[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 <cpu_func.h>
#include <log.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(struct cmd_tbl *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 struct cmd_tbl 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(struct cmd_tbl *cmdtp, int flag, int argc,
		      char *const argv[])
{
	struct cmd_tbl *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>
9a3b4ceb	8	#include <cpu_func.h>
f7ae49fc	9	#include <log.h>
d677bfe2	10	#include <tpm-v1.h>
abdc7b8a	11	#include "tpm-user-utils.h"
e76cb927 SG	12
	13	/* Prints error and returns on failure */
	14	#define TPM_CHECK(tpm_command) do { \
	15	uint32_t result; \
	16	\
	17	result = (tpm_command); \
	18	if (result != TPM_SUCCESS) { \
	19	printf("TEST FAILED: line %d: " #tpm_command ": 0x%x\n", \
	20	__LINE__, result); \
	21	return result; \
	22	} \
	23	} while (0)
	24
	25	#define INDEX0 0xda70
	26	#define INDEX1 0xda71
	27	#define INDEX2 0xda72
	28	#define INDEX3 0xda73
	29	#define INDEX_INITIALISED 0xda80
	30	#define PHYS_PRESENCE 4
	31	#define PRESENCE 8
	32
abdc7b8a	33	static uint32_t TlclStartupIfNeeded(struct udevice *dev)
e76cb927	34	{
abdc7b8a	35	uint32_t result = tpm_startup(dev, TPM_ST_CLEAR);
e76cb927 SG	36
	37	return result == TPM_INVALID_POSTINIT ? TPM_SUCCESS : result;
	38	}
	39
abdc7b8a	40	static int test_timer(struct udevice *dev)
e76cb927 SG	41	{
	42	printf("get_timer(0) = %lu\n", get_timer(0));
	43	return 0;
	44	}
	45
abdc7b8a SG	46	static uint32_t tpm_get_flags(struct udevice dev, uint8_t disable,
abdc7b8a SG	47	uint8_t deactivated, uint8_t nvlocked)
e76cb927 SG	48	{
	49	struct tpm_permanent_flags pflags;
	50	uint32_t result;
	51
abdc7b8a	52	result = tpm_get_permanent_flags(dev, &pflags);
e76cb927 SG	53	if (result)
	54	return result;
	55	if (disable)
	56	*disable = pflags.disable;
	57	if (deactivated)
	58	*deactivated = pflags.deactivated;
	59	if (nvlocked)
	60	*nvlocked = pflags.nv_locked;
	61	debug("TPM: Got flags disable=%d, deactivated=%d, nvlocked=%d\n",
	62	pflags.disable, pflags.deactivated, pflags.nv_locked);
	63
	64	return 0;
	65	}
	66
abdc7b8a	67	static uint32_t tpm_nv_write_value_lock(struct udevice *dev, uint32_t index)
e76cb927 SG	68	{
	69	debug("TPM: Write lock 0x%x\n", index);
	70
abdc7b8a	71	return tpm_nv_write_value(dev, index, NULL, 0);
e76cb927 SG	72	}
e76cb927 SG	73
abdc7b8a	74	static int tpm_is_owned(struct udevice *dev)
e76cb927 SG	75	{
	76	uint8_t response[TPM_PUBEK_SIZE];
	77	uint32_t result;
	78
abdc7b8a	79	result = tpm_read_pubek(dev, response, sizeof(response));
e76cb927 SG	80
	81	return result != TPM_SUCCESS;
	82	}
	83
abdc7b8a	84	static int test_early_extend(struct udevice *dev)
e76cb927 SG	85	{
	86	uint8_t value_in[20];
	87	uint8_t value_out[20];
	88
	89	printf("Testing earlyextend ...");
abdc7b8a SG	90	tpm_init(dev);
	91	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	92	TPM_CHECK(tpm_continue_self_test(dev));
	93	TPM_CHECK(tpm_extend(dev, 1, value_in, value_out));
e76cb927 SG	94	printf("done\n");
	95	return 0;
	96	}
	97
abdc7b8a	98	static int test_early_nvram(struct udevice *dev)
e76cb927 SG	99	{
	100	uint32_t x;
	101
	102	printf("Testing earlynvram ...");
abdc7b8a SG	103	tpm_init(dev);
	104	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	105	TPM_CHECK(tpm_continue_self_test(dev));
	106	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	107	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	108	printf("done\n");
	109	return 0;
	110	}
	111
