[thirdparty/u-boot.git] / cmd / tpm_test.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2015 Google, Inc
 */

#include <common.h>
#include <command.h>
#include <environment.h>
#include <tpm-v1.h>
#include "tpm-user-utils.h"

/* Prints error and returns on failure */
#define TPM_CHECK(tpm_command) do { \
	uint32_t result; \
	\
	result = (tpm_command); \
	if (result != TPM_SUCCESS) { \
		printf("TEST FAILED: line %d: " #tpm_command ": 0x%x\n", \
			__LINE__, result); \
		return result; \
	} \
} while (0)

#define INDEX0			0xda70
#define INDEX1			0xda71
#define INDEX2			0xda72
#define INDEX3			0xda73
#define INDEX_INITIALISED	0xda80
#define PHYS_PRESENCE		4
#define PRESENCE		8

static uint32_t TlclStartupIfNeeded(struct udevice *dev)
{
	uint32_t result = tpm_startup(dev, TPM_ST_CLEAR);

	return result == TPM_INVALID_POSTINIT ? TPM_SUCCESS : result;
}

static int test_timer(struct udevice *dev)
{
	printf("get_timer(0) = %lu\n", get_timer(0));
	return 0;
}

static uint32_t tpm_get_flags(struct udevice *dev, uint8_t *disable,
			      uint8_t *deactivated, uint8_t *nvlocked)
{
	struct tpm_permanent_flags pflags;
	uint32_t result;

	result = tpm_get_permanent_flags(dev, &pflags);
	if (result)
		return result;
	if (disable)
		*disable = pflags.disable;
	if (deactivated)
		*deactivated = pflags.deactivated;
	if (nvlocked)
		*nvlocked = pflags.nv_locked;
	debug("TPM: Got flags disable=%d, deactivated=%d, nvlocked=%d\n",
	      pflags.disable, pflags.deactivated, pflags.nv_locked);

	return 0;
}

static uint32_t tpm_nv_write_value_lock(struct udevice *dev, uint32_t index)
{
	debug("TPM: Write lock 0x%x\n", index);

	return tpm_nv_write_value(dev, index, NULL, 0);
}

static int tpm_is_owned(struct udevice *dev)
{
	uint8_t response[TPM_PUBEK_SIZE];
	uint32_t result;

	result = tpm_read_pubek(dev, response, sizeof(response));

	return result != TPM_SUCCESS;
}

static int test_early_extend(struct udevice *dev)
{
	uint8_t value_in[20];
	uint8_t value_out[20];

	printf("Testing earlyextend ...");
	tpm_init(dev);
	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	TPM_CHECK(tpm_continue_self_test(dev));
	TPM_CHECK(tpm_extend(dev, 1, value_in, value_out));
	printf("done\n");
	return 0;
}

static int test_early_nvram(struct udevice *dev)
{
	uint32_t x;

	printf("Testing earlynvram ...");
	tpm_init(dev);
	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	TPM_CHECK(tpm_continue_self_test(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	printf("done\n");
	return 0;
}

static int test_early_nvram2(struct udevice *dev)
{
	uint32_t x;

	printf("Testing earlynvram2 ...");
	tpm_init(dev);
	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	TPM_CHECK(tpm_continue_self_test(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	printf("done\n");
	return 0;
}

static int test_enable(struct udevice *dev)
{
	uint8_t disable = 0, deactivated = 0;

	printf("Testing enable ...\n");
	tpm_init(dev);
	TPM_CHECK(TlclStartupIfNeeded(dev));
	TPM_CHECK(tpm_self_test_full(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
	TPM_CHECK(tpm_physical_enable(dev));
	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
	if (disable == 1 || deactivated == 1)
		printf("\tfailed to enable or activate\n");
	printf("\tdone\n");
	return 0;
}

#define reboot() do { \
	printf("\trebooting...\n"); \
	reset_cpu(0); \
} while (0)

static int test_fast_enable(struct udevice *dev)
{
	uint8_t disable = 0, deactivated = 0;
	int i;

	printf("Testing fastenable ...\n");
	tpm_init(dev);
	TPM_CHECK(TlclStartupIfNeeded(dev));
	TPM_CHECK(tpm_self_test_full(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
	for (i = 0; i < 2; i++) {
		TPM_CHECK(tpm_force_clear(dev));
		TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
		printf("\tdisable is %d, deactivated is %d\n", disable,
		       deactivated);
		assert(disable == 1 && deactivated == 1);
		TPM_CHECK(tpm_physical_enable(dev));
		TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
		TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
		printf("\tdisable is %d, deactivated is %d\n", disable,
		       deactivated);
		assert(disable == 0 && deactivated == 0);
	}
	printf("\tdone\n");
	return 0;
}

static int test_global_lock(struct udevice *dev)
{
	uint32_t zero = 0;
	uint32_t result;
	uint32_t x;

