xref: /openbmc/u-boot/cmd/tpm-v1.c (revision 67c145a8)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) 2013 The Chromium OS Authors.
4  */
5 
6 #include <common.h>
7 #include <malloc.h>
8 #include <asm/unaligned.h>
9 #include <tpm-common.h>
10 #include <tpm-v1.h>
11 #include "tpm-user-utils.h"
12 
13 static int do_tpm_startup(cmd_tbl_t *cmdtp, int flag, int argc,
14 			  char * const argv[])
15 {
16 	enum tpm_startup_type mode;
17 	struct udevice *dev;
18 	int rc;
19 
20 	rc = get_tpm(&dev);
21 	if (rc)
22 		return rc;
23 	if (argc != 2)
24 		return CMD_RET_USAGE;
25 	if (!strcasecmp("TPM_ST_CLEAR", argv[1])) {
26 		mode = TPM_ST_CLEAR;
27 	} else if (!strcasecmp("TPM_ST_STATE", argv[1])) {
28 		mode = TPM_ST_STATE;
29 	} else if (!strcasecmp("TPM_ST_DEACTIVATED", argv[1])) {
30 		mode = TPM_ST_DEACTIVATED;
31 	} else {
32 		printf("Couldn't recognize mode string: %s\n", argv[1]);
33 		return CMD_RET_FAILURE;
34 	}
35 
36 	return report_return_code(tpm_startup(dev, mode));
37 }
38 
39 static int do_tpm_nv_define_space(cmd_tbl_t *cmdtp, int flag, int argc,
40 				  char * const argv[])
41 {
42 	u32 index, perm, size;
43 	struct udevice *dev;
44 	int rc;
45 
46 	rc = get_tpm(&dev);
47 	if (rc)
48 		return rc;
49 
50 	if (argc != 4)
51 		return CMD_RET_USAGE;
52 	index = simple_strtoul(argv[1], NULL, 0);
53 	perm = simple_strtoul(argv[2], NULL, 0);
54 	size = simple_strtoul(argv[3], NULL, 0);
55 
56 	return report_return_code(tpm_nv_define_space(dev, index, perm, size));
57 }
58 
59 static int do_tpm_nv_read_value(cmd_tbl_t *cmdtp, int flag, int argc,
60 				char * const argv[])
61 {
62 	u32 index, count, rc;
63 	struct udevice *dev;
64 	void *data;
65 
66 	rc = get_tpm(&dev);
67 	if (rc)
68 		return rc;
69 
70 	if (argc != 4)
71 		return CMD_RET_USAGE;
72 	index = simple_strtoul(argv[1], NULL, 0);
73 	data = (void *)simple_strtoul(argv[2], NULL, 0);
74 	count = simple_strtoul(argv[3], NULL, 0);
75 
76 	rc = tpm_nv_read_value(dev, index, data, count);
77 	if (!rc) {
78 		puts("area content:\n");
79 		print_byte_string(data, count);
80 	}
81 
82 	return report_return_code(rc);
83 }
84 
85 static int do_tpm_nv_write_value(cmd_tbl_t *cmdtp, int flag, int argc,
86 				 char * const argv[])
87 {
88 	struct udevice *dev;
89 	u32 index, rc;
90 	size_t count;
91 	void *data;
92 
93 	rc = get_tpm(&dev);
94 	if (rc)
95 		return rc;
96 
97 	if (argc != 3)
98 		return CMD_RET_USAGE;
99 	index = simple_strtoul(argv[1], NULL, 0);
100 	data = parse_byte_string(argv[2], NULL, &count);
101 	if (!data) {
102 		printf("Couldn't parse byte string %s\n", argv[2]);
103 		return CMD_RET_FAILURE;
104 	}
105 
106 	rc = tpm_nv_write_value(dev, index, data, count);
107 	free(data);
108 
109 	return report_return_code(rc);
110 }
111 
112 static int do_tpm_extend(cmd_tbl_t *cmdtp, int flag, int argc,
113 			 char * const argv[])
114 {
115 	u8 in_digest[20], out_digest[20];
116 	struct udevice *dev;
117 	u32 index, rc;
118 
119 	rc = get_tpm(&dev);
120 	if (rc)
121 		return rc;
122 
123 	if (argc != 3)
124 		return CMD_RET_USAGE;
125 	index = simple_strtoul(argv[1], NULL, 0);
126 	if (!parse_byte_string(argv[2], in_digest, NULL)) {
