Hello, This series adds devicetree overlay support loosely based on the Linux drivers and a fpga-region driver to program an FPGA based on a devicetree overlay. The overlay is registered as a fixup, which is necessary to apply the overlay either on the build-in device tree or external device trees that are passed to Linux. The overlay driver uses notifiers to notify other drivers before and after an overlay is applied. This allows other drivers to react on overlays, e.g., to program an FPGA. If other drivers report an error from the notifier, the error will be ignored and the overlay will be applied anyway. The fpga-region driver understands the firmware-name property and loads a firmware if the firmware-name property is added to a device node. The binding defines that the firmware is searched in the firmware search path. The global.firmware.path variable stores this path and allows other drivers or the user to specify the search path. Not sure if this is a good variable name for that. I extended the blspec and allow to specify a device tree overlay with the "devicetree-overlay" key. The overlay is applied before booting the OS from that blspec entry. Michael Michael Tretter (7): commands: unify newlines for options dtc: add -@ option to enable __symbols__ of: add support for devicetree overlays commands: add oftree -o option for overlays firmware: allow to find manager by device node firmware: add support for fpga-regions blspec: add support for devicetree overlays Documentation/user/booting-linux.rst | 4 + commands/crc.c | 4 +- commands/firmwareload.c | 4 +- commands/of_display_timings.c | 8 +- commands/of_dump.c | 6 +- commands/of_fixup_status.c | 2 +- commands/oftree.c | 41 +++- common/blspec.c | 10 + common/bootm.c | 35 ++++ common/firmware.c | 18 ++ drivers/firmware/Kconfig | 7 + drivers/firmware/Makefile | 1 + drivers/firmware/of-fpga-region.c | 153 +++++++++++++++ drivers/of/Kconfig | 9 + drivers/of/Makefile | 1 + drivers/of/overlay.c | 251 ++++++++++++++++++++++++ drivers/of/resolver.c | 278 +++++++++++++++++++++++++++ include/bootm.h | 1 + include/firmware.h | 1 + include/of.h | 42 ++++ scripts/Makefile.lib | 2 +- 21 files changed, 860 insertions(+), 18 deletions(-) create mode 100644 drivers/firmware/of-fpga-region.c create mode 100644 drivers/of/overlay.c create mode 100644 drivers/of/resolver.c -- 2.20.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
