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2018-03-05libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>Masahiro Yamada
Thomas reported U-Boot failed to build host tools if libfdt-devel package is installed because tools include libfdt headers from /usr/include/ instead of using internal ones. This commit moves the header code: include/libfdt.h -> include/linux/libfdt.h include/libfdt_env.h -> include/linux/libfdt_env.h and replaces include directives: #include <libfdt.h> -> #include <linux/libfdt.h> #include <libfdt_env.h> -> #include <linux/libfdt_env.h> Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-01-28libfdt: migrate libfdt.h to a wrapper + U-Boot own codeMasahiro Yamada
There is tons of code duplication between lib/libfdt/libfdt.h and scripts/dtc/libfdt/libfdt.h. Evacuate the U-Boot own code to include/libfdt.h and remove lib/libfdt/libfdt.h. For host tools, <libfdt.h> should include scripts/dtc/libfdt/libfdt.h, which is already suitable for user-space. For compiling U-Boot, <linux/libfdt.h> should be included because we need a different libfdt_env.h . Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-01-28libfdt: move working_fdt and FDT_RAMDISK_OVERHEAD to include/libfdt.hMasahiro Yamada
libfdt_env.h exists to contain system-dependent defines: - typedef of fdt*_t - fdt*_to_cpu(), cpu_to_fdt* working_fdt and FDT_RAMDISK_OVERHEAD are unrelated to the environment, so they must get out of this header. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-11-06Do not attempt to use the systemwide libfdtJan Kundrát
U-Boot bundles a patched copy of libfdt, so it's wrong to attempt to include it <like/this>. This breaks the build for me when I have dtc fully installed in my host -- as happened earlier tonight with Buildroot, for example. There are several other occurrences throughout the code where '<libfdt' matches. I'm not modifying these because I have no clue why the <systemwide> include style is being used -- IMHO wrongly. Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
2017-06-02fdt: Move header files into lib/libfdtSimon Glass
These header files are actually part of libfdt. Move them there to make it easier to build pylibfdt and easier to merge changes from upstream. Update the license header to use SPDX at the same time. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-02fdt: Use SPDX format for licenses in the libfdt headersSimon Glass
These should follow the UBoot standard. Update them. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-10-23libfdt: Sync overlay with upstreamMaxime Ripard
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 <maxime.ripard@free-electrons.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-10-13libfdt: Drop inlining of fdt_path_offset()Simon Glass
The fdt_path_offset() function is not inlined in upstream libfdt. Adjust U-Boot's version to match. Signed-off-by: Simon Glass <sjg@chromium.org>
2016-10-13libfdt: Sync fdt_for_each_subnode() with upstreamSimon Glass
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 <sjg@chromium.org> Update to drivers/power/pmic/palmas.c: Signed-off-by: Keerthy <j-keerthy@ti.com> Change-Id: I6cc9021339bfe686f9df21d61a1095ca2b3776e8
2016-10-13libfdt: Bring in upstream stringlist functionsSimon Glass
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 <treding@nvidia.com> : 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 strings Signed-off-by: Simon Glass <sjg@chromium.org>
2016-10-13libfdt: Sync up with upstreamSimon Glass
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 <sjg@chromium.org>
2016-08-20libfdt: Add overlay application functionMaxime 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 <maxime.ripard@free-electrons.com>
2016-08-20libfdt: Add fdt_setprop_inplace_namelen_partialMaxime Ripard
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 <maxime.ripard@free-electrons.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-08-20libfdt: Add fdt_getprop_namelen_wMaxime Ripard
Add a function to retrieve a writeable property only by the first characters of its name. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-08-20libfdt: Add fdt_path_offset_namelenMaxime Ripard
Add a namelen variant of fdt_path_offset to retrieve the node offset using only a fixed number of characters. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-08-20libfdt: Add max phandle retrieval functionMaxime Ripard
Add a function to retrieve the highest phandle in a given device tree. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Stefan Agner <stefan@agner.ch> Acked-by: Simon Glass <sjg@chromium.org>
2016-08-20libfdt: Add iterator over propertiesMaxime Ripard
Implement a macro based on fdt_first_property_offset and fdt_next_property_offset that provides a convenience to iterate over all the properties of a given node. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-03-14libfdt: Add a function to write a property placeholderSimon Glass
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 <sjg@chromium.org>
2015-07-21fdt: Add fdt_first/next_region() functionsSimon Glass
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 <sjg@chromium.org>
2015-07-21fdt: Add a function to remove unused strings from a device treeSimon Glass
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 <sjg@chromium.org>
2015-07-20libfdt: fix description of fdt_get_string()Masahiro Yamada
Looks like this comment was copied from that of fdt_get_string_index(). Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Fixes: 5094eb408a5d ("fdt: Add functions to retrieve strings") Acked-by: Simon Glass <sjg@chromium.org>
