress64 & ~(UINT64)EFI_PAGE_MASK) !=\r | |
122 | ((PpiAddress64 + sizeof *mPpi - 1) & ~(UINT64)EFI_PAGE_MASK)) {\r | |
123 | DEBUG ((DEBUG_ERROR, "[TPM2PP] mPpi crosses a page boundary\n"));\r | |
124 | goto InvalidPpiAddress;\r | |
125 | }\r | |
126 | \r | |
127 | Status = gDS->GetMemorySpaceDescriptor (PpiAddress64, &Descriptor);\r | |
128 | if (EFI_ERROR (Status) && Status != EFI_NOT_FOUND) {\r | |
129 | ASSERT_EFI_ERROR (Status);\r | |
130 | goto InvalidPpiAddress;\r | |
131 | }\r | |
132 | if (!EFI_ERROR (Status) &&\r | |
133 | (Descriptor.GcdMemoryType != EfiGcdMemoryTypeMemoryMappedIo &&\r | |
134 | Descriptor.GcdMemoryType != EfiGcdMemoryTypeNonExistent)) {\r | |
135 | DEBUG ((DEBUG_ERROR, "[TPM2PP] mPpi has an invalid memory type\n"));\r | |
136 | goto InvalidPpiAddress;\r | |
137 | }\r | |
138 | \r | |
139 | for (Idx = 0; Idx < ARRAY_SIZE (mPpi->Func); Idx++) {\r | |
140 | mPpi->Func[Idx] = 0;\r | |
141 | }\r | |
142 | if (Config.TpmVersion == QEMU_TPM_VERSION_2) {\r | |
143 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_NO_ACTION] = TPM_PPI_FLAGS;\r | |
144 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_CLEAR] = TPM_PPI_FLAGS;\r | |
145 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR] = TPM_PPI_FLAGS;\r | |
146 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2] = TPM_PPI_FLAGS;\r | |
147 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3] = TPM_PPI_FLAGS;\r | |
148 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS] = TPM_PPI_FLAGS;\r | |
149 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_CHANGE_EPS] = TPM_PPI_FLAGS;\r | |
150 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS] = TPM_PPI_FLAGS;\r | |
151 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID] = TPM_PPI_FLAGS;\r | |
152 | mPpi->Func[TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID] = TPM_PPI_FLAGS;\r | |
153 | }\r | |
154 | \r | |
155 | if (mPpi->In == 0) {\r | |
156 | mPpi->In = 1;\r | |
157 | mPpi->Request = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r | |
158 | mPpi->LastRequest = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r | |
159 | mPpi->NextStep = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r | |
160 | }\r | |
161 | \r | |
162 | return EFI_SUCCESS;\r | |
163 | \r | |
164 | InvalidPpiAddress:\r | |
165 | mPpi = NULL;\r | |
166 | return EFI_PROTOCOL_ERROR;\r | |
167 | }\r | |
168 | \r | |
169 | \r | |
170 | /**\r | |
171 | Get string by string id from HII Interface.\r | |
172 | \r | |
173 | @param[in] Id String ID.\r | |
174 | \r | |
175 | @retval CHAR16 * String from ID.\r | |
176 | @retval NULL If error occurs.\r | |
177 | \r | |
178 | **/\r | |
179 | STATIC\r | |
180 | CHAR16 *\r | |
181 | Tcg2PhysicalPresenceGetStringById (\r | |
182 | IN EFI_STRING_ID Id\r | |
183 | )\r | |
184 | {\r | |
185 | return HiiGetString (mTcg2PpStringPackHandle, Id, NULL);\r | |
186 | }\r | |
187 | \r | |
188 | \r | |
189 | /**\r | |
190 | Send ClearControl and Clear command to TPM.\r | |
191 | \r | |
192 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
193 | \r | |
194 | @retval EFI_SUCCESS Operation completed successfully.\r | |
195 | @retval EFI_TIMEOUT The register can't run into the expected status in time.\r | |
196 | @retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.\r | |
197 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
198 | \r | |
199 | **/\r | |
200 | EFI_STATUS\r | |
201 | EFIAPI\r | |
202 | Tpm2CommandClear (\r | |
203 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
204 | )\r | |
205 | {\r | |
206 | EFI_STATUS Status;\r | |
207 | TPMS_AUTH_COMMAND *AuthSession;\r | |
208 | TPMS_AUTH_COMMAND LocalAuthSession;\r | |
209 | \r | |
210 | if (PlatformAuth == NULL) {\r | |
211 | AuthSession = NULL;\r | |
212 | } else {\r | |
213 | AuthSession = &LocalAuthSession;\r | |
214 | ZeroMem (&LocalAuthSession, sizeof (LocalAuthSession));\r | |
215 | LocalAuthSession.sessionHandle = TPM_RS_PW;\r | |
