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diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
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+config DTC
+ bool
+
+config OF
+ bool
+
+menu "Device Tree and Open Firmware support"
+ depends on OF
+
+config OF_UNITTEST
+ bool "Device Tree runtime unit tests"
+ depends on OF_IRQ && 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.
+
+ 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 OF_FLATTREE
+
+config OF_PROMTREE
+ bool
+
+# 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
+ 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
+ select OF_ADDRESS_PCI if PCI
+
+config OF_ADDRESS_PCI
+ bool
+
+config OF_IRQ
+ def_bool y
+ depends on !SPARC && IRQ_DOMAIN
+
+config OF_NET
+ depends on NETDEVICES
+ def_bool y
+
+config OF_MDIO
+ def_tristate PHYLIB
+ depends on PHYLIB
+ help
+ OpenFirmware MDIO bus (Ethernet PHY) accessors
+
+config OF_PCI
+ def_tristate PCI
+ depends on PCI
+ help
+ OpenFirmware PCI bus accessors
+
+config OF_PCI_IRQ
+ def_tristate PCI
+ depends on OF_PCI && OF_IRQ
+ help
+ OpenFirmware PCI IRQ routing helpers
+
+config OF_MTD
+ depends on MTD
+ def_bool y
+
+config OF_RESERVED_MEM
+ depends on OF_EARLY_FLATTREE
+ bool
+ help
+ Helpers to allow for reservation of memory regions
+
+config OF_RESOLVE
+ bool
+
+config OF_OVERLAY
+ bool "Device Tree overlays"
+ select OF_DYNAMIC
+ 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.
+
+endmenu # OF