xref: /linux/arch/arm/Kconfig (revision aa42587a43e82b409436e05ce52835904de1a96f)
11da177e4SLinus Torvaldsconfig ARM
21da177e4SLinus Torvalds	bool
31da177e4SLinus Torvalds	default y
4b1b3f49cSRussell King	select ARCH_BINFMT_ELF_RANDOMIZE_PIE
57463449bSCatalin Marinas	select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
63d06770eSMark Rutland	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
7171b3f0dSRussell King	select ARCH_HAVE_CUSTOM_GPIO_H
8d7018848SMark Salter	select ARCH_MIGHT_HAVE_PC_PARPORT
9017f161aSKim Phillips	select ARCH_USE_BUILTIN_BSWAP
100cbad9c9SWill Deacon	select ARCH_USE_CMPXCHG_LOCKREF
11b1b3f49cSRussell King	select ARCH_WANT_IPC_PARSE_VERSION
12ee951c63SStephen Boyd	select BUILDTIME_EXTABLE_SORT if MMU
13171b3f0dSRussell King	select CLONE_BACKWARDS
14b1b3f49cSRussell King	select CPU_PM if (SUSPEND || CPU_IDLE)
15dce5c9e3SWill Deacon	select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
164477ca45SUwe Kleine-König	select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
17b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
18171b3f0dSRussell King	select GENERIC_IDLE_POLL_SETUP
19b1b3f49cSRussell King	select GENERIC_IRQ_PROBE
20b1b3f49cSRussell King	select GENERIC_IRQ_SHOW
21b1b3f49cSRussell King	select GENERIC_PCI_IOMAP
2238ff87f7SStephen Boyd	select GENERIC_SCHED_CLOCK
23b1b3f49cSRussell King	select GENERIC_SMP_IDLE_THREAD
24b1b3f49cSRussell King	select GENERIC_STRNCPY_FROM_USER
25b1b3f49cSRussell King	select GENERIC_STRNLEN_USER
26b1b3f49cSRussell King	select HARDIRQS_SW_RESEND
277a017721SAKASHI Takahiro	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
2809f05d85SRabin Vincent	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
295cbad0ebSJason Wessel	select HAVE_ARCH_KGDB
3091702175SKees Cook	select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
310693bf68SWade Farnsworth	select HAVE_ARCH_TRACEHOOK
32b1b3f49cSRussell King	select HAVE_BPF_JIT
3351aaf81fSRussell King	select HAVE_CC_STACKPROTECTOR
34171b3f0dSRussell King	select HAVE_CONTEXT_TRACKING
35b1b3f49cSRussell King	select HAVE_C_RECORDMCOUNT
36b1b3f49cSRussell King	select HAVE_DEBUG_KMEMLEAK
37b1b3f49cSRussell King	select HAVE_DMA_API_DEBUG
38b1b3f49cSRussell King	select HAVE_DMA_ATTRS
39b1b3f49cSRussell King	select HAVE_DMA_CONTIGUOUS if MMU
40b1b3f49cSRussell King	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
41dce5c9e3SWill Deacon	select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
42b1b3f49cSRussell King	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
43b1b3f49cSRussell King	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
44b1b3f49cSRussell King	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
45b1b3f49cSRussell King	select HAVE_GENERIC_DMA_COHERENT
46b1b3f49cSRussell King	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
47b1b3f49cSRussell King	select HAVE_IDE if PCI || ISA || PCMCIA
4887c46b6cSRussell King	select HAVE_IRQ_TIME_ACCOUNTING
49b1b3f49cSRussell King	select HAVE_KERNEL_GZIP
50f9b493acSKyungsik Lee	select HAVE_KERNEL_LZ4
51b1b3f49cSRussell King	select HAVE_KERNEL_LZMA
52b1b3f49cSRussell King	select HAVE_KERNEL_LZO
53b1b3f49cSRussell King	select HAVE_KERNEL_XZ
54856bc356SJon Medhurst	select HAVE_KPROBES if !XIP_KERNEL
559edddaa2SAnanth N Mavinakayanahalli	select HAVE_KRETPROBES if (HAVE_KPROBES)
56b1b3f49cSRussell King	select HAVE_MEMBLOCK
57171b3f0dSRussell King	select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
58b1b3f49cSRussell King	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
597ada189fSJamie Iles	select HAVE_PERF_EVENTS
6049863894SWill Deacon	select HAVE_PERF_REGS
6149863894SWill Deacon	select HAVE_PERF_USER_STACK_DUMP
62e513f8bfSWill Deacon	select HAVE_REGS_AND_STACK_ACCESS_API
63b1b3f49cSRussell King	select HAVE_SYSCALL_TRACEPOINTS
64af1839ebSCatalin Marinas	select HAVE_UID16
6531c1fc81SKevin Hilman	select HAVE_VIRT_CPU_ACCOUNTING_GEN
66da0ec6f7SThomas Gleixner	select IRQ_FORCED_THREADING
673d92a71aSAnna-Maria Gleixner	select KTIME_SCALAR
68171b3f0dSRussell King	select MODULES_USE_ELF_REL
6984f452b1SSantosh Shilimkar	select NO_BOOTMEM
70171b3f0dSRussell King	select OLD_SIGACTION
71171b3f0dSRussell King	select OLD_SIGSUSPEND3
72b1b3f49cSRussell King	select PERF_USE_VMALLOC
73b1b3f49cSRussell King	select RTC_LIB
74b1b3f49cSRussell King	select SYS_SUPPORTS_APM_EMULATION
75171b3f0dSRussell King	# Above selects are sorted alphabetically; please add new ones
76171b3f0dSRussell King	# according to that.  Thanks.
771da177e4SLinus Torvalds	help
781da177e4SLinus Torvalds	  The ARM series is a line of low-power-consumption RISC chip designs
79f6c8965aSMartin Michlmayr	  licensed by ARM Ltd and targeted at embedded applications and
801da177e4SLinus Torvalds	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
811da177e4SLinus Torvalds	  manufactured, but legacy ARM-based PC hardware remains popular in
821da177e4SLinus Torvalds	  Europe.  There is an ARM Linux project with a web page at
831da177e4SLinus Torvalds	  <http://www.arm.linux.org.uk/>.
841da177e4SLinus Torvalds
8574facffeSRussell Kingconfig ARM_HAS_SG_CHAIN
8674facffeSRussell King	bool
8774facffeSRussell King
884ce63fcdSMarek Szyprowskiconfig NEED_SG_DMA_LENGTH
894ce63fcdSMarek Szyprowski	bool
904ce63fcdSMarek Szyprowski
914ce63fcdSMarek Szyprowskiconfig ARM_DMA_USE_IOMMU
924ce63fcdSMarek Szyprowski	bool
93b1b3f49cSRussell King	select ARM_HAS_SG_CHAIN
94b1b3f49cSRussell King	select NEED_SG_DMA_LENGTH
954ce63fcdSMarek Szyprowski
9660460abfSSeung-Woo Kimif ARM_DMA_USE_IOMMU
9760460abfSSeung-Woo Kim
9860460abfSSeung-Woo Kimconfig ARM_DMA_IOMMU_ALIGNMENT
9960460abfSSeung-Woo Kim	int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
10060460abfSSeung-Woo Kim	range 4 9
10160460abfSSeung-Woo Kim	default 8
10260460abfSSeung-Woo Kim	help
10360460abfSSeung-Woo Kim	  DMA mapping framework by default aligns all buffers to the smallest
10460460abfSSeung-Woo Kim	  PAGE_SIZE order which is greater than or equal to the requested buffer
10560460abfSSeung-Woo Kim	  size. This works well for buffers up to a few hundreds kilobytes, but
10660460abfSSeung-Woo Kim	  for larger buffers it just a waste of address space. Drivers which has
10760460abfSSeung-Woo Kim	  relatively small addressing window (like 64Mib) might run out of
10860460abfSSeung-Woo Kim	  virtual space with just a few allocations.
10960460abfSSeung-Woo Kim
11060460abfSSeung-Woo Kim	  With this parameter you can specify the maximum PAGE_SIZE order for
11160460abfSSeung-Woo Kim	  DMA IOMMU buffers. Larger buffers will be aligned only to this
11260460abfSSeung-Woo Kim	  specified order. The order is expressed as a power of two multiplied
11360460abfSSeung-Woo Kim	  by the PAGE_SIZE.
11460460abfSSeung-Woo Kim
11560460abfSSeung-Woo Kimendif
11660460abfSSeung-Woo Kim
1170b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI
1180b05da72SHans Ulli Kroll	bool
1190b05da72SHans Ulli Kroll
12075e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION
12175e7153aSRalf Baechle	bool
12275e7153aSRalf Baechle
123bc581770SLinus Walleijconfig HAVE_TCM
124bc581770SLinus Walleij	bool
125bc581770SLinus Walleij	select GENERIC_ALLOCATOR
126bc581770SLinus Walleij
127e119bfffSRussell Kingconfig HAVE_PROC_CPU
128e119bfffSRussell King	bool
129e119bfffSRussell King
130ce816fa8SUwe Kleine-Königconfig NO_IOPORT_MAP
1315ea81769SAl Viro	bool
1325ea81769SAl Viro
1331da177e4SLinus Torvaldsconfig EISA
1341da177e4SLinus Torvalds	bool
1351da177e4SLinus Torvalds	---help---
1361da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
1371da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
1381da177e4SLinus Torvalds
1391da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
1401da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
1411da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
1421da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
1431da177e4SLinus Torvalds
1441da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
1451da177e4SLinus Torvalds
1461da177e4SLinus Torvalds	  Otherwise, say N.
1471da177e4SLinus Torvalds
1481da177e4SLinus Torvaldsconfig SBUS
1491da177e4SLinus Torvalds	bool
1501da177e4SLinus Torvalds
151f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT
152f16fb1ecSRussell King	bool
153f16fb1ecSRussell King	default y
154f16fb1ecSRussell King
155f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT
156f76e9154SNicolas Pitre	bool
157f76e9154SNicolas Pitre	depends on !SMP
158f76e9154SNicolas Pitre	default y
159f76e9154SNicolas Pitre
160f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT
161f16fb1ecSRussell King	bool
162f16fb1ecSRussell King	default y
163f16fb1ecSRussell King
1647ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT
1657ad1bcb2SRussell King	bool
1667ad1bcb2SRussell King	default y
1677ad1bcb2SRussell King
1681da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
1691da177e4SLinus Torvalds	bool
1708a87411bSWill Deacon	default y
1711da177e4SLinus Torvalds
172f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32
173f0d1b0b3SDavid Howells	bool
174f0d1b0b3SDavid Howells
175f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64
176f0d1b0b3SDavid Howells	bool
177f0d1b0b3SDavid Howells
1784a1b5733SEduardo Valentinconfig ARCH_HAS_BANDGAP
1794a1b5733SEduardo Valentin	bool
1804a1b5733SEduardo Valentin
181b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
182b89c3b16SAkinobu Mita	bool
183b89c3b16SAkinobu Mita	default y
184b89c3b16SAkinobu Mita
1851da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
1861da177e4SLinus Torvalds	bool
1871da177e4SLinus Torvalds	default y
1881da177e4SLinus Torvalds
189a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
190a08b6b79Sviro@ZenIV.linux.org.uk	bool
191a08b6b79Sviro@ZenIV.linux.org.uk
1925ac6da66SChristoph Lameterconfig ZONE_DMA
1935ac6da66SChristoph Lameter	bool
1945ac6da66SChristoph Lameter
195ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE
196ccd7ab7fSFUJITA Tomonori       def_bool y
197ccd7ab7fSFUJITA Tomonori
198c7edc9e3SDavid A. Longconfig ARCH_SUPPORTS_UPROBES
199c7edc9e3SDavid A. Long	def_bool y
200c7edc9e3SDavid A. Long
20158af4a24SRob Herringconfig ARCH_HAS_DMA_SET_COHERENT_MASK
20258af4a24SRob Herring	bool
20358af4a24SRob Herring
2041da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
2051da177e4SLinus Torvalds	bool
2061da177e4SLinus Torvalds
2071da177e4SLinus Torvaldsconfig FIQ
2081da177e4SLinus Torvalds	bool
2091da177e4SLinus Torvalds
21013a5045dSRob Herringconfig NEED_RET_TO_USER
21113a5045dSRob Herring	bool
21213a5045dSRob Herring
213034d2f5aSAl Viroconfig ARCH_MTD_XIP
214034d2f5aSAl Viro	bool
215034d2f5aSAl Viro
216c760fc19SHyok S. Choiconfig VECTORS_BASE
217c760fc19SHyok S. Choi	hex
2186afd6faeSHyok S. Choi	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
219c760fc19SHyok S. Choi	default DRAM_BASE if REMAP_VECTORS_TO_RAM
220c760fc19SHyok S. Choi	default 0x00000000
221c760fc19SHyok S. Choi	help
22219accfd3SRussell King	  The base address of exception vectors.  This must be two pages
22319accfd3SRussell King	  in size.
224c760fc19SHyok S. Choi
225dc21af99SRussell Kingconfig ARM_PATCH_PHYS_VIRT
226c1becedcSRussell King	bool "Patch physical to virtual translations at runtime" if EMBEDDED
227c1becedcSRussell King	default y
228b511d75dSNicolas Pitre	depends on !XIP_KERNEL && MMU
229dc21af99SRussell King	depends on !ARCH_REALVIEW || !SPARSEMEM
230dc21af99SRussell King	help
231111e9a5cSRussell King	  Patch phys-to-virt and virt-to-phys translation functions at
232111e9a5cSRussell King	  boot and module load time according to the position of the
233111e9a5cSRussell King	  kernel in system memory.
234dc21af99SRussell King
235111e9a5cSRussell King	  This can only be used with non-XIP MMU kernels where the base
236daece596SNicolas Pitre	  of physical memory is at a 16MB boundary.
237dc21af99SRussell King
238c1becedcSRussell King	  Only disable this option if you know that you do not require
239c1becedcSRussell King	  this feature (eg, building a kernel for a single machine) and
240c1becedcSRussell King	  you need to shrink the kernel to the minimal size.
241c1becedcSRussell King
24201464226SRob Herringconfig NEED_MACH_GPIO_H
24301464226SRob Herring	bool
24401464226SRob Herring	help
24501464226SRob Herring	  Select this when mach/gpio.h is required to provide special
24601464226SRob Herring	  definitions for this platform. The need for mach/gpio.h should
24701464226SRob Herring	  be avoided when possible.
24801464226SRob Herring
249c334bc15SRob Herringconfig NEED_MACH_IO_H
250c334bc15SRob Herring	bool
251c334bc15SRob Herring	help
252c334bc15SRob Herring	  Select this when mach/io.h is required to provide special
253c334bc15SRob Herring	  definitions for this platform.  The need for mach/io.h should
254c334bc15SRob Herring	  be avoided when possible.
255c334bc15SRob Herring
2560cdc8b92SNicolas Pitreconfig NEED_MACH_MEMORY_H
2571b9f95f8SNicolas Pitre	bool
258111e9a5cSRussell King	help
2590cdc8b92SNicolas Pitre	  Select this when mach/memory.h is required to provide special
2600cdc8b92SNicolas Pitre	  definitions for this platform.  The need for mach/memory.h should
2610cdc8b92SNicolas Pitre	  be avoided when possible.
2621b9f95f8SNicolas Pitre
2631b9f95f8SNicolas Pitreconfig PHYS_OFFSET
264974c0724SNicolas Pitre	hex "Physical address of main memory" if MMU
2650cdc8b92SNicolas Pitre	depends on !ARM_PATCH_PHYS_VIRT && !NEED_MACH_MEMORY_H
266974c0724SNicolas Pitre	default DRAM_BASE if !MMU
2671b9f95f8SNicolas Pitre	help
2681b9f95f8SNicolas Pitre	  Please provide the physical address corresponding to the
2691b9f95f8SNicolas Pitre	  location of main memory in your system.