abdc7b8a	112	static int test_early_nvram2(struct udevice *dev)
e76cb927 SG	113	{
	114	uint32_t x;
	115
	116	printf("Testing earlynvram2 ...");
abdc7b8a SG	117	tpm_init(dev);
	118	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
	119	TPM_CHECK(tpm_continue_self_test(dev));
	120	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	121	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	122	printf("done\n");
	123	return 0;
	124	}
	125
abdc7b8a	126	static int test_enable(struct udevice *dev)
e76cb927 SG	127	{
	128	uint8_t disable = 0, deactivated = 0;
	129
	130	printf("Testing enable ...\n");
abdc7b8a SG	131	tpm_init(dev);
	132	TPM_CHECK(TlclStartupIfNeeded(dev));
	133	TPM_CHECK(tpm_self_test_full(dev));
	134	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	135	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927	136	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
abdc7b8a SG	137	TPM_CHECK(tpm_physical_enable(dev));
	138	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
	139	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	140	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
	141	if (disable == 1 \|\| deactivated == 1)
	142	printf("\tfailed to enable or activate\n");
	143	printf("\tdone\n");
	144	return 0;
	145	}
	146
	147	#define reboot() do { \
	148	printf("\trebooting...\n"); \
	149	reset_cpu(0); \
	150	} while (0)
	151
abdc7b8a	152	static int test_fast_enable(struct udevice *dev)
e76cb927 SG	153	{
	154	uint8_t disable = 0, deactivated = 0;
	155	int i;
	156
	157	printf("Testing fastenable ...\n");
abdc7b8a SG	158	tpm_init(dev);
	159	TPM_CHECK(TlclStartupIfNeeded(dev));
	160	TPM_CHECK(tpm_self_test_full(dev));
	161	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	162	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	163	printf("\tdisable is %d, deactivated is %d\n", disable, deactivated);
e76cb927 SG	164	for (i = 0; i < 2; i++) {
abdc7b8a SG	165	TPM_CHECK(tpm_force_clear(dev));
abdc7b8a SG	166	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	167	printf("\tdisable is %d, deactivated is %d\n", disable,
	168	deactivated);
	169	assert(disable == 1 && deactivated == 1);
abdc7b8a SG	170	TPM_CHECK(tpm_physical_enable(dev));
	171	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
	172	TPM_CHECK(tpm_get_flags(dev, &disable, &deactivated, NULL));
e76cb927 SG	173	printf("\tdisable is %d, deactivated is %d\n", disable,
	174	deactivated);
	175	assert(disable == 0 && deactivated == 0);
	176	}
	177	printf("\tdone\n");
	178	return 0;
	179	}
	180
abdc7b8a	181	static int test_global_lock(struct udevice *dev)
e76cb927 SG	182	{
	183	uint32_t zero = 0;
	184	uint32_t result;
	185	uint32_t x;
	186
	187	printf("Testing globallock ...\n");
abdc7b8a SG	188	tpm_init(dev);
	189	TPM_CHECK(TlclStartupIfNeeded(dev));
	190	TPM_CHECK(tpm_self_test_full(dev));
	191	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	192	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
	193	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero,
e76cb927	194	sizeof(uint32_t)));
abdc7b8a SG	195	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
abdc7b8a SG	196	TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero,
e76cb927	197	sizeof(uint32_t)));
abdc7b8a	198	TPM_CHECK(tpm_set_global_lock(dev));
e76cb927 SG	199	/* Verifies that write to index0 fails */
e76cb927 SG	200	x = 1;
abdc7b8a	201	result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x));
e76cb927	202	assert(result == TPM_AREA_LOCKED);
