forked from Minki/linux
tpm2: add new tpm2 commands according to TCG 1.36
1. TPM2_CC_LAST has moved from 182 to 193 2. Convert tpm2_ordinal_duration from an array into a switch statement, as there are not so many commands that require special duration relative to a number of commands, the switch statement function is called tpm2_ordinal_duration_index(). 3. Fix kdoc comments for tpm2_calc_ordinal_duration(). Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Tomas Winkler
Jarkko Sakkinen
parent
2ba5780ce3
commit
899102bc45
@ -134,22 +134,31 @@ enum tpm2_algorithms {
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};
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enum tpm2_command_codes {
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TPM2_CC_FIRST = 0x011F,
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TPM2_CC_CREATE_PRIMARY = 0x0131,
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TPM2_CC_SELF_TEST = 0x0143,
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TPM2_CC_STARTUP = 0x0144,
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TPM2_CC_SHUTDOWN = 0x0145,
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TPM2_CC_CREATE = 0x0153,
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TPM2_CC_LOAD = 0x0157,
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TPM2_CC_UNSEAL = 0x015E,
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TPM2_CC_CONTEXT_LOAD = 0x0161,
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TPM2_CC_CONTEXT_SAVE = 0x0162,
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TPM2_CC_FLUSH_CONTEXT = 0x0165,
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TPM2_CC_GET_CAPABILITY = 0x017A,
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TPM2_CC_GET_RANDOM = 0x017B,
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TPM2_CC_PCR_READ = 0x017E,
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TPM2_CC_PCR_EXTEND = 0x0182,
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TPM2_CC_LAST = 0x018F,
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TPM2_CC_FIRST = 0x011F,
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TPM2_CC_HIERARCHY_CONTROL = 0x0121,
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TPM2_CC_HIERARCHY_CHANGE_AUTH = 0x0129,
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TPM2_CC_CREATE_PRIMARY = 0x0131,
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TPM2_CC_SEQUENCE_COMPLETE = 0x013E,
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TPM2_CC_SELF_TEST = 0x0143,
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TPM2_CC_STARTUP = 0x0144,
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TPM2_CC_SHUTDOWN = 0x0145,
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TPM2_CC_NV_READ = 0x014E,
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TPM2_CC_CREATE = 0x0153,
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TPM2_CC_LOAD = 0x0157,
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TPM2_CC_SEQUENCE_UPDATE = 0x015C,
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TPM2_CC_UNSEAL = 0x015E,
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TPM2_CC_CONTEXT_LOAD = 0x0161,
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TPM2_CC_CONTEXT_SAVE = 0x0162,
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TPM2_CC_FLUSH_CONTEXT = 0x0165,
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TPM2_CC_VERIFY_SIGNATURE = 0x0177,
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TPM2_CC_GET_CAPABILITY = 0x017A,
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TPM2_CC_GET_RANDOM = 0x017B,
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TPM2_CC_PCR_READ = 0x017E,
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TPM2_CC_PCR_EXTEND = 0x0182,
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TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185,
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TPM2_CC_HASH_SEQUENCE_START = 0x0186,
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TPM2_CC_CREATE_LOADED = 0x0191,
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TPM2_CC_LAST = 0x0193, /* Spec 1.36 */
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};
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enum tpm2_permanent_handles {
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@ -40,129 +40,100 @@ static struct tpm2_hash tpm2_hash_map[] = {
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{HASH_ALGO_SM3_256, TPM2_ALG_SM3_256},
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};
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/*
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* Array with one entry per ordinal defining the maximum amount
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* of time the chip could take to return the result. The values
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* of the SHORT, MEDIUM, and LONG durations are taken from the
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* PC Client Profile (PTP) specification.
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* LONG_LONG is for commands that generates keys which empirically
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* takes longer time on some systems.
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/**
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* tpm2_ordinal_duration_index() - returns an index to the chip duration table
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* @ordinal: TPM command ordinal.
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*
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* The function returns an index to the chip duration table
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* (enum tpm_duration), that describes the maximum amount of
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* time the chip could take to return the result for a particular ordinal.
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*
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* The values of the MEDIUM, and LONG durations are taken
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* from the PC Client Profile (PTP) specification (750, 2000 msec)
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*
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* LONG_LONG is for commands that generates keys which empirically takes
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* a longer time on some systems.
