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https://github.com/ARM-software/arm-trusted-firmware.git
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36416b1e76
To be able to use RSE comms without MHU, a first step is to disentangle the rse_comms.c file with MHU code direct calls. This is done with the creation of a new file rse_comms_mhu.c. New APIs are created to initialize the mailbox, get max message size and send and receive data. Signed-off-by: Yann Gautier <yann.gautier@st.com> Change-Id: I75dda77e1886beaa6ced6f92c311617125918cfa
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
/*
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* Copyright (c) 2025, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <stdint.h>
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#include <string.h>
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#include <common/debug.h>
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#include <drivers/arm/mhu.h>
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#include <drivers/arm/rse_comms.h>
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size_t rse_mbx_get_max_message_size(void)
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{
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return mhu_get_max_message_size();
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}
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int rse_mbx_send_data(const uint8_t *send_buffer, size_t size)
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{
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enum mhu_error_t err = mhu_send_data(send_buffer, size);
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if (err != MHU_ERR_NONE) {
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ERROR("mhu_send_data err=%d\n", err);
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return -1;
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}
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return 0;
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}
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int rse_mbx_receive_data(uint8_t *receive_buffer, size_t *size)
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{
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enum mhu_error_t err = mhu_receive_data(receive_buffer, size);
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if (err != MHU_ERR_NONE) {
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ERROR("mhu_receive_data err=%d\n", err);
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return -1;
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}
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return 0;
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}
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int rse_mbx_init(const void *init_data)
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{
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enum mhu_error_t err;
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const struct mhu_addr *mbx_addr = (const struct mhu_addr *)init_data;
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err = mhu_init_sender(mbx_addr->sender_base);
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if (err != MHU_ERR_NONE) {
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if (err == MHU_ERR_ALREADY_INIT) {
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INFO("[RSE-COMMS] Host to RSE MHU driver already initialized\n");
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} else {
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ERROR("[RSE-COMMS] Host to RSE MHU driver initialization failed: %d\n",
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err);
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return -1;
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}
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}
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err = mhu_init_receiver(mbx_addr->receiver_base);
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if (err != MHU_ERR_NONE) {
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if (err == MHU_ERR_ALREADY_INIT) {
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INFO("[RSE-COMMS] RSE to Host MHU driver already initialized\n");
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} else {
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ERROR("[RSE-COMMS] RSE to Host MHU driver initialization failed: %d\n",
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err);
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return -1;
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}
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}
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return 0;
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}
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