xref: /linux/arch/arm/Kconfig (revision 28bb7bc61a8cd48716d38d9c153fdc524f09870a)
11da177e4SLinus Torvaldsconfig ARM
21da177e4SLinus Torvalds	bool
31da177e4SLinus Torvalds	default y
4e17c6d56SDavid Woodhouse	select HAVE_AOUT
52064c946SAdrian Bunk	select HAVE_IDE
62778f620SRussell King	select HAVE_MEMBLOCK
712b824fbSAlessandro Zummo	select RTC_LIB
875e7153aSRalf Baechle	select SYS_SUPPORTS_APM_EMULATION
9d4c7b1f9SWill Deacon	select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
10fe166148SWill Deacon	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
115cbad0ebSJason Wessel	select HAVE_ARCH_KGDB
123f550096SMathieu Desnoyers	select HAVE_KPROBES if (!XIP_KERNEL)
139edddaa2SAnanth N Mavinakayanahalli	select HAVE_KRETPROBES if (HAVE_KPROBES)
14606576ceSSteven Rostedt	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1580be7a7fSRabin Vincent	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
1680be7a7fSRabin Vincent	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
170e341af8SRabin Vincent	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
181fe53268SDmitry Baryshkov	select HAVE_GENERIC_DMA_COHERENT
19e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_GZIP
20e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_LZO
216e8699f7SAlbin Tonnerre	select HAVE_KERNEL_LZMA
22e360adbeSPeter Zijlstra	select HAVE_IRQ_WORK
237ada189fSJamie Iles	select HAVE_PERF_EVENTS
247ada189fSJamie Iles	select PERF_USE_VMALLOC
25e513f8bfSWill Deacon	select HAVE_REGS_AND_STACK_ACCESS_API
2619852e59SWill Deacon	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
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
41112f38a4SRussell Kingconfig HAVE_SCHED_CLOCK
42112f38a4SRussell King	bool
43112f38a4SRussell King
440a938b97SDavid Brownellconfig GENERIC_GPIO
450a938b97SDavid Brownell	bool
460a938b97SDavid Brownell
475cfc8ee0SJohn Stultzconfig ARCH_USES_GETTIMEOFFSET
485cfc8ee0SJohn Stultz	bool
495cfc8ee0SJohn Stultz	default n
50746140c7SKevin Hilman
510567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS
520567a0c0SKevin Hilman	bool
530567a0c0SKevin Hilman
54a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST
55a8655e83SCatalin Marinas	bool
56a8655e83SCatalin Marinas	depends on GENERIC_CLOCKEVENTS
575388a6b2SRussell King	default y if SMP
58a8655e83SCatalin Marinas
59bc581770SLinus Walleijconfig HAVE_TCM
60bc581770SLinus Walleij	bool
61bc581770SLinus Walleij	select GENERIC_ALLOCATOR
62bc581770SLinus Walleij
63e119bfffSRussell Kingconfig HAVE_PROC_CPU
64e119bfffSRussell King	bool
65e119bfffSRussell King
665ea81769SAl Viroconfig NO_IOPORT
675ea81769SAl Viro	bool
685ea81769SAl Viro
691da177e4SLinus Torvaldsconfig EISA
701da177e4SLinus Torvalds	bool
711da177e4SLinus Torvalds	---help---
721da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
731da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
741da177e4SLinus Torvalds
751da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
761da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
771da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
781da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
791da177e4SLinus Torvalds
801da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
811da177e4SLinus Torvalds
821da177e4SLinus Torvalds	  Otherwise, say N.
831da177e4SLinus Torvalds
841da177e4SLinus Torvaldsconfig SBUS
851da177e4SLinus Torvalds	bool
861da177e4SLinus Torvalds
871da177e4SLinus Torvaldsconfig MCA
881da177e4SLinus Torvalds	bool
891da177e4SLinus Torvalds	help
901da177e4SLinus Torvalds	  MicroChannel Architecture is found in some IBM PS/2 machines and
911da177e4SLinus Torvalds	  laptops.  It is a bus system similar to PCI or ISA. See
921da177e4SLinus Torvalds	  <file:Documentation/mca.txt> (and especially the web page given
931da177e4SLinus Torvalds	  there) before attempting to build an MCA bus kernel.
