[J-u-boot.git] / include / tpm-v2.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (c) 2018 Bootlin
 * Author: Miquel Raynal <[email protected]>
 */

#ifndef __TPM_V2_H
#define __TPM_V2_H

#include <tpm-common.h>

#define TPM2_DIGEST_LEN		32

/**
 * TPM2 Structure Tags for command/response buffers.
 *
 * @TPM2_ST_NO_SESSIONS: the command does not need an authentication.
 * @TPM2_ST_SESSIONS: the command needs an authentication.
 */
enum tpm2_structures {
	TPM2_ST_NO_SESSIONS	= 0x8001,
	TPM2_ST_SESSIONS	= 0x8002,
};

/**
 * TPM2 type of boolean.
 */
enum tpm2_yes_no {
	TPMI_YES		= 1,
	TPMI_NO			= 0,
};

/**
 * TPM2 startup values.
 *
 * @TPM2_SU_CLEAR: reset the internal state.
 * @TPM2_SU_STATE: restore saved state (if any).
 */
enum tpm2_startup_types {
	TPM2_SU_CLEAR		= 0x0000,
	TPM2_SU_STATE		= 0x0001,
};

/**
 * TPM2 permanent handles.
 *
 * @TPM2_RH_OWNER: refers to the 'owner' hierarchy.
 * @TPM2_RS_PW: indicates a password.
 * @TPM2_RH_LOCKOUT: refers to the 'lockout' hierarchy.
 * @TPM2_RH_ENDORSEMENT: refers to the 'endorsement' hierarchy.
 * @TPM2_RH_PLATFORM: refers to the 'platform' hierarchy.
 */
enum tpm2_handles {
	TPM2_RH_OWNER		= 0x40000001,
	TPM2_RS_PW		= 0x40000009,
	TPM2_RH_LOCKOUT		= 0x4000000A,
	TPM2_RH_ENDORSEMENT	= 0x4000000B,
	TPM2_RH_PLATFORM	= 0x4000000C,
};

/**
 * TPM2 command codes used at the beginning of a buffer, gives the command.
 *
 * @TPM2_CC_STARTUP: TPM2_Startup().
 * @TPM2_CC_SELF_TEST: TPM2_SelfTest().
 * @TPM2_CC_CLEAR: TPM2_Clear().
 * @TPM2_CC_CLEARCONTROL: TPM2_ClearControl().
 * @TPM2_CC_HIERCHANGEAUTH: TPM2_HierarchyChangeAuth().
 * @TPM2_CC_PCR_SETAUTHPOL: TPM2_PCR_SetAuthPolicy().
 * @TPM2_CC_DAM_RESET: TPM2_DictionaryAttackLockReset().
 * @TPM2_CC_DAM_PARAMETERS: TPM2_DictionaryAttackParameters().
 * @TPM2_CC_GET_CAPABILITY: TPM2_GetCapibility().
 * @TPM2_CC_PCR_READ: TPM2_PCR_Read().
 * @TPM2_CC_PCR_EXTEND: TPM2_PCR_Extend().
 * @TPM2_CC_PCR_SETAUTHVAL: TPM2_PCR_SetAuthValue().
 */
enum tpm2_command_codes {
	TPM2_CC_STARTUP		= 0x0144,
	TPM2_CC_SELF_TEST	= 0x0143,
	TPM2_CC_CLEAR		= 0x0126,
	TPM2_CC_CLEARCONTROL	= 0x0127,
	TPM2_CC_HIERCHANGEAUTH	= 0x0129,
	TPM2_CC_PCR_SETAUTHPOL	= 0x012C,
	TPM2_CC_DAM_RESET	= 0x0139,
	TPM2_CC_DAM_PARAMETERS	= 0x013A,
	TPM2_CC_NV_READ         = 0x014E,
	TPM2_CC_GET_CAPABILITY	= 0x017A,
	TPM2_CC_PCR_READ	= 0x017E,
	TPM2_CC_PCR_EXTEND	= 0x0182,
	TPM2_CC_PCR_SETAUTHVAL	= 0x0183,
};

