xref: /linux/arch/arm/Kconfig (revision e69edc7939abda1f696c482faa8168d80420f75c)
11da177e4SLinus Torvalds#
21da177e4SLinus Torvalds# For a description of the syntax of this configuration file,
31da177e4SLinus Torvalds# see Documentation/kbuild/kconfig-language.txt.
41da177e4SLinus Torvalds#
51da177e4SLinus Torvalds
61da177e4SLinus Torvaldsmainmenu "Linux Kernel Configuration"
71da177e4SLinus Torvalds
81da177e4SLinus Torvaldsconfig ARM
91da177e4SLinus Torvalds	bool
101da177e4SLinus Torvalds	default y
11e17c6d56SDavid Woodhouse	select HAVE_AOUT
122064c946SAdrian Bunk	select HAVE_IDE
1312b824fbSAlessandro Zummo	select RTC_LIB
1475e7153aSRalf Baechle	select SYS_SUPPORTS_APM_EMULATION
1524b44a66SWill Deacon	select GENERIC_ATOMIC64 if (!CPU_32v6K)
16fe166148SWill Deacon	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
175cbad0ebSJason Wessel	select HAVE_ARCH_KGDB
183f550096SMathieu Desnoyers	select HAVE_KPROBES if (!XIP_KERNEL)
199edddaa2SAnanth N Mavinakayanahalli	select HAVE_KRETPROBES if (HAVE_KPROBES)
20606576ceSSteven Rostedt	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
211fe53268SDmitry Baryshkov	select HAVE_GENERIC_DMA_COHERENT
22e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_GZIP
23e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_LZO
246e8699f7SAlbin Tonnerre	select HAVE_KERNEL_LZMA
257ada189fSJamie Iles	select HAVE_PERF_EVENTS
267ada189fSJamie Iles	select PERF_USE_VMALLOC
271da177e4SLinus Torvalds	help
281da177e4SLinus Torvalds	  The ARM series is a line of low-power-consumption RISC chip designs
29f6c8965aSMartin Michlmayr	  licensed by ARM Ltd and targeted at embedded applications and
301da177e4SLinus Torvalds	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
311da177e4SLinus Torvalds	  manufactured, but legacy ARM-based PC hardware remains popular in
321da177e4SLinus Torvalds	  Europe.  There is an ARM Linux project with a web page at
331da177e4SLinus Torvalds	  <http://www.arm.linux.org.uk/>.
341da177e4SLinus Torvalds
351a189b97SRussell Kingconfig HAVE_PWM
361a189b97SRussell King	bool
371a189b97SRussell King
3875e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION
3975e7153aSRalf Baechle	bool
4075e7153aSRalf Baechle
410a938b97SDavid Brownellconfig GENERIC_GPIO
420a938b97SDavid Brownell	bool
430a938b97SDavid Brownell
44746140c7SKevin Hilmanconfig GENERIC_TIME
45746140c7SKevin Hilman	bool
465cfc8ee0SJohn Stultz	default y
475cfc8ee0SJohn Stultz
485cfc8ee0SJohn Stultzconfig ARCH_USES_GETTIMEOFFSET
495cfc8ee0SJohn Stultz	bool
505cfc8ee0SJohn Stultz	default n
51746140c7SKevin Hilman
520567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS
530567a0c0SKevin Hilman	bool
540567a0c0SKevin Hilman
55a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST
56a8655e83SCatalin Marinas	bool
57a8655e83SCatalin Marinas	depends on GENERIC_CLOCKEVENTS
58a8655e83SCatalin Marinas	default y if SMP && !LOCAL_TIMERS
59a8655e83SCatalin Marinas
60bc581770SLinus Walleijconfig HAVE_TCM
61bc581770SLinus Walleij	bool
62bc581770SLinus Walleij	select GENERIC_ALLOCATOR
63bc581770SLinus Walleij
64e119bfffSRussell Kingconfig HAVE_PROC_CPU
65e119bfffSRussell King	bool
66e119bfffSRussell King
675ea81769SAl Viroconfig NO_IOPORT
685ea81769SAl Viro	bool
695ea81769SAl Viro
701da177e4SLinus Torvaldsconfig EISA
711da177e4SLinus Torvalds	bool
721da177e4SLinus Torvalds	---help---
731da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
741da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
751da177e4SLinus Torvalds
761da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
771da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
781da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
791da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
801da177e4SLinus Torvalds
811da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
821da177e4SLinus Torvalds
831da177e4SLinus Torvalds	  Otherwise, say N.
841da177e4SLinus Torvalds
851da177e4SLinus Torvaldsconfig SBUS
861da177e4SLinus Torvalds	bool
871da177e4SLinus Torvalds
881da177e4SLinus Torvaldsconfig MCA
891da177e4SLinus Torvalds	bool
901da177e4SLinus Torvalds	help
911da177e4SLinus Torvalds	  MicroChannel Architecture is found in some IBM PS/2 machines and
921da177e4SLinus Torvalds	  laptops.  It is a bus system similar to PCI or ISA. See
931da177e4SLinus Torvalds	  <file:Documentation/mca.txt> (and especially the web page given
941da177e4SLinus Torvalds	  there) before attempting to build an MCA bus kernel.
951da177e4SLinus Torvalds
964a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS
974a2581a0SThomas Gleixner	bool
984a2581a0SThomas Gleixner	default y
994a2581a0SThomas Gleixner
100f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT
101f16fb1ecSRussell King	bool
102f16fb1ecSRussell King	default y
103f16fb1ecSRussell King
104f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT
105f76e9154SNicolas Pitre	bool
106f76e9154SNicolas Pitre	depends on !SMP
107f76e9154SNicolas Pitre	default y
108f76e9154SNicolas Pitre
109f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT
110f16fb1ecSRussell King	bool
111f16fb1ecSRussell King	default y
112f16fb1ecSRussell King
1137ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT
1147ad1bcb2SRussell King	bool
1157ad1bcb2SRussell King	default y
1167ad1bcb2SRussell King
1174a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND
1184a2581a0SThomas Gleixner	bool
1194a2581a0SThomas Gleixner	default y
1204a2581a0SThomas Gleixner
1214a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE
1224a2581a0SThomas Gleixner	bool
1234a2581a0SThomas Gleixner	default y
1244a2581a0SThomas Gleixner
12595c354feSNick Pigginconfig GENERIC_LOCKBREAK
12695c354feSNick Piggin	bool
12795c354feSNick Piggin	default y
12895c354feSNick Piggin	depends on SMP && PREEMPT
12995c354feSNick Piggin
1301da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK
1311da177e4SLinus Torvalds	bool
1321da177e4SLinus Torvalds	default y
1331da177e4SLinus Torvalds
1341da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
1351da177e4SLinus Torvalds	bool
1361da177e4SLinus Torvalds
137f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32
138f0d1b0b3SDavid Howells	bool
139f0d1b0b3SDavid Howells
140f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64
141f0d1b0b3SDavid Howells	bool
142f0d1b0b3SDavid Howells
14389c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ
14489c52ed4SBen Dooks	bool
14589c52ed4SBen Dooks	help
14689c52ed4SBen Dooks	  Internal node to signify that the ARCH has CPUFREQ support
14789c52ed4SBen Dooks	  and that the relevant menu configurations are displayed for
14889c52ed4SBen Dooks	  it.
14989c52ed4SBen Dooks
150b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
151b89c3b16SAkinobu Mita	bool
152b89c3b16SAkinobu Mita	default y
153b89c3b16SAkinobu Mita
1541da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
1551da177e4SLinus Torvalds	bool
1561da177e4SLinus Torvalds	default y
1571da177e4SLinus Torvalds
158a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
159a08b6b79Sviro@ZenIV.linux.org.uk	bool
160a08b6b79Sviro@ZenIV.linux.org.uk
1615ac6da66SChristoph Lameterconfig ZONE_DMA
1625ac6da66SChristoph Lameter	bool
1635ac6da66SChristoph Lameter
164ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE
165ccd7ab7fSFUJITA Tomonori       def_bool y
166ccd7ab7fSFUJITA Tomonori
1671da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
1681da177e4SLinus Torvalds	bool
1691da177e4SLinus Torvalds
1701da177e4SLinus Torvaldsconfig FIQ
1711da177e4SLinus Torvalds	bool
1721da177e4SLinus Torvalds
173034d2f5aSAl Viroconfig ARCH_MTD_XIP
174034d2f5aSAl Viro	bool
175034d2f5aSAl Viro
17660a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ
17760a752efSPaulius Zaleckas	def_bool y
17860a752efSPaulius Zaleckas
179d6d502faSKukjin Kimconfig ARM_L1_CACHE_SHIFT_6
180d6d502faSKukjin Kim	bool
181d6d502faSKukjin Kim	help
182d6d502faSKukjin Kim	  Setting ARM L1 cache line size to 64 Bytes.
183d6d502faSKukjin Kim
184c760fc19SHyok S. Choiconfig VECTORS_BASE
185c760fc19SHyok S. Choi	hex
1866afd6faeSHyok S. Choi	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
187c760fc19SHyok S. Choi	default DRAM_BASE if REMAP_VECTORS_TO_RAM
188c760fc19SHyok S. Choi	default 0x00000000
189c760fc19SHyok S. Choi	help
190c760fc19SHyok S. Choi	  The base address of exception vectors.
191c760fc19SHyok S. Choi
1921da177e4SLinus Torvaldssource "init/Kconfig"
1931da177e4SLinus Torvalds
194dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer"
195dc52ddc0SMatt Helsley
1961da177e4SLinus Torvaldsmenu "System Type"
1971da177e4SLinus Torvalds
1983c427975SHyok S. Choiconfig MMU
1993c427975SHyok S. Choi	bool "MMU-based Paged Memory Management Support"
2003c427975SHyok S. Choi	default y
2013c427975SHyok S. Choi	help
2023c427975SHyok S. Choi	  Select if you want MMU-based virtualised addressing space
2033c427975SHyok S. Choi	  support by paged memory management. If unsure, say 'Y'.
2043c427975SHyok S. Choi
205ccf50e23SRussell King#
206ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option
207ccf50e23SRussell King# text.  Please add new entries in the option alphabetic order.
208ccf50e23SRussell King#
2091da177e4SLinus Torvaldschoice
2101da177e4SLinus Torvalds	prompt "ARM system type"
2116a0e2430SCatalin Marinas	default ARCH_VERSATILE
2121da177e4SLinus Torvalds
2134af6fee1SDeepak Saxenaconfig ARCH_AAEC2000
2144af6fee1SDeepak Saxena	bool "Agilent AAEC-2000 based"
215c750815eSRussell King	select CPU_ARM920T
2164af6fee1SDeepak Saxena	select ARM_AMBA
2179483a578SDavid Brownell	select HAVE_CLK
2185cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
2194af6fee1SDeepak Saxena	help
2204af6fee1SDeepak Saxena	  This enables support for systems based on the Agilent AAEC-2000
2214af6fee1SDeepak Saxena
2224af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR
2234af6fee1SDeepak Saxena	bool "ARM Ltd. Integrator family"
2244af6fee1SDeepak Saxena	select ARM_AMBA
22589c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
226d72fbdf0SRussell King	select COMMON_CLKDEV
227c5a0adb5SRussell King	select ICST
22813edd86dSRussell King	select GENERIC_CLOCKEVENTS
229f4b8b319SRussell King	select PLAT_VERSATILE
2304af6fee1SDeepak Saxena	help
2314af6fee1SDeepak Saxena	  Support for ARM's Integrator platform.
