cmd_misc.c 1.4 KB

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  1. /*
  2. * (C) Copyright 2001
  3. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. /*
  24. * Misc functions
  25. */
  26. #include <common.h>
  27. #include <command.h>
  28. int do_sleep (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  29. {
  30. ulong start = get_timer(0);
  31. ulong delay;
  32. if (argc != 2) {
  33. cmd_usage(cmdtp);
  34. return 1;
  35. }
  36. delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
  37. while (get_timer(start) < delay) {
  38. if (ctrlc ()) {
  39. return (-1);
  40. }
  41. udelay (100);
  42. }
  43. return 0;
  44. }
  45. U_BOOT_CMD(
  46. sleep , 2, 1, do_sleep,
  47. "delay execution for some time",
  48. "N\n"
  49. " - delay execution for N seconds (N is _decimal_ !!!)"
  50. );