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/*
* 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;
}
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