cmd/tpm_test.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2015 Google, Inc
   4  */
   5
   6 #include <common.h>
   7 #include <command.h>
   8 #include <cpu_func.h>
   9 #include <log.h>
  10 #include <tpm-v1.h>
  11 #include "tpm-user-utils.h"
  12 #include <tpm_api.h>
  13
  14 /* Prints error and returns on failure */
  15 #define TPM_CHECK(tpm_command) do { \
  16         uint32_t result; \
  17         \
  18         result = (tpm_command); \
  19         if (result != TPM_SUCCESS) { \
  20                 printf("TEST FAILED: line %d: " #tpm_command ": 0x%x\n", \
  21                         __LINE__, result); \
  22                 return result; \
  23         } \
  24 } while (0)
  25
  26 #define INDEX0                  0xda70
  27 #define INDEX1                  0xda71
  28 #define INDEX2                  0xda72
  29 #define INDEX3                  0xda73
  30 #define INDEX_INITIALISED       0xda80
  31 #define PHYS_PRESENCE           4
  32 #define PRESENCE                8
  33
  34 static uint32_t TlclStartupIfNeeded(struct udevice *dev)
  35 {
  36         uint32_t result = tpm_startup(dev, TPM_ST_CLEAR);
  37
  38         return result == TPM_INVALID_POSTINIT ? TPM_SUCCESS : result;
  39 }
  40
  41 static int test_timer(struct udevice *dev)
  42 {
  43         printf("get_timer(0) = %lu\n", get_timer(0));
  44         return 0;
  45 }
  46
  47 static uint32_t tpm_get_flags(struct udevice *dev, uint8_t *disable,
  48                               uint8_t *deactivated, uint8_t *nvlocked)
  49 {
  50         struct tpm_permanent_flags pflags;
  51         uint32_t result;
  52
  53         result = tpm1_get_permanent_flags(dev, &pflags);
  54         if (result)
  55                 return result;
  56         if (disable)
  57                 *disable = pflags.disable;
  58         if (deactivated)
  59                 *deactivated = pflags.deactivated;
  60         if (nvlocked)
  61                 *nvlocked = pflags.nv_locked;
  62         debug("TPM: Got flags disable=%d, deactivated=%d, nvlocked=%d\n",
  63               pflags.disable, pflags.deactivated, pflags.nv_locked);
  64
  65         return 0;
  66 }
  67
  68 static uint32_t tpm_nv_write_value_lock(struct udevice *dev, uint32_t index)
  69 {
  70         debug("TPM: Write lock 0x%x\n", index);
  71
  72         return tpm_nv_write_value(dev, index, NULL, 0);
  73 }
  74
  75 static int tpm_is_owned(struct udevice *dev)
  76 {
  77         uint8_t response[TPM_PUBEK_SIZE];
  78         uint32_t result;
  79
  80         result = tpm_read_pubek(dev, response, sizeof(response));
  81
  82         return result != TPM_SUCCESS;
  83 }
  84
  85 static int test_early_extend(struct udevice *dev)
  86 {
  87         uint8_t value_in[20];
  88         uint8_t value_out[20];
  89
  90         printf("Testing earlyextend ...");
  91         tpm_init(dev);
  92         TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
  93         TPM_CHECK(tpm_continue_self_test(dev));
  94         TPM_CHECK(tpm_pcr_extend(dev, 1, value_in, sizeof(value_in), value_out,
  95                                  "test"));
  96         printf("done\n");
  97         return 0;
  98 }
  99
 100 static int test_early_nvram(struct udevice *dev)
 101 {
 102         uint32_t x;
 103
 104         printf("Testing earlynvram ...");
 105         tpm_init(dev);
 106         TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
 107         TPM_CHECK(tpm_continue_self_test(dev));
 108         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 109         TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
 110         printf("done\n");
 111         return 0;
 112 }
 113
 114 static int test_early_nvram2(struct udevice *dev)
 115 {
 116         uint32_t x;
 117
 118         printf("Testing earlynvram2 ...");
 119         tpm_init(dev);
 120         TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
 121         TPM_CHECK(tpm_continue_self_test(dev));
 122         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 123         TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
 124         printf("done\n");
 125         return 0;
 126 }
 127
 128 static int test_enable(struct udevice *dev)
 129 {
 130         uint8_t disable = 0, deactivated = 0;
 131
 132         printf("Testing enable ...\n");
 133         tpm_init(dev);
