37 lines
1.2 KiB
C
37 lines
1.2 KiB
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;
|
|
}
|