63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/* $NetBSD: clock.c,v 1.2 2014/02/24 22:31:56 christos Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code was written by Alessandro Forin and Neil Pittman
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* at Microsoft Research and contributed to The NetBSD Foundation
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* by Microsoft Corporation.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <machine/emipsreg.h>
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#include <lib/libsa/net.h>
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#include <stand/common/common.h>
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satime_t
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getsecs(void)
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{
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struct _Tc *Tc = (struct _Tc *)TIMER_DEFAULT_ADDRESS;
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uint64_t now;
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static int inited = 0;
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if (!inited) {
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inited = 1;
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Tc->Control = TCCT_ENABLE;
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}
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/* starts from 0 at powerup, and counts up */
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now = Tc->FreeRunning;
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#if 0
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/* requires full 64bit math support */
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now = now / 10*1000*1000;
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#else
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/* good nuf */
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now = now >> 23;
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#endif
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return (long) now;
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}
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