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

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (c) 2018 Bootlin
 * Author: Miquel Raynal <miquel.raynal@bootlin.com>
 */

#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_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,
};

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

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

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

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

/**
 * Issue a TPM2_PCR_Read command.
 *
 * @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(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.
 *
 * @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(u32 capability, u32 property, void *buf,
			size_t prop_count);

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

/**
 * Issue a TPM2_DictionaryAttackParameters command.
 *
 * @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(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.
 *
 * @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(u32 handle, const char *newpw, const ssize_t newpw_sz,
		     const char *oldpw, const ssize_t oldpw_sz);

/**
 * Issue a TPM_PCR_SetAuthPolicy command.
 *
 * @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(const char *pw, const ssize_t pw_sz, u32 index,
			   const char *key);

/**
 * Issue a TPM_PCR_SetAuthValue command.
 *
 * @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(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 <miquel.raynal@bootlin.com>
	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,
	85	TPM2_CC_DAM_PARAMETERS = 0x013A,
	86	TPM2_CC_GET_CAPABILITY = 0x017A,
	87	TPM2_CC_PCR_READ = 0x017E,
	88	TPM2_CC_PCR_EXTEND = 0x0182,
b9dd4fab	89	TPM2_CC_PCR_SETAUTHVAL = 0x0183,
ff32245b MR	90	};
	91
	92	/**
	93	* TPM2 return codes.
	94	*/
	95	enum tpm2_return_codes {
	96	TPM2_RC_SUCCESS = 0x0000,
	97	TPM2_RC_BAD_TAG = 0x001E,
	98	TPM2_RC_FMT1 = 0x0080,
	99	TPM2_RC_HASH = TPM2_RC_FMT1 + 0x0003,
	100	TPM2_RC_VALUE = TPM2_RC_FMT1 + 0x0004,
	101	TPM2_RC_SIZE = TPM2_RC_FMT1 + 0x0015,
	102	TPM2_RC_BAD_AUTH = TPM2_RC_FMT1 + 0x0022,
	103	TPM2_RC_HANDLE = TPM2_RC_FMT1 + 0x000B,
	104	TPM2_RC_VER1 = 0x0100,
	105	TPM2_RC_INITIALIZE = TPM2_RC_VER1 + 0x0000,
	106	TPM2_RC_FAILURE = TPM2_RC_VER1 + 0x0001,
	107	TPM2_RC_DISABLED = TPM2_RC_VER1 + 0x0020,
	108	TPM2_RC_AUTH_MISSING = TPM2_RC_VER1 + 0x0025,
	109	TPM2_RC_COMMAND_CODE = TPM2_RC_VER1 + 0x0043,
	110	TPM2_RC_AUTHSIZE = TPM2_RC_VER1 + 0x0044,
	111	TPM2_RC_AUTH_CONTEXT = TPM2_RC_VER1 + 0x0045,
	112	TPM2_RC_NEEDS_TEST = TPM2_RC_VER1 + 0x0053,
	113	TPM2_RC_WARN = 0x0900,
	114	TPM2_RC_TESTING = TPM2_RC_WARN + 0x000A,
	115	TPM2_RC_REFERENCE_H0 = TPM2_RC_WARN + 0x0010,
	116	TPM2_RC_LOCKOUT = TPM2_RC_WARN + 0x0021,
	117	};
	118
	119	/**
	120	* TPM2 algorithms.
	121	*/
	122	enum tpm2_algorithms {
	123	TPM2_ALG_XOR = 0x0A,
	124	TPM2_ALG_SHA256 = 0x0B,
	125	TPM2_ALG_SHA384 = 0x0C,
	126	TPM2_ALG_SHA512 = 0x0D,
	127	TPM2_ALG_NULL = 0x10,
	128	};
	129
1922df20 MR	130	/**
	131	* Issue a TPM2_Startup command.
	132	*
	133	* @mode TPM startup mode
	134	*
	135	* @return code of the operation
	136	*/
	137	u32 tpm2_startup(enum tpm2_startup_types mode);
	138
2dc6d97e MR	139	/**
	140	* Issue a TPM2_SelfTest command.
	141	*
	142	* @full_test Asking to perform all tests or only the untested ones
	143	*
	144	* @return code of the operation
	145	*/
	146	u32 tpm2_self_test(enum tpm2_yes_no full_test);
	147
bad8ff56 MR	148	/**
