blob: 330640594879d138a2d4b279f77d07c016d03b00 [file] [log] [blame]
Simon Glasse76cb922015-08-22 18:31:42 -06001/*
2 * Copyright (c) 2015 Google, Inc
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
8#include <command.h>
9#include <environment.h>
10#include <tpm.h>
11
12/* Prints error and returns on failure */
13#define TPM_CHECK(tpm_command) do { \
14 uint32_t result; \
15 \
16 result = (tpm_command); \
17 if (result != TPM_SUCCESS) { \
18 printf("TEST FAILED: line %d: " #tpm_command ": 0x%x\n", \
19 __LINE__, result); \
20 return result; \
21 } \
22} while (0)
23
24#define INDEX0 0xda70
25#define INDEX1 0xda71
26#define INDEX2 0xda72
27#define INDEX3 0xda73
28#define INDEX_INITIALISED 0xda80
29#define PHYS_PRESENCE 4
30#define PRESENCE 8
31
32static uint32_t TlclStartupIfNeeded(void)
33{
34 uint32_t result = tpm_startup(TPM_ST_CLEAR);
35
36 return result == TPM_INVALID_POSTINIT ? TPM_SUCCESS : result;
37}
38
39static int test_timer(void)
40{
41 printf("get_timer(0) = %lu\n", get_timer(0));
42 return 0;
43}
44
45static uint32_t tpm_get_flags(uint8_t *disable, uint8_t *deactivated,
46 uint8_t *nvlocked)
47{
48 struct tpm_permanent_flags pflags;
49 uint32_t result;
50
51 result = tpm_get_permanent_flags(&pflags);
52 if (result)
53 return result;
54 if (disable)
55 *disable = pflags.disable;
56 if (deactivated)
57 *deactivated = pflags.deactivated;
58 if (nvlocked)
59 *nvlocked = pflags.nv_locked;
60 debug("TPM: Got flags disable=%d, deactivated=%d, nvlocked=%d\n",
61 pflags.disable, pflags.deactivated, pflags.nv_locked);
62
63 return 0;
64}
65
66static uint32_t tpm_set_global_lock(void)
67{
68 uint32_t x;
69
70 debug("TPM: Set global lock\n");
71 return tpm_nv_write_value(INDEX0, (uint8_t *)&x, 0);
72}
73
74static uint32_t tpm_nv_write_value_lock(uint32_t index)
75{
76 debug("TPM: Write lock 0x%x\n", index);
77
78 return tpm_nv_write_value(index, NULL, 0);
79}
80
81static uint32_t tpm_nv_set_locked(void)
82{
83 debug("TPM: Set NV locked\n");
84
85 return tpm_nv_define_space(TPM_NV_INDEX_LOCK, 0, 0);
86}
87
88static int tpm_is_owned(void)
89{
90 uint8_t response[TPM_PUBEK_SIZE];
91 uint32_t result;
92
93 result = tpm_read_pubek(response, sizeof(response));
94
95 return result != TPM_SUCCESS;
96}
97
98static int test_early_extend(void)
99{
100 uint8_t value_in[20];
101 uint8_t value_out[20];
102
103 printf("Testing earlyextend ...");
104 tpm_init();
105 TPM_CHECK(tpm_startup(TPM_ST_CLEAR));
106 TPM_CHECK(tpm_continue_self_test());
107 TPM_CHECK(tpm_extend(1, value_in, value_out));
108 printf("done\n");
109 return 0;
110}
111
112static int test_early_nvram(void)
113{
114 uint32_t x;
115
116 printf("Testing earlynvram ...");
117 tpm_init();
118 TPM_CHECK(tpm_startup(TPM_ST_CLEAR));
119 TPM_CHECK(tpm_continue_self_test());
120 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
121 TPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)));
122 printf("done\n");
123 return 0;
124}
125
126static int test_early_nvram2(void)
127{
128 uint32_t x;
129
130 printf("Testing earlynvram2 ...");
131 tpm_init();
132 TPM_CHECK(tpm_startup(TPM_ST_CLEAR));
133 TPM_CHECK(tpm_continue_self_test());
134 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
135 TPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&x, sizeof(x)));
136 printf("done\n");
