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: Jerome Forissier <jerome.forissier@linaro.org> Reviewed-by: Matthias Brugger <mbruger@suse.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
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@ -356,6 +356,27 @@ static bool optee_msg_api_uid_is_optee_api(optee_invoke_fn *invoke_fn)
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return false;
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}
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static void optee_msg_get_os_revision(optee_invoke_fn *invoke_fn)
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{
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union {
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struct arm_smccc_res smccc;
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struct optee_smc_call_get_os_revision_result result;
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} res = {
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.result = {
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.build_id = 0
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}
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};
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invoke_fn(OPTEE_SMC_CALL_GET_OS_REVISION, 0, 0, 0, 0, 0, 0, 0,
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&res.smccc);
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if (res.result.build_id)
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pr_info("revision %lu.%lu (%08lx)", res.result.major,
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res.result.minor, res.result.build_id);
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else
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pr_info("revision %lu.%lu", res.result.major, res.result.minor);
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}
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static bool optee_msg_api_revision_is_compatible(optee_invoke_fn *invoke_fn)
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{
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union {
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@ -547,6 +568,8 @@ static struct optee *optee_probe(struct device_node *np)
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return ERR_PTR(-EINVAL);
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}
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optee_msg_get_os_revision(invoke_fn);
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if (!optee_msg_api_revision_is_compatible(invoke_fn)) {
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pr_warn("api revision mismatch\n");
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return ERR_PTR(-EINVAL);
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