14 Apr, 2017
1 commit
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With skeleton.dtsi being dropped it is more likely that the /aliases node
will be last in the device tree. Update fdtgrep to handle this.Signed-off-by: Simon Glass
Tested-by: Masahiro Yamada
11 Apr, 2017
2 commits
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For some reason Python 3 seems to think it does not need to build
the library. Using the --force parameter makes sure that the library
gets built always. This is especially important since we move the
library in the next step of the Makefile, hence forcing a rebuild
every time the higher level Makefile triggers a rebuild is required
to make sure the library is always there.Signed-off-by: Stefan Agner
Acked-by: Simon Glass -
This a few minor changes down from upstream since the last sync.
Signed-off-by: Simon Glass
14 Jan, 2017
1 commit
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The fdt_overlay_apply() function purports to support the edge cases where
an overlay has no fixups to be applied, or a base tree which has no
symbols (the latter can only work if the former is also true). However it
gets it wrong in a couple of small ways:* In the no fixups case, it doesn't fail immediately, but will attempt
fdt_for_each_property_offset() giving -FDT_ERR_NOTFOUND as the node
offset, which will fail. Instead it should succeed immediately, since
there's nothing to do.
* In the case of no symbols, it again doesn't fail immediately. However
if there is an actual fixup it will fail with an unexpected error,
because -FDT_ERR_NOTFOUND is passed to fdt_getprop() when attempting to
look up the symbols. We should instead return -FDT_ERR_NOTFOUND
directly.Both of these errors lead to the code returning misleading error codes in
failing cases.[ DTC commit: 7d8ef6e1db9794f72805a0855f4f7f12fadd03d3 ]
Signed-off-by: David Gibson
Signed-off-by: Stefan Agner
Acked-by: Simon Glass
24 Oct, 2016
3 commits
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If fdt_getprop() fails, negative error code should be returned.
[ DTC commit: daa75e8fa5942caa8e97931aed3a1ee0b7edd74b ]
Signed-off-by: Masahiro Yamada
Signed-off-by: David Gibson -
If fdt_getprop() fails, negative error code should be returned.
[ DTC commit: e28eff5b787adb3f461d1653598818b2f1f25a73 ]
Signed-off-by: Masahiro Yamada
Signed-off-by: David Gibson -
Now that the overlay code has been merge upstream, update our copy to
what's been merged, since a significant number of issues have been fixed
during the merge process.Signed-off-by: Maxime Ripard
Acked-by: Simon Glass
14 Oct, 2016
5 commits
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The fdt_path_offset() function is not inlined in upstream libfdt. Adjust
U-Boot's version to match.Signed-off-by: Simon Glass
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The signature for this macro has changed. Bring in the upstream version and
adjust U-Boot's usages to suit.Signed-off-by: Simon Glass
Update to drivers/power/pmic/palmas.c:
Signed-off-by: KeerthyChange-Id: I6cc9021339bfe686f9df21d61a1095ca2b3776e8
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These have now landed upstream. The naming is different and in one case the
function signature has changed. Update the code to match.This applies the following upstream commits by
Thierry Reding :604e61e fdt: Add functions to retrieve strings
8702bd1 fdt: Add a function to get the index of a string
2218387 fdt: Add a function to count stringsSigned-off-by: Simon Glass
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This includes small changes to the following functions, from upstream
commit 6d1832c:- fdt_get_max_phandle() (upstream commit 84e0e134)
- fdt_node_check_compatible (upstream commit 53bf130b)
- fdt_setprop_inplace_namelen_partial() to remove useless brackets and
use idx instead of index
- _fdt_resize_property() to use idx instead of index
- _fdt_splice() (upstream commit d4c7c25c)It also includes various typo fixes in libfdt.h
Signed-off-by: Simon Glass
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Using pointer arithmetic to generate a pointer outside a known object is,
technically, undefined behaviour in C. Unfortunately, we were using that
in fdt_offset_ptr() to detect overflows.To fix this we need to do our bounds / overflow checking on the offsets
before constructing pointers from them.Reported-by: David Binderman
Signed-off-by: David Gibson
Signed-off-by: Simon Glass
24 Sep, 2016
1 commit
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The variable "err" is unneeded.
