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Commit 6e112de0 authored by Jérôme Forissier's avatar Jérôme Forissier Committed by Jens Wiklander
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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: default avatarJerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: default avatarMatthias Brugger <mbruger@suse.com>
Signed-off-by: default avatarJens Wiklander <jens.wiklander@linaro.org>
parent 7dd003ae

drivers/tee/optee/optee_smc.h

+9 −1
Original line number Diff line number Diff line
@@ -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

 *