941da177e4SLinus Torvalds
954a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS
964a2581a0SThomas Gleixner	bool
974a2581a0SThomas Gleixner	default y
984a2581a0SThomas Gleixner
99f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT
100f16fb1ecSRussell King	bool
101f16fb1ecSRussell King	default y
102f16fb1ecSRussell King
103f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT
104f76e9154SNicolas Pitre	bool
105f76e9154SNicolas Pitre	depends on !SMP
106f76e9154SNicolas Pitre	default y
107f76e9154SNicolas Pitre
108f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT
109f16fb1ecSRussell King	bool
110f16fb1ecSRussell King	default y
111f16fb1ecSRussell King
1127ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT
1137ad1bcb2SRussell King	bool
1147ad1bcb2SRussell King	default y
1157ad1bcb2SRussell King
1164a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND
1174a2581a0SThomas Gleixner	bool
1184a2581a0SThomas Gleixner	default y
1194a2581a0SThomas Gleixner
1204a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE
1214a2581a0SThomas Gleixner	bool
1224a2581a0SThomas Gleixner	default y
1234a2581a0SThomas Gleixner
12495c354feSNick Pigginconfig GENERIC_LOCKBREAK
12595c354feSNick Piggin	bool
12695c354feSNick Piggin	default y
12795c354feSNick Piggin	depends on SMP && PREEMPT
12895c354feSNick Piggin
1291da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK
1301da177e4SLinus Torvalds	bool
1311da177e4SLinus Torvalds	default y
1321da177e4SLinus Torvalds
1331da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
1341da177e4SLinus Torvalds	bool
1351da177e4SLinus Torvalds
136f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32
137f0d1b0b3SDavid Howells	bool
138f0d1b0b3SDavid Howells
139f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64
140f0d1b0b3SDavid Howells	bool
141f0d1b0b3SDavid Howells
14289c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ
14389c52ed4SBen Dooks	bool
14489c52ed4SBen Dooks	help
14589c52ed4SBen Dooks	  Internal node to signify that the ARCH has CPUFREQ support
14689c52ed4SBen Dooks	  and that the relevant menu configurations are displayed for
14789c52ed4SBen Dooks	  it.
14889c52ed4SBen Dooks
149c7b0aff4SKevin Hilmanconfig ARCH_HAS_CPU_IDLE_WAIT
150c7b0aff4SKevin Hilman       def_bool y
151c7b0aff4SKevin Hilman
152b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
153b89c3b16SAkinobu Mita	bool
154b89c3b16SAkinobu Mita	default y
155b89c3b16SAkinobu Mita
1561da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
1571da177e4SLinus Torvalds	bool
1581da177e4SLinus Torvalds	default y
1591da177e4SLinus Torvalds
160a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
161a08b6b79Sviro@ZenIV.linux.org.uk	bool
162a08b6b79Sviro@ZenIV.linux.org.uk
1635ac6da66SChristoph Lameterconfig ZONE_DMA
1645ac6da66SChristoph Lameter	bool
1655ac6da66SChristoph Lameter
166ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE
167ccd7ab7fSFUJITA Tomonori       def_bool y
168ccd7ab7fSFUJITA Tomonori
1691da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
1701da177e4SLinus Torvalds	bool
1711da177e4SLinus Torvalds
1721da177e4SLinus Torvaldsconfig FIQ
1731da177e4SLinus Torvalds	bool
1741da177e4SLinus Torvalds
175034d2f5aSAl Viroconfig ARCH_MTD_XIP
176034d2f5aSAl Viro	bool
177034d2f5aSAl Viro
17860a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ
17960a752efSPaulius Zaleckas	def_bool y
18060a752efSPaulius Zaleckas
181d6d502faSKukjin Kimconfig ARM_L1_CACHE_SHIFT_6
182d6d502faSKukjin Kim	bool
183d6d502faSKukjin Kim	help
184d6d502faSKukjin Kim	  Setting ARM L1 cache line size to 64 Bytes.
