commands: allow <cmd>_aliases[] to be const ...

Commands with aliases define an array of alias strings such as:

  static const char *<cmd>_aliases[] = { "<alias1>", NULL};

Although the elements are of type `const char *`, the elements
themselves are not `const`-qualified.  If the array is declared as:

  static const char * const <cmd>_aliases[] = { "<alias1>", NULL};

then the compiler warns about const qualifiers being discarded.  This is
because the `aliases` member of `struct command` is declared as `const
char *aliases;`.

Change the declaration of the `aliases` member of `struct command` to
`const char * const *aliases;` so that it can point to a `const` array
of `const char *`.  Also change the declaration of the `aliases`
variable in `register_command()` to avoid unnecessary type casts.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

command.h: drop unused Struct_Section attribute ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

include: move run_command prototype to command.h ...

run_command fits much better into command.h, move it there.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

NULL: keep NULL definition in stddef.h only ...

remove other local definition of NULL, use
  #include <linux/stddef.h>
instead.
I use this command to search NULL definition,
  grep -R "define\s*\<NULL\>"
hope there are no more definition of NULL.

from ISO/IEC 9899:TC3:
The macros are
	NULL
which expands to an implementation-defined null pointer constant;

Signed-off-by: Du Huanpeng <u74147@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

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>

Documentation: remove doxygen documentation ...

The doxygen documentation is long outdated. Remove it. It will
be replaced with sphinx based documentation later.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

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 <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: group 'help' output ...

The old output of "help" was just producing a long list, that usually
scrolled of the screen (even on a X11 terminal). This list is more
compact, and also sorted by groups.

The old output format (plus grouping) is now available with 'help -v'.

Example:

   Information commands:
     ?, devinfo, help, iomem, meminfo, version
   Boot commands:
     boot, bootm, go, loadb, loads, loadx, loady, saves, uimage
   ...

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

complete: add generic command complete framework ...

introduce generic command specific complete callback

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

commands: remove struct command pointer from commands ...

This is unused in all commands and thus can be removed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: really print BAREBOX_CMD_HELP_TEXT ...

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

doc: add macros to unify command help with doxygen ...

Currently we have duplicated all the information that appears online in
'help <command>' and in the doxygen documentation. This patch adds some
infrastructure to specify help texts only once and re-use them for the
integrated help as well as for the manual.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>

doc: avoid that doxygen parses magic in command.h ...

Don't let doxygen parse the command magic, which leads to these warnings:

command.h:93: Warning: explicit link request to 'define' could not be resolved
command.h:98: Warning: expected <tr> tag but found TK_LNKWORD token instead!
command.h:98: Warning: Found unknown command `\t'
command.h:101: Warning: explicit link request to 'define' could not be resolved
command.h:103: Warning: explicit link request to 'define' could not be resolved

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

command.h: sparse fixes ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

import __stringify from linux ...

update the current code

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

remove typedef cmd_tbl_t and replace it with struct command ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

remove obsolete comment ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

rename U-Boot-v2 project to barebox ...

This has been done with the following script:

find -path ./.git -prune -o -type f -print0 | xargs -0 -r sed -i \
	-e 's/u2boot/barebox/g' \
	-e 's/U2Boot/barebox/g' \
	-e 's/U-boot V2/barebox/g' \
	-e 's/u-boot v2/barebox/g' \
	-e 's/U-Boot V2/barebox/g' \
	-e 's/U-Boot-v2/barebox/g' \
	-e 's/U_BOOT/BAREBOX/g' \
	-e 's/UBOOT/BAREBOX/g' \
	-e 's/uboot/barebox/g' \
	-e 's/u-boot/barebox/g' \
	-e 's/u_boot/barebox/g' \
	-e 's/U-Boot/barebox/g' \
	-e 's/U-boot/barebox/g' \
	-e 's/U-BOOT/barebox/g'

find -path ./.git -prune -o \( -name "*u-boot*" -o -name "*uboot*" -o -name "*u_boot*" \) -print0 | \
	xargs -0 -r rename 's/u[-_]?boot/barebox/'

It needs some manual fixup following in the next patch

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

list: remove duplicated list.h ...

We accidently have two list implementations in the tree:
include/list.h and include/linux/list.h. This patch moves
the latter (newer one) to include/linux/list.h.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: remove maxargs ...

No need to check for maximum argument counts. The commands are
safe to be called with more arguments, so lets safe some bytes.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: add defines for command errors/success ...

This allows us to return COMMAND_ERROR_USAGE for
a failed command which will then print the usage,
a very common case for commands.

Signed-off-by: Sascha Hauer <sha@pengutronix.de>

remove unused typedef ...

Signed-off-by: Sascha Hauer <sha@pengutronix.de>

consolidate command calling in execute_command ...

Signed-off-by: Sascha Hauer <sha@pengutronix.de>

Subject: [PATCH] [general] Fixed constant strings in data section issue ...

For practical reasons I changed all string literals assumed to be constant
to reside in .rodata subsection at end of .text section.

Signed-off-by: Carsten Schlote <schlote@vahanus.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

remove traces of old tab completion

Collect all commands in a linked list. This makes it easier to handle ...

dynamically registered commands.

Add register_command() to register a command in runtime. This ...

is only needed when modules are enabled, so the change is inside
"#ifdef CONFIG_MODULE"

remove u-boot command paramter flag