forked from Imagelibrary/rtems
105 lines
2.7 KiB
C
105 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* This file contains the hardware specific portions of the TTY driver
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* for the serial ports on the csb350.
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*/
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/*
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* COPYRIGHT (c) 1989-2000.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <bsp.h>
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#include <bsp/console-polled.h>
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#include <rtems/libio.h>
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#include <libcpu/au1x00.h>
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/*
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* console_initialize_hardware
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*
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* This routine initializes the console hardware.
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*
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*/
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void console_initialize_hardware(void)
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{
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uart0->fifoctrl = 0xf1; /* enable fifo, max sizes */
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au_sync();
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}
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/*
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* console_outbyte_polled
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*
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* This routine transmits a character using polling.
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*/
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void console_outbyte_polled(
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int port,
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char ch
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)
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{
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/* wait for the fifo to make room */
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while ((uart0->linestat & 0x20) == 0) {
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continue;
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}
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uart0->txdata = ch;
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au_sync();
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}
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/*
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* console_inbyte_nonblocking
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*
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* This routine polls for a character.
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*/
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int console_inbyte_nonblocking(
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int port
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)
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{
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unsigned char c;
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if (uart0->linestat & 1) {
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c = (char)uart0->rxdata;
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return c;
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} else {
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return -1;
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}
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}
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#include <rtems/bspIo.h>
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static void csb250_output_char(char c)
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{
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console_outbyte_polled( 0, c );
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}
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static int csb250_get_char(void)
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{
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return console_inbyte_nonblocking(0);
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}
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BSP_output_char_function_type BSP_output_char = csb250_output_char;
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BSP_polling_getchar_function_type BSP_poll_char = csb250_get_char;
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