	149	* Issue a TPM2_Clear command.
	150	*
	151	* @handle Handle
	152	* @pw Password
	153	* @pw_sz Length of the password
	154	*
	155	* @return code of the operation
	156	*/
	157	u32 tpm2_clear(u32 handle, const char *pw, const ssize_t pw_sz);
	158
6284be5a MR	159	/**
	160	* Issue a TPM2_PCR_Extend command.
	161	*
	162	* @index Index of the PCR
	163	* @digest Value representing the event to be recorded
	164	*
	165	* @return code of the operation
	166	*/
	167	u32 tpm2_pcr_extend(u32 index, const uint8_t *digest);
	168
1c4ea8f4 MR	169	/**
	170	* Issue a TPM2_PCR_Read command.
	171	*
	172	* @idx Index of the PCR
	173	* @idx_min_sz Minimum size in bytes of the pcrSelect array
	174	* @data Output buffer for contents of the named PCR
	175	* @updates Optional out parameter: number of updates for this PCR
	176	*
	177	* @return code of the operation
	178	*/
	179	u32 tpm2_pcr_read(u32 idx, unsigned int idx_min_sz, void *data,
	180	unsigned int *updates);
	181
69cd8f06 MR	182	/**
	183	* Issue a TPM2_GetCapability command. This implementation is limited
	184	* to query property index that is 4-byte wide.
	185	*
	186	* @capability Partition of capabilities
	187	* @property Further definition of capability, limited to be 4 bytes wide
	188	* @buf Output buffer for capability information
	189	* @prop_count Size of output buffer
	190	*
	191	* @return code of the operation
	192	*/
	193	u32 tpm2_get_capability(u32 capability, u32 property, void *buf,
	194	size_t prop_count);
	195
da9c3392 MR	196	/**
	197	* Issue a TPM2_DictionaryAttackLockReset command.
	198	*
	199	* @pw Password
	200	* @pw_sz Length of the password
	201	*
	202	* @return code of the operation
	203	*/
	204	u32 tpm2_dam_reset(const char *pw, const ssize_t pw_sz);
	205
	206	/**
	207	* Issue a TPM2_DictionaryAttackParameters command.
	208	*
	209	* @pw Password
	210	* @pw_sz Length of the password
	211	* @max_tries Count of authorizations before lockout
	212	* @recovery_time Time before decrementation of the failure count
	213	* @lockout_recovery Time to wait after a lockout
	214	*
	215	* @return code of the operation
	216	*/
	217	u32 tpm2_dam_parameters(const char *pw, const ssize_t pw_sz,
	218	unsigned int max_tries, unsigned int recovery_time,
	219	unsigned int lockout_recovery);
	220
dc26e913 MR	221	/**
	222	* Issue a TPM2_HierarchyChangeAuth command.
	223	*
	224	* @handle Handle
	225	* @newpw New password
	226	* @newpw_sz Length of the new password
	227	* @oldpw Old password
	228	* @oldpw_sz Length of the old password
	229	*
	230	* @return code of the operation
	231	*/
	232	int tpm2_change_auth(u32 handle, const char *newpw, const ssize_t newpw_sz,
	233	const char *oldpw, const ssize_t oldpw_sz);
	234
b9dd4fab MR	235	/**
	236	* Issue a TPM_PCR_SetAuthPolicy command.
	237	*
	238	* @pw Platform password
	239	* @pw_sz Length of the password
	240	* @index Index of the PCR
	241	* @digest New key to access the PCR
	242	*
	243	* @return code of the operation
	244	*/
	245	u32 tpm2_pcr_setauthpolicy(const char *pw, const ssize_t pw_sz, u32 index,
	246	const char *key);
	247
	248	/**
	249	* Issue a TPM_PCR_SetAuthValue command.
	250	*
	251	* @pw Platform password
	252	* @pw_sz Length of the password
	253	* @index Index of the PCR
	254	* @digest New key to access the PCR
	255	* @key_sz Length of the new key
	256	*
	257	* @return code of the operation
	258	*/
	259	u32 tpm2_pcr_setauthvalue(const char *pw, const ssize_t pw_sz, u32 index,
	260	const char *key, const ssize_t key_sz);
	261
ff32245b	262	#endif /* __TPM_V2_H */