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/*
* Copyright 2012 GE Intelligent Platforms, Inc.
* (C) Copyright 2000, 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <common.h>
#include <clock.h>
#include <init.h>
#include <mach/clock.h>
static uint64_t ppc_clocksource_read(void)
{
return get_ticks();
}
static struct clocksource cs = {
.read = ppc_clocksource_read,
.mask = CLOCKSOURCE_MASK(64),
.priority = 80,
};
static int clocksource_init(void)
{
/* reset time base */
asm ("li 3,0 ; mttbu 3 ; mttbl 3 ;");
clocks_calc_mult_shift(&cs.mult, &cs.shift,
fsl_get_timebase_clock(), NSEC_PER_SEC, 10);
return init_clock(&cs);
}
core_initcall(clocksource_init);
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