/**
 * TPM2 return codes.
 */
enum tpm2_return_codes {
	TPM2_RC_SUCCESS		= 0x0000,
	TPM2_RC_BAD_TAG		= 0x001E,
	TPM2_RC_FMT1		= 0x0080,
	TPM2_RC_HASH		= TPM2_RC_FMT1 + 0x0003,
	TPM2_RC_VALUE		= TPM2_RC_FMT1 + 0x0004,
	TPM2_RC_SIZE		= TPM2_RC_FMT1 + 0x0015,
	TPM2_RC_BAD_AUTH	= TPM2_RC_FMT1 + 0x0022,
	TPM2_RC_HANDLE		= TPM2_RC_FMT1 + 0x000B,
	TPM2_RC_VER1		= 0x0100,
	TPM2_RC_INITIALIZE	= TPM2_RC_VER1 + 0x0000,
	TPM2_RC_FAILURE		= TPM2_RC_VER1 + 0x0001,
	TPM2_RC_DISABLED	= TPM2_RC_VER1 + 0x0020,
	TPM2_RC_AUTH_MISSING	= TPM2_RC_VER1 + 0x0025,
	TPM2_RC_COMMAND_CODE	= TPM2_RC_VER1 + 0x0043,
	TPM2_RC_AUTHSIZE	= TPM2_RC_VER1 + 0x0044,
	TPM2_RC_AUTH_CONTEXT	= TPM2_RC_VER1 + 0x0045,
	TPM2_RC_NEEDS_TEST	= TPM2_RC_VER1 + 0x0053,
	TPM2_RC_WARN		= 0x0900,
	TPM2_RC_TESTING		= TPM2_RC_WARN + 0x000A,
	TPM2_RC_REFERENCE_H0	= TPM2_RC_WARN + 0x0010,
	TPM2_RC_LOCKOUT		= TPM2_RC_WARN + 0x0021,
};

/**
 * TPM2 algorithms.
 */
enum tpm2_algorithms {
	TPM2_ALG_XOR		= 0x0A,
	TPM2_ALG_SHA256		= 0x0B,
	TPM2_ALG_SHA384		= 0x0C,
	TPM2_ALG_SHA512		= 0x0D,
	TPM2_ALG_NULL		= 0x10,
};

/* NV index attributes */
enum tpm_index_attrs {
	TPMA_NV_PPWRITE		= 1UL << 0,
	TPMA_NV_OWNERWRITE	= 1UL << 1,
	TPMA_NV_AUTHWRITE	= 1UL << 2,
	TPMA_NV_POLICYWRITE	= 1UL << 3,
	TPMA_NV_COUNTER		= 1UL << 4,
	TPMA_NV_BITS		= 1UL << 5,
	TPMA_NV_EXTEND		= 1UL << 6,
	TPMA_NV_POLICY_DELETE	= 1UL << 10,
	TPMA_NV_WRITELOCKED	= 1UL << 11,
	TPMA_NV_WRITEALL	= 1UL << 12,
	TPMA_NV_WRITEDEFINE	= 1UL << 13,
	TPMA_NV_WRITE_STCLEAR	= 1UL << 14,
	TPMA_NV_GLOBALLOCK	= 1UL << 15,
	TPMA_NV_PPREAD		= 1UL << 16,
	TPMA_NV_OWNERREAD	= 1UL << 17,
	TPMA_NV_AUTHREAD	= 1UL << 18,
	TPMA_NV_POLICYREAD	= 1UL << 19,
	TPMA_NV_NO_DA		= 1UL << 25,
	TPMA_NV_ORDERLY		= 1UL << 26,
	TPMA_NV_CLEAR_STCLEAR	= 1UL << 27,
	TPMA_NV_READLOCKED	= 1UL << 28,
	TPMA_NV_WRITTEN		= 1UL << 29,
	TPMA_NV_PLATFORMCREATE	= 1UL << 30,
	TPMA_NV_READ_STCLEAR	= 1UL << 31,

