[newlib-cygwin.git] / libgloss / arc / iotdk-uart-setup.c

/*
 * iotdk-setup.c -- provide _setup_low_level() to initialize UART.
 *
 * Copyright (c) 2024 Synopsys Inc.
 *
 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions. No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 *
 */

#include "uart-8250.h"

/* Setup UART parameters.  */
int
_setup_low_level (void)
{
  void * const uart_base = (void *) 0x80014000;
  const uint32_t uart_clk_ena = 0xC0;
  const int uart_aux_mapped = 1;
  const uint32_t uart_clock = 16000000;
  const uint32_t uart_baud = 115200;

  /* For this platform we have to enable UART clock before configuring it.   */
  __builtin_arc_sr (0x01, (uint32_t) uart_base + uart_clk_ena);

  _uart_8250_setup (uart_base, uart_aux_mapped, uart_clock, uart_baud);

  return 0;
}
Commit	Line	Data
4f50d9d6 YK	1	/*
	2	* iotdk-setup.c -- provide _setup_low_level() to initialize UART.
	3	*
	4	* Copyright (c) 2024 Synopsys Inc.
	5	*
	6	* The authors hereby grant permission to use, copy, modify, distribute,
	7	* and license this software and its documentation for any purpose, provided
	8	* that existing copyright notices are retained in all copies and that this
	9	* notice is included verbatim in any distributions. No written agreement,
	10	* license, or royalty fee is required for any of the authorized uses.
	11	* Modifications to this software may be copyrighted by their authors
	12	* and need not follow the licensing terms described here, provided that
	13	* the new terms are clearly indicated on the first page of each file where
	14	* they apply.
	15	*
	16	*/
	17
	18	#include "uart-8250.h"
	19
	20	/* Setup UART parameters. */
	21	int
	22	_setup_low_level (void)
	23	{
	24	void * const uart_base = (void *) 0x80014000;
	25	const uint32_t uart_clk_ena = 0xC0;
	26	const int uart_aux_mapped = 1;
	27	const uint32_t uart_clock = 16000000;
	28	const uint32_t uart_baud = 115200;
	29
	30	/* For this platform we have to enable UART clock before configuring it. */
	31	__builtin_arc_sr (0x01, (uint32_t) uart_base + uart_clk_ena);
	32
	33	_uart_8250_setup (uart_base, uart_aux_mapped, uart_clock, uart_baud);
	34
	35	return 0;
	36	}