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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>
This commit is contained in:
Jérôme Forissier 2017-11-24 15:47:18 +01:00 committed by Jens Wiklander
parent 6e112de042
commit 5c5f80307a
1 changed files with 23 additions and 0 deletions
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23
drivers/tee/optee/core.c
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@ -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);