270cada3c08SRussell King
27187e040b6SSimon Glassconfig GENERIC_BUG
27287e040b6SSimon Glass	def_bool y
27387e040b6SSimon Glass	depends on BUG
27487e040b6SSimon Glass
2751da177e4SLinus Torvaldssource "init/Kconfig"
2761da177e4SLinus Torvalds
277dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer"
278dc52ddc0SMatt Helsley
2791da177e4SLinus Torvaldsmenu "System Type"
2801da177e4SLinus Torvalds
2813c427975SHyok S. Choiconfig MMU
2823c427975SHyok S. Choi	bool "MMU-based Paged Memory Management Support"
2833c427975SHyok S. Choi	default y
2843c427975SHyok S. Choi	help
2853c427975SHyok S. Choi	  Select if you want MMU-based virtualised addressing space
2863c427975SHyok S. Choi	  support by paged memory management. If unsure, say 'Y'.
2873c427975SHyok S. Choi
288ccf50e23SRussell King#
289ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option
290ccf50e23SRussell King# text.  Please add new entries in the option alphabetic order.
291ccf50e23SRussell King#
2921da177e4SLinus Torvaldschoice
2931da177e4SLinus Torvalds	prompt "ARM system type"
2941420b22bSArnd Bergmann	default ARCH_VERSATILE if !MMU
2951420b22bSArnd Bergmann	default ARCH_MULTIPLATFORM if MMU
2961da177e4SLinus Torvalds
297387798b3SRob Herringconfig ARCH_MULTIPLATFORM
298387798b3SRob Herring	bool "Allow multiple platforms to be selected"
299b1b3f49cSRussell King	depends on MMU
300ddb902ccSRob Herring	select ARCH_WANT_OPTIONAL_GPIOLIB
30142dc836dSOlof Johansson	select ARM_HAS_SG_CHAIN
302387798b3SRob Herring	select ARM_PATCH_PHYS_VIRT
303387798b3SRob Herring	select AUTO_ZRELADDR
3046d0add40SRob Herring	select CLKSRC_OF
30566314223SDinh Nguyen	select COMMON_CLK
306ddb902ccSRob Herring	select GENERIC_CLOCKEVENTS
30708d38bebSWill Deacon	select MIGHT_HAVE_PCI
308387798b3SRob Herring	select MULTI_IRQ_HANDLER
30966314223SDinh Nguyen	select SPARSE_IRQ
31066314223SDinh Nguyen	select USE_OF
31166314223SDinh Nguyen
3124af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR
3134af6fee1SDeepak Saxena	bool "ARM Ltd. Integrator family"
314b1b3f49cSRussell King	select ARM_AMBA
315fe989145Spanchaxari	select ARM_PATCH_PHYS_VIRT
316fe989145Spanchaxari	select AUTO_ZRELADDR
317a613163dSLinus Walleij	select COMMON_CLK
318f9a6aa43SLinus Walleij	select COMMON_CLK_VERSATILE
319b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
3209904f793SLinus Walleij	select HAVE_TCM
321c5a0adb5SRussell King	select ICST
322b1b3f49cSRussell King	select MULTI_IRQ_HANDLER
323b1b3f49cSRussell King	select NEED_MACH_MEMORY_H
324f4b8b319SRussell King	select PLAT_VERSATILE
325695436e3SLinus Walleij	select SPARSE_IRQ
326d7057e1dSLinus Walleij	select USE_OF
3272389d501SLinus Walleij	select VERSATILE_FPGA_IRQ
3284af6fee1SDeepak Saxena	help
3294af6fee1SDeepak Saxena	  Support for ARM's Integrator platform.
3304af6fee1SDeepak Saxena
3314af6fee1SDeepak Saxenaconfig ARCH_REALVIEW
3324af6fee1SDeepak Saxena	bool "ARM Ltd. RealView family"
333b1b3f49cSRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
3344af6fee1SDeepak Saxena	select ARM_AMBA
335b1b3f49cSRussell King	select ARM_TIMER_SP804
336f9a6aa43SLinus Walleij	select COMMON_CLK
337f9a6aa43SLinus Walleij	select COMMON_CLK_VERSATILE
338ae30ceacSCatalin Marinas	select GENERIC_CLOCKEVENTS
339b1b3f49cSRussell King	select GPIO_PL061 if GPIOLIB
340b1b3f49cSRussell King	select ICST
341b1b3f49cSRussell King	select NEED_MACH_MEMORY_H
342f4b8b319SRussell King	select PLAT_VERSATILE
3433cb5ee49SRussell King	select PLAT_VERSATILE_CLCD
3444af6fee1SDeepak Saxena	help
3454af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
3464af6fee1SDeepak Saxena
3474af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
3484af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
349b1b3f49cSRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
3504af6fee1SDeepak Saxena	select ARM_AMBA
351b1b3f49cSRussell King	select ARM_TIMER_SP804
3524af6fee1SDeepak Saxena	select ARM_VIC
3536d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
354b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
355aa3831cfSKyungmin Park	select HAVE_MACH_CLKDEV
356c5a0adb5SRussell King	select ICST
357f4b8b319SRussell King	select PLAT_VERSATILE
3583414ba8cSRussell King	select PLAT_VERSATILE_CLCD
359b1b3f49cSRussell King	select PLAT_VERSATILE_CLOCK
3602389d501SLinus Walleij	select VERSATILE_FPGA_IRQ
3614af6fee1SDeepak Saxena	help
3624af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
3634af6fee1SDeepak Saxena
3648fc5ffa0SAndrew Victorconfig ARCH_AT91
3658fc5ffa0SAndrew Victor	bool "Atmel AT91"
366f373e8c0SRyan Mallon	select ARCH_REQUIRE_GPIOLIB
367bd602995SJean-Christophe PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
368e261501dSNicolas Ferre	select IRQ_DOMAIN
3691ac02d79SRob Herring	select NEED_MACH_IO_H if PCCARD
3706732ae5cSJean-Christophe PLAGNIOL-VILLARD	select PINCTRL
3716732ae5cSJean-Christophe PLAGNIOL-VILLARD	select PINCTRL_AT91 if USE_OF
3724af6fee1SDeepak Saxena	help
373929e994fSNicolas Ferre	  This enables support for systems based on Atmel
374929e994fSNicolas Ferre	  AT91RM9200 and AT91SAM9* processors.
3754af6fee1SDeepak Saxena
37693e22567SRussell Kingconfig ARCH_CLPS711X
37793e22567SRussell King	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
378a3b8d4a5SAlexander Shiyan	select ARCH_REQUIRE_GPIOLIB
379ea7d1bc9SAlexander Shiyan	select AUTO_ZRELADDR
380c99f72adSAlexander Shiyan	select CLKSRC_MMIO
38193e22567SRussell King	select COMMON_CLK
38293e22567SRussell King	select CPU_ARM720T
3834a8355c4SAlexander Shiyan	select GENERIC_CLOCKEVENTS
3846597619fSAlexander Shiyan	select MFD_SYSCON
38593e22567SRussell King	help
38693e22567SRussell King	  Support for Cirrus Logic 711x/721x/731x based boards.
38793e22567SRussell King
388788c9700SRussell Kingconfig ARCH_GEMINI
389788c9700SRussell King	bool "Cortina Systems Gemini"
390788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
391f3372c01SLinus Walleij	select CLKSRC_MMIO
392b1b3f49cSRussell King	select CPU_FA526
393f3372c01SLinus Walleij	select GENERIC_CLOCKEVENTS
394788c9700SRussell King	help
395788c9700SRussell King	  Support for the Cortina Systems Gemini family SoCs
396788c9700SRussell King
3971da177e4SLinus Torvaldsconfig ARCH_EBSA110
3981da177e4SLinus Torvalds	bool "EBSA-110"
399b1b3f49cSRussell King	select ARCH_USES_GETTIMEOFFSET
400c750815eSRussell King	select CPU_SA110
401f7e68bbfSRussell King	select ISA
402c334bc15SRob Herring	select NEED_MACH_IO_H
4030cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
404ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
4051da177e4SLinus Torvalds	help
4061da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
407f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
4081da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
4091da177e4SLinus Torvalds	  parallel port.
4101da177e4SLinus Torvalds
4116d85e2b0SUwe Kleine-Königconfig ARCH_EFM32
4126d85e2b0SUwe Kleine-König	bool "Energy Micro efm32"
4136d85e2b0SUwe Kleine-König	depends on !MMU
4146d85e2b0SUwe Kleine-König	select ARCH_REQUIRE_GPIOLIB
4156d85e2b0SUwe Kleine-König	select ARM_NVIC
41651aaf81fSRussell King	select AUTO_ZRELADDR
4176d85e2b0SUwe Kleine-König	select CLKSRC_OF
4186d85e2b0SUwe Kleine-König	select COMMON_CLK
4196d85e2b0SUwe Kleine-König	select CPU_V7M
4206d85e2b0SUwe Kleine-König	select GENERIC_CLOCKEVENTS
4216d85e2b0SUwe Kleine-König	select NO_DMA
422ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
4236d85e2b0SUwe Kleine-König	select SPARSE_IRQ
4246d85e2b0SUwe Kleine-König	select USE_OF
4256d85e2b0SUwe Kleine-König	help
4266d85e2b0SUwe Kleine-König	  Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
4276d85e2b0SUwe Kleine-König	  processors.
4286d85e2b0SUwe Kleine-König
429e7736d47SLennert Buytenhekconfig ARCH_EP93XX
430e7736d47SLennert Buytenhek	bool "EP93xx-based"
431b1b3f49cSRussell King	select ARCH_HAS_HOLES_MEMORYMODEL
432b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
433b1b3f49cSRussell King	select ARCH_USES_GETTIMEOFFSET
434e7736d47SLennert Buytenhek	select ARM_AMBA
435e7736d47SLennert Buytenhek	select ARM_VIC
4366d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
437b1b3f49cSRussell King	select CPU_ARM920T
4385725aeaeSArnd Bergmann	select NEED_MACH_MEMORY_H
439e7736d47SLennert Buytenhek	help
440e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
441e7736d47SLennert Buytenhek
4421da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
4431da177e4SLinus Torvalds	bool "FootBridge"
444c750815eSRussell King	select CPU_SA110
4451da177e4SLinus Torvalds	select FOOTBRIDGE
4464e8d7637SRussell King	select GENERIC_CLOCKEVENTS
447d0ee9f40SArnd Bergmann	select HAVE_IDE
4488ef6e620SRob Herring	select NEED_MACH_IO_H if !MMU
4490cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
450f999b8bdSMartin Michlmayr	help
451f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
452f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
4531da177e4SLinus Torvalds
4544af6fee1SDeepak Saxenaconfig ARCH_NETX
4554af6fee1SDeepak Saxena	bool "Hilscher NetX based"
456b1b3f49cSRussell King	select ARM_VIC
457234b6cedSRussell King	select CLKSRC_MMIO
458c750815eSRussell King	select CPU_ARM926T
4592fcfe6b8SUwe Kleine-König	select GENERIC_CLOCKEVENTS
460f999b8bdSMartin Michlmayr	help
4614af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
4624af6fee1SDeepak Saxena
4633b938be6SRussell Kingconfig ARCH_IOP13XX
4643b938be6SRussell King	bool "IOP13xx-based"
4653b938be6SRussell King	depends on MMU
466b1b3f49cSRussell King	select CPU_XSC3
4670cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
46813a5045dSRob Herring	select NEED_RET_TO_USER
469b1b3f49cSRussell King	select PCI
470b1b3f49cSRussell King	select PLAT_IOP
471b1b3f49cSRussell King	select VMSPLIT_1G
47237ebbcffSThomas Gleixner	select SPARSE_IRQ
4733b938be6SRussell King	help
4743b938be6SRussell King	  Support for Intel's IOP13XX (XScale) family of processors.
4753b938be6SRussell King
4763f7e5815SLennert Buytenhekconfig ARCH_IOP32X
4773f7e5815SLennert Buytenhek	bool "IOP32x-based"
478a4f7e763SRussell King	depends on MMU
479b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
480c750815eSRussell King	select CPU_XSCALE
481e9004f50SLinus Walleij	select GPIO_IOP
48213a5045dSRob Herring	select NEED_RET_TO_USER
483f7e68bbfSRussell King	select PCI
484b1b3f49cSRussell King	select PLAT_IOP
485f999b8bdSMartin Michlmayr	help
4863f7e5815SLennert Buytenhek	  Support for Intel's 80219 and IOP32X (XScale) family of
4873f7e5815SLennert Buytenhek	  processors.
4883f7e5815SLennert Buytenhek
4893f7e5815SLennert Buytenhekconfig ARCH_IOP33X
4903f7e5815SLennert Buytenhek	bool "IOP33x-based"
4913f7e5815SLennert Buytenhek	depends on MMU
492b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
493c750815eSRussell King	select CPU_XSCALE
494e9004f50SLinus Walleij	select GPIO_IOP
49513a5045dSRob Herring	select NEED_RET_TO_USER
4963f7e5815SLennert Buytenhek	select PCI
497b1b3f49cSRussell King	select PLAT_IOP
4983f7e5815SLennert Buytenhek	help
4993f7e5815SLennert Buytenhek	  Support for Intel's IOP33X (XScale) family of processors.
5001da177e4SLinus Torvalds
5013b938be6SRussell Kingconfig ARCH_IXP4XX
5023b938be6SRussell King	bool "IXP4xx-based"
503a4f7e763SRussell King	depends on MMU
50458af4a24SRob Herring	select ARCH_HAS_DMA_SET_COHERENT_MASK
505b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
50651aaf81fSRussell King	select ARCH_SUPPORTS_BIG_ENDIAN
507234b6cedSRussell King	select CLKSRC_MMIO
508c750815eSRussell King	select CPU_XSCALE
509b1b3f49cSRussell King	select DMABOUNCE if PCI
5103b938be6SRussell King	select GENERIC_CLOCKEVENTS
5110b05da72SHans Ulli Kroll	select MIGHT_HAVE_PCI
512c334bc15SRob Herring	select NEED_MACH_IO_H
5139296d94dSFlorian Fainelli	select USB_EHCI_BIG_ENDIAN_DESC
514171b3f0dSRussell King	select USB_EHCI_BIG_ENDIAN_MMIO
515c4713074SLennert Buytenhek	help
5163b938be6SRussell King	  Support for Intel's IXP4XX (XScale) family of processors.
517c4713074SLennert Buytenhek
518edabd38eSSaeed Bisharaconfig ARCH_DOVE
519edabd38eSSaeed Bishara	bool "Marvell Dove"
520edabd38eSSaeed Bishara	select ARCH_REQUIRE_GPIOLIB
521756b2531SSebastian Hesselbarth	select CPU_PJ4
522edabd38eSSaeed Bishara	select GENERIC_CLOCKEVENTS
5230f81bd43SRussell King	select MIGHT_HAVE_PCI
524171b3f0dSRussell King	select MVEBU_MBUS
5259139acd1SSebastian Hesselbarth	select PINCTRL
5269139acd1SSebastian Hesselbarth	select PINCTRL_DOVE
527abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
528edabd38eSSaeed Bishara	help
529edabd38eSSaeed Bishara	  Support for the Marvell Dove SoC 88AP510
530edabd38eSSaeed Bishara
531651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD
532651c74c7SSaeed Bishara	bool "Marvell Kirkwood"
533a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
534b1b3f49cSRussell King	select CPU_FEROCEON
535651c74c7SSaeed Bishara	select GENERIC_CLOCKEVENTS
536171b3f0dSRussell King	select MVEBU_MBUS
537b1b3f49cSRussell King	select PCI
5381dc831bfSJason Gunthorpe	select PCI_QUIRKS
539f9e75922SAndrew Lunn	select PINCTRL
540f9e75922SAndrew Lunn	select PINCTRL_KIRKWOOD
541abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
542651c74c7SSaeed Bishara	help
543651c74c7SSaeed Bishara	  Support for the following Marvell Kirkwood series SoCs:
544651c74c7SSaeed Bishara	  88F6180, 88F6192 and 88F6281.
