dev/serial/console-termios-init.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (C) 2014, 2016 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #include <bsp/console-termios.h>
0029 #include <bsp/fatal.h>
0030
0031 #include <rtems/console.h>
0032
0033 #include <unistd.h>
0034
0035 bool console_device_probe_default(rtems_termios_device_context *context)
0036 {
0037   (void) context;
0038
0039   return true;
0040 }
0041
0042 rtems_device_driver console_initialize(
0043   rtems_device_major_number  major,
0044   rtems_device_minor_number  minor,
0045   void                      *arg
0046 )
0047 {
0048   bool console_device_done = false;
0049
0050   rtems_termios_initialize();
0051
0052   for ( minor = 0; minor < console_device_count; ++minor ) {
0053     const console_device *ctx = &console_device_table[ minor ];
0054     rtems_status_code     sc;
0055
0056     if ( ( *ctx->probe )( ctx->context ) ) {
0057       sc = rtems_termios_device_install(
0058         ctx->device_file,
0059         ctx->handler,
0060         ctx->flow,
0061         ctx->context
0062       );
0063       if ( sc != RTEMS_SUCCESSFUL ) {
0064         bsp_fatal( BSP_FATAL_CONSOLE_INSTALL_0 );
0065       }
0066
0067       if ( !console_device_done ) {
0068         console_device_done = true;
0069
0070         if ( link( ctx->device_file, CONSOLE_DEVICE_NAME ) != 0 ) {
0071           bsp_fatal( BSP_FATAL_CONSOLE_INSTALL_1 );
0072         }
0073       }
0074     }
0075   }
0076
0077   return RTEMS_SUCCESSFUL;
0078 }