137 return 0;
138}
139
140static int test_enable(void)
141{
142 uint8_t disable = 0, deactivated = 0;
143
144 printf("Testing enable ...\n");
145 tpm_init();
146 TPM_CHECK(TlclStartupIfNeeded());
147 TPM_CHECK(tpm_self_test_full());
148 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
149 TPM_CHECK(tpm_get_flags(&disable, &deactivated, NULL));
150 printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
151 TPM_CHECK(tpm_physical_enable());
152 TPM_CHECK(tpm_physical_set_deactivated(0));
153 TPM_CHECK(tpm_get_flags(&disable, &deactivated, NULL));
154 printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
155 if (disable == 1 || deactivated == 1)
156 printf("\tfailed to enable or activate\n");
157 printf("\tdone\n");
158 return 0;
159}
160
161#define reboot() do { \
162 printf("\trebooting...\n"); \
163 reset_cpu(0); \
164} while (0)
165
166static int test_fast_enable(void)
167{
168 uint8_t disable = 0, deactivated = 0;
169 int i;
170
171 printf("Testing fastenable ...\n");
172 tpm_init();
173 TPM_CHECK(TlclStartupIfNeeded());
174 TPM_CHECK(tpm_self_test_full());
175 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
176 TPM_CHECK(tpm_get_flags(&disable, &deactivated, NULL));
177 printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
178 for (i = 0; i < 2; i++) {
179 TPM_CHECK(tpm_force_clear());
180 TPM_CHECK(tpm_get_flags(&disable, &deactivated, NULL));
181 printf("\tdisable is %d, deactivated is %d\n", disable,
182 deactivated);
183 assert(disable == 1 && deactivated == 1);
184 TPM_CHECK(tpm_physical_enable());
185 TPM_CHECK(tpm_physical_set_deactivated(0));
186 TPM_CHECK(tpm_get_flags(&disable, &deactivated, NULL));
187 printf("\tdisable is %d, deactivated is %d\n", disable,
188 deactivated);
189 assert(disable == 0 && deactivated == 0);
190 }
191 printf("\tdone\n");
192 return 0;
193}
194
195static int test_global_lock(void)
196{
197 uint32_t zero = 0;
198 uint32_t result;
199 uint32_t x;
200
201 printf("Testing globallock ...\n");
202 tpm_init();
203 TPM_CHECK(TlclStartupIfNeeded());
204 TPM_CHECK(tpm_self_test_full());
205 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
206 TPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)));
207 TPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&zero,
208 sizeof(uint32_t)));
209 TPM_CHECK(tpm_nv_read_value(INDEX1, (uint8_t *)&x, sizeof(x)));
210 TPM_CHECK(tpm_nv_write_value(INDEX1, (uint8_t *)&zero,
211 sizeof(uint32_t)));
212 TPM_CHECK(tpm_set_global_lock());
213 /* Verifies that write to index0 fails */
214 x = 1;
215 result = tpm_nv_write_value(INDEX0, (uint8_t *)&x, sizeof(x));
216 assert(result == TPM_AREA_LOCKED);
217 TPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)));
218 assert(x == 0);
219 /* Verifies that write to index1 is still possible */
220 x = 2;
221 TPM_CHECK(tpm_nv_write_value(INDEX1, (uint8_t *)&x, sizeof(x)));
222 TPM_CHECK(tpm_nv_read_value(INDEX1, (uint8_t *)&x, sizeof(x)));
223 assert(x == 2);
224 /* Turns off PP */
225 tpm_tsc_physical_presence(PHYS_PRESENCE);
226 /* Verifies that write to index1 fails */
227 x = 3;
228 result = tpm_nv_write_value(INDEX1, (uint8_t *)&x, sizeof(x));
229 assert(result == TPM_BAD_PRESENCE);
230 TPM_CHECK(tpm_nv_read_value(INDEX1, (uint8_t *)&x, sizeof(x)));
231 assert(x == 2);
232 printf("\tdone\n");
