/* * (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); } /* ------------------------------------------------------------------------- */