blob: f832a96971ea57b50b17052bc2d4e7f852cb5b0f [file] [log] [blame]
Peter Tyser6b8f5ad2009-10-16 17:36:25 -05001/*
2 * Copyright 2000-2009
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#include <common.h>
25#include <command.h>
26
Kim Phillips088f1b12012-10-29 13:34:31 +000027static int do_help(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Peter Tyser6b8f5ad2009-10-16 17:36:25 -050028{
Marek Vasut6c7c9462012-10-12 10:27:04 +000029 cmd_tbl_t *start = ll_entry_start(cmd_tbl_t, cmd);
30 const int len = ll_entry_count(cmd_tbl_t, cmd);
31 return _do_help(start, len, cmdtp, flag, argc, argv);
Peter Tyser6b8f5ad2009-10-16 17:36:25 -050032}
33
34U_BOOT_CMD(
35 help, CONFIG_SYS_MAXARGS, 1, do_help,
Peter Tyser4e1ca932009-10-16 17:36:26 -050036 "print command description/usage",
37 "\n"
38 " - print brief description of all commands\n"
39 "help command ...\n"
40 " - print detailed usage of 'command'"
Peter Tyser6b8f5ad2009-10-16 17:36:25 -050041);
42
43/* This does not use the U_BOOT_CMD macro as ? can't be used in symbol names */
Marek Vasut6c7c9462012-10-12 10:27:04 +000044ll_entry_declare(cmd_tbl_t, question_mark, cmd, cmd) = {
Peter Tyser6b8f5ad2009-10-16 17:36:25 -050045 "?", CONFIG_SYS_MAXARGS, 1, do_help,
46 "alias for 'help'",
Peter Tyser4e1ca932009-10-16 17:36:26 -050047#ifdef CONFIG_SYS_LONGHELP
Peter Tyser6b8f5ad2009-10-16 17:36:25 -050048 ""
Peter Tyser6b8f5ad2009-10-16 17:36:25 -050049#endif /* CONFIG_SYS_LONGHELP */
Peter Tyser4e1ca932009-10-16 17:36:26 -050050};