common/cmd_misc.c

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