Merge branch 'net' of https://gitlab.denx.de/u-boot/custodians/u-boot-sh
[platform/kernel/u-boot.git] / include / tpm-v2.h
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_GET_RANDOM: TPM2_GetRandom().
74  * @TPM2_CC_PCR_READ: TPM2_PCR_Read().
75  * @TPM2_CC_PCR_EXTEND: TPM2_PCR_Extend().
76  * @TPM2_CC_PCR_SETAUTHVAL: TPM2_PCR_SetAuthValue().
77  */
78 enum tpm2_command_codes {
79         TPM2_CC_STARTUP         = 0x0144,
80         TPM2_CC_SELF_TEST       = 0x0143,
81         TPM2_CC_CLEAR           = 0x0126,
82         TPM2_CC_CLEARCONTROL    = 0x0127,
83         TPM2_CC_HIERCHANGEAUTH  = 0x0129,
84         TPM2_CC_PCR_SETAUTHPOL  = 0x012C,
85         TPM2_CC_DAM_RESET       = 0x0139,
86         TPM2_CC_DAM_PARAMETERS  = 0x013A,
87         TPM2_CC_NV_READ         = 0x014E,
88         TPM2_CC_GET_CAPABILITY  = 0x017A,
89         TPM2_CC_GET_RANDOM      = 0x017B,
90         TPM2_CC_PCR_READ        = 0x017E,
91         TPM2_CC_PCR_EXTEND      = 0x0182,
92         TPM2_CC_PCR_SETAUTHVAL  = 0x0183,
93 };
94
95 /**
96  * TPM2 return codes.
97  */
98 enum tpm2_return_codes {
99         TPM2_RC_SUCCESS         = 0x0000,
100         TPM2_RC_BAD_TAG         = 0x001E,
101         TPM2_RC_FMT1            = 0x0080,
102         TPM2_RC_HASH            = TPM2_RC_FMT1 + 0x0003,
103         TPM2_RC_VALUE           = TPM2_RC_FMT1 + 0x0004,
104         TPM2_RC_SIZE            = TPM2_RC_FMT1 + 0x0015,
105         TPM2_RC_BAD_AUTH        = TPM2_RC_FMT1 + 0x0022,
106         TPM2_RC_HANDLE          = TPM2_RC_FMT1 + 0x000B,
107         TPM2_RC_VER1            = 0x0100,
108         TPM2_RC_INITIALIZE      = TPM2_RC_VER1 + 0x0000,
109         TPM2_RC_FAILURE         = TPM2_RC_VER1 + 0x0001,
110         TPM2_RC_DISABLED        = TPM2_RC_VER1 + 0x0020,
111         TPM2_RC_AUTH_MISSING    = TPM2_RC_VER1 + 0x0025,
112         TPM2_RC_COMMAND_CODE    = TPM2_RC_VER1 + 0x0043,
113         TPM2_RC_AUTHSIZE        = TPM2_RC_VER1 + 0x0044,
114         TPM2_RC_AUTH_CONTEXT    = TPM2_RC_VER1 + 0x0045,
115         TPM2_RC_NEEDS_TEST      = TPM2_RC_VER1 + 0x0053,
116         TPM2_RC_WARN            = 0x0900,
117         TPM2_RC_TESTING         = TPM2_RC_WARN + 0x000A,
118         TPM2_RC_REFERENCE_H0    = TPM2_RC_WARN + 0x0010,
119         TPM2_RC_LOCKOUT         = TPM2_RC_WARN + 0x0021,
120 };
121
122 /**
123  * TPM2 algorithms.
