xref: /openbmc/u-boot/include/tpm-v1.h (revision 0ed34aa7) 
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright (c) 2013 The Chromium OS Authors.
4  * Coypright (c) 2013 Guntermann & Drunck GmbH
5  */
6 
7 #ifndef __TPM_V1_H
8 #define __TPM_V1_H
9 
10 #include <tpm-common.h>
11 
12 /* Useful constants */
13 enum {
14 	TPM_REQUEST_HEADER_LENGTH	= 10,
15 	TPM_RESPONSE_HEADER_LENGTH	= 10,
16 	PCR_DIGEST_LENGTH		= 20,
17 	DIGEST_LENGTH			= 20,
18 	TPM_REQUEST_AUTH_LENGTH		= 45,
19 	TPM_RESPONSE_AUTH_LENGTH	= 41,
20 	/* some max lengths, valid for RSA keys <= 2048 bits */
21 	TPM_KEY12_MAX_LENGTH		= 618,
22 	TPM_PUBKEY_MAX_LENGTH		= 288,
23 };
24 
25 enum tpm_startup_type {
26 	TPM_ST_CLEAR		= 0x0001,
27 	TPM_ST_STATE		= 0x0002,
28 	TPM_ST_DEACTIVATED	= 0x0003,
29 };
30 
31 enum tpm_physical_presence {
32 	TPM_PHYSICAL_PRESENCE_HW_DISABLE	= 0x0200,
33 	TPM_PHYSICAL_PRESENCE_CMD_DISABLE	= 0x0100,
34 	TPM_PHYSICAL_PRESENCE_LIFETIME_LOCK	= 0x0080,
35 	TPM_PHYSICAL_PRESENCE_HW_ENABLE		= 0x0040,
36 	TPM_PHYSICAL_PRESENCE_CMD_ENABLE	= 0x0020,
37 	TPM_PHYSICAL_PRESENCE_NOTPRESENT	= 0x0010,
38 	TPM_PHYSICAL_PRESENCE_PRESENT		= 0x0008,
39 	TPM_PHYSICAL_PRESENCE_LOCK		= 0x0004,
40 };
41 
42 enum tpm_nv_index {
43 	TPM_NV_INDEX_LOCK	= 0xffffffff,
44 	TPM_NV_INDEX_0		= 0x00000000,
45 	TPM_NV_INDEX_DIR	= 0x10000001,
46 };
47 
48 enum tpm_resource_type {
49 	TPM_RT_KEY	= 0x00000001,
50 	TPM_RT_AUTH	= 0x00000002,
51 	TPM_RT_HASH	= 0x00000003,
52 	TPM_RT_TRANS	= 0x00000004,
53 	TPM_RT_CONTEXT	= 0x00000005,
54 	TPM_RT_COUNTER	= 0x00000006,
55 	TPM_RT_DELEGATE	= 0x00000007,
56 	TPM_RT_DAA_TPM	= 0x00000008,
57 	TPM_RT_DAA_V0	= 0x00000009,
58 	TPM_RT_DAA_V1	= 0x0000000A,
59 };
60 
61 enum tpm_capability_areas {
62 	TPM_CAP_ORD		= 0x00000001,
63 	TPM_CAP_ALG		= 0x00000002,
64 	TPM_CAP_PID		= 0x00000003,
65 	TPM_CAP_FLAG		= 0x00000004,
66 	TPM_CAP_PROPERTY	= 0x00000005,
67 	TPM_CAP_VERSION		= 0x00000006,
68 	TPM_CAP_KEY_HANDLE	= 0x00000007,
69 	TPM_CAP_CHECK_LOADED	= 0x00000008,
70 	TPM_CAP_SYM_MODE	= 0x00000009,
71 	TPM_CAP_KEY_STATUS	= 0x0000000C,
72 	TPM_CAP_NV_LIST		= 0x0000000D,
73 	TPM_CAP_MFR		= 0x00000010,
74 	TPM_CAP_NV_INDEX	= 0x00000011,
75 	TPM_CAP_TRANS_ALG	= 0x00000012,
76 	TPM_CAP_HANDLE		= 0x00000014,
77 	TPM_CAP_TRANS_ES	= 0x00000015,
78 	TPM_CAP_AUTH_ENCRYPT	= 0x00000017,
79 	TPM_CAP_SELECT_SIZE	= 0x00000018,
80 	TPM_CAP_DA_LOGIC	= 0x00000019,
81 	TPM_CAP_VERSION_VAL	= 0x0000001A,
82 };
83 
84 #define TPM_NV_PER_GLOBALLOCK		BIT(15)
85 #define TPM_NV_PER_PPREAD		BIT(16)
86 #define TPM_NV_PER_PPWRITE		BIT(0)
87 #define TPM_NV_PER_READ_STCLEAR		BIT(31)
88 #define TPM_NV_PER_WRITE_STCLEAR	BIT(14)