127 		printf("Couldn't parse byte string %s\n", argv[2]);
128 		return CMD_RET_FAILURE;
129 	}
130 
131 	rc = tpm_extend(dev, index, in_digest, out_digest);
132 	if (!rc) {
133 		puts("PCR value after execution of the command:\n");
134 		print_byte_string(out_digest, sizeof(out_digest));
135 	}
136 
137 	return report_return_code(rc);
138 }
139 
140 static int do_tpm_pcr_read(cmd_tbl_t *cmdtp, int flag, int argc,
141 			   char * const argv[])
142 {
143 	u32 index, count, rc;
144 	struct udevice *dev;
145 	void *data;
146 
147 	rc = get_tpm(&dev);
148 	if (rc)
149 		return rc;
150 
151 	if (argc != 4)
152 		return CMD_RET_USAGE;
153 	index = simple_strtoul(argv[1], NULL, 0);
154 	data = (void *)simple_strtoul(argv[2], NULL, 0);
155 	count = simple_strtoul(argv[3], NULL, 0);
156 
157 	rc = tpm_pcr_read(dev, index, data, count);
158 	if (!rc) {
159 		puts("Named PCR content:\n");
160 		print_byte_string(data, count);
161 	}
162 
163 	return report_return_code(rc);
164 }
165 
166 static int do_tpm_tsc_physical_presence(cmd_tbl_t *cmdtp, int flag, int argc,
167 					char * const argv[])
168 {
169 	struct udevice *dev;
170 	u16 presence;
171 	int rc;
172 
173 	rc = get_tpm(&dev);
174 	if (rc)
175 		return rc;
176 
177 	if (argc != 2)
178 		return CMD_RET_USAGE;
179 	presence = (u16)simple_strtoul(argv[1], NULL, 0);
180 
181 	return report_return_code(tpm_tsc_physical_presence(dev, presence));
182 }
183 
184 static int do_tpm_read_pubek(cmd_tbl_t *cmdtp, int flag, int argc,
185 			     char * const argv[])
186 {
187 	struct udevice *dev;
188 	u32 count, rc;
189 	void *data;
190 
191 	rc = get_tpm(&dev);
192 	if (rc)
193 		return rc;
194 
195 	if (argc != 3)
196 		return CMD_RET_USAGE;
197 	data = (void *)simple_strtoul(argv[1], NULL, 0);
198 	count = simple_strtoul(argv[2], NULL, 0);
199 
200 	rc = tpm_read_pubek(dev, data, count);
201 	if (!rc) {
202 		puts("pubek value:\n");
203 		print_byte_string(data, count);
204 	}
205 
206 	return report_return_code(rc);
207 }
208 
209 static int do_tpm_physical_set_deactivated(cmd_tbl_t *cmdtp, int flag, int argc,
210 					   char * const argv[])
211 {
212 	struct udevice *dev;
213 	u8 state;
214 	int rc;
215 
216 	rc = get_tpm(&dev);
217 	if (rc)
218 		return rc;
219 
220 	if (argc != 2)
221 		return CMD_RET_USAGE;
222 	state = (u8)simple_strtoul(argv[1], NULL, 0);
223 
224 	return report_return_code(tpm_physical_set_deactivated(dev, state));
225 }
226 
227 static int do_tpm_get_capability(cmd_tbl_t *cmdtp, int flag, int argc,
228 				 char * const argv[])
229 {
230 	u32 cap_area, sub_cap, rc;
231 	void *cap;
232 	size_t count;
233 	struct udevice *dev;
234 
235 	rc = get_tpm(&dev);
236 	if (rc)
237 		return rc;
238 
239 	if (argc != 5)
240 		return CMD_RET_USAGE;
241 	cap_area = simple_strtoul(argv[1], NULL, 0);
242 	sub_cap = simple_strtoul(argv[2], NULL, 0);
243 	cap = (void *)simple_strtoul(argv[3], NULL, 0);
244 	count = simple_strtoul(argv[4], NULL, 0);
245 
246 	rc = tpm_get_capability(dev, cap_area, sub_cap, cap, count);
247 	if (!rc) {
248 		puts("capability information:\n");
249 		print_byte_string(cap, count);