[ Device Tree Compiler commit: 36fd7331fb11276c09a6affc0d8cd4977f2fe100 ]
Signed-off-by: Masahiro Yamada
Signed-off-by: David Gibson
Acked-by: Simon Glass
19 Sep, 2016
4 commits
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Add a way to find the byte offset of a property within the device tree. This
is only supported with the normal libfdt implementation since fdtget does
not provide this information.Signed-off-by: Simon Glass
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After any node/property deletion the device tree can be packed to remove
spare space. Add a way to perform this operation.Note that for fdt_fallback, fdtput automatically packs the device tree after
deletion, so no action is required here.Signed-off-by: Simon Glass
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Add support for deleting a device tree property. With the fallback
implementation this uses fdtput. With libfdt it uses the API call and
updates the offsets afterwards.Signed-off-by: Simon Glass
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Since we want to be able to change the in-memory device tree using libfdt,
use a bytearray instead of a string. This makes interfacing from Python
easier.Signed-off-by: Simon Glass
20 Aug, 2016
7 commits
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This adds a bunch of unit tests for the "fdt apply" command.
They've all been run successfully in the sandbox. However, as you still
require an out-of-tree dtc with overlay support, this is disabled by
default.Acked-by: Simon Glass
Acked-by: Pantelis Antoniou
Signed-off-by: Maxime Ripard -
The device tree overlays are a good way to deal with user-modifyable
boards or boards with some kind of an expansion mechanism where we can
easily plug new board in (like the BBB or the raspberry pi).However, so far, the usual mechanism to deal with it was to have in Linux
some driver detecting the expansion boards plugged in and then request
these overlays using the firmware interface.That works in most cases, but in some cases, you might want to have the
overlays applied before the userspace comes in. Either because the new
board requires some kind of an early initialization, or because your root
filesystem is accessed through that expansion board.The easiest solution in such a case is to simply have the component before
Linux applying that overlay, removing all these drawbacks.Reviewed-by: Stefan Agner
Acked-by: Pantelis Antoniou
Acked-by: Simon Glass
Signed-off-by: Maxime Ripard -
The device tree overlays are a good way to deal with user-modifyable
boards or boards with some kind of an expansion mechanism where we can
easily plug new board in (like the BBB, the Raspberry Pi or the CHIP).Add a new function to merge overlays with a base device tree.
Signed-off-by: Maxime Ripard
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Add a function to modify inplace only a portion of a property..
This is especially useful when the property is an array of values, and you
want to update one of them without changing the DT size.Signed-off-by: Maxime Ripard
Acked-by: Simon Glass -
Add a namelen variant of fdt_path_offset to retrieve the node offset using
only a fixed number of characters.Reviewed-by: Simon Glass
Signed-off-by: Maxime Ripard -
The function fdt_path_next_seperator had an obvious mispell. Fix it.
Signed-off-by: Maxime Ripard
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Add a function to retrieve the highest phandle in a given device tree.
Signed-off-by: Maxime Ripard
Reviewed-by: Stefan Agner
Acked-by: Simon Glass
15 Jul, 2016
1 commit
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Add a Python version of the libfdt library which contains enough features to
support the dtoc tool. This is only a very bare-bones implementation. It
requires the 'swig' to build.Signed-off-by: Simon Glass
20 Jun, 2016
1 commit
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A number of style fixes across the files in this directory, including:
* Correct invalid kernel-doc content.
* Tidy up massive comment in fdt_region.c.
* Use correct spelling of "U-Boot".
* Replace tests of "! " with "!".