	printf("Testing globallock ...\n");
	tpm_init(dev);
	TPM_CHECK(TlclStartupIfNeeded(dev));
	TPM_CHECK(tpm_self_test_full(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero,
				     sizeof(uint32_t)));
	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
	TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero,
				     sizeof(uint32_t)));
	TPM_CHECK(tpm_set_global_lock(dev));
	/* Verifies that write to index0 fails */
	x = 1;
	result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x));
	assert(result == TPM_AREA_LOCKED);
	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	assert(x == 0);
	/* Verifies that write to index1 is still possible */
	x = 2;
	TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
	assert(x == 2);
	/* Turns off PP */
	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
	/* Verifies that write to index1 fails */
	x = 3;
	result = tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x));
	assert(result == TPM_BAD_PRESENCE);
	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
	assert(x == 2);
	printf("\tdone\n");
	return 0;
}

static int test_lock(struct udevice *dev)
{
	printf("Testing lock ...\n");
	tpm_init(dev);
	tpm_startup(dev, TPM_ST_CLEAR);
	tpm_self_test_full(dev);
	tpm_tsc_physical_presence(dev, PRESENCE);
	tpm_nv_write_value_lock(dev, INDEX0);
	printf("\tLocked 0x%x\n", INDEX0);
	printf("\tdone\n");
	return 0;
}

static void initialise_spaces(struct udevice *dev)
{
	uint32_t zero = 0;
	uint32_t perm = TPM_NV_PER_WRITE_STCLEAR | TPM_NV_PER_PPWRITE;

	printf("\tInitialising spaces\n");
	tpm_nv_set_locked(dev);  /* useful only the first time */
	tpm_nv_define_space(dev, INDEX0, perm, 4);
	tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero, 4);
	tpm_nv_define_space(dev, INDEX1, perm, 4);
	tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero, 4);
	tpm_nv_define_space(dev, INDEX2, perm, 4);
	tpm_nv_write_value(dev, INDEX2, (uint8_t *)&zero, 4);
	tpm_nv_define_space(dev, INDEX3, perm, 4);
	tpm_nv_write_value(dev, INDEX3, (uint8_t *)&zero, 4);
	perm = TPM_NV_PER_READ_STCLEAR | TPM_NV_PER_WRITE_STCLEAR |
		TPM_NV_PER_PPWRITE;
	tpm_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
}

static int test_readonly(struct udevice *dev)
{
	uint8_t c;
	uint32_t index_0, index_1, index_2, index_3;
	int read0, read1, read2, read3;

	printf("Testing readonly ...\n");
	tpm_init(dev);
	tpm_startup(dev, TPM_ST_CLEAR);
	tpm_self_test_full(dev);
	tpm_tsc_physical_presence(dev, PRESENCE);
	/*
	 * Checks if initialisation has completed by trying to read-lock a
	 * space that's created at the end of initialisation
	 */
	if (tpm_nv_read_value(dev, INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
		/* The initialisation did not complete */
		initialise_spaces(dev);
	}

	/* Checks if spaces are OK or messed up */
	read0 = tpm_nv_read_value(dev, INDEX0, (uint8_t *)&index_0,
				  sizeof(index_0));
	read1 = tpm_nv_read_value(dev, INDEX1, (uint8_t *)&index_1,
				  sizeof(index_1));
	read2 = tpm_nv_read_value(dev, INDEX2, (uint8_t *)&index_2,
				  sizeof(index_2));
	read3 = tpm_nv_read_value(dev, INDEX3, (uint8_t *)&index_3,
				  sizeof(index_3));
	if (read0 || read1 || read2 || read3) {
		printf("Invalid contents\n");
		return 0;
	}

	/*
	 * Writes space, and locks it.  Then attempts to write again.
	 * I really wish I could use the imperative.
	 */
	index_0 += 1;
	if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
			       sizeof(index_0) !=
		TPM_SUCCESS)) {
		pr_err("\tcould not write index 0\n");
	}
	tpm_nv_write_value_lock(dev, INDEX0);
	if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
			       sizeof(index_0)) ==
			TPM_SUCCESS)
		pr_err("\tindex 0 is not locked\n");

	printf("\tdone\n");
	return 0;
}

static int test_redefine_unowned(struct udevice *dev)
{
	uint32_t perm;
	uint32_t result;
	uint32_t x;

	printf("Testing redefine_unowned ...");
	tpm_init(dev);
	TPM_CHECK(TlclStartupIfNeeded(dev));
	TPM_CHECK(tpm_self_test_full(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	assert(!tpm_is_owned(dev));

	/* Ensures spaces exist. */
	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));

	/* Redefines spaces a couple of times. */
	perm = TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK;
	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, 2 * sizeof(uint32_t)));
	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
	perm = TPM_NV_PER_PPWRITE;
	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));

	/* Sets the global lock */
	tpm_set_global_lock(dev);

