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barebox
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command: allow runtime usage 

This will allow as example to list the currently supported digest.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2015-03-17 12:53:14 +01:00 committed by Sascha Hauer
parent 5f5d5331bb
commit 9f15b42105
2 changed files with 5 additions and 0 deletions
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2
common/command.c
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@ -47,6 +47,8 @@ void barebox_cmd_usage(struct command *cmdtp)
puts(cmdtp->help);
putchar('\n');
}
if (cmdtp->usage)
cmdtp->usage();
#endif
}
EXPORT_SYMBOL(barebox_cmd_usage);

3
include/command.h
View File

@ -54,6 +54,7 @@ struct command {
uint32_t group;
#ifdef CONFIG_LONGHELP
const char *help; /* Help message (long) */
void (*usage)(void);
#endif
}
#ifdef __x86_64__
@ -115,8 +116,10 @@ static const __maybe_unused char cmd_##_name##_help[] =
#ifdef CONFIG_LONGHELP
#define BAREBOX_CMD_HELP(text) .help = text,
#define BAREBOX_CMD_USAGE(fn) .usage = fn,
#else
#define BAREBOX_CMD_HELP(text)
#define BAREBOX_CMD_USAGE(fn)
#endif
#define BAREBOX_CMD_GROUP(grp) .group = grp,