216 | LocalAuthSession.hmac.size = PlatformAuth->size;\r | |
217 | CopyMem (LocalAuthSession.hmac.buffer, PlatformAuth->buffer, PlatformAuth->size);\r | |
218 | }\r | |
219 | \r | |
220 | DEBUG ((DEBUG_INFO, "Tpm2ClearControl ... \n"));\r | |
221 | Status = Tpm2ClearControl (TPM_RH_PLATFORM, AuthSession, NO);\r | |
222 | DEBUG ((DEBUG_INFO, "Tpm2ClearControl - %r\n", Status));\r | |
223 | if (EFI_ERROR (Status)) {\r | |
224 | goto Done;\r | |
225 | }\r | |
226 | DEBUG ((DEBUG_INFO, "Tpm2Clear ... \n"));\r | |
227 | Status = Tpm2Clear (TPM_RH_PLATFORM, AuthSession);\r | |
228 | DEBUG ((DEBUG_INFO, "Tpm2Clear - %r\n", Status));\r | |
229 | \r | |
230 | Done:\r | |
231 | ZeroMem (&LocalAuthSession.hmac, sizeof (LocalAuthSession.hmac));\r | |
232 | return Status;\r | |
233 | }\r | |
234 | \r | |
235 | \r | |
236 | /**\r | |
237 | Change EPS.\r | |
238 | \r | |
239 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
240 | \r | |
241 | @retval EFI_SUCCESS Operation completed successfully.\r | |
242 | **/\r | |
243 | STATIC\r | |
244 | EFI_STATUS\r | |
245 | Tpm2CommandChangeEps (\r | |
246 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
247 | )\r | |
248 | {\r | |
249 | EFI_STATUS Status;\r | |
250 | TPMS_AUTH_COMMAND *AuthSession;\r | |
251 | TPMS_AUTH_COMMAND LocalAuthSession;\r | |
252 | \r | |
253 | if (PlatformAuth == NULL) {\r | |
254 | AuthSession = NULL;\r | |
255 | } else {\r | |
256 | AuthSession = &LocalAuthSession;\r | |
257 | ZeroMem (&LocalAuthSession, sizeof (LocalAuthSession));\r | |
258 | LocalAuthSession.sessionHandle = TPM_RS_PW;\r | |
259 | LocalAuthSession.hmac.size = PlatformAuth->size;\r | |
260 | CopyMem (LocalAuthSession.hmac.buffer, PlatformAuth->buffer, PlatformAuth->size);\r | |
261 | }\r | |
262 | \r | |
263 | Status = Tpm2ChangeEPS (TPM_RH_PLATFORM, AuthSession);\r | |
264 | DEBUG ((DEBUG_INFO, "Tpm2ChangeEPS - %r\n", Status));\r | |
265 | \r | |
266 | ZeroMem (&LocalAuthSession.hmac, sizeof(LocalAuthSession.hmac));\r | |
267 | return Status;\r | |
268 | }\r | |
269 | \r | |
270 | \r | |
271 | /**\r | |
272 | Execute physical presence operation requested by the OS.\r | |
273 | \r | |
274 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
275 | @param[in] CommandCode Physical presence operation value.\r | |
276 | @param[in] CommandParameter Physical presence operation parameter.\r | |
277 | \r | |
278 | @retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Unknown physical presence operation.\r | |
279 | @retval TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE Error occurred during sending command to TPM or\r | |
280 | receiving response from TPM.\r | |
281 | @retval Others Return code from the TPM device after command execution.\r | |
282 | **/\r | |
283 | STATIC\r | |
284 | UINT32\r | |
285 | Tcg2ExecutePhysicalPresence (\r | |
286 | IN TPM2B_AUTH *PlatformAuth, OPTIONAL\r | |
287 | IN UINT32 CommandCode,\r | |
288 | IN UINT32 CommandParameter\r | |
289 | )\r | |
290 | {\r | |
291 | EFI_STATUS Status;\r | |
292 | EFI_TCG2_EVENT_ALGORITHM_BITMAP TpmHashAlgorithmBitmap;\r | |
293 | UINT32 ActivePcrBanks;\r | |
294 | \r | |
295 | switch (CommandCode) {\r | |
296 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
297 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
298 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
299 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
300 | Status = Tpm2CommandClear (PlatformAuth);\r | |
301 | if (EFI_ERROR (Status)) {\r | |
302 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
303 | } else {\r | |
304 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
305 | }\r | |
306 | \r | |
307 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
308 | Status = Tpm2GetCapabilitySupportedAndActivePcrs (&TpmHashAlgorithmBitmap, &ActivePcrBanks);\r | |
309 | ASSERT_EFI_ERROR (Status);\r | |
310 | \r | |
311 | //\r | |
312 | // PP spec requirements:\r | |
313 | // Firmware should check that all requested (set) hashing algorithms are supported with respective PCR banks.\r | |
