LXR uboot/lib_microblaze/time.c

   1/*
   2 * (C) Copyright 2007 Michal Simek
   3 * (C) Copyright 2004 Atmark Techno, Inc.
   4 *
   5 * Michal  SIMEK <monstr@monstr.eu>
   6 * Yasushi SHOJI <yashi@atmark-techno.com>
   7 *
   8 * See file CREDITS for list of people who contributed to this
   9 * project.
  10 *
  11 * This program is free software; you can redistribute it and/or
  12 * modify it under the terms of the GNU General Public License as
  13 * published by the Free Software Foundation; either version 2 of
  14 * the License, or (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24 * MA 02111-1307 USA
  25 */
  26
  27#include <common.h>
  28
  29#ifdef CONFIG_SYS_TIMER_0
  30void __udelay (unsigned long usec)
  31{
  32        int i;
  33        i = get_timer (0);
  34        while ((get_timer (0) - i) < (usec / 1000)) ;
  35}
  36#else
  37void __udelay (unsigned long usec)
  38{
  39        unsigned int i;
  40        for (i = 0; i < (usec * CONFIG_XILINX_CLOCK_FREQ / 10000000); i++);
  41}
  42#endif
  43