1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2013 The Chromium OS Authors. 4 * Coypright (c) 2013 Guntermann & Drunck GmbH 5 */ 6 7 #ifndef __TPM_V1_H 8 #define __TPM_V1_H 9 10 #include <tpm-common.h> 11 12 /* Useful constants */ 13 enum { 14 TPM_REQUEST_HEADER_LENGTH = 10, 15 TPM_RESPONSE_HEADER_LENGTH = 10, 16 PCR_DIGEST_LENGTH = 20, 17 DIGEST_LENGTH = 20, 18 TPM_REQUEST_AUTH_LENGTH = 45, 19 TPM_RESPONSE_AUTH_LENGTH = 41, 20 /* some max lengths, valid for RSA keys <= 2048 bits */ 21 TPM_KEY12_MAX_LENGTH = 618, 22 TPM_PUBKEY_MAX_LENGTH = 288, 23 }; 24 25 enum tpm_startup_type { 26 TPM_ST_CLEAR = 0x0001, 27 TPM_ST_STATE = 0x0002, 28 TPM_ST_DEACTIVATED = 0x0003, 29 }; 30 31 enum tpm_physical_presence { 32 TPM_PHYSICAL_PRESENCE_HW_DISABLE = 0x0200, 33 TPM_PHYSICAL_PRESENCE_CMD_DISABLE = 0x0100, 34 TPM_PHYSICAL_PRESENCE_LIFETIME_LOCK = 0x0080, 35 TPM_PHYSICAL_PRESENCE_HW_ENABLE = 0x0040, 36 TPM_PHYSICAL_PRESENCE_CMD_ENABLE = 0x0020, 37 TPM_PHYSICAL_PRESENCE_NOTPRESENT = 0x0010, 38 TPM_PHYSICAL_PRESENCE_PRESENT = 0x0008, 39 TPM_PHYSICAL_PRESENCE_LOCK = 0x0004, 40 }; 41 42 enum tpm_nv_index { 43 TPM_NV_INDEX_LOCK = 0xffffffff, 44 TPM_NV_INDEX_0 = 0x00000000, 45 TPM_NV_INDEX_DIR = 0x10000001, 46 }; 47 48 enum tpm_resource_type { 49 TPM_RT_KEY = 0x00000001, 50 TPM_RT_AUTH = 0x00000002, 51 TPM_RT_HASH = 0x00000003, 52 TPM_RT_TRANS = 0x00000004, 53 TPM_RT_CONTEXT = 0x00000005, 54 TPM_RT_COUNTER = 0x00000006, 55 TPM_RT_DELEGATE = 0x00000007, 56 TPM_RT_DAA_TPM = 0x00000008, 57 TPM_RT_DAA_V0 = 0x00000009, 58 TPM_RT_DAA_V1 = 0x0000000A, 59 }; 60 61 enum tpm_capability_areas { 62 TPM_CAP_ORD = 0x00000001, 63 TPM_CAP_ALG = 0x00000002, 64 TPM_CAP_PID = 0x00000003, 65 TPM_CAP_FLAG = 0x00000004, 66 TPM_CAP_PROPERTY = 0x00000005, 67 TPM_CAP_VERSION = 0x00000006, 68 TPM_CAP_KEY_HANDLE = 0x00000007, 69 TPM_CAP_CHECK_LOADED = 0x00000008, 70 TPM_CAP_SYM_MODE = 0x00000009, 71 TPM_CAP_KEY_STATUS = 0x0000000C, 72 TPM_CAP_NV_LIST = 0x0000000D, 73 TPM_CAP_MFR = 0x00000010, 74 TPM_CAP_NV_INDEX = 0x00000011, 75 TPM_CAP_TRANS_ALG = 0x00000012, 76 TPM_CAP_HANDLE = 0x00000014, 77 TPM_CAP_TRANS_ES = 0x00000015, 78 TPM_CAP_AUTH_ENCRYPT = 0x00000017, 79 TPM_CAP_SELECT_SIZE = 0x00000018, 80 TPM_CAP_DA_LOGIC = 0x00000019, 81 TPM_CAP_VERSION_VAL = 0x0000001A, 82 }; 83 84 enum tmp_cap_flag { 85 TPM_CAP_FLAG_PERMANENT = 0x108, 86 }; 87 88 #define TPM_TAG_PERMANENT_FLAGS 0x001f 89 90 #define TPM_NV_PER_GLOBALLOCK BIT(15) 91 #define TPM_NV_PER_PPREAD BIT(16) 92 #define TPM_NV_PER_PPWRITE BIT(0) 93 #define TPM_NV_PER_READ_STCLEAR BIT(31) 94 #define TPM_NV_PER_WRITE_STCLEAR BIT(14) 95 #define TPM_NV_PER_WRITEDEFINE BIT(13) 96 #define TPM_NV_PER_WRITEALL BIT(12) 97 98 enum { 99 TPM_PUBEK_SIZE = 256, 100 }; 101 102 enum { 103 TPM_CMD_EXTEND = 0x14, 104 TPM_CMD_GET_CAPABILITY = 0x65, 105 TPM_CMD_NV_DEFINE_SPACE = 0xcc, 106 TPM_CMD_NV_WRITE_VALUE = 0xcd, 107 TPM_CMD_NV_READ_VALUE = 0xcf, 108 }; 109 110 /** 111 * TPM return codes as defined in the TCG Main specification 112 * (TPM Main Part 2 Structures; Specification version 1.2) 113 */ 114 enum tpm_return_code { 115 TPM_BASE = 0x00000000, 116 