abdc7b8a	203	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	204	assert(x == 0);
	205	/* Verifies that write to index1 is still possible */
	206	x = 2;
abdc7b8a SG	207	TPM_CHECK(tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
abdc7b8a SG	208	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	209	assert(x == 2);
e76cb927 SG	210	/* Turns off PP */
abdc7b8a	211	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
e76cb927 SG	212	/* Verifies that write to index1 fails */
e76cb927 SG	213	x = 3;
abdc7b8a	214	result = tpm_nv_write_value(dev, INDEX1, (uint8_t *)&x, sizeof(x));
e76cb927	215	assert(result == TPM_BAD_PRESENCE);
abdc7b8a	216	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	217	assert(x == 2);
	218	printf("\tdone\n");
	219	return 0;
	220	}
	221
abdc7b8a	222	static int test_lock(struct udevice *dev)
e76cb927 SG	223	{
e76cb927 SG	224	printf("Testing lock ...\n");
abdc7b8a SG	225	tpm_init(dev);
	226	tpm_startup(dev, TPM_ST_CLEAR);
	227	tpm_self_test_full(dev);
	228	tpm_tsc_physical_presence(dev, PRESENCE);
	229	tpm_nv_write_value_lock(dev, INDEX0);
e76cb927 SG	230	printf("\tLocked 0x%x\n", INDEX0);
	231	printf("\tdone\n");
	232	return 0;
	233	}
	234
abdc7b8a	235	static void initialise_spaces(struct udevice *dev)
e76cb927 SG	236	{
	237	uint32_t zero = 0;
	238	uint32_t perm = TPM_NV_PER_WRITE_STCLEAR \| TPM_NV_PER_PPWRITE;
	239
	240	printf("\tInitialising spaces\n");
abdc7b8a SG	241	tpm_nv_set_locked(dev); /* useful only the first time */
	242	tpm_nv_define_space(dev, INDEX0, perm, 4);
	243	tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero, 4);
	244	tpm_nv_define_space(dev, INDEX1, perm, 4);
	245	tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero, 4);
	246	tpm_nv_define_space(dev, INDEX2, perm, 4);
	247	tpm_nv_write_value(dev, INDEX2, (uint8_t *)&zero, 4);
	248	tpm_nv_define_space(dev, INDEX3, perm, 4);
	249	tpm_nv_write_value(dev, INDEX3, (uint8_t *)&zero, 4);
e76cb927 SG	250	perm = TPM_NV_PER_READ_STCLEAR \| TPM_NV_PER_WRITE_STCLEAR \|
e76cb927 SG	251	TPM_NV_PER_PPWRITE;
abdc7b8a	252	tpm_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
e76cb927 SG	253	}
e76cb927 SG	254
abdc7b8a	255	static int test_readonly(struct udevice *dev)
e76cb927 SG	256	{
	257	uint8_t c;
	258	uint32_t index_0, index_1, index_2, index_3;
	259	int read0, read1, read2, read3;
	260
	261	printf("Testing readonly ...\n");
abdc7b8a SG	262	tpm_init(dev);
	263	tpm_startup(dev, TPM_ST_CLEAR);
	264	tpm_self_test_full(dev);
	265	tpm_tsc_physical_presence(dev, PRESENCE);
e76cb927 SG	266	/*
	267	* Checks if initialisation has completed by trying to read-lock a
	268	* space that's created at the end of initialisation
	269	*/
abdc7b8a	270	if (tpm_nv_read_value(dev, INDEX_INITIALISED, &c, 0) == TPM_BADINDEX) {
e76cb927	271	/* The initialisation did not complete */
abdc7b8a	272	initialise_spaces(dev);
e76cb927 SG	273	}
	274
	275	/* Checks if spaces are OK or messed up */
abdc7b8a SG	276	read0 = tpm_nv_read_value(dev, INDEX0, (uint8_t *)&index_0,
	277	sizeof(index_0));
	278	read1 = tpm_nv_read_value(dev, INDEX1, (uint8_t *)&index_1,
	279	sizeof(index_1));
	280	read2 = tpm_nv_read_value(dev, INDEX2, (uint8_t *)&index_2,
	281	sizeof(index_2));
	282	read3 = tpm_nv_read_value(dev, INDEX3, (uint8_t *)&index_3,
	283	sizeof(index_3));
e76cb927 SG	284	if (read0 \|\| read1 \|\| read2 \|\| read3) {
	285	printf("Invalid contents\n");
	286	return 0;
	287	}
	288
	289	/*
	290	* Writes space, and locks it. Then attempts to write again.