545651c74c7SSaeed Bishara
546788c9700SRussell Kingconfig ARCH_MV78XX0
547788c9700SRussell King	bool "Marvell MV78xx0"
548a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
549b1b3f49cSRussell King	select CPU_FEROCEON
550788c9700SRussell King	select GENERIC_CLOCKEVENTS
551171b3f0dSRussell King	select MVEBU_MBUS
552b1b3f49cSRussell King	select PCI
553abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
554788c9700SRussell King	help
555788c9700SRussell King	  Support for the following Marvell MV78xx0 series SoCs:
556788c9700SRussell King	  MV781x0, MV782x0.
557788c9700SRussell King
558788c9700SRussell Kingconfig ARCH_ORION5X
559788c9700SRussell King	bool "Marvell Orion"
560788c9700SRussell King	depends on MMU
561a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
562b1b3f49cSRussell King	select CPU_FEROCEON
563788c9700SRussell King	select GENERIC_CLOCKEVENTS
564171b3f0dSRussell King	select MVEBU_MBUS
565b1b3f49cSRussell King	select PCI
566abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
567788c9700SRussell King	help
568788c9700SRussell King	  Support for the following Marvell Orion 5x series SoCs:
569788c9700SRussell King	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
570788c9700SRussell King	  Orion-2 (5281), Orion-1-90 (6183).
571788c9700SRussell King
572788c9700SRussell Kingconfig ARCH_MMP
5732f7e8faeSHaojian Zhuang	bool "Marvell PXA168/910/MMP2"
574788c9700SRussell King	depends on MMU
575788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
5766d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
577b1b3f49cSRussell King	select GENERIC_ALLOCATOR
578788c9700SRussell King	select GENERIC_CLOCKEVENTS
579157d2644SHaojian Zhuang	select GPIO_PXA
580c24b3114SHaojian Zhuang	select IRQ_DOMAIN
5810f374561SHaojian Zhuang	select MULTI_IRQ_HANDLER
5827c8f86a4SAxel Lin	select PINCTRL
583788c9700SRussell King	select PLAT_PXA
5840bd86961SHaojian Zhuang	select SPARSE_IRQ
585788c9700SRussell King	help
5862f7e8faeSHaojian Zhuang	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
587788c9700SRussell King
588c53c9cf6SAndrew Victorconfig ARCH_KS8695
589c53c9cf6SAndrew Victor	bool "Micrel/Kendin KS8695"
59072880ad8SDaniel Silverstone	select ARCH_REQUIRE_GPIOLIB
591c7e783d6SLinus Walleij	select CLKSRC_MMIO
592b1b3f49cSRussell King	select CPU_ARM922T
593c7e783d6SLinus Walleij	select GENERIC_CLOCKEVENTS
594b1b3f49cSRussell King	select NEED_MACH_MEMORY_H
595c53c9cf6SAndrew Victor	help
596c53c9cf6SAndrew Victor	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
597c53c9cf6SAndrew Victor	  System-on-Chip devices.
598c53c9cf6SAndrew Victor
599788c9700SRussell Kingconfig ARCH_W90X900
600788c9700SRussell King	bool "Nuvoton W90X900 CPU"
601c52d3d68Swanzongshun	select ARCH_REQUIRE_GPIOLIB
6026d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
6036fa5d5f7SRussell King	select CLKSRC_MMIO
604b1b3f49cSRussell King	select CPU_ARM926T
60558b5369eSwanzongshun	select GENERIC_CLOCKEVENTS
606777f9bebSLennert Buytenhek	help
607a8bc4eadSwanzongshun	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
608a8bc4eadSwanzongshun	  At present, the w90x900 has been renamed nuc900, regarding
609a8bc4eadSwanzongshun	  the ARM series product line, you can login the following
610a8bc4eadSwanzongshun	  link address to know more.
611a8bc4eadSwanzongshun
612a8bc4eadSwanzongshun	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
613a8bc4eadSwanzongshun		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
614585cf175STzachi Perelstein
61593e22567SRussell Kingconfig ARCH_LPC32XX
61693e22567SRussell King	bool "NXP LPC32XX"
61793e22567SRussell King	select ARCH_REQUIRE_GPIOLIB
61893e22567SRussell King	select ARM_AMBA
6194073723aSRussell King	select CLKDEV_LOOKUP
620234b6cedSRussell King	select CLKSRC_MMIO
62193e22567SRussell King	select CPU_ARM926T
62293e22567SRussell King	select GENERIC_CLOCKEVENTS
62393e22567SRussell King	select HAVE_IDE
62493e22567SRussell King	select USE_OF
62593e22567SRussell King	help
62693e22567SRussell King	  Support for the NXP LPC32XX family of processors
62793e22567SRussell King
6281da177e4SLinus Torvaldsconfig ARCH_PXA
6292c8086a5Seric miao	bool "PXA2xx/PXA3xx-based"
630a4f7e763SRussell King	depends on MMU
631b1b3f49cSRussell King	select ARCH_MTD_XIP
632b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
633b1b3f49cSRussell King	select ARM_CPU_SUSPEND if PM
634b1b3f49cSRussell King	select AUTO_ZRELADDR
6356d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
636234b6cedSRussell King	select CLKSRC_MMIO
637981d0f39SEric Miao	select GENERIC_CLOCKEVENTS
638157d2644SHaojian Zhuang	select GPIO_PXA
639b1b3f49cSRussell King	select HAVE_IDE
640b1b3f49cSRussell King	select MULTI_IRQ_HANDLER
641bd5ce433SEric Miao	select PLAT_PXA
6426ac6b817SHaojian Zhuang	select SPARSE_IRQ
643f999b8bdSMartin Michlmayr	help
6442c8086a5Seric miao	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
6451da177e4SLinus Torvalds
6468fc1b0f8SKumar Galaconfig ARCH_MSM
6478fc1b0f8SKumar Gala	bool "Qualcomm MSM (non-multiplatform)"
648923a081cSPavel Machek	select ARCH_REQUIRE_GPIOLIB
6498cc7f533SStephen Boyd	select COMMON_CLK
650b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
65149cbe786SEric Miao	help
6524b53eb4fSDaniel Walker	  Support for Qualcomm MSM/QSD based systems.  This runs on the
6534b53eb4fSDaniel Walker	  apps processor of the MSM/QSD and depends on a shared memory
6544b53eb4fSDaniel Walker	  interface to the modem processor which runs the baseband
6554b53eb4fSDaniel Walker	  stack and controls some vital subsystems
6564b53eb4fSDaniel Walker	  (clock and power control, etc).
65749cbe786SEric Miao
658bf98c1eaSLaurent Pinchartconfig ARCH_SHMOBILE_LEGACY
6590d9fd616SLaurent Pinchart	bool "Renesas ARM SoCs (non-multiplatform)"
660bf98c1eaSLaurent Pinchart	select ARCH_SHMOBILE
66169469995SMagnus Damm	select ARM_PATCH_PHYS_VIRT
6625e93c6b4SPaul Mundt	select CLKDEV_LOOKUP
663b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
6644c3ffffdSStephen Boyd	select HAVE_ARM_SCU if SMP
665a894fcc2SStephen Boyd	select HAVE_ARM_TWD if SMP
666aa3831cfSKyungmin Park	select HAVE_MACH_CLKDEV
6673b55658aSDave Martin	select HAVE_SMP
668ce5ea9f3SDave Martin	select MIGHT_HAVE_CACHE_L2X0
66960f1435cSMagnus Damm	select MULTI_IRQ_HANDLER
670ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
6712cd3c927SLaurent Pinchart	select PINCTRL
672b1b3f49cSRussell King	select PM_GENERIC_DOMAINS if PM
673b1b3f49cSRussell King	select SPARSE_IRQ
674c793c1b0SMagnus Damm	help
6750d9fd616SLaurent Pinchart	  Support for Renesas ARM SoC platforms using a non-multiplatform
6760d9fd616SLaurent Pinchart	  kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
6770d9fd616SLaurent Pinchart	  and RZ families.
678c793c1b0SMagnus Damm
6791da177e4SLinus Torvaldsconfig ARCH_RPC
6801da177e4SLinus Torvalds	bool "RiscPC"
6811da177e4SLinus Torvalds	select ARCH_ACORN
682a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
68307f841b7SRussell King	select ARCH_SPARSEMEM_ENABLE
6845cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
685fa04e209SArnd Bergmann	select CPU_SA110
686b1b3f49cSRussell King	select FIQ
687d0ee9f40SArnd Bergmann	select HAVE_IDE
688b1b3f49cSRussell King	select HAVE_PATA_PLATFORM
689b1b3f49cSRussell King	select ISA_DMA_API
690c334bc15SRob Herring	select NEED_MACH_IO_H
6910cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
692ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
693b4811bacSArnd Bergmann	select VIRT_TO_BUS
6941da177e4SLinus Torvalds	help
6951da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
6961da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
6971da177e4SLinus Torvalds
6981da177e4SLinus Torvaldsconfig ARCH_SA1100
6991da177e4SLinus Torvalds	bool "SA1100-based"
700b1b3f49cSRussell King	select ARCH_MTD_XIP
7017444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
702b1b3f49cSRussell King	select ARCH_SPARSEMEM_ENABLE
703b1b3f49cSRussell King	select CLKDEV_LOOKUP
704b1b3f49cSRussell King	select CLKSRC_MMIO
705b1b3f49cSRussell King	select CPU_FREQ
706b1b3f49cSRussell King	select CPU_SA1100
707b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
708d0ee9f40SArnd Bergmann	select HAVE_IDE
709b1b3f49cSRussell King	select ISA
7100cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
711375dec92SRussell King	select SPARSE_IRQ
712f999b8bdSMartin Michlmayr	help
713f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
7141da177e4SLinus Torvalds
715b130d5c2SKukjin Kimconfig ARCH_S3C24XX
716b130d5c2SKukjin Kim	bool "Samsung S3C24XX SoCs"
71753650430SKukjin Kim	select ARCH_REQUIRE_GPIOLIB
718335cce74SArnd Bergmann	select ATAGS
719b1b3f49cSRussell King	select CLKDEV_LOOKUP
7204280506aSTomasz Figa	select CLKSRC_SAMSUNG_PWM
7217f78b6ebSRomain Naour	select GENERIC_CLOCKEVENTS
722880cf071STomasz Figa	select GPIO_SAMSUNG
72320676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
724b130d5c2SKukjin Kim	select HAVE_S3C2410_WATCHDOG if WATCHDOG
725b1b3f49cSRussell King	select HAVE_S3C_RTC if RTC_CLASS
72617453dd2SHeiko Stuebner	select MULTI_IRQ_HANDLER
727c334bc15SRob Herring	select NEED_MACH_IO_H
728cd8dc7aeSTomasz Figa	select SAMSUNG_ATAGS
7291da177e4SLinus Torvalds	help
730b130d5c2SKukjin Kim	  Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
731b130d5c2SKukjin Kim	  and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
732b130d5c2SKukjin Kim	  (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
733b130d5c2SKukjin Kim	  Samsung SMDK2410 development board (and derivatives).
73463b1f51bSBen Dooks
735a08ab637SBen Dooksconfig ARCH_S3C64XX
736a08ab637SBen Dooks	bool "Samsung S3C64XX"
73789f0ce72SBen Dooks	select ARCH_REQUIRE_GPIOLIB
7381db0287aSTomasz Figa	select ARM_AMBA
739b1b3f49cSRussell King	select ARM_VIC
740335cce74SArnd Bergmann	select ATAGS
741b1b3f49cSRussell King	select CLKDEV_LOOKUP
7424280506aSTomasz Figa	select CLKSRC_SAMSUNG_PWM
743ccecba3cSPankaj Dubey	select COMMON_CLK_SAMSUNG
74470bacadbSTomasz Figa	select CPU_V6K
74504a49b71SRomain Naour	select GENERIC_CLOCKEVENTS
746880cf071STomasz Figa	select GPIO_SAMSUNG
74720676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
748c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
749b1b3f49cSRussell King	select HAVE_TCM
750ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
751b1b3f49cSRussell King	select PLAT_SAMSUNG
7524ab75a3fSArnd Bergmann	select PM_GENERIC_DOMAINS if PM
753b1b3f49cSRussell King	select S3C_DEV_NAND
754b1b3f49cSRussell King	select S3C_GPIO_TRACK
755cd8dc7aeSTomasz Figa	select SAMSUNG_ATAGS
7566e2d9e93STomasz Figa	select SAMSUNG_WAKEMASK
75788f59738STomasz Figa	select SAMSUNG_WDT_RESET
758a08ab637SBen Dooks	help
759a08ab637SBen Dooks	  Samsung S3C64XX series based systems
760a08ab637SBen Dooks
7617c6337e2SKevin Hilmanconfig ARCH_DAVINCI
7627c6337e2SKevin Hilman	bool "TI DaVinci"
763b1b3f49cSRussell King	select ARCH_HAS_HOLES_MEMORYMODEL
764dce1115bSDavid Brownell	select ARCH_REQUIRE_GPIOLIB
7656d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
76620e9969bSDavid Brownell	select GENERIC_ALLOCATOR
767b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
768dc7ad3b3SRussell King	select GENERIC_IRQ_CHIP
769b1b3f49cSRussell King	select HAVE_IDE
7703ad7a42dSMatt Porter	select TI_PRIV_EDMA
771689e331fSSekhar Nori	select USE_OF
772b1b3f49cSRussell King	select ZONE_DMA
7737c6337e2SKevin Hilman	help
7747c6337e2SKevin Hilman	  Support for TI's DaVinci platform.