TPM_NON_FATAL = 0x00000800, 117 TPM_SUCCESS = TPM_BASE, 118 /* TPM-defined fatal error codes */ 119 TPM_AUTHFAIL = TPM_BASE + 1, 120 TPM_BADINDEX = TPM_BASE + 2, 121 TPM_BAD_PARAMETER = TPM_BASE + 3, 122 TPM_AUDITFAILURE = TPM_BASE + 4, 123 TPM_CLEAR_DISABLED = TPM_BASE + 5, 124 TPM_DEACTIVATED = TPM_BASE + 6, 125 TPM_DISABLED = TPM_BASE + 7, 126 TPM_DISABLED_CMD = TPM_BASE + 8, 127 TPM_FAIL = TPM_BASE + 9, 128 TPM_BAD_ORDINAL = TPM_BASE + 10, 129 TPM_INSTALL_DISABLED = TPM_BASE + 11, 130 TPM_INVALID_KEYHANDLE = TPM_BASE + 12, 131 TPM_KEYNOTFOUND = TPM_BASE + 13, 132 TPM_INAPPROPRIATE_ENC = TPM_BASE + 14, 133 TPM_MIGRATE_FAIL = TPM_BASE + 15, 134 TPM_INVALID_PCR_INFO = TPM_BASE + 16, 135 TPM_NOSPACE = TPM_BASE + 17, 136 TPM_NOSRK = TPM_BASE + 18, 137 TPM_NOTSEALED_BLOB = TPM_BASE + 19, 138 TPM_OWNER_SET = TPM_BASE + 20, 139 TPM_RESOURCES = TPM_BASE + 21, 140 TPM_SHORTRANDOM = TPM_BASE + 22, 141 TPM_SIZE = TPM_BASE + 23, 142 TPM_WRONGPCRVAL = TPM_BASE + 24, 143 TPM_BAD_PARAM_SIZE = TPM_BASE + 25, 144 TPM_SHA_THREAD = TPM_BASE + 26, 145 TPM_SHA_ERROR = TPM_BASE + 27, 146 TPM_FAILEDSELFTEST = TPM_BASE + 28, 147 TPM_AUTH2FAIL = TPM_BASE + 29, 148 TPM_BADTAG = TPM_BASE + 30, 149 TPM_IOERROR = TPM_BASE + 31, 150 TPM_ENCRYPT_ERROR = TPM_BASE + 32, 151 TPM_DECRYPT_ERROR = TPM_BASE + 33, 152 TPM_INVALID_AUTHHANDLE = TPM_BASE + 34, 153 TPM_NO_ENDORSEMENT = TPM_BASE + 35, 154 TPM_INVALID_KEYUSAGE = TPM_BASE + 36, 155 TPM_WRONG_ENTITYTYPE = TPM_BASE + 37, 156 TPM_INVALID_POSTINIT = TPM_BASE + 38, 157 TPM_INAPPROPRIATE_SIG = TPM_BASE + 39, 158 TPM_BAD_KEY_PROPERTY = TPM_BASE + 40, 159 TPM_BAD_MIGRATION = TPM_BASE + 41, 160 TPM_BAD_SCHEME = TPM_BASE + 42, 161 TPM_BAD_DATASIZE = TPM_BASE + 43, 162 TPM_BAD_MODE = TPM_BASE + 44, 163 TPM_BAD_PRESENCE = TPM_BASE + 45, 164 TPM_BAD_VERSION = TPM_BASE + 46, 165 TPM_NO_WRAP_TRANSPORT = TPM_BASE + 47, 166 TPM_AUDITFAIL_UNSUCCESSFUL = TPM_BASE + 48, 167 TPM_AUDITFAIL_SUCCESSFUL = TPM_BASE + 49, 168 TPM_NOTRESETABLE = TPM_BASE + 50, 169 TPM_NOTLOCAL = TPM_BASE + 51, 170 TPM_BAD_TYPE = TPM_BASE + 52, 171 TPM_INVALID_RESOURCE = TPM_BASE + 53, 172 TPM_NOTFIPS = TPM_BASE + 54, 173 TPM_INVALID_FAMILY = TPM_BASE + 55, 174 TPM_NO_NV_PERMISSION = TPM_BASE + 56, 175 TPM_REQUIRES_SIGN = TPM_BASE + 57, 176 TPM_KEY_NOTSUPPORTED = TPM_BASE + 58, 177 TPM_AUTH_CONFLICT = TPM_BASE + 59, 178 TPM_AREA_LOCKED = TPM_BASE + 60, 179 TPM_BAD_LOCALITY = TPM_BASE + 61, 180 TPM_READ_ONLY = TPM_BASE + 62, 181 TPM_PER_NOWRITE = TPM_BASE + 63, 182 TPM_FAMILY_COUNT = TPM_BASE + 64, 183 TPM_WRITE_LOCKED = TPM_BASE + 65, 184 TPM_BAD_ATTRIBUTES = TPM_BASE + 66, 185 TPM_INVALID_STRUCTURE = TPM_BASE + 67, 186 TPM_KEY_OWNER_CONTROL = TPM_BASE + 68, 187 TPM_BAD_COUNTER = TPM_BASE + 69, 188 TPM_NOT_FULLWRITE = TPM_BASE + 70, 189 TPM_CONTEXT_GAP = TPM_BASE + 71, 190 TPM_MAXNVWRITES = TPM_BASE + 72, 191 TPM_NOOPERATOR = TPM_BASE + 73, 192 TPM_RESOURCEMISSING = TPM_BASE + 74, 193 TPM_DELEGATE_LOCK = TPM_BASE + 75, 194 TPM_DELEGATE_FAMILY = TPM_BASE + 76, 195 TPM_DELEGATE_ADMIN = TPM_BASE + 77, 196 TPM_TRANSPORT_NOTEXCLUSIVE = TPM_BASE + 78, 197 TPM_OWNER_CONTROL = TPM_BASE + 79, 