185d6d502faSKukjin Kim
186c760fc19SHyok S. Choiconfig VECTORS_BASE
187c760fc19SHyok S. Choi	hex
1886afd6faeSHyok S. Choi	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
189c760fc19SHyok S. Choi	default DRAM_BASE if REMAP_VECTORS_TO_RAM
190c760fc19SHyok S. Choi	default 0x00000000
191c760fc19SHyok S. Choi	help
192c760fc19SHyok S. Choi	  The base address of exception vectors.
193c760fc19SHyok S. Choi
1941da177e4SLinus Torvaldssource "init/Kconfig"
1951da177e4SLinus Torvalds
196dc52ddc0SMatt Helsleysource "kernel/Kconfig.freezer"
197dc52ddc0SMatt Helsley
1981da177e4SLinus Torvaldsmenu "System Type"
1991da177e4SLinus Torvalds
2003c427975SHyok S. Choiconfig MMU
2013c427975SHyok S. Choi	bool "MMU-based Paged Memory Management Support"
2023c427975SHyok S. Choi	default y
2033c427975SHyok S. Choi	help
2043c427975SHyok S. Choi	  Select if you want MMU-based virtualised addressing space
2053c427975SHyok S. Choi	  support by paged memory management. If unsure, say 'Y'.
2063c427975SHyok S. Choi
207ccf50e23SRussell King#
208ccf50e23SRussell King# The "ARM system type" choice list is ordered alphabetically by option
209ccf50e23SRussell King# text.  Please add new entries in the option alphabetic order.
210ccf50e23SRussell King#
2111da177e4SLinus Torvaldschoice
2121da177e4SLinus Torvalds	prompt "ARM system type"
2136a0e2430SCatalin Marinas	default ARCH_VERSATILE
2141da177e4SLinus Torvalds
2154af6fee1SDeepak Saxenaconfig ARCH_AAEC2000
2164af6fee1SDeepak Saxena	bool "Agilent AAEC-2000 based"
217c750815eSRussell King	select CPU_ARM920T
2184af6fee1SDeepak Saxena	select ARM_AMBA
2199483a578SDavid Brownell	select HAVE_CLK
2205cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
2214af6fee1SDeepak Saxena	help
2224af6fee1SDeepak Saxena	  This enables support for systems based on the Agilent AAEC-2000
2234af6fee1SDeepak Saxena
2244af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR
2254af6fee1SDeepak Saxena	bool "ARM Ltd. Integrator family"
2264af6fee1SDeepak Saxena	select ARM_AMBA
22789c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
228d72fbdf0SRussell King	select COMMON_CLKDEV
229c5a0adb5SRussell King	select ICST
23013edd86dSRussell King	select GENERIC_CLOCKEVENTS
231f4b8b319SRussell King	select PLAT_VERSATILE
2324af6fee1SDeepak Saxena	help
2334af6fee1SDeepak Saxena	  Support for ARM's Integrator platform.