	/* Verifies that index0 cannot be redefined */
	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
	assert(result == TPM_AREA_LOCKED);

	/* Checks that index1 can */
	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));

	/* Turns off PP */
	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);

	/* Verifies that neither index0 nor index1 can be redefined */
	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
	assert(result == TPM_BAD_PRESENCE);
	result = tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
	assert(result == TPM_BAD_PRESENCE);

	printf("done\n");
	return 0;
}

#define PERMPPGL (TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK)
#define PERMPP TPM_NV_PER_PPWRITE

static int test_space_perm(struct udevice *dev)
{
	uint32_t perm;

	printf("Testing spaceperm ...");
	tpm_init(dev);
	TPM_CHECK(TlclStartupIfNeeded(dev));
	TPM_CHECK(tpm_continue_self_test(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_get_permissions(dev, INDEX0, &perm));
	assert((perm & PERMPPGL) == PERMPPGL);
	TPM_CHECK(tpm_get_permissions(dev, INDEX1, &perm));
	assert((perm & PERMPP) == PERMPP);
	printf("done\n");
	return 0;
}

static int test_startup(struct udevice *dev)
{
	uint32_t result;

	printf("Testing startup ...\n");

	tpm_init(dev);
	result = tpm_startup(dev, TPM_ST_CLEAR);
	if (result != 0 && result != TPM_INVALID_POSTINIT)
		printf("\ttpm startup failed with 0x%x\n", result);
	result = tpm_get_flags(dev, NULL, NULL, NULL);
	if (result != 0)
		printf("\ttpm getflags failed with 0x%x\n", result);
	printf("\texecuting SelfTestFull\n");
	tpm_self_test_full(dev);
	result = tpm_get_flags(dev, NULL, NULL, NULL);
	if (result != 0)
		printf("\ttpm getflags failed with 0x%x\n", result);
	printf("\tdone\n");
	return 0;
}

/*
 * Runs [op] and ensures it returns success and doesn't run longer than
 * [time_limit] in milliseconds.
 */
#define TTPM_CHECK(op, time_limit) do { \
	ulong start, time; \
	uint32_t __result; \
	\
	start = get_timer(0); \
	__result = op; \
	if (__result != TPM_SUCCESS) { \
		printf("\t" #op ": error 0x%x\n", __result); \
		return -1; \
	} \
	time = get_timer(start); \
	printf("\t" #op ": %lu ms\n", time); \
	if (time > (ulong)time_limit) { \
		printf("\t" #op " exceeded " #time_limit " ms\n"); \
	} \
} while (0)


static int test_timing(struct udevice *dev)
{
	uint8_t in[20], out[20];
	uint32_t x;

	printf("Testing timing ...");
	tpm_init(dev);
	TTPM_CHECK(TlclStartupIfNeeded(dev), 50);
	TTPM_CHECK(tpm_continue_self_test(dev), 100);
	TTPM_CHECK(tpm_self_test_full(dev), 1000);
	TTPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE), 100);
	TTPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
		   100);
	TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
		   100);
	TTPM_CHECK(tpm_extend(dev, 0, in, out), 200);
	TTPM_CHECK(tpm_set_global_lock(dev), 50);
	TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
	printf("done\n");
	return 0;
}

#define TPM_MAX_NV_WRITES_NOOWNER 64

static int test_write_limit(struct udevice *dev)
{
	uint32_t result;
	int i;

	printf("Testing writelimit ...\n");
	tpm_init(dev);
	TPM_CHECK(TlclStartupIfNeeded(dev));
	TPM_CHECK(tpm_self_test_full(dev));
	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	TPM_CHECK(tpm_force_clear(dev));
	TPM_CHECK(tpm_physical_enable(dev));
	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));

	for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
		printf("\twriting %d\n", i);
		result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i,
					    sizeof(i));
		switch (result) {
		case TPM_SUCCESS:
			break;
		case TPM_MAXNVWRITES:
			assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
		default:
			pr_err("\tunexpected error code %d (0x%x)\n",
			      result, result);
		}
	}

	/* Reset write count */
	TPM_CHECK(tpm_force_clear(dev));
	TPM_CHECK(tpm_physical_enable(dev));
	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));

	/* Try writing again. */
	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i, sizeof(i)));
	printf("\tdone\n");
	return 0;
}

#define VOIDTEST(XFUNC) \
	int do_test_##XFUNC(cmd_tbl_t *cmd_tbl, int flag, int argc, \
	char * const argv[]) \
	{ \
		struct udevice *dev; \
		int ret; \
\
		ret = get_tpm(&dev); \
		if (ret) \
			return ret; \
		return test_##XFUNC(dev); \
	}

#define VOIDENT(XNAME) \
	U_BOOT_CMD_MKENT(XNAME, 0, 1, do_test_##XNAME, "", ""),

