| /* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */ |
| /* |
| * Copyright (c) 2015-2021, Linaro Limited |
| */ |
| #ifndef OPTEE_SMC_H |
| #define OPTEE_SMC_H |
| |
| #include <linux/arm-smccc.h> |
| #include <linux/bitops.h> |
| |
| #define OPTEE_SMC_STD_CALL_VAL(func_num) \ |
| ARM_SMCCC_CALL_VAL(ARM_SMCCC_STD_CALL, ARM_SMCCC_SMC_32, \ |
| ARM_SMCCC_OWNER_TRUSTED_OS, (func_num)) |
| #define OPTEE_SMC_FAST_CALL_VAL(func_num) \ |
| ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_32, \ |
| ARM_SMCCC_OWNER_TRUSTED_OS, (func_num)) |
| |
| /* |
| * Function specified by SMC Calling convention. |
| */ |
| #define OPTEE_SMC_FUNCID_CALLS_COUNT 0xFF00 |
| #define OPTEE_SMC_CALLS_COUNT \ |
| ARM_SMCCC_CALL_VAL(OPTEE_SMC_FAST_CALL, SMCCC_SMC_32, \ |
| SMCCC_OWNER_TRUSTED_OS_END, \ |
| OPTEE_SMC_FUNCID_CALLS_COUNT) |
| |
| /* |
| * Normal cached memory (write-back), shareable for SMP systems and not |
| * shareable for UP systems. |
| */ |
| #define OPTEE_SMC_SHM_CACHED 1 |
| |
| /* |
| * a0..a7 is used as register names in the descriptions below, on arm32 |
| * that translates to r0..r7 and on arm64 to w0..w7. In both cases it's |
| * 32-bit registers. |
| */ |
| |
| /* |
| * Function specified by SMC Calling convention |
| * |
| * Return the following UID if using API specified in this file |
| * without further extensions: |
| * 384fb3e0-e7f8-11e3-af63-0002a5d5c51b. |
| * see also OPTEE_MSG_UID_* in optee_msg.h |
| */ |
| #define OPTEE_SMC_FUNCID_CALLS_UID OPTEE_MSG_FUNCID_CALLS_UID |
| #define OPTEE_SMC_CALLS_UID \ |
| ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_32, \ |
| ARM_SMCCC_OWNER_TRUSTED_OS_END, \ |
| OPTEE_SMC_FUNCID_CALLS_UID) |
| |
| /* |
| * Function specified by SMC Calling convention |
| * |
| * Returns 2.0 if using API specified in this file without further extensions. |
| * see also OPTEE_MSG_REVISION_* in optee_msg.h |
| */ |
| #define OPTEE_SMC_FUNCID_CALLS_REVISION OPTEE_MSG_FUNCID_CALLS_REVISION |
| #define OPTEE_SMC_CALLS_REVISION \ |
| ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_32, \ |
| ARM_SMCCC_OWNER_TRUSTED_OS_END, \ |
| OPTEE_SMC_FUNCID_CALLS_REVISION) |
| |
| struct optee_smc_calls_revision_result { |
| unsigned long major; |
| unsigned long minor; |
| unsigned long reserved0; |
| unsigned long reserved1; |
| }; |
| |
| /* |
| * Get UUID of Trusted OS. |
| * |
| * Used by non-secure world to figure out which Trusted OS is installed. |
| * Note that returned UUID is the UUID of the Trusted OS, not of the API. |
| * |
| * Returns UUID in a0-4 in the same way as OPTEE_SMC_CALLS_UID |
| * described above. |
| */ |
| #define OPTEE_SMC_FUNCID_GET_OS_UUID OPTEE_MSG_FUNCID_GET_OS_UUID |
| #define OPTEE_SMC_CALL_GET_OS_UUID \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_OS_UUID) |
| |
| /* |
| * Get revision of Trusted OS. |
| * |
| * Used by non-secure world to figure out which version of the Trusted OS |
| * is installed. Note that the returned revision is the revision of the |
| * Trusted OS, not of the API. |
| * |
| * Returns revision in a0-1 in the same way as OPTEE_SMC_CALLS_REVISION |
| * described above. May optionally return a 32-bit build identifier in a2, |
| * with zero meaning unspecified. |
| */ |
| #define OPTEE_SMC_FUNCID_GET_OS_REVISION OPTEE_MSG_FUNCID_GET_OS_REVISION |