2344af6fee1SDeepak Saxena
2354af6fee1SDeepak Saxenaconfig ARCH_REALVIEW
2364af6fee1SDeepak Saxena	bool "ARM Ltd. RealView family"
2374af6fee1SDeepak Saxena	select ARM_AMBA
238cf30fb4aSRussell King	select COMMON_CLKDEV
239c5a0adb5SRussell King	select ICST
240ae30ceacSCatalin Marinas	select GENERIC_CLOCKEVENTS
241eb7fffa3SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
242f4b8b319SRussell King	select PLAT_VERSATILE
243e3887714SRussell King	select ARM_TIMER_SP804
244b56ba8aaSColin Tuckley	select GPIO_PL061 if GPIOLIB
2454af6fee1SDeepak Saxena	help
2464af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
2474af6fee1SDeepak Saxena
2484af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
2494af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
2504af6fee1SDeepak Saxena	select ARM_AMBA
2514af6fee1SDeepak Saxena	select ARM_VIC
25271a06da0SRussell King	select COMMON_CLKDEV
253c5a0adb5SRussell King	select ICST
25489df1272SKevin Hilman	select GENERIC_CLOCKEVENTS
255bbeddc43SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
256f4b8b319SRussell King	select PLAT_VERSATILE
257e3887714SRussell King	select ARM_TIMER_SP804
2584af6fee1SDeepak Saxena	help
2594af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
2604af6fee1SDeepak Saxena
261ceade897SRussell Kingconfig ARCH_VEXPRESS
262ceade897SRussell King	bool "ARM Ltd. Versatile Express family"
263ceade897SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
264ceade897SRussell King	select ARM_AMBA
265ceade897SRussell King	select ARM_TIMER_SP804
266ceade897SRussell King	select COMMON_CLKDEV
267ceade897SRussell King	select GENERIC_CLOCKEVENTS
268ceade897SRussell King	select HAVE_CLK
269ceade897SRussell King	select ICST
270ceade897SRussell King	select PLAT_VERSATILE
271ceade897SRussell King	help
272ceade897SRussell King	  This enables support for the ARM Ltd Versatile Express boards.
273ceade897SRussell King
2748fc5ffa0SAndrew Victorconfig ARCH_AT91
2758fc5ffa0SAndrew Victor	bool "Atmel AT91"
276f373e8c0SRyan Mallon	select ARCH_REQUIRE_GPIOLIB
27793686ae8SDavid Brownell	select HAVE_CLK
2784af6fee1SDeepak Saxena	help
2792b3b3516SAndrew Victor	  This enables support for systems based on the Atmel AT91RM9200,
2802b3b3516SAndrew Victor	  AT91SAM9 and AT91CAP9 processors.
2814af6fee1SDeepak Saxena
282ccf50e23SRussell Kingconfig ARCH_BCMRING
283ccf50e23SRussell King	bool "Broadcom BCMRING"
284ccf50e23SRussell King	depends on MMU
285ccf50e23SRussell King	select CPU_V6
286ccf50e23SRussell King	select ARM_AMBA
287ccf50e23SRussell King	select COMMON_CLKDEV
288ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
289ccf50e23SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
290ccf50e23SRussell King	help
291ccf50e23SRussell King	  Support for Broadcom's BCMRing platform.
292ccf50e23SRussell King
2931da177e4SLinus Torvaldsconfig ARCH_CLPS711X
2944af6fee1SDeepak Saxena	bool "Cirrus Logic CLPS711x/EP721x-based"
295c750815eSRussell King	select CPU_ARM720T
2965cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
297f999b8bdSMartin Michlmayr	help
298f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
2991da177e4SLinus Torvalds
300d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX
301d94f944eSAnton Vorontsov	bool "Cavium Networks CNS3XXX family"
302d94f944eSAnton Vorontsov	select CPU_V6
303d94f944eSAnton Vorontsov	select GENERIC_CLOCKEVENTS
304d94f944eSAnton Vorontsov	select ARM_GIC
3055f32f7a0SAnton Vorontsov	select PCI_DOMAINS if PCI
306d94f944eSAnton Vorontsov	help
307d94f944eSAnton Vorontsov	  Support for Cavium Networks CNS3XXX platform.
