/*      $NetBSD: cons.c,v 1.2 2014/03/26 17:47:10 christos Exp $        */

/*-
 * Copyright (c) 2005 NONAKA Kimihiro
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>

#include <sys/bootblock.h>

#include "boot.h"
#include "cons.h"

#ifndef CONSPEED
#define CONSPEED        9600
#endif

#define POLL_FREQ       10

extern struct landisk_boot_params boot_params;

static int consdev = CONSDEV_BIOSCONS;

/*ARGSUSED*/
int
cninit(int dev)
{

        switch (dev) {
        default:
        case CONSDEV_BIOSCONS:
                break;

        case CONSDEV_SCIF:
                switch (boot_params.bp_conspeed) {
                default:
                        scif_init(CONSPEED);
                        break;

                case 9600:
#if 0
                case 19200:
                case 38400:
                case 57600:
                case 115200:
#endif
                        scif_init(boot_params.bp_conspeed);
                        break;
                }
                break;
        }
        consdev = dev;

        return (0);
}

int
getchar(void)
{

        switch (consdev) {
        default:
        case CONSDEV_BIOSCONS:
                return bioscons_getc();

        case CONSDEV_SCIF:
                return scif_getc();
        }
}

void
putchar(int c)
{

        switch (consdev) {
        default:
        case CONSDEV_BIOSCONS:
                bioscons_putc(c);
                break;

        case CONSDEV_SCIF:
                if (c == '\n')
                        scif_putc('\r');
                scif_putc(c);
                break;
        }
}

/*ARGSUSED*/
int
iskey(int intr)
{

        switch (consdev) {
        default:
        case CONSDEV_BIOSCONS:
                return scif_status2();

        case CONSDEV_SCIF:
                return scif_status();
        }
}

char
awaitkey(int timeout, int tell)
{
        int i;
        char c = 0;

        i = timeout * POLL_FREQ;

        for (;;) {
                if (tell && (i % POLL_FREQ) == 0) {
                        char numbuf[20];
                        int len, j;

                        len = snprintf(numbuf, sizeof(numbuf),
                            "%d ", i / POLL_FREQ);
                        for (j = 0; j < len; j++)
                                numbuf[len + j] = '\b';
                        numbuf[len + j] = '\0';
                        printf(numbuf);
                }
                if (iskey(1)) {
                        /* flush input buffer */
                        while (iskey(0))
                                c = getchar();
                        if (c == 0)
                                c = -1;
                        goto out;
                }
                if (i--) {
                        delay(1000 / POLL_FREQ);
                } else {
                        break;
                }
        }

out:
        if (tell)
                printf("0 \n");

        return (c);
}