1 /* $NetBSD: cons.c,v 1.8 2011/02/08 20:20:22 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 43 #include "boot.h" 44 #include "cons.h" 45 46 #ifdef CONS_VGA 47 void vgacnprobe(struct consdev *); 48 void vgacninit(struct consdev *); 49 void vgacnputchar(void *, int); 50 int vgacngetchar(void *); 51 int vgacnscan(void *); 52 #endif 53 54 #ifdef CONS_SERIAL 55 void siocnprobe(struct consdev *); 56 void siocninit(struct consdev *); 57 void siocnputchar(void *, int); 58 int siocngetchar(void *); 59 int siocnscan(void *); 60 # include "ns16550.h" 61 # ifndef COMPORT 62 # define COMPORT COM1 63 # endif 64 # ifndef COMSPEED 65 # define COMSPEED 9600 66 # endif 67 #endif 68 69 struct consdev constab[] = { 70 #ifdef CONS_VGA 71 { "vga", 0xc0000000, 0, 72 vgacnprobe, vgacninit, vgacngetchar, vgacnputchar, vgacnscan }, 73 #endif 74 #ifdef CONS_SERIAL 75 { "com", COMPORT, COMSPEED, 76 siocnprobe, siocninit, siocngetchar, siocnputchar, siocnscan }, 77 #endif 78 { 0 } 79 }; 80 81 struct consdev *cn_tab; 82 83 char * 84 cninit(int *addr, int *speed) 85 { 86 register struct consdev *cp; 87 88 cn_tab = NULL; 89 for (cp = constab; cp->cn_probe; cp++) { 90 (*cp->cn_probe)(cp); 91 if (cp->cn_pri > CN_DEAD && 92 (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) 93 cn_tab = cp; 94 } 95 if (cn_tab) { 96 (*cn_tab->cn_init)(cn_tab); 97 *addr = cn_tab->address; 98 *speed = cn_tab->speed; 99 return (cn_tab->cn_name); 100 } 101 102 return (NULL); 103 } 104 105 int 106 cngetc(void) 107 { 108 109 if (cn_tab) 110 return ((*cn_tab->cn_getc)(cn_tab->cn_dev)); 111 return (0); 112 } 113 114 void 115 cnputc(int c) 116 { 117 118 if (cn_tab) 119 (*cn_tab->cn_putc)(cn_tab->cn_dev, c); 120 } 121 122 int 123 cnscan(void) 124 { 125 126 if (cn_tab) 127 return ((*cn_tab->cn_scan)(cn_tab->cn_dev)); 128 return -1; 129 } 130 131 #ifdef CONS_VGA 132 /* 133 * VGA console 134 */ 135 void 136 vgacnprobe(struct consdev *cp) 137 { 138 cp->cn_pri = CN_NORMAL; 139 } 140 141 void 142 vgacninit(struct consdev *cp) 143 { 144 145 vga_init((u_char *)cp->address); 146 kbdreset(); 147 } 148 149 int 150 vgacngetchar(void *dev) 151 { 152 153 return (kbd_getc()); 154 } 155 156 void 157 vgacnputchar(void *dev, register int c) 158 { 159 160 vga_putc(c); 161 } 162 163 int 164 vgacnscan(void *dev) 165 { 166 167 return (kbd(1)); 168 } 169 #endif /* CONS_VGA */ 170 171 #ifdef CONS_SERIAL 172 /* 173 * serial console 174 */ 175 void 176 siocnprobe(struct consdev *cp) 177 { 178 179 cp->cn_pri = CN_REMOTE; 180 } 181 182 void 183 siocninit(struct consdev *cp) 184 { 185 186 cp->cn_dev = (void *)NS16550_init(cp->address, cp->speed); 187 } 188 189 int 190 siocngetchar(void *dev) 191 { 192 193 return (NS16550_getc((struct NS16550 *)dev)); 194 } 195 196 void 197 siocnputchar(void *dev, register int c) 198 { 199 200 if (c == '\n') 201 NS16550_putc((struct NS16550 *)dev, '\r'); 202 NS16550_putc((struct NS16550 *)dev, c); 203 } 204 205 int 206 siocnscan(void *dev) 207 { 208 209 return (NS16550_scankbd((struct NS16550 *)dev)); 210 } 211 #endif /* CONS_SERIAL */ 212