Update the header files describing the secure world ABI, both with and without FF-A. The ABI is extended to deal with protected memory, but as usual backward compatible.
Reviewed-by: Sumit Garg sumit.garg@oss.qualcomm.com Signed-off-by: Jens Wiklander jens.wiklander@linaro.org --- drivers/tee/optee/optee_ffa.h | 27 ++++++++--- drivers/tee/optee/optee_msg.h | 84 ++++++++++++++++++++++++++++++----- drivers/tee/optee/optee_smc.h | 37 ++++++++++++++- 3 files changed, 130 insertions(+), 18 deletions(-)
diff --git a/drivers/tee/optee/optee_ffa.h b/drivers/tee/optee/optee_ffa.h index 257735ae5b56..cc257e7956a3 100644 --- a/drivers/tee/optee/optee_ffa.h +++ b/drivers/tee/optee/optee_ffa.h @@ -81,7 +81,7 @@ * as the second MSG arg struct for * OPTEE_FFA_YIELDING_CALL_WITH_ARG. * Bit[31:8]: Reserved (MBZ) - * w5: Bitfield of secure world capabilities OPTEE_FFA_SEC_CAP_* below, + * w5: Bitfield of OP-TEE capabilities OPTEE_FFA_SEC_CAP_* * w6: The maximum secure world notification number * w7: Not used (MBZ) */ @@ -94,6 +94,8 @@ #define OPTEE_FFA_SEC_CAP_ASYNC_NOTIF BIT(1) /* OP-TEE supports probing for RPMB device if needed */ #define OPTEE_FFA_SEC_CAP_RPMB_PROBE BIT(2) +/* OP-TEE supports Protected Memory for secure data path */ +#define OPTEE_FFA_SEC_CAP_PROTMEM BIT(3)
#define OPTEE_FFA_EXCHANGE_CAPABILITIES OPTEE_FFA_BLOCKING_CALL(2)
@@ -108,7 +110,7 @@ * * Return register usage: * w3: Error code, 0 on success - * w4-w7: Note used (MBZ) + * w4-w7: Not used (MBZ) */ #define OPTEE_FFA_UNREGISTER_SHM OPTEE_FFA_BLOCKING_CALL(3)
@@ -119,16 +121,31 @@ * Call register usage: * w3: Service ID, OPTEE_FFA_ENABLE_ASYNC_NOTIF * w4: Notification value to request bottom half processing, should be - * less than OPTEE_FFA_MAX_ASYNC_NOTIF_VALUE. + * less than OPTEE_FFA_MAX_ASYNC_NOTIF_VALUE * w5-w7: Not used (MBZ) * * Return register usage: * w3: Error code, 0 on success - * w4-w7: Note used (MBZ) + * w4-w7: Not used (MBZ) */ #define OPTEE_FFA_ENABLE_ASYNC_NOTIF OPTEE_FFA_BLOCKING_CALL(5)
-#define OPTEE_FFA_MAX_ASYNC_NOTIF_VALUE 64 +#define OPTEE_FFA_MAX_ASYNC_NOTIF_VALUE 64 + +/* + * Release Protected memory + * + * Call register usage: + * w3: Service ID, OPTEE_FFA_RECLAIM_PROTMEM + * w4: Shared memory handle, lower bits + * w5: Shared memory handle, higher bits + * w6-w7: Not used (MBZ) + * + * Return register usage: + * w3: Error code, 0 on success + * w4-w7: Note used (MBZ) + */ +#define OPTEE_FFA_RELEASE_PROTMEM OPTEE_FFA_BLOCKING_CALL(8)
/* * Call with struct optee_msg_arg as argument in the supplied shared memory diff --git a/drivers/tee/optee/optee_msg.h b/drivers/tee/optee/optee_msg.h index e8840a82b983..838e1d4a22f0 100644 --- a/drivers/tee/optee/optee_msg.h +++ b/drivers/tee/optee/optee_msg.h @@ -133,13 +133,13 @@ struct optee_msg_param_rmem { };
