xref: /linux/arch/arm/Kconfig (revision e4e3a37d3316332e02e06188dccf4401611e07b9)
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
94badad35SPeter Zijlstra	select ARCH_SUPPORTS_ATOMIC_RMW
10017f161aSKim Phillips	select ARCH_USE_BUILTIN_BSWAP
110cbad9c9SWill Deacon	select ARCH_USE_CMPXCHG_LOCKREF
12b1b3f49cSRussell King	select ARCH_WANT_IPC_PARSE_VERSION
13ee951c63SStephen Boyd	select BUILDTIME_EXTABLE_SORT if MMU
14171b3f0dSRussell King	select CLONE_BACKWARDS
15b1b3f49cSRussell King	select CPU_PM if (SUSPEND || CPU_IDLE)
16dce5c9e3SWill Deacon	select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
174477ca45SUwe Kleine-König	select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
18b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
19171b3f0dSRussell King	select GENERIC_IDLE_POLL_SETUP
20b1b3f49cSRussell King	select GENERIC_IRQ_PROBE
21b1b3f49cSRussell King	select GENERIC_IRQ_SHOW
22b1b3f49cSRussell King	select GENERIC_PCI_IOMAP
2338ff87f7SStephen Boyd	select GENERIC_SCHED_CLOCK
24b1b3f49cSRussell King	select GENERIC_SMP_IDLE_THREAD
25b1b3f49cSRussell King	select GENERIC_STRNCPY_FROM_USER
26b1b3f49cSRussell King	select GENERIC_STRNLEN_USER
27b1b3f49cSRussell King	select HARDIRQS_SW_RESEND
287a017721SAKASHI Takahiro	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
2909f05d85SRabin Vincent	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
305cbad0ebSJason Wessel	select HAVE_ARCH_KGDB
3191702175SKees Cook	select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
320693bf68SWade Farnsworth	select HAVE_ARCH_TRACEHOOK
33b1b3f49cSRussell King	select HAVE_BPF_JIT
3451aaf81fSRussell King	select HAVE_CC_STACKPROTECTOR
35171b3f0dSRussell King	select HAVE_CONTEXT_TRACKING
36b1b3f49cSRussell King	select HAVE_C_RECORDMCOUNT
37b1b3f49cSRussell King	select HAVE_DEBUG_KMEMLEAK
38b1b3f49cSRussell King	select HAVE_DMA_API_DEBUG
39b1b3f49cSRussell King	select HAVE_DMA_ATTRS
40b1b3f49cSRussell King	select HAVE_DMA_CONTIGUOUS if MMU
41b1b3f49cSRussell King	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
42dce5c9e3SWill Deacon	select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
43b1b3f49cSRussell King	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
44b1b3f49cSRussell King	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
45b1b3f49cSRussell King	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
46b1b3f49cSRussell King	select HAVE_GENERIC_DMA_COHERENT
47b1b3f49cSRussell King	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
48b1b3f49cSRussell King	select HAVE_IDE if PCI || ISA || PCMCIA
4987c46b6cSRussell King	select HAVE_IRQ_TIME_ACCOUNTING
50b1b3f49cSRussell King	select HAVE_KERNEL_GZIP
51f9b493acSKyungsik Lee	select HAVE_KERNEL_LZ4
52b1b3f49cSRussell King	select HAVE_KERNEL_LZMA
53b1b3f49cSRussell King	select HAVE_KERNEL_LZO
54b1b3f49cSRussell King	select HAVE_KERNEL_XZ
55856bc356SJon Medhurst	select HAVE_KPROBES if !XIP_KERNEL
569edddaa2SAnanth N Mavinakayanahalli	select HAVE_KRETPROBES if (HAVE_KPROBES)
57b1b3f49cSRussell King	select HAVE_MEMBLOCK
58171b3f0dSRussell King	select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
59b1b3f49cSRussell King	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
607ada189fSJamie Iles	select HAVE_PERF_EVENTS
6149863894SWill Deacon	select HAVE_PERF_REGS
6249863894SWill Deacon	select HAVE_PERF_USER_STACK_DUMP
63e513f8bfSWill Deacon	select HAVE_REGS_AND_STACK_ACCESS_API
64b1b3f49cSRussell King	select HAVE_SYSCALL_TRACEPOINTS
65af1839ebSCatalin Marinas	select HAVE_UID16
6631c1fc81SKevin Hilman	select HAVE_VIRT_CPU_ACCOUNTING_GEN
67da0ec6f7SThomas Gleixner	select IRQ_FORCED_THREADING
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
86308c09f1SLaura Abbott	select ARCH_HAS_SG_CHAIN
8774facffeSRussell King	bool
8874facffeSRussell King
894ce63fcdSMarek Szyprowskiconfig NEED_SG_DMA_LENGTH
904ce63fcdSMarek Szyprowski	bool
914ce63fcdSMarek Szyprowski
924ce63fcdSMarek Szyprowskiconfig ARM_DMA_USE_IOMMU
934ce63fcdSMarek Szyprowski	bool
94b1b3f49cSRussell King	select ARM_HAS_SG_CHAIN
95b1b3f49cSRussell King	select NEED_SG_DMA_LENGTH
964ce63fcdSMarek Szyprowski
9760460abfSSeung-Woo Kimif ARM_DMA_USE_IOMMU
9860460abfSSeung-Woo Kim
9960460abfSSeung-Woo Kimconfig ARM_DMA_IOMMU_ALIGNMENT
10060460abfSSeung-Woo Kim	int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
10160460abfSSeung-Woo Kim	range 4 9
10260460abfSSeung-Woo Kim	default 8
10360460abfSSeung-Woo Kim	help
10460460abfSSeung-Woo Kim	  DMA mapping framework by default aligns all buffers to the smallest
10560460abfSSeung-Woo Kim	  PAGE_SIZE order which is greater than or equal to the requested buffer
10660460abfSSeung-Woo Kim	  size. This works well for buffers up to a few hundreds kilobytes, but
10760460abfSSeung-Woo Kim	  for larger buffers it just a waste of address space. Drivers which has
10860460abfSSeung-Woo Kim	  relatively small addressing window (like 64Mib) might run out of
10960460abfSSeung-Woo Kim	  virtual space with just a few allocations.
11060460abfSSeung-Woo Kim
11160460abfSSeung-Woo Kim	  With this parameter you can specify the maximum PAGE_SIZE order for
11260460abfSSeung-Woo Kim	  DMA IOMMU buffers. Larger buffers will be aligned only to this
11360460abfSSeung-Woo Kim	  specified order. The order is expressed as a power of two multiplied
11460460abfSSeung-Woo Kim	  by the PAGE_SIZE.
11560460abfSSeung-Woo Kim
11660460abfSSeung-Woo Kimendif
11760460abfSSeung-Woo Kim
1180b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI
1190b05da72SHans Ulli Kroll	bool
1200b05da72SHans Ulli Kroll
12175e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION
12275e7153aSRalf Baechle	bool
12375e7153aSRalf Baechle
124bc581770SLinus Walleijconfig HAVE_TCM
125bc581770SLinus Walleij	bool
126bc581770SLinus Walleij	select GENERIC_ALLOCATOR
127bc581770SLinus Walleij
128e119bfffSRussell Kingconfig HAVE_PROC_CPU
129e119bfffSRussell King	bool
130e119bfffSRussell King
131ce816fa8SUwe Kleine-Königconfig NO_IOPORT_MAP
1325ea81769SAl Viro	bool
1335ea81769SAl Viro
1341da177e4SLinus Torvaldsconfig EISA
1351da177e4SLinus Torvalds	bool
1361da177e4SLinus Torvalds	---help---
1371da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
1381da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
1391da177e4SLinus Torvalds
1401da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
1411da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
1421da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
1431da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
1441da177e4SLinus Torvalds
1451da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
1461da177e4SLinus Torvalds
1471da177e4SLinus Torvalds	  Otherwise, say N.
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvaldsconfig SBUS
1501da177e4SLinus Torvalds	bool
1511da177e4SLinus Torvalds
152f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT
153f16fb1ecSRussell King	bool
154f16fb1ecSRussell King	default y
155f16fb1ecSRussell King
156f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT
157f76e9154SNicolas Pitre	bool
158f76e9154SNicolas Pitre	depends on !SMP
159f76e9154SNicolas Pitre	default y
160f76e9154SNicolas Pitre
161f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT
162f16fb1ecSRussell King	bool
163f16fb1ecSRussell King	default y
164f16fb1ecSRussell King
1657ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT
1667ad1bcb2SRussell King	bool
1677ad1bcb2SRussell King	default y
1687ad1bcb2SRussell King
1691da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
1701da177e4SLinus Torvalds	bool
1718a87411bSWill Deacon	default y
1721da177e4SLinus Torvalds
173f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32
174f0d1b0b3SDavid Howells	bool
175f0d1b0b3SDavid Howells
176f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64
177f0d1b0b3SDavid Howells	bool
178f0d1b0b3SDavid Howells
1794a1b5733SEduardo Valentinconfig ARCH_HAS_BANDGAP
1804a1b5733SEduardo Valentin	bool
1814a1b5733SEduardo Valentin
182b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
183b89c3b16SAkinobu Mita	bool
184b89c3b16SAkinobu Mita	default y
185b89c3b16SAkinobu Mita
1861da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
1871da177e4SLinus Torvalds	bool
1881da177e4SLinus Torvalds	default y
1891da177e4SLinus Torvalds
190a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
191a08b6b79Sviro@ZenIV.linux.org.uk	bool
192a08b6b79Sviro@ZenIV.linux.org.uk
1935ac6da66SChristoph Lameterconfig ZONE_DMA
1945ac6da66SChristoph Lameter	bool
1955ac6da66SChristoph Lameter
196ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE
197ccd7ab7fSFUJITA Tomonori       def_bool y
198ccd7ab7fSFUJITA Tomonori
199c7edc9e3SDavid A. Longconfig ARCH_SUPPORTS_UPROBES
200c7edc9e3SDavid A. Long	def_bool y
201c7edc9e3SDavid A. Long
20258af4a24SRob Herringconfig ARCH_HAS_DMA_SET_COHERENT_MASK
20358af4a24SRob Herring	bool
20458af4a24SRob Herring
2051da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
2061da177e4SLinus Torvalds	bool
2071da177e4SLinus Torvalds
2081da177e4SLinus Torvaldsconfig FIQ
2091da177e4SLinus Torvalds	bool
2101da177e4SLinus Torvalds
21113a5045dSRob Herringconfig NEED_RET_TO_USER
21213a5045dSRob Herring	bool
21313a5045dSRob Herring
214034d2f5aSAl Viroconfig ARCH_MTD_XIP
215034d2f5aSAl Viro	bool
216034d2f5aSAl Viro
217c760fc19SHyok S. Choiconfig VECTORS_BASE
218c760fc19SHyok S. Choi	hex
2196afd6faeSHyok S. Choi	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
220c760fc19SHyok S. Choi	default DRAM_BASE if REMAP_VECTORS_TO_RAM
221c760fc19SHyok S. Choi	default 0x00000000
222c760fc19SHyok S. Choi	help
22319accfd3SRussell King	  The base address of exception vectors.  This must be two pages
22419accfd3SRussell King	  in size.
225c760fc19SHyok S. Choi
226dc21af99SRussell Kingconfig ARM_PATCH_PHYS_VIRT
227c1becedcSRussell King	bool "Patch physical to virtual translations at runtime" if EMBEDDED
228c1becedcSRussell King	default y
229b511d75dSNicolas Pitre	depends on !XIP_KERNEL && MMU
230dc21af99SRussell King	depends on !ARCH_REALVIEW || !SPARSEMEM
231dc21af99SRussell King	help
232111e9a5cSRussell King	  Patch phys-to-virt and virt-to-phys translation functions at
233111e9a5cSRussell King	  boot and module load time according to the position of the
234111e9a5cSRussell King	  kernel in system memory.
235dc21af99SRussell King
236111e9a5cSRussell King	  This can only be used with non-XIP MMU kernels where the base
237daece596SNicolas Pitre	  of physical memory is at a 16MB boundary.
238dc21af99SRussell King
239c1becedcSRussell King	  Only disable this option if you know that you do not require
240c1becedcSRussell King	  this feature (eg, building a kernel for a single machine) and
241c1becedcSRussell King	  you need to shrink the kernel to the minimal size.
242c1becedcSRussell King
243c334bc15SRob Herringconfig NEED_MACH_IO_H
244c334bc15SRob Herring	bool
245c334bc15SRob Herring	help
246c334bc15SRob Herring	  Select this when mach/io.h is required to provide special
247c334bc15SRob Herring	  definitions for this platform.  The need for mach/io.h should
248c334bc15SRob Herring	  be avoided when possible.
249c334bc15SRob Herring
2500cdc8b92SNicolas Pitreconfig NEED_MACH_MEMORY_H
2511b9f95f8SNicolas Pitre	bool
252111e9a5cSRussell King	help
2530cdc8b92SNicolas Pitre	  Select this when mach/memory.h is required to provide special
2540cdc8b92SNicolas Pitre	  definitions for this platform.  The need for mach/memory.h should
2550cdc8b92SNicolas Pitre	  be avoided when possible.
2561b9f95f8SNicolas Pitre
2571b9f95f8SNicolas Pitreconfig PHYS_OFFSET
258974c0724SNicolas Pitre	hex "Physical address of main memory" if MMU
259c6f54a9bSUwe Kleine-König	depends on !ARM_PATCH_PHYS_VIRT
260974c0724SNicolas Pitre	default DRAM_BASE if !MMU
261c6f54a9bSUwe Kleine-König	default 0x00000000 if ARCH_EBSA110 || \
262c6f54a9bSUwe Kleine-König			EP93XX_SDCE3_SYNC_PHYS_OFFSET || \
263c6f54a9bSUwe Kleine-König			ARCH_FOOTBRIDGE || \
264c6f54a9bSUwe Kleine-König			ARCH_INTEGRATOR || \
265c6f54a9bSUwe Kleine-König			ARCH_IOP13XX || \
266c6f54a9bSUwe Kleine-König			ARCH_KS8695 || \
267c6f54a9bSUwe Kleine-König			(ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET)
268c6f54a9bSUwe Kleine-König	default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
269c6f54a9bSUwe Kleine-König	default 0x20000000 if ARCH_S5PV210
270c6f54a9bSUwe Kleine-König	default 0x70000000 if REALVIEW_HIGH_PHYS_OFFSET
271c6f54a9bSUwe Kleine-König	default 0xc0000000 if EP93XX_SDCE0_PHYS_OFFSET || ARCH_SA1100
272c6f54a9bSUwe Kleine-König	default 0xd0000000 if EP93XX_SDCE1_PHYS_OFFSET
273c6f54a9bSUwe Kleine-König	default 0xe0000000 if EP93XX_SDCE2_PHYS_OFFSET
274c6f54a9bSUwe Kleine-König	default 0xf0000000 if EP93XX_SDCE3_ASYNC_PHYS_OFFSET
2751b9f95f8SNicolas Pitre	help
2761b9f95f8SNicolas Pitre	  Please provide the physical address corresponding to the
2771b9f95f8SNicolas Pitre	  location of main memory in your system.
278cada3c08SRussell King
27987e040b6SSimon Glassconfig GENERIC_BUG
28087e040b6SSimon Glass	def_bool y
28187e040b6SSimon Glass	depends on BUG
28287e040b6SSimon Glass
2831da177e4SLinus Torvaldssource "init/Kconfig"
2841da177e4SLinus Torvalds
285dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer"
286dc52ddc0SMatt Helsley
2871da177e4SLinus Torvaldsmenu "System Type"
2881da177e4SLinus Torvalds
2893c427975SHyok S. Choiconfig MMU
2903c427975SHyok S. Choi	bool "MMU-based Paged Memory Management Support"
2913c427975SHyok S. Choi	default y
2923c427975SHyok S. Choi	help
2933c427975SHyok S. Choi	  Select if you want MMU-based virtualised addressing space
2943c427975SHyok S. Choi	  support by paged memory management. If unsure, say 'Y'.
