u-boot/common/cmd_misc.c
Wolfgang Denk a89c33db96 General help message cleanup
Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-06-12 20:47:16 +02:00

69 lines
1.6 KiB
C

/*
* (C) Copyright 2001
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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
*/
/*
* Misc functions
*/
#include <common.h>
#include <command.h>
int do_sleep (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
ulong start = get_timer(0);
ulong delay;
if (argc != 2) {
cmd_usage(cmdtp);
return 1;
}
delay = simple_strtoul(argv[1], NULL, 10) * CONFIG_SYS_HZ;
while (get_timer(start) < delay) {
if (ctrlc ()) {
return (-1);
}
udelay (100);
}
return 0;
}
/* Implemented in $(CPU)/interrupts.c */
#if defined(CONFIG_CMD_IRQ)
int do_irqinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
U_BOOT_CMD(
irqinfo, 1, 1, do_irqinfo,
"print information about IRQs",
""
);
#endif
U_BOOT_CMD(
sleep , 2, 1, do_sleep,
"delay execution for some time",
"N\n"
" - delay execution for N seconds (N is _decimal_ !!!)"
);