	291	* I really wish I could use the imperative.
	292	*/
	293	index_0 += 1;
abdc7b8a SG	294	if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
abdc7b8a SG	295	sizeof(index_0) !=
e76cb927	296	TPM_SUCCESS)) {
9b643e31	297	pr_err("\tcould not write index 0\n");
e76cb927	298	}
abdc7b8a SG	299	tpm_nv_write_value_lock(dev, INDEX0);
	300	if (tpm_nv_write_value(dev, INDEX0, (uint8_t *)&index_0,
	301	sizeof(index_0)) ==
e76cb927	302	TPM_SUCCESS)
9b643e31	303	pr_err("\tindex 0 is not locked\n");
e76cb927 SG	304
	305	printf("\tdone\n");
	306	return 0;
	307	}
	308
abdc7b8a	309	static int test_redefine_unowned(struct udevice *dev)
e76cb927 SG	310	{
	311	uint32_t perm;
	312	uint32_t result;
	313	uint32_t x;
	314
	315	printf("Testing redefine_unowned ...");
abdc7b8a SG	316	tpm_init(dev);
	317	TPM_CHECK(TlclStartupIfNeeded(dev));
	318	TPM_CHECK(tpm_self_test_full(dev));
	319	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	320	assert(!tpm_is_owned(dev));
e76cb927 SG	321
e76cb927 SG	322	/* Ensures spaces exist. */
abdc7b8a SG	323	TPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)));
abdc7b8a SG	324	TPM_CHECK(tpm_nv_read_value(dev, INDEX1, (uint8_t *)&x, sizeof(x)));
e76cb927 SG	325
	326	/* Redefines spaces a couple of times. */
	327	perm = TPM_NV_PER_PPWRITE \| TPM_NV_PER_GLOBALLOCK;
abdc7b8a SG	328	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, 2 * sizeof(uint32_t)));
abdc7b8a SG	329	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
e76cb927	330	perm = TPM_NV_PER_PPWRITE;
abdc7b8a SG	331	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
abdc7b8a SG	332	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
e76cb927 SG	333
e76cb927 SG	334	/* Sets the global lock */
abdc7b8a	335	tpm_set_global_lock(dev);
e76cb927 SG	336
e76cb927 SG	337	/* Verifies that index0 cannot be redefined */
abdc7b8a	338	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
e76cb927 SG	339	assert(result == TPM_AREA_LOCKED);
	340
	341	/* Checks that index1 can */
abdc7b8a SG	342	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
abdc7b8a SG	343	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
e76cb927 SG	344
e76cb927 SG	345	/* Turns off PP */
abdc7b8a	346	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
e76cb927 SG	347
e76cb927 SG	348	/* Verifies that neither index0 nor index1 can be redefined */
abdc7b8a	349	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
e76cb927	350	assert(result == TPM_BAD_PRESENCE);
abdc7b8a	351	result = tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
e76cb927 SG	352	assert(result == TPM_BAD_PRESENCE);
	353
	354	printf("done\n");
	355	return 0;
	356	}
	357
	358	#define PERMPPGL (TPM_NV_PER_PPWRITE \| TPM_NV_PER_GLOBALLOCK)
	359	#define PERMPP TPM_NV_PER_PPWRITE
	360
abdc7b8a	361	static int test_space_perm(struct udevice *dev)
e76cb927 SG	362	{
	363	uint32_t perm;
	364
	365	printf("Testing spaceperm ...");
abdc7b8a SG	366	tpm_init(dev);
	367	TPM_CHECK(TlclStartupIfNeeded(dev));
	368	TPM_CHECK(tpm_continue_self_test(dev));