2953c427975SHyok S. Choi
296ccf50e23SRussell King#
297ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option
298ccf50e23SRussell King# text.  Please add new entries in the option alphabetic order.
299ccf50e23SRussell King#
3001da177e4SLinus Torvaldschoice
3011da177e4SLinus Torvalds	prompt "ARM system type"
3021420b22bSArnd Bergmann	default ARCH_VERSATILE if !MMU
3031420b22bSArnd Bergmann	default ARCH_MULTIPLATFORM if MMU
3041da177e4SLinus Torvalds
305387798b3SRob Herringconfig ARCH_MULTIPLATFORM
306387798b3SRob Herring	bool "Allow multiple platforms to be selected"
307b1b3f49cSRussell King	depends on MMU
308ddb902ccSRob Herring	select ARCH_WANT_OPTIONAL_GPIOLIB
30942dc836dSOlof Johansson	select ARM_HAS_SG_CHAIN
310387798b3SRob Herring	select ARM_PATCH_PHYS_VIRT
311387798b3SRob Herring	select AUTO_ZRELADDR
3126d0add40SRob Herring	select CLKSRC_OF
31366314223SDinh Nguyen	select COMMON_CLK
314ddb902ccSRob Herring	select GENERIC_CLOCKEVENTS
31508d38bebSWill Deacon	select MIGHT_HAVE_PCI
316387798b3SRob Herring	select MULTI_IRQ_HANDLER
31766314223SDinh Nguyen	select SPARSE_IRQ
31866314223SDinh Nguyen	select USE_OF
31966314223SDinh Nguyen
3204af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR
3214af6fee1SDeepak Saxena	bool "ARM Ltd. Integrator family"
322b1b3f49cSRussell King	select ARM_AMBA
32391942d17SUwe Kleine-König	select ARM_PATCH_PHYS_VIRT if MMU
324fe989145Spanchaxari	select AUTO_ZRELADDR
325a613163dSLinus Walleij	select COMMON_CLK
326f9a6aa43SLinus Walleij	select COMMON_CLK_VERSATILE
327b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
3289904f793SLinus Walleij	select HAVE_TCM
329c5a0adb5SRussell King	select ICST
330b1b3f49cSRussell King	select MULTI_IRQ_HANDLER
331f4b8b319SRussell King	select PLAT_VERSATILE
332695436e3SLinus Walleij	select SPARSE_IRQ
333d7057e1dSLinus Walleij	select USE_OF
3342389d501SLinus Walleij	select VERSATILE_FPGA_IRQ
3354af6fee1SDeepak Saxena	help
3364af6fee1SDeepak Saxena	  Support for ARM's Integrator platform.
3374af6fee1SDeepak Saxena
3384af6fee1SDeepak Saxenaconfig ARCH_REALVIEW
3394af6fee1SDeepak Saxena	bool "ARM Ltd. RealView family"
340b1b3f49cSRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
3414af6fee1SDeepak Saxena	select ARM_AMBA
342b1b3f49cSRussell King	select ARM_TIMER_SP804
343f9a6aa43SLinus Walleij	select COMMON_CLK
344f9a6aa43SLinus Walleij	select COMMON_CLK_VERSATILE
345ae30ceacSCatalin Marinas	select GENERIC_CLOCKEVENTS
346b1b3f49cSRussell King	select GPIO_PL061 if GPIOLIB
347b1b3f49cSRussell King	select ICST
348b1b3f49cSRussell King	select NEED_MACH_MEMORY_H
349f4b8b319SRussell King	select PLAT_VERSATILE
3504af6fee1SDeepak Saxena	help
3514af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
3524af6fee1SDeepak Saxena
3534af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
3544af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
355b1b3f49cSRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
3564af6fee1SDeepak Saxena	select ARM_AMBA
357b1b3f49cSRussell King	select ARM_TIMER_SP804
3584af6fee1SDeepak Saxena	select ARM_VIC
3596d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
360b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
361aa3831cfSKyungmin Park	select HAVE_MACH_CLKDEV
362c5a0adb5SRussell King	select ICST
363f4b8b319SRussell King	select PLAT_VERSATILE
364b1b3f49cSRussell King	select PLAT_VERSATILE_CLOCK
3652389d501SLinus Walleij	select VERSATILE_FPGA_IRQ
3664af6fee1SDeepak Saxena	help
3674af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
3684af6fee1SDeepak Saxena
3698fc5ffa0SAndrew Victorconfig ARCH_AT91
3708fc5ffa0SAndrew Victor	bool "Atmel AT91"
371f373e8c0SRyan Mallon	select ARCH_REQUIRE_GPIOLIB
372bd602995SJean-Christophe PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
373e261501dSNicolas Ferre	select IRQ_DOMAIN
3741ac02d79SRob Herring	select NEED_MACH_IO_H if PCCARD
3756732ae5cSJean-Christophe PLAGNIOL-VILLARD	select PINCTRL
3766732ae5cSJean-Christophe PLAGNIOL-VILLARD	select PINCTRL_AT91 if USE_OF
3774af6fee1SDeepak Saxena	help
378929e994fSNicolas Ferre	  This enables support for systems based on Atmel
379929e994fSNicolas Ferre	  AT91RM9200 and AT91SAM9* processors.
3804af6fee1SDeepak Saxena
38193e22567SRussell Kingconfig ARCH_CLPS711X
38293e22567SRussell King	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
383a3b8d4a5SAlexander Shiyan	select ARCH_REQUIRE_GPIOLIB
384ea7d1bc9SAlexander Shiyan	select AUTO_ZRELADDR
385c99f72adSAlexander Shiyan	select CLKSRC_MMIO
38693e22567SRussell King	select COMMON_CLK
38793e22567SRussell King	select CPU_ARM720T
3884a8355c4SAlexander Shiyan	select GENERIC_CLOCKEVENTS
3896597619fSAlexander Shiyan	select MFD_SYSCON
390*e4e3a37dSAlexander Shiyan	select SOC_BUS
39193e22567SRussell King	help
39293e22567SRussell King	  Support for Cirrus Logic 711x/721x/731x based boards.
39393e22567SRussell King
394788c9700SRussell Kingconfig ARCH_GEMINI
395788c9700SRussell King	bool "Cortina Systems Gemini"
396788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
397f3372c01SLinus Walleij	select CLKSRC_MMIO
398b1b3f49cSRussell King	select CPU_FA526
399f3372c01SLinus Walleij	select GENERIC_CLOCKEVENTS
400788c9700SRussell King	help
401788c9700SRussell King	  Support for the Cortina Systems Gemini family SoCs
402788c9700SRussell King
4031da177e4SLinus Torvaldsconfig ARCH_EBSA110
4041da177e4SLinus Torvalds	bool "EBSA-110"
405b1b3f49cSRussell King	select ARCH_USES_GETTIMEOFFSET
406c750815eSRussell King	select CPU_SA110
407f7e68bbfSRussell King	select ISA
408c334bc15SRob Herring	select NEED_MACH_IO_H
4090cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
410ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
4111da177e4SLinus Torvalds	help
4121da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
413f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
4141da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
4151da177e4SLinus Torvalds	  parallel port.
4161da177e4SLinus Torvalds
4176d85e2b0SUwe Kleine-Königconfig ARCH_EFM32
4186d85e2b0SUwe Kleine-König	bool "Energy Micro efm32"
4196d85e2b0SUwe Kleine-König	depends on !MMU
4206d85e2b0SUwe Kleine-König	select ARCH_REQUIRE_GPIOLIB
4216d85e2b0SUwe Kleine-König	select ARM_NVIC
42251aaf81fSRussell King	select AUTO_ZRELADDR
4236d85e2b0SUwe Kleine-König	select CLKSRC_OF
4246d85e2b0SUwe Kleine-König	select COMMON_CLK
4256d85e2b0SUwe Kleine-König	select CPU_V7M
4266d85e2b0SUwe Kleine-König	select GENERIC_CLOCKEVENTS
4276d85e2b0SUwe Kleine-König	select NO_DMA
428ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
4296d85e2b0SUwe Kleine-König	select SPARSE_IRQ
4306d85e2b0SUwe Kleine-König	select USE_OF
4316d85e2b0SUwe Kleine-König	help
4326d85e2b0SUwe Kleine-König	  Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
4336d85e2b0SUwe Kleine-König	  processors.
4346d85e2b0SUwe Kleine-König
435e7736d47SLennert Buytenhekconfig ARCH_EP93XX
436e7736d47SLennert Buytenhek	bool "EP93xx-based"
437b1b3f49cSRussell King	select ARCH_HAS_HOLES_MEMORYMODEL
438b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
439b1b3f49cSRussell King	select ARCH_USES_GETTIMEOFFSET
440e7736d47SLennert Buytenhek	select ARM_AMBA
441e7736d47SLennert Buytenhek	select ARM_VIC
4426d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
443b1b3f49cSRussell King	select CPU_ARM920T
444e7736d47SLennert Buytenhek	help
445e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
446e7736d47SLennert Buytenhek
4471da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
4481da177e4SLinus Torvalds	bool "FootBridge"
449c750815eSRussell King	select CPU_SA110
4501da177e4SLinus Torvalds	select FOOTBRIDGE
4514e8d7637SRussell King	select GENERIC_CLOCKEVENTS
452d0ee9f40SArnd Bergmann	select HAVE_IDE
4538ef6e620SRob Herring	select NEED_MACH_IO_H if !MMU
4540cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
455f999b8bdSMartin Michlmayr	help
456f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
457f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
4581da177e4SLinus Torvalds
4594af6fee1SDeepak Saxenaconfig ARCH_NETX
4604af6fee1SDeepak Saxena	bool "Hilscher NetX based"
461b1b3f49cSRussell King	select ARM_VIC
462234b6cedSRussell King	select CLKSRC_MMIO
463c750815eSRussell King	select CPU_ARM926T
4642fcfe6b8SUwe Kleine-König	select GENERIC_CLOCKEVENTS
465f999b8bdSMartin Michlmayr	help
4664af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
4674af6fee1SDeepak Saxena
4683b938be6SRussell Kingconfig ARCH_IOP13XX
4693b938be6SRussell King	bool "IOP13xx-based"
4703b938be6SRussell King	depends on MMU
471b1b3f49cSRussell King	select CPU_XSC3
4720cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
47313a5045dSRob Herring	select NEED_RET_TO_USER
474b1b3f49cSRussell King	select PCI
475b1b3f49cSRussell King	select PLAT_IOP
476b1b3f49cSRussell King	select VMSPLIT_1G
47737ebbcffSThomas Gleixner	select SPARSE_IRQ
4783b938be6SRussell King	help
4793b938be6SRussell King	  Support for Intel's IOP13XX (XScale) family of processors.
4803b938be6SRussell King
4813f7e5815SLennert Buytenhekconfig ARCH_IOP32X
4823f7e5815SLennert Buytenhek	bool "IOP32x-based"
483a4f7e763SRussell King	depends on MMU
484b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
485c750815eSRussell King	select CPU_XSCALE
486e9004f50SLinus Walleij	select GPIO_IOP
48713a5045dSRob Herring	select NEED_RET_TO_USER
488f7e68bbfSRussell King	select PCI
489b1b3f49cSRussell King	select PLAT_IOP
490f999b8bdSMartin Michlmayr	help
4913f7e5815SLennert Buytenhek	  Support for Intel's 80219 and IOP32X (XScale) family of
4923f7e5815SLennert Buytenhek	  processors.
4933f7e5815SLennert Buytenhek
4943f7e5815SLennert Buytenhekconfig ARCH_IOP33X
4953f7e5815SLennert Buytenhek	bool "IOP33x-based"
4963f7e5815SLennert Buytenhek	depends on MMU
497b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
498c750815eSRussell King	select CPU_XSCALE
499e9004f50SLinus Walleij	select GPIO_IOP
50013a5045dSRob Herring	select NEED_RET_TO_USER
5013f7e5815SLennert Buytenhek	select PCI
502b1b3f49cSRussell King	select PLAT_IOP
5033f7e5815SLennert Buytenhek	help
5043f7e5815SLennert Buytenhek	  Support for Intel's IOP33X (XScale) family of processors.
5051da177e4SLinus Torvalds
5063b938be6SRussell Kingconfig ARCH_IXP4XX
5073b938be6SRussell King	bool "IXP4xx-based"
508a4f7e763SRussell King	depends on MMU
50958af4a24SRob Herring	select ARCH_HAS_DMA_SET_COHERENT_MASK
510b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
51151aaf81fSRussell King	select ARCH_SUPPORTS_BIG_ENDIAN
512234b6cedSRussell King	select CLKSRC_MMIO
513c750815eSRussell King	select CPU_XSCALE
514b1b3f49cSRussell King	select DMABOUNCE if PCI
5153b938be6SRussell King	select GENERIC_CLOCKEVENTS
5160b05da72SHans Ulli Kroll	select MIGHT_HAVE_PCI
517c334bc15SRob Herring	select NEED_MACH_IO_H
5189296d94dSFlorian Fainelli	select USB_EHCI_BIG_ENDIAN_DESC
519171b3f0dSRussell King	select USB_EHCI_BIG_ENDIAN_MMIO
520c4713074SLennert Buytenhek	help
5213b938be6SRussell King	  Support for Intel's IXP4XX (XScale) family of processors.
522c4713074SLennert Buytenhek
523edabd38eSSaeed Bisharaconfig ARCH_DOVE
524edabd38eSSaeed Bishara	bool "Marvell Dove"
525edabd38eSSaeed Bishara	select ARCH_REQUIRE_GPIOLIB
526756b2531SSebastian Hesselbarth	select CPU_PJ4
527edabd38eSSaeed Bishara	select GENERIC_CLOCKEVENTS
5280f81bd43SRussell King	select MIGHT_HAVE_PCI
529171b3f0dSRussell King	select MVEBU_MBUS
5309139acd1SSebastian Hesselbarth	select PINCTRL
5319139acd1SSebastian Hesselbarth	select PINCTRL_DOVE
532abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
533edabd38eSSaeed Bishara	help
534edabd38eSSaeed Bishara	  Support for the Marvell Dove SoC 88AP510
535edabd38eSSaeed Bishara
536788c9700SRussell Kingconfig ARCH_MV78XX0
537788c9700SRussell King	bool "Marvell MV78xx0"
538a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
539b1b3f49cSRussell King	select CPU_FEROCEON
540788c9700SRussell King	select GENERIC_CLOCKEVENTS
541171b3f0dSRussell King	select MVEBU_MBUS
542b1b3f49cSRussell King	select PCI
543abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
544788c9700SRussell King	help
545788c9700SRussell King	  Support for the following Marvell MV78xx0 series SoCs:
546788c9700SRussell King	  MV781x0, MV782x0.
547788c9700SRussell King
548788c9700SRussell Kingconfig ARCH_ORION5X
549788c9700SRussell King	bool "Marvell Orion"
550788c9700SRussell King	depends on MMU
551a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
552b1b3f49cSRussell King	select CPU_FEROCEON
553788c9700SRussell King	select GENERIC_CLOCKEVENTS
554171b3f0dSRussell King	select MVEBU_MBUS
555b1b3f49cSRussell King	select PCI
556abcda1dcSThomas Petazzoni	select PLAT_ORION_LEGACY
557788c9700SRussell King	help
558788c9700SRussell King	  Support for the following Marvell Orion 5x series SoCs:
559788c9700SRussell King	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
560788c9700SRussell King	  Orion-2 (5281), Orion-1-90 (6183).