	TPMA_NV_MASK_READ	= TPMA_NV_PPREAD | TPMA_NV_OWNERREAD |
				TPMA_NV_AUTHREAD | TPMA_NV_POLICYREAD,
	TPMA_NV_MASK_WRITE	= TPMA_NV_PPWRITE | TPMA_NV_OWNERWRITE |
					TPMA_NV_AUTHWRITE | TPMA_NV_POLICYWRITE,
};

/**
 * Issue a TPM2_Startup command.
 *
 * @dev		TPM device
 * @mode	TPM startup mode
 *
 * @return code of the operation
 */
u32 tpm2_startup(struct udevice *dev, enum tpm2_startup_types mode);

/**
 * Issue a TPM2_SelfTest command.
 *
 * @dev		TPM device
 * @full_test	Asking to perform all tests or only the untested ones
 *
 * @return code of the operation
 */
u32 tpm2_self_test(struct udevice *dev, enum tpm2_yes_no full_test);

/**
 * Issue a TPM2_Clear command.
 *
 * @dev		TPM device
 * @handle	Handle
 * @pw		Password
 * @pw_sz	Length of the password
 *
 * @return code of the operation
 */
u32 tpm2_clear(struct udevice *dev, u32 handle, const char *pw,
	       const ssize_t pw_sz);

/**
 * Issue a TPM2_PCR_Extend command.
 *
 * @dev		TPM device
 * @index	Index of the PCR
 * @digest	Value representing the event to be recorded
 *
 * @return code of the operation
 */
u32 tpm2_pcr_extend(struct udevice *dev, u32 index, const uint8_t *digest);

/**
 * Issue a TPM2_PCR_Read command.
 *
 * @dev		TPM device
 * @idx		Index of the PCR
 * @idx_min_sz	Minimum size in bytes of the pcrSelect array
 * @data	Output buffer for contents of the named PCR
 * @updates	Optional out parameter: number of updates for this PCR
 *
 * @return code of the operation
 */
u32 tpm2_pcr_read(struct udevice *dev, u32 idx, unsigned int idx_min_sz,
		  void *data, unsigned int *updates);

/**
 * Issue a TPM2_GetCapability command.  This implementation is limited
 * to query property index that is 4-byte wide.
 *
 * @dev		TPM device
 * @capability	Partition of capabilities
 * @property	Further definition of capability, limited to be 4 bytes wide
 * @buf		Output buffer for capability information
 * @prop_count	Size of output buffer
 *
 * @return code of the operation
 */
u32 tpm2_get_capability(struct udevice *dev, u32 capability, u32 property,
			void *buf, size_t prop_count);

/**
 * Issue a TPM2_DictionaryAttackLockReset command.
 *
 * @dev		TPM device
 * @pw		Password
 * @pw_sz	Length of the password
 *
 * @return code of the operation
 */
u32 tpm2_dam_reset(struct udevice *dev, const char *pw, const ssize_t pw_sz);

/**
 * Issue a TPM2_DictionaryAttackParameters command.
 *
 * @dev		TPM device
 * @pw		Password
 * @pw_sz	Length of the password
 * @max_tries	Count of authorizations before lockout
 * @recovery_time Time before decrementation of the failure count
 * @lockout_recovery Time to wait after a lockout
 *
 * @return code of the operation
 */
u32 tpm2_dam_parameters(struct udevice *dev, const char *pw,
			const ssize_t pw_sz, unsigned int max_tries,
			unsigned int recovery_time,
			unsigned int lockout_recovery);

/**
 * Issue a TPM2_HierarchyChangeAuth command.
 *
 * @dev		TPM device
 * @handle	Handle
 * @newpw	New password
 * @newpw_sz	Length of the new password
 * @oldpw	Old password
 * @oldpw_sz	Length of the old password
 *
 * @return code of the operation
 */
int tpm2_change_auth(struct udevice *dev, u32 handle, const char *newpw,
		     const ssize_t newpw_sz, const char *oldpw,
		     const ssize_t oldpw_sz);

/**
 * Issue a TPM_PCR_SetAuthPolicy command.
 *
 * @dev		TPM device
 * @pw		Platform password
 * @pw_sz	Length of the password
 * @index	Index of the PCR
 * @digest	New key to access the PCR
 *
 * @return code of the operation
 */
u32 tpm2_pcr_setauthpolicy(struct udevice *dev, const char *pw,
			   const ssize_t pw_sz, u32 index, const char *key);