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*
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* Return:
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* * TPM_MEDIUM
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* * TPM_LONG
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* * TPM_LONG_LONG
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* * TPM_UNDEFINED
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*/
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static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = {
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TPM_UNDEFINED, /* 11F */
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TPM_UNDEFINED, /* 120 */
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TPM_LONG, /* 121 */
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TPM_UNDEFINED, /* 122 */
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TPM_UNDEFINED, /* 123 */
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TPM_UNDEFINED, /* 124 */
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TPM_UNDEFINED, /* 125 */
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TPM_UNDEFINED, /* 126 */
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TPM_UNDEFINED, /* 127 */
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TPM_UNDEFINED, /* 128 */
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TPM_LONG, /* 129 */
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TPM_UNDEFINED, /* 12a */
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TPM_UNDEFINED, /* 12b */
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TPM_UNDEFINED, /* 12c */
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TPM_UNDEFINED, /* 12d */
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TPM_UNDEFINED, /* 12e */
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TPM_UNDEFINED, /* 12f */
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TPM_UNDEFINED, /* 130 */
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TPM_LONG_LONG, /* 131 */
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TPM_UNDEFINED, /* 132 */
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TPM_UNDEFINED, /* 133 */
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TPM_UNDEFINED, /* 134 */
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TPM_UNDEFINED, /* 135 */
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TPM_UNDEFINED, /* 136 */
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TPM_UNDEFINED, /* 137 */
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TPM_UNDEFINED, /* 138 */
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TPM_UNDEFINED, /* 139 */
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TPM_UNDEFINED, /* 13a */
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TPM_UNDEFINED, /* 13b */
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TPM_UNDEFINED, /* 13c */
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TPM_UNDEFINED, /* 13d */
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TPM_MEDIUM, /* 13e */
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TPM_UNDEFINED, /* 13f */
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TPM_UNDEFINED, /* 140 */
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TPM_UNDEFINED, /* 141 */
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TPM_UNDEFINED, /* 142 */
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TPM_LONG, /* 143 */
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TPM_MEDIUM, /* 144 */
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TPM_UNDEFINED, /* 145 */
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TPM_UNDEFINED, /* 146 */
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TPM_UNDEFINED, /* 147 */
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TPM_UNDEFINED, /* 148 */
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TPM_UNDEFINED, /* 149 */
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TPM_UNDEFINED, /* 14a */
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TPM_UNDEFINED, /* 14b */
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TPM_UNDEFINED, /* 14c */
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TPM_UNDEFINED, /* 14d */
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TPM_LONG, /* 14e */
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TPM_UNDEFINED, /* 14f */
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TPM_UNDEFINED, /* 150 */
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TPM_UNDEFINED, /* 151 */
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TPM_UNDEFINED, /* 152 */
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TPM_LONG_LONG, /* 153 */
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TPM_UNDEFINED, /* 154 */
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TPM_UNDEFINED, /* 155 */
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TPM_UNDEFINED, /* 156 */
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TPM_UNDEFINED, /* 157 */
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TPM_UNDEFINED, /* 158 */
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TPM_UNDEFINED, /* 159 */
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TPM_UNDEFINED, /* 15a */
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TPM_UNDEFINED, /* 15b */
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TPM_MEDIUM, /* 15c */
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TPM_UNDEFINED, /* 15d */
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TPM_UNDEFINED, /* 15e */
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TPM_UNDEFINED, /* 15f */
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TPM_UNDEFINED, /* 160 */
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TPM_UNDEFINED, /* 161 */
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TPM_UNDEFINED, /* 162 */
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TPM_UNDEFINED, /* 163 */
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TPM_UNDEFINED, /* 164 */
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TPM_UNDEFINED, /* 165 */
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TPM_UNDEFINED, /* 166 */
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TPM_UNDEFINED, /* 167 */
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TPM_UNDEFINED, /* 168 */
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TPM_UNDEFINED, /* 169 */
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TPM_UNDEFINED, /* 16a */
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TPM_UNDEFINED, /* 16b */
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TPM_UNDEFINED, /* 16c */
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TPM_UNDEFINED, /* 16d */
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TPM_UNDEFINED, /* 16e */
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TPM_UNDEFINED, /* 16f */
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TPM_UNDEFINED, /* 170 */
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TPM_UNDEFINED, /* 171 */
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TPM_UNDEFINED, /* 172 */
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TPM_UNDEFINED, /* 173 */
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TPM_UNDEFINED, /* 174 */
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TPM_UNDEFINED, /* 175 */
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TPM_UNDEFINED, /* 176 */
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TPM_LONG, /* 177 */
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TPM_UNDEFINED, /* 178 */
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TPM_UNDEFINED, /* 179 */
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TPM_MEDIUM, /* 17a */
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TPM_LONG, /* 17b */
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TPM_UNDEFINED, /* 17c */
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TPM_UNDEFINED, /* 17d */
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TPM_UNDEFINED, /* 17e */
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TPM_UNDEFINED, /* 17f */
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TPM_UNDEFINED, /* 180 */
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TPM_UNDEFINED, /* 181 */
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TPM_MEDIUM, /* 182 */
