1af6074fcSRob Herring# SPDX-License-Identifier: GPL-2.0 25ab5fc7eSGrant Likelyconfig DTC 35ab5fc7eSGrant Likely bool 45ab5fc7eSGrant Likely 50166dc11SRob Herringmenuconfig OF 60166dc11SRob Herring bool "Device Tree and Open Firmware support" 70166dc11SRob Herring help 80166dc11SRob Herring This option enables the device tree infrastructure. 90166dc11SRob Herring It is automatically selected by platforms that need it or can 100166dc11SRob Herring be enabled manually for unittests, overlays or 110166dc11SRob Herring compile-coverage. 12bcbefae2SStephen Rothwell 130166dc11SRob Herringif OF 145ab5fc7eSGrant Likely 1519fd7487SGrant Likelyconfig OF_UNITTEST 1619fd7487SGrant Likely bool "Device Tree runtime unit tests" 176019a3d0SRob Herring depends on !SPARC 186019a3d0SRob Herring select IRQ_DOMAIN 19649e0a77SRob Herring select OF_EARLY_FLATTREE 202eb46da2SGrant Likely select OF_RESOLVE 2153a42093SGrant Likely help 2253a42093SGrant Likely This option builds in test cases for the device tree infrastructure 235d927086SGeert Uytterhoeven that are executed once at boot time, and the results dumped to the 2453a42093SGrant Likely console. 2553a42093SGrant Likely 26f381b31aSFrank Rowand This option should only be enabled for a development kernel. The tests 27f381b31aSFrank Rowand will taint the kernel with TAINT_TEST. The tests will cause ERROR and 28f381b31aSFrank Rowand WARNING messages to print on the console. The tests will cause stack 29f381b31aSFrank Rowand traces to print on the console. It is possible that the tests will 30f381b31aSFrank Rowand leave the devicetree in a corrupted state. 31f381b31aSFrank Rowand 32f381b31aSFrank Rowand The unittest output will be verbose. Copy the output to a file 33f381b31aSFrank Rowand via capturing the console output or via the dmesg command. Process 34f381b31aSFrank Rowand this file with scripts/dtc/of_unittest_expect to reduce the 35f381b31aSFrank Rowand verbosity, test whether expected output is present, and to 36f381b31aSFrank Rowand summarize the results. 37f381b31aSFrank Rowand 38f381b31aSFrank Rowand If unsure, say N here. This option is not safe to enable. 3953a42093SGrant Likely 401b7c501bSRob Herringconfig OF_ALL_DTBS 411b7c501bSRob Herring bool "Build all Device Tree Blobs" 421b7c501bSRob Herring depends on COMPILE_TEST 431b7c501bSRob Herring select DTC 441b7c501bSRob Herring help 451b7c501bSRob Herring This option builds all possible Device Tree Blobs (DTBs) for the 461b7c501bSRob Herring current architecture. 471b7c501bSRob Herring 481b7c501bSRob Herring If unsure, say N here, but this option is safe to enable. 491b7c501bSRob Herring 50e169cfbeSGrant Likelyconfig OF_FLATTREE 51e169cfbeSGrant Likely bool 525ab5fc7eSGrant Likely select DTC 53e6a6928cSRob Herring select LIBFDT 5408d53aa5SArd Biesheuvel select CRC32 55e169cfbeSGrant Likely 56e6ce1324SStephen Neuendorfferconfig OF_EARLY_FLATTREE 57e6ce1324SStephen Neuendorffer bool 58*7e08baf6SBaoquan He select DMA_DECLARE_COHERENT if HAS_DMA && HAS_IOMEM 59e6ce1324SStephen Neuendorffer select OF_FLATTREE 60e6ce1324SStephen Neuendorffer 613cfc535cSAndres Salomonconfig OF_PROMTREE 623cfc535cSAndres Salomon bool 633cfc535cSAndres Salomon 64b56b5528SRob Herringconfig OF_KOBJ 65b56b5528SRob Herring def_bool SYSFS 66b56b5528SRob Herring 670f22dd39SGrant Likely# Hardly any platforms need this. It is safe to select, but only do so if you 680f22dd39SGrant Likely# need it. 69fcdeb7feSGrant Likelyconfig OF_DYNAMIC 70121c92caSGeert Uytterhoeven bool "Support for dynamic device trees" if OF_UNITTEST 71b56b5528SRob Herring select OF_KOBJ 72121c92caSGeert Uytterhoeven help 73121c92caSGeert Uytterhoeven On some platforms, the device tree can be manipulated at runtime. 74121c92caSGeert Uytterhoeven While this option is selected automatically on such platforms, you 75121c92caSGeert Uytterhoeven can enable it manually to improve device tree unit test coverage. 76fcdeb7feSGrant Likely 776b884a8dSGrant Likelyconfig OF_ADDRESS 786b884a8dSGrant Likely def_bool y 796019a3d0SRob Herring depends on !SPARC && (HAS_IOMEM || UML) 806b884a8dSGrant Likely 81e3873444SGrant Likelyconfig OF_IRQ 82e3873444SGrant Likely def_bool y 8363c60e3aSGeert Uytterhoeven depends on !SPARC && IRQ_DOMAIN 84e3873444SGrant Likely 853f0c8206SMarek Szyprowskiconfig OF_RESERVED_MEM 861ee292a6SRob Herring def_bool OF_EARLY_FLATTREE 873f0c8206SMarek Szyprowski 887941b27bSPantelis Antoniouconfig OF_RESOLVE 897941b27bSPantelis Antoniou bool 907941b27bSPantelis Antoniou 917518b589SPantelis Antoniouconfig OF_OVERLAY 925c776064SMatwey V. Kornilov bool "Device Tree overlays" 937518b589SPantelis Antoniou select OF_DYNAMIC 9439a751a4SFrank Rowand select OF_FLATTREE 957518b589SPantelis Antoniou select OF_RESOLVE 96121c92caSGeert Uytterhoeven help 97121c92caSGeert Uytterhoeven Overlays are a method to dynamically modify part of the kernel's 98121c92caSGeert Uytterhoeven device tree with dynamically loaded data. 99121c92caSGeert Uytterhoeven While this option is selected automatically when needed, you can 100121c92caSGeert Uytterhoeven enable it manually to improve device tree unit test coverage. 1017518b589SPantelis Antoniou 102298535c0SDavid Daneyconfig OF_NUMA 103298535c0SDavid Daney bool 104298535c0SDavid Daney 1050166dc11SRob Herringendif # OF 106