/**
 * Issue a TPM_PCR_SetAuthValue command.
 *
 * @dev		TPM device
 * @pw		Platform password
 * @pw_sz	Length of the password
 * @index	Index of the PCR
 * @digest	New key to access the PCR
 * @key_sz	Length of the new key
 *
 * @return code of the operation
 */
u32 tpm2_pcr_setauthvalue(struct udevice *dev, const char *pw,
			  const ssize_t pw_sz, u32 index, const char *key,
			  const ssize_t key_sz);

#endif /* __TPM_V2_H */
Commit	Line	Data
ff32245b MR	1	/* SPDX-License-Identifier: GPL-2.0+ */
	2	/*
	3	* Copyright (c) 2018 Bootlin
	4	* Author: Miquel Raynal <[email protected]>
	5	*/
	6
	7	#ifndef __TPM_V2_H
	8	#define __TPM_V2_H
	9
	10	#include <tpm-common.h>
	11
	12	#define TPM2_DIGEST_LEN 32
	13
	14	/**
	15	* TPM2 Structure Tags for command/response buffers.
	16	*
	17	* @TPM2_ST_NO_SESSIONS: the command does not need an authentication.
	18	* @TPM2_ST_SESSIONS: the command needs an authentication.
	19	*/
	20	enum tpm2_structures {
	21	TPM2_ST_NO_SESSIONS = 0x8001,
	22	TPM2_ST_SESSIONS = 0x8002,
	23	};
	24
	25	/**
	26	* TPM2 type of boolean.
	27	*/
	28	enum tpm2_yes_no {
	29	TPMI_YES = 1,
	30	TPMI_NO = 0,
	31	};
	32
	33	/**
	34	* TPM2 startup values.
	35	*
	36	* @TPM2_SU_CLEAR: reset the internal state.
	37	* @TPM2_SU_STATE: restore saved state (if any).
	38	*/
	39	enum tpm2_startup_types {
	40	TPM2_SU_CLEAR = 0x0000,
	41	TPM2_SU_STATE = 0x0001,
	42	};
	43
	44	/**
	45	* TPM2 permanent handles.
	46	*
	47	* @TPM2_RH_OWNER: refers to the 'owner' hierarchy.
	48	* @TPM2_RS_PW: indicates a password.
	49	* @TPM2_RH_LOCKOUT: refers to the 'lockout' hierarchy.
	50	* @TPM2_RH_ENDORSEMENT: refers to the 'endorsement' hierarchy.
	51	* @TPM2_RH_PLATFORM: refers to the 'platform' hierarchy.
	52	*/
	53	enum tpm2_handles {
	54	TPM2_RH_OWNER = 0x40000001,
	55	TPM2_RS_PW = 0x40000009,
	56	TPM2_RH_LOCKOUT = 0x4000000A,
	57	TPM2_RH_ENDORSEMENT = 0x4000000B,
	58	TPM2_RH_PLATFORM = 0x4000000C,
	59	};
	60
	61	/**
	62	* TPM2 command codes used at the beginning of a buffer, gives the command.
	63	*
	64	* @TPM2_CC_STARTUP: TPM2_Startup().
65	* @TPM2_CC_SELF_TEST: TPM2_SelfTest().
66	* @TPM2_CC_CLEAR: TPM2_Clear().
67	* @TPM2_CC_CLEARCONTROL: TPM2_ClearControl().
68	* @TPM2_CC_HIERCHANGEAUTH: TPM2_HierarchyChangeAuth().
69	* @TPM2_CC_PCR_SETAUTHPOL: TPM2_PCR_SetAuthPolicy().
70	* @TPM2_CC_DAM_RESET: TPM2_DictionaryAttackLockReset().
71	* @TPM2_CC_DAM_PARAMETERS: TPM2_DictionaryAttackParameters().
72	* @TPM2_CC_GET_CAPABILITY: TPM2_GetCapibility().
73	* @TPM2_CC_PCR_READ: TPM2_PCR_Read().
74	* @TPM2_CC_PCR_EXTEND: TPM2_PCR_Extend().
75	* @TPM2_CC_PCR_SETAUTHVAL: TPM2_PCR_SetAuthValue().
76	*/
