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https://github.com/AsahiLinux/u-boot
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78 lines
2.2 KiB
C
78 lines
2.2 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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* 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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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