7757c6337e2SKevin Hilman
776a0694861STony Lindgrenconfig ARCH_OMAP1
777a0694861STony Lindgren	bool "TI OMAP1"
77800a36698SArnd Bergmann	depends on MMU
779b1b3f49cSRussell King	select ARCH_HAS_HOLES_MEMORYMODEL
780a0694861STony Lindgren	select ARCH_OMAP
78121f47fbcSAlexey Charkov	select ARCH_REQUIRE_GPIOLIB
782e9a91de7STony Prisk	select CLKDEV_LOOKUP
783cee37e50Sviresh kumar	select CLKSRC_MMIO
784b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
785a0694861STony Lindgren	select GENERIC_IRQ_CHIP
786a0694861STony Lindgren	select HAVE_IDE
787a0694861STony Lindgren	select IRQ_DOMAIN
788a0694861STony Lindgren	select NEED_MACH_IO_H if PCCARD
789a0694861STony Lindgren	select NEED_MACH_MEMORY_H
79021f47fbcSAlexey Charkov	help
791a0694861STony Lindgren	  Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
79202c981c0SBinghua Duan
7931da177e4SLinus Torvaldsendchoice
7941da177e4SLinus Torvalds
795387798b3SRob Herringmenu "Multiple platform selection"
796387798b3SRob Herring	depends on ARCH_MULTIPLATFORM
797387798b3SRob Herring
798387798b3SRob Herringcomment "CPU Core family selection"
799387798b3SRob Herring
800f8afae40SArnd Bergmannconfig ARCH_MULTI_V4
801f8afae40SArnd Bergmann	bool "ARMv4 based platforms (FA526)"
802f8afae40SArnd Bergmann	depends on !ARCH_MULTI_V6_V7
803f8afae40SArnd Bergmann	select ARCH_MULTI_V4_V5
804f8afae40SArnd Bergmann	select CPU_FA526
805f8afae40SArnd Bergmann
806387798b3SRob Herringconfig ARCH_MULTI_V4T
807387798b3SRob Herring	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
808387798b3SRob Herring	depends on !ARCH_MULTI_V6_V7
809b1b3f49cSRussell King	select ARCH_MULTI_V4_V5
81024e860fbSArnd Bergmann	select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
81124e860fbSArnd Bergmann		CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
81224e860fbSArnd Bergmann		CPU_ARM925T || CPU_ARM940T)
813387798b3SRob Herring
814387798b3SRob Herringconfig ARCH_MULTI_V5
815387798b3SRob Herring	bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
816387798b3SRob Herring	depends on !ARCH_MULTI_V6_V7
817b1b3f49cSRussell King	select ARCH_MULTI_V4_V5
81812567bbdSAndrew Lunn	select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
81924e860fbSArnd Bergmann		CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
82024e860fbSArnd Bergmann		CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
821387798b3SRob Herring
822387798b3SRob Herringconfig ARCH_MULTI_V4_V5
823387798b3SRob Herring	bool
824387798b3SRob Herring
825387798b3SRob Herringconfig ARCH_MULTI_V6
8268dda05ccSStephen Boyd	bool "ARMv6 based platforms (ARM11)"
827387798b3SRob Herring	select ARCH_MULTI_V6_V7
82842f4754aSRob Herring	select CPU_V6K
829387798b3SRob Herring
830387798b3SRob Herringconfig ARCH_MULTI_V7
8318dda05ccSStephen Boyd	bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
832387798b3SRob Herring	default y
833387798b3SRob Herring	select ARCH_MULTI_V6_V7
834b1b3f49cSRussell King	select CPU_V7
83590bc8ac7SRob Herring	select HAVE_SMP
836387798b3SRob Herring
837387798b3SRob Herringconfig ARCH_MULTI_V6_V7
838387798b3SRob Herring	bool
8399352b05bSRob Herring	select MIGHT_HAVE_CACHE_L2X0
840387798b3SRob Herring
841387798b3SRob Herringconfig ARCH_MULTI_CPU_AUTO
842387798b3SRob Herring	def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
843387798b3SRob Herring	select ARCH_MULTI_V5
844387798b3SRob Herring
845387798b3SRob Herringendmenu
846387798b3SRob Herring
84705e2a3deSRob Herringconfig ARCH_VIRT
84805e2a3deSRob Herring	bool "Dummy Virtual Machine" if ARCH_MULTI_V7
8494b8b5f25SRob Herring	select ARM_AMBA
85005e2a3deSRob Herring	select ARM_GIC
85105e2a3deSRob Herring	select ARM_PSCI
8524b8b5f25SRob Herring	select HAVE_ARM_ARCH_TIMER
85305e2a3deSRob Herring
854ccf50e23SRussell King#
855ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname.  However, plat-*
856ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the
857ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source.
858ccf50e23SRussell King#
8593e93a22bSGregory CLEMENTsource "arch/arm/mach-mvebu/Kconfig"
8603e93a22bSGregory CLEMENT
86195b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig"
86295b8f20fSRussell King
8631d22924eSAnders Bergsource "arch/arm/mach-axxia/Kconfig"
8641d22924eSAnders Berg
8658ac49e04SChristian Daudtsource "arch/arm/mach-bcm/Kconfig"
8668ac49e04SChristian Daudt
8671c37fa10SSebastian Hesselbarthsource "arch/arm/mach-berlin/Kconfig"
8681c37fa10SSebastian Hesselbarth
8691da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
8701da177e4SLinus Torvalds
871d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig"
872d94f944eSAnton Vorontsov
87395b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig"
87495b8f20fSRussell King
87595b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig"
87695b8f20fSRussell King
877e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
878e7736d47SLennert Buytenhek
8791da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
8801da177e4SLinus Torvalds
88159d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig"
88259d3a193SPaulius Zaleckas
883387798b3SRob Herringsource "arch/arm/mach-highbank/Kconfig"
884387798b3SRob Herring
885389ee0c2SHaojian Zhuangsource "arch/arm/mach-hisi/Kconfig"
886389ee0c2SHaojian Zhuang
8871da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
8881da177e4SLinus Torvalds
8893f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig"
8903f7e5815SLennert Buytenhek
8913f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig"
8921da177e4SLinus Torvalds
893285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig"
894285f5fa7SDan Williams
8951da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
8961da177e4SLinus Torvalds
897828989adSSantosh Shilimkarsource "arch/arm/mach-keystone/Kconfig"
898828989adSSantosh Shilimkar
89995b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig"
90095b8f20fSRussell King
90195b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig"
90295b8f20fSRussell King
90395b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig"
90495b8f20fSRussell King
90517723fd3SJonas Jensensource "arch/arm/mach-moxart/Kconfig"
90617723fd3SJonas Jensen
907794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig"
908794d15b2SStanislav Samsonov
9093995eb82SShawn Guosource "arch/arm/mach-imx/Kconfig"
9101da177e4SLinus Torvalds
9111d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig"
9121d3f33d5SShawn Guo
91395b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig"
91449cbe786SEric Miao
91595b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig"
91695b8f20fSRussell King
9179851ca57SDaniel Tangsource "arch/arm/mach-nspire/Kconfig"
9189851ca57SDaniel Tang
919d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
920d48af15eSTony Lindgren
921d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
9221da177e4SLinus Torvalds
9231dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
9241dbae815STony Lindgren
9259dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig"
926585cf175STzachi Perelstein
927387798b3SRob Herringsource "arch/arm/mach-picoxcell/Kconfig"
928387798b3SRob Herring
92995b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig"
93095b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig"
9311da177e4SLinus Torvalds
93295b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig"
93395b8f20fSRussell King
9348fc1b0f8SKumar Galasource "arch/arm/mach-qcom/Kconfig"
9358fc1b0f8SKumar Gala
93695b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig"
93795b8f20fSRussell King
938d63dc051SHeiko Stuebnersource "arch/arm/mach-rockchip/Kconfig"
939d63dc051SHeiko Stuebner
94095b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig"
941edabd38eSSaeed Bishara
942387798b3SRob Herringsource "arch/arm/mach-socfpga/Kconfig"
943387798b3SRob Herring
944a7ed099fSArnd Bergmannsource "arch/arm/mach-spear/Kconfig"
945a21765a7SBen Dooks
94665ebcc11SSrinivas Kandagatlasource "arch/arm/mach-sti/Kconfig"
94765ebcc11SSrinivas Kandagatla
94885fd6d63SKukjin Kimsource "arch/arm/mach-s3c24xx/Kconfig"
9491da177e4SLinus Torvalds
950431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig"
951a08ab637SBen Dooks
952170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig"
953170f4e42SKukjin Kim
95483014579SKukjin Kimsource "arch/arm/mach-exynos/Kconfig"
955e509b289SRob Herringsource "arch/arm/plat-samsung/Kconfig"
956cc0e72b8SChanghwan Youn
957882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig"
9581da177e4SLinus Torvalds
9593b52634fSMaxime Ripardsource "arch/arm/mach-sunxi/Kconfig"
9603b52634fSMaxime Ripard
961156a0997SBarry Songsource "arch/arm/mach-prima2/Kconfig"
962156a0997SBarry Song
963c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig"
964c5f80065SErik Gilling
96595b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig"
9661da177e4SLinus Torvalds
96795b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig"
9681da177e4SLinus Torvalds
9691da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
9701da177e4SLinus Torvalds
971ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig"
972420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig"
973ceade897SRussell King
9746f35f9a9STony Prisksource "arch/arm/mach-vt8500/Kconfig"
9756f35f9a9STony Prisk
9767ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig"
9777ec80ddfSwanzongshun
9789a45eb69SJosh Cartwrightsource "arch/arm/mach-zynq/Kconfig"
9799a45eb69SJosh Cartwright
9801da177e4SLinus Torvalds# Definitions to make life easier
9811da177e4SLinus Torvaldsconfig ARCH_ACORN
9821da177e4SLinus Torvalds	bool
9831da177e4SLinus Torvalds
9847ae1f7ecSLennert Buytenhekconfig PLAT_IOP
9857ae1f7ecSLennert Buytenhek	bool
986469d3044SMikael Pettersson	select GENERIC_CLOCKEVENTS
9877ae1f7ecSLennert Buytenhek
98869b02f6aSLennert Buytenhekconfig PLAT_ORION
98969b02f6aSLennert Buytenhek	bool
990bfe45e0bSRussell King	select CLKSRC_MMIO
991b1b3f49cSRussell King	select COMMON_CLK
992dc7ad3b3SRussell King	select GENERIC_IRQ_CHIP
993278b45b0SAndrew Lunn	select IRQ_DOMAIN
99469b02f6aSLennert Buytenhek
995abcda1dcSThomas Petazzoniconfig PLAT_ORION_LEGACY
996abcda1dcSThomas Petazzoni	bool
997abcda1dcSThomas Petazzoni	select PLAT_ORION
998abcda1dcSThomas Petazzoni
999bd5ce433SEric Miaoconfig PLAT_PXA
1000bd5ce433SEric Miao	bool
1001bd5ce433SEric Miao
1002f4b8b319SRussell Kingconfig PLAT_VERSATILE
1003f4b8b319SRussell King	bool
1004f4b8b319SRussell King
1005e3887714SRussell Kingconfig ARM_TIMER_SP804
1006e3887714SRussell King	bool
1007bfe45e0bSRussell King	select CLKSRC_MMIO
10087a0eca71SRob Herring	select CLKSRC_OF if OF
1009e3887714SRussell King
1010d9a1beaaSAlexandre Courbotsource "arch/arm/firmware/Kconfig"
1011d9a1beaaSAlexandre Courbot
10121da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
10131da177e4SLinus Torvalds
1014afe4b25eSLennert Buytenhekconfig IWMMXT
1015d93003e8SSebastian Hesselbarth	bool "Enable iWMMXt support"
1016d93003e8SSebastian Hesselbarth	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1017d93003e8SSebastian Hesselbarth	default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
1018afe4b25eSLennert Buytenhek	help
1019afe4b25eSLennert Buytenhek	  Enable support for iWMMXt context switching at run time if
1020afe4b25eSLennert Buytenhek	  running on a CPU that supports it.
1021afe4b25eSLennert Buytenhek
102252108641Seric miaoconfig MULTI_IRQ_HANDLER
102352108641Seric miao	bool
102452108641Seric miao	help
102552108641Seric miao	  Allow each machine to specify it's own IRQ handler at run time.
102652108641Seric miao
10273b93e7b0SHyok S. Choiif !MMU
10283b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
10293b93e7b0SHyok S. Choiendif
10303b93e7b0SHyok S. Choi
10313e0a07f8SGregory CLEMENTconfig PJ4B_ERRATA_4742
10323e0a07f8SGregory CLEMENT	bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
10333e0a07f8SGregory CLEMENT	depends on CPU_PJ4B && MACH_ARMADA_370
10343e0a07f8SGregory CLEMENT	default y
10353e0a07f8SGregory CLEMENT	help
10363e0a07f8SGregory CLEMENT	  When coming out of either a Wait for Interrupt (WFI) or a Wait for
10373e0a07f8SGregory CLEMENT	  Event (WFE) IDLE states, a specific timing sensitivity exists between
10383e0a07f8SGregory CLEMENT	  the retiring WFI/WFE instructions and the newly issued subsequent
10393e0a07f8SGregory CLEMENT	  instructions.  This sensitivity can result in a CPU hang scenario.
10403e0a07f8SGregory CLEMENT	  Workaround:
10413e0a07f8SGregory CLEMENT	  The software must insert either a Data Synchronization Barrier (DSB)
10423e0a07f8SGregory CLEMENT	  or Data Memory Barrier (DMB) command immediately after the WFI/WFE
10433e0a07f8SGregory CLEMENT	  instruction
10443e0a07f8SGregory CLEMENT
1045f0c4b8d6SWill Deaconconfig ARM_ERRATA_326103
1046f0c4b8d6SWill Deacon	bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1047f0c4b8d6SWill Deacon	depends on CPU_V6
1048f0c4b8d6SWill Deacon	help
1049f0c4b8d6SWill Deacon	  Executing a SWP instruction to read-only memory does not set bit 11
1050f0c4b8d6SWill Deacon	  of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1051f0c4b8d6SWill Deacon	  treat the access as a read, preventing a COW from occurring and
1052f0c4b8d6SWill Deacon	  causing the faulting task to livelock.
1053f0c4b8d6SWill Deacon
10549cba3cccSCatalin Marinasconfig ARM_ERRATA_411920
10559cba3cccSCatalin Marinas	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1056e399b1a4SRussell King	depends on CPU_V6 || CPU_V6K
10579cba3cccSCatalin Marinas	help
10589cba3cccSCatalin Marinas	  Invalidation of the Instruction Cache operation can
10599cba3cccSCatalin Marinas	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
10609cba3cccSCatalin Marinas	  It does not affect the MPCore. This option enables the ARM Ltd.
10619cba3cccSCatalin Marinas	  recommended workaround.
10629cba3cccSCatalin Marinas
10637ce236fcSCatalin Marinasconfig ARM_ERRATA_430973
10647ce236fcSCatalin Marinas	bool "ARM errata: Stale prediction on replaced interworking branch"
10657ce236fcSCatalin Marinas	depends on CPU_V7
10667ce236fcSCatalin Marinas	help
10677ce236fcSCatalin Marinas	  This option enables the workaround for the 430973 Cortex-A8
10687ce236fcSCatalin Marinas	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
10697ce236fcSCatalin Marinas	  interworking branch is replaced with another code sequence at the
10707ce236fcSCatalin Marinas	  same virtual address, whether due to self-modifying code or virtual
10717ce236fcSCatalin Marinas	  to physical address re-mapping, Cortex-A8 does not recover from the
10727ce236fcSCatalin Marinas	  stale interworking branch prediction. This results in Cortex-A8
10737ce236fcSCatalin Marinas	  executing the new code sequence in the incorrect ARM or Thumb state.
10747ce236fcSCatalin Marinas	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
10757ce236fcSCatalin Marinas	  and also flushes the branch target cache at every context switch.
10767ce236fcSCatalin Marinas	  Note that setting specific bits in the ACTLR register may not be
10777ce236fcSCatalin Marinas	  available in non-secure mode.
10787ce236fcSCatalin Marinas
1079855c551fSCatalin Marinasconfig ARM_ERRATA_458693
1080855c551fSCatalin Marinas	bool "ARM errata: Processor deadlock when a false hazard is created"
1081855c551fSCatalin Marinas	depends on CPU_V7
108262e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
1083855c551fSCatalin Marinas	help
1084855c551fSCatalin Marinas	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1085855c551fSCatalin Marinas	  erratum. For very specific sequences of memory operations, it is
1086855c551fSCatalin Marinas	  possible for a hazard condition intended for a cache line to instead
1087855c551fSCatalin Marinas	  be incorrectly associated with a different cache line. This false
1088855c551fSCatalin Marinas	  hazard might then cause a processor deadlock. The workaround enables
1089855c551fSCatalin Marinas	  the L1 caching of the NEON accesses and disables the PLD instruction
1090855c551fSCatalin Marinas	  in the ACTLR register. Note that setting specific bits in the ACTLR
1091855c551fSCatalin Marinas	  register may not be available in non-secure mode.
