]> Git Repo - J-u-boot.git/blob - cmd/help.c
bootm: Drop arguments from do_bootm_states()
[J-u-boot.git] / cmd / help.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright 2000-2009
4  * Wolfgang Denk, DENX Software Engineering, [email protected].
5  */
6
7 #include <common.h>
8 #include <command.h>
9
10 static int do_help(struct cmd_tbl *cmdtp, int flag, int argc,
11                    char *const argv[])
12 {
13 #ifdef CONFIG_CMDLINE
14         struct cmd_tbl *start = ll_entry_start(struct cmd_tbl, cmd);
15         const int len = ll_entry_count(struct cmd_tbl, 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 #ifdef CONFIG_CMDLINE
32 /*
33  * This does not use the U_BOOT_CMD macro as ? can't be used in symbol names
34  * nor can we rely on the CONFIG_SYS_LONGHELP helper macro
35  */
36 ll_entry_declare(struct cmd_tbl, question_mark, cmd) = {
37         "?",    CONFIG_SYS_MAXARGS, cmd_always_repeatable,      do_help,
38         "alias for 'help'",
39 #ifdef  CONFIG_SYS_LONGHELP
40         ""
41 #endif /* CONFIG_SYS_LONGHELP */
42 };
43 #endif
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