314 | // Firmware has to ensure that at least one PCR banks is active.\r | |
315 | // If not, an error is returned and no action is taken.\r | |
316 | //\r | |
317 | if (CommandParameter == 0 || (CommandParameter & (~TpmHashAlgorithmBitmap)) != 0) {\r | |
318 | DEBUG((DEBUG_ERROR, "PCR banks %x to allocate are not supported by TPM. Skip operation\n", CommandParameter));\r | |
319 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
320 | }\r | |
321 | \r | |
322 | Status = Tpm2PcrAllocateBanks (PlatformAuth, TpmHashAlgorithmBitmap, CommandParameter);\r | |
323 | if (EFI_ERROR (Status)) {\r | |
324 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
325 | } else {\r | |
326 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
327 | }\r | |
328 | \r | |
329 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
330 | Status = Tpm2CommandChangeEps (PlatformAuth);\r | |
331 | if (EFI_ERROR (Status)) {\r | |
332 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
333 | } else {\r | |
334 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
335 | }\r | |
336 | \r | |
337 | case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:\r | |
338 | Status = Tpm2GetCapabilitySupportedAndActivePcrs (&TpmHashAlgorithmBitmap, &ActivePcrBanks);\r | |
339 | ASSERT_EFI_ERROR (Status);\r | |
340 | Status = Tpm2PcrAllocateBanks (PlatformAuth, TpmHashAlgorithmBitmap, TpmHashAlgorithmBitmap);\r | |
341 | if (EFI_ERROR (Status)) {\r | |
342 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
343 | } else {\r | |
344 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
345 | }\r | |
346 | \r | |
347 | default:\r | |
348 | if (CommandCode <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {\r | |
349 | return TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
350 | } else {\r | |
351 | return TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
352 | }\r | |
353 | }\r | |
354 | }\r | |
355 | \r | |
356 | \r | |
357 | /**\r | |
358 | Read the specified key for user confirmation.\r | |
359 | \r | |
360 | @param[in] CautionKey If true, F12 is used as confirm key;\r | |
361 | If false, F10 is used as confirm key.\r | |
362 | \r | |
363 | @retval TRUE User confirmed the changes by input.\r | |
364 | @retval FALSE User discarded the changes.\r | |
365 | **/\r | |
366 | STATIC\r | |
367 | BOOLEAN\r | |
368 | Tcg2ReadUserKey (\r | |
369 | IN BOOLEAN CautionKey\r | |
370 | )\r | |
371 | {\r | |
372 | EFI_STATUS Status;\r | |
373 | EFI_INPUT_KEY Key;\r | |
374 | UINT16 InputKey;\r | |
375 | \r | |
376 | InputKey = 0;\r | |
377 | do {\r | |
378 | Status = gBS->CheckEvent (gST->ConIn->WaitForKey);\r | |
379 | if (!EFI_ERROR (Status)) {\r | |
380 | Status = gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);\r | |
381 | if (Key.ScanCode == SCAN_ESC) {\r | |
382 | InputKey = Key.ScanCode;\r | |
383 | }\r | |
384 | if ((Key.ScanCode == SCAN_F10) && !CautionKey) {\r | |
385 | InputKey = Key.ScanCode;\r | |
386 | }\r | |
387 | if ((Key.ScanCode == SCAN_F12) && CautionKey) {\r | |
388 | InputKey = Key.ScanCode;\r | |
389 | }\r | |
390 | }\r | |
391 | } while (InputKey == 0);\r | |
392 | \r | |
393 | if (InputKey != SCAN_ESC) {\r | |
394 | return TRUE;\r | |
395 | }\r | |
396 | \r | |
397 | return FALSE;\r | |
398 | }\r | |
399 | \r | |
400 | \r | |
401 | /**\r | |
402 | Fill Buffer With BootHashAlg.\r | |
403 | \r | |
404 | @param[in] Buffer Buffer to be filled.\r | |
405 | @param[in] BufferSize Size of buffer.\r | |
406 | @param[in] BootHashAlg BootHashAlg.\r | |
407 | \r | |
408 | **/\r | |
409 | STATIC\r | |
410 | VOID\r | |
411 | Tcg2FillBufferWithBootHashAlg (\r | |
412 | IN UINT16 *Buffer,\r | |
413 | IN UINTN BufferSize,\r | |
414 | IN UINT32 BootHashAlg\r | |
415 | )\r | |
416 | {\r | |
417 | Buffer[0] = 0;\r | |
418 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA1) != 0) {\r | |
419 | if (Buffer[0] != 0) {\r | |
420 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