1092855c551fSCatalin Marinas
10930516e464SCatalin Marinasconfig ARM_ERRATA_460075
10940516e464SCatalin Marinas	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
10950516e464SCatalin Marinas	depends on CPU_V7
109662e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
10970516e464SCatalin Marinas	help
10980516e464SCatalin Marinas	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
10990516e464SCatalin Marinas	  erratum. Any asynchronous access to the L2 cache may encounter a
11000516e464SCatalin Marinas	  situation in which recent store transactions to the L2 cache are lost
11010516e464SCatalin Marinas	  and overwritten with stale memory contents from external memory. The
11020516e464SCatalin Marinas	  workaround disables the write-allocate mode for the L2 cache via the
11030516e464SCatalin Marinas	  ACTLR register. Note that setting specific bits in the ACTLR register
11040516e464SCatalin Marinas	  may not be available in non-secure mode.
11050516e464SCatalin Marinas
11069f05027cSWill Deaconconfig ARM_ERRATA_742230
11079f05027cSWill Deacon	bool "ARM errata: DMB operation may be faulty"
11089f05027cSWill Deacon	depends on CPU_V7 && SMP
110962e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
11109f05027cSWill Deacon	help
11119f05027cSWill Deacon	  This option enables the workaround for the 742230 Cortex-A9
11129f05027cSWill Deacon	  (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
11139f05027cSWill Deacon	  between two write operations may not ensure the correct visibility
11149f05027cSWill Deacon	  ordering of the two writes. This workaround sets a specific bit in
11159f05027cSWill Deacon	  the diagnostic register of the Cortex-A9 which causes the DMB
11169f05027cSWill Deacon	  instruction to behave as a DSB, ensuring the correct behaviour of
11179f05027cSWill Deacon	  the two writes.
11189f05027cSWill Deacon
1119a672e99bSWill Deaconconfig ARM_ERRATA_742231
1120a672e99bSWill Deacon	bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1121a672e99bSWill Deacon	depends on CPU_V7 && SMP
112262e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
1123a672e99bSWill Deacon	help
1124a672e99bSWill Deacon	  This option enables the workaround for the 742231 Cortex-A9
1125a672e99bSWill Deacon	  (r2p0..r2p2) erratum. Under certain conditions, specific to the
1126a672e99bSWill Deacon	  Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1127a672e99bSWill Deacon	  accessing some data located in the same cache line, may get corrupted
1128a672e99bSWill Deacon	  data due to bad handling of the address hazard when the line gets
1129a672e99bSWill Deacon	  replaced from one of the CPUs at the same time as another CPU is
1130a672e99bSWill Deacon	  accessing it. This workaround sets specific bits in the diagnostic
1131a672e99bSWill Deacon	  register of the Cortex-A9 which reduces the linefill issuing
1132a672e99bSWill Deacon	  capabilities of the processor.
1133a672e99bSWill Deacon
113469155794SJon Medhurstconfig ARM_ERRATA_643719
113569155794SJon Medhurst	bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
113669155794SJon Medhurst	depends on CPU_V7 && SMP
113769155794SJon Medhurst	help
113869155794SJon Medhurst	  This option enables the workaround for the 643719 Cortex-A9 (prior to
113969155794SJon Medhurst	  r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
114069155794SJon Medhurst	  register returns zero when it should return one. The workaround
114169155794SJon Medhurst	  corrects this value, ensuring cache maintenance operations which use
114269155794SJon Medhurst	  it behave as intended and avoiding data corruption.
114369155794SJon Medhurst
1144cdf357f1SWill Deaconconfig ARM_ERRATA_720789
1145cdf357f1SWill Deacon	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1146e66dc745SDave Martin	depends on CPU_V7
1147cdf357f1SWill Deacon	help
1148cdf357f1SWill Deacon	  This option enables the workaround for the 720789 Cortex-A9 (prior to
1149cdf357f1SWill Deacon	  r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1150cdf357f1SWill Deacon	  broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1151cdf357f1SWill Deacon	  As a consequence of this erratum, some TLB entries which should be
1152cdf357f1SWill Deacon	  invalidated are not, resulting in an incoherency in the system page
1153cdf357f1SWill Deacon	  tables. The workaround changes the TLB flushing routines to invalidate
1154cdf357f1SWill Deacon	  entries regardless of the ASID.
1155475d92fcSWill Deacon
1156475d92fcSWill Deaconconfig ARM_ERRATA_743622
1157475d92fcSWill Deacon	bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1158475d92fcSWill Deacon	depends on CPU_V7
115962e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
1160475d92fcSWill Deacon	help
1161475d92fcSWill Deacon	  This option enables the workaround for the 743622 Cortex-A9
1162efbc74acSWill Deacon	  (r2p*) erratum. Under very rare conditions, a faulty
1163475d92fcSWill Deacon	  optimisation in the Cortex-A9 Store Buffer may lead to data
1164475d92fcSWill Deacon	  corruption. This workaround sets a specific bit in the diagnostic
1165475d92fcSWill Deacon	  register of the Cortex-A9 which disables the Store Buffer
1166475d92fcSWill Deacon	  optimisation, preventing the defect from occurring. This has no
1167475d92fcSWill Deacon	  visible impact on the overall performance or power consumption of the
1168475d92fcSWill Deacon	  processor.
1169475d92fcSWill Deacon
11709a27c27cSWill Deaconconfig ARM_ERRATA_751472
11719a27c27cSWill Deacon	bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1172ba90c516SDave Martin	depends on CPU_V7
117362e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
11749a27c27cSWill Deacon	help
11759a27c27cSWill Deacon	  This option enables the workaround for the 751472 Cortex-A9 (prior
11769a27c27cSWill Deacon	  to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
11779a27c27cSWill Deacon	  completion of a following broadcasted operation if the second
11789a27c27cSWill Deacon	  operation is received by a CPU before the ICIALLUIS has completed,
11799a27c27cSWill Deacon	  potentially leading to corrupted entries in the cache or TLB.
11809a27c27cSWill Deacon
1181fcbdc5feSWill Deaconconfig ARM_ERRATA_754322
1182fcbdc5feSWill Deacon	bool "ARM errata: possible faulty MMU translations following an ASID switch"
1183fcbdc5feSWill Deacon	depends on CPU_V7
1184fcbdc5feSWill Deacon	help
1185fcbdc5feSWill Deacon	  This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1186fcbdc5feSWill Deacon	  r3p*) erratum. A speculative memory access may cause a page table walk
1187fcbdc5feSWill Deacon	  which starts prior to an ASID switch but completes afterwards. This
1188fcbdc5feSWill Deacon	  can populate the micro-TLB with a stale entry which may be hit with
1189fcbdc5feSWill Deacon	  the new ASID. This workaround places two dsb instructions in the mm
1190fcbdc5feSWill Deacon	  switching code so that no page table walks can cross the ASID switch.
1191fcbdc5feSWill Deacon
11925dab26afSWill Deaconconfig ARM_ERRATA_754327
11935dab26afSWill Deacon	bool "ARM errata: no automatic Store Buffer drain"
11945dab26afSWill Deacon	depends on CPU_V7 && SMP
11955dab26afSWill Deacon	help
11965dab26afSWill Deacon	  This option enables the workaround for the 754327 Cortex-A9 (prior to
11975dab26afSWill Deacon	  r2p0) erratum. The Store Buffer does not have any automatic draining
11985dab26afSWill Deacon	  mechanism and therefore a livelock may occur if an external agent
11995dab26afSWill Deacon	  continuously polls a memory location waiting to observe an update.
12005dab26afSWill Deacon	  This workaround defines cpu_relax() as smp_mb(), preventing correctly
12015dab26afSWill Deacon	  written polling loops from denying visibility of updates to memory.
12025dab26afSWill Deacon
1203145e10e1SCatalin Marinasconfig ARM_ERRATA_364296
1204145e10e1SCatalin Marinas	bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1205fd832478SFabio Estevam	depends on CPU_V6
1206145e10e1SCatalin Marinas	help
1207145e10e1SCatalin Marinas	  This options enables the workaround for the 364296 ARM1136
1208145e10e1SCatalin Marinas	  r0p2 erratum (possible cache data corruption with
1209145e10e1SCatalin Marinas	  hit-under-miss enabled). It sets the undocumented bit 31 in
1210145e10e1SCatalin Marinas	  the auxiliary control register and the FI bit in the control
1211145e10e1SCatalin Marinas	  register, thus disabling hit-under-miss without putting the
1212145e10e1SCatalin Marinas	  processor into full low interrupt latency mode. ARM11MPCore
1213145e10e1SCatalin Marinas	  is not affected.
1214145e10e1SCatalin Marinas
1215f630c1bdSWill Deaconconfig ARM_ERRATA_764369
1216f630c1bdSWill Deacon	bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1217f630c1bdSWill Deacon	depends on CPU_V7 && SMP
1218f630c1bdSWill Deacon	help
1219f630c1bdSWill Deacon	  This option enables the workaround for erratum 764369
1220f630c1bdSWill Deacon	  affecting Cortex-A9 MPCore with two or more processors (all
1221f630c1bdSWill Deacon	  current revisions). Under certain timing circumstances, a data
1222f630c1bdSWill Deacon	  cache line maintenance operation by MVA targeting an Inner
1223f630c1bdSWill Deacon	  Shareable memory region may fail to proceed up to either the
1224f630c1bdSWill Deacon	  Point of Coherency or to the Point of Unification of the
1225f630c1bdSWill Deacon	  system. This workaround adds a DSB instruction before the
1226f630c1bdSWill Deacon	  relevant cache maintenance functions and sets a specific bit
1227f630c1bdSWill Deacon	  in the diagnostic control register of the SCU.
1228f630c1bdSWill Deacon
12297253b85cSSimon Hormanconfig ARM_ERRATA_775420
12307253b85cSSimon Horman       bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
12317253b85cSSimon Horman       depends on CPU_V7
12327253b85cSSimon Horman       help
12337253b85cSSimon Horman	 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
12347253b85cSSimon Horman	 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
12357253b85cSSimon Horman	 operation aborts with MMU exception, it might cause the processor
12367253b85cSSimon Horman	 to deadlock. This workaround puts DSB before executing ISB if
12377253b85cSSimon Horman	 an abort may occur on cache maintenance.
12387253b85cSSimon Horman
123993dc6887SCatalin Marinasconfig ARM_ERRATA_798181
124093dc6887SCatalin Marinas	bool "ARM errata: TLBI/DSB failure on Cortex-A15"
124193dc6887SCatalin Marinas	depends on CPU_V7 && SMP
124293dc6887SCatalin Marinas	help
124393dc6887SCatalin Marinas	  On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
124493dc6887SCatalin Marinas	  adequately shooting down all use of the old entries. This
124593dc6887SCatalin Marinas	  option enables the Linux kernel workaround for this erratum
124693dc6887SCatalin Marinas	  which sends an IPI to the CPUs that are running the same ASID
124793dc6887SCatalin Marinas	  as the one being invalidated.
124893dc6887SCatalin Marinas
124984b6504fSWill Deaconconfig ARM_ERRATA_773022
125084b6504fSWill Deacon	bool "ARM errata: incorrect instructions may be executed from loop buffer"
125184b6504fSWill Deacon	depends on CPU_V7
125284b6504fSWill Deacon	help
125384b6504fSWill Deacon	  This option enables the workaround for the 773022 Cortex-A15
125484b6504fSWill Deacon	  (up to r0p4) erratum. In certain rare sequences of code, the
125584b6504fSWill Deacon	  loop buffer may deliver incorrect instructions. This
125684b6504fSWill Deacon	  workaround disables the loop buffer to avoid the erratum.
125784b6504fSWill Deacon
12581da177e4SLinus Torvaldsendmenu
12591da177e4SLinus Torvalds
12601da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
12611da177e4SLinus Torvalds
12621da177e4SLinus Torvaldsmenu "Bus support"
12631da177e4SLinus Torvalds
12641da177e4SLinus Torvaldsconfig ARM_AMBA
12651da177e4SLinus Torvalds	bool
12661da177e4SLinus Torvalds
12671da177e4SLinus Torvaldsconfig ISA
12681da177e4SLinus Torvalds	bool
12691da177e4SLinus Torvalds	help
12701da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
12711da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
12721da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
12731da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
12741da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
12751da177e4SLinus Torvalds
1276065909b9SRussell King# Select ISA DMA controller support
12771da177e4SLinus Torvaldsconfig ISA_DMA
12781da177e4SLinus Torvalds	bool
1279065909b9SRussell King	select ISA_DMA_API
12801da177e4SLinus Torvalds
1281065909b9SRussell King# Select ISA DMA interface
12825cae841bSAl Viroconfig ISA_DMA_API
12835cae841bSAl Viro	bool
12845cae841bSAl Viro
12851da177e4SLinus Torvaldsconfig PCI
12860b05da72SHans Ulli Kroll	bool "PCI support" if MIGHT_HAVE_PCI
12871da177e4SLinus Torvalds	help
12881da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
12891da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
12901da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
12911da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
12921da177e4SLinus Torvalds
129352882173SAnton Vorontsovconfig PCI_DOMAINS
129452882173SAnton Vorontsov	bool
129552882173SAnton Vorontsov	depends on PCI
129652882173SAnton Vorontsov
1297b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE
1298b080ac8aSMarcelo Roberto Jimenez	bool "BSE nanoEngine PCI support"
1299b080ac8aSMarcelo Roberto Jimenez	depends on SA1100_NANOENGINE
1300b080ac8aSMarcelo Roberto Jimenez	help
1301b080ac8aSMarcelo Roberto Jimenez	  Enable PCI on the BSE nanoEngine board.
1302b080ac8aSMarcelo Roberto Jimenez
130336e23590SMatthew Wilcoxconfig PCI_SYSCALL
130436e23590SMatthew Wilcox	def_bool PCI
130536e23590SMatthew Wilcox
1306a0113a99SMike Rapoportconfig PCI_HOST_ITE8152
1307a0113a99SMike Rapoport	bool
1308a0113a99SMike Rapoport	depends on PCI && MACH_ARMCORE
1309a0113a99SMike Rapoport	default y
1310a0113a99SMike Rapoport	select DMABOUNCE
1311a0113a99SMike Rapoport
13121da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
13133f06d157SJingoo Hansource "drivers/pci/pcie/Kconfig"
13141da177e4SLinus Torvalds
13151da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
13161da177e4SLinus Torvalds
13171da177e4SLinus Torvaldsendmenu
13181da177e4SLinus Torvalds
13191da177e4SLinus Torvaldsmenu "Kernel Features"
13201da177e4SLinus Torvalds
13213b55658aSDave Martinconfig HAVE_SMP
13223b55658aSDave Martin	bool
13233b55658aSDave Martin	help
13243b55658aSDave Martin	  This option should be selected by machines which have an SMP-
13253b55658aSDave Martin	  capable CPU.
13263b55658aSDave Martin
13273b55658aSDave Martin	  The only effect of this option is to make the SMP-related
13283b55658aSDave Martin	  options available to the user for configuration.
13293b55658aSDave Martin
13301da177e4SLinus Torvaldsconfig SMP
1331bb2d8130SRussell King	bool "Symmetric Multi-Processing"
1332fbb4ddacSRussell King	depends on CPU_V6K || CPU_V7
1333bc28248eSRussell King	depends on GENERIC_CLOCKEVENTS
13343b55658aSDave Martin	depends on HAVE_SMP
1335801bb21cSJonathan Austin	depends on MMU || ARM_MPU
13361da177e4SLinus Torvalds	help
13371da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
13384a474157SRobert Graffham	  a system with only one CPU, say N. If you have a system with more
13394a474157SRobert Graffham	  than one CPU, say Y.
13401da177e4SLinus Torvalds
13414a474157SRobert Graffham	  If you say N here, the kernel will run on uni- and multiprocessor
13421da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
13434a474157SRobert Graffham	  you say Y here, the kernel will run on many, but not all,
13444a474157SRobert Graffham	  uniprocessor machines. On a uniprocessor machine, the kernel
13454a474157SRobert Graffham	  will run faster if you say N here.