 134         TPM_CHECK(TlclStartupIfNeeded(dev));
 135         TPM_CHECK(tpm_self_test_full(dev));
 136         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 137         TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
 138         printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
 139         TPM_CHECK(tpm_physical_enable(dev));
 140         TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
 141         TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
 142         printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
 143         if (disable == 1 || deactivated == 1)
 144                 printf("\tfailed to enable or activate\n");
 145         printf("\tdone\n");
 146         return 0;
 147 }
 148
 149 #define reboot() do { \
 150         printf("\trebooting...\n"); \
 151         reset_cpu(); \
 152 } while (0)
 153
 154 static int test_fast_enable(struct udevice *dev)
 155 {
 156         uint8_t disable = 0, deactivated = 0;
 157         int i;
 158
 159         printf("Testing fastenable ...\n");
 160         tpm_init(dev);
 161         TPM_CHECK(TlclStartupIfNeeded(dev));
 162         TPM_CHECK(tpm_self_test_full(dev));
 163         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 164         TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
 165         printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
 166         for (i = 0; i < 2; i++) {
 167                 TPM_CHECK(tpm_force_clear(dev));
 168                 TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
 169                 printf("\tdisable is %d, deactivated is %d\n", disable,
 170                        deactivated);
 171                 assert(disable == 1 && deactivated == 1);
 172                 TPM_CHECK(tpm_physical_enable(dev));
 173                 TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
 174                 TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
 175                 printf("\tdisable is %d, deactivated is %d\n", disable,
 176                        deactivated);
 177                 assert(disable == 0 && deactivated == 0);
 178         }
 179         printf("\tdone\n");
 180         return 0;
 181 }
 182
 183 static int test_global_lock(struct udevice *dev)
 184 {
 185         uint32_t zero = 0;
 186         uint32_t result;
 187         uint32_t x;
 188
 189         printf("Testing globallock ...\n");
 190         tpm_init(dev);
 191         TPM_CHECK(TlclStartupIfNeeded(dev));
 192         TPM_CHECK(tpm_self_test_full(dev));
 193         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 194         TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
 195         TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero,
 196                                      sizeof(uint32_t)));
 197         TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
 198         TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero,
 199                                      sizeof(uint32_t)));
 200         TPM_CHECK(tpm_set_global_lock(dev));
 201         /* Verifies that write to index0 fails */
 202         x = 1;
 203         result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x));
 204         assert(result == TPM_AREA_LOCKED);
 205         TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
 206         assert(x == 0);
 207         /* Verifies that write to index1 is still possible */
 208         x = 2;
 209         TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
 210         TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
 211         assert(x == 2);
 212         /* Turns off PP */
 213         tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
 214         /* Verifies that write to index1 fails */
 215         x = 3;
 216         result = tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x));
 217         assert(result == TPM_BAD_PRESENCE);
 218         TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
 219         assert(x == 2);
 220         printf("\tdone\n");
 221         return 0;
 222 }
 223
 224 static int test_lock(struct udevice *dev)
 225 {
 226         printf("Testing lock ...\n");
 227         tpm_init(dev);
 228         tpm_startup(dev, TPM_ST_CLEAR);
 229         tpm_self_test_full(dev);
 230         tpm_tsc_physical_presence(dev, PRESENCE);
 231         tpm_nv_write_value_lock(dev, INDEX0);
