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| author | Jérôme Forissier <jerome.forissier@linaro.org> | 2017-11-24 15:47:17 +0100 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2018-03-06 11:03:55 +0100 |
| commit | 6e112de0427874500fb9c373595481653ae4078d (patch) | |
| tree | b3f809ff28179cf9b94f568373469887465099e1 | |
| parent | 7dd003aec2016e90d33f25f90ad4cebb12224a8a (diff) | |
| download | linux-6e112de0427874500fb9c373595481653ae4078d.tar.gz linux-6e112de0427874500fb9c373595481653ae4078d.tar.bz2 linux-6e112de0427874500fb9c373595481653ae4078d.zip | |
tee: optee: GET_OS_REVISION: document a2 as a build identifier
In the OPTEE_SMC_CALL_GET_OS_REVISION request, the previously reserved
parameter a2 is now documented as being an optional build identifier
(such as an SCM revision or commit ID, for instance).
A new structure optee_smc_call_get_os_revision_result is introduced to
be used when querying the secure OS version, instead of re-using the
struct defined for OPTEE_SMC_CALLS_REVISION.
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Matthias Brugger <mbruger@suse.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
| -rw-r--r-- | drivers/tee/optee/optee_smc.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/tee/optee/optee_smc.h b/drivers/tee/optee/optee_smc.h index 7cd327243ada..bbf0cf028c16 100644 --- a/drivers/tee/optee/optee_smc.h +++ b/drivers/tee/optee/optee_smc.h @@ -112,12 +112,20 @@ struct optee_smc_calls_revision_result { * Trusted OS, not of the API. * * Returns revision in a0-1 in the same way as OPTEE_SMC_CALLS_REVISION - * described above. + * described above. May optionally return a 32-bit build identifier in a2, + * with zero meaning unspecified. */ #define OPTEE_SMC_FUNCID_GET_OS_REVISION OPTEE_MSG_FUNCID_GET_OS_REVISION #define OPTEE_SMC_CALL_GET_OS_REVISION \ OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_OS_REVISION) +struct optee_smc_call_get_os_revision_result { + unsigned long major; + unsigned long minor; + unsigned long build_id; + unsigned long reserved1; +}; + /* * Call with struct optee_msg_arg as argument * |