common/cmd_time.c

   1 /*
   2  * Copyright (c) 2011 The Chromium OS Authors.
   3  * See file CREDITS for list of people who contributed to this
   4  * project.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  19  * MA 02111-1307 USA
  20  */
  21
  22 #include <common.h>
  23 #include <command.h>
  24
  25 static void report_time(ulong cycles)
  26 {
  27         ulong minutes, seconds, milliseconds;
  28         ulong total_seconds, remainder;
  29
  30         total_seconds = cycles / CONFIG_SYS_HZ;
  31         remainder = cycles % CONFIG_SYS_HZ;
  32         minutes = total_seconds / 60;
  33         seconds = total_seconds % 60;
  34         /* approximate millisecond value */
  35         milliseconds = (remainder * 1000 + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ;
  36
  37         printf("\ntime:");
  38         if (minutes)
  39                 printf(" %lu minutes,", minutes);
  40         printf(" %lu.%03lu seconds, %lu ticks\n",
  41                         seconds, milliseconds, cycles);
  42 }
  43
  44 static int do_time(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  45 {
  46         ulong cycles = 0;
  47         int retval = 0;
  48         int repeatable;
  49
  50         if (argc == 1)
  51                 return CMD_RET_USAGE;
  52
  53         retval = cmd_process(0, argc - 1, argv + 1, &repeatable, &cycles);
  54         report_time(cycles);
  55
  56         return retval;
  57 }
  58
  59 U_BOOT_CMD(time, CONFIG_SYS_MAXARGS, 0, do_time,
  60                 "run commands and summarize execution time",
  61                 "command [args...]\n");