add menutree command ...

Creating menus from the shell using the regular 'menu' command is rather
complicated. This adds a 'menutree' command which creates a menu from
a directory structure. In the directory structure each directory corresponds
to a single menu entry. The directory contains the following files:

title -  A file containing the title of the entry as shown in the menu
box -    If present, the entry is a 'bool' entry. The file contains a variable
         name from which the current state of the bool is taken from and saved
         to.
action - if present this file contains a shell script which is executed when
         when the entry is selected.

If neither 'box' or 'action' are present this entry is considered a submenu
containing more entries.

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

defaultenv: Allow multiple defaultenvironment overlays ...

We can compile barebox for multiple boards at once, but currently
they all share a single default environment. This patch adds a
defaultenv_append() which boards can call to customize the default
environment during runtime. Each board now generate default environment
snippets using bbenv-y and add them during runtime with defaultenv_append()

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

move defaultenv-2 to defaultenv/defaultenv-2-* ...

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

move defaultenv-1 to defaultenv/defaultenv-1 ...

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

defaultenv: Align defaultenv array ...

The default environment buffer is an unsigned char array and thus
may be unaligned. Some decompression algorithms expect the buffer
to be sufficiently aligned for u32 accesses. We make this sure by
copying the default env to a temporary buffer. Instead of doing this
just add a __aligned(4) to the default environment.

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

Kconfig: Select default compression type ...

Instead of asking explicitly for the default environment compression
type ask for the in-barebox default compression type. This also adds
a DEFAULT_COMPRESSION_SUFFIX make variable which can be used together
with the wildcard rules for compressed files to generate compressed
files without explicitly support each compression type.

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

defaultenv: use wildcard compression rules ...

Now that we have wildcard rules for compresed files use them.

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

defaultenv: simplify env dependencies ...

Finding out whether to rebuild the environment is a difficult task
since we have to track all files in a directory. Instead of trying
this, just rebuild the environment during every build and only if
it differs to the last one overwrite the target. This way make
only sees a change when the environment is changed.

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

common/Makefile: reorder targets ...

Reorder targets alphabetically to make the file look nicer, no
functional change.

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

Make generated variables static ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: fix possible build problem without password support ...

In the case where CONFIG_PASSWORD is off, CONFIG_PASSWORD_DEFAULT is
undefined. As undefined is not "", this causes make to call find -type f.
If there is a filename containing a :, make will complain about having
"multiple target patterns"

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

Implement bootloader spec support for barebox ...

The Bootloader Specification describes a way how kernels can
be installed on devices and how they can be started by the bootloader.

The bootloader spec is currently supported by (x86) gummiboot and
by systemd which provides a kernel-install script. With the bootloader
spec it's possible for the Operating system to install a new kernel
without knowing about the bootloader and for the bootloader it's possible
to discover and start Operating Systems on a media without being
configured.

For more details about the spec see:

http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/

This patch adds barebox support for the spec. It enhances the 'boot'
command so that not only boot script names can be given, but also
devices containing bootloader spec entries. With this it's possible
to call the 'boot' command like: 'boot sd emmc net'. It would then
first look for bootloader spec entries on the (removable) sd card,
then, is nothing is found, on the internal emmc and if still
unsuccessful would call the 'net' bootscript.

The bootloader Spec currently doesn't specify which entry should be
default if multiple entries are found on a single device. Therefore
barebox currently has two extensions of the spec. The $BOOT diretory
can contain a file named 'default'. If present, the content of the
file is treated as a filename under $BOOT/loader/entries/ which is
used as default. Similarly if a file named 'once' is present, the
entry is started once and the file is removed afterwards. This is
useful for testing if a newly installed kernel works before making
it the default.

As on ARM and other Architectures a devicetree has to be specified
for the kernel, the 'devicetree' property is used to specify a
devicetree. Like 'kernel' and 'initrd' this also contains a pth
relative to $BOOT.

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

login/passwd: add default password support ...

even if the env is broken you will have a password

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

Merge branch 'for-next/ppc'

Merge branch 'for-next/memtest'

common: DDR2 SPD checksum. ...

The code calculates the DDR2 SPD checksum as per JEDEC standard
No 21-C Appendix X (revision 1.2)

The code is based on the equivalent files from U-Boot version
git-a71d45d.

Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

bootm: factor out code to make it usable from C ...

Much of the bootm code is implemented in the command itself. Move
it to a common place to be able to call it from C aswell.

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

common: add memtest.c with mem_test routine ...

Add mem_test routine. Useful to detect timing problems if someone
porting a new device to barebox. This test includes a data bus test,
address bus test and integrity check of memory.

This mem_test routine has as parameter start and end address of testing
space. The last parameter can skip the integrity check.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

make: Add barebox_default_env.* to targets ...

Otherwise it gets rebuilt everytime.

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

memory commands: move memory_display to separate file ...

memory_display is a function which should generally be available.
Currently it depends on memory command support being compiled in,
so move the function to a separate file.

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

bootsource: create arch independent bootsource framework ...

This patch seperates the imx independent from the arch independent code. The
following functions and enums are renamed:

- imx_bootsource() -> bootsource_get()
- imx_set_bootsource() -> bootsource_set()
- enum imx_bootsource -> enum bootsource

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/gpt'

partitons: add framework ...

so we can support multiple format

use filetpye to detect the parser to use

Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

console: consolidate common console code ...

The different console implementations share a good amount of code,
share this in console_common.c.

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

introduce console none support ...

this will allow to have no console support

Use full for bootstrap as we can save 6.5 KiB (barebox.bin) and
3.8 KiB (zbarebox.bin lzo) on at91sam9263 as example vs console simple

As on bootstrap we have often very limited size.

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

Add in-system barebox update infrastructure ...

Currently in-system update means to write an arbitrary file to
an arbitrary device. There is no sanity check if the flashed image
is of the right type or will fit onto the device. Furthermore some
SoCs need a special preparation step for their images before
flashing them.

This adds a barebox in-system update infrastructure. Boards can
register update handlers which know how to make the board bootable.
The available handlers can be listed to be able to select one,
different force levels give the user the chance to know it better.

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

defaultenv: dependencies fixes ...

When a build with a compressed default environment is done and then
environment compression is disabled, barebox_default_env.h is not
regenerated because its dependency (now barebox_default_env) is still
up to date. This results in a corrupt default environment.

This patch fixes this by adding a cmd_env_h and changing barebox_default_env.h
to FORCE. As a side effect barebox_default_env.h is no longer generated in
include/generated/ but in common/ as we have to add barebox_default_env.h to
$(targets) (extra-y).

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

Merge branch 'for-next/defaultenv-deps'

environment generation: Fix dependencies ...

The dependencies for generating the environment do not work properly:

- If files are removed from the defaultenv, a subsequent make will not
  update the default environment.
- If CONFIG_DEFAULT_ENVIRONMENT_PATH changes, the default environment
  also will not be regenerated.

This patch fixes this by introducing a cmd_env which has the content of
$(ENV_FILES) in the command so that the if_changed mechanism recognizes
a change when $(ENV_FILE) changes. This also results in a nice "  ENV "
string in the build process.

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

environment generation: remove unused CLEAN_FILES ...

The CLEAN_FILES in common/Makefile are unused. All generated files
are removed from the toplevel Makefile.

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