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