77	enum tpm2_command_codes {
78	TPM2_CC_STARTUP = 0x0144,
79	TPM2_CC_SELF_TEST = 0x0143,
80	TPM2_CC_CLEAR = 0x0126,
81	TPM2_CC_CLEARCONTROL = 0x0127,
82	TPM2_CC_HIERCHANGEAUTH = 0x0129,
b9dd4fab	83	TPM2_CC_PCR_SETAUTHPOL = 0x012C,
ff32245b MR	84	TPM2_CC_DAM_RESET = 0x0139,
ff32245b MR	85	TPM2_CC_DAM_PARAMETERS = 0x013A,
998af319	86	TPM2_CC_NV_READ = 0x014E,
ff32245b MR	87	TPM2_CC_GET_CAPABILITY = 0x017A,
	88	TPM2_CC_PCR_READ = 0x017E,
	89	TPM2_CC_PCR_EXTEND = 0x0182,
b9dd4fab	90	TPM2_CC_PCR_SETAUTHVAL = 0x0183,
ff32245b MR	91	};
	92
	93	/**
	94	* TPM2 return codes.
	95	*/
	96	enum tpm2_return_codes {
	97	TPM2_RC_SUCCESS = 0x0000,
	98	TPM2_RC_BAD_TAG = 0x001E,
	99	TPM2_RC_FMT1 = 0x0080,
	100	TPM2_RC_HASH = TPM2_RC_FMT1 + 0x0003,
	101	TPM2_RC_VALUE = TPM2_RC_FMT1 + 0x0004,
	102	TPM2_RC_SIZE = TPM2_RC_FMT1 + 0x0015,
	103	TPM2_RC_BAD_AUTH = TPM2_RC_FMT1 + 0x0022,
	104	TPM2_RC_HANDLE = TPM2_RC_FMT1 + 0x000B,
	105	TPM2_RC_VER1 = 0x0100,
	106	TPM2_RC_INITIALIZE = TPM2_RC_VER1 + 0x0000,
	107	TPM2_RC_FAILURE = TPM2_RC_VER1 + 0x0001,
	108	TPM2_RC_DISABLED = TPM2_RC_VER1 + 0x0020,
	109	TPM2_RC_AUTH_MISSING = TPM2_RC_VER1 + 0x0025,
	110	TPM2_RC_COMMAND_CODE = TPM2_RC_VER1 + 0x0043,
	111	TPM2_RC_AUTHSIZE = TPM2_RC_VER1 + 0x0044,
	112	TPM2_RC_AUTH_CONTEXT = TPM2_RC_VER1 + 0x0045,
	113	TPM2_RC_NEEDS_TEST = TPM2_RC_VER1 + 0x0053,
	114	TPM2_RC_WARN = 0x0900,
	115	TPM2_RC_TESTING = TPM2_RC_WARN + 0x000A,
	116	TPM2_RC_REFERENCE_H0 = TPM2_RC_WARN + 0x0010,
	117	TPM2_RC_LOCKOUT = TPM2_RC_WARN + 0x0021,
	118	};
	119
	120	/**
	121	* TPM2 algorithms.
	122	*/
	123	enum tpm2_algorithms {
	124	TPM2_ALG_XOR = 0x0A,
	125	TPM2_ALG_SHA256 = 0x0B,
	126	TPM2_ALG_SHA384 = 0x0C,
	127	TPM2_ALG_SHA512 = 0x0D,
	128	TPM2_ALG_NULL = 0x10,
	129	};
	130
be8a025e SG	131	/* NV index attributes */
	132	enum tpm_index_attrs {
	133	TPMA_NV_PPWRITE = 1UL << 0,
	134	TPMA_NV_OWNERWRITE = 1UL << 1,
	135	TPMA_NV_AUTHWRITE = 1UL << 2,
	136	TPMA_NV_POLICYWRITE = 1UL << 3,
	137	TPMA_NV_COUNTER = 1UL << 4,
	138	TPMA_NV_BITS = 1UL << 5,
	139	TPMA_NV_EXTEND = 1UL << 6,
	140	TPMA_NV_POLICY_DELETE = 1UL << 10,
	141	TPMA_NV_WRITELOCKED = 1UL << 11,
	142	TPMA_NV_WRITEALL = 1UL << 12,
	143	TPMA_NV_WRITEDEFINE = 1UL << 13,
	144	TPMA_NV_WRITE_STCLEAR = 1UL << 14,
	145	TPMA_NV_GLOBALLOCK = 1UL << 15,
	146	TPMA_NV_PPREAD = 1UL << 16,
	147	TPMA_NV_OWNERREAD = 1UL << 17,
	148	TPMA_NV_AUTHREAD = 1UL << 18,
	149	TPMA_NV_POLICYREAD = 1UL << 19,
	150	TPMA_NV_NO_DA = 1UL << 25,
	151	TPMA_NV_ORDERLY = 1UL << 26,
	152	TPMA_NV_CLEAR_STCLEAR = 1UL << 27,
	153	TPMA_NV_READLOCKED = 1UL << 28,
	154	TPMA_NV_WRITTEN = 1UL << 29,
	155	TPMA_NV_PLATFORMCREATE = 1UL << 30,