	369	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	370	TPM_CHECK(tpm_get_permissions(dev, INDEX0, &perm));
e76cb927	371	assert((perm & PERMPPGL) == PERMPPGL);
abdc7b8a	372	TPM_CHECK(tpm_get_permissions(dev, INDEX1, &perm));
e76cb927 SG	373	assert((perm & PERMPP) == PERMPP);
	374	printf("done\n");
	375	return 0;
	376	}
	377
abdc7b8a	378	static int test_startup(struct udevice *dev)
e76cb927 SG	379	{
e76cb927 SG	380	uint32_t result;
abdc7b8a	381
e76cb927 SG	382	printf("Testing startup ...\n");
e76cb927 SG	383
abdc7b8a SG	384	tpm_init(dev);
abdc7b8a SG	385	result = tpm_startup(dev, TPM_ST_CLEAR);
e76cb927 SG	386	if (result != 0 && result != TPM_INVALID_POSTINIT)
e76cb927 SG	387	printf("\ttpm startup failed with 0x%x\n", result);
abdc7b8a	388	result = tpm_get_flags(dev, NULL, NULL, NULL);
e76cb927 SG	389	if (result != 0)
	390	printf("\ttpm getflags failed with 0x%x\n", result);
	391	printf("\texecuting SelfTestFull\n");
abdc7b8a SG	392	tpm_self_test_full(dev);
abdc7b8a SG	393	result = tpm_get_flags(dev, NULL, NULL, NULL);
e76cb927 SG	394	if (result != 0)
	395	printf("\ttpm getflags failed with 0x%x\n", result);
	396	printf("\tdone\n");
	397	return 0;
	398	}
	399
	400	/*
	401	* Runs [op] and ensures it returns success and doesn't run longer than
	402	* [time_limit] in milliseconds.
	403	*/
	404	#define TTPM_CHECK(op, time_limit) do { \
	405	ulong start, time; \
	406	uint32_t __result; \
	407	\
	408	start = get_timer(0); \
	409	__result = op; \
	410	if (__result != TPM_SUCCESS) { \
	411	printf("\t" #op ": error 0x%x\n", __result); \
	412	return -1; \
	413	} \
	414	time = get_timer(start); \
	415	printf("\t" #op ": %lu ms\n", time); \
	416	if (time > (ulong)time_limit) { \
	417	printf("\t" #op " exceeded " #time_limit " ms\n"); \
	418	} \
	419	} while (0)
	420
	421
abdc7b8a	422	static int test_timing(struct udevice *dev)
e76cb927	423	{
e76cb927	424	uint8_t in[20], out[20];
abdc7b8a	425	uint32_t x;
e76cb927 SG	426
e76cb927 SG	427	printf("Testing timing ...");
abdc7b8a SG	428	tpm_init(dev);
	429	TTPM_CHECK(TlclStartupIfNeeded(dev), 50);
	430	TTPM_CHECK(tpm_continue_self_test(dev), 100);
	431	TTPM_CHECK(tpm_self_test_full(dev), 1000);
	432	TTPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE), 100);
	433	TTPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
	434	100);
	435	TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
	436	100);
	437	TTPM_CHECK(tpm_extend(dev, 0, in, out), 200);
	438	TTPM_CHECK(tpm_set_global_lock(dev), 50);
	439	TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
e76cb927 SG	440	printf("done\n");
	441	return 0;
	442	}
	443
	444	#define TPM_MAX_NV_WRITES_NOOWNER 64
	445
abdc7b8a	446	static int test_write_limit(struct udevice *dev)
e76cb927	447	{
e76cb927	448	uint32_t result;
abdc7b8a	449	int i;
e76cb927	450
abdc7b8a SG	451	printf("Testing writelimit ...\n");
	452	tpm_init(dev);
	453	TPM_CHECK(TlclStartupIfNeeded(dev));
	454	TPM_CHECK(tpm_self_test_full(dev));
	455	TPM_CHECK(tpm_tsc_physical_presence(dev, PRESENCE));
	456	TPM_CHECK(tpm_force_clear(dev));
	457	TPM_CHECK(tpm_physical_enable(dev));