198 TPM_DAA_RESOURCES = TPM_BASE + 80, 199 TPM_DAA_INPUT_DATA0 = TPM_BASE + 81, 200 TPM_DAA_INPUT_DATA1 = TPM_BASE + 82, 201 TPM_DAA_ISSUER_SETTINGS = TPM_BASE + 83, 202 TPM_DAA_TPM_SETTINGS = TPM_BASE + 84, 203 TPM_DAA_STAGE = TPM_BASE + 85, 204 TPM_DAA_ISSUER_VALIDITY = TPM_BASE + 86, 205 TPM_DAA_WRONG_W = TPM_BASE + 87, 206 TPM_BAD_HANDLE = TPM_BASE + 88, 207 TPM_BAD_DELEGATE = TPM_BASE + 89, 208 TPM_BADCONTEXT = TPM_BASE + 90, 209 TPM_TOOMANYCONTEXTS = TPM_BASE + 91, 210 TPM_MA_TICKET_SIGNATURE = TPM_BASE + 92, 211 TPM_MA_DESTINATION = TPM_BASE + 93, 212 TPM_MA_SOURCE = TPM_BASE + 94, 213 TPM_MA_AUTHORITY = TPM_BASE + 95, 214 TPM_PERMANENTEK = TPM_BASE + 97, 215 TPM_BAD_SIGNATURE = TPM_BASE + 98, 216 TPM_NOCONTEXTSPACE = TPM_BASE + 99, 217 /* TPM-defined non-fatal errors */ 218 TPM_RETRY = TPM_BASE + TPM_NON_FATAL, 219 TPM_NEEDS_SELFTEST = TPM_BASE + TPM_NON_FATAL + 1, 220 TPM_DOING_SELFTEST = TPM_BASE + TPM_NON_FATAL + 2, 221 TPM_DEFEND_LOCK_RUNNING = TPM_BASE + TPM_NON_FATAL + 3, 222 }; 223 224 struct tpm_permanent_flags { 225 __be16 tag; 226 u8 disable; 227 u8 ownership; 228 u8 deactivated; 229 u8 read_pubek; 230 u8 disable_owner_clear; 231 u8 allow_maintenance; 232 u8 physical_presence_lifetime_lock; 233 u8 physical_presence_hw_enable; 234 u8 physical_presence_cmd_enable; 235 u8 cekp_used; 236 u8 tpm_post; 237 u8 tpm_post_lock; 238 u8 fips; 239 u8 operator; 240 u8 enable_revoke_ek; 241 u8 nv_locked; 242 u8 read_srk_pub; 243 u8 tpm_established; 244 u8 maintenance_done; 245 u8 disable_full_da_logic_info; 246 } __packed; 247 248 #define TPM_SHA1_160_HASH_LEN 0x14 249 250 struct __packed tpm_composite_hash { 251 u8 digest[TPM_SHA1_160_HASH_LEN]; 252 }; 253 254 struct __packed tpm_pcr_selection { 255 __be16 size_of_select; 256 u8 pcr_select[3]; /* matches vboot's struct */ 257 }; 258 259 struct __packed tpm_pcr_info_short { 260 struct tpm_pcr_selection pcr_selection; 261 u8 locality_at_release; 262 struct tpm_composite_hash digest_at_release; 263 }; 264 265 struct __packed tpm_nv_attributes { 266 __be16 tag; 267 __be32 attributes; 268 }; 269 270 struct __packed tpm_nv_data_public { 271 __be16 tag; 272 __be32 nv_index; 273 struct tpm_pcr_info_short pcr_info_read; 274 struct tpm_pcr_info_short pcr_info_write; 275 struct tpm_nv_attributes permission; 276 u8 read_st_clear; 277 u8 write_st_clear; 278 u8 write_define; 279 __be32 data_size; 280 }; 281 282 /** 283 * Issue a TPM_Startup command. 284 * 285 * @param dev TPM device 286 * @param mode TPM startup mode 287 * @return return code of the operation 288 */ 289 u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode); 290 291 /** 292 * Issue a TPM_SelfTestFull command. 293 * 294 * @param dev TPM device 295 * @return return code of the operation 296 */ 297 u32 tpm_self_test_full(struct udevice *dev); 298 299 /** 300 * Issue a TPM_ContinueSelfTest command. 301 * 302 * @param dev TPM device 303 * @return return code of the operation 304 */ 305 u32 tpm_continue_self_test(struct udevice *dev); 306 307 /** 308 * Issue a TPM_NV_DefineSpace command. The implementation is limited 309 * to specify TPM_NV_ATTRIBUTES and size of the area. The area index 310 * could be one of the special value listed in enum tpm_nv_index. 