sys/arch/rs6000/stand/boot/cons.c

   1 /*      $NetBSD: cons.c,v 1.1 2007/12/17 19:09:47 garbled Exp $ */
   2
   3 /*
   4  * Copyright (c) 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * the Systems Programming Group of the University of Utah Computer
   9  * Science Department.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * from: Utah Hdr: cons.c 1.7 92/02/28
  36  *
  37  *      @(#)cons.c      8.1 (Berkeley) 6/10/93
  38  */
  39 /*
  40  * Copyright (c) 1988 University of Utah.
  41  *
  42  * This code is derived from software contributed to Berkeley by
  43  * the Systems Programming Group of the University of Utah Computer
  44  * Science Department.
  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. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *      This product includes software developed by the University of
  57  *      California, Berkeley and its contributors.
  58  * 4. Neither the name of the University nor the names of its contributors
  59  *    may be used to endorse or promote products derived from this software
  60  *    without specific prior written permission.
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  72  * SUCH DAMAGE.
  73  *
  74  * from: Utah Hdr: cons.c 1.7 92/02/28
  75  *
  76  *      @(#)cons.c      8.1 (Berkeley) 6/10/93
  77  */
  78
  79 #include <lib/libsa/stand.h>
  80
  81 #include "boot.h"
  82 #include "cons.h"
  83
  84 #ifdef CONS_SERIAL
  85 void siocnprobe(struct consdev *);
  86 void siocninit(struct consdev *);
  87 void siocnputchar(void *, int);
  88 int siocngetchar(void *);
  89 int siocnscan(void *);
  90 # include "ns16550.h"
  91 # ifndef COMPORT
  92 #  define COMPORT COM1
  93 # endif
  94 # ifndef COMSPEED
  95 #  define COMSPEED 9600
  96 # endif
  97 #endif
  98
  99 struct consdev constab[] = {
 100 #ifdef CONS_SERIAL
 101         { "com", COMPORT, COMSPEED,
 102             siocnprobe, siocninit, siocngetchar, siocnputchar, siocnscan },
 103 #endif
 104         { 0 }
 105 };
 106
 107 struct consdev *cn_tab;
 108
 109 char *
 110 cninit(int *addr, int *speed)
 111 {
 112         register struct consdev *cp;
 113
 114         cn_tab = NULL;
 115         for (cp = constab; cp->cn_probe; cp++) {
 116                 (*cp->cn_probe)(cp);
 117                 if (cp->cn_pri > CN_DEAD &&
 118                     (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
 119                         cn_tab = cp;
 120         }
 121         if (cn_tab) {
 122                 (*cn_tab->cn_init)(cn_tab);
 123                 *addr = cn_tab->address;
 124                 *speed = cn_tab->speed;
 125                 return (cn_tab->cn_name);
 126         }
 127
 128         return (NULL);
 129 }
 130
 131 int
 132 cngetc(void)
 133 {
 134
 135         if (cn_tab)
 136                 return ((*cn_tab->cn_getc)(cn_tab->cn_dev));
 137         return (0);
 138 }
 139
 140 void
 141 cnputc(int c)
 142 {
 143
 144         if (cn_tab)
 145                 (*cn_tab->cn_putc)(cn_tab->cn_dev, c);
 146 }
 147
 148 int
 149 cnscan(void)
 150 {
 151
 152         if (cn_tab)
 153                 return ((*cn_tab->cn_scan)(cn_tab->cn_dev));
 154         return -1;
 155 }
 156
 157 #ifdef CONS_SERIAL
 158 /*
 159  * serial console
 160  */
 161 void
 162 siocnprobe(struct consdev *cp)
 163 {
 164
 165         cp->cn_pri = CN_REMOTE;
 166 }
 167
 168 void
 169 siocninit(struct consdev *cp)
 170 {
 171
 172         cp->cn_dev = (void *)NS16550_init(cp->address, cp->speed);
 173 }
 174
 175 int
 176 siocngetchar(void *dev)
 177 {
 178
 179         return (NS16550_getc((struct NS16550 *)dev));
 180 }
 181
 182 void
 183 siocnputchar(void *dev, register int c)
 184 {
 185
 186         if (c == '\n')
 187                 NS16550_putc((struct NS16550 *)dev, '\r');
 188         NS16550_putc((struct NS16550 *)dev, c);
 189 }
 190
 191 int
 192 siocnscan(void *dev)
 193 {
 194
 195         return (NS16550_scankbd((struct NS16550 *)dev));
 196 }
 197 #endif /* CONS_SERIAL */