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(struct cmd_tbl *cmdtp, int flag, int argc,
  13. char *const argv[])
  14. {
  15. ulong start = get_timer(0);
  16. ulong mdelay = 0;
  17. ulong delay;
  18. char *frpart;
  19. if (argc != 2)
  20. return CMD_RET_USAGE;
  21. delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
  22. frpart = strchr(argv[1], '.');
  23. if (frpart) {
  24. uint mult = CONFIG_SYS_HZ / 10;
  25. for (frpart++; *frpart != '\0' && mult > 0; frpart++) {
  26. if (*frpart < '0' || *frpart > '9') {
  27. mdelay = 0;
  28. break;
  29. }
  30. mdelay += (*frpart - '0') * mult;
  31. mult /= 10;
  32. }
  33. }
  34. delay += mdelay;
  35. while (get_timer(start) < delay) {
  36. if (ctrlc())
  37. return (-1);
  38. udelay(100);
  39. }
  40. return 0;
  41. }
  42. U_BOOT_CMD(
  43. sleep , 2, 1, do_sleep,
  44. "delay execution for some time",
  45. "N\n"
  46. " - delay execution for N seconds (N is _decimal_ and can be\n"
  47. " fractional)"
  48. );
  49. #ifdef CONFIG_CMD_TIMER
  50. static int do_timer(struct cmd_tbl *cmdtp, int flag, int argc,
  51. char *const argv[])
  52. {
  53. static ulong start;
  54. if (argc != 2)
  55. return CMD_RET_USAGE;
  56. if (!strcmp(argv[1], "start"))
  57. start = get_timer(0);
  58. if (!strcmp(argv[1], "get")) {
  59. ulong msecs = get_timer(start) * 1000 / CONFIG_SYS_HZ;
  60. printf("%ld.%03d\n", msecs / 1000, (int)(msecs % 1000));
  61. }
  62. return 0;
  63. }
  64. U_BOOT_CMD(
  65. timer, 2, 1, do_timer,
  66. "access the system timer",
  67. "start - Reset the timer reference.\n"
  68. "timer get - Print the time since 'start'."
  69. );
  70. #endif