Commit graph

13 commits

Author SHA1 Message Date
Simon Glass
e1bf824dfd Add cli_ prefix to readline functions
This makes it clear where the code resides.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-05-29 17:45:31 -04:00
Simon Glass
18d66533ac move CLI prototypes to cli.h and add comments
Move the CLI prototypes from common.h to cli.h as part of an effort to
reduce the size of common.h.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-05-29 17:45:31 -04:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Igor Grinberg
e3150460a4 common: move extern char console_buffer[] to common.h
Extract all extern declarations for console_buffer[] out of c files into
the common.h header.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Cc: Frank Gottschling <fgottschling@eltec.de>
Cc: Murray Jensen <Murray.Jensen@csiro.au>
2011-11-22 08:39:25 +01:00
Wolfgang Denk
47e26b1bf9 cmd_usage(): simplify return code handling
Lots of code use this construct:

	cmd_usage(cmdtp);
	return 1;

Change cmd_usage() let it return 1 - then we can replace all these
ocurrances by

	return cmd_usage(cmdtp);

This fixes a few places with incorrect return code handling, too.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-07-24 20:43:57 +02:00
Wolfgang Denk
54841ab50c Make sure that argv[] argument pointers are not modified.
The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands.  Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".

This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:

int main (int argc, char **argv)
{
	while (--argc > 0 && **++argv == '-') {
/* ====> */	while (*++*argv) {
			switch (**argv) {
			case 'd':
				debug++;
				break;
			...
			default:
				usage ();
			}
		}
	}
	...
}

The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell.  With the modification, the compiler will prevent this with
an
	error: increment of read-only location '*argv'

N.B.: The code above can be trivially rewritten like this:

	while (--argc > 0 && **++argv == '-') {
		char *arg = *argv;
		while (*++arg) {
			switch (*arg) {
			...

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2010-07-04 23:55:42 +02:00
Wolfgang Denk
a89c33db96 General help message cleanup
Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-06-12 20:47:16 +02:00
Peter Tyser
2fb2604d5c Command usage cleanup
Remove command name from all command "usage" fields and update
common/command.c to display "name - usage" instead of
just "usage". Also remove newlines from command usage fields.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-01-28 08:49:52 +01:00
Peter Tyser
62c3ae7c6e Standardize command usage messages with cmd_usage()
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2009-01-28 08:43:45 +01:00
Wolfgang Denk
8ed44d91c8 Cleanup: fix "MHz" spelling
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-10-21 11:25:39 +02:00
Jean-Christophe PLAGNIOL-VILLARD
8a40fb148e move cmd_get_data_size to command.c
add CMD_DATA_SIZE macro to enable it

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-09-10 22:48:05 +02:00
Wolfgang Denk
b87dfd2854 Add support for TB5200 board
The TB5200 ("Tinybox") is a small baseboard for the TQM5200 module
integrated in a little aluminium case.
Patch by Martin Krause, 8 Jun 2006

Some code cleanup
2006-07-19 13:50:38 +02:00
Marian Balakowicz
6c5879f380 Add support for AMCC 440SPe CPU based eval board (Yucca). 2006-06-30 16:30:46 +02:00