| #define OPTEE_SMC_CALL_GET_OS_REVISION \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_OS_REVISION) |
| |
| struct optee_smc_call_get_os_revision_result { |
| unsigned long major; |
| unsigned long minor; |
| unsigned long build_id; |
| unsigned long reserved1; |
| }; |
| |
| /* |
| * Call with struct optee_msg_arg as argument |
| * |
| * When called with OPTEE_SMC_CALL_WITH_RPC_ARG or |
| * OPTEE_SMC_CALL_WITH_REGD_ARG in a0 there is one RPC struct optee_msg_arg |
| * following after the first struct optee_msg_arg. The RPC struct |
| * optee_msg_arg has reserved space for the number of RPC parameters as |
| * returned by OPTEE_SMC_EXCHANGE_CAPABILITIES. |
| * |
| * When calling these functions, normal world has a few responsibilities: |
| * 1. It must be able to handle eventual RPCs |
| * 2. Non-secure interrupts should not be masked |
| * 3. If asynchronous notifications has been negotiated successfully, then |
| * the interrupt for asynchronous notifications should be unmasked |
| * during this call. |
| * |
| * Call register usage, OPTEE_SMC_CALL_WITH_ARG and |
| * OPTEE_SMC_CALL_WITH_RPC_ARG: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_WITH_ARG or OPTEE_SMC_CALL_WITH_RPC_ARG |
| * a1 Upper 32 bits of a 64-bit physical pointer to a struct optee_msg_arg |
| * a2 Lower 32 bits of a 64-bit physical pointer to a struct optee_msg_arg |
| * a3 Cache settings, not used if physical pointer is in a predefined shared |
| * memory area else per OPTEE_SMC_SHM_* |
| * a4-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Call register usage, OPTEE_SMC_CALL_WITH_REGD_ARG: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_WITH_REGD_ARG |
| * a1 Upper 32 bits of a 64-bit shared memory cookie |
| * a2 Lower 32 bits of a 64-bit shared memory cookie |
| * a3 Offset of the struct optee_msg_arg in the shared memory with the |
| * supplied cookie |
| * a4-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 Return value, OPTEE_SMC_RETURN_* |
| * a1-3 Not used |
| * a4-7 Preserved |
| * |
| * OPTEE_SMC_RETURN_ETHREAD_LIMIT return register usage: |
| * a0 Return value, OPTEE_SMC_RETURN_ETHREAD_LIMIT |
| * a1-3 Preserved |
| * a4-7 Preserved |
| * |
| * RPC return register usage: |
| * a0 Return value, OPTEE_SMC_RETURN_IS_RPC(val) |
| * a1-2 RPC parameters |
| * a3-7 Resume information, must be preserved |
| * |
| * Possible return values: |
| * OPTEE_SMC_RETURN_UNKNOWN_FUNCTION Trusted OS does not recognize this |
| * function. |
| * OPTEE_SMC_RETURN_OK Call completed, result updated in |
| * the previously supplied struct |
| * optee_msg_arg. |
| * OPTEE_SMC_RETURN_ETHREAD_LIMIT Number of Trusted OS threads exceeded, |
| * try again later. |
| * OPTEE_SMC_RETURN_EBADADDR Bad physical pointer to struct |
| * optee_msg_arg. |
| * OPTEE_SMC_RETURN_EBADCMD Bad/unknown cmd in struct optee_msg_arg |
| * OPTEE_SMC_RETURN_IS_RPC() Call suspended by RPC call to normal |
| * world. |
| */ |
| #define OPTEE_SMC_FUNCID_CALL_WITH_ARG OPTEE_MSG_FUNCID_CALL_WITH_ARG |
| #define OPTEE_SMC_CALL_WITH_ARG \ |
| OPTEE_SMC_STD_CALL_VAL(OPTEE_SMC_FUNCID_CALL_WITH_ARG) |
| #define OPTEE_SMC_CALL_WITH_RPC_ARG \ |
| OPTEE_SMC_STD_CALL_VAL(OPTEE_SMC_FUNCID_CALL_WITH_RPC_ARG) |
| #define OPTEE_SMC_CALL_WITH_REGD_ARG \ |
| OPTEE_SMC_STD_CALL_VAL(OPTEE_SMC_FUNCID_CALL_WITH_REGD_ARG) |
| |
| /* |
| * Get Shared Memory Config |
| * |
| * Returns the Secure/Non-secure shared memory config. |