308d94f944eSAnton Vorontsov
309788c9700SRussell Kingconfig ARCH_GEMINI
310788c9700SRussell King	bool "Cortina Systems Gemini"
311788c9700SRussell King	select CPU_FA526
312788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
3135cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
314788c9700SRussell King	help
315788c9700SRussell King	  Support for the Cortina Systems Gemini family SoCs
316788c9700SRussell King
3171da177e4SLinus Torvaldsconfig ARCH_EBSA110
3181da177e4SLinus Torvalds	bool "EBSA-110"
319c750815eSRussell King	select CPU_SA110
320f7e68bbfSRussell King	select ISA
321c5eb2a2bSRussell King	select NO_IOPORT
3225cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
3231da177e4SLinus Torvalds	help
3241da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
325f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
3261da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
3271da177e4SLinus Torvalds	  parallel port.
3281da177e4SLinus Torvalds
329e7736d47SLennert Buytenhekconfig ARCH_EP93XX
330e7736d47SLennert Buytenhek	bool "EP93xx-based"
331c750815eSRussell King	select CPU_ARM920T
332e7736d47SLennert Buytenhek	select ARM_AMBA
333e7736d47SLennert Buytenhek	select ARM_VIC
334ae696fd5SRussell King	select COMMON_CLKDEV
3357444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
336eb33575cSMel Gorman	select ARCH_HAS_HOLES_MEMORYMODEL
3375cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
338e7736d47SLennert Buytenhek	help
339e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
340e7736d47SLennert Buytenhek
3411da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
3421da177e4SLinus Torvalds	bool "FootBridge"
343c750815eSRussell King	select CPU_SA110
3441da177e4SLinus Torvalds	select FOOTBRIDGE
3455cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
346f999b8bdSMartin Michlmayr	help
347f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
348f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
3491da177e4SLinus Torvalds
350788c9700SRussell Kingconfig ARCH_MXC
351788c9700SRussell King	bool "Freescale MXC/iMX-based"
352788c9700SRussell King	select GENERIC_CLOCKEVENTS
353788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
35403e09cd8SUwe Kleine-König	select COMMON_CLKDEV
355788c9700SRussell King	help
356788c9700SRussell King	  Support for Freescale MXC/iMX-based family of processors
357788c9700SRussell King
3587bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX
3597bd0f2f5Sdmitry pervushin	bool "Freescale STMP3xxx"
3607bd0f2f5Sdmitry pervushin	select CPU_ARM926T
3617bd0f2f5Sdmitry pervushin	select COMMON_CLKDEV
3627bd0f2f5Sdmitry pervushin	select ARCH_REQUIRE_GPIOLIB
3637bd0f2f5Sdmitry pervushin	select GENERIC_CLOCKEVENTS
3647bd0f2f5Sdmitry pervushin	select USB_ARCH_HAS_EHCI
3657bd0f2f5Sdmitry pervushin	help
3667bd0f2f5Sdmitry pervushin	  Support for systems based on the Freescale 3xxx CPUs.
3677bd0f2f5Sdmitry pervushin
3684af6fee1SDeepak Saxenaconfig ARCH_NETX
3694af6fee1SDeepak Saxena	bool "Hilscher NetX based"
370c750815eSRussell King	select CPU_ARM926T
3714af6fee1SDeepak Saxena	select ARM_VIC
3722fcfe6b8SUwe Kleine-König	select GENERIC_CLOCKEVENTS
373f999b8bdSMartin Michlmayr	help
3744af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
3754af6fee1SDeepak Saxena
3764af6fee1SDeepak Saxenaconfig ARCH_H720X
3774af6fee1SDeepak Saxena	bool "Hynix HMS720x-based"
378c750815eSRussell King	select CPU_ARM720T
3794af6fee1SDeepak Saxena	select ISA_DMA_API
3805cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
3814af6fee1SDeepak Saxena	help
3824af6fee1SDeepak Saxena	  This enables support for systems based on the Hynix HMS720x
3834af6fee1SDeepak Saxena
3843b938be6SRussell Kingconfig ARCH_IOP13XX
3853b938be6SRussell King	bool "IOP13xx-based"
3863b938be6SRussell King	depends on MMU
387c750815eSRussell King	select CPU_XSC3
3883b938be6SRussell King	select PLAT_IOP
3893b938be6SRussell King	select PCI
3903b938be6SRussell King	select ARCH_SUPPORTS_MSI
3918d5796d2SLennert Buytenhek	select VMSPLIT_1G
3923b938be6SRussell King	help
3933b938be6SRussell King	  Support for Intel's IOP13XX (XScale) family of processors.