421 | }\r | |
422 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA1", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
423 | }\r | |
424 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA256) != 0) {\r | |
425 | if (Buffer[0] != 0) {\r | |
426 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
427 | }\r | |
428 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
429 | }\r | |
430 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA384) != 0) {\r | |
431 | if (Buffer[0] != 0) {\r | |
432 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
433 | }\r | |
434 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA384", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
435 | }\r | |
436 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SHA512) != 0) {\r | |
437 | if (Buffer[0] != 0) {\r | |
438 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
439 | }\r | |
440 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SHA512", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
441 | }\r | |
442 | if ((BootHashAlg & EFI_TCG2_BOOT_HASH_ALG_SM3_256) != 0) {\r | |
443 | if (Buffer[0] != 0) {\r | |
444 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L", ", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
445 | }\r | |
446 | StrnCatS (Buffer, BufferSize / sizeof (CHAR16), L"SM3_256", (BufferSize / sizeof (CHAR16)) - StrLen (Buffer) - 1);\r | |
447 | }\r | |
448 | }\r | |
449 | \r | |
450 | \r | |
451 | /**\r | |
452 | Display the confirm text and get user confirmation.\r | |
453 | \r | |
454 | @param[in] TpmPpCommand The requested TPM physical presence command.\r | |
455 | @param[in] TpmPpCommandParameter The requested TPM physical presence command parameter.\r | |
456 | \r | |
457 | @retval TRUE The user has confirmed the changes.\r | |
458 | @retval FALSE The user doesn't confirm the changes.\r | |
459 | **/\r | |
460 | STATIC\r | |
461 | BOOLEAN\r | |
462 | Tcg2UserConfirm (\r | |
463 | IN UINT32 TpmPpCommand,\r | |
464 | IN UINT32 TpmPpCommandParameter\r | |
465 | )\r | |
466 | {\r | |
467 | CHAR16 *ConfirmText;\r | |
468 | CHAR16 *TmpStr1;\r | |
469 | CHAR16 *TmpStr2;\r | |
470 | UINTN BufSize;\r | |
471 | BOOLEAN CautionKey;\r | |
472 | BOOLEAN NoPpiInfo;\r | |
473 | UINT16 Index;\r | |
474 | CHAR16 DstStr[81];\r | |
475 | CHAR16 TempBuffer[1024];\r | |
476 | CHAR16 TempBuffer2[1024];\r | |
477 | EFI_TCG2_PROTOCOL *Tcg2Protocol;\r | |
478 | EFI_TCG2_BOOT_SERVICE_CAPABILITY ProtocolCapability;\r | |
479 | UINT32 CurrentPCRBanks;\r | |
480 | EFI_STATUS Status;\r | |
481 | \r | |
482 | TmpStr2 = NULL;\r | |
483 | CautionKey = FALSE;\r | |
484 | NoPpiInfo = FALSE;\r | |
485 | BufSize = CONFIRM_BUFFER_SIZE;\r | |
486 | ConfirmText = AllocateZeroPool (BufSize);\r | |
487 | ASSERT (ConfirmText != NULL);\r | |
488 | \r | |
489 | mTcg2PpStringPackHandle = HiiAddPackages (&gEfiTcg2PhysicalPresenceGuid, gImageHandle, Tcg2PhysicalPresenceLibQemuStrings, NULL);\r | |
490 | ASSERT (mTcg2PpStringPackHandle != NULL);\r | |
491 | \r | |
492 | switch (TpmPpCommand) {\r | |
493 | \r | |
494 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
495 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
496 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
497 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
498 | CautionKey = TRUE;\r | |
499 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CLEAR));\r | |
500 | \r | |
501 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
502 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
503 | FreePool (TmpStr1);\r | |
504 | \r | |
505 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CLEAR));\r | |
506 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
507 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n\n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
508 | FreePool (TmpStr1);\r | |
509 | \r | |
510 | break;\r | |
511 | \r | |
512 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