/** - * struct optee_msg_param_fmem - ffa memory reference parameter + * struct optee_msg_param_fmem - FF-A memory reference parameter * @offs_lower: Lower bits of offset into shared memory reference * @offs_upper: Upper bits of offset into shared memory reference * @internal_offs: Internal offset into the first page of shared memory * reference * @size: Size of the buffer - * @global_id: Global identifier of Shared memory + * @global_id: Global identifier of the shared memory */ struct optee_msg_param_fmem { u32 offs_low; @@ -165,7 +165,7 @@ struct optee_msg_param_value { * @attr: attributes * @tmem: parameter by temporary memory reference * @rmem: parameter by registered memory reference - * @fmem: parameter by ffa registered memory reference + * @fmem: parameter by FF-A registered memory reference * @value: parameter by opaque value * @octets: parameter by octet string * @@ -296,6 +296,18 @@ struct optee_msg_arg { */ #define OPTEE_MSG_FUNCID_GET_OS_REVISION 0x0001
+/* + * Values used in OPTEE_MSG_CMD_LEND_PROTMEM below + * OPTEE_MSG_PROTMEM_RESERVED Reserved + * OPTEE_MSG_PROTMEM_SECURE_VIDEO_PLAY Secure Video Playback + * OPTEE_MSG_PROTMEM_TRUSTED_UI Trused UI + * OPTEE_MSG_PROTMEM_SECURE_VIDEO_RECORD Secure Video Recording + */ +#define OPTEE_MSG_PROTMEM_RESERVED 0 +#define OPTEE_MSG_PROTMEM_SECURE_VIDEO_PLAY 1 +#define OPTEE_MSG_PROTMEM_TRUSTED_UI 2 +#define OPTEE_MSG_PROTMEM_SECURE_VIDEO_RECORD 3 + /* * Do a secure call with struct optee_msg_arg as argument * The OPTEE_MSG_CMD_* below defines what goes in struct optee_msg_arg::cmd @@ -337,15 +349,63 @@ struct optee_msg_arg { * OPTEE_MSG_CMD_STOP_ASYNC_NOTIF informs secure world that from now is * normal world unable to process asynchronous notifications. Typically * used when the driver is shut down. + * + * OPTEE_MSG_CMD_LEND_PROTMEM lends protected memory. The passed normal + * physical memory is protected from normal world access. The memory + * should be unmapped prior to this call since it becomes inaccessible + * during the request. + * Parameters are passed as: + * [in] param[0].attr OPTEE_MSG_ATTR_TYPE_VALUE_INPUT + * [in] param[0].u.value.a OPTEE_MSG_PROTMEM_* defined above + * [in] param[1].attr OPTEE_MSG_ATTR_TYPE_TMEM_INPUT + * [in] param[1].u.tmem.buf_ptr physical address + * [in] param[1].u.tmem.size size + * [in] param[1].u.tmem.shm_ref holds protected memory reference + * + * OPTEE_MSG_CMD_RECLAIM_PROTMEM reclaims a previously lent protected + * memory reference. The physical memory is accessible by the normal world + * after this function has return and can be mapped again. The information + * is passed as: + * [in] param[0].attr OPTEE_MSG_ATTR_TYPE_VALUE_INPUT + * [in] param[0].u.value.a holds protected memory cookie + * + * OPTEE_MSG_CMD_GET_PROTMEM_CONFIG get configuration for a specific + * protected memory use case. Parameters are passed as: + * [in] param[0].attr OPTEE_MSG_ATTR_TYPE_VALUE_INOUT + * [in] param[0].value.a OPTEE_MSG_PROTMEM_* + * [in] param[1].attr OPTEE_MSG_ATTR_TYPE_{R,F}MEM_OUTPUT + * [in] param[1].u.{r,f}mem Buffer or NULL + * [in] param[1].u.{r,f}mem.size Provided size of buffer or 0 for query + * output for the protected use case: + * [out] param[0].value.a Minimal size of protected memory + * [out] param[0].value.b Required alignment of size and start of + * protected memory + * [out] param[0].value.c PA width, max 64 + * [out] param[1].{r,f}mem.size Size of output data + * [out] param[1].