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168 lines
3.1 KiB
C
168 lines
3.1 KiB
C
/* $NetBSD: cons.c,v 1.2 2014/03/26 17:47:10 christos Exp $ */
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/*-
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* Copyright (c) 2005 NONAKA Kimihiro
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <lib/libsa/stand.h>
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#include <lib/libkern/libkern.h>
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#include <sys/bootblock.h>
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#include "boot.h"
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#include "cons.h"
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#ifndef CONSPEED
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#define CONSPEED 9600
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#endif
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#define POLL_FREQ 10
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extern struct landisk_boot_params boot_params;
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static int consdev = CONSDEV_BIOSCONS;
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/*ARGSUSED*/
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int
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cninit(int dev)
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{
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switch (dev) {
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default:
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case CONSDEV_BIOSCONS:
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break;
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case CONSDEV_SCIF:
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switch (boot_params.bp_conspeed) {
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default:
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scif_init(CONSPEED);
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break;
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case 9600:
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#if 0
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case 19200:
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case 38400:
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case 57600:
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case 115200:
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#endif
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scif_init(boot_params.bp_conspeed);
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break;
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}
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break;
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}
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consdev = dev;
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return (0);
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}
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int
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getchar(void)
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{
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switch (consdev) {
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default:
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case CONSDEV_BIOSCONS:
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return bioscons_getc();
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case CONSDEV_SCIF:
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return scif_getc();
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}
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}
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void
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putchar(int c)
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{
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switch (consdev) {
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default:
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case CONSDEV_BIOSCONS:
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bioscons_putc(c);
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break;
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case CONSDEV_SCIF:
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if (c == '\n')
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scif_putc('\r');
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scif_putc(c);
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break;
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}
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}
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/*ARGSUSED*/
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int
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iskey(int intr)
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{
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switch (consdev) {
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default:
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case CONSDEV_BIOSCONS:
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return scif_status2();
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case CONSDEV_SCIF:
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return scif_status();
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}
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}
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char
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awaitkey(int timeout, int tell)
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{
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int i;
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char c = 0;
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i = timeout * POLL_FREQ;
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for (;;) {
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if (tell && (i % POLL_FREQ) == 0) {
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char numbuf[20];
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int len, j;
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len = snprintf(numbuf, sizeof(numbuf),
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"%d ", i / POLL_FREQ);
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for (j = 0; j < len; j++)
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numbuf[len + j] = '\b';
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numbuf[len + j] = '\0';
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printf(numbuf);
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}
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if (iskey(1)) {
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/* flush input buffer */
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while (iskey(0))
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c = getchar();
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if (c == 0)
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c = -1;
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goto out;
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}
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if (i--) {
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delay(1000 / POLL_FREQ);
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} else {
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break;
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}
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}
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out:
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if (tell)
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printf("0 \n");
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return (c);
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}
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