time.c 1.2 KB

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  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. #include <common.h>
  27. #ifdef CONFIG_SYS_TIMER_0
  28. void __udelay (unsigned long usec)
  29. {
  30. int i;
  31. i = get_timer (0);
  32. while ((get_timer (0) - i) < (usec / 1000)) ;
  33. }
  34. #else
  35. void __udelay (unsigned long usec)
  36. {
  37. unsigned int i;
  38. for (i = 0; i < (usec * CONFIG_XILINX_CLOCK_FREQ / 10000000); i++);
  39. }
  40. #endif