513 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &Tcg2Protocol);\r | |
514 | ASSERT_EFI_ERROR (Status);\r | |
515 | \r | |
516 | ProtocolCapability.Size = sizeof(ProtocolCapability);\r | |
517 | Status = Tcg2Protocol->GetCapability (\r | |
518 | Tcg2Protocol,\r | |
519 | &ProtocolCapability\r | |
520 | );\r | |
521 | ASSERT_EFI_ERROR (Status);\r | |
522 | \r | |
523 | Status = Tcg2Protocol->GetActivePcrBanks (\r | |
524 | Tcg2Protocol,\r | |
525 | &CurrentPCRBanks\r | |
526 | );\r | |
527 | ASSERT_EFI_ERROR (Status);\r | |
528 | \r | |
529 | CautionKey = TRUE;\r | |
530 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_SET_PCR_BANKS));\r | |
531 | \r | |
532 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
533 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
534 | FreePool (TmpStr1);\r | |
535 | \r | |
536 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_SET_PCR_BANKS_1));\r | |
537 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
538 | FreePool (TmpStr1);\r | |
539 | \r | |
540 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_SET_PCR_BANKS_2));\r | |
541 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
542 | FreePool (TmpStr1);\r | |
543 | \r | |
544 | Tcg2FillBufferWithBootHashAlg (TempBuffer, sizeof(TempBuffer), TpmPpCommandParameter);\r | |
545 | Tcg2FillBufferWithBootHashAlg (TempBuffer2, sizeof(TempBuffer2), CurrentPCRBanks);\r | |
546 | \r | |
547 | TmpStr1 = AllocateZeroPool (BufSize);\r | |
548 | ASSERT (TmpStr1 != NULL);\r | |
549 | UnicodeSPrint (TmpStr1, BufSize, L"Current PCRBanks is 0x%x. (%s)\nNew PCRBanks is 0x%x. (%s)\n", CurrentPCRBanks, TempBuffer2, TpmPpCommandParameter, TempBuffer);\r | |
550 | \r | |
551 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
552 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), L" \n", (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
553 | FreePool (TmpStr1);\r | |
554 | \r | |
555 | break;\r | |
556 | \r | |
557 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
558 | CautionKey = TRUE;\r | |
559 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CHANGE_EPS));\r | |
560 | \r | |
561 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_HEAD_STR));\r | |
562 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
563 | FreePool (TmpStr1);\r | |
564 | \r | |
565 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CHANGE_EPS_1));\r | |
566 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
567 | FreePool (TmpStr1);\r | |
568 | \r | |
569 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_WARNING_CHANGE_EPS_2));\r | |
570 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
571 | FreePool (TmpStr1);\r | |
572 | \r | |
573 | break;\r | |
574 | \r | |
575 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r | |
576 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_ENABLE_BLOCK_SID));\r | |
577 | \r | |
578 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_HEAD_STR));\r | |
579 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
580 | FreePool (TmpStr1);\r | |
581 | break;\r | |
582 | \r | |
583 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
584 | TmpStr2 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_DISABLE_BLOCK_SID));\r | |
585 | \r | |
586 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_HEAD_STR));\r | |
587 | UnicodeSPrint (ConfirmText, BufSize, TmpStr1, TmpStr2);\r | |
588 | FreePool (TmpStr1);\r | |
589 | break;\r | |
590 | \r | |
591 | default:\r | |
592 | ;\r | |
593 | }\r | |
594 | \r | |
595 | if (TmpStr2 == NULL) {\r | |
596 | FreePool (ConfirmText);\r | |
597 | return FALSE;\r | |
598 | }\r | |
599 | \r | |
600 | if (TpmPpCommand < TCG2_PHYSICAL_PRESENCE_STORAGE_MANAGEMENT_BEGIN) {\r | |
601 | if (CautionKey) {\r | |
602 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_CAUTION_KEY));\r | |
603 | } else {\r | |
604 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_ACCEPT_KEY));\r | |
605 | }\r | |