13461da177e4SLinus Torvalds
1347395cf969SPaul Bolle	  See also <file:Documentation/x86/i386/IO-APIC.txt>,
13481da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
134950a23e6eSJustin P. Mattock	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
13501da177e4SLinus Torvalds
13511da177e4SLinus Torvalds	  If you don't know what to do here, say N.
13521da177e4SLinus Torvalds
1353f00ec48fSRussell Kingconfig SMP_ON_UP
1354f00ec48fSRussell King	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1355801bb21cSJonathan Austin	depends on SMP && !XIP_KERNEL && MMU
1356f00ec48fSRussell King	default y
1357f00ec48fSRussell King	help
1358f00ec48fSRussell King	  SMP kernels contain instructions which fail on non-SMP processors.
1359f00ec48fSRussell King	  Enabling this option allows the kernel to modify itself to make
1360f00ec48fSRussell King	  these instructions safe.  Disabling it allows about 1K of space
1361f00ec48fSRussell King	  savings.
1362f00ec48fSRussell King
1363f00ec48fSRussell King	  If you don't know what to do here, say Y.
1364f00ec48fSRussell King
1365c9018aabSVincent Guittotconfig ARM_CPU_TOPOLOGY
1366c9018aabSVincent Guittot	bool "Support cpu topology definition"
1367c9018aabSVincent Guittot	depends on SMP && CPU_V7
1368c9018aabSVincent Guittot	default y
1369c9018aabSVincent Guittot	help
1370c9018aabSVincent Guittot	  Support ARM cpu topology definition. The MPIDR register defines
1371c9018aabSVincent Guittot	  affinity between processors which is then used to describe the cpu
1372c9018aabSVincent Guittot	  topology of an ARM System.
1373c9018aabSVincent Guittot
1374c9018aabSVincent Guittotconfig SCHED_MC
1375c9018aabSVincent Guittot	bool "Multi-core scheduler support"
1376c9018aabSVincent Guittot	depends on ARM_CPU_TOPOLOGY
1377c9018aabSVincent Guittot	help
1378c9018aabSVincent Guittot	  Multi-core scheduler support improves the CPU scheduler's decision
1379c9018aabSVincent Guittot	  making when dealing with multi-core CPU chips at a cost of slightly
1380c9018aabSVincent Guittot	  increased overhead in some places. If unsure say N here.
1381c9018aabSVincent Guittot
1382c9018aabSVincent Guittotconfig SCHED_SMT
1383c9018aabSVincent Guittot	bool "SMT scheduler support"
1384c9018aabSVincent Guittot	depends on ARM_CPU_TOPOLOGY
1385c9018aabSVincent Guittot	help
1386c9018aabSVincent Guittot	  Improves the CPU scheduler's decision making when dealing with
1387c9018aabSVincent Guittot	  MultiThreading at a cost of slightly increased overhead in some
1388c9018aabSVincent Guittot	  places. If unsure say N here.
1389c9018aabSVincent Guittot
1390a8cbcd92SRussell Kingconfig HAVE_ARM_SCU
1391a8cbcd92SRussell King	bool
1392a8cbcd92SRussell King	help
1393a8cbcd92SRussell King	  This option enables support for the ARM system coherency unit
1394a8cbcd92SRussell King
13958a4da6e3SMark Rutlandconfig HAVE_ARM_ARCH_TIMER
1396022c03a2SMarc Zyngier	bool "Architected timer support"
1397022c03a2SMarc Zyngier	depends on CPU_V7
13988a4da6e3SMark Rutland	select ARM_ARCH_TIMER
13990c403462SWill Deacon	select GENERIC_CLOCKEVENTS
1400022c03a2SMarc Zyngier	help
1401022c03a2SMarc Zyngier	  This option enables support for the ARM architected timer
1402022c03a2SMarc Zyngier
1403f32f4ce2SRussell Kingconfig HAVE_ARM_TWD
1404f32f4ce2SRussell King	bool
1405f32f4ce2SRussell King	depends on SMP
1406da4a686aSRob Herring	select CLKSRC_OF if OF
1407f32f4ce2SRussell King	help
1408f32f4ce2SRussell King	  This options enables support for the ARM timer and watchdog unit
1409f32f4ce2SRussell King
1410e8db288eSNicolas Pitreconfig MCPM
1411e8db288eSNicolas Pitre	bool "Multi-Cluster Power Management"
1412e8db288eSNicolas Pitre	depends on CPU_V7 && SMP
1413e8db288eSNicolas Pitre	help
1414e8db288eSNicolas Pitre	  This option provides the common power management infrastructure
1415e8db288eSNicolas Pitre	  for (multi-)cluster based systems, such as big.LITTLE based
1416e8db288eSNicolas Pitre	  systems.
1417e8db288eSNicolas Pitre
14181c33be57SNicolas Pitreconfig BIG_LITTLE
14191c33be57SNicolas Pitre	bool "big.LITTLE support (Experimental)"
14201c33be57SNicolas Pitre	depends on CPU_V7 && SMP
14211c33be57SNicolas Pitre	select MCPM
14221c33be57SNicolas Pitre	help
14231c33be57SNicolas Pitre	  This option enables support selections for the big.LITTLE
14241c33be57SNicolas Pitre	  system architecture.
14251c33be57SNicolas Pitre
14261c33be57SNicolas Pitreconfig BL_SWITCHER
14271c33be57SNicolas Pitre	bool "big.LITTLE switcher support"
14281c33be57SNicolas Pitre	depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
14291c33be57SNicolas Pitre	select ARM_CPU_SUSPEND
143051aaf81fSRussell King	select CPU_PM
14311c33be57SNicolas Pitre	help
14321c33be57SNicolas Pitre	  The big.LITTLE "switcher" provides the core functionality to
14331c33be57SNicolas Pitre	  transparently handle transition between a cluster of A15's
14341c33be57SNicolas Pitre	  and a cluster of A7's in a big.LITTLE system.
14351c33be57SNicolas Pitre
1436b22537c6SNicolas Pitreconfig BL_SWITCHER_DUMMY_IF
1437b22537c6SNicolas Pitre	tristate "Simple big.LITTLE switcher user interface"
1438b22537c6SNicolas Pitre	depends on BL_SWITCHER && DEBUG_KERNEL
1439b22537c6SNicolas Pitre	help
1440b22537c6SNicolas Pitre	  This is a simple and dummy char dev interface to control
1441b22537c6SNicolas Pitre	  the big.LITTLE switcher core code.  It is meant for
1442b22537c6SNicolas Pitre	  debugging purposes only.
1443b22537c6SNicolas Pitre
14448d5796d2SLennert Buytenhekchoice
14458d5796d2SLennert Buytenhek	prompt "Memory split"
1446006fa259SRussell King	depends on MMU
14478d5796d2SLennert Buytenhek	default VMSPLIT_3G
14488d5796d2SLennert Buytenhek	help
14498d5796d2SLennert Buytenhek	  Select the desired split between kernel and user memory.
14508d5796d2SLennert Buytenhek
14518d5796d2SLennert Buytenhek	  If you are not absolutely sure what you are doing, leave this
14528d5796d2SLennert Buytenhek	  option alone!
14538d5796d2SLennert Buytenhek
14548d5796d2SLennert Buytenhek	config VMSPLIT_3G
14558d5796d2SLennert Buytenhek		bool "3G/1G user/kernel split"
14568d5796d2SLennert Buytenhek	config VMSPLIT_2G
14578d5796d2SLennert Buytenhek		bool "2G/2G user/kernel split"
14588d5796d2SLennert Buytenhek	config VMSPLIT_1G
14598d5796d2SLennert Buytenhek		bool "1G/3G user/kernel split"
14608d5796d2SLennert Buytenhekendchoice
14618d5796d2SLennert Buytenhek
14628d5796d2SLennert Buytenhekconfig PAGE_OFFSET
14638d5796d2SLennert Buytenhek	hex
1464006fa259SRussell King	default PHYS_OFFSET if !MMU
14658d5796d2SLennert Buytenhek	default 0x40000000 if VMSPLIT_1G
14668d5796d2SLennert Buytenhek	default 0x80000000 if VMSPLIT_2G
14678d5796d2SLennert Buytenhek	default 0xC0000000
14688d5796d2SLennert Buytenhek
14691da177e4SLinus Torvaldsconfig NR_CPUS
14701da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
14711da177e4SLinus Torvalds	range 2 32
14721da177e4SLinus Torvalds	depends on SMP
14731da177e4SLinus Torvalds	default "4"
14741da177e4SLinus Torvalds
1475a054a811SRussell Kingconfig HOTPLUG_CPU
147600b7dedeSRussell King	bool "Support for hot-pluggable CPUs"
147740b31360SStephen Rothwell	depends on SMP
1478a054a811SRussell King	help
1479a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
1480a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
1481a054a811SRussell King
14822bdd424fSWill Deaconconfig ARM_PSCI
14832bdd424fSWill Deacon	bool "Support for the ARM Power State Coordination Interface (PSCI)"
14842bdd424fSWill Deacon	depends on CPU_V7
14852bdd424fSWill Deacon	help
14862bdd424fSWill Deacon	  Say Y here if you want Linux to communicate with system firmware
14872bdd424fSWill Deacon	  implementing the PSCI specification for CPU-centric power
14882bdd424fSWill Deacon	  management operations described in ARM document number ARM DEN
14892bdd424fSWill Deacon	  0022A ("Power State Coordination Interface System Software on
14902bdd424fSWill Deacon	  ARM processors").
14912bdd424fSWill Deacon
14922a6ad871SMaxime Ripard# The GPIO number here must be sorted by descending number. In case of
14932a6ad871SMaxime Ripard# a multiplatform kernel, we just want the highest value required by the
14942a6ad871SMaxime Ripard# selected platforms.
149544986ab0SPeter De Schrijver (NVIDIA)config ARCH_NR_GPIO
149644986ab0SPeter De Schrijver (NVIDIA)	int
14973dea19e8SPeter De Schrijver (NVIDIA)	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
1498*aa42587aSTomasz Figa	default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1499*aa42587aSTomasz Figa		SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
1500eb171a99SBoris BREZILLON	default 416 if ARCH_SUNXI
150106b851e5SOlof Johansson	default 392 if ARCH_U8500
150201bb914cSTony Prisk	default 352 if ARCH_VT8500
15032a6ad871SMaxime Ripard	default 264 if MACH_H4700
150444986ab0SPeter De Schrijver (NVIDIA)	default 0
150544986ab0SPeter De Schrijver (NVIDIA)	help
150644986ab0SPeter De Schrijver (NVIDIA)	  Maximum number of GPIOs in the system.
150744986ab0SPeter De Schrijver (NVIDIA)
150844986ab0SPeter De Schrijver (NVIDIA)	  If unsure, leave the default value.
150944986ab0SPeter De Schrijver (NVIDIA)
1510d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt
15111da177e4SLinus Torvalds
1512c9218b16SRussell Kingconfig HZ_FIXED
1513f8065813SRussell King	int
1514070b8b43SKukjin Kim	default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
1515a73ddc61SKukjin Kim		ARCH_S5PV210 || ARCH_EXYNOS4
15165248c657SDavid Brownell	default AT91_TIMER_HZ if ARCH_AT91
1517bf98c1eaSLaurent Pinchart	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
151847d84682SRussell King	default 0
1519c9218b16SRussell King
1520c9218b16SRussell Kingchoice
152147d84682SRussell King	depends on HZ_FIXED = 0
1522c9218b16SRussell King	prompt "Timer frequency"
1523c9218b16SRussell King
1524c9218b16SRussell Kingconfig HZ_100
1525c9218b16SRussell King	bool "100 Hz"
1526c9218b16SRussell King
1527c9218b16SRussell Kingconfig HZ_200
1528c9218b16SRussell King	bool "200 Hz"
1529c9218b16SRussell King
1530c9218b16SRussell Kingconfig HZ_250
1531c9218b16SRussell King	bool "250 Hz"
1532c9218b16SRussell King
1533c9218b16SRussell Kingconfig HZ_300
1534c9218b16SRussell King	bool "300 Hz"
1535c9218b16SRussell King
1536c9218b16SRussell Kingconfig HZ_500
1537c9218b16SRussell King	bool "500 Hz"
1538c9218b16SRussell King
1539c9218b16SRussell Kingconfig HZ_1000
1540c9218b16SRussell King	bool "1000 Hz"
1541c9218b16SRussell King
1542c9218b16SRussell Kingendchoice
1543c9218b16SRussell King
1544c9218b16SRussell Kingconfig HZ
1545c9218b16SRussell King	int
154647d84682SRussell King	default HZ_FIXED if HZ_FIXED != 0
1547c9218b16SRussell King	default 100 if HZ_100
1548c9218b16SRussell King	default 200 if HZ_200
1549c9218b16SRussell King	default 250 if HZ_250
1550c9218b16SRussell King	default 300 if HZ_300
1551c9218b16SRussell King	default 500 if HZ_500
1552c9218b16SRussell King	default 1000
1553c9218b16SRussell King
1554c9218b16SRussell Kingconfig SCHED_HRTICK
1555c9218b16SRussell King	def_bool HIGH_RES_TIMERS
1556f8065813SRussell King
155716c79651SCatalin Marinasconfig THUMB2_KERNEL
1558bc7dea00SUwe Kleine-König	bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
15594477ca45SUwe Kleine-König	depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
1560bc7dea00SUwe Kleine-König	default y if CPU_THUMBONLY
156116c79651SCatalin Marinas	select AEABI
156216c79651SCatalin Marinas	select ARM_ASM_UNIFIED
156389bace65SArnd Bergmann	select ARM_UNWIND
156416c79651SCatalin Marinas	help
156516c79651SCatalin Marinas	  By enabling this option, the kernel will be compiled in
156616c79651SCatalin Marinas	  Thumb-2 mode. A compiler/assembler that understand the unified
156716c79651SCatalin Marinas	  ARM-Thumb syntax is needed.
156816c79651SCatalin Marinas
156916c79651SCatalin Marinas	  If unsure, say N.
157016c79651SCatalin Marinas
15716f685c5cSDave Martinconfig THUMB2_AVOID_R_ARM_THM_JUMP11
15726f685c5cSDave Martin	bool "Work around buggy Thumb-2 short branch relocations in gas"
15736f685c5cSDave Martin	depends on THUMB2_KERNEL && MODULES
15746f685c5cSDave Martin	default y
15756f685c5cSDave Martin	help
15766f685c5cSDave Martin	  Various binutils versions can resolve Thumb-2 branches to
15776f685c5cSDave Martin	  locally-defined, preemptible global symbols as short-range "b.n"
15786f685c5cSDave Martin	  branch instructions.
15796f685c5cSDave Martin
15806f685c5cSDave Martin	  This is a problem, because there's no guarantee the final
15816f685c5cSDave Martin	  destination of the symbol, or any candidate locations for a
15826f685c5cSDave Martin	  trampoline, are within range of the branch.  For this reason, the
15836f685c5cSDave Martin	  kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
15846f685c5cSDave Martin	  relocation in modules at all, and it makes little sense to add
15856f685c5cSDave Martin	  support.
15866f685c5cSDave Martin
15876f685c5cSDave Martin	  The symptom is that the kernel fails with an "unsupported
15886f685c5cSDave Martin	  relocation" error when loading some modules.
15896f685c5cSDave Martin
15906f685c5cSDave Martin	  Until fixed tools are available, passing
15916f685c5cSDave Martin	  -fno-optimize-sibling-calls to gcc should prevent gcc generating
15926f685c5cSDave Martin	  code which hits this problem, at the cost of a bit of extra runtime
15936f685c5cSDave Martin	  stack usage in some cases.
