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da83bcd7b3
Two sub-commands... start and get. * start sets the reference. * get prints out the time since the last start (in "<sec>.<msec>" format). If get is called without start, returns time since boot. Simple way to benchmark an operation: "timer start;<commands-to-measure>;timer get" Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/*
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* (C) Copyright 2001
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Misc functions
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*/
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#include <common.h>
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#include <command.h>
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int do_sleep (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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ulong start = get_timer(0);
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ulong delay;
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if (argc != 2)
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return CMD_RET_USAGE;
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delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
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while (get_timer(start) < delay) {
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if (ctrlc ())
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return (-1);
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udelay (100);
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}
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return 0;
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}
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U_BOOT_CMD(
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sleep , 2, 1, do_sleep,
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"delay execution for some time",
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"N\n"
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" - delay execution for N seconds (N is _decimal_ !!!)"
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);
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#ifdef CONFIG_CMD_TIMER
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static int do_timer(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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static ulong start;
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if (argc != 2)
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return CMD_RET_USAGE;
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if (!strcmp(argv[1], "start"))
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start = get_timer(0);
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if (!strcmp(argv[1], "get")) {
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ulong msecs = get_timer(start) * 1000 / CONFIG_SYS_HZ;
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printf("%ld.%03d\n", msecs / 1000, (int)(msecs % 1000));
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}
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return 0;
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}
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U_BOOT_CMD(
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timer, 2, 1, do_timer,
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"access the system timer",
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"start - Reset the timer reference.\n"
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"timer get - Print the time since 'start'."
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);
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#endif
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