233 return 0;
234}
235
236static int test_lock(void)
237{
238 printf("Testing lock ...\n");
239 tpm_init();
240 tpm_startup(TPM_ST_CLEAR);
241 tpm_self_test_full();
242 tpm_tsc_physical_presence(PRESENCE);
243 tpm_nv_write_value_lock(INDEX0);
244 printf("\tLocked 0x%x\n", INDEX0);
245 printf("\tdone\n");
246 return 0;
247}
248
249static void initialise_spaces(void)
250{
251 uint32_t zero = 0;
252 uint32_t perm = TPM_NV_PER_WRITE_STCLEAR | TPM_NV_PER_PPWRITE;
253
254 printf("\tInitialising spaces\n");
255 tpm_nv_set_locked(); /* useful only the first time */
256 tpm_nv_define_space(INDEX0, perm, 4);
257 tpm_nv_write_value(INDEX0, (uint8_t *)&zero, 4);
258 tpm_nv_define_space(INDEX1, perm, 4);
259 tpm_nv_write_value(INDEX1, (uint8_t *)&zero, 4);
260 tpm_nv_define_space(INDEX2, perm, 4);
261 tpm_nv_write_value(INDEX2, (uint8_t *)&zero, 4);
262 tpm_nv_define_space(INDEX3, perm, 4);
263 tpm_nv_write_value(INDEX3, (uint8_t *)&zero, 4);
264 perm = TPM_NV_PER_READ_STCLEAR | TPM_NV_PER_WRITE_STCLEAR |
265 TPM_NV_PER_PPWRITE;
266 tpm_nv_define_space(INDEX_INITIALISED, perm, 1);
267}
268
269static int test_readonly(void)
270{
271 uint8_t c;
272 uint32_t index_0, index_1, index_2, index_3;
273 int read0, read1, read2, read3;
274
275 printf("Testing readonly ...\n");
276 tpm_init();
277 tpm_startup(TPM_ST_CLEAR);
278 tpm_self_test_full();
279 tpm_tsc_physical_presence(PRESENCE);
280 /*
281 * Checks if initialisation has completed by trying to read-lock a
282 * space that's created at the end of initialisation
283 */
284 if (tpm_nv_read_value(INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
285 /* The initialisation did not complete */
286 initialise_spaces();
287 }
288
289 /* Checks if spaces are OK or messed up */
290 read0 = tpm_nv_read_value(INDEX0, (uint8_t *)&index_0, sizeof(index_0));
291 read1 = tpm_nv_read_value(INDEX1, (uint8_t *)&index_1, sizeof(index_1));
292 read2 = tpm_nv_read_value(INDEX2, (uint8_t *)&index_2, sizeof(index_2));
293 read3 = tpm_nv_read_value(INDEX3, (uint8_t *)&index_3, sizeof(index_3));
294 if (read0 || read1 || read2 || read3) {
295 printf("Invalid contents\n");
296 return 0;
297 }
298
299 /*
300 * Writes space, and locks it. Then attempts to write again.
301 * I really wish I could use the imperative.
302 */
303 index_0 += 1;
304 if (tpm_nv_write_value(INDEX0, (uint8_t *)&index_0, sizeof(index_0) !=
305 TPM_SUCCESS)) {
306 error("\tcould not write index 0\n");
307 }
308 tpm_nv_write_value_lock(INDEX0);
309 if (tpm_nv_write_value(INDEX0, (uint8_t *)&index_0, sizeof(index_0)) ==
310 TPM_SUCCESS)
311 error("\tindex 0 is not locked\n");
312
313 printf("\tdone\n");
314 return 0;
315}
316
317static int test_redefine_unowned(void)
318{
319 uint32_t perm;
320 uint32_t result;
321 uint32_t x;
322
323 printf("Testing redefine_unowned ...");
324 tpm_init();
325 TPM_CHECK(TlclStartupIfNeeded());
326 TPM_CHECK(tpm_self_test_full());
327 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
328 assert(!tpm_is_owned());
329
330 /* Ensures spaces exist. */
331 TPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)));
332 TPM_CHECK(tpm_nv_read_value(INDEX1, (uint8_t *)&x, sizeof(x)));
333
334 /* Redefines spaces a couple of times. */
335 perm = TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK;