311 * 312 * @param dev TPM device 313 * @param index index of the area 314 * @param perm TPM_NV_ATTRIBUTES of the area 315 * @param size size of the area 316 * @return return code of the operation 317 */ 318 u32 tpm_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size); 319 320 /** 321 * Issue a TPM_NV_ReadValue command. This implementation is limited 322 * to read the area from offset 0. The area index could be one of 323 * the special value listed in enum tpm_nv_index. 324 * 325 * @param dev TPM device 326 * @param index index of the area 327 * @param data output buffer of the area contents 328 * @param count size of output buffer 329 * @return return code of the operation 330 */ 331 u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count); 332 333 /** 334 * Issue a TPM_NV_WriteValue command. This implementation is limited 335 * to write the area from offset 0. The area index could be one of 336 * the special value listed in enum tpm_nv_index. 337 * 338 * @param dev TPM device 339 * @param index index of the area 340 * @param data input buffer to be wrote to the area 341 * @param length length of data bytes of input buffer 342 * @return return code of the operation 343 */ 344 u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data, 345 u32 length); 346 347 /** 348 * Issue a TPM_Extend command. 349 * 350 * @param dev TPM device 351 * @param index index of the PCR 352 * @param in_digest 160-bit value representing the event to be 353 * recorded 354 * @param out_digest 160-bit PCR value after execution of the 355 * command 356 * @return return code of the operation 357 */ 358 u32 tpm_extend(struct udevice *dev, u32 index, const void *in_digest, 359 void *out_digest); 360 361 /** 362 * Issue a TPM_PCRRead command. 363 * 364 * @param dev TPM device 365 * @param index index of the PCR 366 * @param data output buffer for contents of the named PCR 367 * @param count size of output buffer 368 * @return return code of the operation 369 */ 370 u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count); 371 372 /** 373 * Issue a TSC_PhysicalPresence command. TPM physical presence flag 374 * is bit-wise OR'ed of flags listed in enum tpm_physical_presence. 375 * 376 * @param dev TPM device 377 * @param presence TPM physical presence flag 378 * @return return code of the operation 379 */ 380 u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence); 381 382 /** 383 * Issue a TPM_ReadPubek command. 384 * 385 * @param dev TPM device 386 * @param data output buffer for the public endorsement key 387 * @param count size of output buffer 388 * @return return code of the operation 389 */ 390 u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count); 391 392 /** 393 * Issue a TPM_ForceClear command. 394 * 395 * @param dev TPM device 396 * @return return code of the operation 397 */ 398 u32 tpm_force_clear(struct udevice *dev); 399 400 /** 401 * Issue a TPM_PhysicalEnable command. 