561788c9700SRussell King
562788c9700SRussell Kingconfig ARCH_MMP
5632f7e8faeSHaojian Zhuang	bool "Marvell PXA168/910/MMP2"
564788c9700SRussell King	depends on MMU
565788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
5666d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
567b1b3f49cSRussell King	select GENERIC_ALLOCATOR
568788c9700SRussell King	select GENERIC_CLOCKEVENTS
569157d2644SHaojian Zhuang	select GPIO_PXA
570c24b3114SHaojian Zhuang	select IRQ_DOMAIN
5710f374561SHaojian Zhuang	select MULTI_IRQ_HANDLER
5727c8f86a4SAxel Lin	select PINCTRL
573788c9700SRussell King	select PLAT_PXA
5740bd86961SHaojian Zhuang	select SPARSE_IRQ
575788c9700SRussell King	help
5762f7e8faeSHaojian Zhuang	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
577788c9700SRussell King
578c53c9cf6SAndrew Victorconfig ARCH_KS8695
579c53c9cf6SAndrew Victor	bool "Micrel/Kendin KS8695"
58072880ad8SDaniel Silverstone	select ARCH_REQUIRE_GPIOLIB
581c7e783d6SLinus Walleij	select CLKSRC_MMIO
582b1b3f49cSRussell King	select CPU_ARM922T
583c7e783d6SLinus Walleij	select GENERIC_CLOCKEVENTS
584b1b3f49cSRussell King	select NEED_MACH_MEMORY_H
585c53c9cf6SAndrew Victor	help
586c53c9cf6SAndrew Victor	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
587c53c9cf6SAndrew Victor	  System-on-Chip devices.
588c53c9cf6SAndrew Victor
589788c9700SRussell Kingconfig ARCH_W90X900
590788c9700SRussell King	bool "Nuvoton W90X900 CPU"
591c52d3d68Swanzongshun	select ARCH_REQUIRE_GPIOLIB
5926d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
5936fa5d5f7SRussell King	select CLKSRC_MMIO
594b1b3f49cSRussell King	select CPU_ARM926T
59558b5369eSwanzongshun	select GENERIC_CLOCKEVENTS
596777f9bebSLennert Buytenhek	help
597a8bc4eadSwanzongshun	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
598a8bc4eadSwanzongshun	  At present, the w90x900 has been renamed nuc900, regarding
599a8bc4eadSwanzongshun	  the ARM series product line, you can login the following
600a8bc4eadSwanzongshun	  link address to know more.
601a8bc4eadSwanzongshun
602a8bc4eadSwanzongshun	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
603a8bc4eadSwanzongshun		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
604585cf175STzachi Perelstein
60593e22567SRussell Kingconfig ARCH_LPC32XX
60693e22567SRussell King	bool "NXP LPC32XX"
60793e22567SRussell King	select ARCH_REQUIRE_GPIOLIB
60893e22567SRussell King	select ARM_AMBA
6094073723aSRussell King	select CLKDEV_LOOKUP
610234b6cedSRussell King	select CLKSRC_MMIO
61193e22567SRussell King	select CPU_ARM926T
61293e22567SRussell King	select GENERIC_CLOCKEVENTS
61393e22567SRussell King	select HAVE_IDE
61493e22567SRussell King	select USE_OF
61593e22567SRussell King	help
61693e22567SRussell King	  Support for the NXP LPC32XX family of processors
61793e22567SRussell King
6181da177e4SLinus Torvaldsconfig ARCH_PXA
6192c8086a5Seric miao	bool "PXA2xx/PXA3xx-based"
620a4f7e763SRussell King	depends on MMU
621b1b3f49cSRussell King	select ARCH_MTD_XIP
622b1b3f49cSRussell King	select ARCH_REQUIRE_GPIOLIB
623b1b3f49cSRussell King	select ARM_CPU_SUSPEND if PM
624b1b3f49cSRussell King	select AUTO_ZRELADDR
6256d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
626234b6cedSRussell King	select CLKSRC_MMIO
6276f6caeaaSRobert Jarzmik	select CLKSRC_OF
628981d0f39SEric Miao	select GENERIC_CLOCKEVENTS
629157d2644SHaojian Zhuang	select GPIO_PXA
630b1b3f49cSRussell King	select HAVE_IDE
631b1b3f49cSRussell King	select MULTI_IRQ_HANDLER
632bd5ce433SEric Miao	select PLAT_PXA
6336ac6b817SHaojian Zhuang	select SPARSE_IRQ
634f999b8bdSMartin Michlmayr	help
6352c8086a5Seric miao	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
6361da177e4SLinus Torvalds
6378fc1b0f8SKumar Galaconfig ARCH_MSM
6388fc1b0f8SKumar Gala	bool "Qualcomm MSM (non-multiplatform)"
639923a081cSPavel Machek	select ARCH_REQUIRE_GPIOLIB
6408cc7f533SStephen Boyd	select COMMON_CLK
641b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
64249cbe786SEric Miao	help
6434b53eb4fSDaniel Walker	  Support for Qualcomm MSM/QSD based systems.  This runs on the
6444b53eb4fSDaniel Walker	  apps processor of the MSM/QSD and depends on a shared memory
6454b53eb4fSDaniel Walker	  interface to the modem processor which runs the baseband
6464b53eb4fSDaniel Walker	  stack and controls some vital subsystems
6474b53eb4fSDaniel Walker	  (clock and power control, etc).
64849cbe786SEric Miao
649bf98c1eaSLaurent Pinchartconfig ARCH_SHMOBILE_LEGACY
6500d9fd616SLaurent Pinchart	bool "Renesas ARM SoCs (non-multiplatform)"
651bf98c1eaSLaurent Pinchart	select ARCH_SHMOBILE
65291942d17SUwe Kleine-König	select ARM_PATCH_PHYS_VIRT if MMU
6535e93c6b4SPaul Mundt	select CLKDEV_LOOKUP
654b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
6554c3ffffdSStephen Boyd	select HAVE_ARM_SCU if SMP
656a894fcc2SStephen Boyd	select HAVE_ARM_TWD if SMP
657aa3831cfSKyungmin Park	select HAVE_MACH_CLKDEV
6583b55658aSDave Martin	select HAVE_SMP
659ce5ea9f3SDave Martin	select MIGHT_HAVE_CACHE_L2X0
66060f1435cSMagnus Damm	select MULTI_IRQ_HANDLER
661ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
6622cd3c927SLaurent Pinchart	select PINCTRL
663b1b3f49cSRussell King	select PM_GENERIC_DOMAINS if PM
664b1b3f49cSRussell King	select SPARSE_IRQ
665c793c1b0SMagnus Damm	help
6660d9fd616SLaurent Pinchart	  Support for Renesas ARM SoC platforms using a non-multiplatform
6670d9fd616SLaurent Pinchart	  kernel. This includes the SH-Mobile, R-Mobile, EMMA-Mobile, R-Car
6680d9fd616SLaurent Pinchart	  and RZ families.
669c793c1b0SMagnus Damm
6701da177e4SLinus Torvaldsconfig ARCH_RPC
6711da177e4SLinus Torvalds	bool "RiscPC"
6721da177e4SLinus Torvalds	select ARCH_ACORN
673a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
67407f841b7SRussell King	select ARCH_SPARSEMEM_ENABLE
6755cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
676fa04e209SArnd Bergmann	select CPU_SA110
677b1b3f49cSRussell King	select FIQ
678d0ee9f40SArnd Bergmann	select HAVE_IDE
679b1b3f49cSRussell King	select HAVE_PATA_PLATFORM
680b1b3f49cSRussell King	select ISA_DMA_API
681c334bc15SRob Herring	select NEED_MACH_IO_H
6820cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
683ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
684b4811bacSArnd Bergmann	select VIRT_TO_BUS
6851da177e4SLinus Torvalds	help
6861da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
6871da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
6881da177e4SLinus Torvalds
6891da177e4SLinus Torvaldsconfig ARCH_SA1100
6901da177e4SLinus Torvalds	bool "SA1100-based"
691b1b3f49cSRussell King	select ARCH_MTD_XIP
6927444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
693b1b3f49cSRussell King	select ARCH_SPARSEMEM_ENABLE
694b1b3f49cSRussell King	select CLKDEV_LOOKUP
695b1b3f49cSRussell King	select CLKSRC_MMIO
696b1b3f49cSRussell King	select CPU_FREQ
697b1b3f49cSRussell King	select CPU_SA1100
698b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
699d0ee9f40SArnd Bergmann	select HAVE_IDE
700b1b3f49cSRussell King	select ISA
7010cdc8b92SNicolas Pitre	select NEED_MACH_MEMORY_H
702375dec92SRussell King	select SPARSE_IRQ
703f999b8bdSMartin Michlmayr	help
704f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
7051da177e4SLinus Torvalds
706b130d5c2SKukjin Kimconfig ARCH_S3C24XX
707b130d5c2SKukjin Kim	bool "Samsung S3C24XX SoCs"
70853650430SKukjin Kim	select ARCH_REQUIRE_GPIOLIB
709335cce74SArnd Bergmann	select ATAGS
710b1b3f49cSRussell King	select CLKDEV_LOOKUP
7114280506aSTomasz Figa	select CLKSRC_SAMSUNG_PWM
7127f78b6ebSRomain Naour	select GENERIC_CLOCKEVENTS
713880cf071STomasz Figa	select GPIO_SAMSUNG
71420676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
715b130d5c2SKukjin Kim	select HAVE_S3C2410_WATCHDOG if WATCHDOG
716b1b3f49cSRussell King	select HAVE_S3C_RTC if RTC_CLASS
71717453dd2SHeiko Stuebner	select MULTI_IRQ_HANDLER
718c334bc15SRob Herring	select NEED_MACH_IO_H
719cd8dc7aeSTomasz Figa	select SAMSUNG_ATAGS
7201da177e4SLinus Torvalds	help
721b130d5c2SKukjin Kim	  Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443
722b130d5c2SKukjin Kim	  and S3C2450 SoCs based systems, such as the Simtec Electronics BAST
723b130d5c2SKukjin Kim	  (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
724b130d5c2SKukjin Kim	  Samsung SMDK2410 development board (and derivatives).
72563b1f51bSBen Dooks
726a08ab637SBen Dooksconfig ARCH_S3C64XX
727a08ab637SBen Dooks	bool "Samsung S3C64XX"
72889f0ce72SBen Dooks	select ARCH_REQUIRE_GPIOLIB
7291db0287aSTomasz Figa	select ARM_AMBA
730b1b3f49cSRussell King	select ARM_VIC
731335cce74SArnd Bergmann	select ATAGS
732b1b3f49cSRussell King	select CLKDEV_LOOKUP
7334280506aSTomasz Figa	select CLKSRC_SAMSUNG_PWM
734ccecba3cSPankaj Dubey	select COMMON_CLK_SAMSUNG
73570bacadbSTomasz Figa	select CPU_V6K
73604a49b71SRomain Naour	select GENERIC_CLOCKEVENTS
737880cf071STomasz Figa	select GPIO_SAMSUNG
73820676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
739c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
740b1b3f49cSRussell King	select HAVE_TCM
741ce816fa8SUwe Kleine-König	select NO_IOPORT_MAP
742b1b3f49cSRussell King	select PLAT_SAMSUNG
7434ab75a3fSArnd Bergmann	select PM_GENERIC_DOMAINS if PM
744b1b3f49cSRussell King	select S3C_DEV_NAND
745b1b3f49cSRussell King	select S3C_GPIO_TRACK
746cd8dc7aeSTomasz Figa	select SAMSUNG_ATAGS
7476e2d9e93STomasz Figa	select SAMSUNG_WAKEMASK
74888f59738STomasz Figa	select SAMSUNG_WDT_RESET
749a08ab637SBen Dooks	help
750a08ab637SBen Dooks	  Samsung S3C64XX series based systems
751a08ab637SBen Dooks
7527c6337e2SKevin Hilmanconfig ARCH_DAVINCI
7537c6337e2SKevin Hilman	bool "TI DaVinci"
754b1b3f49cSRussell King	select ARCH_HAS_HOLES_MEMORYMODEL
755dce1115bSDavid Brownell	select ARCH_REQUIRE_GPIOLIB
7566d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
75720e9969bSDavid Brownell	select GENERIC_ALLOCATOR
758b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
759dc7ad3b3SRussell King	select GENERIC_IRQ_CHIP
760b1b3f49cSRussell King	select HAVE_IDE
7613ad7a42dSMatt Porter	select TI_PRIV_EDMA
762689e331fSSekhar Nori	select USE_OF
763b1b3f49cSRussell King	select ZONE_DMA
7647c6337e2SKevin Hilman	help
7657c6337e2SKevin Hilman	  Support for TI's DaVinci platform.
7667c6337e2SKevin Hilman
767a0694861STony Lindgrenconfig ARCH_OMAP1
768a0694861STony Lindgren	bool "TI OMAP1"
76900a36698SArnd Bergmann	depends on MMU
770b1b3f49cSRussell King	select ARCH_HAS_HOLES_MEMORYMODEL
771a0694861STony Lindgren	select ARCH_OMAP
77221f47fbcSAlexey Charkov	select ARCH_REQUIRE_GPIOLIB
773e9a91de7STony Prisk	select CLKDEV_LOOKUP
774cee37e50Sviresh kumar	select CLKSRC_MMIO
775b1b3f49cSRussell King	select GENERIC_CLOCKEVENTS
776a0694861STony Lindgren	select GENERIC_IRQ_CHIP
777a0694861STony Lindgren	select HAVE_IDE
778a0694861STony Lindgren	select IRQ_DOMAIN
779a0694861STony Lindgren	select NEED_MACH_IO_H if PCCARD
780a0694861STony Lindgren	select NEED_MACH_MEMORY_H
78121f47fbcSAlexey Charkov	help
782a0694861STony Lindgren	  Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
78302c981c0SBinghua Duan
7841da177e4SLinus Torvaldsendchoice
7851da177e4SLinus Torvalds
786387798b3SRob Herringmenu "Multiple platform selection"
787387798b3SRob Herring	depends on ARCH_MULTIPLATFORM
788387798b3SRob Herring
789387798b3SRob Herringcomment "CPU Core family selection"
790387798b3SRob Herring
791f8afae40SArnd Bergmannconfig ARCH_MULTI_V4
792f8afae40SArnd Bergmann	bool "ARMv4 based platforms (FA526)"
793f8afae40SArnd Bergmann	depends on !ARCH_MULTI_V6_V7
794f8afae40SArnd Bergmann	select ARCH_MULTI_V4_V5
795f8afae40SArnd Bergmann	select CPU_FA526
796f8afae40SArnd Bergmann
797387798b3SRob Herringconfig ARCH_MULTI_V4T
798387798b3SRob Herring	bool "ARMv4T based platforms (ARM720T, ARM920T, ...)"
799387798b3SRob Herring	depends on !ARCH_MULTI_V6_V7
800b1b3f49cSRussell King	select ARCH_MULTI_V4_V5
80124e860fbSArnd Bergmann	select CPU_ARM920T if !(CPU_ARM7TDMI || CPU_ARM720T || \
80224e860fbSArnd Bergmann		CPU_ARM740T || CPU_ARM9TDMI || CPU_ARM922T || \
80324e860fbSArnd Bergmann		CPU_ARM925T || CPU_ARM940T)
804387798b3SRob Herring
805387798b3SRob Herringconfig ARCH_MULTI_V5
806387798b3SRob Herring	bool "ARMv5 based platforms (ARM926T, XSCALE, PJ1, ...)"
