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