2014-10-22fdt: Add a subnodes iterator macroThierry Reding
The fdt_for_each_subnode() iterator macro provided by this patch can be used to iterate over a device tree node's subnodes. At each iteration a loop variable will be set to the next subnode. Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-10-22fdt: Add functions to retrieve stringsThierry Reding
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 <treding@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-10-22fdt: Add a function to get the index of a stringThierry Reding
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 <treding@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-10-22fdt: Add a function to count stringsThierry Reding
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 <treding@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-08-09fdt: Sync up with libfdtSimon Glass
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 <sjg@chromium.org>
2013-09-20Fix some obvious typos across multiple subsystems.Robert P. J. Day
Typoes fixed: "partion" -> "partition" "retrive", "retreive" -> "retrieve" "th" -> "to" Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
2013-06-26libfdt: Add fdt_find_regions()Simon Glass
Add a function to find regions in device tree given a list of nodes to include and properties to exclude. See the header file for full documentation. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-05-14libfdt: Add fdt_next_subnode() to permit easy subnode iterationSimon Glass
Iterating through subnodes with libfdt is a little painful to write as we need something like this: for (depth = 0, count = 0, offset = fdt_next_node(fdt, parent_offset, &depth); (offset >= 0) && (depth > 0); offset = fdt_next_node(fdt, offset, &depth)) { if (depth == 1) { /* code body */ } } Using fdt_next_subnode() we can instead write this, which is shorter and easier to get right: for (offset = fdt_first_subnode(fdt, parent_offset); offset >= 0; offset = fdt_next_subnode(fdt, offset)) { /* code body */ } Also, it doesn't require two levels of indentation for the loop body. Signed-off-by: Simon Glass <sjg@chromium.org> (Cherry-picked from dtc commit 4e76ec79) Acked-by: Gerald Van Baren <vanbaren@cideas.com>
2013-05-10Fix typoFrançois Revol
Ref: DTC commit cc11e522 Signed-off-by: François Revol <revol@free.fr>
2013-05-10Export fdt_stringlist_contains()Simon Glass
This function is useful outside libfdt, so export it. Ref: DTC commit b7aa300e Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2013-02-07libfdt: update from upstream dtc commit 142419eKim Phillips
commit 142419e "dtc/libfdt: sparse fixes", for u-boot's libfdt copy. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Cc: Jerry Van Baren <gvb.uboot@gmail.com>
2012-10-15libfdt: Add helper function to create a trivial, empty treeGerald Van Baren
The libfdt read/write functions are now usable enough that it's become a moderately common pattern to use them to build and manipulate a device tree from scratch. For example, we do so ourself in our rw_tree1 testcase, and qemu is starting to use this model when building device trees for some targets such as e500. However, the read/write functions require some sort of valid tree to begin with, so this necessitates either having a trivial canned dtb to begin with or, more commonly, creating an empty tree using the serial-write functions first. This patch adds a helper function which uses the serial-write functions to create a trivial, empty but complete and valid tree in a supplied buffer, ready for manipulation with the read/write functions. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> From git://git.jdl.com/software/dtc.git patch hash be6026838 with adaptations to include/libfdt.h and lib/libfdt/Makefile for the U-Boot environment. Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
2012-10-15libfdt: Add helpers for 64-bit integer propertiesDavid Gibson
In device trees in the world, properties consisting of a single 64-bit integer are not as common as those consisting of a single 32-bit, cell sized integer, but they're common enough that they're worth including convenience functions for. This patch adds helper wrappers of fdt_setprop_inplace(), fdt_setprop() and fdt_appendprop() for handling 64-bit integer quantities in properties. For better consistency with the names of these new *_u64() functions we also add *_u32() functions as alternative names for the existing *_cell() functions handling 32-bit integers. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2012-10-15libfdt: Add support for appending the values to a existing propertyMinghuan Lian
Some properties may contain multiple values, these values may need to be added to the property respectively. this patch provides this functionality. The main purpose of fdt_append_prop() is to append the values to a existing property, or create a new property if it dose not exist. Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2011-07-14libfdt: Implement property iteration functionsDavid Gibson
