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/*
* Copyright (c) 2011 The Chromium OS Authors.
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
/*
* TODO(clchiou): This function actually minics the bottom-half of the
* run_command() function. Since this function has ARM-dependent timer
* codes, we cannot merge it with the run_command() for now.
*/
static int run_command_and_time_it(int flag, int argc, char * const argv[],
ulong *cycles)
{
cmd_tbl_t *cmdtp = find_cmd(argv[0]);
int retval = 0;
if (!cmdtp) {
printf("%s: command not found\n", argv[0]);
return 1;
}
if (argc > cmdtp->maxargs)
return cmd_usage(cmdtp);
/*
* TODO(clchiou): get_timer_masked() is only defined in certain ARM
* boards. We could use the new timer API that Graeme is proposing
* so that this piece of code would be arch-independent.
*/
*cycles = get_timer_masked();
retval = cmdtp->cmd(cmdtp, flag, argc, argv);
*cycles = get_timer_masked() - *cycles;
return retval;
}
static void report_time(ulong cycles)
{
ulong minutes, seconds, milliseconds;
ulong total_seconds, remainder;
total_seconds = cycles / CONFIG_SYS_HZ;
remainder = cycles % CONFIG_SYS_HZ;
minutes = total_seconds / 60;
seconds = total_seconds % 60;
/* approximate millisecond value */
milliseconds = (remainder * 1000 + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ;
printf("\ntime:");
if (minutes)
printf(" %lu minutes,", minutes);
printf(" %lu.%03lu seconds, %lu ticks\n",
seconds, milliseconds, cycles);
}
static int do_time(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
ulong cycles = 0;
int retval = 0;
if (argc == 1)
return cmd_usage(cmdtp);
retval = run_command_and_time_it(0, argc - 1, argv + 1, &cycles);
report_time(cycles);
return retval;
}
U_BOOT_CMD(time, CONFIG_SYS_MAXARGS, 0, do_time,
"run commands and summarize execution time",
"command [args...]\n");