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| author | Cedric Neveux <cedric.neveux@nxp.com> | 2019-03-04 10:54:23 +0300 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2020-08-21 09:55:13 +0300 |
| commit | ba171d3f0850003216fd1a85190d17b1feddb961 (patch) | |
| tree | 32c534e8e4d18d1e2a9350b7333f53325137c209 /drivers/tee/optee/optee_smc.h | |
| parent | 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff) | |
| download | linux-ba171d3f0850003216fd1a85190d17b1feddb961.tar.xz | |
driver: tee: Handle NULL pointer indication from client
TEE Client introduce a new capability "TEE_GEN_CAP_MEMREF_NULL"
to handle the support of the shared memory buffer with a NULL pointer.
This capability depends on TEE Capabilities and driver support.
Driver and TEE exchange capabilities at driver initialization.
Signed-off-by: Michael Whitfield <michael.whitfield@nxp.com>
Signed-off-by: Cedric Neveux <cedric.neveux@nxp.com>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org> (QEMU)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'drivers/tee/optee/optee_smc.h')
| -rw-r--r-- | drivers/tee/optee/optee_smc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tee/optee/optee_smc.h b/drivers/tee/optee/optee_smc.h index c72122d9c997..777ad54d4c2c 100644 --- a/drivers/tee/optee/optee_smc.h +++ b/drivers/tee/optee/optee_smc.h @@ -215,6 +215,9 @@ struct optee_smc_get_shm_config_result { */ #define OPTEE_SMC_SEC_CAP_DYNAMIC_SHM BIT(2) +/* Secure world supports Shared Memory with a NULL buffer reference */ +#define OPTEE_SMC_SEC_CAP_MEMREF_NULL BIT(4) + #define OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES 9 #define OPTEE_SMC_EXCHANGE_CAPABILITIES \ OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES) |