250 	}
251 
252 	return report_return_code(rc);
253 }
254 
255 static int do_tpm_raw_transfer(cmd_tbl_t *cmdtp, int flag, int argc,
256 			       char * const argv[])
257 {
258 	struct udevice *dev;
259 	void *command;
260 	u8 response[1024];
261 	size_t count, response_length = sizeof(response);
262 	u32 rc;
263 
264 	command = parse_byte_string(argv[1], NULL, &count);
265 	if (!command) {
266 		printf("Couldn't parse byte string %s\n", argv[1]);
267 		return CMD_RET_FAILURE;
268 	}
269 
270 	rc = get_tpm(&dev);
271 	if (rc)
272 		return rc;
273 
274 	rc = tpm_xfer(dev, command, count, response, &response_length);
275 	free(command);
276 	if (!rc) {
277 		puts("tpm response:\n");
278 		print_byte_string(response, response_length);
279 	}
280 
281 	return report_return_code(rc);
282 }
283 
284 static int do_tpm_nv_define(cmd_tbl_t *cmdtp, int flag, int argc,
285 			    char * const argv[])
286 {
287 	u32 index, perm, size;
288 	struct udevice *dev;
289 	int rc;
290 
291 	rc = get_tpm(&dev);
292 	if (rc)
293 		return rc;
294 
295 	if (argc != 4)
296 		return CMD_RET_USAGE;
297 	size = type_string_get_space_size(argv[1]);
298 	if (!size) {
299 		printf("Couldn't parse arguments\n");
300 		return CMD_RET_USAGE;
301 	}
302 	index = simple_strtoul(argv[2], NULL, 0);
303 	perm = simple_strtoul(argv[3], NULL, 0);
304 
305 	return report_return_code(tpm_nv_define_space(dev, index, perm, size));
306 }
307 
308 static int do_tpm_nv_read(cmd_tbl_t *cmdtp, int flag, int argc,
309 			  char * const argv[])
310 {
311 	u32 index, count, err;
312 	struct udevice *dev;
313 	void *data;
314 	int rc;
315 
316 	rc = get_tpm(&dev);
317 	if (rc)
318 		return rc;
319 
320 	if (argc < 3)
321 		return CMD_RET_USAGE;
322 	if (argc != 3 + type_string_get_num_values(argv[1]))
323 		return CMD_RET_USAGE;
324 	index = simple_strtoul(argv[2], NULL, 0);
325 	data = type_string_alloc(argv[1], &count);
326 	if (!data) {
327 		printf("Couldn't parse arguments\n");
328 		return CMD_RET_USAGE;
329 	}
330 
331 	err = tpm_nv_read_value(dev, index, data, count);
332 	if (!err) {
333 		if (type_string_write_vars(argv[1], data, argv + 3)) {
334 			printf("Couldn't write to variables\n");
335 			err = ~0;
336 		}
337 	}
338 	free(data);
339 
340 	return report_return_code(err);
341 }
342 
343 static int do_tpm_nv_write(cmd_tbl_t *cmdtp, int flag, int argc,
344 			   char * const argv[])
345 {
346 	u32 index, count, err;
347 	struct udevice *dev;
348 	void *data;
349 	int rc;
350 
351 	rc = get_tpm(&dev);
352 	if (rc)
353 		return rc;
354 
355 	if (argc < 3)
356 		return CMD_RET_USAGE;
357 	if (argc != 3 + type_string_get_num_values(argv[1]))
358 		return CMD_RET_USAGE;
359 	index = simple_strtoul(argv[2], NULL, 0);
360 	data = type_string_alloc(argv[1], &count);
361 	if (!data) {
362 		printf("Couldn't parse arguments\n");
363 		return CMD_RET_USAGE;
364 	}
365 	if (type_string_pack(argv[1], argv + 3, data)) {
366 		printf("Couldn't parse arguments\n");
367 		free(data);
368 		return CMD_RET_USAGE;
369 	}
370 
371 	err = tpm_nv_write_value(dev, index, data, count);
372 	free(data);
373 
374 	return report_return_code(err);
