1 /* $NetBSD: cons.c,v 1.12 2011/02/08 20:20:10 rmind Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: cons.c 1.7 92/02/28 37 * 38 * @(#)cons.c 8.1 (Berkeley) 6/10/93 39 */ 40 41 #include <lib/libsa/stand.h> 42 #include <sys/param.h> 43 #include "boot.h" 44 #include "cons.h" 45 46 #ifdef CONS_BE 47 void becnprobe(struct consdev *); 48 void becninit(struct consdev *); 49 void becnputchar(void *, register int); 50 int becngetchar(void *); 51 int becnscan(void *); 52 #endif 53 54 #ifdef CONS_VGA 55 void vgacnprobe(struct consdev *); 56 void vgacninit(struct consdev *); 57 void vgacnputchar(void *, register int); 58 int vgacngetchar(void *); 59 int vgacnscan(void *); 60 #endif 61 62 #ifdef CONS_SERIAL 63 void siocnprobe(struct consdev *); 64 void siocninit(struct consdev *); 65 void siocnputchar(void *, register int); 66 int siocngetchar(void *); 67 int siocnscan(void *); 68 # include "ns16550.h" 69 # ifndef COMPORT 70 # define COMPORT COM1 71 # endif 72 # ifndef COMSPEED 73 # define COMSPEED 9600 74 # endif 75 #endif 76 77 struct consdev constab[] = { 78 #ifdef CONS_BE 79 { "be", 0xd0000000, 0, 80 becnprobe, becninit, becngetchar, becnputchar, becnscan }, 81 #endif 82 #ifdef CONS_VGA 83 { "vga", 0xc0000000, 0, 84 vgacnprobe, vgacninit, vgacngetchar, vgacnputchar, vgacnscan }, 85 #endif 86 #ifdef CONS_SERIAL 87 { "com", COMPORT, COMSPEED, 88 siocnprobe, siocninit, siocngetchar, siocnputchar, siocnscan }, 89 #endif 90 { 0 } 91 }; 92 93 struct consdev *cn_tab; 94 95 char * 96 cninit(int *addr, int *speed) 97 { 98 register struct consdev *cp; 99 100 cn_tab = NULL; 101 for (cp = constab; cp->cn_probe; cp++) { 102 (*cp->cn_probe)(cp); 103 if (cp->cn_pri > CN_DEAD && 104 (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) 105 cn_tab = cp; 106 } 107 if (cn_tab) { 108 (*cn_tab->cn_init)(cn_tab); 109 *addr = cn_tab->address; 110 *speed = cn_tab->speed; 111 return (cn_tab->cn_name); 112 } 113 114 return (NULL); 115 } 116 117 int 118 cngetc(void) 119 { 120 121 if (cn_tab) 122 return ((*cn_tab->cn_getc)(cn_tab->cn_dev)); 123 return (0); 124 } 125 126 void 127 cnputc(int c) 128 { 129 130 if (cn_tab) 131 (*cn_tab->cn_putc)(cn_tab->cn_dev, c); 132 } 133 134 int 135 cnscan(void) 136 { 137 138 if (cn_tab) 139 return ((*cn_tab->cn_scan)(cn_tab->cn_dev)); 140 return -1; 141 } 142 143 #ifdef CONS_BE 144 /* 145 * BeBox default console 146 */ 147 void 148 becnprobe(struct consdev *cp) 149 { 150 151 cp->cn_pri = CN_INTERNAL; 152 } 153 154 void 155 becninit(struct consdev *cp) 156 { 157 158 video_init((u_char *)cp->address); 159 kbdreset(); 160 kbd(1); /* read out ugly data */ 161 } 162 163 int 164 becngetchar(void *dev) 165 { 166 167 return (kbd_getc()); 168 } 169 170 void 171 becnputchar(void *dev, register int c) 172 { 173 174 video_putc(c); 175 } 176 177 int 178 becnscan(void *dev) 179 { 180 181 return (kbd(1)); 182 } 183 #endif /* CONS_BE */ 184 185 #ifdef CONS_VGA 186 /* 187 * VGA console 188 */ 189 void 190 vgacnprobe(struct consdev *cp) 191 { 192 193 cp->cn_pri = CN_NORMAL; 194 } 195 196 void 197 vgacninit(struct consdev *cp) 198 { 199 200 vga_reset((u_char *)cp->address); 201 vga_init((u_char *)cp->address); 202 kbdreset(); 203 } 204 205 int 206 vgacngetchar(void *dev) 207 { 208 209 return (kbd_getc()); 210 } 211 212 void 213 vgacnputchar(void *dev, register int c) 214 { 215 216 vga_putc(c); 217 } 218 219 int 220 vgacnscan(void *dev) 221 { 222 223 return (kbd(1)); 224 } 225 #endif /* CONS_VGA */ 226 227 #ifdef CONS_SERIAL 228 /* 229 * serial console 230 */ 231 void 232 siocnprobe(struct consdev *cp) 233 { 234 235 cp->cn_pri = CN_REMOTE; 236 } 237 238 void 239 siocninit(struct consdev *cp) 240 { 241 242 cp->cn_dev = (void *)NS16550_init(cp->address, cp->speed); 243 } 244 245 int 246 siocngetchar(void *dev) 247 { 248 249 return (NS16550_getc((struct NS16550 *)dev)); 250 } 251 252 void 253 siocnputchar(void *dev, register int c) 254 { 255 256 if (c == '\n') 257 NS16550_putc((struct NS16550 *)dev, '\r'); 258 NS16550_putc((struct NS16550 *)dev, c); 259 } 260 261 int 262 siocnscan(void *dev) 263 { 264 265 return (NS16550_scankbd((struct NS16550 *)dev)); 266 } 267 #endif /* CONS_SERIAL */ 268