VOIDTEST(early_extend)
VOIDTEST(early_nvram)
VOIDTEST(early_nvram2)
VOIDTEST(enable)
VOIDTEST(fast_enable)
VOIDTEST(global_lock)
VOIDTEST(lock)
VOIDTEST(readonly)
VOIDTEST(redefine_unowned)
VOIDTEST(space_perm)
VOIDTEST(startup)
VOIDTEST(timing)
VOIDTEST(write_limit)
VOIDTEST(timer)

static cmd_tbl_t cmd_cros_tpm_sub[] = {
	VOIDENT(early_extend)
	VOIDENT(early_nvram)
	VOIDENT(early_nvram2)
	VOIDENT(enable)
	VOIDENT(fast_enable)
	VOIDENT(global_lock)
	VOIDENT(lock)
	VOIDENT(readonly)
	VOIDENT(redefine_unowned)
	VOIDENT(space_perm)
	VOIDENT(startup)
	VOIDENT(timing)
	VOIDENT(write_limit)
	VOIDENT(timer)
};

static int do_tpmtest(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	cmd_tbl_t *c;
	int i;

	printf("argc = %d, argv = ", argc);

	for (i = 0; i < argc; i++)
		printf(" %s", argv[i]);

	printf("\n------\n");

	argc--;
	argv++;
	c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,
			 ARRAY_SIZE(cmd_cros_tpm_sub));
	return c ? c->cmd(cmdtp, flag, argc, argv) : cmd_usage(cmdtp);
}