375 }
376 
377 #ifdef CONFIG_TPM_AUTH_SESSIONS
378 
379 static int do_tpm_oiap(cmd_tbl_t *cmdtp, int flag, int argc,
380 		       char * const argv[])
381 {
382 	u32 auth_handle, err;
383 	struct udevice *dev;
384 	int rc;
385 
386 	rc = get_tpm(&dev);
387 	if (rc)
388 		return rc;
389 
390 	err = tpm_oiap(dev, &auth_handle);
391 
392 	return report_return_code(err);
393 }
394 
395 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
396 static int do_tpm_load_key_by_sha1(cmd_tbl_t *cmdtp, int flag, int argc, char *
397 				   const argv[])
398 {
399 	u32 parent_handle = 0;
400 	u32 key_len, key_handle, err;
401 	u8 usage_auth[DIGEST_LENGTH];
402 	u8 parent_hash[DIGEST_LENGTH];
403 	void *key;
404 	struct udevice *dev;
405 
406 	rc = get_tpm(&dev);
407 	if (rc)
408 		return rc;
409 
410 	if (argc < 5)
411 		return CMD_RET_USAGE;
412 
413 	parse_byte_string(argv[1], parent_hash, NULL);
414 	key = (void *)simple_strtoul(argv[2], NULL, 0);
415 	key_len = simple_strtoul(argv[3], NULL, 0);
416 	if (strlen(argv[4]) != 2 * DIGEST_LENGTH)
417 		return CMD_RET_FAILURE;
418 	parse_byte_string(argv[4], usage_auth, NULL);
419 
420 	err = tpm_find_key_sha1(usage_auth, parent_hash, &parent_handle);
421 	if (err) {
422 		printf("Could not find matching parent key (err = %d)\n", err);
423 		return CMD_RET_FAILURE;
424 	}
425 
426 	printf("Found parent key %08x\n", parent_handle);
427 
428 	err = tpm_load_key2_oiap(parent_handle, key, key_len, usage_auth,
429 				 &key_handle);
430 	if (!err) {
431 		printf("Key handle is 0x%x\n", key_handle);
432 		env_set_hex("key_handle", key_handle);
433 	}
434 
435 	return report_return_code(err);
436 }
437 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
438 
439 static int do_tpm_load_key2_oiap(cmd_tbl_t *cmdtp, int flag, int argc,
440 				 char * const argv[])
441 {
442 	u32 parent_handle, key_len, key_handle, err;
443 	u8 usage_auth[DIGEST_LENGTH];
444 	void *key;
445 	struct udevice *dev;
446 	int rc;
447 
448 	rc = get_tpm(&dev);
449 	if (rc)
450 		return rc;
451 
452 	if (argc < 5)
453 		return CMD_RET_USAGE;
454 
455 	parent_handle = simple_strtoul(argv[1], NULL, 0);
456 	key = (void *)simple_strtoul(argv[2], NULL, 0);
457 	key_len = simple_strtoul(argv[3], NULL, 0);
458 	if (strlen(argv[4]) != 2 * DIGEST_LENGTH)
459 		return CMD_RET_FAILURE;
460 	parse_byte_string(argv[4], usage_auth, NULL);
461 
462 	err = tpm_load_key2_oiap(dev, parent_handle, key, key_len, usage_auth,
463 				 &key_handle);
464 	if (!err)
465 		printf("Key handle is 0x%x\n", key_handle);
466 
467 	return report_return_code(err);
468 }
469 
470 static int do_tpm_get_pub_key_oiap(cmd_tbl_t *cmdtp, int flag, int argc,
471 				   char * const argv[])
472 {
473 	u32 key_handle, err;
474 	u8 usage_auth[DIGEST_LENGTH];
475 	u8 pub_key_buffer[TPM_PUBKEY_MAX_LENGTH];
476 	size_t pub_key_len = sizeof(pub_key_buffer);
477 	struct udevice *dev;
478 	int rc;
479 
480 	rc = get_tpm(&dev);
481 	if (rc)
482 		return rc;
483 
484 	if (argc < 3)
485 		return CMD_RET_USAGE;
486 
487 	key_handle = simple_strtoul(argv[1], NULL, 0);
488 	if (strlen(argv[2]) != 2 * DIGEST_LENGTH)