89 #define TPM_NV_PER_WRITEDEFINE		BIT(13)
90 #define TPM_NV_PER_WRITEALL		BIT(12)
91 
92 enum {
93 	TPM_PUBEK_SIZE			= 256,
94 };
95 
96 /**
97  * TPM return codes as defined in the TCG Main specification
98  * (TPM Main Part 2 Structures; Specification version 1.2)
99  */
100 enum tpm_return_code {
101 	TPM_BASE	= 0x00000000,
102 	TPM_NON_FATAL	= 0x00000800,
103 	TPM_SUCCESS	= TPM_BASE,
104 	/* TPM-defined fatal error codes */
105 	TPM_AUTHFAIL			= TPM_BASE +  1,
106 	TPM_BADINDEX			= TPM_BASE +  2,
107 	TPM_BAD_PARAMETER		= TPM_BASE +  3,
108 	TPM_AUDITFAILURE		= TPM_BASE +  4,
109 	TPM_CLEAR_DISABLED		= TPM_BASE +  5,
110 	TPM_DEACTIVATED			= TPM_BASE +  6,
111 	TPM_DISABLED			= TPM_BASE +  7,
112 	TPM_DISABLED_CMD		= TPM_BASE +  8,
113 	TPM_FAIL			= TPM_BASE +  9,
114 	TPM_BAD_ORDINAL			= TPM_BASE + 10,
115 	TPM_INSTALL_DISABLED		= TPM_BASE + 11,
116 	TPM_INVALID_KEYHANDLE		= TPM_BASE + 12,
117 	TPM_KEYNOTFOUND			= TPM_BASE + 13,
118 	TPM_INAPPROPRIATE_ENC		= TPM_BASE + 14,
119 	TPM_MIGRATE_FAIL		= TPM_BASE + 15,
120 	TPM_INVALID_PCR_INFO		= TPM_BASE + 16,
121 	TPM_NOSPACE			= TPM_BASE + 17,
122 	TPM_NOSRK			= TPM_BASE + 18,
123 	TPM_NOTSEALED_BLOB		= TPM_BASE + 19,
124 	TPM_OWNER_SET			= TPM_BASE + 20,
125 	TPM_RESOURCES			= TPM_BASE + 21,
126 	TPM_SHORTRANDOM			= TPM_BASE + 22,
127 	TPM_SIZE			= TPM_BASE + 23,
128 	TPM_WRONGPCRVAL			= TPM_BASE + 24,
129 	TPM_BAD_PARAM_SIZE		= TPM_BASE + 25,
130 	TPM_SHA_THREAD			= TPM_BASE + 26,
131 	TPM_SHA_ERROR			= TPM_BASE + 27,
132 	TPM_FAILEDSELFTEST		= TPM_BASE + 28,
133 	TPM_AUTH2FAIL			= TPM_BASE + 29,
134 	TPM_BADTAG			= TPM_BASE + 30,
135 	TPM_IOERROR			= TPM_BASE + 31,
136 	TPM_ENCRYPT_ERROR		= TPM_BASE + 32,
137 	TPM_DECRYPT_ERROR		= TPM_BASE + 33,
138 	TPM_INVALID_AUTHHANDLE		= TPM_BASE + 34,
139 	TPM_NO_ENDORSEMENT		= TPM_BASE + 35,
140 	TPM_INVALID_KEYUSAGE		= TPM_BASE + 36,
141 	TPM_WRONG_ENTITYTYPE		= TPM_BASE + 37,
142 	TPM_INVALID_POSTINIT		= TPM_BASE + 38,
143 	TPM_INAPPROPRIATE_SIG		= TPM_BASE + 39,
144 	TPM_BAD_KEY_PROPERTY		= TPM_BASE + 40,
145 	TPM_BAD_MIGRATION		= TPM_BASE + 41,
146 	TPM_BAD_SCHEME			= TPM_BASE + 42,
147 	TPM_BAD_DATASIZE		= TPM_BASE + 43,
148 	TPM_BAD_MODE			= TPM_BASE + 44,
149 	TPM_BAD_PRESENCE		= TPM_BASE + 45,
150 	TPM_BAD_VERSION			= TPM_BASE + 46,
151 	TPM_NO_WRAP_TRANSPORT		= TPM_BASE + 47,
152 	TPM_AUDITFAIL_UNSUCCESSFUL	= TPM_BASE + 48,
153 	TPM_AUDITFAIL_SUCCESSFUL	= TPM_BASE + 49,
154 	TPM_NOTRESETABLE		= TPM_BASE + 50,
155 	TPM_NOTLOCAL			= TPM_BASE + 51,
156 	TPM_BAD_TYPE			= TPM_BASE + 52,
157 	TPM_INVALID_RESOURCE		= TPM_BASE + 53,
158 	TPM_NOTFIPS			= TPM_BASE + 54,
159 	TPM_INVALID_FAMILY		= TPM_BASE + 55,