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TPM_UNDEFINED, /* 183 */
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TPM_UNDEFINED, /* 184 */
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TPM_MEDIUM, /* 185 */
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TPM_MEDIUM, /* 186 */
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TPM_UNDEFINED, /* 187 */
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TPM_UNDEFINED, /* 188 */
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TPM_UNDEFINED, /* 189 */
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TPM_UNDEFINED, /* 18a */
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TPM_UNDEFINED, /* 18b */
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TPM_UNDEFINED, /* 18c */
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TPM_UNDEFINED, /* 18d */
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TPM_UNDEFINED, /* 18e */
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TPM_UNDEFINED /* 18f */
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};
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static u8 tpm2_ordinal_duration_index(u32 ordinal)
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{
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switch (ordinal) {
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/* Startup */
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case TPM2_CC_STARTUP: /* 144 */
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return TPM_MEDIUM;
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case TPM2_CC_SELF_TEST: /* 143 */
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return TPM_LONG;
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case TPM2_CC_GET_RANDOM: /* 17B */
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return TPM_LONG;
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case TPM2_CC_SEQUENCE_UPDATE: /* 15C */
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return TPM_MEDIUM;
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case TPM2_CC_SEQUENCE_COMPLETE: /* 13E */
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return TPM_MEDIUM;
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case TPM2_CC_EVENT_SEQUENCE_COMPLETE: /* 185 */
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return TPM_MEDIUM;
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case TPM2_CC_HASH_SEQUENCE_START: /* 186 */
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return TPM_MEDIUM;
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case TPM2_CC_VERIFY_SIGNATURE: /* 177 */
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return TPM_LONG;
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case TPM2_CC_PCR_EXTEND: /* 182 */
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return TPM_MEDIUM;
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case TPM2_CC_HIERARCHY_CONTROL: /* 121 */
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return TPM_LONG;
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case TPM2_CC_HIERARCHY_CHANGE_AUTH: /* 129 */
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return TPM_LONG;
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case TPM2_CC_GET_CAPABILITY: /* 17A */
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return TPM_MEDIUM;
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case TPM2_CC_NV_READ: /* 14E */
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return TPM_LONG;
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case TPM2_CC_CREATE_PRIMARY: /* 131 */
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return TPM_LONG_LONG;
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case TPM2_CC_CREATE: /* 153 */
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return TPM_LONG_LONG;
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case TPM2_CC_CREATE_LOADED: /* 191 */
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return TPM_LONG_LONG;
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default:
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return TPM_UNDEFINED;
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}
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}
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/**
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* tpm2_calc_ordinal_duration() - calculate the maximum command duration
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* @chip: TPM chip to use.
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* @ordinal: TPM command ordinal.
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*
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* The function returns the maximum amount of time the chip could take
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* to return the result for a particular ordinal in jiffies.
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*
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* Return: A maximal duration time for an ordinal in jiffies.
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*/
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unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
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{
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unsigned int index;
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index = tpm2_ordinal_duration_index(ordinal);
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if (index != TPM_UNDEFINED)
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return chip->duration[index];
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else
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return msecs_to_jiffies(TPM2_DURATION_DEFAULT);
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}
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EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration);
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struct tpm2_pcr_read_out {
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__be32 update_cnt;
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@ -748,32 +719,6 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type)
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tpm_buf_destroy(&buf);
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}
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/*
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* tpm2_calc_ordinal_duration() - maximum duration for a command
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*
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* @chip: TPM chip to use.
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* @ordinal: command code number.
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*
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* Return: maximum duration for a command
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*/
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unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal)
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{
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int index = TPM_UNDEFINED;
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int duration = 0;
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if (ordinal >= TPM2_CC_FIRST && ordinal <= TPM2_CC_LAST)
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index = tpm2_ordinal_duration[ordinal - TPM2_CC_FIRST];
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if (index != TPM_UNDEFINED)
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duration = chip->duration[index];
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if (duration <= 0)
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duration = msecs_to_jiffies(TPM2_DURATION_DEFAULT);
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return duration;
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}
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EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration);
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/**
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* tpm2_do_selftest() - ensure that all self tests have passed
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*
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