mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-08-14 16:40:59 -04:00
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/* $NetBSD: clock.c,v 1.4 2009/01/12 11:32:43 tsutsui 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/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;
|
|
}
|