402 * 403 * @param dev TPM device 404 * @return return code of the operation 405 */ 406 u32 tpm_physical_enable(struct udevice *dev); 407 408 /** 409 * Issue a TPM_PhysicalDisable command. 410 * 411 * @param dev TPM device 412 * @return return code of the operation 413 */ 414 u32 tpm_physical_disable(struct udevice *dev); 415 416 /** 417 * Issue a TPM_PhysicalSetDeactivated command. 418 * 419 * @param dev TPM device 420 * @param state boolean state of the deactivated flag 421 * @return return code of the operation 422 */ 423 u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state); 424 425 /** 426 * Issue a TPM_GetCapability command. This implementation is limited 427 * to query sub_cap index that is 4-byte wide. 428 * 429 * @param dev TPM device 430 * @param cap_area partition of capabilities 431 * @param sub_cap further definition of capability, which is 432 * limited to be 4-byte wide 433 * @param cap output buffer for capability information 434 * @param count size of output buffer 435 * @return return code of the operation 436 */ 437 u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap, 438 void *cap, size_t count); 439 440 /** 441 * Issue a TPM_FlushSpecific command for a AUTH resource. 442 * 443 * @param dev TPM device 444 * @param auth_handle handle of the auth session 445 * @return return code of the operation 446 */ 447 u32 tpm_terminate_auth_session(struct udevice *dev, u32 auth_handle); 448 449 /** 450 * Issue a TPM_OIAP command to setup an object independent authorization 451 * session. 452 * Information about the session is stored internally. 453 * If there was already an OIAP session active it is terminated and a new 454 * session is set up. 455 * 456 * @param dev TPM device 457 * @param auth_handle pointer to the (new) auth handle or NULL. 458 * @return return code of the operation 459 */ 460 u32 tpm_oiap(struct udevice *dev, u32 *auth_handle); 461 462 /** 463 * Ends an active OIAP session. 464 * 465 * @param dev TPM device 466 * @return return code of the operation 467 */ 468 u32 tpm_end_oiap(struct udevice *dev); 469 470 /** 471 * Issue a TPM_LoadKey2 (Auth1) command using an OIAP session for authenticating 472 * the usage of the parent key. 473 * 474 * @param dev TPM device 475 * @param parent_handle handle of the parent key. 476 * @param key pointer to the key structure (TPM_KEY or TPM_KEY12). 477 * @param key_length size of the key structure 478 * @param parent_key_usage_auth usage auth for the parent key 479 * @param key_handle pointer to the key handle 480 * @return return code of the operation 481 */ 482 u32 tpm_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key, 483 size_t key_length, const void *parent_key_usage_auth, 484 u32 *key_handle); 485 486 /** 487 * Issue a TPM_GetPubKey (Auth1) command using an OIAP session for 488 * authenticating the usage of the key. 489 * 490 * @param dev TPM device 491 * @param key_handle handle of the key 492 * @param usage_auth usage auth for the key 493 * @param pubkey pointer to the pub key buffer; may be NULL if the pubkey 494 * should not be stored. 495 * @param pubkey_len pointer to the pub key buffer len. On entry: the size of 496 * the provided pubkey buffer. On successful exit: the size 497 * of the stored TPM_PUBKEY structure (iff pubkey != NULL). 