2324af6fee1SDeepak Saxena
2334af6fee1SDeepak Saxenaconfig ARCH_REALVIEW
2344af6fee1SDeepak Saxena	bool "ARM Ltd. RealView family"
2354af6fee1SDeepak Saxena	select ARM_AMBA
236cf30fb4aSRussell King	select COMMON_CLKDEV
237c5a0adb5SRussell King	select ICST
238ae30ceacSCatalin Marinas	select GENERIC_CLOCKEVENTS
239eb7fffa3SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
240f4b8b319SRussell King	select PLAT_VERSATILE
241e3887714SRussell King	select ARM_TIMER_SP804
242b56ba8aaSColin Tuckley	select GPIO_PL061 if GPIOLIB
2434af6fee1SDeepak Saxena	help
2444af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
2454af6fee1SDeepak Saxena
2464af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
2474af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
2484af6fee1SDeepak Saxena	select ARM_AMBA
2494af6fee1SDeepak Saxena	select ARM_VIC
25071a06da0SRussell King	select COMMON_CLKDEV
251c5a0adb5SRussell King	select ICST
25289df1272SKevin Hilman	select GENERIC_CLOCKEVENTS
253bbeddc43SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
254f4b8b319SRussell King	select PLAT_VERSATILE
255e3887714SRussell King	select ARM_TIMER_SP804
2564af6fee1SDeepak Saxena	help
2574af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
2584af6fee1SDeepak Saxena
259ceade897SRussell Kingconfig ARCH_VEXPRESS
260ceade897SRussell King	bool "ARM Ltd. Versatile Express family"
261ceade897SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
262ceade897SRussell King	select ARM_AMBA
263ceade897SRussell King	select ARM_TIMER_SP804
264ceade897SRussell King	select COMMON_CLKDEV
265ceade897SRussell King	select GENERIC_CLOCKEVENTS
266ceade897SRussell King	select HAVE_CLK
267ceade897SRussell King	select ICST
268ceade897SRussell King	select PLAT_VERSATILE
269ceade897SRussell King	help
270ceade897SRussell King	  This enables support for the ARM Ltd Versatile Express boards.
271ceade897SRussell King
2728fc5ffa0SAndrew Victorconfig ARCH_AT91
2738fc5ffa0SAndrew Victor	bool "Atmel AT91"
274f373e8c0SRyan Mallon	select ARCH_REQUIRE_GPIOLIB
27593686ae8SDavid Brownell	select HAVE_CLK
2765cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
2774af6fee1SDeepak Saxena	help
2782b3b3516SAndrew Victor	  This enables support for systems based on the Atmel AT91RM9200,
2792b3b3516SAndrew Victor	  AT91SAM9 and AT91CAP9 processors.
2804af6fee1SDeepak Saxena
281ccf50e23SRussell Kingconfig ARCH_BCMRING
282ccf50e23SRussell King	bool "Broadcom BCMRING"
283ccf50e23SRussell King	depends on MMU
284ccf50e23SRussell King	select CPU_V6
285ccf50e23SRussell King	select ARM_AMBA
286ccf50e23SRussell King	select COMMON_CLKDEV
287ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
288ccf50e23SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
289ccf50e23SRussell King	help
290ccf50e23SRussell King	  Support for Broadcom's BCMRing platform.
291ccf50e23SRussell King
2921da177e4SLinus Torvaldsconfig ARCH_CLPS711X
2934af6fee1SDeepak Saxena	bool "Cirrus Logic CLPS711x/EP721x-based"
294c750815eSRussell King	select CPU_ARM720T
2955cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
296f999b8bdSMartin Michlmayr	help
297f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
2981da177e4SLinus Torvalds
299d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX
300d94f944eSAnton Vorontsov	bool "Cavium Networks CNS3XXX family"
301d94f944eSAnton Vorontsov	select CPU_V6
302d94f944eSAnton Vorontsov	select GENERIC_CLOCKEVENTS
303d94f944eSAnton Vorontsov	select ARM_GIC
304d94f944eSAnton Vorontsov	help
305d94f944eSAnton Vorontsov	  Support for Cavium Networks CNS3XXX platform.
306d94f944eSAnton Vorontsov
307788c9700SRussell Kingconfig ARCH_GEMINI
308788c9700SRussell King	bool "Cortina Systems Gemini"
309788c9700SRussell King	select CPU_FA526
310788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
3115cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
312788c9700SRussell King	help
313788c9700SRussell King	  Support for the Cortina Systems Gemini family SoCs
314788c9700SRussell King
3151da177e4SLinus Torvaldsconfig ARCH_EBSA110
3161da177e4SLinus Torvalds	bool "EBSA-110"
317c750815eSRussell King	select CPU_SA110
318f7e68bbfSRussell King	select ISA
319c5eb2a2bSRussell King	select NO_IOPORT
3205cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
3211da177e4SLinus Torvalds	help
3221da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
323f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
3241da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
3251da177e4SLinus Torvalds	  parallel port.
3261da177e4SLinus Torvalds
327e7736d47SLennert Buytenhekconfig ARCH_EP93XX
328e7736d47SLennert Buytenhek	bool "EP93xx-based"
329c750815eSRussell King	select CPU_ARM920T
330e7736d47SLennert Buytenhek	select ARM_AMBA
331e7736d47SLennert Buytenhek	select ARM_VIC
332ae696fd5SRussell King	select COMMON_CLKDEV
3337444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
334eb33575cSMel Gorman	select ARCH_HAS_HOLES_MEMORYMODEL
3355cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
336e7736d47SLennert Buytenhek	help
337e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
338e7736d47SLennert Buytenhek
3391da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
3401da177e4SLinus Torvalds	bool "FootBridge"
341c750815eSRussell King	select CPU_SA110
3421da177e4SLinus Torvalds	select FOOTBRIDGE
3435cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
344f999b8bdSMartin Michlmayr	help
345f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
346f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
3471da177e4SLinus Torvalds
348788c9700SRussell Kingconfig ARCH_MXC
349788c9700SRussell King	bool "Freescale MXC/iMX-based"
350788c9700SRussell King	select GENERIC_CLOCKEVENTS
351788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
35203e09cd8SUwe Kleine-König	select COMMON_CLKDEV
353788c9700SRussell King	help
354788c9700SRussell King	  Support for Freescale MXC/iMX-based family of processors
355788c9700SRussell King
3567bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX
3577bd0f2f5Sdmitry pervushin	bool "Freescale STMP3xxx"
3587bd0f2f5Sdmitry pervushin	select CPU_ARM926T
3597bd0f2f5Sdmitry pervushin	select COMMON_CLKDEV
3607bd0f2f5Sdmitry pervushin	select ARCH_REQUIRE_GPIOLIB
3617bd0f2f5Sdmitry pervushin	select GENERIC_CLOCKEVENTS
3627bd0f2f5Sdmitry pervushin	select USB_ARCH_HAS_EHCI
3637bd0f2f5Sdmitry pervushin	help
3647bd0f2f5Sdmitry pervushin	  Support for systems based on the Freescale 3xxx CPUs.
3657bd0f2f5Sdmitry pervushin
3664af6fee1SDeepak Saxenaconfig ARCH_NETX
3674af6fee1SDeepak Saxena	bool "Hilscher NetX based"
368c750815eSRussell King	select CPU_ARM926T
3694af6fee1SDeepak Saxena	select ARM_VIC
3702fcfe6b8SUwe Kleine-König	select GENERIC_CLOCKEVENTS
371f999b8bdSMartin Michlmayr	help
3724af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
3734af6fee1SDeepak Saxena
3744af6fee1SDeepak Saxenaconfig ARCH_H720X
3754af6fee1SDeepak Saxena	bool "Hynix HMS720x-based"
376c750815eSRussell King	select CPU_ARM720T
3774af6fee1SDeepak Saxena	select ISA_DMA_API
3785cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
3794af6fee1SDeepak Saxena	help
3804af6fee1SDeepak Saxena	  This enables support for systems based on the Hynix HMS720x
3814af6fee1SDeepak Saxena
3823b938be6SRussell Kingconfig ARCH_IOP13XX
3833b938be6SRussell King	bool "IOP13xx-based"
3843b938be6SRussell King	depends on MMU
385c750815eSRussell King	select CPU_XSC3
3863b938be6SRussell King	select PLAT_IOP
3873b938be6SRussell King	select PCI
3883b938be6SRussell King	select ARCH_SUPPORTS_MSI
3898d5796d2SLennert Buytenhek	select VMSPLIT_1G
3903b938be6SRussell King	help
3913b938be6SRussell King	  Support for Intel's IOP13XX (XScale) family of processors.
3923b938be6SRussell King
3933f7e5815SLennert Buytenhekconfig ARCH_IOP32X
3943f7e5815SLennert Buytenhek	bool "IOP32x-based"
395a4f7e763SRussell King	depends on MMU
396c750815eSRussell King	select CPU_XSCALE
3977ae1f7ecSLennert Buytenhek	select PLAT_IOP
398f7e68bbfSRussell King	select PCI
399bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
400f999b8bdSMartin Michlmayr	help
4013f7e5815SLennert Buytenhek	  Support for Intel's 80219 and IOP32X (XScale) family of
4023f7e5815SLennert Buytenhek	  processors.
4033f7e5815SLennert Buytenhek
4043f7e5815SLennert Buytenhekconfig ARCH_IOP33X
4053f7e5815SLennert Buytenhek	bool "IOP33x-based"
4063f7e5815SLennert Buytenhek	depends on MMU
407c750815eSRussell King	select CPU_XSCALE
4087ae1f7ecSLennert Buytenhek	select PLAT_IOP
4093f7e5815SLennert Buytenhek	select PCI
410bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
4113f7e5815SLennert Buytenhek	help
4123f7e5815SLennert Buytenhek	  Support for Intel's IOP33X (XScale) family of processors.
4131da177e4SLinus Torvalds
4143b938be6SRussell Kingconfig ARCH_IXP23XX
4153b938be6SRussell King 	bool "IXP23XX-based"
416588ef769SDan Williams	depends on MMU
417c750815eSRussell King	select CPU_XSC3
418285f5fa7SDan Williams 	select PCI
4195cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
420285f5fa7SDan Williams	help
4213b938be6SRussell King	  Support for Intel's IXP23xx (XScale) family of processors.
4221da177e4SLinus Torvalds
4231da177e4SLinus Torvaldsconfig ARCH_IXP2000
4241da177e4SLinus Torvalds	bool "IXP2400/2800-based"
425a4f7e763SRussell King	depends on MMU
426c750815eSRussell King	select CPU_XSCALE
427f7e68bbfSRussell King	select PCI
4285cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
429f999b8bdSMartin Michlmayr	help
430f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
4311da177e4SLinus Torvalds
4323b938be6SRussell Kingconfig ARCH_IXP4XX
4333b938be6SRussell King	bool "IXP4xx-based"
434a4f7e763SRussell King	depends on MMU
435c750815eSRussell King	select CPU_XSCALE
4368858e9afSMilan Svoboda	select GENERIC_GPIO
4373b938be6SRussell King	select GENERIC_CLOCKEVENTS
438485bdde7SRussell King	select DMABOUNCE if PCI
439c4713074SLennert Buytenhek	help
4403b938be6SRussell King	  Support for Intel's IXP4XX (XScale) family of processors.
