1/*
2 *  linux/arch/cris/kernel/time.c
3 *
4 *  Copyright (C) 1991, 1992, 1995  Linus Torvalds
5 *  Copyright (C) 1999, 2000, 2001 Axis Communications AB
6 *
7 * 1994-07-02    Alan Modra
8 *	fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
9 * 1995-03-26    Markus Kuhn
10 *      fixed 500 ms bug at call to set_rtc_mmss, fixed DS12887
11 *      precision CMOS clock update
12 * 1996-05-03    Ingo Molnar
13 *      fixed time warps in do_[slow|fast]_gettimeoffset()
14 * 1997-09-10	Updated NTP code according to technical memorandum Jan '96
15 *		"A Kernel Model for Precision Timekeeping" by Dave Mills
16 *
17 * Linux/CRIS specific code:
18 *
19 * Authors:    Bjorn Wesen
20 *             Johan Adolfsson
21 *
22 */
23
24#include <linux/errno.h>
25#include <linux/module.h>
26#include <linux/param.h>
27#include <linux/jiffies.h>
28#include <linux/bcd.h>
29#include <linux/timex.h>
30#include <linux/init.h>
31#include <linux/profile.h>
32#include <linux/sched.h>	/* just for sched_clock() - funny that */
33
34
35#define D(x)
36
37#define TICK_SIZE tick
38
39extern unsigned long loops_per_jiffy; /* init/main.c */
40unsigned long loops_per_usec;
41
42int set_rtc_mmss(unsigned long nowtime)
43{
44	D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
45	return 0;
46}
47
48/* grab the time from the RTC chip */
49unsigned long get_cmos_time(void)
50{
51	return 0;
52}
53
54
55int update_persistent_clock(struct timespec now)
56{
57	return set_rtc_mmss(now.tv_sec);
58}
59
60void read_persistent_clock(struct timespec *ts)
61{
62	ts->tv_sec = 0;
63	ts->tv_nsec = 0;
64}
65
66
67extern void cris_profile_sample(struct pt_regs* regs);
68
69void
70cris_do_profile(struct pt_regs* regs)
71{
72
73#ifdef CONFIG_SYSTEM_PROFILER
74        cris_profile_sample(regs);
75#endif
76
77#ifdef CONFIG_PROFILING
78	profile_tick(CPU_PROFILING);
79#endif
80}
81
82#ifndef CONFIG_GENERIC_SCHED_CLOCK
83unsigned long long sched_clock(void)
84{
85	return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
86		get_ns_in_jiffie();
87}
88#endif
89
90static int
91__init init_udelay(void)
92{
93	loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
94	return 0;
95}
96
97__initcall(init_udelay);
98