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The environment nodes do not have a reg property and as such should not
have a @0 suffix. Newer dtc warns about this, so remove it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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After an update to a newer barebox version with an enabled state
framework, existing data in storage memories could be overwritten.
Add a new property to check in front of every write task, if the meta
magic field only contains the magic number, zeros or ones.
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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underlaying -> underlying
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Several blocks cannot be sensibly highlighted, so change the highliting
to 'none'. Fixes many warnings in building the documentation.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Change 119f92b27e131a0cb506fe8d8bffe8010fb14a3d already tried to fix it, but
forgets the 'direct' usecase.
The 'backend-storage-type' node is optional. Its default depends on the
capability of the used backend memory, which means "circular" or NULL.
The latter defaults to 'direct' in the routines.
If it is NULL, the devicetree fixup routine skips exporting a
'backend-storage-type' node to the kernel's devicetree.
But currently if the 'backend-storage-type' node is explicitly given as
'direct', it will be skipped silently and set to NULL instead. In this
case the user of the 'barebox-state' tool then ends up with the warning:
"No backend-storage-type found, using default"
which is annoying, because it was given.
Storing the given value will still use a NULL if the
'backend-storage-type' node isn't defined, but stores everything else if
it is defined. Then the 'backend-storage-type' node is present in the
kernel's devicetree as well.
Signed-off-by: Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Many links between sections and examples were added to give the developer
the help to get it work.
Signed-off-by: Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The backend property must contain a phandle, so use a phandle
in the example.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The userspace barebox-state utility gets confused when no alias exists.
Make the alias mandatory, so that people make it right^tm without having
to ask.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The '@0' suffix is for nodes which have a reg property, so
do not use this suffix in the state example node which does
not have a reg property.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Default to the new circular storage format which saves erase
cycles. The old format can still be selected with
backend-storage-type = "noncircular".
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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All other methods are broken for some time already: When starting the
kernel the state code rewrites the state node in the device tree and
replaced the "backend" property with a phandle - even when the target
can't be described as a phandle. Since using phandles is the nicest way
to point to the storage device anyway remove the other methods.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Only fixed length strings are supported. Make the wording clearer.
Signed-off-by: Stefan Lengfeld <s.lengfeld@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Current barebox,environment node only allows specifying a raw device or
partition to load an environment from. Some boards, like OMAP and
SoCFPGA, instead want to use a file located in a FAT filesystem.
Extend the device tree bindings with a new property 'file-path' that
will trigger this behavior.
This allows any board using this driver to get the env from a file or
from a raw device, instead of each machine type being either raw
device only or file only.
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds hmac support to the raw backend.
With this patch, modifications of the header or data of a state partition can
be detected, as the hmac woudln't match anymore. The hmac relies on a shared
secret, which is requested from the keystore, with keystore_get_secret() using
the name of the state partition as the "name" of the secret.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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We could only point to partitions in the device tree by using
&norflash, "partname:barebox-environment". Allow to point to the
partition directly without having to parse the partition labels.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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It's "uint32" not "u32" and we use integers for the "enum32" defaults.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Cc: Jan Luebbe <jluebbe@debian.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This patch adds a framework to describe, access, store and restore a set of
variables. A state variable set can be fully described in a devicetree node.
This node could be part of the regular devicetree blob or it could be an extra
devicetree solely for the state. The state variable set contains variables of
different types and a place to store the variable set.
For more information see:
Documentation/devicetree/bindings/barebox/barebox,state.rst
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Adjusted Sphinx markup for devicetree bindings pages.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This is a rewrite of the Documentation in reStructuredText format using
Sphinx as build system, see http://sphinx-doc.org/.
The documentation is built into static html pages with 'make docs'.
The pages can be found under Documentation/html after building.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Remove the barebox devicetree documentation. It will
be replaced with sphinx based documentation later.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds the possibility to configure the place for the environment
from the devicetree and to partition devices from the devicetree.
Configuration has the general form of devices with a regular compatible
property. This allows to later add additional drivers or drivers with
different behaviour (for example to add support for redundant environment).
The configuration is all in the /chosen/barebox/ hierarchy of the
devicetree. This separates the configuration from the hardware
description. Also it makes it possible to store the configuration
in a completely separate devicetree (or devicetree overlay). For
the same reason all configuration is done using nodepathes rather
than phandles.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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