For ages, we've been talking about adding functions to libfdt to allow iteration through properties. So, finally, here are some. I got bogged down on this for a long time because I didn't want to expose offsets directly to properties to the callers. But without that, attempting to make reasonable iteration functions just became horrible. So eventually, I settled on an interface which does now expose property offsets. fdt_first_property_offset() and fdt_next_property_offset() are used to step through the offsets of the properties starting from a particularly node offset. The details of the property at each offset can then be retrieved with either fdt_get_property_by_offset() or fdt_getprop_by_offset() which have interfaces similar to fdt_get_property() and fdt_getprop() respectively. No explicit testcases are included, but we do use the new functions to reimplement the existing fdt_get_property() function. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> This was extracted from the DTC commit: 73dca9ae0b9abe6924ba640164ecce9f8df69c5a Mon Sep 17 00:00:00 2001 Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
2009-04-01libfdt: Fix C++ compile-time cast error on gnu 4.2.1Laurent Gregoire
Allow the inclusion of libfdt.h in C++ source. Signed-off-by: Laurent Gregoire <laurent.gregoire@tomtom.com> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2008-10-04libfdt: Fix error in documentation for fdt_get_alias_namelen()Gerald Van Baren
Oops, screwed up the function name in the documenting comment for this function. Trivial correction in this patch. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Gerald Van Baren <vanbaren@cideas.com>
2008-10-02libfdt: Add function to explicitly expand aliasesDavid Gibson
Kumar has already added alias expansion to fdt_path_offset(). However, in some circumstances it may be convenient for the user of libfdt to explicitly get the string expansion of an alias. This patch adds a function to do this, fdt_get_alias(), and uses it to implement fdt_path_offset(). Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-10-01Fix an overflow case in fdt_offset_ptr() detected by GCC 4.3.Jon Loeliger
Using Gcc 4.3 detected this problem: ../dtc/libfdt/fdt.c: In function 'fdt_next_tag': ../dtc/libfdt/fdt.c:82: error: assuming signed overflow does not occur when assuming that (X + c) < X is always false To fix the problem, treat the offset as an unsigned int. The problem report and proposed fix were provided by Steve Papacharalambous <stevep@freescale.com>. Signed-off-by: Jon Loeliger <jdl@freescale.com>
2008-08-24libfdt: Implement fdt_get_property_namelen() and fdt_getprop_namelen()David Gibson
As well as fdt_subnode_offset(), libfdt includes an fdt_subnode_offset_namelen() function that takes the subnode name to look up not as a NUL-terminated string, but as a string with an explicit length. This can be useful when the caller has the name as part of a longer string, such as a full path. However, we don't have corresponding 'namelen' versions for fdt_get_property() and fdt_getprop(). There are less obvious use cases for these variants on property names, but there are circumstances where they can be useful e.g. looking up property names which need to be parsed from a longer string buffer such as user input or a configuration file, or looking up an alias in a path with IEEE1275 style aliases. So, since it's very easy to implement such variants, this patch does so. The original NUL-terminated variants are, of course, implemented in terms of the namelen versions. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-08-24libfdt: Improve documentation in libfdt.hWolfram Sang
Fix a few typos and mistakes. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: David Gibson <david@gibson.dropbear.id.au>
2008-08-24dtc: Enable and fix -Wcast-qual warningsDavid Gibson
Enabling -Wcast-qual warnings in dtc shows up a number of places where we are incorrectly discarding a const qualification. There are also some places where we are intentionally discarding the 'const', and we need an ugly cast through uintptr_t to suppress the warning. However, most of these are pretty well isolated with the *_w() functions. So in the interests of maximum safety with const qualifications, this patch enables the warnings and fixes the existing complaints. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Gerald Van Baren <vanbaren@cideas.com>
2008-05-21Big white-space cleanup.Wolfgang Denk
This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-03-18libfdt: Add and use a node iteration helper function.David Gibson
This patch adds an fdt_next_node() function which can be used to iterate through nodes of the tree while keeping track of depth. This function is used to simplify the iteration code in a lot of other functions, and is also exported for use by library users. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-03-18libfdt: Add fdt_set_name() functionDavid Gibson
This patch adds an fdt_set_name() function to libfdt, mirroring fdt_get_name(). This is a r/w function which alters the name of a given device tree node. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-01-08libfdt: Add more documentation (patch the seventh)David Gibson
This patch adds more documenting comments to libfdt.h. Specifically, these document the read/write functions (not including fdt_open_into() and fdt_pack(), for now). Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-01-08libfdt: Add more documentation (patch the sixth)David Gibson
This patch adds some more documenting comments to libfdt.h. Specifically this documents all the write-in-place functions. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2008-01-02Fix compile problem introduced by "cleanup" commit 3dfd708cWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-01-02Minor coding style cleanup.Wolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de>