3943b938be6SRussell King
3953f7e5815SLennert Buytenhekconfig ARCH_IOP32X
3963f7e5815SLennert Buytenhek	bool "IOP32x-based"
397a4f7e763SRussell King	depends on MMU
398c750815eSRussell King	select CPU_XSCALE
3997ae1f7ecSLennert Buytenhek	select PLAT_IOP
400f7e68bbfSRussell King	select PCI
401bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
402f999b8bdSMartin Michlmayr	help
4033f7e5815SLennert Buytenhek	  Support for Intel's 80219 and IOP32X (XScale) family of
4043f7e5815SLennert Buytenhek	  processors.
4053f7e5815SLennert Buytenhek
4063f7e5815SLennert Buytenhekconfig ARCH_IOP33X
4073f7e5815SLennert Buytenhek	bool "IOP33x-based"
4083f7e5815SLennert Buytenhek	depends on MMU
409c750815eSRussell King	select CPU_XSCALE
4107ae1f7ecSLennert Buytenhek	select PLAT_IOP
4113f7e5815SLennert Buytenhek	select PCI
412bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
4133f7e5815SLennert Buytenhek	help
4143f7e5815SLennert Buytenhek	  Support for Intel's IOP33X (XScale) family of processors.
4151da177e4SLinus Torvalds
4163b938be6SRussell Kingconfig ARCH_IXP23XX
4173b938be6SRussell King 	bool "IXP23XX-based"
418588ef769SDan Williams	depends on MMU
419c750815eSRussell King	select CPU_XSC3
420285f5fa7SDan Williams 	select PCI
4215cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
422285f5fa7SDan Williams	help
4233b938be6SRussell King	  Support for Intel's IXP23xx (XScale) family of processors.
4241da177e4SLinus Torvalds
4251da177e4SLinus Torvaldsconfig ARCH_IXP2000
4261da177e4SLinus Torvalds	bool "IXP2400/2800-based"
427a4f7e763SRussell King	depends on MMU
428c750815eSRussell King	select CPU_XSCALE
429f7e68bbfSRussell King	select PCI
4305cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
431f999b8bdSMartin Michlmayr	help
432f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
4331da177e4SLinus Torvalds
4343b938be6SRussell Kingconfig ARCH_IXP4XX
4353b938be6SRussell King	bool "IXP4xx-based"
436a4f7e763SRussell King	depends on MMU
437c750815eSRussell King	select CPU_XSCALE
4388858e9afSMilan Svoboda	select GENERIC_GPIO
4393b938be6SRussell King	select GENERIC_CLOCKEVENTS
4405b0d495cSRussell King	select HAVE_SCHED_CLOCK
441485bdde7SRussell King	select DMABOUNCE if PCI
442c4713074SLennert Buytenhek	help
4433b938be6SRussell King	  Support for Intel's IXP4XX (XScale) family of processors.