489 		return CMD_RET_FAILURE;
490 	parse_byte_string(argv[2], usage_auth, NULL);
491 
492 	err = tpm_get_pub_key_oiap(dev, key_handle, usage_auth, pub_key_buffer,
493 				   &pub_key_len);
494 	if (!err) {
495 		printf("dump of received pub key structure:\n");
496 		print_byte_string(pub_key_buffer, pub_key_len);
497 	}
498 	return report_return_code(err);
499 }
500 
501 TPM_COMMAND_NO_ARG(tpm_end_oiap)
502 
503 #endif /* CONFIG_TPM_AUTH_SESSIONS */
504 
505 #ifdef CONFIG_TPM_FLUSH_RESOURCES
506 static int do_tpm_flush(cmd_tbl_t *cmdtp, int flag, int argc,
507 			char * const argv[])
508 {
509 	struct udevice *dev;
510 	int type = 0;
511 	int rc;
512 
513 	rc = get_tpm(&dev);
514 	if (rc)
515 		return rc;
516 
517 	if (argc != 3)
518 		return CMD_RET_USAGE;
519 
520 	if (!strcasecmp(argv[1], "key"))
521 		type = TPM_RT_KEY;
522 	else if (!strcasecmp(argv[1], "auth"))
523 		type = TPM_RT_AUTH;
524 	else if (!strcasecmp(argv[1], "hash"))
525 		type = TPM_RT_HASH;
526 	else if (!strcasecmp(argv[1], "trans"))
527 		type = TPM_RT_TRANS;
528 	else if (!strcasecmp(argv[1], "context"))
529 		type = TPM_RT_CONTEXT;
530 	else if (!strcasecmp(argv[1], "counter"))
531 		type = TPM_RT_COUNTER;
532 	else if (!strcasecmp(argv[1], "delegate"))
533 		type = TPM_RT_DELEGATE;
534 	else if (!strcasecmp(argv[1], "daa_tpm"))
535 		type = TPM_RT_DAA_TPM;
536 	else if (!strcasecmp(argv[1], "daa_v0"))
537 		type = TPM_RT_DAA_V0;
538 	else if (!strcasecmp(argv[1], "daa_v1"))
539 		type = TPM_RT_DAA_V1;
540 
541 	if (!type) {
542 		printf("Resource type %s unknown.\n", argv[1]);
543 		return -1;
544 	}
545 
546 	if (!strcasecmp(argv[2], "all")) {
547 		u16 res_count;
548 		u8 buf[288];
549 		u8 *ptr;
550 		int err;
551 		uint i;
552 
553 		/* fetch list of already loaded resources in the TPM */
554 		err = tpm_get_capability(dev, TPM_CAP_HANDLE, type, buf,
555 					 sizeof(buf));
556 		if (err) {
557 			printf("tpm_get_capability returned error %d.\n", err);
558 			return -1;
559 		}
560 		res_count = get_unaligned_be16(buf);
561 		ptr = buf + 2;
562 		for (i = 0; i < res_count; ++i, ptr += 4)
563 			tpm_flush_specific(dev, get_unaligned_be32(ptr), type);
564 	} else {
565 		u32 handle = simple_strtoul(argv[2], NULL, 0);
566 
567 		if (!handle) {
568 			printf("Illegal resource handle %s\n", argv[2]);
569 			return -1;
570 		}
571 		tpm_flush_specific(dev, cpu_to_be32(handle), type);
572 	}
573 
574 	return 0;
575 }
576 #endif /* CONFIG_TPM_FLUSH_RESOURCES */
577 
578 #ifdef CONFIG_TPM_LIST_RESOURCES
579 static int do_tpm_list(cmd_tbl_t *cmdtp, int flag, int argc,
580 		       char * const argv[])
581 {
582 	int type = 0;
583 	u16 res_count;
584 	u8 buf[288];
585 	u8 *ptr;
586 	int err;
587 	uint i;
588 
589 	if (argc != 2)
590 		return CMD_RET_USAGE;
591 
592 	if (!strcasecmp(argv[1], "key"))
593 		type = TPM_RT_KEY;
594 	else if (!strcasecmp(argv[1], "auth"))
595 		type = TPM_RT_AUTH;
596 	else if (!strcasecmp(argv[1], "hash"))
597 		type = TPM_RT_HASH;
598 	else if (!strcasecmp(argv[1], "trans"))
599 		type = TPM_RT_TRANS;
600 	else if (!strcasecmp(argv[1], "context"))
601 		type = TPM_RT_CONTEXT;
