If OP-TEE core is compiled with support of REE FS and RPMB at the same time (CFG_RPMB_FS ?= y; CFG_RPMB_FS ?= y), and persistent storage API is used with TEE_STORAGE_PRIVATE storage id, it will lead to TA panic.
E/TC:? 0 TA panicked with code 0xffff0009 ..... E/TC:? 0 Call stack: E/TC:? 0 0x000000004002f2f8 TEE_OpenPersistentObject at lib/libutee/tee_api_objects.c:422
In this particular case TEE_ERROR_STORAGE_NOT_AVAILABLE is more suitable than TEE_ERROR_NOT_IMPLEMENTED, as it provides to a TA a possibility to handle this error code [1].
From GPD TEE Internal Core specification [2]:
TEE_ERROR_STORAGE_NOT_AVAILABLE - if the persistent object is stored in a storage area which is currently inaccessible. It may be associated with the device but unplugged, busy, or inaccessible for some other reason.
[1]: https://github.com/OP-TEE/optee_os/blob/94db01ef448d1e552161c2d861d57a5f8bda... [2]: https://globalplatform.org/wp-content/uploads/2018/06/GPD_TEE_Internal_Core_...
Signed-off-by: Igor Opaniuk igor.opaniuk@linaro.org --- drivers/tee/optee/supplicant.c | 4 ++-- include/tee.h | 1 + 2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/tee/optee/supplicant.c b/drivers/tee/optee/supplicant.c index b1ea65b..c5726ec 100644 --- a/drivers/tee/optee/supplicant.c +++ b/drivers/tee/optee/supplicant.c @@ -82,8 +82,8 @@ void optee_suppl_cmd(struct udevice *dev, struct tee_shm *shm_arg, cmd_shm_free(arg); break; case OPTEE_MSG_RPC_CMD_FS: - debug("OPTEE_MSG_RPC_CMD_FS not implemented\n"); - arg->ret = TEE_ERROR_NOT_IMPLEMENTED; + debug("REE FS storage isn't available\n"); + arg->ret = TEE_ERROR_STORAGE_NOT_AVAILABLE; break; case OPTEE_MSG_RPC_CMD_RPMB: optee_suppl_cmd_rpmb(dev, arg); diff --git a/include/tee.h b/include/tee.h index 98b1c9c..edd9f9b 100644 --- a/include/tee.h +++ b/include/tee.h @@ -34,6 +34,7 @@ * struct tee_version_data::gen_caps */ #define TEE_SUCCESS 0x00000000 +#define TEE_ERROR_STORAGE_NOT_AVAILABLE 0xf0100003 #define TEE_ERROR_GENERIC 0xffff0000 #define TEE_ERROR_BAD_PARAMETERS 0xffff0006 #define TEE_ERROR_ITEM_NOT_FOUND 0xffff0008