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]> --- 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 */ -- 2.51.0
