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2017-06-02fdt: Stop building the old python libfdt moduleSimon Glass2-150/+0
This is no-longer needed, so stop building it. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-02fdt: Rename existing python libfdt moduleSimon Glass2-5/+4
Now that this module has been accepted upstream we should stop using the local U-Boot one. In preparation for this, rename it to indicate it is for legacy use. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-02fdt: Allow swig options to be provided by MakefileSimon Glass1-2/+2
U-Boot needs to provide some swig include directories. Add this feature. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-02fdt: Move header files into lib/libfdtSimon Glass2-0/+2211
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: Add Python bindingsSimon Glass2-0/+512
An early version of this is available upstream. Bring it in as a starting point. This is from dtc upstream commit e56f2b0. Future work will plumb it into dtoc and remove the now-unnecessary local libraries. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-13fdtgrep: Cope with the /aliases node being lastSimon Glass1-5/+35
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 <sjg@chromium.org> Tested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-04-10libfdt: fix build with Python 3Stefan Agner1-1/+1
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 <stefan.agner@toradex.com> Acked-by: Simon Glass <sjg@chromium.org>
2017-04-10fdt: Bring in changes from v1.4.4Simon Glass3-12/+17
This a few minor changes down from upstream since the last sync. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-14libfdt: Correct fdt handling of overlays without fixups and base trees ↵David Gibson1-1/+6
without symbols 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 <david@gibson.dropbear.id.au> Signed-off-by: Stefan Agner <stefan.agner@toradex.com> Acked-by: Simon Glass <sjg@chromium.org>
2016-10-24libfdt: fix fdt_stringlist_search()Masahiro Yamada1-1/+1
If fdt_getprop() fails, negative error code should be returned. [ DTC commit: daa75e8fa5942caa8e97931aed3a1ee0b7edd74b ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-10-24libfdt: fix fdt_stringlist_count()Masahiro Yamada1-1/+1
If fdt_getprop() fails, negative error code should be returned. [ DTC commit: e28eff5b787adb3f461d1653598818b2f1f25a73 ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-10-23libfdt: Sync overlay with upstreamMaxime Ripard2-73/+129
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 Glass1-0/+5
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 Glass1-4/+4
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 Glass1-40/+64
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 Glass3-10/+10
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>
2016-10-13libfdt: Fix undefined behaviour in fdt_offset_ptr()David Gibson1-6/+7
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 <dcb314@hotmail.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Simon Glass <sjg@chromium.org>
2016-09-24libfdt: simplify fdt_del_mem_rsv()Masahiro Yamada1-5/+1
The variable "err" is unneeded. [ Device Tree Compiler commit: 36fd7331fb11276c09a6affc0d8cd4977f2fe100 ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Simon Glass <sjg@chromium.org>
2016-09-19dtoc: Support finding the offset of a propertySimon Glass1-0/+3
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 <sjg@chromium.org>
2016-09-19dtoc: Support packing the device treeSimon Glass1-0/+1
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 <sjg@chromium.org>
2016-09-19dtoc: Support deleting device tree propertiesSimon Glass1-0/+12
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 <sjg@chromium.org>
2016-09-19dtoc: Move to using bytearraySimon Glass1-0/+8
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 <sjg@chromium.org>
2016-08-20tests: Introduce DT overlay testsMaxime Ripard1-49/+262
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 <sjg@chromium.org> Acked-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-08-20cmd: fdt: add fdt overlay application subcommandMaxime Ripard1-7/+7
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 <stefan@agner.ch> Acked-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-08-20libfdt: Add overlay application functionMaxime Ripard2-0/+407
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 Ripard1-4/+25
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_path_offset_namelenMaxime Ripard1-8/+10
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: Fix separator spellingMaxime Ripard1-4/+4
The function fdt_path_next_seperator had an obvious mispell. Fix it. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-08-20libfdt: Add max phandle retrieval functionMaxime Ripard1-0/+26
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>
2016-07-15dm: Add a more efficient libfdt librarySimon Glass3-0/+141
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 <sjg@chromium.org>
2016-06-20lib/libfdt/: General aesthetic/style fixes.Robert P. J. Day11-97/+109
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 "! <var>" with "!<var>". * Replace "libfdt_env.h" with <libfdt_env.h>. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Acked-by: Simon Glass <sjg@chromium.org>
2016-03-14libfdt: Add a function to write a property placeholderSimon Glass1-2/+14
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>
2015-11-04fdt: Correct handling of alias regionsSimon Glass1-1/+1
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 <sjg@chromium.org> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-07-22fdt: Add fdt_first/next_region() functionsSimon Glass2-1/+493
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>
2015-07-22fdt: Add a function to remove unused strings from a device treeSimon Glass1-0/+32
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 error code of fdt_count_strings()Masahiro Yamada1-1/+1
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 <yamada.masahiro@socionext.com> Fixes: bc4147ab2d69 ("fdt: Add a function to count strings") Acked-by: Simon Glass <sjg@chromium.org>
2015-07-20libfdt: fix error code of fdt_get_string_index()Masahiro Yamada1-1/+1
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 <yamada.masahiro@socionext.com> Fixes: 5094eb408a5d ("fdt: Add functions to retrieve strings") Acked-by: Simon Glass <sjg@chromium.org>
2015-04-24fdt: Fix handling of paths with options in themHans de Goede1-3/+22
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 <hdegoede@redhat.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-12-08libfdt: move CONFIG_OF_LIBFDT and CONFIG_FIT to lib/MakefileMasahiro Yamada1-4/+1
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-10-23fdt: Add functions to retrieve stringsThierry Reding1-0/+30
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>
2014-10-23fdt: Add a function to get the index of a stringThierry Reding1-0/+26
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>
2014-10-23fdt: Add a function to count stringsThierry Reding1-0/+20
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 Glass5-7/+95
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>
2014-06-19libfdt: Fix segfault when calling fit_check_format() on corrupt FIT imagesJon Nalley1-1/+1
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 <trini@ti.com>
2013-10-31lib: convert makefiles to Kbuild styleMasahiro Yamada1-25/+2
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-10-15Coding Style cleanup: remove trailing empty linesWolfgang Denk1-1/+0
Signed-off-by: Wolfgang Denk <wd@denx.de>
2013-08-10libfdt: SPDX-License-Identifier: GPL-2.0+ BSD-2-ClauseRoger Meier8-368/+8
Signed-off-by: Roger Meier <roger@bufferoverflow.ch> Acked-by: Wolfgang Denk <wd@denx.de>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk1-17/+1
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-06-26libfdt: Add fdt_find_regions()Simon Glass1-0/+129
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 Glass1-0/+28
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>
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