441c4713074SLennert Buytenhek
4421da177e4SLinus Torvaldsconfig ARCH_L7200
4431da177e4SLinus Torvalds	bool "LinkUp-L7200"
444c750815eSRussell King	select CPU_ARM720T
4451da177e4SLinus Torvalds	select FIQ
4465cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
4471da177e4SLinus Torvalds	help
4481da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
4491da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
4501da177e4SLinus Torvalds	  Information on this board can be obtained at:
4511da177e4SLinus Torvalds
4521da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
4531da177e4SLinus Torvalds
4541da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
4551da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
4561da177e4SLinus Torvalds
457edabd38eSSaeed Bisharaconfig ARCH_DOVE
458edabd38eSSaeed Bishara	bool "Marvell Dove"
459edabd38eSSaeed Bishara	select PCI
460edabd38eSSaeed Bishara	select ARCH_REQUIRE_GPIOLIB
461edabd38eSSaeed Bishara	select GENERIC_CLOCKEVENTS
462edabd38eSSaeed Bishara	select PLAT_ORION
463edabd38eSSaeed Bishara	help
464edabd38eSSaeed Bishara	  Support for the Marvell Dove SoC 88AP510
465edabd38eSSaeed Bishara
466651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD
467651c74c7SSaeed Bishara	bool "Marvell Kirkwood"
468c750815eSRussell King	select CPU_FEROCEON
469651c74c7SSaeed Bishara	select PCI
470a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
471651c74c7SSaeed Bishara	select GENERIC_CLOCKEVENTS
472651c74c7SSaeed Bishara	select PLAT_ORION
473651c74c7SSaeed Bishara	help
474651c74c7SSaeed Bishara	  Support for the following Marvell Kirkwood series SoCs:
475651c74c7SSaeed Bishara	  88F6180, 88F6192 and 88F6281.
476651c74c7SSaeed Bishara
477788c9700SRussell Kingconfig ARCH_LOKI
478788c9700SRussell King	bool "Marvell Loki (88RC8480)"
479788c9700SRussell King	select CPU_FEROCEON
480788c9700SRussell King	select GENERIC_CLOCKEVENTS
481788c9700SRussell King	select PLAT_ORION
482788c9700SRussell King	help
483788c9700SRussell King	  Support for the Marvell Loki (88RC8480) SoC.
484788c9700SRussell King
485788c9700SRussell Kingconfig ARCH_MV78XX0
486788c9700SRussell King	bool "Marvell MV78xx0"
487788c9700SRussell King	select CPU_FEROCEON
488788c9700SRussell King	select PCI
489a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
490788c9700SRussell King	select GENERIC_CLOCKEVENTS
491788c9700SRussell King	select PLAT_ORION
492788c9700SRussell King	help
493788c9700SRussell King	  Support for the following Marvell MV78xx0 series SoCs:
494788c9700SRussell King	  MV781x0, MV782x0.
495788c9700SRussell King
496788c9700SRussell Kingconfig ARCH_ORION5X
497788c9700SRussell King	bool "Marvell Orion"
498788c9700SRussell King	depends on MMU
499788c9700SRussell King	select CPU_FEROCEON
500788c9700SRussell King	select PCI
501a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
502788c9700SRussell King	select GENERIC_CLOCKEVENTS
503788c9700SRussell King	select PLAT_ORION
504788c9700SRussell King	help
505788c9700SRussell King	  Support for the following Marvell Orion 5x series SoCs:
506788c9700SRussell King	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
507788c9700SRussell King	  Orion-2 (5281), Orion-1-90 (6183).
508788c9700SRussell King
509788c9700SRussell Kingconfig ARCH_MMP
5102f7e8faeSHaojian Zhuang	bool "Marvell PXA168/910/MMP2"
511788c9700SRussell King	depends on MMU
512788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
513788c9700SRussell King	select COMMON_CLKDEV
514788c9700SRussell King	select GENERIC_CLOCKEVENTS
515788c9700SRussell King	select TICK_ONESHOT
516788c9700SRussell King	select PLAT_PXA
517788c9700SRussell King	help
5182f7e8faeSHaojian Zhuang	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
519788c9700SRussell King
520c53c9cf6SAndrew Victorconfig ARCH_KS8695
521c53c9cf6SAndrew Victor	bool "Micrel/Kendin KS8695"
522c750815eSRussell King	select CPU_ARM922T
52372880ad8SDaniel Silverstone	select ARCH_REQUIRE_GPIOLIB
5245cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
525c53c9cf6SAndrew Victor	help
526c53c9cf6SAndrew Victor	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
527c53c9cf6SAndrew Victor	  System-on-Chip devices.
528c53c9cf6SAndrew Victor
5299918cda5SUwe Kleine-Königconfig ARCH_NS9XXX
5309918cda5SUwe Kleine-König	bool "NetSilicon NS9xxx"
531c750815eSRussell King	select CPU_ARM926T
532689f2a01SUwe Kleine-König	select GENERIC_GPIO
533c0bb87f7SUwe Kleine-König	select GENERIC_CLOCKEVENTS
5349483a578SDavid Brownell	select HAVE_CLK
5359918cda5SUwe Kleine-König	help
5369918cda5SUwe Kleine-König	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
5379918cda5SUwe Kleine-König	  System.
5389918cda5SUwe Kleine-König
5399918cda5SUwe Kleine-König	  <http://www.digi.com/products/microprocessors/index.jsp>
5409918cda5SUwe Kleine-König
541788c9700SRussell Kingconfig ARCH_W90X900
542788c9700SRussell King	bool "Nuvoton W90X900 CPU"
543788c9700SRussell King	select CPU_ARM926T
544c52d3d68Swanzongshun	select ARCH_REQUIRE_GPIOLIB
5450e4a34bbSwanzongshun	select COMMON_CLKDEV
54658b5369eSwanzongshun	select GENERIC_CLOCKEVENTS
547777f9bebSLennert Buytenhek	help
548a8bc4eadSwanzongshun	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
549a8bc4eadSwanzongshun	  At present, the w90x900 has been renamed nuc900, regarding
550a8bc4eadSwanzongshun	  the ARM series product line, you can login the following
551a8bc4eadSwanzongshun	  link address to know more.
552a8bc4eadSwanzongshun
553a8bc4eadSwanzongshun	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
554a8bc4eadSwanzongshun		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
555585cf175STzachi Perelstein
556a62e9030Swanzongshunconfig ARCH_NUC93X
557a62e9030Swanzongshun	bool "Nuvoton NUC93X CPU"
558a62e9030Swanzongshun	select CPU_ARM926T
559a62e9030Swanzongshun	select COMMON_CLKDEV
560a62e9030Swanzongshun	help
561a62e9030Swanzongshun	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
562a62e9030Swanzongshun	  low-power and high performance MPEG-4/JPEG multimedia controller chip.
563a62e9030Swanzongshun
5644af6fee1SDeepak Saxenaconfig ARCH_PNX4008
5654af6fee1SDeepak Saxena	bool "Philips Nexperia PNX4008 Mobile"
566c750815eSRussell King	select CPU_ARM926T
5676985a5adSRussell King	select COMMON_CLKDEV
5685cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
5694af6fee1SDeepak Saxena	help
5704af6fee1SDeepak Saxena	  This enables support for Philips PNX4008 mobile platform.
5714af6fee1SDeepak Saxena
5721da177e4SLinus Torvaldsconfig ARCH_PXA
5732c8086a5Seric miao	bool "PXA2xx/PXA3xx-based"
574a4f7e763SRussell King	depends on MMU
575034d2f5aSAl Viro	select ARCH_MTD_XIP
57689c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
5778c3abc7dSRussell King	select COMMON_CLKDEV
5787444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
579981d0f39SEric Miao	select GENERIC_CLOCKEVENTS
580a88264c2SRussell King	select TICK_ONESHOT
581bd5ce433SEric Miao	select PLAT_PXA
582f999b8bdSMartin Michlmayr	help
5832c8086a5Seric miao	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
5841da177e4SLinus Torvalds
585788c9700SRussell Kingconfig ARCH_MSM
586788c9700SRussell King	bool "Qualcomm MSM"
5874b536b8dSSteve Muckle	select HAVE_CLK
58849cbe786SEric Miao	select GENERIC_CLOCKEVENTS
58949cbe786SEric Miao	help
5904b53eb4fSDaniel Walker	  Support for Qualcomm MSM/QSD based systems.  This runs on the
5914b53eb4fSDaniel Walker	  apps processor of the MSM/QSD and depends on a shared memory
5924b53eb4fSDaniel Walker	  interface to the modem processor which runs the baseband
5934b53eb4fSDaniel Walker	  stack and controls some vital subsystems
5944b53eb4fSDaniel Walker	  (clock and power control, etc).