124  */
125 enum tpm2_algorithms {
126         TPM2_ALG_XOR            = 0x0A,
127         TPM2_ALG_SHA256         = 0x0B,
128         TPM2_ALG_SHA384         = 0x0C,
129         TPM2_ALG_SHA512         = 0x0D,
130         TPM2_ALG_NULL           = 0x10,
131 };
132
133 /* NV index attributes */
134 enum tpm_index_attrs {
135         TPMA_NV_PPWRITE         = 1UL << 0,
136         TPMA_NV_OWNERWRITE      = 1UL << 1,
137         TPMA_NV_AUTHWRITE       = 1UL << 2,
138         TPMA_NV_POLICYWRITE     = 1UL << 3,
139         TPMA_NV_COUNTER         = 1UL << 4,
140         TPMA_NV_BITS            = 1UL << 5,
141         TPMA_NV_EXTEND          = 1UL << 6,
142         TPMA_NV_POLICY_DELETE   = 1UL << 10,
143         TPMA_NV_WRITELOCKED     = 1UL << 11,
144         TPMA_NV_WRITEALL        = 1UL << 12,
145         TPMA_NV_WRITEDEFINE     = 1UL << 13,
146         TPMA_NV_WRITE_STCLEAR   = 1UL << 14,
147         TPMA_NV_GLOBALLOCK      = 1UL << 15,
148         TPMA_NV_PPREAD          = 1UL << 16,
149         TPMA_NV_OWNERREAD       = 1UL << 17,
150         TPMA_NV_AUTHREAD        = 1UL << 18,
151         TPMA_NV_POLICYREAD      = 1UL << 19,
152         TPMA_NV_NO_DA           = 1UL << 25,
153         TPMA_NV_ORDERLY         = 1UL << 26,
154         TPMA_NV_CLEAR_STCLEAR   = 1UL << 27,
155         TPMA_NV_READLOCKED      = 1UL << 28,
156         TPMA_NV_WRITTEN         = 1UL << 29,
157         TPMA_NV_PLATFORMCREATE  = 1UL << 30,
158         TPMA_NV_READ_STCLEAR    = 1UL << 31,
159
160         TPMA_NV_MASK_READ       = TPMA_NV_PPREAD | TPMA_NV_OWNERREAD |
161                                 TPMA_NV_AUTHREAD | TPMA_NV_POLICYREAD,
162         TPMA_NV_MASK_WRITE      = TPMA_NV_PPWRITE | TPMA_NV_OWNERWRITE |
163                                         TPMA_NV_AUTHWRITE | TPMA_NV_POLICYWRITE,
164 };
165
166 enum {
167         TPM_ACCESS_VALID                = 1 << 7,
168         TPM_ACCESS_ACTIVE_LOCALITY      = 1 << 5,
169         TPM_ACCESS_REQUEST_PENDING      = 1 << 2,
170         TPM_ACCESS_REQUEST_USE          = 1 << 1,
171         TPM_ACCESS_ESTABLISHMENT        = 1 << 0,
172 };
173
174 enum {
175         TPM_STS_FAMILY_SHIFT            = 26,
176         TPM_STS_FAMILY_MASK             = 0x3 << TPM_STS_FAMILY_SHIFT,
177         TPM_STS_FAMILY_TPM2             = 1 << TPM_STS_FAMILY_SHIFT,
178         TPM_STS_RESE_TESTABLISMENT_BIT  = 1 << 25,
179         TPM_STS_COMMAND_CANCEL          = 1 << 24,
180         TPM_STS_BURST_COUNT_SHIFT       = 8,
181         TPM_STS_BURST_COUNT_MASK        = 0xffff << TPM_STS_BURST_COUNT_SHIFT,
182         TPM_STS_VALID                   = 1 << 7,
183         TPM_STS_COMMAND_READY           = 1 << 6,
184         TPM_STS_GO                      = 1 << 5,
185         TPM_STS_DATA_AVAIL              = 1 << 4,
186         TPM_STS_DATA_EXPECT             = 1 << 3,
187         TPM_STS_SELF_TEST_DONE          = 1 << 2,
188         TPM_STS_RESPONSE_RETRY          = 1 << 1,
189 };
190
191 enum {
192         TPM_CMD_COUNT_OFFSET    = 2,
193         TPM_CMD_ORDINAL_OFFSET  = 6,
194         TPM_MAX_BUF_SIZE        = 1260,
195 };
196
197 /**
198  * Issue a TPM2_Startup command.
199  *
200  * @dev         TPM device
201  * @mode        TPM startup mode
202  *
203  * @return code of the operation
204  */
205 u32 tpm2_startup(struct udevice *dev, enum tpm2_startup_types mode);
206
207 /**
208  * Issue a TPM2_SelfTest command.
209  *
210  * @dev         TPM device
211  * @full_test   Asking to perform all tests or only the untested ones
212  *
213  * @return code of the operation
214  */
215 u32 tpm2_self_test(struct udevice *dev, enum tpm2_yes_no full_test);
216
217 /**
218  * Issue a TPM2_Clear command.
219  *
220  * @dev         TPM device
221  * @handle      Handle
222  * @pw          Password
223  * @pw_sz       Length of the password
224  *
225  * @return code of the operation
226  */
227 u32 tpm2_clear(struct udevice *dev, u32 handle, const char *pw,
228                const ssize_t pw_sz);
229
230 /**
231  * Issue a TPM2_PCR_Extend command.
