of: fix typos ...

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

of: fix how an initrd is passed to Linux ...

Linux expects linux,initrd-end to contain the first unused address. As
this doesn't match the end semantic used by barebox (i.e. end contains
the last used address) adding one is necessary.

Without this change Linux fails for me to correctly extract a gzipped
cpio archive provided as initrd.

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

of: make locally used functions static ...

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

of: remove unused libfdt ...

Now that we are completely independent of libfdt remove the unused
code.

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

of: make value of property in of_new_property optional ...

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

of: Add of property write functions for u32 ...

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

of: move flat devicetree functions to separate file ...

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

of: make flatten independent of libfdt ...

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

of: make unflatten independent of libfdt ...

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

of: Add initrd helper ...

Add a helper to set the initrd properties in the unflattened tree.

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

of: Add root node argument to of_find_node_by_path ...

This makes of_find_node_by_path usable with multiple trees.

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

of: let of_unflatten_dtb return the unflattened tree ...

In order to be able to handle multiple devicetrees, do not assume
the tree to be unflattened is the barebox internal one. Instead,
just return a pointer to it and assign the barebox internal root_node
external to the unflatten function.

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

of: Add of_set_property and of_create_node ...

Add functions to create a new device node and to create/set
a new property based on the nodepath.

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

of: remove allnodes list ...

The allnodes list makes it hard to handle multiple devicetrees. Having
a list to iterate over all nodes of a tree is still good to have though.
This patch uses the list_head of the root node as the head of the list.
This way the root node is no longer part of the list, but when iterating
over a tree the root node is not interesting anyway.

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

of: Let of_find_node_by_path iterate over tree ...

of_find_node_by_path iterates over the allnodes list. Depending on
where the node we look for is, this can be significantly slower than
using the tree structure to look for a node, so iterate over the tree
instead.

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

of: removed unused variables ...

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

of: export of_find_child ...

of_find_child is a useful function. Export it and rename it to
of_find_child_by_name.

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

of: unflatten: allocate root node explicitly ...

By doing so of_new_node does not depend on the global root_node
anymore.

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

Merge branch 'for-next/highbank'

of_add_memory: check the device_type is memory ...

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

of: make of_add_memory available for other board ...

so when the first stage booloader of firmware provide the dtb
we can use it to probe the memory

also allow to print what we probe

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>

amba: add oftree probe support ...

move ARM_AMBA Kconfig to drivers/amba/Kconfig

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

of: speed up unflatten ...

We calculate the full path of the current node using fdt_get_path which
takes a lot of time since libfdt has to iterate over the dtb several times.
Speed this up by creating and using a of_find_child function which does
not have to iterate over the whole tree but only over its direct children.
On an i.MX51 board this speeds up unflatten the tree from 60ms to 3.7ms.

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

of: rename new_device_node to of_new_node and export it ...

of_new_node now takes the parent node and the name as argument and
creates a new node. This simplifies the caller and also makes the
function useful for others, so export it.

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

of: add of_delete_property ...

This adds a function to delete a property from the currently loaded
devicetree. Also export new_property as of_new_property.

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

of: unflatten: allow overlay dtbs ...

This implements overlaying a currently loaded dtb with another dtb.
We used to return -EBUSY when a oftree is currently loaded. Instead
of doing this, check if a node already exists before creating a new
one. Similarly, if a property already exists, just overwrite the
value instead of creating a new property.

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

of: Add support for converting the unflattened tree back to a dtb ...

We already have support for unflattening the devicetree. This patch
adds support for converting it back to a dtb.

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

of: rename of_parse_dtb to of_unflatten_dtb ...

The process of unflatten the device tree is known from the kernel,
so rename the function, because that's what it does.

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

of: return root node when looking for a node with path / ...

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

of of_free: remove old node from allnodes list ...

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