U_BOOT_CMD(tpmtest, 2, 1, do_tpmtest, "TPM tests",
	"\n\tearly_extend\n"
	"\tearly_nvram\n"
	"\tearly_nvram2\n"
	"\tenable\n"
	"\tfast_enable\n"
	"\tglobal_lock\n"
	"\tlock\n"
	"\treadonly\n"
	"\tredefine_unowned\n"
	"\tspace_perm\n"
	"\tstartup\n"
	"\ttiming\n"
	"\twrite_limit\n");
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
e76cb927 SG	2	/*
e76cb927 SG	3	* Copyright (c) 2015 Google, Inc
e76cb927 SG	4	*/
	5
	6	#include <common.h>
	7	#include <command.h>
	8	#include <environment.h>
d677bfe2	9	#include <tpm-v1.h>
abdc7b8a	10	#include "tpm-user-utils.h"
e76cb927 SG	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
abdc7b8a	32	static uint32_t TlclStartupIfNeeded(struct udevice *dev)
e76cb927	33	{
abdc7b8a	34	uint32_t result = tpm_startup(dev, TPM_ST_CLEAR);
e76cb927 SG	35
	36	return result == TPM_INVALID_POSTINIT ? TPM_SUCCESS : result;
	37	}
	38
abdc7b8a	39	static int test_timer(struct udevice *dev)
e76cb927 SG	40	{
	41	printf("get_timer(0) = %lu\n", get_timer(0));
	42	return 0;
	43	}
	44
abdc7b8a SG	45	static uint32_t tpm_get_flags(struct udevice dev, uint8_t disable,
abdc7b8a SG	46	uint8_t deactivated, uint8_t nvlocked)
e76cb927 SG	47	{
	48	struct tpm_permanent_flags pflags;
	49	uint32_t result;
	50
abdc7b8a	51	result = tpm_get_permanent_flags(dev, &pflags);
e76cb927 SG	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
abdc7b8a	66	static uint32_t tpm_nv_write_value_lock(struct udevice *dev, uint32_t index)
e76cb927 SG	67	{
	68	debug("TPM: Write lock 0x%x\n", index);
	69
abdc7b8a	70	return tpm_nv_write_value(dev, index, NULL, 0);
e76cb927 SG	71	}
e76cb927 SG	72
abdc7b8a	73	static int tpm_is_owned(struct udevice *dev)
e76cb927 SG	74	{
	75	uint8_t response[TPM_PUBEK_SIZE];
	76	uint32_t result;
	77
abdc7b8a	78	result = tpm_read_pubek(dev, response, sizeof(response));
e76cb927 SG	79
	80	return result != TPM_SUCCESS;
	81	}
	82
abdc7b8a	83	static int test_early_extend(struct udevice *dev)
e76cb927 SG	84	{
	85	uint8_t value_in[20];
	86	uint8_t value_out[20];
	87
	88	printf("Testing earlyextend ...");
abdc7b8a SG	89	tpm_init(dev);
	90	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	91	TPM_CHECK(tpm_continue_self_test(dev));
	92	TPM_CHECK(tpm_extend(dev, 1, value_in, value_out));
e76cb927 SG	93	printf("done\n");
	94	return 0;
	95	}
	96
abdc7b8a	97	static int test_early_nvram(struct udevice *dev)
e76cb927 SG	98	{
	99	uint32_t x;
	100
	101	printf("Testing earlynvram ...");
abdc7b8a SG	102	tpm_init(dev);
	103	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	104	TPM_CHECK(tpm_continue_self_test(dev));
	105	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	106	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	107	printf("done\n");
	108	return 0;
	109	}
	110
abdc7b8a	111	static int test_early_nvram2(struct udevice *dev)
e76cb927 SG	112	{
	113	uint32_t x;
	114
	115	printf("Testing earlynvram2 ...");
abdc7b8a SG	116	tpm_init(dev);
	117	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	118	TPM_CHECK(tpm_continue_self_test(dev));
	119	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	120	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	121	printf("done\n");
	122	return 0;
	123	}
	124
abdc7b8a	125	static int test_enable(struct udevice *dev)
e76cb927 SG	126	{
	127	uint8_t disable = 0, deactivated = 0;
	128
	129	printf("Testing enable ...\n");
abdc7b8a SG	130	tpm_init(dev);
	131	TPM_CHECK(TlclStartupIfNeeded(dev));
	132	TPM_CHECK(tpm_self_test_full(dev));
	133	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	134	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927	135	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
abdc7b8a SG	136	TPM_CHECK(tpm_physical_enable(dev));
	137	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
	138	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	139	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
	140	if (disable == 1 \|\| deactivated == 1)
	141	printf("\tfailed to enable or activate\n");
	142	printf("\tdone\n");
	143	return 0;
	144	}
	145
	146	#define reboot() do { \
	147	printf("\trebooting...\n"); \
	148	reset_cpu(0); \
	149	} while (0)
	150
abdc7b8a	151	static int test_fast_enable(struct udevice *dev)
e76cb927 SG	152	{
	153	uint8_t disable = 0, deactivated = 0;
	154	int i;
	155
	156	printf("Testing fastenable ...\n");
abdc7b8a SG	157	tpm_init(dev);
	158	TPM_CHECK(TlclStartupIfNeeded(dev));
	159	TPM_CHECK(tpm_self_test_full(dev));
	160	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	161	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	162	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
e76cb927 SG	163	for (i = 0; i < 2; i++) {
abdc7b8a SG	164	TPM_CHECK(tpm_force_clear(dev));
