| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright 2000-2009 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| */ |
| |
| #include <command.h> |
| |
| static int do_help(struct cmd_tbl *cmdtp, int flag, int argc, |
| char *const argv[]) |
| { |
| #ifdef CONFIG_CMDLINE |
| struct cmd_tbl *start = ll_entry_start(struct cmd_tbl, cmd); |
| const int len = ll_entry_count(struct cmd_tbl, 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'" |
| ); |
| |
| #ifdef CONFIG_CMDLINE |
| /* |
| * This does not use the U_BOOT_CMD macro as ? can't be used in symbol names |
| * nor can we rely on the CONFIG_SYS_LONGHELP helper macro |
| */ |
| ll_entry_declare(struct cmd_tbl, question_mark, cmd) = { |
| "?", CONFIG_SYS_MAXARGS, cmd_always_repeatable, do_help, |
| "alias for 'help'", |
| #ifdef CONFIG_SYS_LONGHELP |
| "" |
| #endif /* CONFIG_SYS_LONGHELP */ |
| }; |
| #endif |