	458	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
e76cb927 SG	459
	460	for (i = 0; i < TPM_MAX_NV_WRITES_NOOWNER + 2; i++) {
	461	printf("\twriting %d\n", i);
abdc7b8a SG	462	result = tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i,
abdc7b8a SG	463	sizeof(i));
e76cb927 SG	464	switch (result) {
	465	case TPM_SUCCESS:
	466	break;
	467	case TPM_MAXNVWRITES:
	468	assert(i >= TPM_MAX_NV_WRITES_NOOWNER);
	469	default:
9b643e31	470	pr_err("\tunexpected error code %d (0x%x)\n",
e76cb927 SG	471	result, result);
	472	}
	473	}
	474
	475	/* Reset write count */
abdc7b8a SG	476	TPM_CHECK(tpm_force_clear(dev));
	477	TPM_CHECK(tpm_physical_enable(dev));
	478	TPM_CHECK(tpm_physical_set_deactivated(dev, 0));
e76cb927 SG	479
e76cb927 SG	480	/* Try writing again. */
abdc7b8a	481	TPM_CHECK(tpm_nv_write_value(dev, INDEX0, (uint8_t *)&i, sizeof(i)));
e76cb927 SG	482	printf("\tdone\n");
	483	return 0;
	484	}
	485
	486	#define VOIDTEST(XFUNC) \
09140113 SG	487	int do_test_##XFUNC(struct cmd_tbl *cmd_tbl, int flag, int argc, \
09140113 SG	488	char *const argv[]) \
e76cb927	489	{ \
abdc7b8a SG	490	struct udevice *dev; \
	491	int ret; \
	492	\
	493	ret = get_tpm(&dev); \
	494	if (ret) \
	495	return ret; \
	496	return test_##XFUNC(dev); \
e76cb927 SG	497	}
	498
	499	#define VOIDENT(XNAME) \
	500	U_BOOT_CMD_MKENT(XNAME, 0, 1, do_test_##XNAME, "", ""),
	501
	502	VOIDTEST(early_extend)
	503	VOIDTEST(early_nvram)
	504	VOIDTEST(early_nvram2)
	505	VOIDTEST(enable)
	506	VOIDTEST(fast_enable)
	507	VOIDTEST(global_lock)
	508	VOIDTEST(lock)
	509	VOIDTEST(readonly)
	510	VOIDTEST(redefine_unowned)
	511	VOIDTEST(space_perm)
	512	VOIDTEST(startup)
	513	VOIDTEST(timing)
	514	VOIDTEST(write_limit)
	515	VOIDTEST(timer)
	516
09140113	517	static struct cmd_tbl cmd_cros_tpm_sub[] = {
e76cb927 SG	518	VOIDENT(early_extend)
	519	VOIDENT(early_nvram)
	520	VOIDENT(early_nvram2)
	521	VOIDENT(enable)
	522	VOIDENT(fast_enable)
	523	VOIDENT(global_lock)
	524	VOIDENT(lock)
	525	VOIDENT(readonly)
	526	VOIDENT(redefine_unowned)
	527	VOIDENT(space_perm)
	528	VOIDENT(startup)
	529	VOIDENT(timing)
	530	VOIDENT(write_limit)
	531	VOIDENT(timer)
	532	};
	533
09140113 SG	534	static int do_tpmtest(struct cmd_tbl *cmdtp, int flag, int argc,
09140113 SG	535	char *const argv[])
e76cb927	536	{
09140113	537	struct cmd_tbl *c;
0427b9c5	538	int i;
e76cb927 SG	539
e76cb927 SG	540	printf("argc = %d, argv = ", argc);
e76cb927	541
0427b9c5 SB	542	for (i = 0; i < argc; i++)
	543	printf(" %s", argv[i]);
	544
	545	printf("\n------\n");
	546
e76cb927 SG	547	argc--;
	548	argv++;
	549	c = find_cmd_tbl(argv[0], cmd_cros_tpm_sub,
	550	ARRAY_SIZE(cmd_cros_tpm_sub));
	551	return c ? c->cmd(cmdtp, flag, argc, argv) : cmd_usage(cmdtp);
	552	}
	553
	554	U_BOOT_CMD(tpmtest, 2, 1, do_tpmtest, "TPM tests",
	555	"\n\tearly_extend\n"
	556	"\tearly_nvram\n"
	557	"\tearly_nvram2\n"
	558	"\tenable\n"
	559	"\tfast_enable\n"
	560	"\tglobal_lock\n"
	561	"\tlock\n"
	562	"\treadonly\n"
	563	"\tredefine_unowned\n"
	564	"\tspace_perm\n"
	565	"\tstartup\n"
	566	"\ttiming\n"
	567	"\twrite_limit\n");