| * |
| * Call register usage: |
| * a0 SMC Function ID, OPTEE_SMC_GET_SHM_CONFIG |
| * a1-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Have config return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1 Physical address of start of SHM |
| * a2 Size of SHM |
| * a3 Cache settings of memory, as defined by the |
| * OPTEE_SMC_SHM_* values above |
| * a4-7 Preserved |
| * |
| * Not available register usage: |
| * a0 OPTEE_SMC_RETURN_ENOTAVAIL |
| * a1-3 Not used |
| * a4-7 Preserved |
| */ |
| #define OPTEE_SMC_FUNCID_GET_SHM_CONFIG 7 |
| #define OPTEE_SMC_GET_SHM_CONFIG \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_SHM_CONFIG) |
| |
| struct optee_smc_get_shm_config_result { |
| unsigned long status; |
| unsigned long start; |
| unsigned long size; |
| unsigned long settings; |
| }; |
| |
| /* |
| * Exchanges capabilities between normal world and secure world |
| * |
| * Call register usage: |
| * a0 SMC Function ID, OPTEE_SMC_EXCHANGE_CAPABILITIES |
| * a1 bitfield of normal world capabilities OPTEE_SMC_NSEC_CAP_* |
| * a2-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1 bitfield of secure world capabilities OPTEE_SMC_SEC_CAP_* |
| * a2 The maximum secure world notification number |
| * a3 Bit[7:0]: Number of parameters needed for RPC to be supplied |
| * as the second MSG arg struct for |
| * OPTEE_SMC_CALL_WITH_ARG |
| * Bit[31:8]: Reserved (MBZ) |
| * a4-7 Preserved |
| * |
| * Error return register usage: |
| * a0 OPTEE_SMC_RETURN_ENOTAVAIL, can't use the capabilities from normal world |
| * a1 bitfield of secure world capabilities OPTEE_SMC_SEC_CAP_* |
| * a2-7 Preserved |
| */ |
| /* Normal world works as a uniprocessor system */ |
| #define OPTEE_SMC_NSEC_CAP_UNIPROCESSOR BIT(0) |
| /* Secure world has reserved shared memory for normal world to use */ |
| #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 |
| */ |
| #define OPTEE_SMC_SEC_CAP_DYNAMIC_SHM BIT(2) |
| /* Secure world is built with virtualization support */ |
| #define OPTEE_SMC_SEC_CAP_VIRTUALIZATION BIT(3) |
| /* Secure world supports Shared Memory with a NULL reference */ |
| #define OPTEE_SMC_SEC_CAP_MEMREF_NULL BIT(4) |
| /* Secure world supports asynchronous notification of normal world */ |
| #define OPTEE_SMC_SEC_CAP_ASYNC_NOTIF BIT(5) |
| /* Secure world supports pre-allocating RPC arg struct */ |
| #define OPTEE_SMC_SEC_CAP_RPC_ARG BIT(6) |
| |
| #define OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES 9 |
| #define OPTEE_SMC_EXCHANGE_CAPABILITIES \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_EXCHANGE_CAPABILITIES) |
| |
| struct optee_smc_exchange_capabilities_result { |
| unsigned long status; |
| unsigned long capabilities; |
| unsigned long max_notif_value; |
| unsigned long data; |
| }; |
| |
| /* |
| * Disable and empties cache of shared memory objects |
| * |
| * Secure world can cache frequently used shared memory objects, for |
| * example objects used as RPC arguments. When secure world is idle this |
| * function returns one shared memory reference to free. To disable the |
| * cache and free all cached objects this function has to be called until |
| * it returns OPTEE_SMC_RETURN_ENOTAVAIL. |
| * |
| * Call register usage: |
| * a0 SMC Function ID, OPTEE_SMC_DISABLE_SHM_CACHE |
| * a1-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1 Upper 32 bits of a 64-bit Shared memory cookie |