160 	TPM_NO_NV_PERMISSION		= TPM_BASE + 56,
161 	TPM_REQUIRES_SIGN		= TPM_BASE + 57,
162 	TPM_KEY_NOTSUPPORTED		= TPM_BASE + 58,
163 	TPM_AUTH_CONFLICT		= TPM_BASE + 59,
164 	TPM_AREA_LOCKED			= TPM_BASE + 60,
165 	TPM_BAD_LOCALITY		= TPM_BASE + 61,
166 	TPM_READ_ONLY			= TPM_BASE + 62,
167 	TPM_PER_NOWRITE			= TPM_BASE + 63,
168 	TPM_FAMILY_COUNT		= TPM_BASE + 64,
169 	TPM_WRITE_LOCKED		= TPM_BASE + 65,
170 	TPM_BAD_ATTRIBUTES		= TPM_BASE + 66,
171 	TPM_INVALID_STRUCTURE		= TPM_BASE + 67,
172 	TPM_KEY_OWNER_CONTROL		= TPM_BASE + 68,
173 	TPM_BAD_COUNTER			= TPM_BASE + 69,
174 	TPM_NOT_FULLWRITE		= TPM_BASE + 70,
175 	TPM_CONTEXT_GAP			= TPM_BASE + 71,
176 	TPM_MAXNVWRITES			= TPM_BASE + 72,
177 	TPM_NOOPERATOR			= TPM_BASE + 73,
178 	TPM_RESOURCEMISSING		= TPM_BASE + 74,
179 	TPM_DELEGATE_LOCK		= TPM_BASE + 75,
180 	TPM_DELEGATE_FAMILY		= TPM_BASE + 76,
181 	TPM_DELEGATE_ADMIN		= TPM_BASE + 77,
182 	TPM_TRANSPORT_NOTEXCLUSIVE	= TPM_BASE + 78,
183 	TPM_OWNER_CONTROL		= TPM_BASE + 79,
184 	TPM_DAA_RESOURCES		= TPM_BASE + 80,
185 	TPM_DAA_INPUT_DATA0		= TPM_BASE + 81,
186 	TPM_DAA_INPUT_DATA1		= TPM_BASE + 82,
187 	TPM_DAA_ISSUER_SETTINGS		= TPM_BASE + 83,
188 	TPM_DAA_TPM_SETTINGS		= TPM_BASE + 84,
189 	TPM_DAA_STAGE			= TPM_BASE + 85,
190 	TPM_DAA_ISSUER_VALIDITY		= TPM_BASE + 86,
191 	TPM_DAA_WRONG_W			= TPM_BASE + 87,
192 	TPM_BAD_HANDLE			= TPM_BASE + 88,
193 	TPM_BAD_DELEGATE		= TPM_BASE + 89,
194 	TPM_BADCONTEXT			= TPM_BASE + 90,
195 	TPM_TOOMANYCONTEXTS		= TPM_BASE + 91,
196 	TPM_MA_TICKET_SIGNATURE		= TPM_BASE + 92,
197 	TPM_MA_DESTINATION		= TPM_BASE + 93,
198 	TPM_MA_SOURCE			= TPM_BASE + 94,
199 	TPM_MA_AUTHORITY		= TPM_BASE + 95,
200 	TPM_PERMANENTEK			= TPM_BASE + 97,
201 	TPM_BAD_SIGNATURE		= TPM_BASE + 98,
202 	TPM_NOCONTEXTSPACE		= TPM_BASE + 99,
203 	/* TPM-defined non-fatal errors */
204 	TPM_RETRY		= TPM_BASE + TPM_NON_FATAL,
205 	TPM_NEEDS_SELFTEST	= TPM_BASE + TPM_NON_FATAL + 1,
206 	TPM_DOING_SELFTEST	= TPM_BASE + TPM_NON_FATAL + 2,
207 	TPM_DEFEND_LOCK_RUNNING	= TPM_BASE + TPM_NON_FATAL + 3,
208 };
209 
210 struct tpm_permanent_flags {
211 	__be16	tag;
212 	u8	disable;
213 	u8	ownership;
214 	u8	deactivated;
215 	u8	read_pubek;
216 	u8	disable_owner_clear;
217 	u8	allow_maintenance;
218 	u8	physical_presence_lifetime_lock;
219 	u8	physical_presence_hw_enable;
220 	u8	physical_presence_cmd_enable;
221 	u8	cekp_used;
222 	u8	tpm_post;
223 	u8	tpm_post_lock;
224 	u8	fips;
225 	u8	operator;
226 	u8	enable_revoke_ek;
227 	u8	nv_locked;
228 	u8	read_srk_pub;
229 	u8	tpm_established;
230 	u8	maintenance_done;
231 	u8	disable_full_da_logic_info;
232 } __packed;
233 
234 /**
235  * Issue a TPM_Startup command.
