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      1 /*	$NetBSD: cons.c,v 1.2 2014/03/26 17:47:10 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 NONAKA Kimihiro
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <lib/libsa/stand.h>
     30 #include <lib/libkern/libkern.h>
     31 
     32 #include <sys/bootblock.h>
     33 
     34 #include "boot.h"
     35 #include "cons.h"
     36 
     37 #ifndef	CONSPEED
     38 #define	CONSPEED	9600
     39 #endif
     40 
     41 #define	POLL_FREQ	10
     42 
     43 extern struct landisk_boot_params boot_params;
     44 
     45 static int consdev = CONSDEV_BIOSCONS;
     46 
     47 /*ARGSUSED*/
     48 int
     49 cninit(int dev)
     50 {
     51 
     52 	switch (dev) {
     53 	default:
     54 	case CONSDEV_BIOSCONS:
     55 		break;
     56 
     57 	case CONSDEV_SCIF:
     58 		switch (boot_params.bp_conspeed) {
     59 		default:
     60 			scif_init(CONSPEED);
     61 			break;
     62 
     63 		case 9600:
     64 #if 0
     65 		case 19200:
     66 		case 38400:
     67 		case 57600:
     68 		case 115200:
     69 #endif
     70 			scif_init(boot_params.bp_conspeed);
     71 			break;
     72 		}
     73 		break;
     74 	}
     75 	consdev = dev;
     76 
     77 	return (0);
     78 }
     79 
     80 int
     81 getchar(void)
     82 {
     83 
     84 	switch (consdev) {
     85 	default:
     86 	case CONSDEV_BIOSCONS:
     87 		return bioscons_getc();
     88 
     89 	case CONSDEV_SCIF:
     90 		return scif_getc();
     91 	}
     92 }
     93 
     94 void
     95 putchar(int c)
     96 {
     97 
     98 	switch (consdev) {
     99 	default:
    100 	case CONSDEV_BIOSCONS:
    101 		bioscons_putc(c);
    102 		break;
    103 
    104 	case CONSDEV_SCIF:
    105 		if (c == '\n')
    106 			scif_putc('\r');
    107 		scif_putc(c);
    108 		break;
    109 	}
    110 }
    111 
    112 /*ARGSUSED*/
    113 int
    114 iskey(int intr)
    115 {
    116 
    117 	switch (consdev) {
    118 	default:
    119 	case CONSDEV_BIOSCONS:
    120 		return scif_status2();
    121 
    122 	case CONSDEV_SCIF:
    123 		return scif_status();
    124 	}
    125 }
    126 
    127 char
    128 awaitkey(int timeout, int tell)
    129 {
    130 	int i;
    131 	char c = 0;
    132 
    133 	i = timeout * POLL_FREQ;
    134 
    135 	for (;;) {
    136 		if (tell && (i % POLL_FREQ) == 0) {
    137 			char numbuf[20];
    138 			int len, j;
    139 
    140 			len = snprintf(numbuf, sizeof(numbuf),
    141 			    "%d ", i / POLL_FREQ);
    142 			for (j = 0; j < len; j++)
    143 				numbuf[len + j] = '\b';
    144 			numbuf[len + j] = '\0';
    145 			printf(numbuf);
    146 		}
    147 		if (iskey(1)) {
    148 			/* flush input buffer */
    149 			while (iskey(0))
    150 				c = getchar();
    151 			if (c == 0)
    152 				c = -1;
    153 			goto out;
    154 		}
    155 		if (i--) {
    156 			delay(1000 / POLL_FREQ);
    157 		} else {
    158 			break;
    159 		}
    160 	}
    161 
    162 out:
    163 	if (tell)
    164 		printf("0 \n");
    165 
    166 	return (c);
    167 }
    168