602 	else if (!strcasecmp(argv[1], "counter"))
603 		type = TPM_RT_COUNTER;
604 	else if (!strcasecmp(argv[1], "delegate"))
605 		type = TPM_RT_DELEGATE;
606 	else if (!strcasecmp(argv[1], "daa_tpm"))
607 		type = TPM_RT_DAA_TPM;
608 	else if (!strcasecmp(argv[1], "daa_v0"))
609 		type = TPM_RT_DAA_V0;
610 	else if (!strcasecmp(argv[1], "daa_v1"))
611 		type = TPM_RT_DAA_V1;
612 
613 	if (!type) {
614 		printf("Resource type %s unknown.\n", argv[1]);
615 		return -1;
616 	}
617 
618 	/* fetch list of already loaded resources in the TPM */
619 	err = tpm_get_capability(TPM_CAP_HANDLE, type, buf,
620 				 sizeof(buf));
621 	if (err) {
622 		printf("tpm_get_capability returned error %d.\n", err);
623 		return -1;
624 	}
625 	res_count = get_unaligned_be16(buf);
626 	ptr = buf + 2;
627 
628 	printf("Resources of type %s (%02x):\n", argv[1], type);
629 	if (!res_count) {
630 		puts("None\n");
631 	} else {
632 		for (i = 0; i < res_count; ++i, ptr += 4)
633 			printf("Index %d: %08x\n", i, get_unaligned_be32(ptr));
634 	}
635 
636 	return 0;
637 }
638 #endif /* CONFIG_TPM_LIST_RESOURCES */
639 
640 TPM_COMMAND_NO_ARG(tpm_self_test_full)
641 TPM_COMMAND_NO_ARG(tpm_continue_self_test)
642 TPM_COMMAND_NO_ARG(tpm_force_clear)
643 TPM_COMMAND_NO_ARG(tpm_physical_enable)
644 TPM_COMMAND_NO_ARG(tpm_physical_disable)
645 
646 static cmd_tbl_t tpm1_commands[] = {
647 	U_BOOT_CMD_MKENT(info, 0, 1, do_tpm_info, "", ""),
648 	U_BOOT_CMD_MKENT(init, 0, 1, do_tpm_init, "", ""),
649 	U_BOOT_CMD_MKENT(startup, 0, 1,
650 			 do_tpm_startup, "", ""),
651 	U_BOOT_CMD_MKENT(self_test_full, 0, 1,
652 			 do_tpm_self_test_full, "", ""),
653 	U_BOOT_CMD_MKENT(continue_self_test, 0, 1,
654 			 do_tpm_continue_self_test, "", ""),
655 	U_BOOT_CMD_MKENT(force_clear, 0, 1,
656 			 do_tpm_force_clear, "", ""),
657 	U_BOOT_CMD_MKENT(physical_enable, 0, 1,
658 			 do_tpm_physical_enable, "", ""),
659 	U_BOOT_CMD_MKENT(physical_disable, 0, 1,
660 			 do_tpm_physical_disable, "", ""),
661 	U_BOOT_CMD_MKENT(nv_define_space, 0, 1,
662 			 do_tpm_nv_define_space, "", ""),
663 	U_BOOT_CMD_MKENT(nv_read_value, 0, 1,
664 			 do_tpm_nv_read_value, "", ""),
665 	U_BOOT_CMD_MKENT(nv_write_value, 0, 1,
666 			 do_tpm_nv_write_value, "", ""),
667 	U_BOOT_CMD_MKENT(extend, 0, 1,
668 			 do_tpm_extend, "", ""),
669 	U_BOOT_CMD_MKENT(pcr_read, 0, 1,
670 			 do_tpm_pcr_read, "", ""),
671 	U_BOOT_CMD_MKENT(tsc_physical_presence, 0, 1,
672 			 do_tpm_tsc_physical_presence, "", ""),
673 	U_BOOT_CMD_MKENT(read_pubek, 0, 1,
674 			 do_tpm_read_pubek, "", ""),
675 	U_BOOT_CMD_MKENT(physical_set_deactivated, 0, 1,
676 			 do_tpm_physical_set_deactivated, "", ""),
677 	U_BOOT_CMD_MKENT(get_capability, 0, 1,
678 			 do_tpm_get_capability, "", ""),
679 	U_BOOT_CMD_MKENT(raw_transfer, 0, 1,
680 			 do_tpm_raw_transfer, "", ""),
681 	U_BOOT_CMD_MKENT(nv_define, 0, 1,
682 			 do_tpm_nv_define, "", ""),
683 	U_BOOT_CMD_MKENT(nv_read, 0, 1,
684 			 do_tpm_nv_read, "", ""),
685 	U_BOOT_CMD_MKENT(nv_write, 0, 1,
686 			 do_tpm_nv_write, "", ""),
687 #ifdef CONFIG_TPM_AUTH_SESSIONS
688 	U_BOOT_CMD_MKENT(oiap, 0, 1,
689 			 do_tpm_oiap, "", ""),