59549cbe786SEric Miao
596c793c1b0SMagnus Dammconfig ARCH_SHMOBILE
597c793c1b0SMagnus Damm	bool "Renesas SH-Mobile"
598c793c1b0SMagnus Damm	help
599c793c1b0SMagnus Damm	  Support for Renesas's SH-Mobile ARM platforms
600c793c1b0SMagnus Damm
6011da177e4SLinus Torvaldsconfig ARCH_RPC
6021da177e4SLinus Torvalds	bool "RiscPC"
6031da177e4SLinus Torvalds	select ARCH_ACORN
6041da177e4SLinus Torvalds	select FIQ
6051da177e4SLinus Torvalds	select TIMER_ACORN
606a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
607341eb781SBen Dooks	select HAVE_PATA_PLATFORM
608065909b9SRussell King	select ISA_DMA_API
6095ea81769SAl Viro	select NO_IOPORT
61007f841b7SRussell King	select ARCH_SPARSEMEM_ENABLE
6115cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
6121da177e4SLinus Torvalds	help
6131da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
6141da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
6151da177e4SLinus Torvalds
6161da177e4SLinus Torvaldsconfig ARCH_SA1100
6171da177e4SLinus Torvalds	bool "SA1100-based"
618c750815eSRussell King	select CPU_SA1100
619f7e68bbfSRussell King	select ISA
62005944d74SRussell King	select ARCH_SPARSEMEM_ENABLE
621034d2f5aSAl Viro	select ARCH_MTD_XIP
62289c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
6231937f5b9SRussell King	select CPU_FREQ
6243e238be2SRussell King	select GENERIC_CLOCKEVENTS
6259483a578SDavid Brownell	select HAVE_CLK
6263e238be2SRussell King	select TICK_ONESHOT
6277444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
628f999b8bdSMartin Michlmayr	help
629f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
6301da177e4SLinus Torvalds
6311da177e4SLinus Torvaldsconfig ARCH_S3C2410
63263b1f51bSBen Dooks	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
6330a938b97SDavid Brownell	select GENERIC_GPIO
6349d56c02aSBen Dooks	select ARCH_HAS_CPUFREQ
6359483a578SDavid Brownell	select HAVE_CLK
6365cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
6371da177e4SLinus Torvalds	help
6381da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
6391da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
640f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
6411da177e4SLinus Torvalds
64263b1f51bSBen Dooks	  Note, the S3C2416 and the S3C2450 are so close that they even share
64363b1f51bSBen Dooks	  the same SoC ID code. This means that there is no seperate machine
64463b1f51bSBen Dooks	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
64563b1f51bSBen Dooks
646a08ab637SBen Dooksconfig ARCH_S3C64XX
647a08ab637SBen Dooks	bool "Samsung S3C64XX"
64889f1fa08SBen Dooks	select PLAT_SAMSUNG
64989f0ce72SBen Dooks	select CPU_V6
65089f0ce72SBen Dooks	select ARM_VIC
651a08ab637SBen Dooks	select HAVE_CLK
65289f0ce72SBen Dooks	select NO_IOPORT
6535cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
65489c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
65589f0ce72SBen Dooks	select ARCH_REQUIRE_GPIOLIB
65689f0ce72SBen Dooks	select SAMSUNG_CLKSRC
65789f0ce72SBen Dooks	select SAMSUNG_IRQ_VIC_TIMER
65889f0ce72SBen Dooks	select SAMSUNG_IRQ_UART
65989f0ce72SBen Dooks	select S3C_GPIO_TRACK
66089f0ce72SBen Dooks	select S3C_GPIO_PULL_UPDOWN
66189f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C24XX
66289f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C64XX
66389f0ce72SBen Dooks	select S3C_DEV_NAND
66489f0ce72SBen Dooks	select USB_ARCH_HAS_OHCI
66589f0ce72SBen Dooks	select SAMSUNG_GPIOLIB_4BIT
666a08ab637SBen Dooks	help
667a08ab637SBen Dooks	  Samsung S3C64XX series based systems
668a08ab637SBen Dooks
669c4ffccddSKukjin Kimconfig ARCH_S5P6440
670c4ffccddSKukjin Kim	bool "Samsung S5P6440"
671c4ffccddSKukjin Kim	select CPU_V6
672c4ffccddSKukjin Kim	select GENERIC_GPIO
673c4ffccddSKukjin Kim	select HAVE_CLK
674925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
675c4ffccddSKukjin Kim	help
676c4ffccddSKukjin Kim	  Samsung S5P6440 CPU based systems
677c4ffccddSKukjin Kim
678550db7f1SKukjin Kimconfig ARCH_S5P6442
679550db7f1SKukjin Kim	bool "Samsung S5P6442"
680550db7f1SKukjin Kim	select CPU_V6
681550db7f1SKukjin Kim	select GENERIC_GPIO
682550db7f1SKukjin Kim	select HAVE_CLK
683925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
684550db7f1SKukjin Kim	help
685550db7f1SKukjin Kim	  Samsung S5P6442 CPU based systems
686550db7f1SKukjin Kim
687acc84707SMarek Szyprowskiconfig ARCH_S5PC100
688acc84707SMarek Szyprowski	bool "Samsung S5PC100"
6895a7652f2SByungho Min	select GENERIC_GPIO
6905a7652f2SByungho Min	select HAVE_CLK
6915a7652f2SByungho Min	select CPU_V7
692d6d502faSKukjin Kim	select ARM_L1_CACHE_SHIFT_6
693925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
6945a7652f2SByungho Min	help
695acc84707SMarek Szyprowski	  Samsung S5PC100 series based systems
6965a7652f2SByungho Min
697170f4e42SKukjin Kimconfig ARCH_S5PV210
698170f4e42SKukjin Kim	bool "Samsung S5PV210/S5PC110"
699170f4e42SKukjin Kim	select CPU_V7
700170f4e42SKukjin Kim	select GENERIC_GPIO
701170f4e42SKukjin Kim	select HAVE_CLK
702170f4e42SKukjin Kim	select ARM_L1_CACHE_SHIFT_6
703925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
704170f4e42SKukjin Kim	help
705170f4e42SKukjin Kim	  Samsung S5PV210/S5PC110 series based systems
706170f4e42SKukjin Kim
7071da177e4SLinus Torvaldsconfig ARCH_SHARK
7081da177e4SLinus Torvalds	bool "Shark"
709c750815eSRussell King	select CPU_SA110
710f7e68bbfSRussell King	select ISA
711f7e68bbfSRussell King	select ISA_DMA
7123bca103aSNicolas Pitre	select ZONE_DMA
713f7e68bbfSRussell King	select PCI
7145cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
715f999b8bdSMartin Michlmayr	help
716f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
717f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
7181da177e4SLinus Torvalds
7191da177e4SLinus Torvaldsconfig ARCH_LH7A40X
7201da177e4SLinus Torvalds	bool "Sharp LH7A40X"
721c750815eSRussell King	select CPU_ARM922T
7224ba3f7c5SRussell King	select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
7234ba3f7c5SRussell King	select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
7245cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
7251da177e4SLinus Torvalds	help
7261da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
7271da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
7281da177e4SLinus Torvalds	  core with a wide array of integrated devices for
7291da177e4SLinus Torvalds	  hand-held and low-power applications.
7301da177e4SLinus Torvalds
731d98aac75SLinus Walleijconfig ARCH_U300
732d98aac75SLinus Walleij	bool "ST-Ericsson U300 Series"
733d98aac75SLinus Walleij	depends on MMU
734d98aac75SLinus Walleij	select CPU_ARM926T
735bc581770SLinus Walleij	select HAVE_TCM
736d98aac75SLinus Walleij	select ARM_AMBA
737d98aac75SLinus Walleij	select ARM_VIC
738d98aac75SLinus Walleij	select GENERIC_CLOCKEVENTS
739d98aac75SLinus Walleij	select COMMON_CLKDEV
740d98aac75SLinus Walleij	select GENERIC_GPIO
741d98aac75SLinus Walleij	help
742d98aac75SLinus Walleij	  Support for ST-Ericsson U300 series mobile platforms.
743d98aac75SLinus Walleij
744ccf50e23SRussell Kingconfig ARCH_U8500
745ccf50e23SRussell King	bool "ST-Ericsson U8500 Series"
746ccf50e23SRussell King	select CPU_V7
747ccf50e23SRussell King	select ARM_AMBA
748ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
749ccf50e23SRussell King	select COMMON_CLKDEV
75094bdc0e2SRabin Vincent	select ARCH_REQUIRE_GPIOLIB
751ccf50e23SRussell King	help
752ccf50e23SRussell King	  Support for ST-Ericsson's Ux500 architecture
753ccf50e23SRussell King
754ccf50e23SRussell Kingconfig ARCH_NOMADIK
755ccf50e23SRussell King	bool "STMicroelectronics Nomadik"
756ccf50e23SRussell King	select ARM_AMBA
757ccf50e23SRussell King	select ARM_VIC
758ccf50e23SRussell King	select CPU_ARM926T
759ccf50e23SRussell King	select COMMON_CLKDEV
760ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
761ccf50e23SRussell King	select ARCH_REQUIRE_GPIOLIB
762ccf50e23SRussell King	help
763ccf50e23SRussell King	  Support for the Nomadik platform by ST-Ericsson
764ccf50e23SRussell King
7657c6337e2SKevin Hilmanconfig ARCH_DAVINCI
7667c6337e2SKevin Hilman	bool "TI DaVinci"
7677c6337e2SKevin Hilman	select GENERIC_CLOCKEVENTS
768dce1115bSDavid Brownell	select ARCH_REQUIRE_GPIOLIB
7693bca103aSNicolas Pitre	select ZONE_DMA
7709232fcc9SKevin Hilman	select HAVE_IDE
771c5b736d0SKevin Hilman	select COMMON_CLKDEV
77220e9969bSDavid Brownell	select GENERIC_ALLOCATOR
773ae88e05aSSekhar Nori	select ARCH_HAS_HOLES_MEMORYMODEL
7747c6337e2SKevin Hilman	help
7757c6337e2SKevin Hilman	  Support for TI's DaVinci platform.
7767c6337e2SKevin Hilman
7773b938be6SRussell Kingconfig ARCH_OMAP
7783b938be6SRussell King	bool "TI OMAP"
7799483a578SDavid Brownell	select HAVE_CLK
7807444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
78189c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
78206cad098SKevin Hilman	select GENERIC_CLOCKEVENTS
7839af915daSSriram	select ARCH_HAS_HOLES_MEMORYMODEL
7843b938be6SRussell King	help
7853b938be6SRussell King	  Support for TI's OMAP platform (OMAP1 and OMAP2).
7863b938be6SRussell King
787cee37e50Sviresh kumarconfig PLAT_SPEAR
788cee37e50Sviresh kumar	bool "ST SPEAr"
789cee37e50Sviresh kumar	select ARM_AMBA
790cee37e50Sviresh kumar	select ARCH_REQUIRE_GPIOLIB
791cee37e50Sviresh kumar	select COMMON_CLKDEV
792cee37e50Sviresh kumar	select GENERIC_CLOCKEVENTS
793cee37e50Sviresh kumar	select HAVE_CLK
794cee37e50Sviresh kumar	help
795cee37e50Sviresh kumar	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
796cee37e50Sviresh kumar
7971da177e4SLinus Torvaldsendchoice
7981da177e4SLinus Torvalds
799ccf50e23SRussell King#
800ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname.  However, plat-*
801ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the
802ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source.