444c4713074SLennert Buytenhek
445edabd38eSSaeed Bisharaconfig ARCH_DOVE
446edabd38eSSaeed Bishara	bool "Marvell Dove"
447edabd38eSSaeed Bishara	select PCI
448edabd38eSSaeed Bishara	select ARCH_REQUIRE_GPIOLIB
449edabd38eSSaeed Bishara	select GENERIC_CLOCKEVENTS
450edabd38eSSaeed Bishara	select PLAT_ORION
451edabd38eSSaeed Bishara	help
452edabd38eSSaeed Bishara	  Support for the Marvell Dove SoC 88AP510
453edabd38eSSaeed Bishara
454651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD
455651c74c7SSaeed Bishara	bool "Marvell Kirkwood"
456c750815eSRussell King	select CPU_FEROCEON
457651c74c7SSaeed Bishara	select PCI
458a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
459651c74c7SSaeed Bishara	select GENERIC_CLOCKEVENTS
460651c74c7SSaeed Bishara	select PLAT_ORION
461651c74c7SSaeed Bishara	help
462651c74c7SSaeed Bishara	  Support for the following Marvell Kirkwood series SoCs:
463651c74c7SSaeed Bishara	  88F6180, 88F6192 and 88F6281.
464651c74c7SSaeed Bishara
465788c9700SRussell Kingconfig ARCH_LOKI
466788c9700SRussell King	bool "Marvell Loki (88RC8480)"
467788c9700SRussell King	select CPU_FEROCEON
468788c9700SRussell King	select GENERIC_CLOCKEVENTS
469788c9700SRussell King	select PLAT_ORION
470788c9700SRussell King	help
471788c9700SRussell King	  Support for the Marvell Loki (88RC8480) SoC.
472788c9700SRussell King
47340805949SKevin Wellsconfig ARCH_LPC32XX
47440805949SKevin Wells	bool "NXP LPC32XX"
47540805949SKevin Wells	select CPU_ARM926T
47640805949SKevin Wells	select ARCH_REQUIRE_GPIOLIB
47740805949SKevin Wells	select HAVE_IDE
47840805949SKevin Wells	select ARM_AMBA
47940805949SKevin Wells	select USB_ARCH_HAS_OHCI
48040805949SKevin Wells	select COMMON_CLKDEV
48140805949SKevin Wells	select GENERIC_TIME
48240805949SKevin Wells	select GENERIC_CLOCKEVENTS
48340805949SKevin Wells	help
48440805949SKevin Wells	  Support for the NXP LPC32XX family of processors
48540805949SKevin Wells
486788c9700SRussell Kingconfig ARCH_MV78XX0
487788c9700SRussell King	bool "Marvell MV78xx0"
488788c9700SRussell King	select CPU_FEROCEON
489788c9700SRussell King	select PCI
490a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
491788c9700SRussell King	select GENERIC_CLOCKEVENTS
492788c9700SRussell King	select PLAT_ORION
493788c9700SRussell King	help
494788c9700SRussell King	  Support for the following Marvell MV78xx0 series SoCs:
495788c9700SRussell King	  MV781x0, MV782x0.
496788c9700SRussell King
497788c9700SRussell Kingconfig ARCH_ORION5X
498788c9700SRussell King	bool "Marvell Orion"
499788c9700SRussell King	depends on MMU
500788c9700SRussell King	select CPU_FEROCEON
501788c9700SRussell King	select PCI
502a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
503788c9700SRussell King	select GENERIC_CLOCKEVENTS
504788c9700SRussell King	select PLAT_ORION
505788c9700SRussell King	help
506788c9700SRussell King	  Support for the following Marvell Orion 5x series SoCs:
507788c9700SRussell King	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
508788c9700SRussell King	  Orion-2 (5281), Orion-1-90 (6183).
509788c9700SRussell King
510788c9700SRussell Kingconfig ARCH_MMP
5112f7e8faeSHaojian Zhuang	bool "Marvell PXA168/910/MMP2"
512788c9700SRussell King	depends on MMU
513788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
514788c9700SRussell King	select COMMON_CLKDEV
515788c9700SRussell King	select GENERIC_CLOCKEVENTS
516*28bb7bc6SRussell King	select HAVE_SCHED_CLOCK
517788c9700SRussell King	select TICK_ONESHOT
518788c9700SRussell King	select PLAT_PXA
5190bd86961SHaojian Zhuang	select SPARSE_IRQ
520788c9700SRussell King	help
5212f7e8faeSHaojian Zhuang	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
522788c9700SRussell King
523c53c9cf6SAndrew Victorconfig ARCH_KS8695
524c53c9cf6SAndrew Victor	bool "Micrel/Kendin KS8695"
525c750815eSRussell King	select CPU_ARM922T
52672880ad8SDaniel Silverstone	select ARCH_REQUIRE_GPIOLIB
5275cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
528c53c9cf6SAndrew Victor	help
529c53c9cf6SAndrew Victor	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
530c53c9cf6SAndrew Victor	  System-on-Chip devices.