807387798b3SRob Herring	depends on !ARCH_MULTI_V6_V7
808b1b3f49cSRussell King	select ARCH_MULTI_V4_V5
80912567bbdSAndrew Lunn	select CPU_ARM926T if !(CPU_ARM946E || CPU_ARM1020 || \
81024e860fbSArnd Bergmann		CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \
81124e860fbSArnd Bergmann		CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_FEROCEON)
812387798b3SRob Herring
813387798b3SRob Herringconfig ARCH_MULTI_V4_V5
814387798b3SRob Herring	bool
815387798b3SRob Herring
816387798b3SRob Herringconfig ARCH_MULTI_V6
8178dda05ccSStephen Boyd	bool "ARMv6 based platforms (ARM11)"
818387798b3SRob Herring	select ARCH_MULTI_V6_V7
81942f4754aSRob Herring	select CPU_V6K
820387798b3SRob Herring
821387798b3SRob Herringconfig ARCH_MULTI_V7
8228dda05ccSStephen Boyd	bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
823387798b3SRob Herring	default y
824387798b3SRob Herring	select ARCH_MULTI_V6_V7
825b1b3f49cSRussell King	select CPU_V7
82690bc8ac7SRob Herring	select HAVE_SMP
827387798b3SRob Herring
828387798b3SRob Herringconfig ARCH_MULTI_V6_V7
829387798b3SRob Herring	bool
8309352b05bSRob Herring	select MIGHT_HAVE_CACHE_L2X0
831387798b3SRob Herring
832387798b3SRob Herringconfig ARCH_MULTI_CPU_AUTO
833387798b3SRob Herring	def_bool !(ARCH_MULTI_V4 || ARCH_MULTI_V4T || ARCH_MULTI_V6_V7)
834387798b3SRob Herring	select ARCH_MULTI_V5
835387798b3SRob Herring
836387798b3SRob Herringendmenu
837387798b3SRob Herring
83805e2a3deSRob Herringconfig ARCH_VIRT
83905e2a3deSRob Herring	bool "Dummy Virtual Machine" if ARCH_MULTI_V7
8404b8b5f25SRob Herring	select ARM_AMBA
84105e2a3deSRob Herring	select ARM_GIC
84205e2a3deSRob Herring	select ARM_PSCI
8434b8b5f25SRob Herring	select HAVE_ARM_ARCH_TIMER
84405e2a3deSRob Herring
845ccf50e23SRussell King#
846ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname.  However, plat-*
847ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the
848ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source.
849ccf50e23SRussell King#
8503e93a22bSGregory CLEMENTsource "arch/arm/mach-mvebu/Kconfig"
8513e93a22bSGregory CLEMENT
85295b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig"
85395b8f20fSRussell King
8541d22924eSAnders Bergsource "arch/arm/mach-axxia/Kconfig"
8551d22924eSAnders Berg
8568ac49e04SChristian Daudtsource "arch/arm/mach-bcm/Kconfig"
8578ac49e04SChristian Daudt
8581c37fa10SSebastian Hesselbarthsource "arch/arm/mach-berlin/Kconfig"
8591c37fa10SSebastian Hesselbarth
8601da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
8611da177e4SLinus Torvalds
862d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig"
863d94f944eSAnton Vorontsov
86495b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig"
86595b8f20fSRussell King
86695b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig"
86795b8f20fSRussell King
868e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
869e7736d47SLennert Buytenhek
8701da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
8711da177e4SLinus Torvalds
87259d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig"
87359d3a193SPaulius Zaleckas
874387798b3SRob Herringsource "arch/arm/mach-highbank/Kconfig"
875387798b3SRob Herring
876389ee0c2SHaojian Zhuangsource "arch/arm/mach-hisi/Kconfig"
877389ee0c2SHaojian Zhuang
8781da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
8791da177e4SLinus Torvalds
8803f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig"
8813f7e5815SLennert Buytenhek
8823f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig"
8831da177e4SLinus Torvalds
884285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig"
885285f5fa7SDan Williams
8861da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
8871da177e4SLinus Torvalds
888828989adSSantosh Shilimkarsource "arch/arm/mach-keystone/Kconfig"
889828989adSSantosh Shilimkar
89095b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig"
89195b8f20fSRussell King
89295b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig"
89395b8f20fSRussell King
89417723fd3SJonas Jensensource "arch/arm/mach-moxart/Kconfig"
89517723fd3SJonas Jensen
896794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig"
897794d15b2SStanislav Samsonov
8983995eb82SShawn Guosource "arch/arm/mach-imx/Kconfig"
8991da177e4SLinus Torvalds
900f682a218SMatthias Bruggersource "arch/arm/mach-mediatek/Kconfig"
901f682a218SMatthias Brugger
9021d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig"
9031d3f33d5SShawn Guo
90495b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig"
90549cbe786SEric Miao
90695b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig"
90795b8f20fSRussell King
9089851ca57SDaniel Tangsource "arch/arm/mach-nspire/Kconfig"
9099851ca57SDaniel Tang
910d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
911d48af15eSTony Lindgren
912d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
9131da177e4SLinus Torvalds
9141dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
9151dbae815STony Lindgren
9169dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig"
917585cf175STzachi Perelstein
918387798b3SRob Herringsource "arch/arm/mach-picoxcell/Kconfig"
919387798b3SRob Herring
92095b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig"
92195b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig"
9221da177e4SLinus Torvalds
92395b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig"
92495b8f20fSRussell King
9258fc1b0f8SKumar Galasource "arch/arm/mach-qcom/Kconfig"
9268fc1b0f8SKumar Gala
92795b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig"
92895b8f20fSRussell King
929d63dc051SHeiko Stuebnersource "arch/arm/mach-rockchip/Kconfig"
930d63dc051SHeiko Stuebner
93195b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig"
932edabd38eSSaeed Bishara
933387798b3SRob Herringsource "arch/arm/mach-socfpga/Kconfig"
934387798b3SRob Herring
935a7ed099fSArnd Bergmannsource "arch/arm/mach-spear/Kconfig"
936a21765a7SBen Dooks
93765ebcc11SSrinivas Kandagatlasource "arch/arm/mach-sti/Kconfig"
93865ebcc11SSrinivas Kandagatla
93985fd6d63SKukjin Kimsource "arch/arm/mach-s3c24xx/Kconfig"
9401da177e4SLinus Torvalds
941431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig"
942a08ab637SBen Dooks
943170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig"
944170f4e42SKukjin Kim
94583014579SKukjin Kimsource "arch/arm/mach-exynos/Kconfig"
946e509b289SRob Herringsource "arch/arm/plat-samsung/Kconfig"
947cc0e72b8SChanghwan Youn
948882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig"
9491da177e4SLinus Torvalds
9503b52634fSMaxime Ripardsource "arch/arm/mach-sunxi/Kconfig"
9513b52634fSMaxime Ripard
952156a0997SBarry Songsource "arch/arm/mach-prima2/Kconfig"
953156a0997SBarry Song
954c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig"
955c5f80065SErik Gilling
95695b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig"
9571da177e4SLinus Torvalds
95895b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig"
9591da177e4SLinus Torvalds
9601da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
9611da177e4SLinus Torvalds
962ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig"
963420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig"
964ceade897SRussell King
9656f35f9a9STony Prisksource "arch/arm/mach-vt8500/Kconfig"
9666f35f9a9STony Prisk
9677ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig"
9687ec80ddfSwanzongshun
9699a45eb69SJosh Cartwrightsource "arch/arm/mach-zynq/Kconfig"
9709a45eb69SJosh Cartwright
9711da177e4SLinus Torvalds# Definitions to make life easier
9721da177e4SLinus Torvaldsconfig ARCH_ACORN
9731da177e4SLinus Torvalds	bool
9741da177e4SLinus Torvalds
9757ae1f7ecSLennert Buytenhekconfig PLAT_IOP
9767ae1f7ecSLennert Buytenhek	bool
977469d3044SMikael Pettersson	select GENERIC_CLOCKEVENTS
9787ae1f7ecSLennert Buytenhek
97969b02f6aSLennert Buytenhekconfig PLAT_ORION
98069b02f6aSLennert Buytenhek	bool
981bfe45e0bSRussell King	select CLKSRC_MMIO
982b1b3f49cSRussell King	select COMMON_CLK
983dc7ad3b3SRussell King	select GENERIC_IRQ_CHIP
984278b45b0SAndrew Lunn	select IRQ_DOMAIN
98569b02f6aSLennert Buytenhek
986abcda1dcSThomas Petazzoniconfig PLAT_ORION_LEGACY
987abcda1dcSThomas Petazzoni	bool
988abcda1dcSThomas Petazzoni	select PLAT_ORION
989abcda1dcSThomas Petazzoni
990bd5ce433SEric Miaoconfig PLAT_PXA
991bd5ce433SEric Miao	bool
992bd5ce433SEric Miao
993f4b8b319SRussell Kingconfig PLAT_VERSATILE
994f4b8b319SRussell King	bool
995f4b8b319SRussell King
996e3887714SRussell Kingconfig ARM_TIMER_SP804
997e3887714SRussell King	bool
998bfe45e0bSRussell King	select CLKSRC_MMIO
9997a0eca71SRob Herring	select CLKSRC_OF if OF
1000e3887714SRussell King
1001d9a1beaaSAlexandre Courbotsource "arch/arm/firmware/Kconfig"
1002d9a1beaaSAlexandre Courbot
10031da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
10041da177e4SLinus Torvalds
1005afe4b25eSLennert Buytenhekconfig IWMMXT
1006d93003e8SSebastian Hesselbarth	bool "Enable iWMMXt support"
1007d93003e8SSebastian Hesselbarth	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B
1008d93003e8SSebastian Hesselbarth	default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B
1009afe4b25eSLennert Buytenhek	help
1010afe4b25eSLennert Buytenhek	  Enable support for iWMMXt context switching at run time if
1011afe4b25eSLennert Buytenhek	  running on a CPU that supports it.
1012afe4b25eSLennert Buytenhek
101352108641Seric miaoconfig MULTI_IRQ_HANDLER
101452108641Seric miao	bool
101552108641Seric miao	help
101652108641Seric miao	  Allow each machine to specify it's own IRQ handler at run time.
101752108641Seric miao
10183b93e7b0SHyok S. Choiif !MMU
10193b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
10203b93e7b0SHyok S. Choiendif
10213b93e7b0SHyok S. Choi
10223e0a07f8SGregory CLEMENTconfig PJ4B_ERRATA_4742
10233e0a07f8SGregory CLEMENT	bool "PJ4B Errata 4742: IDLE Wake Up Commands can Cause the CPU Core to Cease Operation"
10243e0a07f8SGregory CLEMENT	depends on CPU_PJ4B && MACH_ARMADA_370
10253e0a07f8SGregory CLEMENT	default y
10263e0a07f8SGregory CLEMENT	help
10273e0a07f8SGregory CLEMENT	  When coming out of either a Wait for Interrupt (WFI) or a Wait for
10283e0a07f8SGregory CLEMENT	  Event (WFE) IDLE states, a specific timing sensitivity exists between
10293e0a07f8SGregory CLEMENT	  the retiring WFI/WFE instructions and the newly issued subsequent
10303e0a07f8SGregory CLEMENT	  instructions.  This sensitivity can result in a CPU hang scenario.
10313e0a07f8SGregory CLEMENT	  Workaround:
10323e0a07f8SGregory CLEMENT	  The software must insert either a Data Synchronization Barrier (DSB)
10333e0a07f8SGregory CLEMENT	  or Data Memory Barrier (DMB) command immediately after the WFI/WFE
10343e0a07f8SGregory CLEMENT	  instruction
10353e0a07f8SGregory CLEMENT
1036f0c4b8d6SWill Deaconconfig ARM_ERRATA_326103
1037f0c4b8d6SWill Deacon	bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory"
1038f0c4b8d6SWill Deacon	depends on CPU_V6
1039f0c4b8d6SWill Deacon	help
1040f0c4b8d6SWill Deacon	  Executing a SWP instruction to read-only memory does not set bit 11
1041f0c4b8d6SWill Deacon	  of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to
1042f0c4b8d6SWill Deacon	  treat the access as a read, preventing a COW from occurring and
1043f0c4b8d6SWill Deacon	  causing the faulting task to livelock.
1044f0c4b8d6SWill Deacon
10459cba3cccSCatalin Marinasconfig ARM_ERRATA_411920
10469cba3cccSCatalin Marinas	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1047e399b1a4SRussell King	depends on CPU_V6 || CPU_V6K
10489cba3cccSCatalin Marinas	help
10499cba3cccSCatalin Marinas	  Invalidation of the Instruction Cache operation can
10509cba3cccSCatalin Marinas	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
10519cba3cccSCatalin Marinas	  It does not affect the MPCore. This option enables the ARM Ltd.
10529cba3cccSCatalin Marinas	  recommended workaround.
10539cba3cccSCatalin Marinas
10547ce236fcSCatalin Marinasconfig ARM_ERRATA_430973
10557ce236fcSCatalin Marinas	bool "ARM errata: Stale prediction on replaced interworking branch"
10567ce236fcSCatalin Marinas	depends on CPU_V7
10577ce236fcSCatalin Marinas	help
10587ce236fcSCatalin Marinas	  This option enables the workaround for the 430973 Cortex-A8
10597ce236fcSCatalin Marinas	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
10607ce236fcSCatalin Marinas	  interworking branch is replaced with another code sequence at the
10617ce236fcSCatalin Marinas	  same virtual address, whether due to self-modifying code or virtual
10627ce236fcSCatalin Marinas	  to physical address re-mapping, Cortex-A8 does not recover from the
10637ce236fcSCatalin Marinas	  stale interworking branch prediction. This results in Cortex-A8
10647ce236fcSCatalin Marinas	  executing the new code sequence in the incorrect ARM or Thumb state.
10657ce236fcSCatalin Marinas	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
10667ce236fcSCatalin Marinas	  and also flushes the branch target cache at every context switch.
10677ce236fcSCatalin Marinas	  Note that setting specific bits in the ACTLR register may not be
10687ce236fcSCatalin Marinas	  available in non-secure mode.
10697ce236fcSCatalin Marinas
1070855c551fSCatalin Marinasconfig ARM_ERRATA_458693
1071855c551fSCatalin Marinas	bool "ARM errata: Processor deadlock when a false hazard is created"
1072855c551fSCatalin Marinas	depends on CPU_V7
107362e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
1074855c551fSCatalin Marinas	help
1075855c551fSCatalin Marinas	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1076855c551fSCatalin Marinas	  erratum. For very specific sequences of memory operations, it is
1077855c551fSCatalin Marinas	  possible for a hazard condition intended for a cache line to instead
1078855c551fSCatalin Marinas	  be incorrectly associated with a different cache line. This false
1079855c551fSCatalin Marinas	  hazard might then cause a processor deadlock. The workaround enables
1080855c551fSCatalin Marinas	  the L1 caching of the NEON accesses and disables the PLD instruction
1081855c551fSCatalin Marinas	  in the ACTLR register. Note that setting specific bits in the ACTLR
1082855c551fSCatalin Marinas	  register may not be available in non-secure mode.
1083855c551fSCatalin Marinas
10840516e464SCatalin Marinasconfig ARM_ERRATA_460075
10850516e464SCatalin Marinas	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
10860516e464SCatalin Marinas	depends on CPU_V7
108762e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
10880516e464SCatalin Marinas	help
10890516e464SCatalin Marinas	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
10900516e464SCatalin Marinas	  erratum. Any asynchronous access to the L2 cache may encounter a
10910516e464SCatalin Marinas	  situation in which recent store transactions to the L2 cache are lost
10920516e464SCatalin Marinas	  and overwritten with stale memory contents from external memory. The
10930516e464SCatalin Marinas	  workaround disables the write-allocate mode for the L2 cache via the
10940516e464SCatalin Marinas	  ACTLR register. Note that setting specific bits in the ACTLR register
10950516e464SCatalin Marinas	  may not be available in non-secure mode.
10960516e464SCatalin Marinas
10979f05027cSWill Deaconconfig ARM_ERRATA_742230
10989f05027cSWill Deacon	bool "ARM errata: DMB operation may be faulty"
10999f05027cSWill Deacon	depends on CPU_V7 && SMP
110062e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
11019f05027cSWill Deacon	help
11029f05027cSWill Deacon	  This option enables the workaround for the 742230 Cortex-A9
11039f05027cSWill Deacon	  (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
11049f05027cSWill Deacon	  between two write operations may not ensure the correct visibility
11059f05027cSWill Deacon	  ordering of the two writes. This workaround sets a specific bit in
11069f05027cSWill Deacon	  the diagnostic register of the Cortex-A9 which causes the DMB
11079f05027cSWill Deacon	  instruction to behave as a DSB, ensuring the correct behaviour of
11089f05027cSWill Deacon	  the two writes.