15946f685c5cSDave Martin
15956f685c5cSDave Martin	  The problem is described in more detail at:
15966f685c5cSDave Martin	      https://bugs.launchpad.net/binutils-linaro/+bug/725126
15976f685c5cSDave Martin
15986f685c5cSDave Martin	  Only Thumb-2 kernels are affected.
15996f685c5cSDave Martin
16006f685c5cSDave Martin	  Unless you are sure your tools don't have this problem, say Y.
16016f685c5cSDave Martin
16020becb088SCatalin Marinasconfig ARM_ASM_UNIFIED
16030becb088SCatalin Marinas	bool
16040becb088SCatalin Marinas
1605704bdda0SNicolas Pitreconfig AEABI
1606704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
1607704bdda0SNicolas Pitre	help
1608704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
1609704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
1610704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
1611704bdda0SNicolas Pitre
1612704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
1613704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
1614704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
1615704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
1616704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
1617704bdda0SNicolas Pitre
1618704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
1619704bdda0SNicolas Pitre
16206c90c872SNicolas Pitreconfig OABI_COMPAT
1621a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1622d6f94fa0SKees Cook	depends on AEABI && !THUMB2_KERNEL
16236c90c872SNicolas Pitre	help
16246c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
16256c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
16266c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
16276c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
16286c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
16296c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
163091702175SKees Cook
163191702175SKees Cook	  The seccomp filter system will not be available when this is
163291702175SKees Cook	  selected, since there is no way yet to sensibly distinguish
163391702175SKees Cook	  between calling conventions during filtering.
163491702175SKees Cook
16356c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
16366c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
16376c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
16386c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
1639b02f8467SKees Cook	  at all). If in doubt say N.
16406c90c872SNicolas Pitre
1641eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL
1642e80d6a24SMel Gorman	bool
1643e80d6a24SMel Gorman
164405944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE
164505944d74SRussell King	bool
164605944d74SRussell King
164707a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT
164807a2f737SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
164907a2f737SRussell King
165005944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL
1651be370302SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
1652c80d79d7SYasunori Goto
16537b7bf499SWill Deaconconfig HAVE_ARCH_PFN_VALID
16547b7bf499SWill Deacon	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
16557b7bf499SWill Deacon
1656053a96caSNicolas Pitreconfig HIGHMEM
1657e8db89a2SRussell King	bool "High Memory Support"
1658e8db89a2SRussell King	depends on MMU
1659053a96caSNicolas Pitre	help
1660053a96caSNicolas Pitre	  The address space of ARM processors is only 4 Gigabytes large
1661053a96caSNicolas Pitre	  and it has to accommodate user address space, kernel address
1662053a96caSNicolas Pitre	  space as well as some memory mapped IO. That means that, if you
1663053a96caSNicolas Pitre	  have a large amount of physical memory and/or IO, not all of the
1664053a96caSNicolas Pitre	  memory can be "permanently mapped" by the kernel. The physical
1665053a96caSNicolas Pitre	  memory that is not permanently mapped is called "high memory".
1666053a96caSNicolas Pitre
1667053a96caSNicolas Pitre	  Depending on the selected kernel/user memory split, minimum
1668053a96caSNicolas Pitre	  vmalloc space and actual amount of RAM, you may not need this
1669053a96caSNicolas Pitre	  option which should result in a slightly faster kernel.
1670053a96caSNicolas Pitre
1671053a96caSNicolas Pitre	  If unsure, say n.
1672053a96caSNicolas Pitre
167365cec8e3SRussell Kingconfig HIGHPTE
167465cec8e3SRussell King	bool "Allocate 2nd-level pagetables from highmem"
167565cec8e3SRussell King	depends on HIGHMEM
167665cec8e3SRussell King
16771b8873a0SJamie Ilesconfig HW_PERF_EVENTS
16781b8873a0SJamie Iles	bool "Enable hardware performance counter support for perf events"
1679f0d1bc47SWill Deacon	depends on PERF_EVENTS
16801b8873a0SJamie Iles	default y
16811b8873a0SJamie Iles	help
16821b8873a0SJamie Iles	  Enable hardware performance counter support for perf events. If
16831b8873a0SJamie Iles	  disabled, perf events will use software events only.
16841b8873a0SJamie Iles
16851355e2a6SCatalin Marinasconfig SYS_SUPPORTS_HUGETLBFS
16861355e2a6SCatalin Marinas       def_bool y
16871355e2a6SCatalin Marinas       depends on ARM_LPAE
16881355e2a6SCatalin Marinas
16898d962507SCatalin Marinasconfig HAVE_ARCH_TRANSPARENT_HUGEPAGE
16908d962507SCatalin Marinas       def_bool y
16918d962507SCatalin Marinas       depends on ARM_LPAE
16928d962507SCatalin Marinas
16934bfab203SSteven Capperconfig ARCH_WANT_GENERAL_HUGETLB
16944bfab203SSteven Capper	def_bool y
16954bfab203SSteven Capper
16963f22ab27SDave Hansensource "mm/Kconfig"
16973f22ab27SDave Hansen
1698c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER
1699bf98c1eaSLaurent Pinchart	int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1700bf98c1eaSLaurent Pinchart	range 11 64 if ARCH_SHMOBILE_LEGACY
1701898f08e1SYegor Yefremov	default "12" if SOC_AM33XX
17026d85e2b0SUwe Kleine-König	default "9" if SA1111 || ARCH_EFM32
1703c1b2d970SMagnus Damm	default "11"
1704c1b2d970SMagnus Damm	help
1705c1b2d970SMagnus Damm	  The kernel memory allocator divides physically contiguous memory
1706c1b2d970SMagnus Damm	  blocks into "zones", where each zone is a power of two number of
1707c1b2d970SMagnus Damm	  pages.  This option selects the largest power of two that the kernel
1708c1b2d970SMagnus Damm	  keeps in the memory allocator.  If you need to allocate very large
1709c1b2d970SMagnus Damm	  blocks of physically contiguous memory, then you may need to
1710c1b2d970SMagnus Damm	  increase this value.
1711c1b2d970SMagnus Damm
1712c1b2d970SMagnus Damm	  This config option is actually maximum order plus one. For example,
1713c1b2d970SMagnus Damm	  a value of 11 means that the largest free memory block is 2^10 pages.
1714c1b2d970SMagnus Damm
17151da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
17161da177e4SLinus Torvalds	bool
1717f12d0d7cSHyok S. Choi	depends on CPU_CP15_MMU
17181da177e4SLinus Torvalds	default y if !ARCH_EBSA110
1719e119bfffSRussell King	select HAVE_PROC_CPU if PROC_FS
17201da177e4SLinus Torvalds	help
17211da177e4SLinus Torvalds	  ARM processors cannot fetch/store information which is not
17221da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
17231da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
17241da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
17251da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
17261da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
17271da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
17281da177e4SLinus Torvalds
172939ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY
173038ef2ad5SLinus Walleij	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
173138ef2ad5SLinus Walleij	depends on MMU
173239ec58f3SLennert Buytenhek	default y if CPU_FEROCEON
173339ec58f3SLennert Buytenhek	help
173439ec58f3SLennert Buytenhek	  Implement faster copy_to_user and clear_user methods for CPU
173539ec58f3SLennert Buytenhek	  cores where a 8-word STM instruction give significantly higher
173639ec58f3SLennert Buytenhek	  memory write throughput than a sequence of individual 32bit stores.
173739ec58f3SLennert Buytenhek
173839ec58f3SLennert Buytenhek	  A possible side effect is a slight increase in scheduling latency
173939ec58f3SLennert Buytenhek	  between threads sharing the same address space if they invoke
174039ec58f3SLennert Buytenhek	  such copy operations with large buffers.
174139ec58f3SLennert Buytenhek
174239ec58f3SLennert Buytenhek	  However, if the CPU data cache is using a write-allocate mode,
174339ec58f3SLennert Buytenhek	  this option is unlikely to provide any performance gain.
174439ec58f3SLennert Buytenhek
174570c70d97SNicolas Pitreconfig SECCOMP
174670c70d97SNicolas Pitre	bool
174770c70d97SNicolas Pitre	prompt "Enable seccomp to safely compute untrusted bytecode"
174870c70d97SNicolas Pitre	---help---
174970c70d97SNicolas Pitre	  This kernel feature is useful for number crunching applications
175070c70d97SNicolas Pitre	  that may need to compute untrusted bytecode during their
175170c70d97SNicolas Pitre	  execution. By using pipes or other transports made available to
175270c70d97SNicolas Pitre	  the process as file descriptors supporting the read/write
175370c70d97SNicolas Pitre	  syscalls, it's possible to isolate those applications in
175470c70d97SNicolas Pitre	  their own address space using seccomp. Once seccomp is
175570c70d97SNicolas Pitre	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
175670c70d97SNicolas Pitre	  and the task is only allowed to execute a few safe syscalls
175770c70d97SNicolas Pitre	  defined by each seccomp mode.
175870c70d97SNicolas Pitre
175906e6295bSStefano Stabelliniconfig SWIOTLB
176006e6295bSStefano Stabellini	def_bool y
176106e6295bSStefano Stabellini
176206e6295bSStefano Stabelliniconfig IOMMU_HELPER
176306e6295bSStefano Stabellini	def_bool SWIOTLB
176406e6295bSStefano Stabellini
1765eff8d644SStefano Stabelliniconfig XEN_DOM0
1766eff8d644SStefano Stabellini	def_bool y
1767eff8d644SStefano Stabellini	depends on XEN
1768eff8d644SStefano Stabellini
1769eff8d644SStefano Stabelliniconfig XEN
1770eff8d644SStefano Stabellini	bool "Xen guest support on ARM (EXPERIMENTAL)"
177185323a99SIan Campbell	depends on ARM && AEABI && OF
1772f880b67dSArnd Bergmann	depends on CPU_V7 && !CPU_V6
177385323a99SIan Campbell	depends on !GENERIC_ATOMIC64
17747693deccSUwe Kleine-König	depends on MMU
177551aaf81fSRussell King	select ARCH_DMA_ADDR_T_64BIT
177617b7ab80SStefano Stabellini	select ARM_PSCI
177783862ccfSStefano Stabellini	select SWIOTLB_XEN
1778eff8d644SStefano Stabellini	help
1779eff8d644SStefano Stabellini	  Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1780eff8d644SStefano Stabellini
17811da177e4SLinus Torvaldsendmenu
17821da177e4SLinus Torvalds
17831da177e4SLinus Torvaldsmenu "Boot options"
17841da177e4SLinus Torvalds
17859eb8f674SGrant Likelyconfig USE_OF
17869eb8f674SGrant Likely	bool "Flattened Device Tree support"
1787b1b3f49cSRussell King	select IRQ_DOMAIN
17889eb8f674SGrant Likely	select OF
17899eb8f674SGrant Likely	select OF_EARLY_FLATTREE
1790bcedb5f9SMarek Szyprowski	select OF_RESERVED_MEM
17919eb8f674SGrant Likely	help
17929eb8f674SGrant Likely	  Include support for flattened device tree machine descriptions.
17939eb8f674SGrant Likely
1794bd51e2f5SNicolas Pitreconfig ATAGS
1795bd51e2f5SNicolas Pitre	bool "Support for the traditional ATAGS boot data passing" if USE_OF
1796bd51e2f5SNicolas Pitre	default y
1797bd51e2f5SNicolas Pitre	help
1798bd51e2f5SNicolas Pitre	  This is the traditional way of passing data to the kernel at boot
1799bd51e2f5SNicolas Pitre	  time. If you are solely relying on the flattened device tree (or
1800bd51e2f5SNicolas Pitre	  the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1801bd51e2f5SNicolas Pitre	  to remove ATAGS support from your kernel binary.  If unsure,
1802bd51e2f5SNicolas Pitre	  leave this to y.
1803bd51e2f5SNicolas Pitre
1804bd51e2f5SNicolas Pitreconfig DEPRECATED_PARAM_STRUCT
1805bd51e2f5SNicolas Pitre	bool "Provide old way to pass kernel parameters"
1806bd51e2f5SNicolas Pitre	depends on ATAGS
1807bd51e2f5SNicolas Pitre	help
1808bd51e2f5SNicolas Pitre	  This was deprecated in 2001 and announced to live on for 5 years.
1809bd51e2f5SNicolas Pitre	  Some old boot loaders still use this way.
1810bd51e2f5SNicolas Pitre
18111da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
18121da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
18131da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
18141da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
18151da177e4SLinus Torvalds	default "0"
18161da177e4SLinus Torvalds	help
18171da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
18181da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
18191da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
18201da177e4SLinus Torvalds	  value in their defconfig file.
18211da177e4SLinus Torvalds
18221da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
18231da177e4SLinus Torvalds
18241da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
18251da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
18261da177e4SLinus Torvalds	default "0"
18271da177e4SLinus Torvalds	help
1828f8c440b2SDan Fandrich	  The base address of an area of read/write memory in the target
1829f8c440b2SDan Fandrich	  for the ROM-able zImage which must be available while the
1830f8c440b2SDan Fandrich	  decompressor is running. It must be large enough to hold the
1831f8c440b2SDan Fandrich	  entire decompressed kernel plus an additional 128 KiB.
1832f8c440b2SDan Fandrich	  Platforms which normally make use of ROM-able zImage formats
1833f8c440b2SDan Fandrich	  normally set this to a suitable value in their defconfig file.
18341da177e4SLinus Torvalds
18351da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
18361da177e4SLinus Torvalds
18371da177e4SLinus Torvaldsconfig ZBOOT_ROM
18381da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
18391da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
184010968131SRussell King	depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
18411da177e4SLinus Torvalds	help
18421da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
18431da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
18441da177e4SLinus Torvalds
1845090ab3ffSSimon Hormanchoice
1846090ab3ffSSimon Horman	prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1847d6f94fa0SKees Cook	depends on ZBOOT_ROM && ARCH_SH7372
1848090ab3ffSSimon Horman	default ZBOOT_ROM_NONE
1849090ab3ffSSimon Horman	help
1850090ab3ffSSimon Horman	  Include experimental SD/MMC loading code in the ROM-able zImage.
185159bf8964SMasanari Iida	  With this enabled it is possible to write the ROM-able zImage
1852090ab3ffSSimon Horman	  kernel image to an MMC or SD card and boot the kernel straight
1853090ab3ffSSimon Horman	  from the reset vector. At reset the processor Mask ROM will load
185459bf8964SMasanari Iida	  the first part of the ROM-able zImage which in turn loads the
1855090ab3ffSSimon Horman	  rest the kernel image to RAM.
1856090ab3ffSSimon Horman
1857090ab3ffSSimon Hormanconfig ZBOOT_ROM_NONE
1858090ab3ffSSimon Horman	bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1859090ab3ffSSimon Horman	help
1860090ab3ffSSimon Horman	  Do not load image from SD or MMC
1861090ab3ffSSimon Horman
1862f45b1149SSimon Hormanconfig ZBOOT_ROM_MMCIF
1863f45b1149SSimon Horman	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
1864f45b1149SSimon Horman	help
1865090ab3ffSSimon Horman	  Load image from MMCIF hardware block.
1866090ab3ffSSimon Horman
1867090ab3ffSSimon Hormanconfig ZBOOT_ROM_SH_MOBILE_SDHI
1868090ab3ffSSimon Horman	bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1869090ab3ffSSimon Horman	help
1870090ab3ffSSimon Horman	  Load image from SDHI hardware block
1871090ab3ffSSimon Horman
1872090ab3ffSSimon Hormanendchoice
1873f45b1149SSimon Horman
1874e2a6a3aaSJohn Bonesioconfig ARM_APPENDED_DTB
1875e2a6a3aaSJohn Bonesio	bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
187610968131SRussell King	depends on OF
1877e2a6a3aaSJohn Bonesio	help
1878e2a6a3aaSJohn Bonesio	  With this option, the boot code will look for a device tree binary
1879e2a6a3aaSJohn Bonesio	  (DTB) appended to zImage
1880e2a6a3aaSJohn Bonesio	  (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1881e2a6a3aaSJohn Bonesio
1882e2a6a3aaSJohn Bonesio	  This is meant as a backward compatibility convenience for those
1883e2a6a3aaSJohn Bonesio	  systems with a bootloader that can't be upgraded to accommodate
1884e2a6a3aaSJohn Bonesio	  the documented boot protocol using a device tree.
