misc.c 1.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2001
  4. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  5. */
  6. /*
  7. * Misc functions
  8. */
  9. #include <common.h>
  10. #include <command.h>
  11. #include <console.h>
  12. static int do_sleep(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  13. {
  14. ulong start = get_timer(0);
  15. ulong mdelay = 0;
  16. ulong delay;
  17. char *frpart;
  18. if (argc != 2)
  19. return CMD_RET_USAGE;
  20. delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
  21. frpart = strchr(argv[1], '.');
  22. if (frpart) {
  23. uint mult = CONFIG_SYS_HZ / 10;
  24. for (frpart++; *frpart != '\0' && mult > 0; frpart++) {
  25. if (*frpart < '0' || *frpart > '9') {
  26. mdelay = 0;
  27. break;
  28. }
  29. mdelay += (*frpart - '0') * mult;
  30. mult /= 10;
  31. }
  32. }
  33. delay += mdelay;
  34. while (get_timer(start) < delay) {
  35. if (ctrlc())
  36. return (-1);
  37. udelay(100);
  38. }
  39. return 0;
  40. }
  41. U_BOOT_CMD(
  42. sleep , 2, 1, do_sleep,
  43. "delay execution for some time",
  44. "N\n"
  45. " - delay execution for N seconds (N is _decimal_ and can be\n"
  46. " fractional)"
  47. );
  48. #ifdef CONFIG_CMD_TIMER
  49. static int do_timer(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  50. {
  51. static ulong start;
  52. if (argc != 2)
  53. return CMD_RET_USAGE;
  54. if (!strcmp(argv[1], "start"))
  55. start = get_timer(0);
  56. if (!strcmp(argv[1], "get")) {
  57. ulong msecs = get_timer(start) * 1000 / CONFIG_SYS_HZ;
  58. printf("%ld.%03d\n", msecs / 1000, (int)(msecs % 1000));
  59. }
  60. return 0;
  61. }
  62. U_BOOT_CMD(
  63. timer, 2, 1, do_timer,
  64. "access the system timer",
  65. "start - Reset the timer reference.\n"
  66. "timer get - Print the time since 'start'."
  67. );
  68. #endif