803ccf50e23SRussell King#
80495b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig"
80595b8f20fSRussell King
80695b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig"
80795b8f20fSRussell King
80895b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig"
80995b8f20fSRussell King
8101da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
8111da177e4SLinus Torvalds
812d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig"
813d94f944eSAnton Vorontsov
81495b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig"
81595b8f20fSRussell King
81695b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig"
81795b8f20fSRussell King
818e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
819e7736d47SLennert Buytenhek
8201da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
8211da177e4SLinus Torvalds
82259d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig"
82359d3a193SPaulius Zaleckas
82495b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig"
82595b8f20fSRussell King
8261da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
8271da177e4SLinus Torvalds
8283f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig"
8293f7e5815SLennert Buytenhek
8303f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig"
8311da177e4SLinus Torvalds
832285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig"
833285f5fa7SDan Williams
8341da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
8351da177e4SLinus Torvalds
8361da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
8371da177e4SLinus Torvalds
838c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig"
839c4713074SLennert Buytenhek
84095b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig"
84195b8f20fSRussell King
84295b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig"
84395b8f20fSRussell King
84495b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig"
84595b8f20fSRussell King
846777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig"
847777f9bebSLennert Buytenhek
84895b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig"
84995b8f20fSRussell King
850794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig"
851794d15b2SStanislav Samsonov
85295b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig"
8531da177e4SLinus Torvalds
85495b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig"
85549cbe786SEric Miao
85695b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig"
85795b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig"
85895b8f20fSRussell King
85995b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig"
8601da177e4SLinus Torvalds
861d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig"
862d91a8910SRussell King
863d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
864d48af15eSTony Lindgren
865d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
8661da177e4SLinus Torvalds
8671dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
8681dbae815STony Lindgren
8699dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig"
870585cf175STzachi Perelstein
87195b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig"
87295b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig"
8731da177e4SLinus Torvalds
87495b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig"
87595b8f20fSRussell King
87695b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig"
87795b8f20fSRussell King
87895b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig"
879edabd38eSSaeed Bishara
880cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig"
881a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig"
882c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig"
883a21765a7SBen Dooks
884cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig"
885a21765a7SBen Dooks
886a21765a7SBen Dooksif ARCH_S3C2410
887a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig"
8881da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
889a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig"
890f1290a49SYauhen Kharuzhysource "arch/arm/mach-s3c2416/Kconfig"
891a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig"
892e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig"
893a21765a7SBen Dooksendif
8941da177e4SLinus Torvalds
895a08ab637SBen Dooksif ARCH_S3C64XX
896431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig"
897a08ab637SBen Dooksendif
898a08ab637SBen Dooks
899c4ffccddSKukjin Kimsource "arch/arm/mach-s5p6440/Kconfig"
900c4ffccddSKukjin Kim
901550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig"
9027bd0f2f5Sdmitry pervushin
9035a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig"
9045a7652f2SByungho Min
905170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig"
906170f4e42SKukjin Kim
907882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig"
9081da177e4SLinus Torvalds
909882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig"
9109e73c84cSBrian Swetland
91195b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig"
91252c543f9SQuinn Jensen
91395b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig"
9141da177e4SLinus Torvalds
9151da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
9161da177e4SLinus Torvalds
917ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig"
918ceade897SRussell King
9197ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig"
9207ec80ddfSwanzongshun
9211da177e4SLinus Torvalds# Definitions to make life easier
9221da177e4SLinus Torvaldsconfig ARCH_ACORN
9231da177e4SLinus Torvalds	bool
9241da177e4SLinus Torvalds
9257ae1f7ecSLennert Buytenhekconfig PLAT_IOP
9267ae1f7ecSLennert Buytenhek	bool
927469d3044SMikael Pettersson	select GENERIC_CLOCKEVENTS
9287ae1f7ecSLennert Buytenhek
92969b02f6aSLennert Buytenhekconfig PLAT_ORION
93069b02f6aSLennert Buytenhek	bool
93169b02f6aSLennert Buytenhek
932bd5ce433SEric Miaoconfig PLAT_PXA
933bd5ce433SEric Miao	bool
934bd5ce433SEric Miao
935f4b8b319SRussell Kingconfig PLAT_VERSATILE
936f4b8b319SRussell King	bool
937f4b8b319SRussell King
938e3887714SRussell Kingconfig ARM_TIMER_SP804
939e3887714SRussell King	bool
940e3887714SRussell King
9411da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
9421da177e4SLinus Torvalds
943afe4b25eSLennert Buytenhekconfig IWMMXT
944afe4b25eSLennert Buytenhek	bool "Enable iWMMXt support"
94540305a58SEric Miao	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
94640305a58SEric Miao	default y if PXA27x || PXA3xx || ARCH_MMP
947afe4b25eSLennert Buytenhek	help
948afe4b25eSLennert Buytenhek	  Enable support for iWMMXt context switching at run time if
949afe4b25eSLennert Buytenhek	  running on a CPU that supports it.
950afe4b25eSLennert Buytenhek
9511da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
9521da177e4SLinus Torvaldsconfig XSCALE_PMU
9531da177e4SLinus Torvalds	bool
9541da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
9551da177e4SLinus Torvalds	default y
9561da177e4SLinus Torvalds
9570f4f0672SJamie Ilesconfig CPU_HAS_PMU
9580f4f0672SJamie Iles	depends on CPU_V6 || CPU_V7 || XSCALE_PMU
9590f4f0672SJamie Iles	default y
9600f4f0672SJamie Iles	bool
9610f4f0672SJamie Iles
9623b93e7b0SHyok S. Choiif !MMU
9633b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
9643b93e7b0SHyok S. Choiendif
9653b93e7b0SHyok S. Choi
9669cba3cccSCatalin Marinasconfig ARM_ERRATA_411920
9679cba3cccSCatalin Marinas	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
9689cba3cccSCatalin Marinas	depends on CPU_V6 && !SMP
9699cba3cccSCatalin Marinas	help
9709cba3cccSCatalin Marinas	  Invalidation of the Instruction Cache operation can
9719cba3cccSCatalin Marinas	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
9729cba3cccSCatalin Marinas	  It does not affect the MPCore. This option enables the ARM Ltd.
9739cba3cccSCatalin Marinas	  recommended workaround.
9749cba3cccSCatalin Marinas
9757ce236fcSCatalin Marinasconfig ARM_ERRATA_430973
9767ce236fcSCatalin Marinas	bool "ARM errata: Stale prediction on replaced interworking branch"
9777ce236fcSCatalin Marinas	depends on CPU_V7
9787ce236fcSCatalin Marinas	help
9797ce236fcSCatalin Marinas	  This option enables the workaround for the 430973 Cortex-A8
9807ce236fcSCatalin Marinas	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
9817ce236fcSCatalin Marinas	  interworking branch is replaced with another code sequence at the
9827ce236fcSCatalin Marinas	  same virtual address, whether due to self-modifying code or virtual
9837ce236fcSCatalin Marinas	  to physical address re-mapping, Cortex-A8 does not recover from the
9847ce236fcSCatalin Marinas	  stale interworking branch prediction. This results in Cortex-A8
9857ce236fcSCatalin Marinas	  executing the new code sequence in the incorrect ARM or Thumb state.
9867ce236fcSCatalin Marinas	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
9877ce236fcSCatalin Marinas	  and also flushes the branch target cache at every context switch.
9887ce236fcSCatalin Marinas	  Note that setting specific bits in the ACTLR register may not be
9897ce236fcSCatalin Marinas	  available in non-secure mode.
9907ce236fcSCatalin Marinas
991855c551fSCatalin Marinasconfig ARM_ERRATA_458693
992855c551fSCatalin Marinas	bool "ARM errata: Processor deadlock when a false hazard is created"
993855c551fSCatalin Marinas	depends on CPU_V7
994855c551fSCatalin Marinas	help
995855c551fSCatalin Marinas	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
996855c551fSCatalin Marinas	  erratum. For very specific sequences of memory operations, it is
997855c551fSCatalin Marinas	  possible for a hazard condition intended for a cache line to instead
998855c551fSCatalin Marinas	  be incorrectly associated with a different cache line. This false
999855c551fSCatalin Marinas	  hazard might then cause a processor deadlock. The workaround enables
1000855c551fSCatalin Marinas	  the L1 caching of the NEON accesses and disables the PLD instruction
1001855c551fSCatalin Marinas	  in the ACTLR register. Note that setting specific bits in the ACTLR
1002855c551fSCatalin Marinas	  register may not be available in non-secure mode.
1003855c551fSCatalin Marinas
10040516e464SCatalin Marinasconfig ARM_ERRATA_460075
10050516e464SCatalin Marinas	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
10060516e464SCatalin Marinas	depends on CPU_V7
10070516e464SCatalin Marinas	help
10080516e464SCatalin Marinas	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
10090516e464SCatalin Marinas	  erratum. Any asynchronous access to the L2 cache may encounter a
10100516e464SCatalin Marinas	  situation in which recent store transactions to the L2 cache are lost
10110516e464SCatalin Marinas	  and overwritten with stale memory contents from external memory. The
10120516e464SCatalin Marinas	  workaround disables the write-allocate mode for the L2 cache via the
10130516e464SCatalin Marinas	  ACTLR register. Note that setting specific bits in the ACTLR register
10140516e464SCatalin Marinas	  may not be available in non-secure mode.
10150516e464SCatalin Marinas
10169e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369
10179e65582aSSantosh Shilimkar	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
10189e65582aSSantosh Shilimkar	depends on CACHE_L2X0 && ARCH_OMAP4
10199e65582aSSantosh Shilimkar	help
10209e65582aSSantosh Shilimkar	   The PL310 L2 cache controller implements three types of Clean &
10219e65582aSSantosh Shilimkar	   Invalidate maintenance operations: by Physical Address
10229e65582aSSantosh Shilimkar	   (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
10239e65582aSSantosh Shilimkar	   They are architecturally defined to behave as the execution of a
10249e65582aSSantosh Shilimkar	   clean operation followed immediately by an invalidate operation,
10259e65582aSSantosh Shilimkar	   both performing to the same memory location. This functionality
10269e65582aSSantosh Shilimkar	   is not correctly implemented in PL310 as clean lines are not
10279e65582aSSantosh Shilimkar	   invalidated as a result of these operations. Note that this errata
10289e65582aSSantosh Shilimkar	   uses Texas Instrument's secure monitor api.
10291da177e4SLinus Torvaldsendmenu
10301da177e4SLinus Torvalds
10311da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
10321da177e4SLinus Torvalds
10331da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
10341da177e4SLinus Torvalds	int
10351da177e4SLinus Torvalds	depends on SA1111
10361da177e4SLinus Torvalds	default "9"
10371da177e4SLinus Torvalds
10381da177e4SLinus Torvaldsmenu "Bus support"
10391da177e4SLinus Torvalds
10401da177e4SLinus Torvaldsconfig ARM_AMBA
10411da177e4SLinus Torvalds	bool
10421da177e4SLinus Torvalds
10431da177e4SLinus Torvaldsconfig ISA
10441da177e4SLinus Torvalds	bool
10451da177e4SLinus Torvalds	help
10461da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
10471da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
10481da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
10491da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
10501da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
10511da177e4SLinus Torvalds
1052065909b9SRussell King# Select ISA DMA controller support
10531da177e4SLinus Torvaldsconfig ISA_DMA
10541da177e4SLinus Torvalds	bool
1055065909b9SRussell King	select ISA_DMA_API
10561da177e4SLinus Torvalds
1057065909b9SRussell King# Select ISA DMA interface
10585cae841bSAl Viroconfig ISA_DMA_API
10595cae841bSAl Viro	bool
10605cae841bSAl Viro
10611da177e4SLinus Torvaldsconfig PCI
1062a0113a99SMike Rapoport	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
10631da177e4SLinus Torvalds	help
10641da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
10651da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
10661da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
10671da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
10681da177e4SLinus Torvalds
106952882173SAnton Vorontsovconfig PCI_DOMAINS
107052882173SAnton Vorontsov	bool
107152882173SAnton Vorontsov	depends on PCI
107252882173SAnton Vorontsov
107336e23590SMatthew Wilcoxconfig PCI_SYSCALL
107436e23590SMatthew Wilcox	def_bool PCI
107536e23590SMatthew Wilcox
10761da177e4SLinus Torvalds# Select the host bridge type
10771da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
10781da177e4SLinus Torvalds	bool
10791da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
10801da177e4SLinus Torvalds	default y
10811da177e4SLinus Torvalds
1082a0113a99SMike Rapoportconfig PCI_HOST_ITE8152
1083a0113a99SMike Rapoport	bool
1084a0113a99SMike Rapoport	depends on PCI && MACH_ARMCORE
1085a0113a99SMike Rapoport	default y
1086a0113a99SMike Rapoport	select DMABOUNCE
1087a0113a99SMike Rapoport
10881da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
10891da177e4SLinus Torvalds
10901da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
10911da177e4SLinus Torvalds
10921da177e4SLinus Torvaldsendmenu
10931da177e4SLinus Torvalds
10941da177e4SLinus Torvaldsmenu "Kernel Features"
10951da177e4SLinus Torvalds
10960567a0c0SKevin Hilmansource "kernel/time/Kconfig"
10970567a0c0SKevin Hilman
10981da177e4SLinus Torvaldsconfig SMP
10991da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
110042578c82SRussell King	depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
110159ac59f6SRussell King		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
110259ac59f6SRussell King		 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1103bc28248eSRussell King	depends on GENERIC_CLOCKEVENTS
1104f6dd9fa5SJens Axboe	select USE_GENERIC_SMP_HELPERS
110559ac59f6SRussell King	select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
11061da177e4SLinus Torvalds	help
11071da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
11081da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
11091da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
11101da177e4SLinus Torvalds
11111da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
11121da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
11131da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
11141da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
11151da177e4SLinus Torvalds	  run faster if you say N here.