690 	U_BOOT_CMD_MKENT(end_oiap, 0, 1,
691 			 do_tpm_end_oiap, "", ""),
692 	U_BOOT_CMD_MKENT(load_key2_oiap, 0, 1,
693 			 do_tpm_load_key2_oiap, "", ""),
694 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
695 	U_BOOT_CMD_MKENT(load_key_by_sha1, 0, 1,
696 			 do_tpm_load_key_by_sha1, "", ""),
697 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
698 	U_BOOT_CMD_MKENT(get_pub_key_oiap, 0, 1,
699 			 do_tpm_get_pub_key_oiap, "", ""),
700 #endif /* CONFIG_TPM_AUTH_SESSIONS */
701 #ifdef CONFIG_TPM_FLUSH_RESOURCES
702 	U_BOOT_CMD_MKENT(flush, 0, 1,
703 			 do_tpm_flush, "", ""),
704 #endif /* CONFIG_TPM_FLUSH_RESOURCES */
705 #ifdef CONFIG_TPM_LIST_RESOURCES
706 	U_BOOT_CMD_MKENT(list, 0, 1,
707 			 do_tpm_list, "", ""),
708 #endif /* CONFIG_TPM_LIST_RESOURCES */
709 };
710 
711 cmd_tbl_t *get_tpm1_commands(unsigned int *size)
712 {
713 	*size = ARRAY_SIZE(tpm1_commands);
714 
715 	return tpm1_commands;
716 }
717 
718 U_BOOT_CMD(tpm, CONFIG_SYS_MAXARGS, 1, do_tpm,
719 "Issue a TPMv1.x command",
720 "cmd args...\n"
721 "    - Issue TPM command <cmd> with arguments <args...>.\n"
722 "Admin Startup and State Commands:\n"
723 "  info - Show information about the TPM\n"
724 "  init\n"
725 "    - Put TPM into a state where it waits for 'startup' command.\n"
726 "  startup mode\n"
727 "    - Issue TPM_Starup command.  <mode> is one of TPM_ST_CLEAR,\n"
728 "      TPM_ST_STATE, and TPM_ST_DEACTIVATED.\n"
729 "Admin Testing Commands:\n"
730 "  self_test_full\n"
731 "    - Test all of the TPM capabilities.\n"
732 "  continue_self_test\n"
733 "    - Inform TPM that it should complete the self-test.\n"
734 "Admin Opt-in Commands:\n"
735 "  physical_enable\n"
736 "    - Set the PERMANENT disable flag to FALSE using physical presence as\n"
737 "      authorization.\n"
738 "  physical_disable\n"
739 "    - Set the PERMANENT disable flag to TRUE using physical presence as\n"
740 "      authorization.\n"
741 "  physical_set_deactivated 0|1\n"
742 "    - Set deactivated flag.\n"
743 "Admin Ownership Commands:\n"
744 "  force_clear\n"
745 "    - Issue TPM_ForceClear command.\n"
746 "  tsc_physical_presence flags\n"
747 "    - Set TPM device's Physical Presence flags to <flags>.\n"
748 "The Capability Commands:\n"
749 "  get_capability cap_area sub_cap addr count\n"
750 "    - Read <count> bytes of TPM capability indexed by <cap_area> and\n"
751 "      <sub_cap> to memory address <addr>.\n"
752 #if defined(CONFIG_TPM_FLUSH_RESOURCES) || defined(CONFIG_TPM_LIST_RESOURCES)
753 "Resource management functions\n"
754 #endif
755 #ifdef CONFIG_TPM_FLUSH_RESOURCES
756 "  flush resource_type id\n"
757 "    - flushes a resource of type <resource_type> (may be one of key, auth,\n"
758 "      hash, trans, context, counter, delegate, daa_tpm, daa_v0, daa_v1),\n"
759 "      and id <id> from the TPM. Use an <id> of \"all\" to flush all\n"
760 "      resources of that type.\n"
761 #endif /* CONFIG_TPM_FLUSH_RESOURCES */
762 #ifdef CONFIG_TPM_LIST_RESOURCES
763 "  list resource_type\n"
764 "    - lists resources of type <resource_type> (may be one of key, auth,\n"
765 "      hash, trans, context, counter, delegate, daa_tpm, daa_v0, daa_v1),\n"