	156	TPMA_NV_READ_STCLEAR = 1UL << 31,
	157
	158	TPMA_NV_MASK_READ = TPMA_NV_PPREAD \| TPMA_NV_OWNERREAD \|
	159	TPMA_NV_AUTHREAD \| TPMA_NV_POLICYREAD,
	160	TPMA_NV_MASK_WRITE = TPMA_NV_PPWRITE \| TPMA_NV_OWNERWRITE \|
	161	TPMA_NV_AUTHWRITE \| TPMA_NV_POLICYWRITE,
	162	};
	163
1922df20 MR	164	/**
	165	* Issue a TPM2_Startup command.
	166	*
abdc7b8a	167	* @dev TPM device
1922df20 MR	168	* @mode TPM startup mode
	169	*
	170	* @return code of the operation
	171	*/
abdc7b8a	172	u32 tpm2_startup(struct udevice *dev, enum tpm2_startup_types mode);
1922df20	173
2dc6d97e MR	174	/**
	175	* Issue a TPM2_SelfTest command.
	176	*
abdc7b8a	177	* @dev TPM device
2dc6d97e MR	178	* @full_test Asking to perform all tests or only the untested ones
	179	*
	180	* @return code of the operation
	181	*/
abdc7b8a	182	u32 tpm2_self_test(struct udevice *dev, enum tpm2_yes_no full_test);
2dc6d97e	183
bad8ff56 MR	184	/**
	185	* Issue a TPM2_Clear command.
	186	*
abdc7b8a	187	* @dev TPM device
bad8ff56 MR	188	* @handle Handle
	189	* @pw Password
	190	* @pw_sz Length of the password
	191	*
	192	* @return code of the operation
	193	*/
abdc7b8a SG	194	u32 tpm2_clear(struct udevice dev, u32 handle, const char pw,
abdc7b8a SG	195	const ssize_t pw_sz);
bad8ff56	196
6284be5a MR	197	/**
	198	* Issue a TPM2_PCR_Extend command.
	199	*
abdc7b8a	200	* @dev TPM device
6284be5a MR	201	* @index Index of the PCR
	202	* @digest Value representing the event to be recorded
	203	*
	204	* @return code of the operation
	205	*/
abdc7b8a	206	u32 tpm2_pcr_extend(struct udevice dev, u32 index, const uint8_t digest);
6284be5a	207
1c4ea8f4 MR	208	/**
	209	* Issue a TPM2_PCR_Read command.
	210	*
abdc7b8a	211	* @dev TPM device
1c4ea8f4 MR	212	* @idx Index of the PCR
	213	* @idx_min_sz Minimum size in bytes of the pcrSelect array
	214	* @data Output buffer for contents of the named PCR
	215	* @updates Optional out parameter: number of updates for this PCR
	216	*
	217	* @return code of the operation
	218	*/
abdc7b8a SG	219	u32 tpm2_pcr_read(struct udevice *dev, u32 idx, unsigned int idx_min_sz,
abdc7b8a SG	220	void data, unsigned int updates);
1c4ea8f4	221
69cd8f06 MR	222	/**
	223	* Issue a TPM2_GetCapability command. This implementation is limited
	224	* to query property index that is 4-byte wide.
	225	*
abdc7b8a	226	* @dev TPM device
69cd8f06 MR	227	* @capability Partition of capabilities
	228	* @property Further definition of capability, limited to be 4 bytes wide
	229	* @buf Output buffer for capability information
	230	* @prop_count Size of output buffer
	231	*
	232	* @return code of the operation
	233	*/
