]> Git Repo - J-u-boot.git/blob - cmd/help.c
Merge patch series "Add OPP_LOW support for J7200"
[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 <command.h>
8
9 static int do_help(struct cmd_tbl *cmdtp, int flag, int argc,
10                    char *const argv[])
11 {
12 #ifdef CONFIG_CMDLINE
13         struct cmd_tbl *start = ll_entry_start(struct cmd_tbl, cmd);
14         const int len = ll_entry_count(struct cmd_tbl, cmd);
15         return _do_help(start, len, cmdtp, flag, argc, argv);
16 #else
17         return 0;
18 #endif
19 }
20
21 U_BOOT_CMD(
22         help,   CONFIG_SYS_MAXARGS,     1,      do_help,
23         "print command description/usage",
24         "\n"
25         "       - print brief description of all commands\n"
26         "help command ...\n"
27         "       - print detailed usage of 'command'"
28 );
29
30 #ifdef CONFIG_CMDLINE
31 /*
32  * This does not use the U_BOOT_CMD macro as ? can't be used in symbol names
33  * nor can we rely on the CONFIG_SYS_LONGHELP helper macro
34  */
35 ll_entry_declare(struct cmd_tbl, question_mark, cmd) = {
36         "?",    CONFIG_SYS_MAXARGS, cmd_always_repeatable,      do_help,
37         "alias for 'help'",
38 #ifdef  CONFIG_SYS_LONGHELP
39         ""
40 #endif /* CONFIG_SYS_LONGHELP */
41 };
42 #endif
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