/*      $NetBSD: clock.c,v 1.5 2014/11/21 00:51:09 christos Exp $       */

/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Manuel Bouyer.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/param.h>
#include <sys/types.h>
#include <lib/libsa/stand.h>
#include <lib/libkern/libkern.h>

#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <lib/libsa/net.h>

#include <dev/clock_subr.h>
#include <dev/ic/mc146818reg.h>

#include <mips/cpuregs.h>

#include "boot.h"

#define DELAY_CALIBRATE 1000

#define MCCLOCK_BASE    0x10000070
#define MCCLOCK_REG     0
#define MCCLOCK_DATA    1

void
delay(int ms)
{
       /*
        * XXX need *real* clock calibration.
        */
       volatile register int N = ms * DELAY_CALIBRATE;
       for (; --N;)
               __insn_barrier();
}

satime_t
getsecs(void)
{
       volatile uint8_t *mcclock_reg, *mcclock_data;
       u_int sec;

       mcclock_reg  = (void *)MIPS_PHYS_TO_KSEG1(MCCLOCK_BASE + MCCLOCK_REG);
       mcclock_data = (void *)MIPS_PHYS_TO_KSEG1(MCCLOCK_BASE + MCCLOCK_DATA);

       *mcclock_reg = MC_SEC;
       sec  = bcdtobin(*mcclock_data);
       *mcclock_reg = MC_MIN;
       sec += bcdtobin(*mcclock_data) * 60;
       *mcclock_reg = MC_HOUR;
       sec += bcdtobin(*mcclock_data) * 60 * 60;

       return (satime_t)sec;
}