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4b37ba90f4
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (21 commits)
m68knommu: convert to using tracehook_report_syscall_*
m68knommu: some boards use fixed phy for FEC ethernet
m68knommu: support the external GPIO based interrupts of the 5272
m68knommu: mask of vector bits in exception word properly
m68knommu: change to new flag variables
m68knommu: Fix MCFUART_TXFIFOSIZE for m548x.
m68knommu: add basic mmu-less m548x support
m68knommu: .gitignore vmlinux.lds
m68knommu: stop using __do_IRQ
m68knommu: rename PT_OFF_VECTOR to PT_OFF_FORMATVEC.
m68knommu: add support for Coldfire 547x/548x interrupt controller
m68k{nommu}: Remove unused DEFINE's from asm-offsets.c
m68knommu: whitespace cleanup in 68328/entry.S
m68knommu: Document supported chips in intc-2.c and intc-simr.c.
m68knommu: fix strace support for 68328/68360
m68knommu: fix default starting date
arch/m68knommu: Removing dead 68328_SERIAL_UART2 config option
arch/m68knommu: Removing dead RAM_{16,32}_MB config option
arch/m68knommu: Removing dead M68KFPU_EMU config option
arch/m68knommu: Removing dead RELOCATE config option
...
92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/*
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* linux/arch/m68knommu/kernel/time.c
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*
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* Copyright (C) 1991, 1992, 1995 Linus Torvalds
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*
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* This file contains the m68k-specific time handling details.
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* Most of the stuff is located in the machine specific files.
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*
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* 1997-09-10 Updated NTP code according to technical memorandum Jan '96
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* "A Kernel Model for Precision Timekeeping" by Dave Mills
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*/
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/param.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/profile.h>
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#include <linux/time.h>
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#include <linux/timex.h>
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#include <asm/machdep.h>
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#include <asm/irq_regs.h>
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#define TICK_SIZE (tick_nsec / 1000)
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static inline int set_rtc_mmss(unsigned long nowtime)
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{
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if (mach_set_clock_mmss)
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return mach_set_clock_mmss (nowtime);
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return -1;
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}
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#ifndef CONFIG_GENERIC_CLOCKEVENTS
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/*
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* timer_interrupt() needs to keep up the real-time clock,
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* as well as call the "do_timer()" routine every clocktick
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*/
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irqreturn_t arch_timer_interrupt(int irq, void *dummy)
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{
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if (current->pid)
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profile_tick(CPU_PROFILING);
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write_seqlock(&xtime_lock);
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do_timer(1);
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write_sequnlock(&xtime_lock);
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update_process_times(user_mode(get_irq_regs()));
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return(IRQ_HANDLED);
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}
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#endif
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static unsigned long read_rtc_mmss(void)
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{
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unsigned int year, mon, day, hour, min, sec;
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if (mach_gettod) {
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mach_gettod(&year, &mon, &day, &hour, &min, &sec);
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if ((year += 1900) < 1970)
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year += 100;
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} else {
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year = 1970;
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mon = day = 1;
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hour = min = sec = 0;
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}
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return mktime(year, mon, day, hour, min, sec);
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}
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void read_persistent_clock(struct timespec *ts)
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{
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ts->tv_sec = read_rtc_mmss();
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ts->tv_nsec = 0;
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}
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int update_persistent_clock(struct timespec now)
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{
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return set_rtc_mmss(now.tv_sec);
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}
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void time_init(void)
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{
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hw_timer_init();
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}
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