{r,f}mem If non-NULL, contains an array of + * uint32_t memory attributes that must be + * included when lending memory for this + * use case + * + * OPTEE_MSG_CMD_ASSIGN_PROTMEM assigns use-case to protected memory + * previously lent using the FFA_LEND framework ABI. Parameters are passed + * as: + * [in] param[0].attr OPTEE_MSG_ATTR_TYPE_VALUE_INPUT + * [in] param[0].u.value.a holds protected memory cookie + * [in] param[0].u.value.b OPTEE_MSG_PROTMEM_* defined above */ -#define OPTEE_MSG_CMD_OPEN_SESSION 0 -#define OPTEE_MSG_CMD_INVOKE_COMMAND 1 -#define OPTEE_MSG_CMD_CLOSE_SESSION 2 -#define OPTEE_MSG_CMD_CANCEL 3 -#define OPTEE_MSG_CMD_REGISTER_SHM 4 -#define OPTEE_MSG_CMD_UNREGISTER_SHM 5 -#define OPTEE_MSG_CMD_DO_BOTTOM_HALF 6 -#define OPTEE_MSG_CMD_STOP_ASYNC_NOTIF 7 -#define OPTEE_MSG_FUNCID_CALL_WITH_ARG 0x0004 +#define OPTEE_MSG_CMD_OPEN_SESSION 0 +#define OPTEE_MSG_CMD_INVOKE_COMMAND 1 +#define OPTEE_MSG_CMD_CLOSE_SESSION 2 +#define OPTEE_MSG_CMD_CANCEL 3 +#define OPTEE_MSG_CMD_REGISTER_SHM 4 +#define OPTEE_MSG_CMD_UNREGISTER_SHM 5 +#define OPTEE_MSG_CMD_DO_BOTTOM_HALF 6 +#define OPTEE_MSG_CMD_STOP_ASYNC_NOTIF 7 +#define OPTEE_MSG_CMD_LEND_PROTMEM 8 +#define OPTEE_MSG_CMD_RECLAIM_PROTMEM 9 +#define OPTEE_MSG_CMD_GET_PROTMEM_CONFIG 10 +#define OPTEE_MSG_CMD_ASSIGN_PROTMEM 11 +#define OPTEE_MSG_FUNCID_CALL_WITH_ARG 0x0004
#endif /* _OPTEE_MSG_H */ diff --git a/drivers/tee/optee/optee_smc.h b/drivers/tee/optee/optee_smc.h index 879426300821..accf76a99288 100644 --- a/drivers/tee/optee/optee_smc.h +++ b/drivers/tee/optee/optee_smc.h @@ -264,7 +264,6 @@ struct optee_smc_get_shm_config_result { #define OPTEE_SMC_SEC_CAP_HAVE_RESERVED_SHM BIT(0) /* Secure world can communicate via previously unregistered shared memory */ #define OPTEE_SMC_SEC_CAP_UNREGISTERED_SHM BIT(1) - /* * Secure world supports commands "register/unregister shared memory", * secure world accepts command buffers located in any parts of non-secure RAM @@ -280,6 +279,10 @@ struct optee_smc_get_shm_config_result { #define OPTEE_SMC_SEC_CAP_RPC_ARG BIT(6) /* Secure world supports probing for RPMB device if needed */ #define OPTEE_SMC_SEC_CAP_RPMB_PROBE BIT(7) +/* Secure world supports protected memory */ +#define OPTEE_SMC_SEC_CAP_PROTMEM BIT(8) +/* Secure world supports dynamic protected memory */ +#define OPTEE_SMC_SEC_CAP_DYNAMIC_PROTMEM BIT(9)
#define OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES 9 #define OPTEE_SMC_EXCHANGE_CAPABILITIES \ @@ -451,6 +454,38 @@ struct optee_smc_disable_shm_cache_result {
/* See OPTEE_SMC_CALL_WITH_REGD_ARG above */ #define OPTEE_SMC_FUNCID_CALL_WITH_REGD_ARG 19 +/* + * Get protected memory config + * + * Returns the protected memory config. + * + * Call register usage: + * a0 SMC Function ID, OPTEE_SMC_GET_PROTMEM_CONFIG + * a2-6 Not used, must be zero + * a7 Hypervisor Client ID register + * + * Have config return register usage: + * a0 OPTEE_SMC_RETURN_OK + * a1 Physical address of start of protected memory + * a2 Size of protected memory + * a3 PA width, max 64 + * a4-7 Preserved + * + * Not available register usage: + * a0 OPTEE_SMC_RETURN_ENOTAVAIL + * a1-3 Not used + * a4-7 Preserved + */ +#define OPTEE_SMC_FUNCID_GET_PROTMEM_CONFIG 20 +#define OPTEE_SMC_GET_PROTMEM_CONFIG \ + OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_PROTMEM_CONFIG) + +struct optee_smc_get_protmem_config_result { + unsigned long status; + unsigned long start; + unsigned long size; + unsigned long pa_width; +};
/* * Resume from RPC (for example after processing a foreign interrupt)