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authorJérôme Forissier <jerome.forissier@linaro.org>2017-11-24 17:47:17 +0300
committerJens Wiklander <jens.wiklander@linaro.org>2018-03-06 13:03:55 +0300
commit6e112de0427874500fb9c373595481653ae4078d (patch)
treeb3f809ff28179cf9b94f568373469887465099e1 /drivers/tee
parent7dd003aec2016e90d33f25f90ad4cebb12224a8a (diff)
downloadlinux-6e112de0427874500fb9c373595481653ae4078d.tar.xz
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>
Diffstat (limited to 'drivers/tee')
-rw-r--r--drivers/tee/optee/optee_smc.h10
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
*