11099f05027cSWill Deacon
1110a672e99bSWill Deaconconfig ARM_ERRATA_742231
1111a672e99bSWill Deacon	bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1112a672e99bSWill Deacon	depends on CPU_V7 && SMP
111362e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
1114a672e99bSWill Deacon	help
1115a672e99bSWill Deacon	  This option enables the workaround for the 742231 Cortex-A9
1116a672e99bSWill Deacon	  (r2p0..r2p2) erratum. Under certain conditions, specific to the
1117a672e99bSWill Deacon	  Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1118a672e99bSWill Deacon	  accessing some data located in the same cache line, may get corrupted
1119a672e99bSWill Deacon	  data due to bad handling of the address hazard when the line gets
1120a672e99bSWill Deacon	  replaced from one of the CPUs at the same time as another CPU is
1121a672e99bSWill Deacon	  accessing it. This workaround sets specific bits in the diagnostic
1122a672e99bSWill Deacon	  register of the Cortex-A9 which reduces the linefill issuing
1123a672e99bSWill Deacon	  capabilities of the processor.
1124a672e99bSWill Deacon
112569155794SJon Medhurstconfig ARM_ERRATA_643719
112669155794SJon Medhurst	bool "ARM errata: LoUIS bit field in CLIDR register is incorrect"
112769155794SJon Medhurst	depends on CPU_V7 && SMP
112869155794SJon Medhurst	help
112969155794SJon Medhurst	  This option enables the workaround for the 643719 Cortex-A9 (prior to
113069155794SJon Medhurst	  r1p0) erratum. On affected cores the LoUIS bit field of the CLIDR
113169155794SJon Medhurst	  register returns zero when it should return one. The workaround
113269155794SJon Medhurst	  corrects this value, ensuring cache maintenance operations which use
113369155794SJon Medhurst	  it behave as intended and avoiding data corruption.
113469155794SJon Medhurst
1135cdf357f1SWill Deaconconfig ARM_ERRATA_720789
1136cdf357f1SWill Deacon	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1137e66dc745SDave Martin	depends on CPU_V7
1138cdf357f1SWill Deacon	help
1139cdf357f1SWill Deacon	  This option enables the workaround for the 720789 Cortex-A9 (prior to
1140cdf357f1SWill Deacon	  r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1141cdf357f1SWill Deacon	  broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1142cdf357f1SWill Deacon	  As a consequence of this erratum, some TLB entries which should be
1143cdf357f1SWill Deacon	  invalidated are not, resulting in an incoherency in the system page
1144cdf357f1SWill Deacon	  tables. The workaround changes the TLB flushing routines to invalidate
1145cdf357f1SWill Deacon	  entries regardless of the ASID.
1146475d92fcSWill Deacon
1147475d92fcSWill Deaconconfig ARM_ERRATA_743622
1148475d92fcSWill Deacon	bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1149475d92fcSWill Deacon	depends on CPU_V7
115062e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
1151475d92fcSWill Deacon	help
1152475d92fcSWill Deacon	  This option enables the workaround for the 743622 Cortex-A9
1153efbc74acSWill Deacon	  (r2p*) erratum. Under very rare conditions, a faulty
1154475d92fcSWill Deacon	  optimisation in the Cortex-A9 Store Buffer may lead to data
1155475d92fcSWill Deacon	  corruption. This workaround sets a specific bit in the diagnostic
1156475d92fcSWill Deacon	  register of the Cortex-A9 which disables the Store Buffer
1157475d92fcSWill Deacon	  optimisation, preventing the defect from occurring. This has no
1158475d92fcSWill Deacon	  visible impact on the overall performance or power consumption of the
1159475d92fcSWill Deacon	  processor.
1160475d92fcSWill Deacon
11619a27c27cSWill Deaconconfig ARM_ERRATA_751472
11629a27c27cSWill Deacon	bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
1163ba90c516SDave Martin	depends on CPU_V7
116462e4d357SRob Herring	depends on !ARCH_MULTIPLATFORM
11659a27c27cSWill Deacon	help
11669a27c27cSWill Deacon	  This option enables the workaround for the 751472 Cortex-A9 (prior
11679a27c27cSWill Deacon	  to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
11689a27c27cSWill Deacon	  completion of a following broadcasted operation if the second
11699a27c27cSWill Deacon	  operation is received by a CPU before the ICIALLUIS has completed,
11709a27c27cSWill Deacon	  potentially leading to corrupted entries in the cache or TLB.
11719a27c27cSWill Deacon
1172fcbdc5feSWill Deaconconfig ARM_ERRATA_754322
1173fcbdc5feSWill Deacon	bool "ARM errata: possible faulty MMU translations following an ASID switch"
1174fcbdc5feSWill Deacon	depends on CPU_V7
1175fcbdc5feSWill Deacon	help
1176fcbdc5feSWill Deacon	  This option enables the workaround for the 754322 Cortex-A9 (r2p*,
1177fcbdc5feSWill Deacon	  r3p*) erratum. A speculative memory access may cause a page table walk
1178fcbdc5feSWill Deacon	  which starts prior to an ASID switch but completes afterwards. This
1179fcbdc5feSWill Deacon	  can populate the micro-TLB with a stale entry which may be hit with
1180fcbdc5feSWill Deacon	  the new ASID. This workaround places two dsb instructions in the mm
1181fcbdc5feSWill Deacon	  switching code so that no page table walks can cross the ASID switch.
1182fcbdc5feSWill Deacon
11835dab26afSWill Deaconconfig ARM_ERRATA_754327
11845dab26afSWill Deacon	bool "ARM errata: no automatic Store Buffer drain"
11855dab26afSWill Deacon	depends on CPU_V7 && SMP
11865dab26afSWill Deacon	help
11875dab26afSWill Deacon	  This option enables the workaround for the 754327 Cortex-A9 (prior to
11885dab26afSWill Deacon	  r2p0) erratum. The Store Buffer does not have any automatic draining
11895dab26afSWill Deacon	  mechanism and therefore a livelock may occur if an external agent
11905dab26afSWill Deacon	  continuously polls a memory location waiting to observe an update.
11915dab26afSWill Deacon	  This workaround defines cpu_relax() as smp_mb(), preventing correctly
11925dab26afSWill Deacon	  written polling loops from denying visibility of updates to memory.
11935dab26afSWill Deacon
1194145e10e1SCatalin Marinasconfig ARM_ERRATA_364296
1195145e10e1SCatalin Marinas	bool "ARM errata: Possible cache data corruption with hit-under-miss enabled"
1196fd832478SFabio Estevam	depends on CPU_V6
1197145e10e1SCatalin Marinas	help
1198145e10e1SCatalin Marinas	  This options enables the workaround for the 364296 ARM1136
1199145e10e1SCatalin Marinas	  r0p2 erratum (possible cache data corruption with
1200145e10e1SCatalin Marinas	  hit-under-miss enabled). It sets the undocumented bit 31 in
1201145e10e1SCatalin Marinas	  the auxiliary control register and the FI bit in the control
1202145e10e1SCatalin Marinas	  register, thus disabling hit-under-miss without putting the
1203145e10e1SCatalin Marinas	  processor into full low interrupt latency mode. ARM11MPCore
1204145e10e1SCatalin Marinas	  is not affected.
1205145e10e1SCatalin Marinas
1206f630c1bdSWill Deaconconfig ARM_ERRATA_764369
1207f630c1bdSWill Deacon	bool "ARM errata: Data cache line maintenance operation by MVA may not succeed"
1208f630c1bdSWill Deacon	depends on CPU_V7 && SMP
1209f630c1bdSWill Deacon	help
1210f630c1bdSWill Deacon	  This option enables the workaround for erratum 764369
1211f630c1bdSWill Deacon	  affecting Cortex-A9 MPCore with two or more processors (all
1212f630c1bdSWill Deacon	  current revisions). Under certain timing circumstances, a data
1213f630c1bdSWill Deacon	  cache line maintenance operation by MVA targeting an Inner
1214f630c1bdSWill Deacon	  Shareable memory region may fail to proceed up to either the
1215f630c1bdSWill Deacon	  Point of Coherency or to the Point of Unification of the
1216f630c1bdSWill Deacon	  system. This workaround adds a DSB instruction before the
1217f630c1bdSWill Deacon	  relevant cache maintenance functions and sets a specific bit
1218f630c1bdSWill Deacon	  in the diagnostic control register of the SCU.
1219f630c1bdSWill Deacon
12207253b85cSSimon Hormanconfig ARM_ERRATA_775420
12217253b85cSSimon Horman       bool "ARM errata: A data cache maintenance operation which aborts, might lead to deadlock"
12227253b85cSSimon Horman       depends on CPU_V7
12237253b85cSSimon Horman       help
12247253b85cSSimon Horman	 This option enables the workaround for the 775420 Cortex-A9 (r2p2,
12257253b85cSSimon Horman	 r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
12267253b85cSSimon Horman	 operation aborts with MMU exception, it might cause the processor
12277253b85cSSimon Horman	 to deadlock. This workaround puts DSB before executing ISB if
12287253b85cSSimon Horman	 an abort may occur on cache maintenance.
12297253b85cSSimon Horman
123093dc6887SCatalin Marinasconfig ARM_ERRATA_798181
123193dc6887SCatalin Marinas	bool "ARM errata: TLBI/DSB failure on Cortex-A15"
123293dc6887SCatalin Marinas	depends on CPU_V7 && SMP
123393dc6887SCatalin Marinas	help
123493dc6887SCatalin Marinas	  On Cortex-A15 (r0p0..r3p2) the TLBI*IS/DSB operations are not
123593dc6887SCatalin Marinas	  adequately shooting down all use of the old entries. This
123693dc6887SCatalin Marinas	  option enables the Linux kernel workaround for this erratum
123793dc6887SCatalin Marinas	  which sends an IPI to the CPUs that are running the same ASID
123893dc6887SCatalin Marinas	  as the one being invalidated.
123993dc6887SCatalin Marinas
124084b6504fSWill Deaconconfig ARM_ERRATA_773022
124184b6504fSWill Deacon	bool "ARM errata: incorrect instructions may be executed from loop buffer"
124284b6504fSWill Deacon	depends on CPU_V7
124384b6504fSWill Deacon	help
124484b6504fSWill Deacon	  This option enables the workaround for the 773022 Cortex-A15
124584b6504fSWill Deacon	  (up to r0p4) erratum. In certain rare sequences of code, the
124684b6504fSWill Deacon	  loop buffer may deliver incorrect instructions. This
124784b6504fSWill Deacon	  workaround disables the loop buffer to avoid the erratum.
124884b6504fSWill Deacon
12491da177e4SLinus Torvaldsendmenu
12501da177e4SLinus Torvalds
12511da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
12521da177e4SLinus Torvalds
12531da177e4SLinus Torvaldsmenu "Bus support"
12541da177e4SLinus Torvalds
12551da177e4SLinus Torvaldsconfig ARM_AMBA
12561da177e4SLinus Torvalds	bool
12571da177e4SLinus Torvalds
12581da177e4SLinus Torvaldsconfig ISA
12591da177e4SLinus Torvalds	bool
12601da177e4SLinus Torvalds	help
12611da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
12621da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
12631da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
12641da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
12651da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
12661da177e4SLinus Torvalds
1267065909b9SRussell King# Select ISA DMA controller support
12681da177e4SLinus Torvaldsconfig ISA_DMA
12691da177e4SLinus Torvalds	bool
1270065909b9SRussell King	select ISA_DMA_API
12711da177e4SLinus Torvalds
1272065909b9SRussell King# Select ISA DMA interface
12735cae841bSAl Viroconfig ISA_DMA_API
12745cae841bSAl Viro	bool
12755cae841bSAl Viro
12761da177e4SLinus Torvaldsconfig PCI
12770b05da72SHans Ulli Kroll	bool "PCI support" if MIGHT_HAVE_PCI
12781da177e4SLinus Torvalds	help
12791da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
12801da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
12811da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
12821da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
12831da177e4SLinus Torvalds
128452882173SAnton Vorontsovconfig PCI_DOMAINS
128552882173SAnton Vorontsov	bool
128652882173SAnton Vorontsov	depends on PCI
128752882173SAnton Vorontsov
1288b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE
1289b080ac8aSMarcelo Roberto Jimenez	bool "BSE nanoEngine PCI support"
1290b080ac8aSMarcelo Roberto Jimenez	depends on SA1100_NANOENGINE
1291b080ac8aSMarcelo Roberto Jimenez	help
1292b080ac8aSMarcelo Roberto Jimenez	  Enable PCI on the BSE nanoEngine board.
1293b080ac8aSMarcelo Roberto Jimenez
129436e23590SMatthew Wilcoxconfig PCI_SYSCALL
129536e23590SMatthew Wilcox	def_bool PCI
129636e23590SMatthew Wilcox
1297a0113a99SMike Rapoportconfig PCI_HOST_ITE8152
1298a0113a99SMike Rapoport	bool
1299a0113a99SMike Rapoport	depends on PCI && MACH_ARMCORE
1300a0113a99SMike Rapoport	default y
1301a0113a99SMike Rapoport	select DMABOUNCE
1302a0113a99SMike Rapoport
13031da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
13043f06d157SJingoo Hansource "drivers/pci/pcie/Kconfig"
13051da177e4SLinus Torvalds
13061da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
13071da177e4SLinus Torvalds
13081da177e4SLinus Torvaldsendmenu
13091da177e4SLinus Torvalds
13101da177e4SLinus Torvaldsmenu "Kernel Features"
13111da177e4SLinus Torvalds
13123b55658aSDave Martinconfig HAVE_SMP
13133b55658aSDave Martin	bool
13143b55658aSDave Martin	help
13153b55658aSDave Martin	  This option should be selected by machines which have an SMP-
13163b55658aSDave Martin	  capable CPU.
13173b55658aSDave Martin
13183b55658aSDave Martin	  The only effect of this option is to make the SMP-related
13193b55658aSDave Martin	  options available to the user for configuration.
13203b55658aSDave Martin
13211da177e4SLinus Torvaldsconfig SMP
1322bb2d8130SRussell King	bool "Symmetric Multi-Processing"
1323fbb4ddacSRussell King	depends on CPU_V6K || CPU_V7
1324bc28248eSRussell King	depends on GENERIC_CLOCKEVENTS
13253b55658aSDave Martin	depends on HAVE_SMP
1326801bb21cSJonathan Austin	depends on MMU || ARM_MPU
13271da177e4SLinus Torvalds	help
13281da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
13294a474157SRobert Graffham	  a system with only one CPU, say N. If you have a system with more
13304a474157SRobert Graffham	  than one CPU, say Y.
13311da177e4SLinus Torvalds
13324a474157SRobert Graffham	  If you say N here, the kernel will run on uni- and multiprocessor
13331da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
13344a474157SRobert Graffham	  you say Y here, the kernel will run on many, but not all,
13354a474157SRobert Graffham	  uniprocessor machines. On a uniprocessor machine, the kernel
13364a474157SRobert Graffham	  will run faster if you say N here.
13371da177e4SLinus Torvalds
1338395cf969SPaul Bolle	  See also <file:Documentation/x86/i386/IO-APIC.txt>,
13391da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
134050a23e6eSJustin P. Mattock	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
13411da177e4SLinus Torvalds
13421da177e4SLinus Torvalds	  If you don't know what to do here, say N.
13431da177e4SLinus Torvalds
1344f00ec48fSRussell Kingconfig SMP_ON_UP
1345f00ec48fSRussell King	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1346801bb21cSJonathan Austin	depends on SMP && !XIP_KERNEL && MMU
1347f00ec48fSRussell King	default y
1348f00ec48fSRussell King	help
1349f00ec48fSRussell King	  SMP kernels contain instructions which fail on non-SMP processors.
