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.anton...@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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