common/cmd_misc.c

   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 /*
  25  * Misc functions
  26  */
  27 #include <common.h>
  28 #include <command.h>
  29
  30 int do_sleep (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
  31 {
  32         ulong start = get_timer(0);
  33         ulong delay;
  34
  35         if (argc != 2) {
  36                 printf ("Usage:\n%s\n", cmdtp->usage);
  37                 return 1;
  38         }
  39
  40         delay = simple_strtoul(argv[1], NULL, 10) * CFG_HZ;
  41
  42         while (get_timer(start) < delay) {
  43                 if (ctrlc ()) {
  44                         return (-1);
  45                 }
  46                 udelay (100);
  47         }
  48
  49         return 0;
  50 }
  51
  52 /* Implemented in $(CPU)/interrupts.c */
  53 #if defined(CONFIG_CMD_IRQ)
  54 int do_irqinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
  55
  56 U_BOOT_CMD(
  57         irqinfo,    1,    1,     do_irqinfo,
  58         "irqinfo - print information about IRQs\n",
  59         NULL
  60 );
  61 #endif
  62
  63 U_BOOT_CMD(
  64         sleep ,    2,    1,     do_sleep,
  65         "sleep   - delay execution for some time\n",
  66         "N\n"
  67         "    - delay execution for N seconds (N is _decimal_ !!!)\n"
  68 );