malta/console/printk_support.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /**
0004  *  @file
0005  *
0006  *  This file contains a stub for the required printk support.
0007  */
0008
0009 /*
0010  *  COPYRIGHT (c) 1989-2012.
0011  *  On-Line Applications Research Corporation (OAR).
0012  *
0013  * Redistribution and use in source and binary forms, with or without
0014  * modification, are permitted provided that the following conditions
0015  * are met:
0016  * 1. Redistributions of source code must retain the above copyright
0017  *    notice, this list of conditions and the following disclaimer.
0018  * 2. Redistributions in binary form must reproduce the above copyright
0019  *    notice, this list of conditions and the following disclaimer in the
0020  *    documentation and/or other materials provided with the distribution.
0021  *
0022  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0023  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0024  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0025  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0026  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0027  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0028  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0029  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0030  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0031  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0032  * POSSIBILITY OF SUCH DAMAGE.
0033  */
0034
0035 #include <rtems.h>
0036 #include <rtems/bspIo.h>
0037 #include <bsp.h>
0038 #include <libchip/serial.h>
0039 #include <libchip/ns16550.h>
0040
0041 rtems_device_minor_number         BSPPrintkPort = 0;
0042
0043 void BSP_com_outch(char ch);
0044 int BSP_com_inch( void );
0045
0046 /*
0047  *  Following assume all are ns16650
0048  */
0049 void BSP_com_outch(char ch)
0050 {
0051   console_tbl                   *cptr;
0052
0053   cptr = &Console_Configuration_Ports[BSPPrintkPort];
0054
0055   return ns16550_outch_polled( cptr, ch );
0056 }
0057
0058 int BSP_com_inch( void )
0059 {
0060   int           result;
0061   console_tbl   *cptr;
0062
0063   cptr = &Console_Configuration_Ports[BSPPrintkPort];
0064
0065   do {
0066     result = ns16550_inch_polled( cptr );
0067   } while (result == -1);
0068
0069   return result;
0070 }
0071
0072 BSP_output_char_function_type     BSP_output_char = BSP_com_outch;
0073 BSP_polling_getchar_function_type BSP_poll_char = BSP_com_inch;