| * a2 Lower 32 bits of a 64-bit Shared memory cookie |
| * a3-7 Preserved |
| * |
| * Cache empty return register usage: |
| * a0 OPTEE_SMC_RETURN_ENOTAVAIL |
| * a1-7 Preserved |
| * |
| * Not idle return register usage: |
| * a0 OPTEE_SMC_RETURN_EBUSY |
| * a1-7 Preserved |
| */ |
| #define OPTEE_SMC_FUNCID_DISABLE_SHM_CACHE 10 |
| #define OPTEE_SMC_DISABLE_SHM_CACHE \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_DISABLE_SHM_CACHE) |
| |
| struct optee_smc_disable_shm_cache_result { |
| unsigned long status; |
| unsigned long shm_upper32; |
| unsigned long shm_lower32; |
| unsigned long reserved0; |
| }; |
| |
| /* |
| * Enable cache of shared memory objects |
| * |
| * Secure world can cache frequently used shared memory objects, for |
| * example objects used as RPC arguments. When secure world is idle this |
| * function returns OPTEE_SMC_RETURN_OK and the cache is enabled. If |
| * secure world isn't idle OPTEE_SMC_RETURN_EBUSY is returned. |
| * |
| * Call register usage: |
| * a0 SMC Function ID, OPTEE_SMC_ENABLE_SHM_CACHE |
| * a1-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1-7 Preserved |
| * |
| * Not idle return register usage: |
| * a0 OPTEE_SMC_RETURN_EBUSY |
| * a1-7 Preserved |
| */ |
| #define OPTEE_SMC_FUNCID_ENABLE_SHM_CACHE 11 |
| #define OPTEE_SMC_ENABLE_SHM_CACHE \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_ENABLE_SHM_CACHE) |
| |
| /* |
| * Query OP-TEE about number of supported threads |
| * |
| * Normal World OS or Hypervisor issues this call to find out how many |
| * threads OP-TEE supports. That is how many standard calls can be issued |
| * in parallel before OP-TEE will return OPTEE_SMC_RETURN_ETHREAD_LIMIT. |
| * |
| * Call requests usage: |
| * a0 SMC Function ID, OPTEE_SMC_GET_THREAD_COUNT |
| * a1-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1 Number of threads |
| * a2-7 Preserved |
| * |
| * Error return: |
| * a0 OPTEE_SMC_RETURN_UNKNOWN_FUNCTION Requested call is not implemented |
| * a1-7 Preserved |
| */ |
| #define OPTEE_SMC_FUNCID_GET_THREAD_COUNT 15 |
| #define OPTEE_SMC_GET_THREAD_COUNT \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_THREAD_COUNT) |
| |
| /* |
| * Inform OP-TEE that normal world is able to receive asynchronous |
| * notifications. |
| * |
| * Call requests usage: |
| * a0 SMC Function ID, OPTEE_SMC_ENABLE_ASYNC_NOTIF |
| * a1-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1-7 Preserved |
| * |
| * Not supported return register usage: |
| * a0 OPTEE_SMC_RETURN_ENOTAVAIL |
| * a1-7 Preserved |
| */ |
| #define OPTEE_SMC_FUNCID_ENABLE_ASYNC_NOTIF 16 |
| #define OPTEE_SMC_ENABLE_ASYNC_NOTIF \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_ENABLE_ASYNC_NOTIF) |
| |
| /* |
| * Retrieve a value of notifications pending since the last call of this |
| * function. |
| * |
| * OP-TEE keeps a record of all posted values. When an interrupt is |
| * received which indicates that there are posted values this function |
| * should be called until all pended values have been retrieved. When a |
| * value is retrieved, it's cleared from the record in secure world. |
| * |
| * It is expected that this function is called from an interrupt handler |
| * in normal world. |
| * |
| * Call requests usage: |
| * a0 SMC Function ID, OPTEE_SMC_GET_ASYNC_NOTIF_VALUE |
