1 /* 2 * Copyright (c) 2022, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 */ 7 #include <assert.h> 8 9 #include <common/debug.h> 10 #include "rse_comms_protocol.h" 11 12 psa_status_t rse_protocol_serialize_msg(psa_handle_t handle, 13 int16_t type, 14 const psa_invec *in_vec, 15 uint8_t in_len, 16 const psa_outvec *out_vec, 17 uint8_t out_len, 18 struct serialized_rse_comms_msg_t *msg, 19 size_t *msg_len) 20 { 21 psa_status_t status; 22 23 assert(msg != NULL); 24 assert(msg_len != NULL); 25 assert((in_len == 0u) || (in_vec != NULL)); 26 assert((out_len == 0u) || (out_vec != NULL)); 27 28 switch (msg->header.protocol_ver) { 29 case RSE_COMMS_PROTOCOL_EMBED: 30 status = rse_protocol_embed_serialize_msg(handle, type, in_vec, in_len, out_vec, 31 out_len, &msg->msg.embed, msg_len); 32 if (status != PSA_SUCCESS) { 33 return status; 34 } 35 break; 36 case RSE_COMMS_PROTOCOL_POINTER_ACCESS: 37 status = rse_protocol_pointer_access_serialize_msg(handle, type, in_vec, in_len, 38 out_vec, out_len, 39 &msg->msg.pointer_access, 40 msg_len); 41 if (status != PSA_SUCCESS) { 42 return status; 43 } 44 break; 45 default: 46 return PSA_ERROR_NOT_SUPPORTED; 47 } 48 49 *msg_len += sizeof(struct serialized_rse_comms_header_t); 50 51 return PSA_SUCCESS; 52 } 53 54 psa_status_t rse_protocol_deserialize_reply(psa_outvec *out_vec, 55 uint8_t out_len, 56 psa_status_t *return_val, 57 const struct serialized_rse_comms_reply_t *reply, 58 size_t reply_size) 59 { 60 assert(reply != NULL); 61 assert(return_val != NULL); 62 63 switch (reply->header.protocol_ver) { 64 case RSE_COMMS_PROTOCOL_EMBED: 65 return rse_protocol_embed_deserialize_reply(out_vec, out_len, return_val, 66 &reply->reply.embed, reply_size); 67 case RSE_COMMS_PROTOCOL_POINTER_ACCESS: 68 return rse_protocol_pointer_access_deserialize_reply(out_vec, out_len, return_val, 69 &reply->reply.pointer_access, 70 reply_size); 71 default: 72 return PSA_ERROR_NOT_SUPPORTED; 73 } 74 75 return PSA_SUCCESS; 76 } 77