On 27/01/2026 07:23, Sumit Garg wrote:
> From: Sumit Garg <[email protected]>
>
> OP-TEE message UID check API can be useful to know whether OP-TEE
> is enabled on not assuming the corresponding SMC call is properly
> handled if OP-TEE is not supported.
>
> This API can be used by platform code to know OP-TEE presence and
> on that basis OP-TEE DT node can be added as part of DT fixups for
> the OP-TEE driver probe to happen for both U-Boot and Linux.
>
> Signed-off-by: Sumit Garg <[email protected]>
Reviewed-by: Casey Connolly <[email protected]>
> ---
> drivers/tee/optee/core.c | 5 +++++
> include/tee/optee.h | 9 +++++++++
> 2 files changed, 14 insertions(+)
>
> diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
> index 5fc0505c788..4d67c948ec1 100644
> --- a/drivers/tee/optee/core.c
> +++ b/drivers/tee/optee/core.c
> @@ -795,6 +795,11 @@ static optee_invoke_fn *get_invoke_func(struct udevice
> *dev)
> return ERR_PTR(-EINVAL);
> }
>
> +bool is_optee_smc_api(void)
> +{
> + return is_optee_api(optee_smccc_smc);
> +}
> +
> static int optee_of_to_plat(struct udevice *dev)
> {
> struct optee_pdata *pdata = dev_get_plat(dev);
> diff --git a/include/tee/optee.h b/include/tee/optee.h
> index 77729450bb6..d1194493780 100644
> --- a/include/tee/optee.h
> +++ b/include/tee/optee.h
> @@ -65,4 +65,13 @@ static inline int optee_copy_fdt_nodes(void *new_blob)
> }
> #endif
>
> +#if defined(CONFIG_OPTEE)
> +bool is_optee_smc_api(void);
> +#else
> +static inline bool is_optee_smc_api(void)
> +{
> + return false;
> +}
> +#endif
> +
> #endif /* _OPTEE_H */
--
// Casey (she/her)
