path: root/commands/memcpy.c
diff options
authorHolger Schurig <>2014-05-13 10:28:42 +0200
committerSascha Hauer <>2014-05-14 10:03:43 +0200
commitf1f532084a6e9ee8225f047353999b459455df7e (patch)
treef2b8b1f25c5c630209c6970e3a7ce57a3d55d367 /commands/memcpy.c
parentab23d0bb3f66cfb7a97a8aa6b8007687ed7a6925 (diff)
commands: harmonize in-barebox documentation
This patch does probably too much, but it's hard (and very cumbersome/time consuming) to break it out. What is does is this: * each command has one short description, e.g. "list MUX configuration" * made sure the short descriptions start lowercase * each command has one usage. That string contains just the options, e.g. "[-npn]". It's not part of the long help text. * that is, it doesn't say "[OPTIONS]" anymore, every usable option is listed by character in this (short) option string (the long description is in the long help text, as before) * help texts have been reworked, to make them - sometimes smaller - sometimes describe the options better - more often present themselves in a nicer format * all long help texts are now created with BUSYBOX_CMD_HELP_ macros, no more 'static const __maybe_unused char cmd_foobar_help[]' * made sure the long help texts starts uppercase * because cmdtp->name and cmdtp->opts together provide the new usage, all "Usage: foobar" texts have been removed from the long help texts * BUSYBOX_CMD_HELP_TEXT() provides the trailing newline by itself, this is nicer in the source code * BUSYBOX_CMD_HELP_OPT() provides the trailing newline by itself * made sure no line gets longer than 77 characters * delibertely renamed cmdtp->usage, so that we can get compile-time errors (e.g. in out-of-tree modules that use register_command() * the 'help' command can now always emit the usage, even without compiled long help texts * 'help -v' gives a list of commands with their short description, this is similar like the old "help" command before my patchset * 'help -a' gives out help of all commands Signed-off-by: Holger Schurig <> Signed-off-by: Sascha Hauer <>
Diffstat (limited to 'commands/memcpy.c')
1 files changed, 12 insertions, 10 deletions
diff --git a/commands/memcpy.c b/commands/memcpy.c
index 5a791b0..78716b1 100644
--- a/commands/memcpy.c
+++ b/commands/memcpy.c
@@ -128,19 +128,21 @@ out:
return ret;
-static const __maybe_unused char cmd_memcpy_help[] =
-"Usage: memcpy [OPTIONS] <src> <dst> <count>\n"
-" -b, -w, -l use byte, halfword, or word accesses\n"
-" -s <file> source file (default /dev/mem)\n"
-" -d <file> destination file (default /dev/mem)\n"
-"Copy memory at <src> of <count> bytes to <dst>\n";
+BAREBOX_CMD_HELP_TEXT("Copy memory at SRC of COUNT bytes to DEST")
+BAREBOX_CMD_HELP_OPT ("-b", "byte access")
+BAREBOX_CMD_HELP_OPT ("-w", "word access (16 bit)")
+BAREBOX_CMD_HELP_OPT ("-l", "long access (32 bit)")
+BAREBOX_CMD_HELP_OPT ("-s FILE", "source file (default /dev/mem)")
+BAREBOX_CMD_HELP_OPT ("-d FILE", "write file (default /dev/mem)")
.cmd = do_memcpy,
- .usage = "memory copy",
+ BAREBOX_CMD_DESC("memory copy")