336 TPM_CHECK(tpm_nv_define_space(INDEX0, perm, 2 * sizeof(uint32_t)));
337 TPM_CHECK(tpm_nv_define_space(INDEX0, perm, sizeof(uint32_t)));
338 perm = TPM_NV_PER_PPWRITE;
339 TPM_CHECK(tpm_nv_define_space(INDEX1, perm, 2 * sizeof(uint32_t)));
340 TPM_CHECK(tpm_nv_define_space(INDEX1, perm, sizeof(uint32_t)));
341
342 /* Sets the global lock */
343 tpm_set_global_lock();
344
345 /* Verifies that index0 cannot be redefined */
346 result = tpm_nv_define_space(INDEX0, perm, sizeof(uint32_t));
347 assert(result == TPM_AREA_LOCKED);
348
349 /* Checks that index1 can */
350 TPM_CHECK(tpm_nv_define_space(INDEX1, perm, 2 * sizeof(uint32_t)));
351 TPM_CHECK(tpm_nv_define_space(INDEX1, perm, sizeof(uint32_t)));
352
353 /* Turns off PP */
354 tpm_tsc_physical_presence(PHYS_PRESENCE);
355
356 /* Verifies that neither index0 nor index1 can be redefined */
357 result = tpm_nv_define_space(INDEX0, perm, sizeof(uint32_t));
358 assert(result == TPM_BAD_PRESENCE);
359 result = tpm_nv_define_space(INDEX1, perm, sizeof(uint32_t));
360 assert(result == TPM_BAD_PRESENCE);
361
362 printf("done\n");
363 return 0;
364}
365
366#define PERMPPGL (TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK)
367#define PERMPP TPM_NV_PER_PPWRITE
368
369static int test_space_perm(void)
370{
371 uint32_t perm;
372
373 printf("Testing spaceperm ...");
374 tpm_init();
375 TPM_CHECK(TlclStartupIfNeeded());
376 TPM_CHECK(tpm_continue_self_test());
377 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
378 TPM_CHECK(tpm_get_permissions(INDEX0, &perm));
379 assert((perm & PERMPPGL) == PERMPPGL);
380 TPM_CHECK(tpm_get_permissions(INDEX1, &perm));
381 assert((perm & PERMPP) == PERMPP);
382 printf("done\n");
383 return 0;
384}
385
386static int test_startup(void)
387{
388 uint32_t result;
389 printf("Testing startup ...\n");
390
391 tpm_init();
392 result = tpm_startup(TPM_ST_CLEAR);
393 if (result != 0 && result != TPM_INVALID_POSTINIT)
394 printf("\ttpm startup failed with 0x%x\n", result);
395 result = tpm_get_flags(NULL, NULL, NULL);
396 if (result != 0)
397 printf("\ttpm getflags failed with 0x%x\n", result);
398 printf("\texecuting SelfTestFull\n");
399 tpm_self_test_full();
400 result = tpm_get_flags(NULL, NULL, NULL);
401 if (result != 0)
402 printf("\ttpm getflags failed with 0x%x\n", result);
403 printf("\tdone\n");
404 return 0;
405}
406
407/*
408 * Runs [op] and ensures it returns success and doesn't run longer than
409 * [time_limit] in milliseconds.
410 */
411#define TTPM_CHECK(op, time_limit) do { \
412 ulong start, time; \
413 uint32_t __result; \
414 \
415 start = get_timer(0); \
416 __result = op; \
417 if (__result != TPM_SUCCESS) { \
418 printf("\t" #op ": error 0x%x\n", __result); \
419 return -1; \
420 } \
421 time = get_timer(start); \
422 printf("\t" #op ": %lu ms\n", time); \
423 if (time > (ulong)time_limit) { \
424 printf("\t" #op " exceeded " #time_limit " ms\n"); \
425 } \
426} while (0)
427
428
429static int test_timing(void)
430{
431 uint32_t x;
432 uint8_t in[20], out[20];
433
434 printf("Testing timing ...");
435 tpm_init();
436 TTPM_CHECK(TlclStartupIfNeeded(), 50);
437 TTPM_CHECK(tpm_continue_self_test(), 100);
438 TTPM_CHECK(tpm_self_test_full(), 1000);
439 TTPM_CHECK(tpm_tsc_physical_presence(PRESENCE), 100);
440 TTPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&x, sizeof(x)), 100);
