psim/console/console-io.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  *  This file contains the hardware specific portions of the TTY driver
0005  *  for the simulated serial port on the PowerPC simulator.
0006  */
0007
0008 /*
0009  *  COPYRIGHT (c) 1989-2004.
0010  *  On-Line Applications Research Corporation (OAR).
0011  *
0012  * Redistribution and use in source and binary forms, with or without
0013  * modification, are permitted provided that the following conditions
0014  * are met:
0015  * 1. Redistributions of source code must retain the above copyright
0016  *    notice, this list of conditions and the following disclaimer.
0017  * 2. Redistributions in binary form must reproduce the above copyright
0018  *    notice, this list of conditions and the following disclaimer in the
0019  *    documentation and/or other materials provided with the distribution.
0020  *
0021  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0022  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0023  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0024  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0025  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0026  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0027  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0028  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0029  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0030  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0031  * POSSIBILITY OF SUCH DAMAGE.
0032  */
0033
0034 #include <bsp.h>
0035 #include <bsp/console-polled.h>
0036 #include <rtems/libio.h>
0037 #include <stdlib.h>
0038 #include <assert.h>
0039
0040 /*
0041  *  console_initialize_hardware
0042  *
0043  *  This routine initializes the console hardware.
0044  *
0045  */
0046
0047 void console_initialize_hardware(void)
0048 {
0049 }
0050
0051 /* external prototypes for monitor interface routines */
0052
0053 void outbyte( char );
0054 char inbyte( void );
0055
0056 /*
0057  *  console_outbyte_polled
0058  *
0059  *  This routine transmits a character using polling.
0060  */
0061
0062 void console_outbyte_polled(
0063   int  port,
0064   char ch
0065 )
0066 {
0067   outbyte( ch );
0068 }
0069
0070 /*
0071  *  console_inbyte_nonblocking
0072  *
0073  *  This routine polls for a character.
0074  */
0075
0076 int console_inbyte_nonblocking(
0077   int port
0078 )
0079 {
0080   char c;
0081
0082   c = inbyte();
0083   if (!c)
0084     return -1;
0085   return c;
0086 }
0087
0088 /*
0089  *  To support printk
0090  */
0091
0092 #include <rtems/bspIo.h>
0093
0094 static void PSIM_output_char(char c) { console_outbyte_polled( 0, c ); }
0095
0096 BSP_output_char_function_type           BSP_output_char = PSIM_output_char;
0097 BSP_polling_getchar_function_type       BSP_poll_char = NULL;