606 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
607 | FreePool (TmpStr1);\r | |
608 | \r | |
609 | if (NoPpiInfo) {\r | |
610 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_NO_PPI_INFO));\r | |
611 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
612 | FreePool (TmpStr1);\r | |
613 | }\r | |
614 | \r | |
615 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TPM_REJECT_KEY));\r | |
616 | } else {\r | |
617 | if (CautionKey) {\r | |
618 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_CAUTION_KEY));\r | |
619 | } else {\r | |
620 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_ACCEPT_KEY));\r | |
621 | }\r | |
622 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
623 | FreePool (TmpStr1);\r | |
624 | \r | |
625 | if (NoPpiInfo) {\r | |
626 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_NO_PPI_INFO));\r | |
627 | StrnCatS (ConfirmText, BufSize / sizeof (CHAR16), TmpStr1, (BufSize / sizeof (CHAR16)) - StrLen (ConfirmText) - 1);\r | |
628 | FreePool (TmpStr1);\r | |
629 | }\r | |
630 | \r | |
631 | TmpStr1 = Tcg2PhysicalPresenceGetStringById (STRING_TOKEN (TCG_STORAGE_REJECT_KEY));\r | |
632 | }\r | |
633 | BufSize -= StrSize (ConfirmText);\r | |
634 | UnicodeSPrint (ConfirmText + StrLen (ConfirmText), BufSize, TmpStr1, TmpStr2);\r | |
635 | \r | |
636 | DstStr[80] = L'\0';\r | |
637 | for (Index = 0; Index < StrLen (ConfirmText); Index += 80) {\r | |
638 | StrnCpyS (DstStr, sizeof (DstStr) / sizeof (CHAR16), ConfirmText + Index, sizeof (DstStr) / sizeof (CHAR16) - 1);\r | |
639 | Print (DstStr);\r | |
640 | }\r | |
641 | \r | |
642 | FreePool (TmpStr1);\r | |
643 | FreePool (TmpStr2);\r | |
644 | FreePool (ConfirmText);\r | |
645 | HiiRemovePackages (mTcg2PpStringPackHandle);\r | |
646 | \r | |
647 | if (Tcg2ReadUserKey (CautionKey)) {\r | |
648 | return TRUE;\r | |
649 | }\r | |
650 | \r | |
651 | return FALSE;\r | |
652 | }\r | |
653 | \r | |
654 | \r | |
655 | /**\r | |
656 | Check if there is a valid physical presence command request. Also updates parameter value\r | |
657 | to whether the requested physical presence command already confirmed by user\r | |
658 | \r | |
659 | @param[out] RequestConfirmed If the physical presence operation command required user confirm from UI.\r | |
660 | True, it indicates the command doesn't require user confirm, or already confirmed\r | |
661 | in last boot cycle by user.\r | |
662 | False, it indicates the command need user confirm from UI.\r | |
663 | \r | |
664 | @retval TRUE Physical Presence operation command is valid.\r | |
665 | @retval FALSE Physical Presence operation command is invalid.\r | |
666 | \r | |
667 | **/\r | |
668 | STATIC\r | |
669 | BOOLEAN\r | |
670 | Tcg2HaveValidTpmRequest (\r | |
671 | OUT BOOLEAN *RequestConfirmed\r | |
672 | )\r | |
673 | {\r | |
674 | EFI_TCG2_PROTOCOL *Tcg2Protocol;\r | |
675 | EFI_STATUS Status;\r | |
676 | \r | |
677 | *RequestConfirmed = FALSE;\r | |
678 | \r | |
679 | if (mPpi->Request <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {\r | |
680 | //\r | |
681 | // Need TCG2 protocol.\r | |
682 | //\r | |
683 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &Tcg2Protocol);\r | |
684 | if (EFI_ERROR (Status)) {\r | |
685 | return FALSE;\r | |
686 | }\r | |
687 | }\r | |
688 | \r | |
689 | switch (mPpi->Request) {\r | |
690 | case TCG2_PHYSICAL_PRESENCE_NO_ACTION:\r | |
691 | case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:\r | |
692 | *RequestConfirmed = TRUE;\r | |
693 | return TRUE;\r | |
694 | \r | |
695 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
696 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
697 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
698 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
699 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
700 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
701 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r | |
702 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
