aboutsummaryrefslogtreecommitdiff
path: root/include/tpm-v2.h
blob: d53d2e402390ae84f4eab9e4ef6e42a1ee84a52a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
/* 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_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,
};

enum {
	TPM_ACCESS_VALID		= 1 << 7,
	TPM_ACCESS_ACTIVE_LOCALITY	= 1 << 5,
	TPM_ACCESS_REQUEST_PENDING	= 1 << 2,
	TPM_ACCESS_REQUEST_USE		= 1 << 1,
	TPM_ACCESS_ESTABLISHMENT	= 1 << 0,
};

enum {
	TPM_STS_FAMILY_SHIFT		= 26,
	TPM_STS_FAMILY_MASK		= 0x3 << TPM_STS_FAMILY_SHIFT,
	TPM_STS_FAMILY_TPM2		= 1 << TPM_STS_FAMILY_SHIFT,
	TPM_STS_RESE_TESTABLISMENT_BIT	= 1 << 25,
	TPM_STS_COMMAND_CANCEL		= 1 << 24,
	TPM_STS_BURST_COUNT_SHIFT	= 8,
	TPM_STS_BURST_COUNT_MASK	= 0xffff << TPM_STS_BURST_COUNT_SHIFT,
	TPM_STS_VALID			= 1 << 7,
	TPM_STS_COMMAND_READY		= 1 << 6,
	TPM_STS_GO			= 1 << 5,
	TPM_STS_DATA_AVAIL		= 1 << 4,
	TPM_STS_DATA_EXPECT		= 1 << 3,
	TPM_STS_SELF_TEST_DONE		= 1 << 2,
	TPM_STS_RESPONSE_RETRY		= 1 << 1,
};

enum {
	TPM_CMD_COUNT_OFFSET	= 2,
	TPM_CMD_ORDINAL_OFFSET	= 6,
	TPM_MAX_BUF_SIZE	= 1260,
};

/**
 * 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 */