63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/*
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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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* (C) Copyright 2007
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* Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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/* Implemented by SPARC CPUs */
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extern void cpu_wait_ticks(unsigned long ticks);
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extern unsigned long cpu_usec2ticks(unsigned long usec);
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extern unsigned long cpu_ticks2usec(unsigned long ticks);
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/* ------------------------------------------------------------------------- */
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void wait_ticks(unsigned long ticks)
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{
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cpu_wait_ticks(ticks);
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}
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/*
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* This function is intended for SHORT delays only.
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*/
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unsigned long usec2ticks(unsigned long usec)
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{
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return cpu_usec2ticks(usec);
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}
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/* ------------------------------------------------------------------------- */
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/*
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* We implement the delay by converting the delay (the number of
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* microseconds to wait) into a number of time base ticks; then we
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* watch the time base until it has incremented by that amount.
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*/
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void __udelay(unsigned long usec)
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{
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ulong ticks = usec2ticks(usec);
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wait_ticks(ticks);
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}
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/* ------------------------------------------------------------------------- */
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unsigned long ticks2usec(unsigned long ticks)
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{
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return cpu_ticks2usec(ticks);
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}
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/* ------------------------------------------------------------------------- */
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int init_timebase(void)
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{
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return (0);
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}
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/* ------------------------------------------------------------------------- */
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