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

   1 /*      $NetBSD: cons.c,v 1.6 2006/04/13 18:46:46 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_VGA
  85 void vgacnprobe(struct consdev *);
  86 void vgacninit(struct consdev *);
  87 void vgacnputchar(void *, int);
  88 int vgacngetchar(void *);
  89 int vgacnscan(void *);
  90 #endif
  91
  92 #ifdef CONS_SERIAL
  93 void siocnprobe(struct consdev *);
  94 void siocninit(struct consdev *);
  95 void siocnputchar(void *, int);
  96 int siocngetchar(void *);
  97 int siocnscan(void *);
  98 # include "ns16550.h"
  99 # ifndef COMPORT
 100 #  define COMPORT COM1
 101 # endif
 102 # ifndef COMSPEED
 103 #  define COMSPEED 9600
 104 # endif
 105 #endif
 106
 107 struct consdev constab[] = {
 108 #ifdef CONS_VGA
 109         { "vga", 0xc0000000, 0,
 110             vgacnprobe, vgacninit, vgacngetchar, vgacnputchar, vgacnscan },
 111 #endif
 112 #ifdef CONS_SERIAL
 113         { "com", COMPORT, COMSPEED,
 114             siocnprobe, siocninit, siocngetchar, siocnputchar, siocnscan },
 115 #endif
 116         { 0 }
 117 };
 118
 119 struct consdev *cn_tab;
 120
 121 char *
 122 cninit(int *addr, int *speed)
 123 {
 124         register struct consdev *cp;
 125
 126         cn_tab = NULL;
 127         for (cp = constab; cp->cn_probe; cp++) {
 128                 (*cp->cn_probe)(cp);
 129                 if (cp->cn_pri > CN_DEAD &&
 130                     (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
 131                         cn_tab = cp;
 132         }
 133         if (cn_tab) {
 134                 (*cn_tab->cn_init)(cn_tab);
 135                 *addr = cn_tab->address;
 136                 *speed = cn_tab->speed;
 137                 return (cn_tab->cn_name);
 138         }
 139
 140         return (NULL);
 141 }
 142
 143 int
 144 cngetc(void)
 145 {
 146
 147         if (cn_tab)
 148                 return ((*cn_tab->cn_getc)(cn_tab->cn_dev));
 149         return (0);
 150 }
 151
 152 void
 153 cnputc(int c)
 154 {
 155
 156         if (cn_tab)
 157                 (*cn_tab->cn_putc)(cn_tab->cn_dev, c);
 158 }
 159
 160 int
 161 cnscan(void)
 162 {
 163
 164         if (cn_tab)
 165                 return ((*cn_tab->cn_scan)(cn_tab->cn_dev));
 166         return -1;
 167 }
 168
 169 #ifdef CONS_VGA
 170 /*
 171  * VGA console
 172  */
 173 void
 174 vgacnprobe(struct consdev *cp)
 175 {
 176         cp->cn_pri = CN_NORMAL;
 177 }
 178
 179 void
 180 vgacninit(struct consdev *cp)
 181 {
 182
 183         vga_init((u_char *)cp->address);
 184         kbdreset();
 185 }
 186
 187 int
 188 vgacngetchar(void *dev)
 189 {
 190
 191         return (kbd_getc());
 192 }
 193
 194 void
 195 vgacnputchar(void *dev, register int c)
 196 {
 197
 198         vga_putc(c);
 199 }
 200
 201 int
 202 vgacnscan(void *dev)
 203 {
 204
 205         return (kbd(1));
 206 }
 207 #endif /* CONS_VGA */
 208
 209 #ifdef CONS_SERIAL
 210 /*
 211  * serial console
 212  */
 213 void
 214 siocnprobe(struct consdev *cp)
 215 {
 216
 217         cp->cn_pri = CN_REMOTE;
 218 }
 219
 220 void
 221 siocninit(struct consdev *cp)
 222 {
 223
 224         cp->cn_dev = (void *)NS16550_init(cp->address, cp->speed);
 225 }
 226
 227 int
 228 siocngetchar(void *dev)
 229 {
 230
 231         return (NS16550_getc((struct NS16550 *)dev));
 232 }
 233
 234 void
 235 siocnputchar(void *dev, register int c)
 236 {
 237
 238         if (c == '\n')
 239                 NS16550_putc((struct NS16550 *)dev, '\r');
 240         NS16550_putc((struct NS16550 *)dev, c);
 241 }
 242
 243 int
 244 siocnscan(void *dev)
 245 {
 246
 247         return (NS16550_scankbd((struct NS16550 *)dev));
 248 }
 249 #endif /* CONS_SERIAL */