232  *
233  * @dev         TPM device
234  * @index       Index of the PCR
235  * @digest      Value representing the event to be recorded
236  *
237  * @return code of the operation
238  */
239 u32 tpm2_pcr_extend(struct udevice *dev, u32 index, const uint8_t *digest);
240
241 /**
242  * Issue a TPM2_PCR_Read command.
243  *
244  * @dev         TPM device
245  * @idx         Index of the PCR
246  * @idx_min_sz  Minimum size in bytes of the pcrSelect array
247  * @data        Output buffer for contents of the named PCR
248  * @updates     Optional out parameter: number of updates for this PCR
249  *
250  * @return code of the operation
251  */
252 u32 tpm2_pcr_read(struct udevice *dev, u32 idx, unsigned int idx_min_sz,
253                   void *data, unsigned int *updates);
254
255 /**
256  * Issue a TPM2_GetCapability command.  This implementation is limited
257  * to query property index that is 4-byte wide.
258  *
259  * @dev         TPM device
260  * @capability  Partition of capabilities
261  * @property    Further definition of capability, limited to be 4 bytes wide
262  * @buf         Output buffer for capability information
263  * @prop_count  Size of output buffer
264  *
265  * @return code of the operation
266  */
267 u32 tpm2_get_capability(struct udevice *dev, u32 capability, u32 property,
268                         void *buf, size_t prop_count);
269
270 /**
271  * Issue a TPM2_DictionaryAttackLockReset command.
272  *
273  * @dev         TPM device
274  * @pw          Password
275  * @pw_sz       Length of the password
276  *
277  * @return code of the operation
278  */
279 u32 tpm2_dam_reset(struct udevice *dev, const char *pw, const ssize_t pw_sz);
280
281 /**
282  * Issue a TPM2_DictionaryAttackParameters command.
283  *
284  * @dev         TPM device
285  * @pw          Password
286  * @pw_sz       Length of the password
287  * @max_tries   Count of authorizations before lockout
288  * @recovery_time Time before decrementation of the failure count
289  * @lockout_recovery Time to wait after a lockout
290  *
291  * @return code of the operation
292  */
293 u32 tpm2_dam_parameters(struct udevice *dev, const char *pw,
294                         const ssize_t pw_sz, unsigned int max_tries,
295                         unsigned int recovery_time,
296                         unsigned int lockout_recovery);
297
298 /**
299  * Issue a TPM2_HierarchyChangeAuth command.
300  *
301  * @dev         TPM device
302  * @handle      Handle
303  * @newpw       New password
304  * @newpw_sz    Length of the new password
305  * @oldpw       Old password
306  * @oldpw_sz    Length of the old password
307  *
308  * @return code of the operation
309  */
310 int tpm2_change_auth(struct udevice *dev, u32 handle, const char *newpw,
311                      const ssize_t newpw_sz, const char *oldpw,
312                      const ssize_t oldpw_sz);
313
314 /**
315  * Issue a TPM_PCR_SetAuthPolicy command.
316  *
317  * @dev         TPM device
318  * @pw          Platform password
319  * @pw_sz       Length of the password
320  * @index       Index of the PCR
321  * @digest      New key to access the PCR
322  *
323  * @return code of the operation
324  */
325 u32 tpm2_pcr_setauthpolicy(struct udevice *dev, const char *pw,
326                            const ssize_t pw_sz, u32 index, const char *key);
327
328 /**
329  * Issue a TPM_PCR_SetAuthValue command.
330  *
331  * @dev         TPM device
332  * @pw          Platform password
333  * @pw_sz       Length of the password
334  * @index       Index of the PCR
335  * @digest      New key to access the PCR
336  * @key_sz      Length of the new key
337  *
338  * @return code of the operation
339  */
340 u32 tpm2_pcr_setauthvalue(struct udevice *dev, const char *pw,
341                           const ssize_t pw_sz, u32 index, const char *key,
342                           const ssize_t key_sz);
343
344 /**
345  * Issue a TPM2_GetRandom command.
346  *
347  * @dev         TPM device
348  * @param data          output buffer for the random bytes
349  * @param count         size of output buffer
350  *
351  * @return return code of the operation
352  */
353 u32 tpm2_get_random(struct udevice *dev, void *data, u32 count);
354
355 #endif /* __TPM_V2_H */