1350f00ec48fSRussell King	  Enabling this option allows the kernel to modify itself to make
1351f00ec48fSRussell King	  these instructions safe.  Disabling it allows about 1K of space
1352f00ec48fSRussell King	  savings.
1353f00ec48fSRussell King
1354f00ec48fSRussell King	  If you don't know what to do here, say Y.
1355f00ec48fSRussell King
1356c9018aabSVincent Guittotconfig ARM_CPU_TOPOLOGY
1357c9018aabSVincent Guittot	bool "Support cpu topology definition"
1358c9018aabSVincent Guittot	depends on SMP && CPU_V7
1359c9018aabSVincent Guittot	default y
1360c9018aabSVincent Guittot	help
1361c9018aabSVincent Guittot	  Support ARM cpu topology definition. The MPIDR register defines
1362c9018aabSVincent Guittot	  affinity between processors which is then used to describe the cpu
1363c9018aabSVincent Guittot	  topology of an ARM System.
1364c9018aabSVincent Guittot
1365c9018aabSVincent Guittotconfig SCHED_MC
1366c9018aabSVincent Guittot	bool "Multi-core scheduler support"
1367c9018aabSVincent Guittot	depends on ARM_CPU_TOPOLOGY
1368c9018aabSVincent Guittot	help
1369c9018aabSVincent Guittot	  Multi-core scheduler support improves the CPU scheduler's decision
1370c9018aabSVincent Guittot	  making when dealing with multi-core CPU chips at a cost of slightly
1371c9018aabSVincent Guittot	  increased overhead in some places. If unsure say N here.
1372c9018aabSVincent Guittot
1373c9018aabSVincent Guittotconfig SCHED_SMT
1374c9018aabSVincent Guittot	bool "SMT scheduler support"
1375c9018aabSVincent Guittot	depends on ARM_CPU_TOPOLOGY
1376c9018aabSVincent Guittot	help
1377c9018aabSVincent Guittot	  Improves the CPU scheduler's decision making when dealing with
1378c9018aabSVincent Guittot	  MultiThreading at a cost of slightly increased overhead in some
1379c9018aabSVincent Guittot	  places. If unsure say N here.
1380c9018aabSVincent Guittot
1381a8cbcd92SRussell Kingconfig HAVE_ARM_SCU
1382a8cbcd92SRussell King	bool
1383a8cbcd92SRussell King	help
1384a8cbcd92SRussell King	  This option enables support for the ARM system coherency unit
1385a8cbcd92SRussell King
13868a4da6e3SMark Rutlandconfig HAVE_ARM_ARCH_TIMER
1387022c03a2SMarc Zyngier	bool "Architected timer support"
1388022c03a2SMarc Zyngier	depends on CPU_V7
13898a4da6e3SMark Rutland	select ARM_ARCH_TIMER
13900c403462SWill Deacon	select GENERIC_CLOCKEVENTS
1391022c03a2SMarc Zyngier	help
1392022c03a2SMarc Zyngier	  This option enables support for the ARM architected timer
1393022c03a2SMarc Zyngier
1394f32f4ce2SRussell Kingconfig HAVE_ARM_TWD
1395f32f4ce2SRussell King	bool
1396f32f4ce2SRussell King	depends on SMP
1397da4a686aSRob Herring	select CLKSRC_OF if OF
1398f32f4ce2SRussell King	help
1399f32f4ce2SRussell King	  This options enables support for the ARM timer and watchdog unit
1400f32f4ce2SRussell King
1401e8db288eSNicolas Pitreconfig MCPM
1402e8db288eSNicolas Pitre	bool "Multi-Cluster Power Management"
1403e8db288eSNicolas Pitre	depends on CPU_V7 && SMP
1404e8db288eSNicolas Pitre	help
1405e8db288eSNicolas Pitre	  This option provides the common power management infrastructure
1406e8db288eSNicolas Pitre	  for (multi-)cluster based systems, such as big.LITTLE based
1407e8db288eSNicolas Pitre	  systems.
1408e8db288eSNicolas Pitre
14091c33be57SNicolas Pitreconfig BIG_LITTLE
14101c33be57SNicolas Pitre	bool "big.LITTLE support (Experimental)"
14111c33be57SNicolas Pitre	depends on CPU_V7 && SMP
14121c33be57SNicolas Pitre	select MCPM
14131c33be57SNicolas Pitre	help
14141c33be57SNicolas Pitre	  This option enables support selections for the big.LITTLE
14151c33be57SNicolas Pitre	  system architecture.
14161c33be57SNicolas Pitre
14171c33be57SNicolas Pitreconfig BL_SWITCHER
14181c33be57SNicolas Pitre	bool "big.LITTLE switcher support"
14191c33be57SNicolas Pitre	depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
14201c33be57SNicolas Pitre	select ARM_CPU_SUSPEND
142151aaf81fSRussell King	select CPU_PM
14221c33be57SNicolas Pitre	help
14231c33be57SNicolas Pitre	  The big.LITTLE "switcher" provides the core functionality to
14241c33be57SNicolas Pitre	  transparently handle transition between a cluster of A15's
14251c33be57SNicolas Pitre	  and a cluster of A7's in a big.LITTLE system.
14261c33be57SNicolas Pitre
1427b22537c6SNicolas Pitreconfig BL_SWITCHER_DUMMY_IF
1428b22537c6SNicolas Pitre	tristate "Simple big.LITTLE switcher user interface"
1429b22537c6SNicolas Pitre	depends on BL_SWITCHER && DEBUG_KERNEL
1430b22537c6SNicolas Pitre	help
1431b22537c6SNicolas Pitre	  This is a simple and dummy char dev interface to control
1432b22537c6SNicolas Pitre	  the big.LITTLE switcher core code.  It is meant for
1433b22537c6SNicolas Pitre	  debugging purposes only.
1434b22537c6SNicolas Pitre
14358d5796d2SLennert Buytenhekchoice
14368d5796d2SLennert Buytenhek	prompt "Memory split"
1437006fa259SRussell King	depends on MMU
14388d5796d2SLennert Buytenhek	default VMSPLIT_3G
14398d5796d2SLennert Buytenhek	help
14408d5796d2SLennert Buytenhek	  Select the desired split between kernel and user memory.
14418d5796d2SLennert Buytenhek
14428d5796d2SLennert Buytenhek	  If you are not absolutely sure what you are doing, leave this
14438d5796d2SLennert Buytenhek	  option alone!
14448d5796d2SLennert Buytenhek
14458d5796d2SLennert Buytenhek	config VMSPLIT_3G
14468d5796d2SLennert Buytenhek		bool "3G/1G user/kernel split"
14478d5796d2SLennert Buytenhek	config VMSPLIT_2G
14488d5796d2SLennert Buytenhek		bool "2G/2G user/kernel split"
14498d5796d2SLennert Buytenhek	config VMSPLIT_1G
14508d5796d2SLennert Buytenhek		bool "1G/3G user/kernel split"
14518d5796d2SLennert Buytenhekendchoice
14528d5796d2SLennert Buytenhek
14538d5796d2SLennert Buytenhekconfig PAGE_OFFSET
14548d5796d2SLennert Buytenhek	hex
1455006fa259SRussell King	default PHYS_OFFSET if !MMU
14568d5796d2SLennert Buytenhek	default 0x40000000 if VMSPLIT_1G
14578d5796d2SLennert Buytenhek	default 0x80000000 if VMSPLIT_2G
14588d5796d2SLennert Buytenhek	default 0xC0000000
14598d5796d2SLennert Buytenhek
14601da177e4SLinus Torvaldsconfig NR_CPUS
14611da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
14621da177e4SLinus Torvalds	range 2 32
14631da177e4SLinus Torvalds	depends on SMP
14641da177e4SLinus Torvalds	default "4"
14651da177e4SLinus Torvalds
1466a054a811SRussell Kingconfig HOTPLUG_CPU
146700b7dedeSRussell King	bool "Support for hot-pluggable CPUs"
146840b31360SStephen Rothwell	depends on SMP
1469a054a811SRussell King	help
1470a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
1471a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
1472a054a811SRussell King
14732bdd424fSWill Deaconconfig ARM_PSCI
14742bdd424fSWill Deacon	bool "Support for the ARM Power State Coordination Interface (PSCI)"
14752bdd424fSWill Deacon	depends on CPU_V7
14762bdd424fSWill Deacon	help
14772bdd424fSWill Deacon	  Say Y here if you want Linux to communicate with system firmware
14782bdd424fSWill Deacon	  implementing the PSCI specification for CPU-centric power
14792bdd424fSWill Deacon	  management operations described in ARM document number ARM DEN
14802bdd424fSWill Deacon	  0022A ("Power State Coordination Interface System Software on
14812bdd424fSWill Deacon	  ARM processors").
14822bdd424fSWill Deacon
14832a6ad871SMaxime Ripard# The GPIO number here must be sorted by descending number. In case of
14842a6ad871SMaxime Ripard# a multiplatform kernel, we just want the highest value required by the
14852a6ad871SMaxime Ripard# selected platforms.
148644986ab0SPeter De Schrijver (NVIDIA)config ARCH_NR_GPIO
148744986ab0SPeter De Schrijver (NVIDIA)	int
14883dea19e8SPeter De Schrijver (NVIDIA)	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
1489aa42587aSTomasz Figa	default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
1490aa42587aSTomasz Figa		SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
1491eb171a99SBoris BREZILLON	default 416 if ARCH_SUNXI
149206b851e5SOlof Johansson	default 392 if ARCH_U8500
149301bb914cSTony Prisk	default 352 if ARCH_VT8500
14947b5da4c3SHeiko Stuebner	default 288 if ARCH_ROCKCHIP
14952a6ad871SMaxime Ripard	default 264 if MACH_H4700
149644986ab0SPeter De Schrijver (NVIDIA)	default 0
149744986ab0SPeter De Schrijver (NVIDIA)	help
149844986ab0SPeter De Schrijver (NVIDIA)	  Maximum number of GPIOs in the system.
149944986ab0SPeter De Schrijver (NVIDIA)
150044986ab0SPeter De Schrijver (NVIDIA)	  If unsure, leave the default value.
150144986ab0SPeter De Schrijver (NVIDIA)
1502d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt
15031da177e4SLinus Torvalds
1504c9218b16SRussell Kingconfig HZ_FIXED
1505f8065813SRussell King	int
1506070b8b43SKukjin Kim	default 200 if ARCH_EBSA110 || ARCH_S3C24XX || \
1507a73ddc61SKukjin Kim		ARCH_S5PV210 || ARCH_EXYNOS4
15085248c657SDavid Brownell	default AT91_TIMER_HZ if ARCH_AT91
1509bf98c1eaSLaurent Pinchart	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE_LEGACY
151047d84682SRussell King	default 0
1511c9218b16SRussell King
1512c9218b16SRussell Kingchoice
151347d84682SRussell King	depends on HZ_FIXED = 0
1514c9218b16SRussell King	prompt "Timer frequency"
1515c9218b16SRussell King
1516c9218b16SRussell Kingconfig HZ_100
1517c9218b16SRussell King	bool "100 Hz"
1518c9218b16SRussell King
1519c9218b16SRussell Kingconfig HZ_200
1520c9218b16SRussell King	bool "200 Hz"
1521c9218b16SRussell King
1522c9218b16SRussell Kingconfig HZ_250
1523c9218b16SRussell King	bool "250 Hz"
1524c9218b16SRussell King
1525c9218b16SRussell Kingconfig HZ_300
1526c9218b16SRussell King	bool "300 Hz"
1527c9218b16SRussell King
1528c9218b16SRussell Kingconfig HZ_500
1529c9218b16SRussell King	bool "500 Hz"
1530c9218b16SRussell King
1531c9218b16SRussell Kingconfig HZ_1000
1532c9218b16SRussell King	bool "1000 Hz"
1533c9218b16SRussell King
1534c9218b16SRussell Kingendchoice
1535c9218b16SRussell King
1536c9218b16SRussell Kingconfig HZ
1537c9218b16SRussell King	int
153847d84682SRussell King	default HZ_FIXED if HZ_FIXED != 0
1539c9218b16SRussell King	default 100 if HZ_100
1540c9218b16SRussell King	default 200 if HZ_200
1541c9218b16SRussell King	default 250 if HZ_250
1542c9218b16SRussell King	default 300 if HZ_300
1543c9218b16SRussell King	default 500 if HZ_500
1544c9218b16SRussell King	default 1000
1545c9218b16SRussell King
1546c9218b16SRussell Kingconfig SCHED_HRTICK
1547c9218b16SRussell King	def_bool HIGH_RES_TIMERS
1548f8065813SRussell King
154916c79651SCatalin Marinasconfig THUMB2_KERNEL
1550bc7dea00SUwe Kleine-König	bool "Compile the kernel in Thumb-2 mode" if !CPU_THUMBONLY
15514477ca45SUwe Kleine-König	depends on (CPU_V7 || CPU_V7M) && !CPU_V6 && !CPU_V6K
1552bc7dea00SUwe Kleine-König	default y if CPU_THUMBONLY
155316c79651SCatalin Marinas	select AEABI
155416c79651SCatalin Marinas	select ARM_ASM_UNIFIED
155589bace65SArnd Bergmann	select ARM_UNWIND
155616c79651SCatalin Marinas	help
155716c79651SCatalin Marinas	  By enabling this option, the kernel will be compiled in
155816c79651SCatalin Marinas	  Thumb-2 mode. A compiler/assembler that understand the unified
155916c79651SCatalin Marinas	  ARM-Thumb syntax is needed.
156016c79651SCatalin Marinas
156116c79651SCatalin Marinas	  If unsure, say N.
156216c79651SCatalin Marinas
15636f685c5cSDave Martinconfig THUMB2_AVOID_R_ARM_THM_JUMP11
15646f685c5cSDave Martin	bool "Work around buggy Thumb-2 short branch relocations in gas"
15656f685c5cSDave Martin	depends on THUMB2_KERNEL && MODULES
15666f685c5cSDave Martin	default y
15676f685c5cSDave Martin	help
15686f685c5cSDave Martin	  Various binutils versions can resolve Thumb-2 branches to
15696f685c5cSDave Martin	  locally-defined, preemptible global symbols as short-range "b.n"
15706f685c5cSDave Martin	  branch instructions.
15716f685c5cSDave Martin
15726f685c5cSDave Martin	  This is a problem, because there's no guarantee the final
15736f685c5cSDave Martin	  destination of the symbol, or any candidate locations for a
15746f685c5cSDave Martin	  trampoline, are within range of the branch.  For this reason, the
15756f685c5cSDave Martin	  kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
15766f685c5cSDave Martin	  relocation in modules at all, and it makes little sense to add
15776f685c5cSDave Martin	  support.
15786f685c5cSDave Martin
15796f685c5cSDave Martin	  The symptom is that the kernel fails with an "unsupported
15806f685c5cSDave Martin	  relocation" error when loading some modules.
15816f685c5cSDave Martin
15826f685c5cSDave Martin	  Until fixed tools are available, passing
15836f685c5cSDave Martin	  -fno-optimize-sibling-calls to gcc should prevent gcc generating
15846f685c5cSDave Martin	  code which hits this problem, at the cost of a bit of extra runtime
15856f685c5cSDave Martin	  stack usage in some cases.
15866f685c5cSDave Martin
15876f685c5cSDave Martin	  The problem is described in more detail at:
15886f685c5cSDave Martin	      https://bugs.launchpad.net/binutils-linaro/+bug/725126
15896f685c5cSDave Martin
15906f685c5cSDave Martin	  Only Thumb-2 kernels are affected.
15916f685c5cSDave Martin
15926f685c5cSDave Martin	  Unless you are sure your tools don't have this problem, say Y.
