commands/*: Replace license and copyright boilerplate by SPDX identfiers ...

While at it also drop references to the non-existing CREDITS file and do
some small rearrangements for some uniform formatting.
(SPDX-License-Identifier first, then copyright texts and then an empty
line.)

The advantage is that these specifiers are machine-parseable which helps
license conformance.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nand command: fix null pointer when adding/deleting a bb device ...

Commit 40ee300 introduces info option about bad blocks. The open()
function call is therefore moved out from mark good/bad block to use the
filedescriptor in info option too. If someone tries to add/delete a bb device
the optind variable is incremented and the open() call gets a null pointer.
Fix this issue by returning when the bb device is added/deleted.

Signed-off-by: Oleg Karfich <oleg.karfich@wago.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand: Add option to print bbt in nand command ...

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

mtd: Add support for marking blocks as good ...

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

mtd: core: check offset in mtd_block_markbad ...

Check if the given offset is valid for the mtd device. Print an error
message if not to inform the user in the command 'nand'.

Signed-off-by: Stefan Christ <s.christ@phytec.de>
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>

nand command: check for <dev> directly after option parsing ...

Allo subcommands need at least one nonopt arg, so check for
it right after parsing the options and drop the check in the
MARKBAD command.

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

nand command: use enumeration for command instead of bitmask ...

A command can only be one of NAND_*, so use an enumeration instead
of a bitmask.

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

nand command: use loff_t for block offset ...

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>

mtd: fix bad block ioctls ...

Since this commit we interpret the argument to the bad block ioctls
as a pointer to a 64bit number:

|commit e71c343
|Author: Sascha Hauer <s.hauer@pengutronix.de>
|Date:   Fri Oct 14 11:57:55 2011 +0200
|
|    mtd: fix arguments to bad block ioctls
|
|    In the Kernel the mtd ioctls expect a pointer to the offset, whereas
|    barebox interprets the pointer itself as an offset. Since we want
|    to add 64bit support for file sizes a pointer may not be sufficient,
|    so align with the kernel and convert it to a pointer to the offset.
|
|    Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This missed some places, fix them aswell.

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

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>

nand bb: add proper bb remove function ...

The old way happily removed cdev entries which were no bb dev
at all. Fix this by checking if the given device actually is
a bb device.

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

nand bb: switch to cdev operations ...

The cdev operations are available without the complete file API,
so they are more suitable for internal usage.

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

nand: move bb handling code to drivers/mtd/nand ...

It's good to seperate the code which others can use from commands.
This way other users do not depend on the command being compiled in.

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

devfs: remove unused struct filep* argument from open/close ...

the cdev layer is under the file layer, so it should not use
struct filep*.

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

nand: Make write support optional ...

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

nand: fix printf compiler warnings ...

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

Make some help comments less confusing ...

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
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>

commands/nand.c: Fix memory hole ...

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>

nand bb: Be sure that fd is at the beginning when erasing ...

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>

call getopt_reset only once ...

instead of calling getopt_reset in each command,
call it only once before calling the command.

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

nand bb: fix handling of two subsequent bad blocks ...

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

nand bb: fix removal of bb devices ...

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

nand bb: fix check when erasing a bb device ...

We can actually partly erase a bb device, so fix the check.

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

nand bb: Fix writing of nand page unaligned data ...

We used to write the data in nand_bb_write directly to the
NAND flash. If we do not write a whole NAND page at once, this
resulted in multiple writes of one page which corrupted the
ecc data.
Fix this by collecting 4096 bytes of data before actually
writing the data to the flash.

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