441 TTPM_CHECK(tpm_nv_read_value(INDEX0, (uint8_t *)&x, sizeof(x)), 100);
442 TTPM_CHECK(tpm_extend(0, in, out), 200);
443 TTPM_CHECK(tpm_set_global_lock(), 50);
444 TTPM_CHECK(tpm_tsc_physical_presence(PHYS_PRESENCE), 100);
445 printf("done\n");
446 return 0;
447}
448
449#define TPM_MAX_NV_WRITES_NOOWNER 64
450
451static int test_write_limit(void)
452{
453 printf("Testing writelimit ...\n");
454 int i;
455 uint32_t result;
456
457 tpm_init();
458 TPM_CHECK(TlclStartupIfNeeded());
459 TPM_CHECK(tpm_self_test_full());
460 TPM_CHECK(tpm_tsc_physical_presence(PRESENCE));
461 TPM_CHECK(tpm_force_clear());
462 TPM_CHECK(tpm_physical_enable());
463 TPM_CHECK(tpm_physical_set_deactivated(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(INDEX0, (uint8_t *)&i, sizeof(i));
468 switch (result) {
469 case TPM_SUCCESS:
470 break;
471 case TPM_MAXNVWRITES:
472 assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
473 default:
474 error("\tunexpected error code %d (0x%x)\n",
475 result, result);
476 }
477 }
478
479 /* Reset write count */
480 TPM_CHECK(tpm_force_clear());
481 TPM_CHECK(tpm_physical_enable());
482 TPM_CHECK(tpm_physical_set_deactivated(0));
483
484 /* Try writing again. */
485 TPM_CHECK(tpm_nv_write_value(INDEX0, (uint8_t *)&i, sizeof(i)));
486 printf("\tdone\n");
487 return 0;
488}
489
490#define VOIDTEST(XFUNC) \
491 int do_test_##XFUNC(cmd_tbl_t *cmd_tbl, int flag, int argc, \
492 char * const argv[]) \
493 { \
494 return test_##XFUNC(); \
495 }
496
497#define VOIDENT(XNAME) \
498 U_BOOT_CMD_MKENT(XNAME, 0, 1, do_test_##XNAME, "", ""),
499
500VOIDTEST(early_extend)
501VOIDTEST(early_nvram)
502VOIDTEST(early_nvram2)
503VOIDTEST(enable)
504VOIDTEST(fast_enable)
505VOIDTEST(global_lock)
506VOIDTEST(lock)
507VOIDTEST(readonly)
508VOIDTEST(redefine_unowned)
509VOIDTEST(space_perm)
510VOIDTEST(startup)
511VOIDTEST(timing)
512VOIDTEST(write_limit)
513VOIDTEST(timer)
514
515static cmd_tbl_t cmd_cros_tpm_sub[] = {
516 VOIDENT(early_extend)
517 VOIDENT(early_nvram)
518 VOIDENT(early_nvram2)
519 VOIDENT(enable)
520 VOIDENT(fast_enable)
521 VOIDENT(global_lock)
522 VOIDENT(lock)
523 VOIDENT(readonly)
524 VOIDENT(redefine_unowned)
525 VOIDENT(space_perm)
526 VOIDENT(startup)
527 VOIDENT(timing)
528 VOIDENT(write_limit)
529 VOIDENT(timer)
530};
531
532static int do_tpmtest(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
533{
534 cmd_tbl_t *c;
Stefan Brüns0427b9c2016-10-16 17:13:55 +0200535 int i;
Simon Glasse76cb922015-08-22 18:31:42 -0600536
537 printf("argc = %d, argv = ", argc);
Simon Glasse76cb922015-08-22 18:31:42 -0600538
Stefan Brüns0427b9c2016-10-16 17:13:55 +0200539 for (i = 0; i < argc; i++)
540 printf(" %s", argv[i]);
541
542 printf("\n------\n");
543
Simon Glasse76cb922015-08-22 18:31:42 -0600544 argc--;
545 argv++;
546 c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,
547 ARRAY_SIZE(cmd_cros_tpm_sub));
548 return c ? c->cmd(cmdtp, flag, argc, argv) : cmd_usage(cmdtp);
549}
550
551U_BOOT_CMD(tpmtest, 2, 1, do_tpmtest, "TPM tests",
552 "\n\tearly_extend\n"
553 "\tearly_nvram\n"
554 "\tearly_nvram2\n"
555 "\tenable\n"
556 "\tfast_enable\n"
557 "\tglobal_lock\n"
558 "\tlock\n"
559 "\treadonly\n"
560 "\tredefine_unowned\n"
561 "\tspace_perm\n"
562 "\tstartup\n"
563 "\ttiming\n"
564 "\twrite_limit\n");