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Commit 5c5f8030 authored by Jérôme Forissier's avatar Jérôme Forissier Committed by Jens Wiklander
Browse files

tee: optee: report OP-TEE revision information 



When the driver initializes, report the following information
about the OP-TEE OS:
- major and minor version,
- build identifier (if available).

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 6e112de0

drivers/tee/optee/core.c

+23 −0
Original line number Diff line number Diff line
@@ -356,6 +356,27 @@ static bool optee_msg_api_uid_is_optee_api(optee_invoke_fn *invoke_fn) 
	return false;

}



static void optee_msg_get_os_revision(optee_invoke_fn *invoke_fn)

{

	union {

		struct arm_smccc_res smccc;

		struct optee_smc_call_get_os_revision_result result;

	} res = {

		.result = {

			.build_id = 0

		}

	};



	invoke_fn(OPTEE_SMC_CALL_GET_OS_REVISION, 0, 0, 0, 0, 0, 0, 0,

		  &res.smccc);



	if (res.result.build_id)

		pr_info("revision %lu.%lu (%08lx)", res.result.major,

			res.result.minor, res.result.build_id);

	else

		pr_info("revision %lu.%lu", res.result.major, res.result.minor);

}



static bool optee_msg_api_revision_is_compatible(optee_invoke_fn *invoke_fn)

{

	union {
@@ -547,6 +568,8 @@ static struct optee *optee_probe(struct device_node *np) 
		return ERR_PTR(-EINVAL);

	}



	optee_msg_get_os_revision(invoke_fn);



	if (!optee_msg_api_revision_is_compatible(invoke_fn)) {

		pr_warn("api revision mismatch\n");

		return ERR_PTR(-EINVAL);