11161da177e4SLinus Torvalds
111703502faaSAdrian Bunk	  See also <file:Documentation/i386/IO-APIC.txt>,
11181da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
11191da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
11201da177e4SLinus Torvalds
11211da177e4SLinus Torvalds	  If you don't know what to do here, say N.
11221da177e4SLinus Torvalds
1123a8cbcd92SRussell Kingconfig HAVE_ARM_SCU
1124a8cbcd92SRussell King	bool
1125a8cbcd92SRussell King	depends on SMP
1126a8cbcd92SRussell King	help
1127a8cbcd92SRussell King	  This option enables support for the ARM system coherency unit
1128a8cbcd92SRussell King
1129f32f4ce2SRussell Kingconfig HAVE_ARM_TWD
1130f32f4ce2SRussell King	bool
1131f32f4ce2SRussell King	depends on SMP
1132f32f4ce2SRussell King	help
1133f32f4ce2SRussell King	  This options enables support for the ARM timer and watchdog unit
1134f32f4ce2SRussell King
11358d5796d2SLennert Buytenhekchoice
11368d5796d2SLennert Buytenhek	prompt "Memory split"
11378d5796d2SLennert Buytenhek	default VMSPLIT_3G
11388d5796d2SLennert Buytenhek	help
11398d5796d2SLennert Buytenhek	  Select the desired split between kernel and user memory.
11408d5796d2SLennert Buytenhek
11418d5796d2SLennert Buytenhek	  If you are not absolutely sure what you are doing, leave this
11428d5796d2SLennert Buytenhek	  option alone!
11438d5796d2SLennert Buytenhek
11448d5796d2SLennert Buytenhek	config VMSPLIT_3G
11458d5796d2SLennert Buytenhek		bool "3G/1G user/kernel split"
11468d5796d2SLennert Buytenhek	config VMSPLIT_2G
11478d5796d2SLennert Buytenhek		bool "2G/2G user/kernel split"
11488d5796d2SLennert Buytenhek	config VMSPLIT_1G
11498d5796d2SLennert Buytenhek		bool "1G/3G user/kernel split"
11508d5796d2SLennert Buytenhekendchoice
11518d5796d2SLennert Buytenhek
11528d5796d2SLennert Buytenhekconfig PAGE_OFFSET
11538d5796d2SLennert Buytenhek	hex
11548d5796d2SLennert Buytenhek	default 0x40000000 if VMSPLIT_1G
11558d5796d2SLennert Buytenhek	default 0x80000000 if VMSPLIT_2G
11568d5796d2SLennert Buytenhek	default 0xC0000000
11578d5796d2SLennert Buytenhek
11581da177e4SLinus Torvaldsconfig NR_CPUS
11591da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
11601da177e4SLinus Torvalds	range 2 32
11611da177e4SLinus Torvalds	depends on SMP
11621da177e4SLinus Torvalds	default "4"
11631da177e4SLinus Torvalds
1164a054a811SRussell Kingconfig HOTPLUG_CPU
1165a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1166a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
1167a054a811SRussell King	help
1168a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
1169a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
1170a054a811SRussell King
117137ee16aeSRussell Kingconfig LOCAL_TIMERS
117237ee16aeSRussell King	bool "Use local timer interrupts"
117342578c82SRussell King	depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1174850265e8SSrinidhi Kasagar		REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
117537ee16aeSRussell King	default y
1176850265e8SSrinidhi Kasagar	select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
117737ee16aeSRussell King	help
117837ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
117937ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
118037ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
118137ee16aeSRussell King	  "thundering herd" at every timer tick.
118237ee16aeSRussell King
1183d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt
11841da177e4SLinus Torvalds
1185f8065813SRussell Kingconfig HZ
1186f8065813SRussell King	int
1187f8065813SRussell King	default 128 if ARCH_L7200
1188170f4e42SKukjin Kim	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1189bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
11905248c657SDavid Brownell	default AT91_TIMER_HZ if ARCH_AT91
1191f8065813SRussell King	default 100
1192f8065813SRussell King
119316c79651SCatalin Marinasconfig THUMB2_KERNEL
119416c79651SCatalin Marinas	bool "Compile the kernel in Thumb-2 mode"
119516c79651SCatalin Marinas	depends on CPU_V7 && EXPERIMENTAL
119616c79651SCatalin Marinas	select AEABI
119716c79651SCatalin Marinas	select ARM_ASM_UNIFIED
119816c79651SCatalin Marinas	help
119916c79651SCatalin Marinas	  By enabling this option, the kernel will be compiled in
120016c79651SCatalin Marinas	  Thumb-2 mode. A compiler/assembler that understand the unified
120116c79651SCatalin Marinas	  ARM-Thumb syntax is needed.
120216c79651SCatalin Marinas
120316c79651SCatalin Marinas	  If unsure, say N.
120416c79651SCatalin Marinas
12050becb088SCatalin Marinasconfig ARM_ASM_UNIFIED
12060becb088SCatalin Marinas	bool
12070becb088SCatalin Marinas
1208704bdda0SNicolas Pitreconfig AEABI
1209704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
1210704bdda0SNicolas Pitre	help
1211704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
1212704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
1213704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
1214704bdda0SNicolas Pitre
1215704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
1216704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
1217704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
1218704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
1219704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
1220704bdda0SNicolas Pitre
1221704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
1222704bdda0SNicolas Pitre
12236c90c872SNicolas Pitreconfig OABI_COMPAT
1224a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
122561c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
12266c90c872SNicolas Pitre	default y
12276c90c872SNicolas Pitre	help
12286c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
12296c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
12306c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
12316c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
12326c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
12336c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
12346c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
12356c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
12366c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
12376c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
12386c90c872SNicolas Pitre	  at all). If in doubt say Y.
12396c90c872SNicolas Pitre
1240eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL
1241e80d6a24SMel Gorman	bool
1242e80d6a24SMel Gorman
124307a2f737SRussell King# Discontigmem is deprecated
12443f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
12451da177e4SLinus Torvalds	bool
12461da177e4SLinus Torvalds
124705944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE
124805944d74SRussell King	bool
124905944d74SRussell King
125007a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT
125107a2f737SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
125207a2f737SRussell King
125305944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL
125407a2f737SRussell King	def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
125505944d74SRussell King
1256c80d79d7SYasunori Gotoconfig NODES_SHIFT
1257c80d79d7SYasunori Goto	int
1258c80d79d7SYasunori Goto	default "4" if ARCH_LH7A40X
1259c80d79d7SYasunori Goto	default "2"
1260c80d79d7SYasunori Goto	depends on NEED_MULTIPLE_NODES
1261c80d79d7SYasunori Goto
1262053a96caSNicolas Pitreconfig HIGHMEM
1263053a96caSNicolas Pitre	bool "High Memory Support (EXPERIMENTAL)"
1264053a96caSNicolas Pitre	depends on MMU && EXPERIMENTAL
1265053a96caSNicolas Pitre	help
1266053a96caSNicolas Pitre	  The address space of ARM processors is only 4 Gigabytes large
1267053a96caSNicolas Pitre	  and it has to accommodate user address space, kernel address
1268053a96caSNicolas Pitre	  space as well as some memory mapped IO. That means that, if you
1269053a96caSNicolas Pitre	  have a large amount of physical memory and/or IO, not all of the
1270053a96caSNicolas Pitre	  memory can be "permanently mapped" by the kernel. The physical
1271053a96caSNicolas Pitre	  memory that is not permanently mapped is called "high memory".
1272053a96caSNicolas Pitre
1273053a96caSNicolas Pitre	  Depending on the selected kernel/user memory split, minimum
1274053a96caSNicolas Pitre	  vmalloc space and actual amount of RAM, you may not need this
1275053a96caSNicolas Pitre	  option which should result in a slightly faster kernel.
1276053a96caSNicolas Pitre
1277053a96caSNicolas Pitre	  If unsure, say n.
1278053a96caSNicolas Pitre
127965cec8e3SRussell Kingconfig HIGHPTE
128065cec8e3SRussell King	bool "Allocate 2nd-level pagetables from highmem"
128165cec8e3SRussell King	depends on HIGHMEM
128265cec8e3SRussell King	depends on !OUTER_CACHE
128365cec8e3SRussell King
12841b8873a0SJamie Ilesconfig HW_PERF_EVENTS
12851b8873a0SJamie Iles	bool "Enable hardware performance counter support for perf events"
1286fe166148SWill Deacon	depends on PERF_EVENTS && CPU_HAS_PMU
12871b8873a0SJamie Iles	default y
12881b8873a0SJamie Iles	help
12891b8873a0SJamie Iles	  Enable hardware performance counter support for perf events. If
12901b8873a0SJamie Iles	  disabled, perf events will use software events only.
12911b8873a0SJamie Iles
12923f22ab27SDave Hansensource "mm/Kconfig"
12933f22ab27SDave Hansen
12941da177e4SLinus Torvaldsconfig LEDS
12951da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
1296e055d5bfSAdrian Bunk	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
12978c8fdbc9SSascha Hauer		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
12981da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
12991da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
130073a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
130125329671SJürgen Schindele		   ARCH_AT91 || ARCH_DAVINCI || \
1302ff3042fbSColin Tuckley		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
13031da177e4SLinus Torvalds	help
13041da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
13051da177e4SLinus Torvalds	  to provide useful information about your current system status.
13061da177e4SLinus Torvalds
13071da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
13081da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
13091da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
13101da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
13111da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
13121da177e4SLinus Torvalds	  system, but the driver will do nothing.
13131da177e4SLinus Torvalds
13141da177e4SLinus Torvaldsconfig LEDS_TIMER
13151da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1316eebdf7d7SDavid Brownell			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1317eebdf7d7SDavid Brownell			    || MACH_OMAP_PERSEUS2
13181da177e4SLinus Torvalds	depends on LEDS
13190567a0c0SKevin Hilman	depends on !GENERIC_CLOCKEVENTS
13201da177e4SLinus Torvalds	default y if ARCH_EBSA110
13211da177e4SLinus Torvalds	help
13221da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
13231da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
13241da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
13251da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
13261da177e4SLinus Torvalds	  debugging unstable kernels.
13271da177e4SLinus Torvalds
13281da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
13291da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
13301da177e4SLinus Torvalds	  will overrule the CPU usage LED.
13311da177e4SLinus Torvalds
13321da177e4SLinus Torvaldsconfig LEDS_CPU
13331da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1334eebdf7d7SDavid Brownell			!ARCH_OMAP) \
1335eebdf7d7SDavid Brownell			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1336eebdf7d7SDavid Brownell			|| MACH_OMAP_PERSEUS2
13371da177e4SLinus Torvalds	depends on LEDS
13381da177e4SLinus Torvalds	help
13391da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
13401da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
13411da177e4SLinus Torvalds	  is not currently executing.
13421da177e4SLinus Torvalds
13431da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
13441da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
13451da177e4SLinus Torvalds	  will overrule the CPU usage LED.