236  *
237  * @param mode		TPM startup mode
238  * @return return code of the operation
239  */
240 u32 tpm_startup(enum tpm_startup_type mode);
241 
242 /**
243  * Issue a TPM_SelfTestFull command.
244  *
245  * @return return code of the operation
246  */
247 u32 tpm_self_test_full(void);
248 
249 /**
250  * Issue a TPM_ContinueSelfTest command.
251  *
252  * @return return code of the operation
253  */
254 u32 tpm_continue_self_test(void);
255 
256 /**
257  * Issue a TPM_NV_DefineSpace command.  The implementation is limited
258  * to specify TPM_NV_ATTRIBUTES and size of the area.  The area index
259  * could be one of the special value listed in enum tpm_nv_index.
260  *
261  * @param index		index of the area
262  * @param perm		TPM_NV_ATTRIBUTES of the area
263  * @param size		size of the area
264  * @return return code of the operation
265  */
266 u32 tpm_nv_define_space(u32 index, u32 perm, u32 size);
267 
268 /**
269  * Issue a TPM_NV_ReadValue command.  This implementation is limited
270  * to read the area from offset 0.  The area index could be one of
271  * the special value listed in enum tpm_nv_index.
272  *
273  * @param index		index of the area
274  * @param data		output buffer of the area contents
275  * @param count		size of output buffer
276  * @return return code of the operation
277  */
278 u32 tpm_nv_read_value(u32 index, void *data, u32 count);
279 
280 /**
281  * Issue a TPM_NV_WriteValue command.  This implementation is limited
282  * to write the area from offset 0.  The area index could be one of
283  * the special value listed in enum tpm_nv_index.
284  *
285  * @param index		index of the area
286  * @param data		input buffer to be wrote to the area
287  * @param length	length of data bytes of input buffer
288  * @return return code of the operation
289  */
290 u32 tpm_nv_write_value(u32 index, const void *data, u32 length);
291 
292 /**
293  * Issue a TPM_Extend command.
294  *
295  * @param index		index of the PCR
296  * @param in_digest	160-bit value representing the event to be
297  *			recorded
298  * @param out_digest	160-bit PCR value after execution of the
299  *			command
300  * @return return code of the operation
301  */
302 u32 tpm_extend(u32 index, const void *in_digest, void *out_digest);
303 
304 /**
305  * Issue a TPM_PCRRead command.
306  *
307  * @param index		index of the PCR
308  * @param data		output buffer for contents of the named PCR
309  * @param count		size of output buffer
310  * @return return code of the operation
311  */
312 u32 tpm_pcr_read(u32 index, void *data, size_t count);
313 
314 /**
315  * Issue a TSC_PhysicalPresence command.  TPM physical presence flag
316  * is bit-wise OR'ed of flags listed in enum tpm_physical_presence.
317  *
318  * @param presence	TPM physical presence flag
319  * @return return code of the operation
320  */
321 u32 tpm_tsc_physical_presence(u16 presence);
322 
323 /**
324  * Issue a TPM_ReadPubek command.
325  *
326  * @param data		output buffer for the public endorsement key
327  * @param count		size of output buffer
328  * @return return code of the operation
329  */
330 u32 tpm_read_pubek(void *data, size_t count);
331 
332 /**
333  * Issue a TPM_ForceClear command.
334  *
335  * @return return code of the operation
336  */
337 u32 tpm_force_clear(void);
338 
339 /**
340  * Issue a TPM_PhysicalEnable command.
341  *
342  * @return return code of the operation
343  */
344 u32 tpm_physical_enable(void);
345 
346 /**
347  * Issue a TPM_PhysicalDisable command.
348  *
349  * @return return code of the operation
350  */
351 u32 tpm_physical_disable(void);
352 
353 /**
354  * Issue a TPM_PhysicalSetDeactivated command.
