[U-Boot] [PATCH v3 00/14] uboot overlays, FIT image & unittest

[Pantelis Antoniou]

This patchset allows uboot to handle overlays in a manner that uses
a base DT blob and an arbitrary number of DT overlays blobs.

While it is intended to be used with FIT images since handling a multitude
of device tree blobs manually is a chore, manual fdt overlay application
is supported and described.

Changes since v2:
* Addressed review comments by splitting patches and documenting methods.
* Patch preserving extra configuration on fit-load

The patchset is available at

	https://github.com/pantoniou/u-boot/tree/uboot-overlays

and is against mainline u-boot as pulled today, 4/9/2017.

Franklin S Cooper Jr (1):
  doc: overlays: Tweak documentation regarding overlays

Pantelis Antoniou (13):
  Introduce fdt_setprop_placeholder() method
  fdt: Introduce helper method fdt_overlay_apply_verbose()
  fdt: Switch to using the verbose overlay application method
  fdt: Allow stacked overlays phandle references
  fit: Allow multiple images per property
  fit: Do not throw away extra configuration on fit_image_load()
  fit: Introduce methods for applying overlays on fit-load
  fit: fdt overlays doc
  doc: Document how to apply fdt overlays
  dtbo: make dtbos special
  config: sandbox: Add unit tests
  ut: fix fdt_getprop_u32() change
  test: overlay: Add unit test for stacked overlay

 cmd/fdt.c                                    |   7 +-
 common/fdt_support.c                         |  31 ++++
 common/image-fdt.c                           |   7 +-
 common/image-fit.c                           | 210 ++++++++++++++++++++++--
 configs/sandbox_defconfig                    |   2 +
 doc/README.fdt-overlays                      | 114 ++++++++++++++
 doc/uImage.FIT/command_syntax_extensions.txt |  12 +-
 doc/uImage.FIT/overlay-fdt-boot.txt          | 225 ++++++++++++++++++++++++++
 doc/uImage.FIT/source_file_format.txt        |   6 +-
 include/fdt_support.h                        |   2 +
 include/image.h                              |  25 +++
 lib/libfdt/fdt_overlay.c                     | 228 ++++++++++++++++++++++++---
 lib/libfdt/fdt_rw.c                          |  20 ++-
 lib/libfdt/libfdt.h                          |  31 ++++
 scripts/Makefile.lib                         |  17 ++
 test/overlay/Makefile                        |   1 +
 test/overlay/cmd_ut_overlay.c                |  50 ++++--
 test/overlay/test-fdt-overlay-stacked.dts    |  21 +++
 18 files changed, 953 insertions(+), 56 deletions(-)
 create mode 100644 doc/README.fdt-overlays
 create mode 100644 doc/uImage.FIT/overlay-fdt-boot.txt
 create mode 100644 test/overlay/test-fdt-overlay-stacked.dts

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2.1.4