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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* This file contains the hardware specific portions of the TTY driver
* for the serial ports on the csb350.
*/
/*
* COPYRIGHT (c) 1989-2000.
* On-Line Applications Research Corporation (OAR).
*
* 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.
*/
#include <bsp.h>
#include <bsp/console-polled.h>
#include <rtems/libio.h>
#include <libcpu/au1x00.h>
/*
* console_initialize_hardware
*
* This routine initializes the console hardware.
*
*/
void console_initialize_hardware(void)
{
uart0->fifoctrl = 0xf1; /* enable fifo, max sizes */
au_sync();
}
/*
* console_outbyte_polled
*
* This routine transmits a character using polling.
*/
void console_outbyte_polled(
int port,
char ch
)
{
/* wait for the fifo to make room */
while ((uart0->linestat & 0x20) == 0) {
continue;
}
uart0->txdata = ch;
au_sync();
}
/*
* console_inbyte_nonblocking
*
* This routine polls for a character.
*/
int console_inbyte_nonblocking(
int port
)
{
unsigned char c;
if (uart0->linestat & 1) {
c = (char)uart0->rxdata;
return c;
} else {
return -1;
}
}
#include <rtems/bspIo.h>
static void csb250_output_char(char c)
{
console_outbyte_polled( 0, c );
}
static int csb250_get_char(void)
{
return console_inbyte_nonblocking(0);
}
BSP_output_char_function_type BSP_output_char = csb250_output_char;
BSP_polling_getchar_function_type BSP_poll_char = csb250_get_char;
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