Home | History | Annotate | Line # | Download | only in boot
cons.c revision 1.3 
      1 /*	$NetBSD: cons.c,v 1.3 2015/02/14 05:58:02 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992 OMRON Corporation.
      5  *
      6  * This code is derived from software contributed to Berkeley by
      7  * OMRON Corporation.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by the University of
     20  *	California, Berkeley and its contributors.
     21  * 4. Neither the name of the University nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  *	@(#)cons.c	8.1 (Berkeley) 6/10/93
     38  */
     39 /*
     40  * Copyright (c) 1992, 1993
     41  *	The Regents of the University of California.  All rights reserved.
     42  *
     43  * This code is derived from software contributed to Berkeley by
     44  * OMRON Corporation.
     45  *
     46  * Redistribution and use in source and binary forms, with or without
     47  * modification, are permitted provided that the following conditions
     48  * are met:
     49  * 1. Redistributions of source code must retain the above copyright
     50  *    notice, this list of conditions and the following disclaimer.
     51  * 2. Redistributions in binary form must reproduce the above copyright
     52  *    notice, this list of conditions and the following disclaimer in the
     53  *    documentation and/or other materials provided with the distribution.
     54  * 3. Neither the name of the University nor the names of its contributors
     55  *    may be used to endorse or promote products derived from this software
     56  *    without specific prior written permission.
     57  *
     58  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     59  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     60  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     61  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     62  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     63  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     64  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     65  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     66  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     67  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     68  * SUCH DAMAGE.
     69  *
     70  *	@(#)cons.c	8.1 (Berkeley) 6/10/93
     71  */
     72 
     73 #include <sys/param.h>
     74 #include <dev/cons.h>
     75 #include <luna68k/stand/boot/samachdep.h>
     76 
     77 #define NBMC	1
     78 #define NSIO	1
     79 #define NROM	0	/* XXX doesn't work with framebuffer/keyboard? */
     80 
     81 /* XXX - all this could be autoconfig()ed */
     82 
     83 struct	consdev constab[] = {
     84 #if NBMC > 0
     85 	{ bmccnprobe,	bmccninit,	bmccngetc,	bmccnputc },
     86 #endif
     87 #if NSIO > 0
     88 	{ siocnprobe,	siocninit,	siocngetc,	siocnputc },
     89 #endif
     90 #if NROM > 0
     91 	{ romcnprobe,	romcninit,	romcngetc,	romcnputc },
     92 #endif
     93 	{ 0 },
     94 };
     95 /* end XXX */
     96 
     97 struct	tty *constty = 0;	/* virtual console output device */
     98 struct	consdev *cn_tab;	/* physical console device info */
     99 
    100 void
    101 cninit(void)
    102 {
    103 	struct consdev *cp;
    104 
    105 	/*
    106 	 * Collect information about all possible consoles
    107 	 * and find the one with highest priority
    108 	 */
    109 	for (cp = constab; cp->cn_probe; cp++) {
    110 		(*cp->cn_probe)(cp);
    111 		if (cp->cn_pri > CN_DEAD &&
    112 		    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
    113 			cn_tab = cp;
    114 	}
    115 	/*
    116 	 * No console, we can handle it
    117 	 */
    118 	if ((cp = cn_tab) == NULL)
    119 		return;
    120 	/*
    121 	 * Turn on console
    122 	 */
    123 	(*cp->cn_init)(cp);
    124 }
    125 
    126 int
    127 cngetc(void)
    128 {
    129 
    130 	if (cn_tab == NULL)
    131 		return 0;
    132 	return (*cn_tab->cn_getc)(cn_tab->cn_dev);
    133 }
    134 
    135 void
    136 cnputc(int c)
    137 {
    138 
    139 	if (cn_tab == NULL)
    140 		return;
    141 	if (c != 0) {
    142 		(*cn_tab->cn_putc)(cn_tab->cn_dev, c);
    143 		if (c == '\n')
    144 			(*cn_tab->cn_putc)(cn_tab->cn_dev, '\r');
    145 	}
    146 }
    147