mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/*
|
|
* (C) Copyright 2000, 2001
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2007
|
|
* Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
|
|
/* Implemented by SPARC CPUs */
|
|
extern void cpu_wait_ticks(unsigned long ticks);
|
|
extern unsigned long cpu_usec2ticks(unsigned long usec);
|
|
extern unsigned long cpu_ticks2usec(unsigned long ticks);
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
void wait_ticks(unsigned long ticks)
|
|
{
|
|
cpu_wait_ticks(ticks);
|
|
}
|
|
|
|
/*
|
|
* This function is intended for SHORT delays only.
|
|
*/
|
|
unsigned long usec2ticks(unsigned long usec)
|
|
{
|
|
return cpu_usec2ticks(usec);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* We implement the delay by converting the delay (the number of
|
|
* microseconds to wait) into a number of time base ticks; then we
|
|
* watch the time base until it has incremented by that amount.
|
|
*/
|
|
void udelay(unsigned long usec)
|
|
{
|
|
ulong ticks = usec2ticks(usec);
|
|
|
|
wait_ticks(ticks);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
unsigned long ticks2usec(unsigned long ticks)
|
|
{
|
|
return cpu_ticks2usec(ticks);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
int init_timebase(void)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|