110 lines
2.8 KiB
Plaintext
110 lines
2.8 KiB
Plaintext
|
# 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 !SPARC
|
||
|
|
select IRQ_DOMAIN
|
||
|
|
select OF_EARLY_FLATTREE
|
||
|
|
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_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
|
||
|
|
bool
|
||
|
|
select DMA_DECLARE_COHERENT if HAS_DMA
|
||
|
|
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_NUMA
|
||
|
|
bool
|
||
|
|
|
||
|
|
config OF_DMA_DEFAULT_COHERENT
|
||
|
|
# arches should select this if DMA is coherent by default for OF devices
|
||
|
|
bool
|
||
|
|
|
||
|
|
endif # OF
|