1/*      $NetBSD: clock.c,v 1.1 2011/01/26 01:18:54 pooka Exp $ */
2
3/*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 * Copyright (c) 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code was written by Alessandro Forin and Neil Pittman
9 * at Microsoft Research and contributed to The NetBSD Foundation
10 * by Microsoft Corporation.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/types.h>
35#include <machine/emipsreg.h>
36#include <lib/libsa/net.h>
37
38#include <stand/common/common.h>
39
40satime_t
41getsecs(void)
42{
43    struct _Tc *Tc = (struct _Tc *)TIMER_DEFAULT_ADDRESS;
44	uint64_t now;
45    static int inited = 0;
46
47    if (!inited) {
48        inited = 1;
49        Tc->Control = TCCT_ENABLE;
50    }
51
52    /* starts from 0 at powerup, and counts up */
53	now = Tc->FreeRunning;
54#if 0
55    /* requires full 64bit math support */
56    now = now / 10*1000*1000;
57#else
58    /* good nuf */
59    now = now >> 23;
60#endif
61    return (long) now;
62}
63