13461da177e4SLinus Torvalds
13471da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
13481da177e4SLinus Torvalds	bool
1349f12d0d7cSHyok S. Choi	depends on CPU_CP15_MMU
13501da177e4SLinus Torvalds	default y if !ARCH_EBSA110
1351e119bfffSRussell King	select HAVE_PROC_CPU if PROC_FS
13521da177e4SLinus Torvalds	help
13531da177e4SLinus Torvalds	  ARM processors cannot fetch/store information which is not
13541da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
13551da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
13561da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
13571da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
13581da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
13591da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
13601da177e4SLinus Torvalds
136139ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY
136239ec58f3SLennert Buytenhek	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
136339ec58f3SLennert Buytenhek	depends on MMU && EXPERIMENTAL
136439ec58f3SLennert Buytenhek	default y if CPU_FEROCEON
136539ec58f3SLennert Buytenhek	help
136639ec58f3SLennert Buytenhek	  Implement faster copy_to_user and clear_user methods for CPU
136739ec58f3SLennert Buytenhek	  cores where a 8-word STM instruction give significantly higher
136839ec58f3SLennert Buytenhek	  memory write throughput than a sequence of individual 32bit stores.
136939ec58f3SLennert Buytenhek
137039ec58f3SLennert Buytenhek	  A possible side effect is a slight increase in scheduling latency
137139ec58f3SLennert Buytenhek	  between threads sharing the same address space if they invoke
137239ec58f3SLennert Buytenhek	  such copy operations with large buffers.
137339ec58f3SLennert Buytenhek
137439ec58f3SLennert Buytenhek	  However, if the CPU data cache is using a write-allocate mode,
137539ec58f3SLennert Buytenhek	  this option is unlikely to provide any performance gain.
137639ec58f3SLennert Buytenhek
137773a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT
137873a65b3fSUwe Kleine-König	bool "Provide old way to pass kernel parameters"
137973a65b3fSUwe Kleine-König	help
138073a65b3fSUwe Kleine-König	  This was deprecated in 2001 and announced to live on for 5 years.
138173a65b3fSUwe Kleine-König	  Some old boot loaders still use this way.
138273a65b3fSUwe Kleine-König
13831da177e4SLinus Torvaldsendmenu
13841da177e4SLinus Torvalds
13851da177e4SLinus Torvaldsmenu "Boot options"
13861da177e4SLinus Torvalds
13871da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
13881da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
13891da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
13901da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
13911da177e4SLinus Torvalds	default "0"
13921da177e4SLinus Torvalds	help
13931da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
13941da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
13951da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
13961da177e4SLinus Torvalds	  value in their defconfig file.
13971da177e4SLinus Torvalds
13981da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
13991da177e4SLinus Torvalds
14001da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
14011da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
14021da177e4SLinus Torvalds	default "0"
14031da177e4SLinus Torvalds	help
1404f8c440b2SDan Fandrich	  The base address of an area of read/write memory in the target
1405f8c440b2SDan Fandrich	  for the ROM-able zImage which must be available while the
1406f8c440b2SDan Fandrich	  decompressor is running. It must be large enough to hold the
1407f8c440b2SDan Fandrich	  entire decompressed kernel plus an additional 128 KiB.
1408f8c440b2SDan Fandrich	  Platforms which normally make use of ROM-able zImage formats
1409f8c440b2SDan Fandrich	  normally set this to a suitable value in their defconfig file.
14101da177e4SLinus Torvalds
14111da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
14121da177e4SLinus Torvalds
14131da177e4SLinus Torvaldsconfig ZBOOT_ROM
14141da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
14151da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
14161da177e4SLinus Torvalds	help
14171da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
14181da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
14191da177e4SLinus Torvalds
14201da177e4SLinus Torvaldsconfig CMDLINE
14211da177e4SLinus Torvalds	string "Default kernel command string"
14221da177e4SLinus Torvalds	default ""
14231da177e4SLinus Torvalds	help
14241da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
14251da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
14261da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
14271da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
14281da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
14291da177e4SLinus Torvalds
143092d2040dSAlexander Hollerconfig CMDLINE_FORCE
143192d2040dSAlexander Holler	bool "Always use the default kernel command string"
143292d2040dSAlexander Holler	depends on CMDLINE != ""
143392d2040dSAlexander Holler	help
143492d2040dSAlexander Holler	  Always use the default kernel command string, even if the boot
143592d2040dSAlexander Holler	  loader passes other arguments to the kernel.
143692d2040dSAlexander Holler	  This is useful if you cannot or don't want to change the
143792d2040dSAlexander Holler	  command-line options your boot loader passes to the kernel.
143892d2040dSAlexander Holler
143992d2040dSAlexander Holler	  If unsure, say N.
144092d2040dSAlexander Holler
14411da177e4SLinus Torvaldsconfig XIP_KERNEL
14421da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
14431da177e4SLinus Torvalds	depends on !ZBOOT_ROM
14441da177e4SLinus Torvalds	help
14451da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
14461da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
14471da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
14481da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
14491da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
14501da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
14511da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
14521da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
14531da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
14541da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
14551da177e4SLinus Torvalds
14561da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
14571da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
14581da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
14591da177e4SLinus Torvalds
14601da177e4SLinus Torvalds	  If unsure, say N.
14611da177e4SLinus Torvalds
14621da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
14631da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
14641da177e4SLinus Torvalds	depends on XIP_KERNEL
14651da177e4SLinus Torvalds	default "0x00080000"
14661da177e4SLinus Torvalds	help
14671da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
14681da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
14691da177e4SLinus Torvalds	  own flash usage.
14701da177e4SLinus Torvalds
1471c587e4a6SRichard Purdieconfig KEXEC
1472c587e4a6SRichard Purdie	bool "Kexec system call (EXPERIMENTAL)"
1473c587e4a6SRichard Purdie	depends on EXPERIMENTAL
1474c587e4a6SRichard Purdie	help
1475c587e4a6SRichard Purdie	  kexec is a system call that implements the ability to shutdown your
1476c587e4a6SRichard Purdie	  current kernel, and to start another kernel.  It is like a reboot
147701dd2fbfSMatt LaPlante	  but it is independent of the system firmware.   And like a reboot
1478c587e4a6SRichard Purdie	  you can start any kernel with it, not just Linux.
1479c587e4a6SRichard Purdie
1480c587e4a6SRichard Purdie	  It is an ongoing process to be certain the hardware in a machine
1481c587e4a6SRichard Purdie	  is properly shutdown, so do not be surprised if this code does not
1482c587e4a6SRichard Purdie	  initially work for you.  It may help to enable device hotplugging
1483c587e4a6SRichard Purdie	  support.
1484c587e4a6SRichard Purdie
14854cd9d6f7SRichard Purdieconfig ATAGS_PROC
14864cd9d6f7SRichard Purdie	bool "Export atags in procfs"
1487b98d7291SUli Luckas	depends on KEXEC
1488b98d7291SUli Luckas	default y
14894cd9d6f7SRichard Purdie	help
14904cd9d6f7SRichard Purdie	  Should the atags used to boot the kernel be exported in an "atags"
14914cd9d6f7SRichard Purdie	  file in procfs. Useful with kexec.
14924cd9d6f7SRichard Purdie
1493*e69edc79SEric Miaoconfig AUTO_ZRELADDR
1494*e69edc79SEric Miao	bool "Auto calculation of the decompressed kernel image address"
1495*e69edc79SEric Miao	depends on !ZBOOT_ROM && !ARCH_U300
1496*e69edc79SEric Miao	help
1497*e69edc79SEric Miao	  ZRELADDR is the physical address where the decompressed kernel
1498*e69edc79SEric Miao	  image will be placed. If AUTO_ZRELADDR is selected, the address
1499*e69edc79SEric Miao	  will be determined at run-time by masking the current IP with
1500*e69edc79SEric Miao	  0xf8000000. This assumes the zImage being placed in the first 128MB
1501*e69edc79SEric Miao	  from start of memory.
1502*e69edc79SEric Miao
1503*e69edc79SEric Miaoconfig ZRELADDR
1504*e69edc79SEric Miao	hex "Physical address of the decompressed kernel image"
1505*e69edc79SEric Miao	depends on !AUTO_ZRELADDR
1506*e69edc79SEric Miao	default 0x00008000 if ARCH_BCMRING ||\
1507*e69edc79SEric Miao		ARCH_CNS3XXX ||\
1508*e69edc79SEric Miao		ARCH_DOVE ||\
1509*e69edc79SEric Miao		ARCH_EBSA110 ||\
1510*e69edc79SEric Miao		ARCH_FOOTBRIDGE ||\
1511*e69edc79SEric Miao		ARCH_INTEGRATOR ||\
1512*e69edc79SEric Miao		ARCH_IOP13XX ||\
1513*e69edc79SEric Miao		ARCH_IOP33X ||\
1514*e69edc79SEric Miao		ARCH_IXP2000 ||\
1515*e69edc79SEric Miao		ARCH_IXP23XX ||\
1516*e69edc79SEric Miao		ARCH_IXP4XX ||\
1517*e69edc79SEric Miao		ARCH_KIRKWOOD ||\
1518*e69edc79SEric Miao		ARCH_KS8695 ||\
1519*e69edc79SEric Miao		ARCH_LOKI ||\
1520*e69edc79SEric Miao		ARCH_MMP ||\
1521*e69edc79SEric Miao		ARCH_MV78XX0 ||\
1522*e69edc79SEric Miao		ARCH_NOMADIK ||\
1523*e69edc79SEric Miao		ARCH_NUC93X ||\
1524*e69edc79SEric Miao		ARCH_NS9XXX ||\
1525*e69edc79SEric Miao		ARCH_ORION5X ||\
1526*e69edc79SEric Miao		ARCH_SPEAR3XX ||\
1527*e69edc79SEric Miao		ARCH_SPEAR6XX ||\
1528*e69edc79SEric Miao		ARCH_U8500 ||\
1529*e69edc79SEric Miao		ARCH_VERSATILE ||\
1530*e69edc79SEric Miao		ARCH_W90X900
1531*e69edc79SEric Miao	default 0x08008000 if ARCH_MX1 ||\
1532*e69edc79SEric Miao		ARCH_SHARK
1533*e69edc79SEric Miao	default 0x10008000 if ARCH_MSM ||\
1534*e69edc79SEric Miao		ARCH_OMAP1 ||\
1535*e69edc79SEric Miao		ARCH_RPC
1536*e69edc79SEric Miao	default 0x20008000 if ARCH_S5P6440 ||\
1537*e69edc79SEric Miao		ARCH_S5P6442 ||\
1538*e69edc79SEric Miao		ARCH_S5PC100 ||\
1539*e69edc79SEric Miao		ARCH_S5PV210
1540*e69edc79SEric Miao	default 0x30008000 if ARCH_S3C2410 ||\
1541*e69edc79SEric Miao		ARCH_S3C2400 ||\
1542*e69edc79SEric Miao		ARCH_S3C2412 ||\
1543*e69edc79SEric Miao		ARCH_S3C2416 ||\
1544*e69edc79SEric Miao		ARCH_S3C2440 ||\
1545*e69edc79SEric Miao		ARCH_S3C2443
1546*e69edc79SEric Miao	default 0x40008000 if ARCH_STMP378X ||\
1547*e69edc79SEric Miao		ARCH_STMP37XX ||\
1548*e69edc79SEric Miao		ARCH_SH7372 ||\
1549*e69edc79SEric Miao		ARCH_SH7377
1550*e69edc79SEric Miao	default 0x50008000 if ARCH_S3C64XX ||\
1551*e69edc79SEric Miao		ARCH_SH7367
1552*e69edc79SEric Miao	default 0x60008000 if ARCH_VEXPRESS
1553*e69edc79SEric Miao	default 0x80008000 if ARCH_MX25 ||\
1554*e69edc79SEric Miao		ARCH_MX3 ||\
1555*e69edc79SEric Miao		ARCH_NETX ||\
1556*e69edc79SEric Miao		ARCH_OMAP2PLUS ||\
1557*e69edc79SEric Miao		ARCH_PNX4008
1558*e69edc79SEric Miao	default 0x90008000 if ARCH_MX5 ||\
1559*e69edc79SEric Miao		ARCH_MX91231
1560*e69edc79SEric Miao	default 0xa0008000 if ARCH_IOP32X ||\
1561*e69edc79SEric Miao		ARCH_PXA ||\
1562*e69edc79SEric Miao		MACH_MX27
1563*e69edc79SEric Miao	default 0xc0008000 if ARCH_LH7A40X ||\
1564*e69edc79SEric Miao		MACH_MX21
1565*e69edc79SEric Miao	default 0xf0008000 if ARCH_AAEC2000 ||\
1566*e69edc79SEric Miao		ARCH_L7200
1567*e69edc79SEric Miao	default 0xc0028000 if ARCH_CLPS711X
1568*e69edc79SEric Miao	default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1569*e69edc79SEric Miao	default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1570*e69edc79SEric Miao	default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1571*e69edc79SEric Miao	default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1572*e69edc79SEric Miao	default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1573*e69edc79SEric Miao	default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1574*e69edc79SEric Miao	default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1575*e69edc79SEric Miao	default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1576*e69edc79SEric Miao	default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1577*e69edc79SEric Miao	default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1578*e69edc79SEric Miao	default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1579*e69edc79SEric Miao	default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1580*e69edc79SEric Miao	default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1581*e69edc79SEric Miao	default 0xc0208000 if ARCH_SA1100 && SA1111
1582*e69edc79SEric Miao	default 0xc0008000 if ARCH_SA1100 && !SA1111
1583*e69edc79SEric Miao	default 0x30108000 if ARCH_S3C2410 && PM_H1940
1584*e69edc79SEric Miao	default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1585*e69edc79SEric Miao	default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1586*e69edc79SEric Miao	help
1587*e69edc79SEric Miao	  ZRELADDR is the physical address where the decompressed kernel
1588*e69edc79SEric Miao	  image will be placed. ZRELADDR has to be specified when the
1589*e69edc79SEric Miao	  assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1590*e69edc79SEric Miao	  selected.