498 * @return return code of the operation 499 */ 500 u32 tpm_get_pub_key_oiap(struct udevice *dev, u32 key_handle, 501 const void *usage_auth, void *pubkey, 502 size_t *pubkey_len); 503 504 /** 505 * Get the TPM permanent flags value 506 * 507 * @param dev TPM device 508 * @param pflags Place to put permanent flags 509 * @return return code of the operation 510 */ 511 u32 tpm_get_permanent_flags(struct udevice *dev, 512 struct tpm_permanent_flags *pflags); 513 514 /** 515 * Get the TPM permissions 516 * 517 * @param dev TPM device 518 * @param perm Returns permissions value 519 * @return return code of the operation 520 */ 521 u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm); 522 523 /** 524 * Flush a resource with a given handle and type from the TPM 525 * 526 * @param dev TPM device 527 * @param key_handle handle of the resource 528 * @param resource_type type of the resource 529 * @return return code of the operation 530 */ 531 u32 tpm_flush_specific(struct udevice *dev, u32 key_handle, u32 resource_type); 532 533 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1 534 /** 535 * Search for a key by usage AuthData and the hash of the parent's pub key. 536 * 537 * @param dev TPM device 538 * @param auth Usage auth of the key to search for 539 * @param pubkey_digest SHA1 hash of the pub key structure of the key 540 * @param[out] handle The handle of the key (Non-null iff found) 541 * @return 0 if key was found in TPM; != 0 if not. 542 */ 543 u32 tpm_find_key_sha1(struct udevice *dev, const u8 auth[20], 544 const u8 pubkey_digest[20], u32 *handle); 545 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */ 546 547 /** 548 * Read random bytes from the TPM RNG. The implementation deals with the fact 549 * that the TPM may legally return fewer bytes than requested by retrying 550 * until @p count bytes have been received. 551 * 552 * @param dev TPM device 553 * @param data output buffer for the random bytes 554 * @param count size of output buffer 555 * @return return code of the operation 556 */ 557 u32 tpm_get_random(struct udevice *dev, void *data, u32 count); 558 559 /** 560 * tpm_finalise_physical_presence() - Finalise physical presence 561 * 562 * @param dev TPM device 563 * @return return code of the operation (0 = success) 564 */ 565 u32 tpm_finalise_physical_presence(struct udevice *dev); 566 567 /** 568 * tpm_nv_set_locked() - lock the non-volatile space 569 * 570 * @param dev TPM device 571 * @return return code of the operation (0 = success) 572 */ 573 u32 tpm_nv_set_locked(struct udevice *dev); 574 575 /** 576 * tpm_set_global_lock() - set the global lock 577 * 578 * @param dev TPM device 579 * @return return code of the operation (0 = success) 580 */ 581 u32 tpm_set_global_lock(struct udevice *dev); 582 583 /** 584 * tpm_resume() - start up the TPM from resume (after suspend) 585 * 586 * @param dev TPM device 587 * @return return code of the operation (0 = success) 588 */ 589 u32 tpm_resume(struct udevice *dev); 590 591 #endif /* __TPM_V1_H */ 592