1885e2a6a3aaSJohn Bonesio
1886e2a6a3aaSJohn Bonesio	  Beware that there is very little in terms of protection against
1887e2a6a3aaSJohn Bonesio	  this option being confused by leftover garbage in memory that might
1888e2a6a3aaSJohn Bonesio	  look like a DTB header after a reboot if no actual DTB is appended
1889e2a6a3aaSJohn Bonesio	  to zImage.  Do not leave this option active in a production kernel
1890e2a6a3aaSJohn Bonesio	  if you don't intend to always append a DTB.  Proper passing of the
1891e2a6a3aaSJohn Bonesio	  location into r2 of a bootloader provided DTB is always preferable
1892e2a6a3aaSJohn Bonesio	  to this option.
1893e2a6a3aaSJohn Bonesio
1894b90b9a38SNicolas Pitreconfig ARM_ATAG_DTB_COMPAT
1895b90b9a38SNicolas Pitre	bool "Supplement the appended DTB with traditional ATAG information"
1896b90b9a38SNicolas Pitre	depends on ARM_APPENDED_DTB
1897b90b9a38SNicolas Pitre	help
1898b90b9a38SNicolas Pitre	  Some old bootloaders can't be updated to a DTB capable one, yet
1899b90b9a38SNicolas Pitre	  they provide ATAGs with memory configuration, the ramdisk address,
1900b90b9a38SNicolas Pitre	  the kernel cmdline string, etc.  Such information is dynamically
1901b90b9a38SNicolas Pitre	  provided by the bootloader and can't always be stored in a static
1902b90b9a38SNicolas Pitre	  DTB.  To allow a device tree enabled kernel to be used with such
1903b90b9a38SNicolas Pitre	  bootloaders, this option allows zImage to extract the information
1904b90b9a38SNicolas Pitre	  from the ATAG list and store it at run time into the appended DTB.
1905b90b9a38SNicolas Pitre
1906d0f34a11SGenoud Richardchoice
1907d0f34a11SGenoud Richard	prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1908d0f34a11SGenoud Richard	default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1909d0f34a11SGenoud Richard
1910d0f34a11SGenoud Richardconfig ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1911d0f34a11SGenoud Richard	bool "Use bootloader kernel arguments if available"
1912d0f34a11SGenoud Richard	help
1913d0f34a11SGenoud Richard	  Uses the command-line options passed by the boot loader instead of
1914d0f34a11SGenoud Richard	  the device tree bootargs property. If the boot loader doesn't provide
1915d0f34a11SGenoud Richard	  any, the device tree bootargs property will be used.
1916d0f34a11SGenoud Richard
1917d0f34a11SGenoud Richardconfig ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1918d0f34a11SGenoud Richard	bool "Extend with bootloader kernel arguments"
1919d0f34a11SGenoud Richard	help
1920d0f34a11SGenoud Richard	  The command-line arguments provided by the boot loader will be
1921d0f34a11SGenoud Richard	  appended to the the device tree bootargs property.
1922d0f34a11SGenoud Richard
1923d0f34a11SGenoud Richardendchoice
1924d0f34a11SGenoud Richard
19251da177e4SLinus Torvaldsconfig CMDLINE
19261da177e4SLinus Torvalds	string "Default kernel command string"
19271da177e4SLinus Torvalds	default ""
19281da177e4SLinus Torvalds	help
19291da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
19301da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
19311da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
19321da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
19331da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
19341da177e4SLinus Torvalds
19354394c124SVictor Boiviechoice
19364394c124SVictor Boivie	prompt "Kernel command line type" if CMDLINE != ""
19374394c124SVictor Boivie	default CMDLINE_FROM_BOOTLOADER
1938bd51e2f5SNicolas Pitre	depends on ATAGS
19394394c124SVictor Boivie
19404394c124SVictor Boivieconfig CMDLINE_FROM_BOOTLOADER
19414394c124SVictor Boivie	bool "Use bootloader kernel arguments if available"
19424394c124SVictor Boivie	help
19434394c124SVictor Boivie	  Uses the command-line options passed by the boot loader. If
19444394c124SVictor Boivie	  the boot loader doesn't provide any, the default kernel command
19454394c124SVictor Boivie	  string provided in CMDLINE will be used.
19464394c124SVictor Boivie
19474394c124SVictor Boivieconfig CMDLINE_EXTEND
19484394c124SVictor Boivie	bool "Extend bootloader kernel arguments"
19494394c124SVictor Boivie	help
19504394c124SVictor Boivie	  The command-line arguments provided by the boot loader will be
19514394c124SVictor Boivie	  appended to the default kernel command string.
19524394c124SVictor Boivie
195392d2040dSAlexander Hollerconfig CMDLINE_FORCE
195492d2040dSAlexander Holler	bool "Always use the default kernel command string"
195592d2040dSAlexander Holler	help
195692d2040dSAlexander Holler	  Always use the default kernel command string, even if the boot
195792d2040dSAlexander Holler	  loader passes other arguments to the kernel.
195892d2040dSAlexander Holler	  This is useful if you cannot or don't want to change the
195992d2040dSAlexander Holler	  command-line options your boot loader passes to the kernel.
19604394c124SVictor Boivieendchoice
196192d2040dSAlexander Holler
19621da177e4SLinus Torvaldsconfig XIP_KERNEL
19631da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
196410968131SRussell King	depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
19651da177e4SLinus Torvalds	help
19661da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
19671da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
19681da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
19691da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
19701da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
19711da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
19721da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
19731da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
19741da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
19751da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
19761da177e4SLinus Torvalds
19771da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
19781da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
19791da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
19801da177e4SLinus Torvalds
19811da177e4SLinus Torvalds	  If unsure, say N.
19821da177e4SLinus Torvalds
19831da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
19841da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
19851da177e4SLinus Torvalds	depends on XIP_KERNEL
19861da177e4SLinus Torvalds	default "0x00080000"
19871da177e4SLinus Torvalds	help
19881da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
19891da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
19901da177e4SLinus Torvalds	  own flash usage.
19911da177e4SLinus Torvalds
1992c587e4a6SRichard Purdieconfig KEXEC
1993c587e4a6SRichard Purdie	bool "Kexec system call (EXPERIMENTAL)"
199419ab428fSStephen Warren	depends on (!SMP || PM_SLEEP_SMP)
1995c587e4a6SRichard Purdie	help
1996c587e4a6SRichard Purdie	  kexec is a system call that implements the ability to shutdown your
1997c587e4a6SRichard Purdie	  current kernel, and to start another kernel.  It is like a reboot
199801dd2fbfSMatt LaPlante	  but it is independent of the system firmware.   And like a reboot
1999c587e4a6SRichard Purdie	  you can start any kernel with it, not just Linux.
2000c587e4a6SRichard Purdie
2001c587e4a6SRichard Purdie	  It is an ongoing process to be certain the hardware in a machine
2002c587e4a6SRichard Purdie	  is properly shutdown, so do not be surprised if this code does not
2003bf220695SGeert Uytterhoeven	  initially work for you.
2004c587e4a6SRichard Purdie
20054cd9d6f7SRichard Purdieconfig ATAGS_PROC
20064cd9d6f7SRichard Purdie	bool "Export atags in procfs"
2007bd51e2f5SNicolas Pitre	depends on ATAGS && KEXEC
2008b98d7291SUli Luckas	default y
20094cd9d6f7SRichard Purdie	help
20104cd9d6f7SRichard Purdie	  Should the atags used to boot the kernel be exported in an "atags"
20114cd9d6f7SRichard Purdie	  file in procfs. Useful with kexec.
20124cd9d6f7SRichard Purdie
2013cb5d39b3SMika Westerbergconfig CRASH_DUMP
2014cb5d39b3SMika Westerberg	bool "Build kdump crash kernel (EXPERIMENTAL)"
2015cb5d39b3SMika Westerberg	help
2016cb5d39b3SMika Westerberg	  Generate crash dump after being started by kexec. This should
2017cb5d39b3SMika Westerberg	  be normally only set in special crash dump kernels which are
2018cb5d39b3SMika Westerberg	  loaded in the main kernel with kexec-tools into a specially
2019cb5d39b3SMika Westerberg	  reserved region and then later executed after a crash by
2020cb5d39b3SMika Westerberg	  kdump/kexec. The crash dump kernel must be compiled to a
2021cb5d39b3SMika Westerberg	  memory address not used by the main kernel
2022cb5d39b3SMika Westerberg
2023cb5d39b3SMika Westerberg	  For more details see Documentation/kdump/kdump.txt
2024cb5d39b3SMika Westerberg
2025e69edc79SEric Miaoconfig AUTO_ZRELADDR
2026e69edc79SEric Miao	bool "Auto calculation of the decompressed kernel image address"
2027e69edc79SEric Miao	help
2028e69edc79SEric Miao	  ZRELADDR is the physical address where the decompressed kernel
2029e69edc79SEric Miao	  image will be placed. If AUTO_ZRELADDR is selected, the address
2030e69edc79SEric Miao	  will be determined at run-time by masking the current IP with
2031e69edc79SEric Miao	  0xf8000000. This assumes the zImage being placed in the first 128MB
2032e69edc79SEric Miao	  from start of memory.
2033e69edc79SEric Miao
20341da177e4SLinus Torvaldsendmenu
20351da177e4SLinus Torvalds
2036ac9d7efcSRussell Kingmenu "CPU Power Management"
20371da177e4SLinus Torvalds
20381da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
20391da177e4SLinus Torvalds
2040ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig"
2041ac9d7efcSRussell King
2042ac9d7efcSRussell Kingendmenu
2043ac9d7efcSRussell King
20441da177e4SLinus Torvaldsmenu "Floating point emulation"
20451da177e4SLinus Torvalds
20461da177e4SLinus Torvaldscomment "At least one emulation must be selected"
20471da177e4SLinus Torvalds
20481da177e4SLinus Torvaldsconfig FPE_NWFPE
20491da177e4SLinus Torvalds	bool "NWFPE math emulation"
2050593c252aSDave Martin	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
20511da177e4SLinus Torvalds	---help---
20521da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
20531da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
20541da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
20551da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
20561da177e4SLinus Torvalds
20571da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
20581da177e4SLinus Torvalds	  early in the bootup.
20591da177e4SLinus Torvalds
20601da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
20611da177e4SLinus Torvalds	bool "Support extended precision"
2062bedf142bSLennert Buytenhek	depends on FPE_NWFPE
20631da177e4SLinus Torvalds	help
20641da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
20651da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
20661da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
20671da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
20681da177e4SLinus Torvalds	  floating point emulator without any good reason.
20691da177e4SLinus Torvalds
20701da177e4SLinus Torvalds	  You almost surely want to say N here.
20711da177e4SLinus Torvalds
20721da177e4SLinus Torvaldsconfig FPE_FASTFPE
20731da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
2074d6f94fa0SKees Cook	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
20751da177e4SLinus Torvalds	---help---
20761da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
20771da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
20781da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
20791da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
20801da177e4SLinus Torvalds
20811da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
20821da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
20831da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
20841da177e4SLinus Torvalds	  choose NWFPE.
20851da177e4SLinus Torvalds
20861da177e4SLinus Torvaldsconfig VFP
20871da177e4SLinus Torvalds	bool "VFP-format floating point maths"
2088e399b1a4SRussell King	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
20891da177e4SLinus Torvalds	help
20901da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
20911da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
20921da177e4SLinus Torvalds
20931da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
20941da177e4SLinus Torvalds	  release notes and additional status information.
20951da177e4SLinus Torvalds
20961da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
20971da177e4SLinus Torvalds
209825ebee02SCatalin Marinasconfig VFPv3
209925ebee02SCatalin Marinas	bool
210025ebee02SCatalin Marinas	depends on VFP
210125ebee02SCatalin Marinas	default y if CPU_V7
210225ebee02SCatalin Marinas
2103b5872db4SCatalin Marinasconfig NEON
2104b5872db4SCatalin Marinas	bool "Advanced SIMD (NEON) Extension support"
2105b5872db4SCatalin Marinas	depends on VFPv3 && CPU_V7
2106b5872db4SCatalin Marinas	help
2107b5872db4SCatalin Marinas	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2108b5872db4SCatalin Marinas	  Extension.
2109b5872db4SCatalin Marinas
211073c132c1SArd Biesheuvelconfig KERNEL_MODE_NEON
211173c132c1SArd Biesheuvel	bool "Support for NEON in kernel mode"
2112c4a30c3bSRussell King	depends on NEON && AEABI
211373c132c1SArd Biesheuvel	help
211473c132c1SArd Biesheuvel	  Say Y to include support for NEON in kernel mode.
211573c132c1SArd Biesheuvel
21161da177e4SLinus Torvaldsendmenu
21171da177e4SLinus Torvalds
21181da177e4SLinus Torvaldsmenu "Userspace binary formats"
21191da177e4SLinus Torvalds
21201da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
21211da177e4SLinus Torvalds
21221da177e4SLinus Torvaldsconfig ARTHUR
21231da177e4SLinus Torvalds	tristate "RISC OS personality"
2124704bdda0SNicolas Pitre	depends on !AEABI
21251da177e4SLinus Torvalds	help
21261da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
21271da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
21281da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
21291da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
21301da177e4SLinus Torvalds	  will be called arthur).
21311da177e4SLinus Torvalds
21321da177e4SLinus Torvaldsendmenu
21331da177e4SLinus Torvalds
21341da177e4SLinus Torvaldsmenu "Power management options"
21351da177e4SLinus Torvalds
2136eceab4acSRussell Kingsource "kernel/power/Kconfig"
21371da177e4SLinus Torvalds
2138f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE
213919a0519dSEzequiel Garcia	depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
2140f0d75153SUwe Kleine-König		CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
2141f4cb5700SJohannes Berg	def_bool y
2142f4cb5700SJohannes Berg
214315e0d9e3SArnd Bergmannconfig ARM_CPU_SUSPEND
214415e0d9e3SArnd Bergmann	def_bool PM_SLEEP
214515e0d9e3SArnd Bergmann
2146603fb42aSSebastian Capellaconfig ARCH_HIBERNATION_POSSIBLE
2147603fb42aSSebastian Capella	bool
2148603fb42aSSebastian Capella	depends on MMU
2149603fb42aSSebastian Capella	default y if ARCH_SUSPEND_POSSIBLE
2150603fb42aSSebastian Capella
21511da177e4SLinus Torvaldsendmenu
21521da177e4SLinus Torvalds
2153d5950b43SSam Ravnborgsource "net/Kconfig"
2154d5950b43SSam Ravnborg
2155ac25150fSUwe Kleine-Königsource "drivers/Kconfig"
21561da177e4SLinus Torvalds
21571da177e4SLinus Torvaldssource "fs/Kconfig"
21581da177e4SLinus Torvalds
21591da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
21601da177e4SLinus Torvalds
21611da177e4SLinus Torvaldssource "security/Kconfig"
21621da177e4SLinus Torvalds
21631da177e4SLinus Torvaldssource "crypto/Kconfig"
21641da177e4SLinus Torvalds
21651da177e4SLinus Torvaldssource "lib/Kconfig"
2166749cf76cSChristoffer Dall
2167749cf76cSChristoffer Dallsource "arch/arm/kvm/Kconfig"
2168