703 | break;\r | |
704 | \r | |
705 | default:\r | |
706 | //\r | |
707 | // Wrong Physical Presence command\r | |
708 | //\r | |
709 | return FALSE;\r | |
710 | }\r | |
711 | \r | |
712 | //\r | |
713 | // Physical Presence command is correct\r | |
714 | //\r | |
715 | return TRUE;\r | |
716 | }\r | |
717 | \r | |
718 | \r | |
719 | /**\r | |
720 | Check and execute the requested physical presence command.\r | |
721 | \r | |
722 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
723 | **/\r | |
724 | STATIC\r | |
725 | VOID\r | |
726 | Tcg2ExecutePendingTpmRequest (\r | |
727 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
728 | )\r | |
729 | {\r | |
730 | BOOLEAN RequestConfirmed;\r | |
731 | \r | |
732 | if (mPpi->Request == TCG2_PHYSICAL_PRESENCE_NO_ACTION) {\r | |
733 | //\r | |
734 | // No operation request\r | |
735 | //\r | |
736 | return;\r | |
737 | }\r | |
738 | \r | |
739 | if (!Tcg2HaveValidTpmRequest (&RequestConfirmed)) {\r | |
740 | //\r | |
741 | // Invalid operation request.\r | |
742 | //\r | |
743 | if (mPpi->Request <= TCG2_PHYSICAL_PRESENCE_NO_ACTION_MAX) {\r | |
744 | mPpi->Response = TCG_PP_OPERATION_RESPONSE_SUCCESS;\r | |
745 | } else {\r | |
746 | mPpi->Response = TCG_PP_OPERATION_RESPONSE_BIOS_FAILURE;\r | |
747 | }\r | |
748 | mPpi->LastRequest = mPpi->Request;\r | |
749 | mPpi->Request = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r | |
750 | mPpi->RequestParameter = 0;\r | |
751 | return;\r | |
752 | }\r | |
753 | \r | |
754 | if (!RequestConfirmed) {\r | |
755 | //\r | |
756 | // Print confirm text and wait for approval.\r | |
757 | //\r | |
758 | RequestConfirmed = Tcg2UserConfirm (mPpi->Request, mPpi->RequestParameter);\r | |
759 | }\r | |
760 | \r | |
761 | //\r | |
762 | // Execute requested physical presence command\r | |
763 | //\r | |
764 | mPpi->Response = TCG_PP_OPERATION_RESPONSE_USER_ABORT;\r | |
765 | if (RequestConfirmed) {\r | |
766 | mPpi->Response = Tcg2ExecutePhysicalPresence (\r | |
767 | PlatformAuth,\r | |
768 | mPpi->Request,\r | |
769 | mPpi->RequestParameter\r | |
770 | );\r | |
771 | }\r | |
772 | \r | |
773 | //\r | |
774 | // Clear request\r | |
775 | //\r | |
776 | mPpi->LastRequest = mPpi->Request;\r | |
777 | mPpi->Request = TCG2_PHYSICAL_PRESENCE_NO_ACTION;\r | |
778 | mPpi->RequestParameter = 0;\r | |
779 | \r | |
780 | if (mPpi->Response == TCG_PP_OPERATION_RESPONSE_USER_ABORT) {\r | |
781 | return;\r | |
782 | }\r | |
783 | \r | |
784 | //\r | |
785 | // Reset system to make new TPM settings in effect\r | |
786 | //\r | |
787 | switch (mPpi->LastRequest) {\r | |
788 | case TCG2_PHYSICAL_PRESENCE_CLEAR:\r | |
789 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR:\r | |
790 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_2:\r | |
791 | case TCG2_PHYSICAL_PRESENCE_ENABLE_CLEAR_3:\r | |
792 | case TCG2_PHYSICAL_PRESENCE_SET_PCR_BANKS:\r | |
793 | case TCG2_PHYSICAL_PRESENCE_CHANGE_EPS:\r | |
794 | case TCG2_PHYSICAL_PRESENCE_LOG_ALL_DIGESTS:\r | |
795 | break;\r | |
796 | \r | |
797 | case TCG2_PHYSICAL_PRESENCE_ENABLE_BLOCK_SID:\r | |
798 | case TCG2_PHYSICAL_PRESENCE_DISABLE_BLOCK_SID:\r | |
799 | break;\r | |
800 | \r | |
801 | default:\r | |
802 | if (mPpi->Request != TCG2_PHYSICAL_PRESENCE_NO_ACTION) {\r | |
803 | break;\r | |
804 | }\r | |
805 | return;\r | |
806 | }\r | |
807 | \r | |
808 | Print (L"Rebooting system to make TPM2 settings in effect\n");\r | |
809 | gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);\r | |
810 | ASSERT (FALSE);\r | |
811 | }\r | |
812 | \r | |
813 | \r | |
814 | /**\r | |
815 | Check and execute the pending TPM request.\r | |
816 | \r | |
817 | The TPM request may come from OS or BIOS. This API will display request information and wait\r | |
818 | for user confirmation if TPM request exists. The TPM request will be sent to TPM device after\r | |
819 | the TPM request is confirmed, and one or more reset may be required to make TPM request to\r | |
