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  • /*
     * Copyright 2000-2009
     * 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
     */
    
    #include <common.h>
    #include <command.h>
    
    int do_help(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
    {
    	return _do_help(&__u_boot_cmd_start,
    			&__u_boot_cmd_end - &__u_boot_cmd_start,
    			cmdtp, flag, argc, argv);
    }
    
    U_BOOT_CMD(
    	help,	CONFIG_SYS_MAXARGS,	1,	do_help,
    	"print online help",
    	"[command ...]\n"
    	"    - show help information (for 'command')\n"
    	"'help' prints online help for the monitor commands.\n\n"
    	"Without arguments, it prints a short usage message for all commands.\n\n"
    	"To get detailed help information for specific commands you can type\n"
    	"'help' with one or more command names as arguments."
    );
    
    /* This does not use the U_BOOT_CMD macro as ? can't be used in symbol names */
    #ifdef  CONFIG_SYS_LONGHELP
    cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = {
    	"?",	CONFIG_SYS_MAXARGS,	1,	do_help,
    	"alias for 'help'",
    	""
    };
    #else
    cmd_tbl_t __u_boot_cmd_question_mark Struct_Section = {
    	"?",	CONFIG_SYS_MAXARGS,	1,	do_help,
    	"alias for 'help'"
    };
    #endif /* CONFIG_SYS_LONGHELP */