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authorJérôme Forissier <jerome.forissier@linaro.org>2017-11-24 17:47:18 +0300
committerJens Wiklander <jens.wiklander@linaro.org>2018-03-06 13:03:55 +0300
commit5c5f80307ab27c53b56569245a0b12f4e3b577de (patch)
tree9e1b207fd0bc22f73e0357aaf06bb97612b8f00b /drivers/tee
parent6e112de0427874500fb9c373595481653ae4078d (diff)
downloadlinux-5c5f80307ab27c53b56569245a0b12f4e3b577de.tar.xz
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>
Diffstat (limited to 'drivers/tee')
-rw-r--r--drivers/tee/optee/core.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
index e9843c53fe31..e5fd5ed217da 100644
--- a/drivers/tee/optee/core.c
+++ b/drivers/tee/optee/core.c
@@ -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);