diff options
| author | Jens Wiklander <jens.wiklander@linaro.org> | 2024-08-14 17:35:58 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2024-08-26 13:16:20 +0200 |
| commit | f0c8431568eedee7705c92f5c341bdc4567e3ad5 (patch) | |
| tree | d102b8ab05f0e34e24bfeb86094c4b46c3d1fe5b /drivers/tee/optee/device.c | |
| parent | c30b855e814d9094e369a19fbd86c9bb5badc154 (diff) | |
optee: probe RPMB device using RPMB subsystem
Adds support in the OP-TEE drivers (both SMC and FF-A ABIs) to probe and
use an RPMB device via the RPMB subsystem instead of passing the RPMB
frames via tee-supplicant in user space. A fallback mechanism is kept to
route RPMB frames via tee-supplicant if the RPMB subsystem isn't
available.
The OP-TEE RPC ABI is extended to support iterating over all RPMB
devices until one is found with the expected RPMB key already
programmed.
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Manuel Traut <manut@mecka.net>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/20240814153558.708365-5-jens.wiklander@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/tee/optee/device.c')
| -rw-r--r-- | drivers/tee/optee/device.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/tee/optee/device.c b/drivers/tee/optee/device.c index d296c70ddfdc..950b4661d5df 100644 --- a/drivers/tee/optee/device.c +++ b/drivers/tee/optee/device.c @@ -43,6 +43,13 @@ static int get_devices(struct tee_context *ctx, u32 session, ret = tee_client_invoke_func(ctx, &inv_arg, param); if ((ret < 0) || ((inv_arg.ret != TEEC_SUCCESS) && (inv_arg.ret != TEEC_ERROR_SHORT_BUFFER))) { + /* + * TEE_ERROR_STORAGE_NOT_AVAILABLE is returned when getting + * the list of device TAs that depends on RPMB but a usable + * RPMB device isn't found. + */ + if (inv_arg.ret == TEE_ERROR_STORAGE_NOT_AVAILABLE) + return -ENODEV; pr_err("PTA_CMD_GET_DEVICES invoke function err: %x\n", inv_arg.ret); return -EINVAL; |