| * a1-6 Not used |
| * a7 Hypervisor Client ID register |
| * |
| * Normal return register usage: |
| * a0 OPTEE_SMC_RETURN_OK |
| * a1 value |
| * a2 Bit[0]: OPTEE_SMC_ASYNC_NOTIF_VALUE_VALID if the value in a1 is |
| * valid, else 0 if no values where pending |
| * a2 Bit[1]: OPTEE_SMC_ASYNC_NOTIF_VALUE_PENDING if another value is |
| * pending, else 0. |
| * Bit[31:2]: MBZ |
| * a3-7 Preserved |
| * |
| * Not supported return register usage: |
| * a0 OPTEE_SMC_RETURN_ENOTAVAIL |
| * a1-7 Preserved |
| */ |
| #define OPTEE_SMC_ASYNC_NOTIF_VALUE_VALID BIT(0) |
| #define OPTEE_SMC_ASYNC_NOTIF_VALUE_PENDING BIT(1) |
| |
| /* |
| * Notification that OP-TEE expects a yielding call to do some bottom half |
| * work in a driver. |
| */ |
| #define OPTEE_SMC_ASYNC_NOTIF_VALUE_DO_BOTTOM_HALF 0 |
| |
| #define OPTEE_SMC_FUNCID_GET_ASYNC_NOTIF_VALUE 17 |
| #define OPTEE_SMC_GET_ASYNC_NOTIF_VALUE \ |
| OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_ASYNC_NOTIF_VALUE) |
| |
| /* See OPTEE_SMC_CALL_WITH_RPC_ARG above */ |
| #define OPTEE_SMC_FUNCID_CALL_WITH_RPC_ARG 18 |
| |
| /* See OPTEE_SMC_CALL_WITH_REGD_ARG above */ |
| #define OPTEE_SMC_FUNCID_CALL_WITH_REGD_ARG 19 |
| |
| /* |
| * Resume from RPC (for example after processing a foreign interrupt) |
| * |
| * Call register usage: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_RETURN_FROM_RPC |
| * a1-3 Value of a1-3 when OPTEE_SMC_CALL_WITH_ARG returned |
| * OPTEE_SMC_RETURN_RPC in a0 |
| * |
| * Return register usage is the same as for OPTEE_SMC_*CALL_WITH_ARG above. |
| * |
| * Possible return values |
| * OPTEE_SMC_RETURN_UNKNOWN_FUNCTION Trusted OS does not recognize this |
| * function. |
| * OPTEE_SMC_RETURN_OK Original call completed, result |
| * updated in the previously supplied. |
| * struct optee_msg_arg |
| * OPTEE_SMC_RETURN_RPC Call suspended by RPC call to normal |
| * world. |
| * OPTEE_SMC_RETURN_ERESUME Resume failed, the opaque resume |
| * information was corrupt. |
| */ |
| #define OPTEE_SMC_FUNCID_RETURN_FROM_RPC 3 |
| #define OPTEE_SMC_CALL_RETURN_FROM_RPC \ |
| OPTEE_SMC_STD_CALL_VAL(OPTEE_SMC_FUNCID_RETURN_FROM_RPC) |
| |
| #define OPTEE_SMC_RETURN_RPC_PREFIX_MASK 0xFFFF0000 |
| #define OPTEE_SMC_RETURN_RPC_PREFIX 0xFFFF0000 |
| #define OPTEE_SMC_RETURN_RPC_FUNC_MASK 0x0000FFFF |
| |
| #define OPTEE_SMC_RETURN_GET_RPC_FUNC(ret) \ |
| ((ret) & OPTEE_SMC_RETURN_RPC_FUNC_MASK) |
| |
| #define OPTEE_SMC_RPC_VAL(func) ((func) | OPTEE_SMC_RETURN_RPC_PREFIX) |
| |
| /* |
| * Allocate memory for RPC parameter passing. The memory is used to hold a |
| * struct optee_msg_arg. |
| * |
| * "Call" register usage: |
| * a0 This value, OPTEE_SMC_RETURN_RPC_ALLOC |
| * a1 Size in bytes of required argument memory |
| * a2 Not used |
| * a3 Resume information, must be preserved |
| * a4-5 Not used |
| * a6-7 Resume information, must be preserved |
| * |
| * "Return" register usage: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_RETURN_FROM_RPC. |
| * a1 Upper 32 bits of 64-bit physical pointer to allocated |
| * memory, (a1 == 0 && a2 == 0) if size was 0 or if memory can't |
| * be allocated. |
| * a2 Lower 32 bits of 64-bit physical pointer to allocated |
| * memory, (a1 == 0 && a2 == 0) if size was 0 or if memory can't |
| * be allocated |
| * a3 Preserved |
| * a4 Upper 32 bits of 64-bit Shared memory cookie used when freeing |