 232         printf("\tLocked 0x%x\n", INDEX0);
 233         printf("\tdone\n");
 234         return 0;
 235 }
 236
 237 static void initialise_spaces(struct udevice *dev)
 238 {
 239         uint32_t zero = 0;
 240         uint32_t perm = TPM_NV_PER_WRITE_STCLEAR | TPM_NV_PER_PPWRITE;
 241
 242         printf("\tInitialising spaces\n");
 243         tpm1_nv_set_locked(dev);  /* useful only the first time */
 244         tpm1_nv_define_space(dev, INDEX0, perm, 4);
 245         tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero, 4);
 246         tpm1_nv_define_space(dev, INDEX1, perm, 4);
 247         tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero, 4);
 248         tpm1_nv_define_space(dev, INDEX2, perm, 4);
 249         tpm_nv_write_value(dev, INDEX2, (uint8_t *)&zero, 4);
 250         tpm1_nv_define_space(dev, INDEX3, perm, 4);
 251         tpm_nv_write_value(dev, INDEX3, (uint8_t *)&zero, 4);
 252         perm = TPM_NV_PER_READ_STCLEAR | TPM_NV_PER_WRITE_STCLEAR |
 253                 TPM_NV_PER_PPWRITE;
 254         tpm1_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
 255 }
 256
 257 static int test_readonly(struct udevice *dev)
 258 {
 259         uint8_t c;
 260         uint32_t index_0, index_1, index_2, index_3;
 261         int read0, read1, read2, read3;
 262
 263         printf("Testing readonly ...\n");
 264         tpm_init(dev);
 265         tpm_startup(dev, TPM_ST_CLEAR);
 266         tpm_self_test_full(dev);
 267         tpm_tsc_physical_presence(dev, PRESENCE);
 268         /*
 269          * Checks if initialisation has completed by trying to read-lock a
 270          * space that's created at the end of initialisation
 271          */
 272         if (tpm_nv_read_value(dev, INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
 273                 /* The initialisation did not complete */
 274                 initialise_spaces(dev);
 275         }
 276
 277         /* Checks if spaces are OK or messed up */
 278         read0 = tpm_nv_read_value(dev, INDEX0, (uint8_t *)&index_0,
 279                                   sizeof(index_0));
 280         read1 = tpm_nv_read_value(dev, INDEX1, (uint8_t *)&index_1,
 281                                   sizeof(index_1));
 282         read2 = tpm_nv_read_value(dev, INDEX2, (uint8_t *)&index_2,
 283                                   sizeof(index_2));
 284         read3 = tpm_nv_read_value(dev, INDEX3, (uint8_t *)&index_3,
 285                                   sizeof(index_3));
 286         if (read0 || read1 || read2 || read3) {
 287                 printf("Invalid contents\n");
 288                 return 0;
 289         }
 290
 291         /*
 292          * Writes space, and locks it.  Then attempts to write again.
 293          * I really wish I could use the imperative.
 294          */
 295         index_0 += 1;
 296         if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
 297                                sizeof(index_0) !=
 298                 TPM_SUCCESS)) {
 299                 pr_err("\tcould not write index 0\n");
 300         }
 301         tpm_nv_write_value_lock(dev, INDEX0);
 302         if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
 303                                sizeof(index_0)) ==
 304                         TPM_SUCCESS)
 305                 pr_err("\tindex 0 is not locked\n");
 306
 307         printf("\tdone\n");
 308         return 0;
 309 }
 310
 311 static int test_redefine_unowned(struct udevice *dev)
 312 {
 313         uint32_t perm;
 314         uint32_t result;
 315         uint32_t x;
 316
 317         printf("Testing redefine_unowned ...");
 318         tpm_init(dev);
 319         TPM_CHECK(TlclStartupIfNeeded(dev));
 320         TPM_CHECK(tpm_self_test_full(dev));
 321         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 322         assert(!tpm_is_owned(dev));
 323
 324         /* Ensures spaces exist. */
 325         TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
 326         TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
 327
 328         /* Redefines spaces a couple of times. */
 329         perm = TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK;
 330         TPM_CHECK(tpm1_nv_define_space(dev, INDEX0, perm,
 331                                        2 * sizeof(uint32_t)));