766 "      contained in the TPM.\n"
767 #endif /* CONFIG_TPM_LIST_RESOURCES */
768 #ifdef CONFIG_TPM_AUTH_SESSIONS
769 "Storage functions\n"
770 "  loadkey2_oiap parent_handle key_addr key_len usage_auth\n"
771 "    - loads a key data from memory address <key_addr>, <key_len> bytes\n"
772 "      into TPM using the parent key <parent_handle> with authorization\n"
773 "      <usage_auth> (20 bytes hex string).\n"
774 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
775 "  load_key_by_sha1 parent_hash key_addr key_len usage_auth\n"
776 "    - loads a key data from memory address <key_addr>, <key_len> bytes\n"
777 "      into TPM using the parent hash <parent_hash> (20 bytes hex string)\n"
778 "      with authorization <usage_auth> (20 bytes hex string).\n"
779 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
780 "  get_pub_key_oiap key_handle usage_auth\n"
781 "    - get the public key portion of a loaded key <key_handle> using\n"
782 "      authorization <usage auth> (20 bytes hex string)\n"
783 #endif /* CONFIG_TPM_AUTH_SESSIONS */
784 "Endorsement Key Handling Commands:\n"
785 "  read_pubek addr count\n"
786 "    - Read <count> bytes of the public endorsement key to memory\n"
787 "      address <addr>\n"
788 "Integrity Collection and Reporting Commands:\n"
789 "  extend index digest_hex_string\n"
790 "    - Add a new measurement to a PCR.  Update PCR <index> with the 20-bytes\n"
791 "      <digest_hex_string>\n"
792 "  pcr_read index addr count\n"
793 "    - Read <count> bytes from PCR <index> to memory address <addr>.\n"
794 #ifdef CONFIG_TPM_AUTH_SESSIONS
795 "Authorization Sessions\n"
796 "  oiap\n"
797 "    - setup an OIAP session\n"
798 "  end_oiap\n"
799 "    - terminates an active OIAP session\n"
800 #endif /* CONFIG_TPM_AUTH_SESSIONS */
801 "Non-volatile Storage Commands:\n"
802 "  nv_define_space index permission size\n"
803 "    - Establish a space at index <index> with <permission> of <size> bytes.\n"
804 "  nv_read_value index addr count\n"
805 "    - Read <count> bytes from space <index> to memory address <addr>.\n"
806 "  nv_write_value index addr count\n"
807 "    - Write <count> bytes from memory address <addr> to space <index>.\n"
808 "Miscellaneous helper functions:\n"
809 "  raw_transfer byte_string\n"
810 "    - Send a byte string <byte_string> to TPM and print the response.\n"
811 " Non-volatile storage helper functions:\n"
812 "    These helper functions treat a non-volatile space as a non-padded\n"
813 "    sequence of integer values.  These integer values are defined by a type\n"
814 "    string, which is a text string of 'bwd' characters: 'b' means a 8-bit\n"
815 "    value, 'w' 16-bit value, 'd' 32-bit value.  All helper functions take\n"
816 "    a type string as their first argument.\n"
817 "  nv_define type_string index perm\n"
818 "    - Define a space <index> with permission <perm>.\n"
819 "  nv_read types_string index vars...\n"
820 "    - Read from space <index> to environment variables <vars...>.\n"
821 "  nv_write types_string index values...\n"
822 "    - Write to space <index> from values <values...>.\n"
823 );
824