1591*e69edc79SEric Miao
15921da177e4SLinus Torvaldsendmenu
15931da177e4SLinus Torvalds
1594ac9d7efcSRussell Kingmenu "CPU Power Management"
15951da177e4SLinus Torvalds
159689c52ed4SBen Dooksif ARCH_HAS_CPUFREQ
15971da177e4SLinus Torvalds
15981da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
15991da177e4SLinus Torvalds
16001da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
16011da177e4SLinus Torvalds	bool
16021da177e4SLinus Torvalds
16031da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
16041da177e4SLinus Torvalds	bool
16051da177e4SLinus Torvalds
16061da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
16071da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
16081da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
16091da177e4SLinus Torvalds	default y
16101da177e4SLinus Torvalds	help
16111da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
16121da177e4SLinus Torvalds
16131da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
16141da177e4SLinus Torvalds
16151da177e4SLinus Torvalds	  If in doubt, say Y.
16161da177e4SLinus Torvalds
16179e2697ffSRussell Kingconfig CPU_FREQ_PXA
16189e2697ffSRussell King	bool
16199e2697ffSRussell King	depends on CPU_FREQ && ARCH_PXA && PXA25x
16209e2697ffSRussell King	default y
16219e2697ffSRussell King	select CPU_FREQ_DEFAULT_GOV_USERSPACE
16229e2697ffSRussell King
1623b3748dddSMark Brownconfig CPU_FREQ_S3C64XX
1624b3748dddSMark Brown	bool "CPUfreq support for Samsung S3C64XX CPUs"
1625b3748dddSMark Brown	depends on CPU_FREQ && CPU_S3C6410
1626b3748dddSMark Brown
16279d56c02aSBen Dooksconfig CPU_FREQ_S3C
16289d56c02aSBen Dooks	bool
16299d56c02aSBen Dooks	help
16309d56c02aSBen Dooks	  Internal configuration node for common cpufreq on Samsung SoC
16319d56c02aSBen Dooks
16329d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX
16339d56c02aSBen Dooks	bool "CPUfreq driver for Samsung S3C24XX series CPUs"
16349d56c02aSBen Dooks	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
16359d56c02aSBen Dooks	select CPU_FREQ_S3C
16369d56c02aSBen Dooks	help
16379d56c02aSBen Dooks	  This enables the CPUfreq driver for the Samsung S3C24XX family
16389d56c02aSBen Dooks	  of CPUs.
16399d56c02aSBen Dooks
16409d56c02aSBen Dooks	  For details, take a look at <file:Documentation/cpu-freq>.
16419d56c02aSBen Dooks
16429d56c02aSBen Dooks	  If in doubt, say N.
16439d56c02aSBen Dooks
16449d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL
16459d56c02aSBen Dooks	bool "Support CPUfreq changing of PLL frequency"
16469d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
16479d56c02aSBen Dooks	help
16489d56c02aSBen Dooks	  Compile in support for changing the PLL frequency from the
16499d56c02aSBen Dooks	  S3C24XX series CPUfreq driver. The PLL takes time to settle
16509d56c02aSBen Dooks	  after a frequency change, so by default it is not enabled.
16519d56c02aSBen Dooks
16529d56c02aSBen Dooks	  This also means that the PLL tables for the selected CPU(s) will
16539d56c02aSBen Dooks	  be built which may increase the size of the kernel image.
16549d56c02aSBen Dooks
16559d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG
16569d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver core"
16579d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
16589d56c02aSBen Dooks	help
16599d56c02aSBen Dooks	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
16609d56c02aSBen Dooks
16619d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG
16629d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver IO timing"
16639d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
16649d56c02aSBen Dooks	help
16659d56c02aSBen Dooks	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
16669d56c02aSBen Dooks
1667e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS
1668e6d197a6SBen Dooks	bool "Export debugfs for CPUFreq"
1669e6d197a6SBen Dooks	depends on CPU_FREQ_S3C24XX && DEBUG_FS
1670e6d197a6SBen Dooks	help
1671e6d197a6SBen Dooks	  Export status information via debugfs.
1672e6d197a6SBen Dooks
16731da177e4SLinus Torvaldsendif
16741da177e4SLinus Torvalds
1675ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig"
1676ac9d7efcSRussell King
1677ac9d7efcSRussell Kingendmenu
1678ac9d7efcSRussell King
16791da177e4SLinus Torvaldsmenu "Floating point emulation"
16801da177e4SLinus Torvalds
16811da177e4SLinus Torvaldscomment "At least one emulation must be selected"
16821da177e4SLinus Torvalds
16831da177e4SLinus Torvaldsconfig FPE_NWFPE
16841da177e4SLinus Torvalds	bool "NWFPE math emulation"
16858993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
16861da177e4SLinus Torvalds	---help---
16871da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
16881da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
16891da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
16901da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
16911da177e4SLinus Torvalds
16921da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
16931da177e4SLinus Torvalds	  early in the bootup.
16941da177e4SLinus Torvalds
16951da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
16961da177e4SLinus Torvalds	bool "Support extended precision"
1697bedf142bSLennert Buytenhek	depends on FPE_NWFPE
16981da177e4SLinus Torvalds	help
16991da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
17001da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
17011da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
17021da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
17031da177e4SLinus Torvalds	  floating point emulator without any good reason.
17041da177e4SLinus Torvalds
17051da177e4SLinus Torvalds	  You almost surely want to say N here.
17061da177e4SLinus Torvalds
17071da177e4SLinus Torvaldsconfig FPE_FASTFPE
17081da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
17098993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
17101da177e4SLinus Torvalds	---help---
17111da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
17121da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
17131da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
17141da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
17151da177e4SLinus Torvalds
17161da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
17171da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
17181da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
17191da177e4SLinus Torvalds	  choose NWFPE.
17201da177e4SLinus Torvalds
17211da177e4SLinus Torvaldsconfig VFP
17221da177e4SLinus Torvalds	bool "VFP-format floating point maths"
1723c00d4ffdSRussell King	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
17241da177e4SLinus Torvalds	help
17251da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
17261da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
17271da177e4SLinus Torvalds
17281da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
17291da177e4SLinus Torvalds	  release notes and additional status information.
17301da177e4SLinus Torvalds
17311da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
17321da177e4SLinus Torvalds
173325ebee02SCatalin Marinasconfig VFPv3
173425ebee02SCatalin Marinas	bool
173525ebee02SCatalin Marinas	depends on VFP
173625ebee02SCatalin Marinas	default y if CPU_V7
173725ebee02SCatalin Marinas
1738b5872db4SCatalin Marinasconfig NEON
1739b5872db4SCatalin Marinas	bool "Advanced SIMD (NEON) Extension support"
1740b5872db4SCatalin Marinas	depends on VFPv3 && CPU_V7
1741b5872db4SCatalin Marinas	help
1742b5872db4SCatalin Marinas	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1743b5872db4SCatalin Marinas	  Extension.
1744b5872db4SCatalin Marinas
17451da177e4SLinus Torvaldsendmenu
17461da177e4SLinus Torvalds
17471da177e4SLinus Torvaldsmenu "Userspace binary formats"
17481da177e4SLinus Torvalds
17491da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
17501da177e4SLinus Torvalds
17511da177e4SLinus Torvaldsconfig ARTHUR
17521da177e4SLinus Torvalds	tristate "RISC OS personality"
1753704bdda0SNicolas Pitre	depends on !AEABI
17541da177e4SLinus Torvalds	help
17551da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
17561da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
17571da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
17581da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
17591da177e4SLinus Torvalds	  will be called arthur).
17601da177e4SLinus Torvalds
17611da177e4SLinus Torvaldsendmenu
17621da177e4SLinus Torvalds
17631da177e4SLinus Torvaldsmenu "Power management options"
17641da177e4SLinus Torvalds
1765eceab4acSRussell Kingsource "kernel/power/Kconfig"
17661da177e4SLinus Torvalds
1767f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE
1768f4cb5700SJohannes Berg	def_bool y
1769f4cb5700SJohannes Berg
17701da177e4SLinus Torvaldsendmenu
17711da177e4SLinus Torvalds
1772d5950b43SSam Ravnborgsource "net/Kconfig"
1773d5950b43SSam Ravnborg
1774ac25150fSUwe Kleine-Königsource "drivers/Kconfig"
17751da177e4SLinus Torvalds
17761da177e4SLinus Torvaldssource "fs/Kconfig"
17771da177e4SLinus Torvalds
17781da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
17791da177e4SLinus Torvalds
17801da177e4SLinus Torvaldssource "security/Kconfig"
17811da177e4SLinus Torvalds
17821da177e4SLinus Torvaldssource "crypto/Kconfig"
17831da177e4SLinus Torvalds
17841da177e4SLinus Torvaldssource "lib/Kconfig"
1785