355  *
356  * @param state		boolean state of the deactivated flag
357  * @return return code of the operation
358  */
359 u32 tpm_physical_set_deactivated(u8 state);
360 
361 /**
362  * Issue a TPM_GetCapability command.  This implementation is limited
363  * to query sub_cap index that is 4-byte wide.
364  *
365  * @param cap_area	partition of capabilities
366  * @param sub_cap	further definition of capability, which is
367  *			limited to be 4-byte wide
368  * @param cap		output buffer for capability information
369  * @param count		size of output buffer
370  * @return return code of the operation
371  */
372 u32 tpm_get_capability(u32 cap_area, u32 sub_cap, void *cap, size_t count);
373 
374 /**
375  * Issue a TPM_FlushSpecific command for a AUTH resource.
376  *
377  * @param auth_handle	handle of the auth session
378  * @return return code of the operation
379  */
380 u32 tpm_terminate_auth_session(u32 auth_handle);
381 
382 /**
383  * Issue a TPM_OIAP command to setup an object independent authorization
384  * session.
385  * Information about the session is stored internally.
386  * If there was already an OIAP session active it is terminated and a new
387  * session is set up.
388  *
389  * @param auth_handle	pointer to the (new) auth handle or NULL.
390  * @return return code of the operation
391  */
392 u32 tpm_oiap(u32 *auth_handle);
393 
394 /**
395  * Ends an active OIAP session.
396  *
397  * @return return code of the operation
398  */
399 u32 tpm_end_oiap(void);
400 
401 /**
402  * Issue a TPM_LoadKey2 (Auth1) command using an OIAP session for authenticating
403  * the usage of the parent key.
404  *
405  * @param parent_handle	handle of the parent key.
406  * @param key		pointer to the key structure (TPM_KEY or TPM_KEY12).
407  * @param key_length	size of the key structure
408  * @param parent_key_usage_auth	usage auth for the parent key
409  * @param key_handle	pointer to the key handle
410  * @return return code of the operation
411  */
412 u32 tpm_load_key2_oiap(u32 parent_handle, const void *key, size_t key_length,
413 		       const void *parent_key_usage_auth, u32 *key_handle);
414 
415 /**
416  * Issue a TPM_GetPubKey (Auth1) command using an OIAP session for
417  * authenticating the usage of the key.
418  *
419  * @param key_handle	handle of the key
420  * @param usage_auth	usage auth for the key
421  * @param pubkey	pointer to the pub key buffer; may be NULL if the pubkey
422  *			should not be stored.
423  * @param pubkey_len	pointer to the pub key buffer len. On entry: the size of
424  *			the provided pubkey buffer. On successful exit: the size
425  *			of the stored TPM_PUBKEY structure (iff pubkey != NULL).
426  * @return return code of the operation
427  */
428 u32 tpm_get_pub_key_oiap(u32 key_handle, const void *usage_auth, void *pubkey,
429 			 size_t *pubkey_len);
430 
431 /**
432  * Get the TPM permanent flags value
433  *
434  * @param pflags	Place to put permanent flags
435  * @return return code of the operation
436  */
437 u32 tpm_get_permanent_flags(struct tpm_permanent_flags *pflags);
438 
439 /**
440  * Get the TPM permissions
441  *
442  * @param perm		Returns permissions value
443  * @return return code of the operation
444  */
445 u32 tpm_get_permissions(u32 index, u32 *perm);
446 
447 /**
448  * Flush a resource with a given handle and type from the TPM
449  *
450  * @param key_handle           handle of the resource
451  * @param resource_type                type of the resource
452  * @return return code of the operation
453  */
454 u32 tpm_flush_specific(u32 key_handle, u32 resource_type);
455 
456 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
457 /**
458  * Search for a key by usage AuthData and the hash of the parent's pub key.
459  *
460  * @param auth	        Usage auth of the key to search for
461  * @param pubkey_digest	SHA1 hash of the pub key structure of the key
462  * @param[out] handle	The handle of the key (Non-null iff found)
463  * @return 0 if key was found in TPM; != 0 if not.
464  */
465 u32 tpm_find_key_sha1(const u8 auth[20], const u8 pubkey_digest[20],
466 		      u32 *handle);
467 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
468 
469 /**
470  * Read random bytes from the TPM RNG. The implementation deals with the fact
471  * that the TPM may legally return fewer bytes than requested by retrying
472  * until @p count bytes have been received.
473  *
474  * @param data		output buffer for the random bytes
475  * @param count		size of output buffer
476  * @return return code of the operation
477  */
478 u32 tpm_get_random(void *data, u32 count);
479 
480 #endif /* __TPM_V1_H */
481