/* SPDX-License-Identifier: BSD-2-Clause */

/*
 * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <bsp.h>
#include <rtems/bspIo.h>
#include <rtems/sysinit.h>

#include <stm32h7/hal.h>

static void stm32h7_output_char(char c)
{
  stm32h7_uart_polled_write(&STM32H7_PRINTK_INSTANCE.device, c);
}

static void stm32h7_output_char_init(void)
{
  UART_HandleTypeDef *uart;

  uart = &STM32H7_PRINTK_INSTANCE.uart;
  (void) HAL_UART_Init(uart);
  (void) HAL_UARTEx_SetTxFifoThreshold(uart, UART_TXFIFO_THRESHOLD_1_8);
  (void) HAL_UARTEx_SetRxFifoThreshold(uart, UART_RXFIFO_THRESHOLD_1_8);
  (void) HAL_UARTEx_EnableFifoMode(uart);

  BSP_output_char = stm32h7_output_char;
}

static void stm32h7_output_char_init_early(char c)
{
  stm32h7_output_char_init();
  stm32h7_output_char(c);
}

static int stm32h7_poll_char(void)
{
  return stm32h7_uart_polled_read(&STM32H7_PRINTK_INSTANCE.device);
}

BSP_output_char_function_type BSP_output_char = stm32h7_output_char_init_early;

BSP_polling_getchar_function_type BSP_poll_char = stm32h7_poll_char;

RTEMS_SYSINIT_ITEM(
  stm32h7_output_char_init,
  RTEMS_SYSINIT_BSP_START,
  RTEMS_SYSINIT_ORDER_LAST_BUT_5
);