2017-12-27 21:55:14 +03:00
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# SPDX-License-Identifier: GPL-2.0
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2010-07-05 22:02:13 +04:00
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config DTC
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bool
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2015-05-28 20:48:45 +03:00
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menuconfig OF
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bool "Device Tree and Open Firmware support"
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help
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This option enables the device tree infrastructure.
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It is automatically selected by platforms that need it or can
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be enabled manually for unittests, overlays or
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compile-coverage.
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2010-06-29 06:45:51 +04:00
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2015-05-28 20:48:45 +03:00
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if OF
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2010-07-05 22:02:13 +04:00
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2014-11-04 16:24:45 +03:00
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config OF_UNITTEST
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bool "Device Tree runtime unit tests"
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2017-07-25 22:46:56 +03:00
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depends on !SPARC
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select IRQ_DOMAIN
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2015-05-28 20:58:02 +03:00
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select OF_EARLY_FLATTREE
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2014-10-02 17:36:46 +04:00
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select OF_RESOLVE
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2011-12-12 20:25:57 +04:00
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help
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This option builds in test cases for the device tree infrastructure
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2013-12-25 00:06:01 +04:00
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that are executed once at boot time, and the results dumped to the
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2011-12-12 20:25:57 +04:00
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console.
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If unsure, say N here, but this option is safe to enable.
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2015-10-07 01:57:33 +03:00
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config OF_ALL_DTBS
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bool "Build all Device Tree Blobs"
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depends on COMPILE_TEST
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select DTC
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help
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This option builds all possible Device Tree Blobs (DTBs) for the
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current architecture.
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If unsure, say N here, but this option is safe to enable.
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2009-11-24 00:53:09 +03:00
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config OF_FLATTREE
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bool
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2010-07-05 22:02:13 +04:00
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select DTC
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2014-04-03 00:10:14 +04:00
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select LIBFDT
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2014-11-14 20:05:35 +03:00
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select CRC32
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2009-11-24 00:53:09 +03:00
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2010-11-19 02:54:56 +03:00
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config OF_EARLY_FLATTREE
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bool
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2019-02-03 22:12:02 +03:00
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select DMA_DECLARE_COHERENT if HAS_DMA
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2010-11-19 02:54:56 +03:00
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select OF_FLATTREE
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2010-10-11 07:42:33 +04:00
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config OF_PROMTREE
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bool
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2017-10-04 22:09:40 +03:00
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config OF_KOBJ
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def_bool SYSFS
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2012-02-16 07:38:40 +04:00
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# Hardly any platforms need this. It is safe to select, but only do so if you
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# need it.
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2010-01-29 15:04:33 +03:00
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config OF_DYNAMIC
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2015-01-23 19:10:04 +03:00
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bool "Support for dynamic device trees" if OF_UNITTEST
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2017-10-04 22:09:40 +03:00
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select OF_KOBJ
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2015-01-23 19:10:04 +03:00
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help
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On some platforms, the device tree can be manipulated at runtime.
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While this option is selected automatically on such platforms, you
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can enable it manually to improve device tree unit test coverage.
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2010-01-29 15:04:33 +03:00
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2010-06-08 17:48:09 +04:00
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config OF_ADDRESS
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def_bool y
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2017-07-25 22:46:56 +03:00
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depends on !SPARC && (HAS_IOMEM || UML)
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2010-06-08 17:48:09 +04:00
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2010-06-18 21:09:59 +04:00
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config OF_IRQ
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def_bool y
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2015-04-05 17:59:24 +03:00
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depends on !SPARC && IRQ_DOMAIN
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2010-06-18 21:09:59 +04:00
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2014-02-28 17:42:48 +04:00
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config OF_RESERVED_MEM
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of: Drop reserved mem dependency on DMA_DECLARE_COHERENT and DMA_CMA
Reserved memory regions can be used for more than just DMA regions, so
only enabling on DMA_DECLARE_COHERENT (via HAS_DMA) or DMA_CMA is wrong.
This effectively doesn't matter except for the few cases arches select
NO_DMA.
At least, these users of RESERVEDMEM_OF_DECLARE depend on reserved memory
support:
arch/riscv/mm/init.c:RESERVEDMEM_OF_DECLARE(elfcorehdr, "linux,elfcorehdr", elfcore_hdr_setup);
drivers/memory/tegra/tegra210-emc-table.c:RESERVEDMEM_OF_DECLARE(tegra210_emc_table, "nvidia,tegra210-emc-table",
drivers/soc/fsl/qbman/bman_ccsr.c:RESERVEDMEM_OF_DECLARE(bman_fbpr, "fsl,bman-fbpr", bman_fbpr);
drivers/soc/fsl/qbman/qman_ccsr.c:RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd);
drivers/soc/fsl/qbman/qman_ccsr.c:RESERVEDMEM_OF_DECLARE(qman_pfdr, "fsl,qman-pfdr", qman_pfdr);
Let's simplify things and enable OF_RESERVED_MEM when OF_EARLY_FLATTREE is
enabled.
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210527223217.1572631-1-robh@kernel.org
2021-05-28 01:32:17 +03:00
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def_bool OF_EARLY_FLATTREE
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2014-02-28 17:42:48 +04:00
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2014-07-04 20:59:20 +04:00
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config OF_RESOLVE
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bool
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2014-10-28 23:35:58 +03:00
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config OF_OVERLAY
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2015-02-15 18:22:47 +03:00
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bool "Device Tree overlays"
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2014-10-28 23:35:58 +03:00
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select OF_DYNAMIC
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2018-02-12 11:19:42 +03:00
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select OF_FLATTREE
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2014-10-28 23:35:58 +03:00
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select OF_RESOLVE
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2015-01-23 19:10:04 +03:00
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help
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Overlays are a method to dynamically modify part of the kernel's
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device tree with dynamically loaded data.
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While this option is selected automatically when needed, you can
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enable it manually to improve device tree unit test coverage.
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2014-10-28 23:35:58 +03:00
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2016-04-09 01:50:25 +03:00
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config OF_NUMA
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bool
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2020-01-26 14:52:47 +03:00
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config OF_DMA_DEFAULT_COHERENT
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# arches should select this if DMA is coherent by default for OF devices
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bool
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2015-05-28 20:48:45 +03:00
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endif # OF
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