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

[Tom Rini]

On Fri, Jul 28, 2017 at 12:48:22PM -0600, Simon Glass wrote:
> Hi Pantelis,
> 
> On 30 June 2017 at 10:22, Pantelis Antoniou
> <pantelis.antoniou at konsulko.com> wrote:
> > 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
> 
> Will there be a v2 of this series? I'm not sure whether the plan is to
> apply it in the current merge window or not?

There's a certain level of churn and then what will be accepted in
upstream libfdt that's happening before another iteration of this
happens, unfortunately.

-- 
Tom
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