abdc7b8a SG	165	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	166	printf("\tdisable is %d, deactivated is %d\n", disable,
	167	deactivated);
	168	assert(disable == 1 && deactivated == 1);
abdc7b8a SG	169	TPM_CHECK(tpm_physical_enable(dev));
	170	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
	171	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	172	printf("\tdisable is %d, deactivated is %d\n", disable,
	173	deactivated);
	174	assert(disable == 0 && deactivated == 0);
	175	}
	176	printf("\tdone\n");
	177	return 0;
	178	}
	179
abdc7b8a	180	static int test_global_lock(struct udevice *dev)
e76cb927 SG	181	{
	182	uint32_t zero = 0;
	183	uint32_t result;
	184	uint32_t x;
	185
	186	printf("Testing globallock ...\n");
abdc7b8a SG	187	tpm_init(dev);
	188	TPM_CHECK(TlclStartupIfNeeded(dev));
	189	TPM_CHECK(tpm_self_test_full(dev));
	190	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	191	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	192	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero,
e76cb927	193	sizeof(uint32_t)));
abdc7b8a SG	194	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
abdc7b8a SG	195	TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero,
e76cb927	196	sizeof(uint32_t)));
abdc7b8a	197	TPM_CHECK(tpm_set_global_lock(dev));
e76cb927 SG	198	/* Verifies that write to index0 fails */
e76cb927 SG	199	x = 1;
abdc7b8a	200	result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x));
e76cb927	201	assert(result == TPM_AREA_LOCKED);
abdc7b8a	202	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	203	assert(x == 0);
	204	/* Verifies that write to index1 is still possible */
	205	x = 2;
abdc7b8a SG	206	TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
abdc7b8a SG	207	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	208	assert(x == 2);
e76cb927 SG	209	/* Turns off PP */
abdc7b8a	210	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
e76cb927 SG	211	/* Verifies that write to index1 fails */
e76cb927 SG	212	x = 3;
abdc7b8a	213	result = tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x));
e76cb927	214	assert(result == TPM_BAD_PRESENCE);
abdc7b8a	215	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	216	assert(x == 2);
	217	printf("\tdone\n");
	218	return 0;
	219	}
	220
abdc7b8a	221	static int test_lock(struct udevice *dev)
e76cb927 SG	222	{
e76cb927 SG	223	printf("Testing lock ...\n");
abdc7b8a SG	224	tpm_init(dev);
	225	tpm_startup(dev, TPM_ST_CLEAR);
	226	tpm_self_test_full(dev);
	227	tpm_tsc_physical_presence(dev, PRESENCE);
	228	tpm_nv_write_value_lock(dev, INDEX0);
e76cb927 SG	229	printf("\tLocked 0x%x\n", INDEX0);
	230	printf("\tdone\n");
	231	return 0;
	232	}
	233
abdc7b8a	234	static void initialise_spaces(struct udevice *dev)
e76cb927 SG	235	{
	236	uint32_t zero = 0;
	237	uint32_t perm = TPM_NV_PER_WRITE_STCLEAR \| TPM_NV_PER_PPWRITE;
	238
	239	printf("\tInitialising spaces\n");
abdc7b8a SG	240	tpm_nv_set_locked(dev); /* useful only the first time */
	241	tpm_nv_define_space(dev, INDEX0, perm, 4);
	242	tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero, 4);
	243	tpm_nv_define_space(dev, INDEX1, perm, 4);
	244	tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero, 4);
	245	tpm_nv_define_space(dev, INDEX2, perm, 4);
	246	tpm_nv_write_value(dev, INDEX2, (uint8_t *)&zero, 4);
	247	tpm_nv_define_space(dev, INDEX3, perm, 4);
	248	tpm_nv_write_value(dev, INDEX3, (uint8_t *)&zero, 4);
e76cb927 SG	249	perm = TPM_NV_PER_READ_STCLEAR \| TPM_NV_PER_WRITE_STCLEAR \|
e76cb927 SG	250	TPM_NV_PER_PPWRITE;
abdc7b8a	251	tpm_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
e76cb927 SG	252	}
e76cb927 SG	253
abdc7b8a	254	static int test_readonly(struct udevice *dev)
e76cb927 SG	255	{
	256	uint8_t c;
	257	uint32_t index_0, index_1, index_2, index_3;
	258	int read0, read1, read2, read3;
	259
	260	printf("Testing readonly ...\n");
abdc7b8a SG	261	tpm_init(dev);
	262	tpm_startup(dev, TPM_ST_CLEAR);
	263	tpm_self_test_full(dev);
	264	tpm_tsc_physical_presence(dev, PRESENCE);
e76cb927 SG	265	/*
	266	* Checks if initialisation has completed by trying to read-lock a
	267	* space that's created at the end of initialisation
	268	*/
abdc7b8a	269	if (tpm_nv_read_value(dev, INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
e76cb927	270	/* The initialisation did not complete */
abdc7b8a	271	initialise_spaces(dev);
e76cb927 SG	272	}
	273
	274	/* Checks if spaces are OK or messed up */
abdc7b8a SG	275	read0 = tpm_nv_read_value(dev, INDEX0, (uint8_t *)&index_0,
	276	sizeof(index_0));
	277	read1 = tpm_nv_read_value(dev, INDEX1, (uint8_t *)&index_1,
	278	sizeof(index_1));
	279	read2 = tpm_nv_read_value(dev, INDEX2, (uint8_t *)&index_2,
