arch/microblaze/lib/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
  30 void __udelay (unsigned long usec)
  31 {
  32         int i;
  33         i = get_timer (0);
  34         while ((get_timer (0) - i) < (usec / 1000)) ;
  35 }
  36 #else
  37 void __udelay (unsigned long usec)
  38 {
  39         unsigned int i;
  40         for (i = 0; i < (usec * CONFIG_XILINX_CLOCK_FREQ / 10000000); i++);
  41 }
  42 #endif