* Replace "libfdt_env.h" with .Signed-off-by: Robert P. J. Day
Acked-by: Simon Glass
15 Mar, 2016
1 commit
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The existing function to add a new property to a tree being built requires
that the entire contents of the new property be passed in. For some
applications it is more convenient to be able to add the property contents
later, perhaps by reading from a file. This avoids double-buffering of the
contents.Add a new function to support this and adust the existing fdt_property() to
use it.Signed-off-by: Simon Glass
04 Nov, 2015
1 commit
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At present the last four bytes of the alias region are dropped in
the case where the last alias is included. This results in a corrupted
device tree. Fix this.Signed-off-by: Simon Glass
Signed-off-by: Michal Simek
22 Jul, 2015
2 commits
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These have been sent upstream but not accepted to libfdt. For now, bring
these into U-Boot to enable fdtgrep to operate. We will use fdtgrep to
cut device tree files down for SPL.Signed-off-by: Simon Glass
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Property names are stored in a string table. When a node property is
removed, the string table is not updated since other nodes may have a
property with the same name.Thus it is possible for the string table to build up a number of unused
strings. Add a function to remove these. This works by building a new device
tree from the old one, adding strings one by one as needed.Signed-off-by: Simon Glass
20 Jul, 2015
2 commits
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Currently, this function returns a positive value on error,
so we never know whether this function has succeeded or failed.For example, if the given property is not found, fdt_getprop()
returns -FDT_ERR_NOTFOUND, and then this function inverts it,
i.e., returns FDT_ERR_NOTFOUND (=1).Signed-off-by: Masahiro Yamada
Fixes: bc4147ab2d69 ("fdt: Add a function to count strings")
Acked-by: Simon Glass -
As mentioned in the comment block in include/libfdt.h,
fdt_get_string_index() is supposed to return a negative value
on error.Signed-off-by: Masahiro Yamada
Fixes: 5094eb408a5d ("fdt: Add functions to retrieve strings")
Acked-by: Simon Glass
24 Apr, 2015
1 commit
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After syncing the sunxi dts files with the upstream kernel dm/fdt sunxi
builds would no longer boot.The problem is that stdout-path is now set like this in the upstream dts
files: stdout-path = "serial0:115200n8". The use of options in of-paths,
either after an alias name, or after a full path, e.g. stdout-path =
"/soc@01c00000/serial@01c28000:115200", is standard of usage, but something
which the u-boot dts code so far did not handle.This commit fixes this, adding support for both path formats.
Signed-off-by: Hans de Goede
Acked-by: Simon Glass
08 Dec, 2014
1 commit
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Signed-off-by: Masahiro Yamada
23 Oct, 2014
3 commits
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Given a device tree node, a property name and an index, the new function
fdt_get_string_index() will return in an output argument a pointer to
the index'th string in the property's value.The fdt_get_string() is a shortcut for the above with the index being 0.
Signed-off-by: Thierry Reding
Acked-by: Simon Glass -
Given a device tree node and a property name, the new fdt_find_string()
function will look up a given string in the string list contained in the
property's value and return its index.Signed-off-by: Thierry Reding
Acked-by: Simon Glass -
Given a device tree node and a property name, the fdt_count_strings()
function counts the number of strings found in the property value.Signed-off-by: Thierry Reding
Acked-by: Simon Glass
09 Aug, 2014
1 commit
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This brings in changes up to commit f9e91a48 in the libfdt repo.
Mostly this is whitespace/minor changes. But there are a few new
features:- fdt_size_cells() and fdt_address_cells()
- fdt_resize()Signed-off-by: Simon Glass
19 Jun, 2014
1 commit
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It has been observed that fit_check_format() will fail when passed a
corrupt FIT image. This was tracked down to _fdt_string_eq():
return (strlen(p) == len) && (memcmp(p, s, len) == 0);In the case of a corrupt FIT image one can't depend on 'p' being NULL
terminated. I changed it to use strnlen() to fix the issue.Signed-off-by: Tom Rini
01 Nov, 2013
1 commit
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Signed-off-by: Masahiro Yamada