u-boot.git/lib/libfdt, branch v2017.11

fdt: Allow stacked overlays phandle references

2017-09-15T11:27:48+00:00

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 
Signed-off-by: David Gibson 
Acked-by: Simon Glass

libfdt: Initialize the stack variable

2017-09-15T11:27:48+00:00

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

fdt: Sync libfdt up to upstream

2017-09-15T11:24:39+00:00

Add upstream changes to U-Boot:

- new pylibfdt functions
- fdt_setprop_placeholder()

Signed-off-by: Simon Glass

moveconfig: Use fd.write() instead of print >>

2017-09-12T03:43:58+00:00

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 
Signed-off-by: Simon Glass

libfdt: Drop -FDT_ERR_TOODEEP

2017-07-10T12:39:24+00:00

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 

Signed-off-by: Simon Glass 
Tested-by: Peter Robinson

fdt: Stop building the old python libfdt module

2017-06-02T16:18:19+00:00

This is no-longer needed, so stop building it.

Signed-off-by: Simon Glass

fdt: Rename existing python libfdt module

2017-06-02T16:16:47+00:00

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

fdt: Allow swig options to be provided by Makefile

2017-06-02T16:16:47+00:00

U-Boot needs to provide some swig include directories. Add this feature.

Signed-off-by: Simon Glass

fdt: Move header files into lib/libfdt

2017-06-02T16:16:46+00:00

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

fdt: Add Python bindings

2017-06-02T16:16:46+00:00

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