 332         TPM_CHECK(tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
 333         perm = TPM_NV_PER_PPWRITE;
 334         TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm,
 335                                        2 * sizeof(uint32_t)));
 336         TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
 337
 338         /* Sets the global lock */
 339         tpm_set_global_lock(dev);
 340
 341         /* Verifies that index0 cannot be redefined */
 342         result = tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
 343         assert(result == TPM_AREA_LOCKED);
 344
 345         /* Checks that index1 can */
 346         TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm,
 347                                        2 * sizeof(uint32_t)));
 348         TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
 349
 350         /* Turns off PP */
 351         tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
 352
 353         /* Verifies that neither index0 nor index1 can be redefined */
 354         result = tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
 355         assert(result == TPM_BAD_PRESENCE);
 356         result = tpm1_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
 357         assert(result == TPM_BAD_PRESENCE);
 358
 359         printf("done\n");
 360         return 0;
 361 }
 362
 363 #define PERMPPGL (TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK)
 364 #define PERMPP TPM_NV_PER_PPWRITE
 365
 366 static int test_space_perm(struct udevice *dev)
 367 {
 368         uint32_t perm;
 369
 370         printf("Testing spaceperm ...");
 371         tpm_init(dev);
 372         TPM_CHECK(TlclStartupIfNeeded(dev));
 373         TPM_CHECK(tpm_continue_self_test(dev));
 374         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 375         TPM_CHECK(tpm_get_permissions(dev, INDEX0, &perm));
 376         assert((perm & PERMPPGL) == PERMPPGL);
 377         TPM_CHECK(tpm_get_permissions(dev, INDEX1, &perm));
 378         assert((perm & PERMPP) == PERMPP);
 379         printf("done\n");
 380         return 0;
 381 }
 382
 383 static int test_startup(struct udevice *dev)
 384 {
 385         uint32_t result;
 386
 387         printf("Testing startup ...\n");
 388
 389         tpm_init(dev);
 390         result = tpm_startup(dev, TPM_ST_CLEAR);
 391         if (result != 0 && result != TPM_INVALID_POSTINIT)
 392                 printf("\ttpm startup failed with 0x%x\n", result);
 393         result = tpm_get_flags(dev, NULL, NULL, NULL);
 394         if (result != 0)
 395                 printf("\ttpm getflags failed with 0x%x\n", result);
 396         printf("\texecuting SelfTestFull\n");
 397         tpm_self_test_full(dev);
 398         result = tpm_get_flags(dev, NULL, NULL, NULL);
 399         if (result != 0)
 400                 printf("\ttpm getflags failed with 0x%x\n", result);
 401         printf("\tdone\n");
 402         return 0;
 403 }
 404
 405 /*
 406  * Runs [op] and ensures it returns success and doesn't run longer than
 407  * [time_limit] in milliseconds.
 408  */
 409 #define TTPM_CHECK(op, time_limit) do { \
 410         ulong start, time; \
 411         uint32_t __result; \
 412         \
 413         start = get_timer(0); \
 414         __result = op; \
 415         if (__result != TPM_SUCCESS) { \
 416                 printf("\t" #op ": error 0x%x\n", __result); \
 417                 return -1; \
 418         } \
 419         time = get_timer(start); \
 420         printf("\t" #op ": %lu ms\n", time); \
 421         if (time > (ulong)time_limit) { \
 422                 printf("\t" #op " exceeded " #time_limit " ms\n"); \
 423         } \
 424 } while (0)
 425
 426
 427 static int test_timing(struct udevice *dev)
 428 {
 429         uint8_t in[20], out[20];
 430         uint32_t x;
 431
 432         printf("Testing timing ...");
 433         tpm_init(dev);
 434         TTPM_CHECK(TlclStartupIfNeeded(dev), 50);
 435         TTPM_CHECK(tpm_continue_self_test(dev), 100);
 436         TTPM_CHECK(tpm_self_test_full(dev), 1000);
 437         TTPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE), 100);
 438         TTPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
 439                    100);
 440         TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
 441                    100);
 442         TTPM_CHECK(tpm_pcr_extend(dev, 0, in, sizeof(in), out, "test"), 200);
