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1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. | 1 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
2 * Use of this source code is governed by a BSD-style license that can be | 2 * Use of this source code is governed by a BSD-style license that can be |
3 * found in the LICENSE file. | 3 * found in the LICENSE file. |
4 */ | 4 */ |
5 | 5 |
6 /* TPM Lightweight Command Library. | 6 /* TPM Lightweight Command Library. |
7 * | 7 * |
8 * A low-level library for interfacing to TPM hardware or an emulator. | 8 * A low-level library for interfacing to TPM hardware or an emulator. |
9 */ | 9 */ |
10 | 10 |
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61 | 61 |
62 /* Sets the log level. 0 is quietest. | 62 /* Sets the log level. 0 is quietest. |
63 */ | 63 */ |
64 void TlclSetLogLevel(int level); | 64 void TlclSetLogLevel(int level); |
65 | 65 |
66 /* Sends a TPM_Startup(ST_CLEAR). Note that this is a no-op for the emulator, | 66 /* Sends a TPM_Startup(ST_CLEAR). Note that this is a no-op for the emulator, |
67 * because it runs this command during initialization. | 67 * because it runs this command during initialization. |
68 */ | 68 */ |
69 void TlclStartup(void); | 69 void TlclStartup(void); |
70 | 70 |
71 /* Run the self test. Note---this is synchronous. To run this in parallel | 71 /* Runs the self test. Note---this is synchronous. To run this in parallel |
72 * with other firmware, use ContinueSelfTest. | 72 * with other firmware, use ContinueSelfTest. |
73 */ | 73 */ |
74 void TlclSelftestfull(void); | 74 void TlclSelftestfull(void); |
75 | 75 |
| 76 /* Runs the self test in the background. |
| 77 */ |
| 78 void TlclContinueSelfTest(void); |
| 79 |
76 /* Defines a space with permission [perm]. [index] is the index for the space, | 80 /* Defines a space with permission [perm]. [index] is the index for the space, |
77 * [size] the usable data size. Errors are ignored. | 81 * [size] the usable data size. Errors are ignored. |
78 */ | 82 */ |
79 void TlclDefineSpace(uint32_t index, uint32_t perm, uint32_t size); | 83 void TlclDefineSpace(uint32_t index, uint32_t perm, uint32_t size); |
80 | 84 |
| 85 /* Defines a space with permission [perm]. [index] is the index for the space, |
| 86 * [size] the usable data size. Returns the TPM error code. |
| 87 */ |
| 88 uint32_t TlclDefineSpaceResult(uint32_t index, uint32_t perm, uint32_t size); |
| 89 |
81 /* Writes [length] bytes of [data] to space at [index]. The TPM error code is | 90 /* Writes [length] bytes of [data] to space at [index]. The TPM error code is |
82 * returned (0 for success). | 91 * returned (0 for success). |
83 */ | 92 */ |
84 uint32_t TlclWrite(uint32_t index, uint8_t *data, uint32_t length); | 93 uint32_t TlclWrite(uint32_t index, uint8_t *data, uint32_t length); |
85 | 94 |
86 /* Reads [length] bytes from space at [index] into [data]. The TPM error code | 95 /* Reads [length] bytes from space at [index] into [data]. The TPM error code |
87 * is returned (0 for success). | 96 * is returned (0 for success). |
88 */ | 97 */ |
89 uint32_t TlclRead(uint32_t index, uint8_t *data, uint32_t length); | 98 uint32_t TlclRead(uint32_t index, uint8_t *data, uint32_t length); |
90 | 99 |
91 /* Write-locks space at [index]. | 100 /* Write-locks space at [index]. |
92 */ | 101 */ |
93 void TlclWriteLock(uint32_t index); | 102 void TlclWriteLock(uint32_t index); |
94 | 103 |
95 /* Read-locks space at [index]. | 104 /* Read-locks space at [index]. |
96 */ | 105 */ |
97 void TlclReadLock(uint32_t index); | 106 void TlclReadLock(uint32_t index); |
98 | 107 |
99 /* Asserts physical presence in software. | 108 /* Asserts physical presence in software. |
100 */ | 109 */ |
101 void TlclAssertPhysicalPresence(void); | 110 void TlclAssertPhysicalPresence(void); |
102 | 111 |
| 112 /* Asserts physical presence in software. Return error code. |
| 113 */ |
| 114 uint32_t TlclAssertPhysicalPresenceResult(void); |
| 115 |
103 /* Turns off physical presence and locks it off until next reboot. | 116 /* Turns off physical presence and locks it off until next reboot. |
104 */ | 117 */ |
105 uint32_t TlclLockPhysicalPresence(void); | 118 uint32_t TlclLockPhysicalPresence(void); |
106 | 119 |
107 /* Sets the nvLocked bit. | 120 /* Sets the nvLocked bit. |
108 */ | 121 */ |
109 void TlclSetNvLocked(void); | 122 void TlclSetNvLocked(void); |
110 | 123 |
111 /* Returns 1 if the TPM is owned, 0 otherwise. | 124 /* Returns 1 if the TPM is owned, 0 otherwise. |
112 */ | 125 */ |
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125 int TlclSetDeactivated(uint8_t flag); | 138 int TlclSetDeactivated(uint8_t flag); |
126 | 139 |
127 /* Gets flags of interest. (Add more here as needed.) | 140 /* Gets flags of interest. (Add more here as needed.) |
128 */ | 141 */ |
129 int TlclGetFlags(uint8_t* disable, uint8_t* deactivated); | 142 int TlclGetFlags(uint8_t* disable, uint8_t* deactivated); |
130 | 143 |
131 /* Sets the bGlobalLock flag, which only a reboot can clear. | 144 /* Sets the bGlobalLock flag, which only a reboot can clear. |
132 */ | 145 */ |
133 uint32_t TlclSetGlobalLock(void); | 146 uint32_t TlclSetGlobalLock(void); |
134 | 147 |
| 148 /* Performs a TPM_Extend. |
| 149 */ |
| 150 uint32_t TlclExtend(int pcr_num, uint8_t* in_digest, uint8_t* out_digest); |
| 151 |
135 #endif /* TPM_LITE_TLCL_H_ */ | 152 #endif /* TPM_LITE_TLCL_H_ */ |
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