Hi Frank/Rob, I have picked all the related patches together into a single patchset, so they can be properly reviewed/tested. This patchset makes necessary changes to the kernel to add support for building overlays (%.dtbo) and the required fdtoverlay tool. This also builds static_test.dtb using some of the existing overlay tests present in drivers/of/unittest-data/ for better test coverage. Note that in order for anyone to test this stuff, you need to manually run the ./update-dtc-source.sh script once to fetch the necessary changes from the external DTC project (i.e. fdtoverlay.c and this[1] patch). Also note that Frank has already shared his concerns towards the error reporting done by fdtoverlay tool [2], I have still included the patch in this series for completeness, will see how to get that sorted out. V5: - Don't reuse DTC_SOURCE for fdtoverlay.c in patch 1/5 (Frank). - Update .gitignore and scripts/Makefile.dtbinst, drop dtbo-y syntax and DTC_FLAGS += -@ in patch 4/5 (Masahiro). - Remove the intermediate dtb, rename output to static_test.dtb, don't use overlay.dtb and overlay_base.dtb for static builds, improved layout/comments in Makefile for patch 5/5 (Frank). -- Viresh [1] https://github.com/dgibson/dtc/commit/163f0469bf2ed8b2fe5aa15bc796b93c70243ddc [2] https://lore.kernel.org/lkml/74f8aa8f-ffab-3b0f-186f-31fb7395ebbb@xxxxxxxxx/ Viresh Kumar (5): scripts: dtc: Fetch fdtoverlay.c from external DTC project scripts: dtc: Build fdtoverlay tool scripts: dtc: Remove the unused fdtdump.c file kbuild: Add support to build overlays (%.dtbo) of: unittest: Statically apply overlays using fdtoverlay .gitignore | 3 +- Makefile | 4 +- drivers/of/unittest-data/Makefile | 50 +++++++++ scripts/Makefile.dtbinst | 3 + scripts/Makefile.lib | 4 +- scripts/dtc/Makefile | 6 +- scripts/dtc/fdtdump.c | 163 ------------------------------ scripts/dtc/update-dtc-source.sh | 3 +- 8 files changed, 66 insertions(+), 170 deletions(-) delete mode 100644 scripts/dtc/fdtdump.c -- 2.25.0.rc1.19.g042ed3e048af