820 | take effect.\r | |
821 | \r | |
822 | This API should be invoked after console in and console out are all ready as they are required\r | |
823 | to display request information and get user input to confirm the request.\r | |
824 | \r | |
825 | @param[in] PlatformAuth platform auth value. NULL means no platform auth change.\r | |
826 | **/\r | |
827 | VOID\r | |
828 | EFIAPI\r | |
829 | Tcg2PhysicalPresenceLibProcessRequest (\r | |
830 | IN TPM2B_AUTH *PlatformAuth OPTIONAL\r | |
831 | )\r | |
832 | {\r | |
833 | EFI_STATUS Status;\r | |
834 | \r | |
835 | Status = QemuTpmInitPPI ();\r | |
836 | if (EFI_ERROR (Status)) {\r | |
837 | DEBUG ((DEBUG_INFO, "[TPM2PP] no PPI\n"));\r | |
838 | return ;\r | |
839 | }\r | |
840 | \r | |
841 | //\r | |
842 | // Check S4 resume\r | |
843 | //\r | |
844 | if (GetBootModeHob () == BOOT_ON_S4_RESUME) {\r | |
845 | DEBUG ((DEBUG_INFO, "S4 Resume, Skip TPM PP process!\n"));\r | |
846 | return ;\r | |
847 | }\r | |
848 | \r | |
849 | DEBUG ((DEBUG_INFO, "[TPM2PP] PPRequest=%x (PPRequestParameter=%x)\n", mPpi->Request, mPpi->RequestParameter));\r | |
850 | Tcg2ExecutePendingTpmRequest (PlatformAuth);\r | |
851 | }\r | |
852 | \r | |
853 | \r | |
854 | /**\r | |
855 | The handler for TPM physical presence function:\r | |
856 | Return TPM Operation Response to OS Environment.\r | |
857 | \r | |
858 | @param[out] MostRecentRequest Most recent operation request.\r | |
859 | @param[out] Response Response to the most recent operation request.\r | |
860 | \r | |
861 | @return Return Code for Return TPM Operation Response to OS Environment.\r | |
862 | **/\r | |
863 | UINT32\r | |
864 | EFIAPI\r | |
865 | Tcg2PhysicalPresenceLibReturnOperationResponseToOsFunction (\r | |
866 | OUT UINT32 *MostRecentRequest,\r | |
867 | OUT UINT32 *Response\r | |
868 | )\r | |
869 | {\r | |
870 | EFI_STATUS Status;\r | |
871 | \r | |
872 | DEBUG ((DEBUG_INFO, "[TPM2PP] ReturnOperationResponseToOsFunction\n"));\r | |
873 | \r | |
874 | Status = QemuTpmInitPPI ();\r | |
875 | if (EFI_ERROR (Status)) {\r | |
876 | DEBUG ((DEBUG_INFO, "[TPM2PP] no PPI\n"));\r | |
877 | *MostRecentRequest = 0;\r | |
878 | *Response = 0;\r | |
879 | return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_FAILURE;\r | |
880 | }\r | |
881 | \r | |
882 | *MostRecentRequest = mPpi->LastRequest;\r | |
883 | *Response = mPpi->Response;\r | |
884 | \r | |
885 | return TCG_PP_RETURN_TPM_OPERATION_RESPONSE_SUCCESS;\r | |
886 | }\r | |
887 | \r | |
888 | \r | |
889 | /**\r | |
890 | The handler for TPM physical presence function:\r | |
891 | Submit TPM Operation Request to Pre-OS Environment and\r | |
892 | Submit TPM Operation Request to Pre-OS Environment 2.\r | |
893 | \r | |
894 | Caution: This function may receive untrusted input.\r | |
895 | \r | |
896 | @param[in] OperationRequest TPM physical presence operation request.\r | |
897 | @param[in] RequestParameter TPM physical presence operation request parameter.\r | |
898 | \r | |
899 | @return Return Code for Submit TPM Operation Request to Pre-OS Environment and\r | |
900 | Submit TPM Operation Request to Pre-OS Environment 2.\r | |
901 | **/\r | |
902 | UINT32\r | |
903 | EFIAPI\r | |
904 | Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction (\r | |
905 | IN UINT32 OperationRequest,\r | |
906 | IN UINT32 RequestParameter\r | |
907 | )\r | |
908 | {\r | |
909 | EFI_STATUS Status;\r | |
910 | \r | |
911 | DEBUG ((DEBUG_INFO, "[TPM2PP] SubmitRequestToPreOSFunction, Request = %x, %x\n", OperationRequest, RequestParameter));\r | |
912 | \r | |
913 | Status = QemuTpmInitPPI ();\r | |
914 | if (EFI_ERROR (Status)) {\r | |
915 | DEBUG ((DEBUG_INFO, "[TPM2PP] no PPI\n"));\r | |
916 | return TCG_PP_SUBMIT_REQUEST_TO_PREOS_GENERAL_FAILURE;\r | |
917 | }\r | |
918 | \r | |
919 | mPpi->Request = OperationRequest;\r | |
920 | mPpi->RequestParameter = RequestParameter;\r | |
921 | \r | |
922 | return TCG_PP_SUBMIT_REQUEST_TO_PREOS_SUCCESS;\r | |
923 | }\r |