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_vec != NULL); 26 27 switch (msg->header.protocol_ver) { 28 case RSE_COMMS_PROTOCOL_EMBED: 29 status = rse_protocol_embed_serialize_msg(handle, type, in_vec, in_len, out_vec, 30 out_len, &msg->msg.embed, msg_len); 31 if (status != PSA_SUCCESS) { 32 return status; 33 } 34 break; 35 case RSE_COMMS_PROTOCOL_POINTER_ACCESS: 36 status = rse_protocol_pointer_access_serialize_msg(handle, type, in_vec, in_len, 37 out_vec, out_len, 38 &msg->msg.pointer_access, 39 msg_len); 40 if (status != PSA_SUCCESS) { 41 return status; 42 } 43 break; 44 default: 45 return PSA_ERROR_NOT_SUPPORTED; 46 } 47 48 *msg_len += sizeof(struct serialized_rse_comms_header_t); 49 50 return PSA_SUCCESS; 51 } 52 53 psa_status_t rse_protocol_deserialize_reply(psa_outvec *out_vec, 54 uint8_t out_len, 55 psa_status_t *return_val, 56 const struct serialized_rse_comms_reply_t *reply, 57 size_t reply_size) 58 { 59 assert(reply != NULL); 60 assert(return_val != NULL); 61 62 switch (reply->header.protocol_ver) { 63 case RSE_COMMS_PROTOCOL_EMBED: 64 return rse_protocol_embed_deserialize_reply(out_vec, out_len, return_val, 65 &reply->reply.embed, reply_size); 66 case RSE_COMMS_PROTOCOL_POINTER_ACCESS: 67 return rse_protocol_pointer_access_deserialize_reply(out_vec, out_len, return_val, 68 &reply->reply.pointer_access, 69 reply_size); 70 default: 71 return PSA_ERROR_NOT_SUPPORTED; 72 } 73 74 return PSA_SUCCESS; 75 } 76