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- # SPDX-License-Identifier: GPL-2.0
- config DTC
- bool
- menuconfig OF
- bool "Device Tree and Open Firmware support"
- help
- This option enables the device tree infrastructure.
- It is automatically selected by platforms that need it or can
- be enabled manually for unittests, overlays or
- compile-coverage.
- if OF
- config OF_UNITTEST
- bool "Device Tree runtime unit tests"
- depends on OF_EARLY_FLATTREE
- select IRQ_DOMAIN
- select OF_RESOLVE
- help
- This option builds in test cases for the device tree infrastructure
- that are executed once at boot time, and the results dumped to the
- console.
- This option should only be enabled for a development kernel. The tests
- will taint the kernel with TAINT_TEST. The tests will cause ERROR and
- WARNING messages to print on the console. The tests will cause stack
- traces to print on the console. It is possible that the tests will
- leave the devicetree in a corrupted state.
- The unittest output will be verbose. Copy the output to a file
- via capturing the console output or via the dmesg command. Process
- this file with scripts/dtc/of_unittest_expect to reduce the
- verbosity, test whether expected output is present, and to
- summarize the results.
- If unsure, say N here. This option is not safe to enable.
- config OF_KUNIT_TEST
- tristate "Devicetree KUnit Test" if !KUNIT_ALL_TESTS
- depends on KUNIT
- default KUNIT_ALL_TESTS
- help
- This option builds KUnit unit tests for device tree infrastructure.
- If unsure, say N here, but this option is safe to enable.
- config OF_ALL_DTBS
- bool "Build all Device Tree Blobs"
- depends on COMPILE_TEST
- select DTC
- help
- This option builds all possible Device Tree Blobs (DTBs) for the
- current architecture.
- If unsure, say N here, but this option is safe to enable.
- config OF_FLATTREE
- bool
- select DTC
- select LIBFDT
- select CRC32
- config OF_EARLY_FLATTREE
- def_bool OF && !(SPARC || ALPHA || HEXAGON || M68K || PARISC || S390)
- select DMA_DECLARE_COHERENT if HAS_DMA && HAS_IOMEM
- select OF_FLATTREE
- config OF_PROMTREE
- bool
- config OF_KOBJ
- def_bool SYSFS
- # Hardly any platforms need this. It is safe to select, but only do so if you
- # need it.
- config OF_DYNAMIC
- bool "Support for dynamic device trees" if OF_UNITTEST
- select OF_KOBJ
- help
- On some platforms, the device tree can be manipulated at runtime.
- While this option is selected automatically on such platforms, you
- can enable it manually to improve device tree unit test coverage.
- config OF_ADDRESS
- def_bool y
- depends on !SPARC && (HAS_IOMEM || UML)
- config OF_IRQ
- def_bool y
- depends on !SPARC && IRQ_DOMAIN
- config OF_RESERVED_MEM
- def_bool OF_EARLY_FLATTREE
- config OF_RESOLVE
- bool
- config OF_OVERLAY
- bool "Device Tree overlays"
- select OF_DYNAMIC
- select OF_FLATTREE
- select OF_RESOLVE
- help
- Overlays are a method to dynamically modify part of the kernel's
- device tree with dynamically loaded data.
- While this option is selected automatically when needed, you can
- enable it manually to improve device tree unit test coverage.
- config OF_OVERLAY_KUNIT_TEST
- tristate "Device Tree overlay KUnit tests" if !KUNIT_ALL_TESTS
- depends on KUNIT
- default KUNIT_ALL_TESTS
- select OF_OVERLAY
- help
- This option builds KUnit unit tests for the device tree overlay code.
- If unsure, say N here, but this option is safe to enable.
- config OF_NUMA
- bool
- endif # OF
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