	280	sizeof(index_2));
	281	read3 = tpm_nv_read_value(dev, INDEX3, (uint8_t *)&index_3,
	282	sizeof(index_3));
e76cb927 SG	283	if (read0 \|\| read1 \|\| read2 \|\| read3) {
	284	printf("Invalid contents\n");
	285	return 0;
	286	}
	287
	288	/*
	289	* Writes space, and locks it. Then attempts to write again.
	290	* I really wish I could use the imperative.
	291	*/
	292	index_0 += 1;
abdc7b8a SG	293	if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
abdc7b8a SG	294	sizeof(index_0) !=
e76cb927	295	TPM_SUCCESS)) {
9b643e31	296	pr_err("\tcould not write index 0\n");
e76cb927	297	}
abdc7b8a SG	298	tpm_nv_write_value_lock(dev, INDEX0);
	299	if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
	300	sizeof(index_0)) ==
e76cb927	301	TPM_SUCCESS)
9b643e31	302	pr_err("\tindex 0 is not locked\n");
e76cb927 SG	303
	304	printf("\tdone\n");
	305	return 0;
	306	}
	307
abdc7b8a	308	static int test_redefine_unowned(struct udevice *dev)
e76cb927 SG	309	{
	310	uint32_t perm;
	311	uint32_t result;
	312	uint32_t x;
	313
	314	printf("Testing redefine_unowned ...");
abdc7b8a SG	315	tpm_init(dev);
	316	TPM_CHECK(TlclStartupIfNeeded(dev));
	317	TPM_CHECK(tpm_self_test_full(dev));
	318	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	319	assert(!tpm_is_owned(dev));
e76cb927 SG	320
e76cb927 SG	321	/* Ensures spaces exist. */
abdc7b8a SG	322	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
abdc7b8a SG	323	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	324
	325	/* Redefines spaces a couple of times. */
	326	perm = TPM_NV_PER_PPWRITE \| TPM_NV_PER_GLOBALLOCK;
abdc7b8a SG	327	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, 2 * sizeof(uint32_t)));
abdc7b8a SG	328	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
e76cb927	329	perm = TPM_NV_PER_PPWRITE;
abdc7b8a SG	330	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
abdc7b8a SG	331	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
e76cb927 SG	332
e76cb927 SG	333	/* Sets the global lock */
abdc7b8a	334	tpm_set_global_lock(dev);
e76cb927 SG	335
e76cb927 SG	336	/* Verifies that index0 cannot be redefined */
abdc7b8a	337	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
e76cb927 SG	338	assert(result == TPM_AREA_LOCKED);
	339
	340	/* Checks that index1 can */
abdc7b8a SG	341	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
abdc7b8a SG	342	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
e76cb927 SG	343
e76cb927 SG	344	/* Turns off PP */
abdc7b8a	345	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
e76cb927 SG	346
e76cb927 SG	347	/* Verifies that neither index0 nor index1 can be redefined */
abdc7b8a	348	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
e76cb927	349	assert(result == TPM_BAD_PRESENCE);
abdc7b8a	350	result = tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
e76cb927 SG	351	assert(result == TPM_BAD_PRESENCE);
	352
	353	printf("done\n");
	354	return 0;
	355	}
	356
	357	#define PERMPPGL (TPM_NV_PER_PPWRITE \| TPM_NV_PER_GLOBALLOCK)
	358	#define PERMPP TPM_NV_PER_PPWRITE
	359
abdc7b8a	360	static int test_space_perm(struct udevice *dev)
e76cb927 SG	361	{
	362	uint32_t perm;
	363
	364	printf("Testing spaceperm ...");
abdc7b8a SG	365	tpm_init(dev);
	366	TPM_CHECK(TlclStartupIfNeeded(dev));
	367	TPM_CHECK(tpm_continue_self_test(dev));
	368	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	369	TPM_CHECK(tpm_get_permissions(dev, INDEX0, &perm));
e76cb927	370	assert((perm & PERMPPGL) == PERMPPGL);
abdc7b8a	371	TPM_CHECK(tpm_get_permissions(dev, INDEX1, &perm));
e76cb927 SG	372	assert((perm & PERMPP) == PERMPP);
	373	printf("done\n");
	374	return 0;
	375	}
	376
abdc7b8a	377	static int test_startup(struct udevice *dev)
e76cb927 SG	378	{
e76cb927 SG	379	uint32_t result;
abdc7b8a	380
e76cb927 SG	381	printf("Testing startup ...\n");
e76cb927 SG	382
abdc7b8a SG	383	tpm_init(dev);
abdc7b8a SG	384	result = tpm_startup(dev, TPM_ST_CLEAR);
e76cb927 SG	385	if (result != 0 && result != TPM_INVALID_POSTINIT)
e76cb927 SG	386	printf("\ttpm startup failed with 0x%x\n", result);
abdc7b8a	387	result = tpm_get_flags(dev, NULL, NULL, NULL);
e76cb927 SG	388	if (result != 0)
	389	printf("\ttpm getflags failed with 0x%x\n", result);
	390	printf("\texecuting SelfTestFull\n");
abdc7b8a SG	391	tpm_self_test_full(dev);
abdc7b8a SG	392	result = tpm_get_flags(dev, NULL, NULL, NULL);
e76cb927 SG	393	if (result != 0)
	394	printf("\ttpm getflags failed with 0x%x\n", result);
	395	printf("\tdone\n");
	396	return 0;
	397	}
	398
	399	/*
	400	* Runs [op] and ensures it returns success and doesn't run longer than
	401	* [time_limit] in milliseconds.
	402	*/
	403	#define TTPM_CHECK(op, time_limit) do { \
	404	ulong start, time; \
