[people/ms/u-boot.git] / cmd / help.c

/*
 * Copyright 2000-2009
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>

static int do_help(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
#ifdef CONFIG_CMDLINE
	cmd_tbl_t *start = ll_entry_start(cmd_tbl_t, cmd);
	const int len = ll_entry_count(cmd_tbl_t, cmd);
	return _do_help(start, len, cmdtp, flag, argc, argv);
#else
	return 0;
#endif
}

U_BOOT_CMD(
	help,	CONFIG_SYS_MAXARGS,	1,	do_help,
	"print command description/usage",
	"\n"
	"	- print brief description of all commands\n"
	"help command ...\n"
	"	- print detailed usage of 'command'"
);

/* This does not use the U_BOOT_CMD macro as ? can't be used in symbol names */
ll_entry_declare(cmd_tbl_t, question_mark, cmd) = {
	"?",	CONFIG_SYS_MAXARGS,	1,	do_help,
	"alias for 'help'",
#ifdef  CONFIG_SYS_LONGHELP
	""
#endif /* CONFIG_SYS_LONGHELP */
};
Commit	Line	Data
	1	/*
	2	* Copyright 2000-2009
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <command.h>
	10
	11	static int do_help(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	12	{
	13	#ifdef CONFIG_CMDLINE
	14	cmd_tbl_t *start = ll_entry_start(cmd_tbl_t, cmd);
	15	const int len = ll_entry_count(cmd_tbl_t, cmd);
	16	return _do_help(start, len, cmdtp, flag, argc, argv);
	17	#else
	18	return 0;
	19	#endif
	20	}
	21
	22	U_BOOT_CMD(
	23	help, CONFIG_SYS_MAXARGS, 1, do_help,
	24	"print command description/usage",
	25	"\n"
	26	" - print brief description of all commands\n"
	27	"help command ...\n"
	28	" - print detailed usage of 'command'"
	29	);
	30
	31	/* This does not use the U_BOOT_CMD macro as ? can't be used in symbol names */
	32	ll_entry_declare(cmd_tbl_t, question_mark, cmd) = {
	33	"?", CONFIG_SYS_MAXARGS, 1, do_help,
	34	"alias for 'help'",
	35	#ifdef CONFIG_SYS_LONGHELP
	36	""
	37	#endif /* CONFIG_SYS_LONGHELP */
	38	};