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When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have multiple licenses (in
these cases, dual license) declared in the SPDX-License-Identifier tag.
In this case we change from listing "LICENSE-A LICENSE-B" or "LICENSE-A
or LICENSE-B" or "(LICENSE-A OR LICENSE-B)" to "LICENSE-A OR LICENSE-B"
as per the Linux Kernel style document. Note that parenthesis are
allowed so when they were used before we continue to use them.
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
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When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
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fdt_region.c does not depend on anything in libfdt_internal.h
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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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>
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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>
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The only difference between scripts/dtc/libfdt/fdt_rw.c and
lib/libfdt/fdt_rw.c is fdt_remove_unused_strings().
It is only used by fdtgrep, so we do not need to compile it for U-Boot
image. Move it to tools/libfdt/fdw_rw.c so that lib/libfdt/fdt_rw.c
can be a wrapper of scripts/dtc/libfdt/fdt_rw.c.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Now, lib/libfdt/fdt_wip.c is the same as scripts/dtc/libfdt/fdt_wip.c
Change the former to a wrapper of the latter.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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All the other fdt_*_region() functions are located in fdt_region.c,
while only fdt_find_regions() was added to fdt_wip.c, strangely.
Move it to the suitable place.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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lib/libfdt/ and scripts/dtc/libfdt have the same copies for the
followings 6 files:
fdt.c fdt_addresses.c fdt_empty_tree.c fdt_overlay.c fdt_strerr.c
fdt_sw.c
Make them a wrapper of scripts/dtc/libfdt/*. This is exactly what
Linux does to sync libfdt. In order to make is possible, import
<linux/libfdt.h> and <linux/libfdt_env.h> from Linux 4.14-rc5.
Unfortunately, U-Boot locally modified the following 3 files:
fdt_ro.c fdt_wip.c fdt_rw.c
The fdt_region.c is U-Boot own file.
I did not touch them in order to avoid unpredictable impact.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Fortunately, U-Boot did not modify libfdt_internal.h locally.
Change it to a wrapper of scripts/dtc/libfdt/fdt.h, which will be
periodically synced with the upstream DTC (or kernel).
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Fortunately, U-Boot did not modify fdt.h locally.
Change it to a wrapper of scripts/dtc/libfdt/fdt.h, which will be
periodically synced with the upstream DTC (or kernel).
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The pylibfdt is used by dtoc (and, indirectly by binman), but there
is no reason why it must be generated in the tools/ directory.
Recently, U-Boot switched over to the bundled DTC, and the directory
structure under scripts/dtc/ now mirrors the upstream DTC project.
So, scripts/dtc/pylibfdt is the best location.
I also rewrote the Makefile in a cleaner Kbuild style.
The scripts from the upstream have been moved as follows:
lib/libfdt/pylibfdt/setup.py -> scripts/dtc/pylibfdt/setup.py
lib/libfdt/pylibfdt/libfdt.i -> scripts/dtc/pylibfdt/libfdt.i_shipped
The .i_shipped is coped to .i during building because the .i must be
located in the objtree when we build it out of tree.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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This patch enables an overlay to refer to a previous overlay's
labels by performing a merge of symbol information at application
time.
In a nutshell it allows an overlay to refer to a symbol that a previous
overlay has defined. It requires both the base and all the overlays
to be compiled with the -@ command line switch so that symbol
information is included.
base.dts
--------
/dts-v1/;
/ {
foo: foonode {
foo-property;
};
};
$ dtc -@ -I dts -O dtb -o base.dtb base.dts
bar.dts
-------
/dts-v1/;
/plugin/;
/ {
fragment@1 {
target = <&foo>;
__overlay__ {
overlay-1-property;
bar: barnode {
bar-property;
};
};
};
};
$ dtc -@ -I dts -O dtb -o bar.dtb bar.dts
baz.dts
-------
/dts-v1/;
/plugin/;
/ {
fragment@1 {
target = <&bar>;
__overlay__ {
overlay-2-property;
baz: baznode {
baz-property;
};
};
};
};
$ dtc -@ -I dts -O dtb -o baz.dtb baz.dts
Applying the overlays:
$ fdtoverlay -i base.dtb -o target.dtb bar.dtb baz.dtb
Dumping:
$ fdtdump target.dtb
/ {
foonode {
overlay-1-property;
foo-property;
linux,phandle = <0x00000001>;
phandle = <0x00000001>;
barnode {
overlay-2-property;
phandle = <0x00000002>;
linux,phandle = <0x00000002>;
bar-property;
baznode {
phandle = <0x00000003>;
linux,phandle = <0x00000003>;
baz-property;
};
};
};
__symbols__ {
baz = "/foonode/barnode/baznode";
bar = "/foonode/barnode";
foo = "/foonode";
};
};
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Simon Glass <sjg@chromium.org>
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Report Coverity log:
The code uses a variable that has not
been initialized, leading to unpredictable
or unintended results.
Reported-by: Coverity (CID: 60519)
Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
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Add upstream changes to U-Boot:
- new pylibfdt functions
- fdt_setprop_placeholder()
Signed-off-by: Simon Glass <sjg@chromium.org>
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Adjust this code so that it can work with Python 2 and 3.
Fixes: d73fcb1 (moveconfig: Support building a simple config database)
Reported-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
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This error code has not been upstreamed and is not really needed since it
is unlikely to be triggered. Drop it to maintain compatability with
upstream.
Reported-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
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This is no-longer needed, so stop building it.
Signed-off-by: Simon Glass <sjg@chromium.org>
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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>
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U-Boot needs to provide some swig include directories. Add this feature.
Signed-off-by: Simon Glass <sjg@chromium.org>
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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>
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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>
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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 <sjg@chromium.org>
Tested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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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 <stefan.agner@toradex.com>
Acked-by: Simon Glass <sjg@chromium.org>
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This a few minor changes down from upstream since the last sync.
Signed-off-by: Simon Glass <sjg@chromium.org>
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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>
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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>
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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>
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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>
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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 <sjg@chromium.org>
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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 <sjg@chromium.org>
Update to drivers/power/pmic/palmas.c:
Signed-off-by: Keerthy <j-keerthy@ti.com>
Change-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 <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>
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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 <sjg@chromium.org>
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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 <dcb314@hotmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Simon Glass <sjg@chromium.org>
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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>
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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 <sjg@chromium.org>
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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 <sjg@chromium.org>
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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 <sjg@chromium.org>
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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 <sjg@chromium.org>
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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 <sjg@chromium.org>
Acked-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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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>
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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>
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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 <maxime.ripard@free-electrons.com>
Acked-by: Simon Glass <sjg@chromium.org>
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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>
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The function fdt_path_next_seperator had an obvious mispell. Fix it.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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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>
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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 <sjg@chromium.org>
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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 "! <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>
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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 <sjg@chromium.org>
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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 <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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