15936f685c5cSDave Martin
15940becb088SCatalin Marinasconfig ARM_ASM_UNIFIED
15950becb088SCatalin Marinas	bool
15960becb088SCatalin Marinas
1597704bdda0SNicolas Pitreconfig AEABI
1598704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
1599704bdda0SNicolas Pitre	help
1600704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
1601704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
1602704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
1603704bdda0SNicolas Pitre
1604704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
1605704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
1606704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
1607704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
1608704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
1609704bdda0SNicolas Pitre
1610704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
1611704bdda0SNicolas Pitre
16126c90c872SNicolas Pitreconfig OABI_COMPAT
1613a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1614d6f94fa0SKees Cook	depends on AEABI && !THUMB2_KERNEL
16156c90c872SNicolas Pitre	help
16166c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
16176c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
16186c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
16196c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
16206c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
16216c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
162291702175SKees Cook
162391702175SKees Cook	  The seccomp filter system will not be available when this is
162491702175SKees Cook	  selected, since there is no way yet to sensibly distinguish
162591702175SKees Cook	  between calling conventions during filtering.
162691702175SKees Cook
16276c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
16286c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
16296c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
16306c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
1631b02f8467SKees Cook	  at all). If in doubt say N.
16326c90c872SNicolas Pitre
1633eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL
1634e80d6a24SMel Gorman	bool
1635e80d6a24SMel Gorman
163605944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE
163705944d74SRussell King	bool
163805944d74SRussell King
163907a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT
164007a2f737SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
164107a2f737SRussell King
164205944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL
1643be370302SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
1644c80d79d7SYasunori Goto
16457b7bf499SWill Deaconconfig HAVE_ARCH_PFN_VALID
16467b7bf499SWill Deacon	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
16477b7bf499SWill Deacon
1648053a96caSNicolas Pitreconfig HIGHMEM
1649e8db89a2SRussell King	bool "High Memory Support"
1650e8db89a2SRussell King	depends on MMU
1651053a96caSNicolas Pitre	help
1652053a96caSNicolas Pitre	  The address space of ARM processors is only 4 Gigabytes large
1653053a96caSNicolas Pitre	  and it has to accommodate user address space, kernel address
1654053a96caSNicolas Pitre	  space as well as some memory mapped IO. That means that, if you
1655053a96caSNicolas Pitre	  have a large amount of physical memory and/or IO, not all of the
1656053a96caSNicolas Pitre	  memory can be "permanently mapped" by the kernel. The physical
1657053a96caSNicolas Pitre	  memory that is not permanently mapped is called "high memory".
1658053a96caSNicolas Pitre
1659053a96caSNicolas Pitre	  Depending on the selected kernel/user memory split, minimum
1660053a96caSNicolas Pitre	  vmalloc space and actual amount of RAM, you may not need this
1661053a96caSNicolas Pitre	  option which should result in a slightly faster kernel.
1662053a96caSNicolas Pitre
1663053a96caSNicolas Pitre	  If unsure, say n.
1664053a96caSNicolas Pitre
166565cec8e3SRussell Kingconfig HIGHPTE
166665cec8e3SRussell King	bool "Allocate 2nd-level pagetables from highmem"
166765cec8e3SRussell King	depends on HIGHMEM
166865cec8e3SRussell King
16691b8873a0SJamie Ilesconfig HW_PERF_EVENTS
16701b8873a0SJamie Iles	bool "Enable hardware performance counter support for perf events"
1671f0d1bc47SWill Deacon	depends on PERF_EVENTS
16721b8873a0SJamie Iles	default y
16731b8873a0SJamie Iles	help
16741b8873a0SJamie Iles	  Enable hardware performance counter support for perf events. If
16751b8873a0SJamie Iles	  disabled, perf events will use software events only.
16761b8873a0SJamie Iles
16771355e2a6SCatalin Marinasconfig SYS_SUPPORTS_HUGETLBFS
16781355e2a6SCatalin Marinas       def_bool y
16791355e2a6SCatalin Marinas       depends on ARM_LPAE
16801355e2a6SCatalin Marinas
16818d962507SCatalin Marinasconfig HAVE_ARCH_TRANSPARENT_HUGEPAGE
16828d962507SCatalin Marinas       def_bool y
16838d962507SCatalin Marinas       depends on ARM_LPAE
16848d962507SCatalin Marinas
16854bfab203SSteven Capperconfig ARCH_WANT_GENERAL_HUGETLB
16864bfab203SSteven Capper	def_bool y
16874bfab203SSteven Capper
16883f22ab27SDave Hansensource "mm/Kconfig"
16893f22ab27SDave Hansen
1690c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER
1691bf98c1eaSLaurent Pinchart	int "Maximum zone order" if ARCH_SHMOBILE_LEGACY
1692bf98c1eaSLaurent Pinchart	range 11 64 if ARCH_SHMOBILE_LEGACY
1693898f08e1SYegor Yefremov	default "12" if SOC_AM33XX
16946d85e2b0SUwe Kleine-König	default "9" if SA1111 || ARCH_EFM32
1695c1b2d970SMagnus Damm	default "11"
1696c1b2d970SMagnus Damm	help
1697c1b2d970SMagnus Damm	  The kernel memory allocator divides physically contiguous memory
1698c1b2d970SMagnus Damm	  blocks into "zones", where each zone is a power of two number of
1699c1b2d970SMagnus Damm	  pages.  This option selects the largest power of two that the kernel
1700c1b2d970SMagnus Damm	  keeps in the memory allocator.  If you need to allocate very large
1701c1b2d970SMagnus Damm	  blocks of physically contiguous memory, then you may need to
1702c1b2d970SMagnus Damm	  increase this value.
1703c1b2d970SMagnus Damm
1704c1b2d970SMagnus Damm	  This config option is actually maximum order plus one. For example,
1705c1b2d970SMagnus Damm	  a value of 11 means that the largest free memory block is 2^10 pages.
1706c1b2d970SMagnus Damm
17071da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
17081da177e4SLinus Torvalds	bool
1709f12d0d7cSHyok S. Choi	depends on CPU_CP15_MMU
17101da177e4SLinus Torvalds	default y if !ARCH_EBSA110
1711e119bfffSRussell King	select HAVE_PROC_CPU if PROC_FS
17121da177e4SLinus Torvalds	help
17131da177e4SLinus Torvalds	  ARM processors cannot fetch/store information which is not
17141da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
17151da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
17161da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
17171da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
17181da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
17191da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
17201da177e4SLinus Torvalds
172139ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY
172238ef2ad5SLinus Walleij	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
172338ef2ad5SLinus Walleij	depends on MMU
172439ec58f3SLennert Buytenhek	default y if CPU_FEROCEON
172539ec58f3SLennert Buytenhek	help
172639ec58f3SLennert Buytenhek	  Implement faster copy_to_user and clear_user methods for CPU
172739ec58f3SLennert Buytenhek	  cores where a 8-word STM instruction give significantly higher
172839ec58f3SLennert Buytenhek	  memory write throughput than a sequence of individual 32bit stores.
172939ec58f3SLennert Buytenhek
173039ec58f3SLennert Buytenhek	  A possible side effect is a slight increase in scheduling latency
173139ec58f3SLennert Buytenhek	  between threads sharing the same address space if they invoke
173239ec58f3SLennert Buytenhek	  such copy operations with large buffers.
173339ec58f3SLennert Buytenhek
173439ec58f3SLennert Buytenhek	  However, if the CPU data cache is using a write-allocate mode,
173539ec58f3SLennert Buytenhek	  this option is unlikely to provide any performance gain.
173639ec58f3SLennert Buytenhek
173770c70d97SNicolas Pitreconfig SECCOMP
173870c70d97SNicolas Pitre	bool
173970c70d97SNicolas Pitre	prompt "Enable seccomp to safely compute untrusted bytecode"
174070c70d97SNicolas Pitre	---help---
174170c70d97SNicolas Pitre	  This kernel feature is useful for number crunching applications
174270c70d97SNicolas Pitre	  that may need to compute untrusted bytecode during their
174370c70d97SNicolas Pitre	  execution. By using pipes or other transports made available to
174470c70d97SNicolas Pitre	  the process as file descriptors supporting the read/write
174570c70d97SNicolas Pitre	  syscalls, it's possible to isolate those applications in
174670c70d97SNicolas Pitre	  their own address space using seccomp. Once seccomp is
174770c70d97SNicolas Pitre	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
174870c70d97SNicolas Pitre	  and the task is only allowed to execute a few safe syscalls
174970c70d97SNicolas Pitre	  defined by each seccomp mode.
175070c70d97SNicolas Pitre
175106e6295bSStefano Stabelliniconfig SWIOTLB
175206e6295bSStefano Stabellini	def_bool y
175306e6295bSStefano Stabellini
175406e6295bSStefano Stabelliniconfig IOMMU_HELPER
175506e6295bSStefano Stabellini	def_bool SWIOTLB
175606e6295bSStefano Stabellini
1757eff8d644SStefano Stabelliniconfig XEN_DOM0
1758eff8d644SStefano Stabellini	def_bool y
1759eff8d644SStefano Stabellini	depends on XEN
1760eff8d644SStefano Stabellini
1761eff8d644SStefano Stabelliniconfig XEN
1762eff8d644SStefano Stabellini	bool "Xen guest support on ARM (EXPERIMENTAL)"
176385323a99SIan Campbell	depends on ARM && AEABI && OF
1764f880b67dSArnd Bergmann	depends on CPU_V7 && !CPU_V6
176585323a99SIan Campbell	depends on !GENERIC_ATOMIC64
17667693deccSUwe Kleine-König	depends on MMU
176751aaf81fSRussell King	select ARCH_DMA_ADDR_T_64BIT
176817b7ab80SStefano Stabellini	select ARM_PSCI
176983862ccfSStefano Stabellini	select SWIOTLB_XEN
1770eff8d644SStefano Stabellini	help
1771eff8d644SStefano Stabellini	  Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
1772eff8d644SStefano Stabellini
17731da177e4SLinus Torvaldsendmenu
17741da177e4SLinus Torvalds
17751da177e4SLinus Torvaldsmenu "Boot options"
17761da177e4SLinus Torvalds
17779eb8f674SGrant Likelyconfig USE_OF
17789eb8f674SGrant Likely	bool "Flattened Device Tree support"
1779b1b3f49cSRussell King	select IRQ_DOMAIN
17809eb8f674SGrant Likely	select OF
17819eb8f674SGrant Likely	select OF_EARLY_FLATTREE
1782bcedb5f9SMarek Szyprowski	select OF_RESERVED_MEM
17839eb8f674SGrant Likely	help
17849eb8f674SGrant Likely	  Include support for flattened device tree machine descriptions.
17859eb8f674SGrant Likely
1786bd51e2f5SNicolas Pitreconfig ATAGS
1787bd51e2f5SNicolas Pitre	bool "Support for the traditional ATAGS boot data passing" if USE_OF
1788bd51e2f5SNicolas Pitre	default y
1789bd51e2f5SNicolas Pitre	help
1790bd51e2f5SNicolas Pitre	  This is the traditional way of passing data to the kernel at boot
1791bd51e2f5SNicolas Pitre	  time. If you are solely relying on the flattened device tree (or
1792bd51e2f5SNicolas Pitre	  the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
1793bd51e2f5SNicolas Pitre	  to remove ATAGS support from your kernel binary.  If unsure,
1794bd51e2f5SNicolas Pitre	  leave this to y.
1795bd51e2f5SNicolas Pitre
1796bd51e2f5SNicolas Pitreconfig DEPRECATED_PARAM_STRUCT
1797bd51e2f5SNicolas Pitre	bool "Provide old way to pass kernel parameters"
1798bd51e2f5SNicolas Pitre	depends on ATAGS
1799bd51e2f5SNicolas Pitre	help
1800bd51e2f5SNicolas Pitre	  This was deprecated in 2001 and announced to live on for 5 years.
1801bd51e2f5SNicolas Pitre	  Some old boot loaders still use this way.
1802bd51e2f5SNicolas Pitre
18031da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
18041da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
18051da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
18061da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
18071da177e4SLinus Torvalds	default "0"
18081da177e4SLinus Torvalds	help
18091da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
18101da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
18111da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
18121da177e4SLinus Torvalds	  value in their defconfig file.
18131da177e4SLinus Torvalds
18141da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
18151da177e4SLinus Torvalds
18161da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
18171da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
18181da177e4SLinus Torvalds	default "0"
18191da177e4SLinus Torvalds	help
1820f8c440b2SDan Fandrich	  The base address of an area of read/write memory in the target
1821f8c440b2SDan Fandrich	  for the ROM-able zImage which must be available while the
1822f8c440b2SDan Fandrich	  decompressor is running. It must be large enough to hold the
1823f8c440b2SDan Fandrich	  entire decompressed kernel plus an additional 128 KiB.
1824f8c440b2SDan Fandrich	  Platforms which normally make use of ROM-able zImage formats
1825f8c440b2SDan Fandrich	  normally set this to a suitable value in their defconfig file.
18261da177e4SLinus Torvalds
18271da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
18281da177e4SLinus Torvalds
18291da177e4SLinus Torvaldsconfig ZBOOT_ROM
18301da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
18311da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
183210968131SRussell King	depends on !ARM_APPENDED_DTB && !XIP_KERNEL && !AUTO_ZRELADDR
18331da177e4SLinus Torvalds	help
18341da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
18351da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
18361da177e4SLinus Torvalds
1837090ab3ffSSimon Hormanchoice
1838090ab3ffSSimon Horman	prompt "Include SD/MMC loader in zImage (EXPERIMENTAL)"
1839d6f94fa0SKees Cook	depends on ZBOOT_ROM && ARCH_SH7372
1840090ab3ffSSimon Horman	default ZBOOT_ROM_NONE
1841090ab3ffSSimon Horman	help
1842090ab3ffSSimon Horman	  Include experimental SD/MMC loading code in the ROM-able zImage.
184359bf8964SMasanari Iida	  With this enabled it is possible to write the ROM-able zImage
1844090ab3ffSSimon Horman	  kernel image to an MMC or SD card and boot the kernel straight
1845090ab3ffSSimon Horman	  from the reset vector. At reset the processor Mask ROM will load
184659bf8964SMasanari Iida	  the first part of the ROM-able zImage which in turn loads the
1847090ab3ffSSimon Horman	  rest the kernel image to RAM.
1848090ab3ffSSimon Horman
1849090ab3ffSSimon Hormanconfig ZBOOT_ROM_NONE
1850090ab3ffSSimon Horman	bool "No SD/MMC loader in zImage (EXPERIMENTAL)"
1851090ab3ffSSimon Horman	help
1852090ab3ffSSimon Horman	  Do not load image from SD or MMC
1853090ab3ffSSimon Horman
1854f45b1149SSimon Hormanconfig ZBOOT_ROM_MMCIF
1855f45b1149SSimon Horman	bool "Include MMCIF loader in zImage (EXPERIMENTAL)"
1856f45b1149SSimon Horman	help
1857090ab3ffSSimon Horman	  Load image from MMCIF hardware block.
1858090ab3ffSSimon Horman
1859090ab3ffSSimon Hormanconfig ZBOOT_ROM_SH_MOBILE_SDHI
1860090ab3ffSSimon Horman	bool "Include SuperH Mobile SDHI loader in zImage (EXPERIMENTAL)"
1861090ab3ffSSimon Horman	help
1862090ab3ffSSimon Horman	  Load image from SDHI hardware block
1863090ab3ffSSimon Horman
1864090ab3ffSSimon Hormanendchoice
1865f45b1149SSimon Horman
1866e2a6a3aaSJohn Bonesioconfig ARM_APPENDED_DTB
1867e2a6a3aaSJohn Bonesio	bool "Use appended device tree blob to zImage (EXPERIMENTAL)"
186810968131SRussell King	depends on OF
1869e2a6a3aaSJohn Bonesio	help
1870e2a6a3aaSJohn Bonesio	  With this option, the boot code will look for a device tree binary
1871e2a6a3aaSJohn Bonesio	  (DTB) appended to zImage
1872e2a6a3aaSJohn Bonesio	  (e.g. cat zImage <filename>.dtb > zImage_w_dtb).