	405	uint32_t __result; \
	406	\
	407	start = get_timer(0); \
	408	__result = op; \
	409	if (__result != TPM_SUCCESS) { \
	410	printf("\t" #op ": error 0x%x\n", __result); \
	411	return -1; \
	412	} \
	413	time = get_timer(start); \
	414	printf("\t" #op ": %lu ms\n", time); \
	415	if (time > (ulong)time_limit) { \
	416	printf("\t" #op " exceeded " #time_limit " ms\n"); \
	417	} \
	418	} while (0)
	419
	420
abdc7b8a	421	static int test_timing(struct udevice *dev)
e76cb927	422	{
e76cb927	423	uint8_t in[20], out[20];
abdc7b8a	424	uint32_t x;
e76cb927 SG	425
e76cb927 SG	426	printf("Testing timing ...");
abdc7b8a SG	427	tpm_init(dev);
	428	TTPM_CHECK(TlclStartupIfNeeded(dev), 50);
	429	TTPM_CHECK(tpm_continue_self_test(dev), 100);
	430	TTPM_CHECK(tpm_self_test_full(dev), 1000);
	431	TTPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE), 100);
	432	TTPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
	433	100);
	434	TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
	435	100);
	436	TTPM_CHECK(tpm_extend(dev, 0, in, out), 200);
	437	TTPM_CHECK(tpm_set_global_lock(dev), 50);
	438	TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
e76cb927 SG	439	printf("done\n");
	440	return 0;
	441	}
	442
	443	#define TPM_MAX_NV_WRITES_NOOWNER 64
	444
abdc7b8a	445	static int test_write_limit(struct udevice *dev)
e76cb927	446	{
e76cb927	447	uint32_t result;
abdc7b8a	448	int i;
e76cb927	449
abdc7b8a SG	450	printf("Testing writelimit ...\n");
	451	tpm_init(dev);
	452	TPM_CHECK(TlclStartupIfNeeded(dev));
	453	TPM_CHECK(tpm_self_test_full(dev));
	454	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	455	TPM_CHECK(tpm_force_clear(dev));
	456	TPM_CHECK(tpm_physical_enable(dev));
	457	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
e76cb927 SG	458
	459	for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
	460	printf("\twriting %d\n", i);
abdc7b8a SG	461	result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i,
abdc7b8a SG	462	sizeof(i));
e76cb927 SG	463	switch (result) {
	464	case TPM_SUCCESS:
	465	break;
	466	case TPM_MAXNVWRITES:
	467	assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
	468	default:
9b643e31	469	pr_err("\tunexpected error code %d (0x%x)\n",
e76cb927 SG	470	result, result);
	471	}
	472	}
	473
	474	/* Reset write count */
abdc7b8a SG	475	TPM_CHECK(tpm_force_clear(dev));
	476	TPM_CHECK(tpm_physical_enable(dev));
	477	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
e76cb927 SG	478
e76cb927 SG	479	/* Try writing again. */
abdc7b8a	480	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i, sizeof(i)));
e76cb927 SG	481	printf("\tdone\n");
	482	return 0;
	483	}
	484
	485	#define VOIDTEST(XFUNC) \
	486	int do_test_##XFUNC(cmd_tbl_t *cmd_tbl, int flag, int argc, \
	487	char * const argv[]) \
	488	{ \
abdc7b8a SG	489	struct udevice *dev; \
	490	int ret; \
	491	\
	492	ret = get_tpm(&dev); \
	493	if (ret) \
	494	return ret; \
	495	return test_##XFUNC(dev); \
e76cb927 SG	496	}
	497
	498	#define VOIDENT(XNAME) \
	499	U_BOOT_CMD_MKENT(XNAME, 0, 1, do_test_##XNAME, "", ""),
	500
	501	VOIDTEST(early_extend)
	502	VOIDTEST(early_nvram)
	503	VOIDTEST(early_nvram2)
	504	VOIDTEST(enable)
	505	VOIDTEST(fast_enable)
	506	VOIDTEST(global_lock)
	507	VOIDTEST(lock)
	508	VOIDTEST(readonly)
	509	VOIDTEST(redefine_unowned)
	510	VOIDTEST(space_perm)
	511	VOIDTEST(startup)
	512	VOIDTEST(timing)
	513	VOIDTEST(write_limit)
	514	VOIDTEST(timer)
	515
	516	static cmd_tbl_t cmd_cros_tpm_sub[] = {
	517	VOIDENT(early_extend)
	518	VOIDENT(early_nvram)
	519	VOIDENT(early_nvram2)
	520	VOIDENT(enable)
	521	VOIDENT(fast_enable)
	522	VOIDENT(global_lock)
	523	VOIDENT(lock)
	524	VOIDENT(readonly)
	525	VOIDENT(redefine_unowned)
	526	VOIDENT(space_perm)
	527	VOIDENT(startup)
	528	VOIDENT(timing)
	529	VOIDENT(write_limit)
	530	VOIDENT(timer)
	531	};
	532
	533	static int do_tpmtest(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	534	{
	535	cmd_tbl_t *c;
0427b9c5	536	int i;
e76cb927 SG	537
e76cb927 SG	538	printf("argc = %d, argv = ", argc);
e76cb927	539
0427b9c5 SB	540	for (i = 0; i < argc; i++)
	541	printf(" %s", argv[i]);
	542
	543	printf("\n------\n");
	544
e76cb927 SG	545	argc--;
	546	argv++;
	547	c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,
	548	ARRAY_SIZE(cmd_cros_tpm_sub));
	549	return c ? c->cmd(cmdtp, flag, argc, argv) : cmd_usage(cmdtp);
	550	}
	551
	552	U_BOOT_CMD(tpmtest, 2, 1, do_tpmtest, "TPM tests",
	553	"\n\tearly_extend\n"
	554	"\tearly_nvram\n"
	555	"\tearly_nvram2\n"
	556	"\tenable\n"
	557	"\tfast_enable\n"
	558	"\tglobal_lock\n"
	559	"\tlock\n"
	560	"\treadonly\n"
	561	"\tredefine_unowned\n"
	562	"\tspace_perm\n"
	563	"\tstartup\n"
	564	"\ttiming\n"
	565	"\twrite_limit\n");