66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
|
|
* linux/arch/h8300/kernel/time.c
|
|
*
|
|
* Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
*
|
|
* Copied/hacked from:
|
|
*
|
|
* linux/arch/m68k/kernel/time.c
|
|
*
|
|
* Copyright (C) 1991, 1992, 1995 Linus Torvalds
|
|
*
|
|
* This file contains the m68k-specific time handling details.
|
|
* Most of the stuff is located in the machine specific files.
|
|
*
|
|
* 1997-09-10 Updated NTP code according to technical memorandum Jan '96
|
|
* "A Kernel Model for Precision Timekeeping" by Dave Mills
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/module.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/param.h>
|
|
#include <linux/string.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/timex.h>
|
|
#include <linux/profile.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/timer.h>
|
|
|
|
#define TICK_SIZE (tick_nsec / 1000)
|
|
|
|
void h8300_timer_tick(void)
|
|
{
|
|
if (current->pid)
|
|
profile_tick(CPU_PROFILING);
|
|
xtime_update(1);
|
|
update_process_times(user_mode(get_irq_regs()));
|
|
}
|
|
|
|
void read_persistent_clock(struct timespec *ts)
|
|
{
|
|
unsigned int year, mon, day, hour, min, sec;
|
|
|
|
/* FIX by dqg : Set to zero for platforms that don't have tod */
|
|
/* without this time is undefined and can overflow time_t, causing */
|
|
/* very strange errors */
|
|
year = 1980;
|
|
mon = day = 1;
|
|
hour = min = sec = 0;
|
|
#ifdef CONFIG_H8300_GETTOD
|
|
h8300_gettod (&year, &mon, &day, &hour, &min, &sec);
|
|
#endif
|
|
if ((year += 1900) < 1970)
|
|
year += 100;
|
|
ts->tv_sec = mktime(year, mon, day, hour, min, sec);
|
|
ts->tv_nsec = 0;
|
|
}
|
|
|
|
void __init time_init(void)
|
|
{
|
|
|
|
h8300_timer_setup();
|
|
}
|