 443         TTPM_CHECK(tpm_set_global_lock(dev), 50);
 444         TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
 445         printf("done\n");
 446         return 0;
 447 }
 448
 449 #define TPM_MAX_NV_WRITES_NOOWNER 64
 450
 451 static int test_write_limit(struct udevice *dev)
 452 {
 453         uint32_t result;
 454         int i;
 455
 456         printf("Testing writelimit ...\n");
 457         tpm_init(dev);
 458         TPM_CHECK(TlclStartupIfNeeded(dev));
 459         TPM_CHECK(tpm_self_test_full(dev));
 460         TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
 461         TPM_CHECK(tpm_force_clear(dev));
 462         TPM_CHECK(tpm_physical_enable(dev));
 463         TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
 464
 465         for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
 466                 printf("\twriting %d\n", i);
 467                 result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i,
 468                                             sizeof(i));
 469                 switch (result) {
 470                 case TPM_SUCCESS:
 471                         break;
 472                 case TPM_MAXNVWRITES:
 473                         assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
 474                 default:
 475                         pr_err("\tunexpected error code %d (0x%x)\n",
 476                               result, result);
 477                 }
 478         }
 479
 480         /* Reset write count */
 481         TPM_CHECK(tpm_force_clear(dev));
 482         TPM_CHECK(tpm_physical_enable(dev));
 483         TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
 484
 485         /* Try writing again. */
 486         TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i, sizeof(i)));
 487         printf("\tdone\n");
 488         return 0;
 489 }
 490
 491 #define VOIDTEST(XFUNC) \
 492         int do_test_##XFUNC(struct cmd_tbl *cmd_tbl, int flag, int argc, \
 493         char *const argv[]) \
 494         { \
 495                 struct udevice *dev; \
 496                 int ret; \
 497 \
 498                 ret = get_tpm(&dev); \
 499                 if (ret) \
 500                         return ret; \
 501                 return test_##XFUNC(dev); \
 502         }
 503
 504 #define VOIDENT(XNAME) \
 505         U_BOOT_CMD_MKENT(XNAME, 0, 1, do_test_##XNAME, "", ""),
 506
 507 VOIDTEST(early_extend)
 508 VOIDTEST(early_nvram)
 509 VOIDTEST(early_nvram2)
 510 VOIDTEST(enable)
 511 VOIDTEST(fast_enable)
 512 VOIDTEST(global_lock)
 513 VOIDTEST(lock)
 514 VOIDTEST(readonly)
 515 VOIDTEST(redefine_unowned)
 516 VOIDTEST(space_perm)
 517 VOIDTEST(startup)
 518 VOIDTEST(timing)
 519 VOIDTEST(write_limit)
 520 VOIDTEST(timer)
 521
 522 static struct cmd_tbl cmd_cros_tpm_sub[] = {
 523         VOIDENT(early_extend)
 524         VOIDENT(early_nvram)
 525         VOIDENT(early_nvram2)
 526         VOIDENT(enable)
 527         VOIDENT(fast_enable)
 528         VOIDENT(global_lock)
 529         VOIDENT(lock)
 530         VOIDENT(readonly)
 531         VOIDENT(redefine_unowned)
 532         VOIDENT(space_perm)
 533         VOIDENT(startup)
 534         VOIDENT(timing)
 535         VOIDENT(write_limit)
 536         VOIDENT(timer)
 537 };
 538
 539 static int do_tpmtest(struct cmd_tbl *cmdtp, int flag, int argc,
 540                       char *const argv[])
 541 {
 542         struct cmd_tbl *c;
 543         int i;
 544
 545         printf("argc = %d, argv = ", argc);
 546
 547         for (i = 0; i < argc; i++)
 548                 printf(" %s", argv[i]);
 549
 550         printf("\n------\n");
 551
 552         argc--;
 553         argv++;
 554         c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,
 555                          ARRAY_SIZE(cmd_cros_tpm_sub));
 556         return c ? c->cmd(cmdtp, flag, argc, argv) : cmd_usage(cmdtp);
 557 }
 558
 559 U_BOOT_CMD(tpmtest, 2, 1, do_tpmtest, "TPM tests",
 560         "\n\tearly_extend\n"
 561         "\tearly_nvram\n"
 562         "\tearly_nvram2\n"
 563         "\tenable\n"
 564         "\tfast_enable\n"
 565         "\tglobal_lock\n"
 566         "\tlock\n"
 567         "\treadonly\n"
 568         "\tredefine_unowned\n"
 569         "\tspace_perm\n"
 570         "\tstartup\n"
 571         "\ttiming\n"
 572         "\twrite_limit\n");