The binding states that a subnode containing partition subnodes
should have the name "partitions". Enforce this so that we do not
parse nodes with other names which may have partition descriptions
for other disks.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This fixes a regression in __of_find_path() for flash devices created by
the cadence-quadspi driver, which do not have 'dev->driver' set. Such
devices do not have 'dev->bus' set either, so we can use that to qualify
the existing test.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
If the chosen node does not exist, of_add_initrd fails to pass the
initrd to the kernel. Instead it should create the chosen node, just
like of_fixup_bootargs does.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The partitions now may be in a subnode of the actual device node.
Eventually go another step up in the hierarchy if required.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The new binding recommends to put the partitions into a subnode
with compatible "fixed-partitions". Add support for this binding.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
in __of_find_path it can happen that there is a device, but there
is no driver for this device because it hasn't been probed yet.
Return -ENODEV in this case to let the caller know that it has to
try later again.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
drivers/of/device.c has the implementation for of_match_device(), so
also include the header which has the prototype.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_tree_for_each_node_from() is supposed to iterate over all DT nodes
after the one pointed by the from parameter, but with the current
of_next_node() implementation we cannot access the root node.
Patch of_next_node() to point to root_node when from is NULL.
Doing that also simplifies users of of_tree_for_each_node_from() which
were duplicating the logic to point to the root_node when from is NULL.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_find_path() is a OF specific library function, so always
compile it when OF support is enabled.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Port of_match_device() and of_device_get_match_data() from Linux kernel
code.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some dts files for the Kernel specify a reserved memory area using the
/memreserve/ dtc directive. These entries get lost during
unflattening/flattening the device tree and are never passed to the
Kernel.
This patch fixes this behaviour. This is done by copying the entries
into a /memreserve node in the unflattened tree and moving them back
during flattening the tree. The entries added by barebox dynamically
are appended to the static entries from the original dtb.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Our asprintf and vasprintf have different prototypes than the glibc
functions. This causes trouble when we want to share barebox code
with userspace code. Change the prototypes for (v)asprintf to match
the glibc prototypes. Since the current (v)asprintf are convenient
to use change the existing functions to b(v)asprintf.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
printf now supports printing resource_size_t directly, convert
all users of the previously used PRINTF_CONVERSION_RESOURCE over
to %pa.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Originally it was intended to further extend the multi string property
device-path further with more elements, like for example a filename. It
turned out though that this is too complex and instead of further
extending the property we should instead create additional properties,
so this mechanism is removed with this patch to make the code simpler.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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>
In commit 75b682795e using a path that
has a partition description broke.
Fix this and simpfy the code some.
There is no need to loop over each string in the path property: it's
defined to have at most one parition description, no extant dts has
more than one, and how it would handle more than one didn't make sense
anyway.
Once not looping, __of_find_path() just needs the partition
description text, not both the original node and property name to look
it up from.
When using a partition description, don't lookup the cdev of the node
just to replace it with the partition's cdev.
Signed-off-by: Trent Piepho <tpiepho@kymetacorp.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds the function of_find_path_by_node(), which is similar to
of_find_path(), but it translates a device tree node into a barebox device path
directly.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch factors out the device detection logic into separate function, so
that it can be used from another function.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This imports DT helpers for MTD ECC step size and strength from
Linux kernel.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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>
This adds a device_node member to struct cdev and a function
to find a cdev by device_node.
This also removes the setting of cdev->dev->device_node in
the of partition parser. We must not set the device since it
may not refer to a partition but to a whole device with partitions.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In commit
d384b5639f of: Drop devicetree merge support
the signature of of_unflatten_dtb() was changed, but the inline documentation
was forgotten to adjust. This patch removes the left over "root" argument from
the doc.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds a flags argument to the of_find_path() function. The only flag
defined for now is OF_FIND_PATH_FLAGS_BB. When used on NAND devices, the
function returns the bad block aware device (the ".bb" device).
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch removes the LIST_HEAD of_partition_list and a struct definition from
the code. This was present but unused, since the file was added to barebox.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With deferred probing, -EPROBE_DEFER is not worth spilling an error.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_alias_get assumed that a DT path is always the full node path,
whic is not necessarily the case, as there are other valid path
descriptions. All of them are handled by of_find_node_by_path.
As there is already a preparsed list with all DT aliases that handles
this case properly we can simply reuse that one.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
If creating an AMBA device failed, maybe because AMBA support is
not compiled in, register the device as regular platform device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Ian Abbott
Philipp Zabel
Antony Pavlov
Boris Brezillon
Andrey Smirnov
Trent Piepho
Marc Kleine-Budde
Sebastian Hesselbarth
Jan Luebbe
Lucas Stach
Wadim Egorov