1873e2a6a3aaSJohn Bonesio
1874e2a6a3aaSJohn Bonesio	  This is meant as a backward compatibility convenience for those
1875e2a6a3aaSJohn Bonesio	  systems with a bootloader that can't be upgraded to accommodate
1876e2a6a3aaSJohn Bonesio	  the documented boot protocol using a device tree.
1877e2a6a3aaSJohn Bonesio
1878e2a6a3aaSJohn Bonesio	  Beware that there is very little in terms of protection against
1879e2a6a3aaSJohn Bonesio	  this option being confused by leftover garbage in memory that might
1880e2a6a3aaSJohn Bonesio	  look like a DTB header after a reboot if no actual DTB is appended
1881e2a6a3aaSJohn Bonesio	  to zImage.  Do not leave this option active in a production kernel
1882e2a6a3aaSJohn Bonesio	  if you don't intend to always append a DTB.  Proper passing of the
1883e2a6a3aaSJohn Bonesio	  location into r2 of a bootloader provided DTB is always preferable
1884e2a6a3aaSJohn Bonesio	  to this option.
1885e2a6a3aaSJohn Bonesio
1886b90b9a38SNicolas Pitreconfig ARM_ATAG_DTB_COMPAT
1887b90b9a38SNicolas Pitre	bool "Supplement the appended DTB with traditional ATAG information"
1888b90b9a38SNicolas Pitre	depends on ARM_APPENDED_DTB
1889b90b9a38SNicolas Pitre	help
1890b90b9a38SNicolas Pitre	  Some old bootloaders can't be updated to a DTB capable one, yet
1891b90b9a38SNicolas Pitre	  they provide ATAGs with memory configuration, the ramdisk address,
1892b90b9a38SNicolas Pitre	  the kernel cmdline string, etc.  Such information is dynamically
1893b90b9a38SNicolas Pitre	  provided by the bootloader and can't always be stored in a static
1894b90b9a38SNicolas Pitre	  DTB.  To allow a device tree enabled kernel to be used with such
1895b90b9a38SNicolas Pitre	  bootloaders, this option allows zImage to extract the information
1896b90b9a38SNicolas Pitre	  from the ATAG list and store it at run time into the appended DTB.
1897b90b9a38SNicolas Pitre
1898d0f34a11SGenoud Richardchoice
1899d0f34a11SGenoud Richard	prompt "Kernel command line type" if ARM_ATAG_DTB_COMPAT
1900d0f34a11SGenoud Richard	default ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1901d0f34a11SGenoud Richard
1902d0f34a11SGenoud Richardconfig ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER
1903d0f34a11SGenoud Richard	bool "Use bootloader kernel arguments if available"
1904d0f34a11SGenoud Richard	help
1905d0f34a11SGenoud Richard	  Uses the command-line options passed by the boot loader instead of
1906d0f34a11SGenoud Richard	  the device tree bootargs property. If the boot loader doesn't provide
1907d0f34a11SGenoud Richard	  any, the device tree bootargs property will be used.
1908d0f34a11SGenoud Richard
1909d0f34a11SGenoud Richardconfig ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND
1910d0f34a11SGenoud Richard	bool "Extend with bootloader kernel arguments"
1911d0f34a11SGenoud Richard	help
1912d0f34a11SGenoud Richard	  The command-line arguments provided by the boot loader will be
1913d0f34a11SGenoud Richard	  appended to the the device tree bootargs property.
1914d0f34a11SGenoud Richard
1915d0f34a11SGenoud Richardendchoice
1916d0f34a11SGenoud Richard
19171da177e4SLinus Torvaldsconfig CMDLINE
19181da177e4SLinus Torvalds	string "Default kernel command string"
19191da177e4SLinus Torvalds	default ""
19201da177e4SLinus Torvalds	help
19211da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
19221da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
19231da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
19241da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
19251da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
19261da177e4SLinus Torvalds
19274394c124SVictor Boiviechoice
19284394c124SVictor Boivie	prompt "Kernel command line type" if CMDLINE != ""
19294394c124SVictor Boivie	default CMDLINE_FROM_BOOTLOADER
1930bd51e2f5SNicolas Pitre	depends on ATAGS
19314394c124SVictor Boivie
19324394c124SVictor Boivieconfig CMDLINE_FROM_BOOTLOADER
19334394c124SVictor Boivie	bool "Use bootloader kernel arguments if available"
19344394c124SVictor Boivie	help
19354394c124SVictor Boivie	  Uses the command-line options passed by the boot loader. If
19364394c124SVictor Boivie	  the boot loader doesn't provide any, the default kernel command
19374394c124SVictor Boivie	  string provided in CMDLINE will be used.
19384394c124SVictor Boivie
19394394c124SVictor Boivieconfig CMDLINE_EXTEND
19404394c124SVictor Boivie	bool "Extend bootloader kernel arguments"
19414394c124SVictor Boivie	help
19424394c124SVictor Boivie	  The command-line arguments provided by the boot loader will be
19434394c124SVictor Boivie	  appended to the default kernel command string.
19444394c124SVictor Boivie
194592d2040dSAlexander Hollerconfig CMDLINE_FORCE
194692d2040dSAlexander Holler	bool "Always use the default kernel command string"
194792d2040dSAlexander Holler	help
194892d2040dSAlexander Holler	  Always use the default kernel command string, even if the boot
194992d2040dSAlexander Holler	  loader passes other arguments to the kernel.
195092d2040dSAlexander Holler	  This is useful if you cannot or don't want to change the
195192d2040dSAlexander Holler	  command-line options your boot loader passes to the kernel.
19524394c124SVictor Boivieendchoice
195392d2040dSAlexander Holler
19541da177e4SLinus Torvaldsconfig XIP_KERNEL
19551da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
195610968131SRussell King	depends on !ARM_LPAE && !ARCH_MULTIPLATFORM
19571da177e4SLinus Torvalds	help
19581da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
19591da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
19601da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
19611da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
19621da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
19631da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
19641da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
19651da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
19661da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
19671da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
19681da177e4SLinus Torvalds
19691da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
19701da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
19711da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
19721da177e4SLinus Torvalds
19731da177e4SLinus Torvalds	  If unsure, say N.
19741da177e4SLinus Torvalds
19751da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
19761da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
19771da177e4SLinus Torvalds	depends on XIP_KERNEL
19781da177e4SLinus Torvalds	default "0x00080000"
19791da177e4SLinus Torvalds	help
19801da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
19811da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
19821da177e4SLinus Torvalds	  own flash usage.
19831da177e4SLinus Torvalds
1984c587e4a6SRichard Purdieconfig KEXEC
1985c587e4a6SRichard Purdie	bool "Kexec system call (EXPERIMENTAL)"
198619ab428fSStephen Warren	depends on (!SMP || PM_SLEEP_SMP)
198712db5562SVivek Goyal	select CRYPTO
198812db5562SVivek Goyal	select CRYPTO_SHA256
1989c587e4a6SRichard Purdie	help
1990c587e4a6SRichard Purdie	  kexec is a system call that implements the ability to shutdown your
1991c587e4a6SRichard Purdie	  current kernel, and to start another kernel.  It is like a reboot
199201dd2fbfSMatt LaPlante	  but it is independent of the system firmware.   And like a reboot
1993c587e4a6SRichard Purdie	  you can start any kernel with it, not just Linux.
1994c587e4a6SRichard Purdie
1995c587e4a6SRichard Purdie	  It is an ongoing process to be certain the hardware in a machine
1996c587e4a6SRichard Purdie	  is properly shutdown, so do not be surprised if this code does not
1997bf220695SGeert Uytterhoeven	  initially work for you.
1998c587e4a6SRichard Purdie
19994cd9d6f7SRichard Purdieconfig ATAGS_PROC
20004cd9d6f7SRichard Purdie	bool "Export atags in procfs"
2001bd51e2f5SNicolas Pitre	depends on ATAGS && KEXEC
2002b98d7291SUli Luckas	default y
20034cd9d6f7SRichard Purdie	help
20044cd9d6f7SRichard Purdie	  Should the atags used to boot the kernel be exported in an "atags"
20054cd9d6f7SRichard Purdie	  file in procfs. Useful with kexec.
20064cd9d6f7SRichard Purdie
2007cb5d39b3SMika Westerbergconfig CRASH_DUMP
2008cb5d39b3SMika Westerberg	bool "Build kdump crash kernel (EXPERIMENTAL)"
2009cb5d39b3SMika Westerberg	help
2010cb5d39b3SMika Westerberg	  Generate crash dump after being started by kexec. This should
2011cb5d39b3SMika Westerberg	  be normally only set in special crash dump kernels which are
2012cb5d39b3SMika Westerberg	  loaded in the main kernel with kexec-tools into a specially
2013cb5d39b3SMika Westerberg	  reserved region and then later executed after a crash by
2014cb5d39b3SMika Westerberg	  kdump/kexec. The crash dump kernel must be compiled to a
2015cb5d39b3SMika Westerberg	  memory address not used by the main kernel
2016cb5d39b3SMika Westerberg
2017cb5d39b3SMika Westerberg	  For more details see Documentation/kdump/kdump.txt
2018cb5d39b3SMika Westerberg
2019e69edc79SEric Miaoconfig AUTO_ZRELADDR
2020e69edc79SEric Miao	bool "Auto calculation of the decompressed kernel image address"
2021e69edc79SEric Miao	help
2022e69edc79SEric Miao	  ZRELADDR is the physical address where the decompressed kernel
2023e69edc79SEric Miao	  image will be placed. If AUTO_ZRELADDR is selected, the address
2024e69edc79SEric Miao	  will be determined at run-time by masking the current IP with
2025e69edc79SEric Miao	  0xf8000000. This assumes the zImage being placed in the first 128MB
2026e69edc79SEric Miao	  from start of memory.
2027e69edc79SEric Miao
20281da177e4SLinus Torvaldsendmenu
20291da177e4SLinus Torvalds
2030ac9d7efcSRussell Kingmenu "CPU Power Management"
20311da177e4SLinus Torvalds
20321da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
20331da177e4SLinus Torvalds
2034ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig"
2035ac9d7efcSRussell King
2036ac9d7efcSRussell Kingendmenu
2037ac9d7efcSRussell King
20381da177e4SLinus Torvaldsmenu "Floating point emulation"
20391da177e4SLinus Torvalds
20401da177e4SLinus Torvaldscomment "At least one emulation must be selected"
20411da177e4SLinus Torvalds
20421da177e4SLinus Torvaldsconfig FPE_NWFPE
20431da177e4SLinus Torvalds	bool "NWFPE math emulation"
2044593c252aSDave Martin	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
20451da177e4SLinus Torvalds	---help---
20461da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
20471da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
20481da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
20491da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
20501da177e4SLinus Torvalds
20511da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
20521da177e4SLinus Torvalds	  early in the bootup.
20531da177e4SLinus Torvalds
20541da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
20551da177e4SLinus Torvalds	bool "Support extended precision"
2056bedf142bSLennert Buytenhek	depends on FPE_NWFPE
20571da177e4SLinus Torvalds	help
20581da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
20591da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
20601da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
20611da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
20621da177e4SLinus Torvalds	  floating point emulator without any good reason.
20631da177e4SLinus Torvalds
20641da177e4SLinus Torvalds	  You almost surely want to say N here.
20651da177e4SLinus Torvalds
20661da177e4SLinus Torvaldsconfig FPE_FASTFPE
20671da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
2068d6f94fa0SKees Cook	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
20691da177e4SLinus Torvalds	---help---
20701da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
20711da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
20721da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
20731da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
20741da177e4SLinus Torvalds
20751da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
20761da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
20771da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
20781da177e4SLinus Torvalds	  choose NWFPE.
20791da177e4SLinus Torvalds
20801da177e4SLinus Torvaldsconfig VFP
20811da177e4SLinus Torvalds	bool "VFP-format floating point maths"
2082e399b1a4SRussell King	depends on CPU_V6 || CPU_V6K || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
20831da177e4SLinus Torvalds	help
20841da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
20851da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
20861da177e4SLinus Torvalds
20871da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
20881da177e4SLinus Torvalds	  release notes and additional status information.
20891da177e4SLinus Torvalds
20901da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
20911da177e4SLinus Torvalds
209225ebee02SCatalin Marinasconfig VFPv3
209325ebee02SCatalin Marinas	bool
209425ebee02SCatalin Marinas	depends on VFP
209525ebee02SCatalin Marinas	default y if CPU_V7
209625ebee02SCatalin Marinas
2097b5872db4SCatalin Marinasconfig NEON
2098b5872db4SCatalin Marinas	bool "Advanced SIMD (NEON) Extension support"
2099b5872db4SCatalin Marinas	depends on VFPv3 && CPU_V7
2100b5872db4SCatalin Marinas	help
2101b5872db4SCatalin Marinas	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
2102b5872db4SCatalin Marinas	  Extension.
2103b5872db4SCatalin Marinas
210473c132c1SArd Biesheuvelconfig KERNEL_MODE_NEON
210573c132c1SArd Biesheuvel	bool "Support for NEON in kernel mode"
2106c4a30c3bSRussell King	depends on NEON && AEABI
210773c132c1SArd Biesheuvel	help
210873c132c1SArd Biesheuvel	  Say Y to include support for NEON in kernel mode.
210973c132c1SArd Biesheuvel
21101da177e4SLinus Torvaldsendmenu
21111da177e4SLinus Torvalds
21121da177e4SLinus Torvaldsmenu "Userspace binary formats"
21131da177e4SLinus Torvalds
21141da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
21151da177e4SLinus Torvalds
21161da177e4SLinus Torvaldsconfig ARTHUR
21171da177e4SLinus Torvalds	tristate "RISC OS personality"
2118704bdda0SNicolas Pitre	depends on !AEABI
21191da177e4SLinus Torvalds	help
21201da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
21211da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
21221da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
21231da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
21241da177e4SLinus Torvalds	  will be called arthur).
21251da177e4SLinus Torvalds
21261da177e4SLinus Torvaldsendmenu
21271da177e4SLinus Torvalds
21281da177e4SLinus Torvaldsmenu "Power management options"
21291da177e4SLinus Torvalds
2130eceab4acSRussell Kingsource "kernel/power/Kconfig"
21311da177e4SLinus Torvalds
2132f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE
213319a0519dSEzequiel Garcia	depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \
2134f0d75153SUwe Kleine-König		CPU_V6 || CPU_V6K || CPU_V7 || CPU_V7M || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
2135f4cb5700SJohannes Berg	def_bool y
2136f4cb5700SJohannes Berg
213715e0d9e3SArnd Bergmannconfig ARM_CPU_SUSPEND
213815e0d9e3SArnd Bergmann	def_bool PM_SLEEP
213915e0d9e3SArnd Bergmann
2140603fb42aSSebastian Capellaconfig ARCH_HIBERNATION_POSSIBLE
2141603fb42aSSebastian Capella	bool
2142603fb42aSSebastian Capella	depends on MMU
2143603fb42aSSebastian Capella	default y if ARCH_SUSPEND_POSSIBLE
2144603fb42aSSebastian Capella
21451da177e4SLinus Torvaldsendmenu
21461da177e4SLinus Torvalds
2147d5950b43SSam Ravnborgsource "net/Kconfig"
2148d5950b43SSam Ravnborg
2149ac25150fSUwe Kleine-Königsource "drivers/Kconfig"
21501da177e4SLinus Torvalds
21511da177e4SLinus Torvaldssource "fs/Kconfig"
21521da177e4SLinus Torvalds
21531da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
21541da177e4SLinus Torvalds
21551da177e4SLinus Torvaldssource "security/Kconfig"
21561da177e4SLinus Torvalds
21571da177e4SLinus Torvaldssource "crypto/Kconfig"
21581da177e4SLinus Torvalds
21591da177e4SLinus Torvaldssource "lib/Kconfig"
2160749cf76cSChristoffer Dall
2161749cf76cSChristoffer Dallsource "arch/arm/kvm/Kconfig"
2162