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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | /* SPDX-License-Identifier: MIT */ /* * Copyright 2019 Advanced Micro Devices, Inc. */ /* * This file has definitions related to Host and AMD-TEE Trusted OS interface. * These definitions must match the definitions on the TEE side. */ #ifndef AMDTEE_IF_H #define AMDTEE_IF_H #include <linux/types.h> /***************************************************************************** ** TEE Param ******************************************************************************/ #define TEE_MAX_PARAMS 4 /** * struct memref - memory reference structure * @buf_id: buffer ID of the buffer mapped by TEE_CMD_ID_MAP_SHARED_MEM * @offset: offset in bytes from beginning of the buffer * @size: data size in bytes */ struct memref { u32 buf_id; u32 offset; u32 size; }; struct value { u32 a; u32 b; }; /* * Parameters passed to open_session or invoke_command */ union tee_op_param { struct memref mref; struct value val; }; struct tee_operation { u32 param_types; union tee_op_param params[TEE_MAX_PARAMS]; }; /* Must be same as in GP TEE specification */ #define TEE_OP_PARAM_TYPE_NONE 0 #define TEE_OP_PARAM_TYPE_VALUE_INPUT 1 #define TEE_OP_PARAM_TYPE_VALUE_OUTPUT 2 #define TEE_OP_PARAM_TYPE_VALUE_INOUT 3 #define TEE_OP_PARAM_TYPE_INVALID 4 #define TEE_OP_PARAM_TYPE_MEMREF_INPUT 5 #define TEE_OP_PARAM_TYPE_MEMREF_OUTPUT 6 #define TEE_OP_PARAM_TYPE_MEMREF_INOUT 7 #define TEE_PARAM_TYPE_GET(t, i) (((t) >> ((i) * 4)) & 0xF) #define TEE_PARAM_TYPES(t0, t1, t2, t3) \ ((t0) | ((t1) << 4) | ((t2) << 8) | ((t3) << 12)) /***************************************************************************** ** TEE Commands *****************************************************************************/ /* * The shared memory between rich world and secure world may be physically * non-contiguous. Below structures are meant to describe a shared memory region * via scatter/gather (sg) list */ /** * struct tee_sg_desc - sg descriptor for a physically contiguous buffer * @low_addr: [in] bits[31:0] of buffer's physical address. Must be 4KB aligned * @hi_addr: [in] bits[63:32] of the buffer's physical address * @size: [in] size in bytes (must be multiple of 4KB) */ struct tee_sg_desc { u32 low_addr; u32 hi_addr; u32 size; }; /** * struct tee_sg_list - structure describing a scatter/gather list * @count: [in] number of sg descriptors * @size: [in] total size of all buffers in the list. Must be multiple of 4KB * @buf: [in] list of sg buffer descriptors */ #define TEE_MAX_SG_DESC 64 struct tee_sg_list { u32 count; u32 size; struct tee_sg_desc buf[TEE_MAX_SG_DESC]; }; /** * struct tee_cmd_map_shared_mem - command to map shared memory * @buf_id: [out] return buffer ID value * @sg_list: [in] list describing memory to be mapped */ struct tee_cmd_map_shared_mem { u32 buf_id; struct tee_sg_list sg_list; }; /** * struct tee_cmd_unmap_shared_mem - command to unmap shared memory * @buf_id: [in] buffer ID of memory to be unmapped */ struct tee_cmd_unmap_shared_mem { u32 buf_id; }; /** * struct tee_cmd_load_ta - load Trusted Application (TA) binary into TEE * @low_addr: [in] bits [31:0] of the physical address of the TA binary * @hi_addr: [in] bits [63:32] of the physical address of the TA binary * @size: [in] size of TA binary in bytes * @ta_handle: [out] return handle of the loaded TA */ struct tee_cmd_load_ta { u32 low_addr; u32 hi_addr; u32 size; u32 ta_handle; }; /** * struct tee_cmd_unload_ta - command to unload TA binary from TEE environment * @ta_handle: [in] handle of the loaded TA to be unloaded */ struct tee_cmd_unload_ta { u32 ta_handle; }; /** * struct tee_cmd_open_session - command to call TA_OpenSessionEntryPoint in TA * @ta_handle: [in] handle of the loaded TA * @session_info: [out] pointer to TA allocated session data * @op: [in/out] operation parameters * @return_origin: [out] origin of return code after TEE processing */ struct tee_cmd_open_session { u32 ta_handle; u32 session_info; struct tee_operation op; u32 return_origin; }; /** * struct tee_cmd_close_session - command to call TA_CloseSessionEntryPoint() * in TA * @ta_handle: [in] handle of the loaded TA * @session_info: [in] pointer to TA allocated session data */ struct tee_cmd_close_session { u32 ta_handle; u32 session_info; }; /** * struct tee_cmd_invoke_cmd - command to call TA_InvokeCommandEntryPoint() in * TA * @ta_handle: [in] handle of the loaded TA * @cmd_id: [in] TA command ID * @session_info: [in] pointer to TA allocated session data * @op: [in/out] operation parameters * @return_origin: [out] origin of return code after TEE processing */ struct tee_cmd_invoke_cmd { u32 ta_handle; u32 cmd_id; u32 session_info; struct tee_operation op; u32 return_origin; }; #endif /*AMDTEE_IF_H*/ |