| * the memory or doing an RPC |
| * a5 Lower 32 bits of 64-bit Shared memory cookie used when freeing |
| * the memory or doing an RPC |
| * a6-7 Preserved |
| */ |
| #define OPTEE_SMC_RPC_FUNC_ALLOC 0 |
| #define OPTEE_SMC_RETURN_RPC_ALLOC \ |
| OPTEE_SMC_RPC_VAL(OPTEE_SMC_RPC_FUNC_ALLOC) |
| |
| /* |
| * Free memory previously allocated by OPTEE_SMC_RETURN_RPC_ALLOC |
| * |
| * "Call" register usage: |
| * a0 This value, OPTEE_SMC_RETURN_RPC_FREE |
| * a1 Upper 32 bits of 64-bit shared memory cookie belonging to this |
| * argument memory |
| * a2 Lower 32 bits of 64-bit shared memory cookie belonging to this |
| * argument memory |
| * a3-7 Resume information, must be preserved |
| * |
| * "Return" register usage: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_RETURN_FROM_RPC. |
| * a1-2 Not used |
| * a3-7 Preserved |
| */ |
| #define OPTEE_SMC_RPC_FUNC_FREE 2 |
| #define OPTEE_SMC_RETURN_RPC_FREE \ |
| OPTEE_SMC_RPC_VAL(OPTEE_SMC_RPC_FUNC_FREE) |
| |
| /* |
| * Deliver a foreign interrupt in normal world. |
| * |
| * "Call" register usage: |
| * a0 OPTEE_SMC_RETURN_RPC_FOREIGN_INTR |
| * a1-7 Resume information, must be preserved |
| * |
| * "Return" register usage: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_RETURN_FROM_RPC. |
| * a1-7 Preserved |
| */ |
| #define OPTEE_SMC_RPC_FUNC_FOREIGN_INTR 4 |
| #define OPTEE_SMC_RETURN_RPC_FOREIGN_INTR \ |
| OPTEE_SMC_RPC_VAL(OPTEE_SMC_RPC_FUNC_FOREIGN_INTR) |
| |
| /* |
| * Do an RPC request. The supplied struct optee_msg_arg tells which |
| * request to do and the parameters for the request. The following fields |
| * are used (the rest are unused): |
| * - cmd the Request ID |
| * - ret return value of the request, filled in by normal world |
| * - num_params number of parameters for the request |
| * - params the parameters |
| * - param_attrs attributes of the parameters |
| * |
| * "Call" register usage: |
| * a0 OPTEE_SMC_RETURN_RPC_CMD |
| * a1 Upper 32 bits of a 64-bit Shared memory cookie holding a |
| * struct optee_msg_arg, must be preserved, only the data should |
| * be updated |
| * a2 Lower 32 bits of a 64-bit Shared memory cookie holding a |
| * struct optee_msg_arg, must be preserved, only the data should |
| * be updated |
| * a3-7 Resume information, must be preserved |
| * |
| * "Return" register usage: |
| * a0 SMC Function ID, OPTEE_SMC_CALL_RETURN_FROM_RPC. |
| * a1-2 Not used |
| * a3-7 Preserved |
| */ |
| #define OPTEE_SMC_RPC_FUNC_CMD 5 |
| #define OPTEE_SMC_RETURN_RPC_CMD \ |
| OPTEE_SMC_RPC_VAL(OPTEE_SMC_RPC_FUNC_CMD) |
| |
| /* Returned in a0 */ |
| #define OPTEE_SMC_RETURN_UNKNOWN_FUNCTION 0xFFFFFFFF |
| |
| /* Returned in a0 only from Trusted OS functions */ |
| #define OPTEE_SMC_RETURN_OK 0x0 |
| #define OPTEE_SMC_RETURN_ETHREAD_LIMIT 0x1 |
| #define OPTEE_SMC_RETURN_EBUSY 0x2 |
| #define OPTEE_SMC_RETURN_ERESUME 0x3 |
| #define OPTEE_SMC_RETURN_EBADADDR 0x4 |
| #define OPTEE_SMC_RETURN_EBADCMD 0x5 |
| #define OPTEE_SMC_RETURN_ENOMEM 0x6 |
| #define OPTEE_SMC_RETURN_ENOTAVAIL 0x7 |
| #define OPTEE_SMC_RETURN_IS_RPC(ret) __optee_smc_return_is_rpc((ret)) |
| |
| static inline bool __optee_smc_return_is_rpc(u32 ret) |
| { |
| return ret != OPTEE_SMC_RETURN_UNKNOWN_FUNCTION && |
| (ret & OPTEE_SMC_RETURN_RPC_PREFIX_MASK) == |
| OPTEE_SMC_RETURN_RPC_PREFIX; |
| } |
| |
| #endif /* OPTEE_SMC_H */ |