[U-Boot] [PATCH 0/5] uboot overlays and FIT image

[Pantelis Antoniou]

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

It is intended to be used with FIT images since handling a multitude
of device tree blobs manually is a chore.

The first 3 patches have already been submitted to DTC for review, and
provide the plumbing in libfdt.

The next patch adds a unit test for a stacked overlay (in which an
overlay refers to a symbol contained in a previously applied overlay).

The last patch contains the FIT FDT blob generation logic as well
as documentation about how it all works.

The patchset is available at

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

and is against mainline u-boot as pulled today, 30/6/2017.

Pantelis Antoniou (5):
  libfdt.h: Introduce FDT_PATH_MAX
  libfdt_env.h: Add <malloc.h> in libfdt environment
  fdt: Allow stacked overlays phandle references
  test: overlay: Add unit test for stacked overlay
  fit: Introduce methods for applying overlays on fit-load

 common/image-fdt.c                           |   7 +-
 common/image-fit.c                           | 215 ++++++++++++++++++++++++--
 doc/uImage.FIT/command_syntax_extensions.txt |  12 +-
 doc/uImage.FIT/overlay-fdt-boot.txt          | 221 +++++++++++++++++++++++++++
 doc/uImage.FIT/source_file_format.txt        |   6 +-
 include/image.h                              |  10 ++
 include/libfdt_env.h                         |   1 +
 lib/libfdt/fdt_overlay.c                     | 148 +++++++++++++++++-
 lib/libfdt/libfdt.h                          |   3 +
 test/overlay/Makefile                        |   1 +
 test/overlay/cmd_ut_overlay.c                |  34 ++++-
 test/overlay/test-fdt-overlay-stacked.dts    |  21 +++
 12 files changed, 659 insertions(+), 20 deletions(-)
 create mode 100644 doc/uImage.FIT/overlay-fdt-boot.txt
 create mode 100644 test/overlay/test-fdt-overlay-stacked.dts

-- 
2.1.4