On Sat, 26 Aug 2023 at 15:36, Heinrich Schuchardt <xypron.g...@gmx.de> wrote: > > On 8/26/23 11:06, Sughosh Ganu wrote: > > > > Provide a way for removing certain devicetree nodes and/or properties > > from the devicetree. This is needed to purge certain nodes and > > properties which may be relevant only in U-Boot. Such nodes and > > properties are then removed from the devicetree before it is passed to > > the kernel. This ensures that the devicetree passed to the OS does not > > contain any non-compliant nodes and properties. > > > > The removal of the nodes and properties is being done through an > > EVT_FT_FIXUP handler. I am not sure if the removal code needs to be > > behind any Kconfig symbol. > > > > I have only build tested this on sandbox, and tested on qemu arm64 > > virt platform. This being a RFC, I have not put this through a CI run. > > We should have a test for the new functionality. E.g. add some > superfluous properties and nodes to arch/sandbox/dts/test.dts, delete > them via the DT_PURGE macro, and check that the device-tree passed to an > EFI binary does not contain these properties and nodes.
Yes, I plan to have a test in the non-RFC version. I was thinking of adding a command and then using that to test the functionality. -sughosh > > Best regards > > Heinrich > > > > > Sughosh Ganu (5): > > dt: Provide a way to remove non-compliant nodes and properties > > fwu: Add the fwu-mdata node for removal from devicetree > > capsule: Add the capsule-key property for removal from devicetree > > bootefi: Call the EVT_FT_FIXUP event handler > > doc: Add a document for non-compliant DT node/property removal > > > > cmd/bootefi.c | 18 +++++ > > .../devicetree/dt_non_compliant_purge.rst | 64 ++++++++++++++++ > > drivers/fwu-mdata/fwu-mdata-uclass.c | 5 ++ > > include/dt-structs.h | 11 +++ > > lib/Makefile | 1 + > > lib/dt_purge.c | 73 +++++++++++++++++++ > > lib/efi_loader/efi_capsule.c | 7 ++ > > 7 files changed, 179 insertions(+) > > create mode 100644 doc/develop/devicetree/dt_non_compliant_purge.rst > > create mode 100644 lib/dt_purge.c > >