abdc7b8a SG	234	u32 tpm2_get_capability(struct udevice *dev, u32 capability, u32 property,
abdc7b8a SG	235	void *buf, size_t prop_count);
69cd8f06	236
da9c3392 MR	237	/**
	238	* Issue a TPM2_DictionaryAttackLockReset command.
	239	*
abdc7b8a	240	* @dev TPM device
da9c3392 MR	241	* @pw Password
	242	* @pw_sz Length of the password
	243	*
	244	* @return code of the operation
	245	*/
abdc7b8a	246	u32 tpm2_dam_reset(struct udevice dev, const char pw, const ssize_t pw_sz);
da9c3392 MR	247
	248	/**
	249	* Issue a TPM2_DictionaryAttackParameters command.
	250	*
abdc7b8a	251	* @dev TPM device
da9c3392 MR	252	* @pw Password
	253	* @pw_sz Length of the password
	254	* @max_tries Count of authorizations before lockout
	255	* @recovery_time Time before decrementation of the failure count
	256	* @lockout_recovery Time to wait after a lockout
	257	*
	258	* @return code of the operation
	259	*/
abdc7b8a SG	260	u32 tpm2_dam_parameters(struct udevice dev, const char pw,
	261	const ssize_t pw_sz, unsigned int max_tries,
	262	unsigned int recovery_time,
da9c3392 MR	263	unsigned int lockout_recovery);
da9c3392 MR	264
dc26e913 MR	265	/**
	266	* Issue a TPM2_HierarchyChangeAuth command.
	267	*
abdc7b8a	268	* @dev TPM device
dc26e913 MR	269	* @handle Handle
	270	* @newpw New password
	271	* @newpw_sz Length of the new password
	272	* @oldpw Old password
	273	* @oldpw_sz Length of the old password
	274	*
	275	* @return code of the operation
	276	*/
abdc7b8a SG	277	int tpm2_change_auth(struct udevice dev, u32 handle, const char newpw,
	278	const ssize_t newpw_sz, const char *oldpw,
	279	const ssize_t oldpw_sz);
dc26e913	280
b9dd4fab MR	281	/**
	282	* Issue a TPM_PCR_SetAuthPolicy command.
	283	*
abdc7b8a	284	* @dev TPM device
b9dd4fab MR	285	* @pw Platform password
	286	* @pw_sz Length of the password
	287	* @index Index of the PCR
	288	* @digest New key to access the PCR
	289	*
	290	* @return code of the operation
	291	*/
abdc7b8a SG	292	u32 tpm2_pcr_setauthpolicy(struct udevice dev, const char pw,
abdc7b8a SG	293	const ssize_t pw_sz, u32 index, const char *key);
b9dd4fab MR	294
	295	/**
	296	* Issue a TPM_PCR_SetAuthValue command.
	297	*
abdc7b8a	298	* @dev TPM device
b9dd4fab MR	299	* @pw Platform password
	300	* @pw_sz Length of the password
	301	* @index Index of the PCR
	302	* @digest New key to access the PCR
	303	* @key_sz Length of the new key
	304	*
	305	* @return code of the operation
	306	*/
abdc7b8a SG	307	u32 tpm2_pcr_setauthvalue(struct udevice dev, const char pw,
	308	const ssize_t pw_sz, u32 index, const char *key,
	309	const ssize_t key_sz);
b9dd4fab	310
ff32245b	311	#endif /* __TPM_V2_H */