From: Jérôme Forissier Date: Fri, 24 Nov 2017 14:47:17 +0000 (+0100) Subject: tee: optee: GET_OS_REVISION: document a2 as a build identifier X-Git-Tag: v4.17-rc1~103^2~11^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6e112de0427874500fb9c373595481653ae4078d;p=thirdparty%2Fkernel%2Flinux.git 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 Reviewed-by: Matthias Brugger Signed-off-by: Jens Wiklander --- diff --git a/drivers/tee/optee/optee_smc.h b/drivers/tee/optee/optee_smc.h index 7cd327243ada9..bbf0cf028c162 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 *