531c53c9cf6SAndrew Victor
5329918cda5SUwe Kleine-Königconfig ARCH_NS9XXX
5339918cda5SUwe Kleine-König	bool "NetSilicon NS9xxx"
534c750815eSRussell King	select CPU_ARM926T
535689f2a01SUwe Kleine-König	select GENERIC_GPIO
536c0bb87f7SUwe Kleine-König	select GENERIC_CLOCKEVENTS
5379483a578SDavid Brownell	select HAVE_CLK
5389918cda5SUwe Kleine-König	help
5399918cda5SUwe Kleine-König	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
5409918cda5SUwe Kleine-König	  System.
5419918cda5SUwe Kleine-König
5429918cda5SUwe Kleine-König	  <http://www.digi.com/products/microprocessors/index.jsp>
5439918cda5SUwe Kleine-König
544788c9700SRussell Kingconfig ARCH_W90X900
545788c9700SRussell King	bool "Nuvoton W90X900 CPU"
546788c9700SRussell King	select CPU_ARM926T
547c52d3d68Swanzongshun	select ARCH_REQUIRE_GPIOLIB
5480e4a34bbSwanzongshun	select COMMON_CLKDEV
54958b5369eSwanzongshun	select GENERIC_CLOCKEVENTS
550777f9bebSLennert Buytenhek	help
551a8bc4eadSwanzongshun	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
552a8bc4eadSwanzongshun	  At present, the w90x900 has been renamed nuc900, regarding
553a8bc4eadSwanzongshun	  the ARM series product line, you can login the following
554a8bc4eadSwanzongshun	  link address to know more.
555a8bc4eadSwanzongshun
556a8bc4eadSwanzongshun	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
557a8bc4eadSwanzongshun		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
558585cf175STzachi Perelstein
559a62e9030Swanzongshunconfig ARCH_NUC93X
560a62e9030Swanzongshun	bool "Nuvoton NUC93X CPU"
561a62e9030Swanzongshun	select CPU_ARM926T
562a62e9030Swanzongshun	select COMMON_CLKDEV
563a62e9030Swanzongshun	help
564a62e9030Swanzongshun	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
565a62e9030Swanzongshun	  low-power and high performance MPEG-4/JPEG multimedia controller chip.
566a62e9030Swanzongshun
567c5f80065SErik Gillingconfig ARCH_TEGRA
568c5f80065SErik Gilling	bool "NVIDIA Tegra"
569c5f80065SErik Gilling	select GENERIC_TIME
570c5f80065SErik Gilling	select GENERIC_CLOCKEVENTS
571c5f80065SErik Gilling	select GENERIC_GPIO
572c5f80065SErik Gilling	select HAVE_CLK
573d8611961SColin Cross	select COMMON_CLKDEV
574c5f80065SErik Gilling	select ARCH_HAS_BARRIERS if CACHE_L2X0
5757056d423SColin Cross	select ARCH_HAS_CPUFREQ
576c5f80065SErik Gilling	help
577c5f80065SErik Gilling	  This enables support for NVIDIA Tegra based systems (Tegra APX,
578c5f80065SErik Gilling	  Tegra 6xx and Tegra 2 series).
579c5f80065SErik Gilling
5804af6fee1SDeepak Saxenaconfig ARCH_PNX4008
5814af6fee1SDeepak Saxena	bool "Philips Nexperia PNX4008 Mobile"
582c750815eSRussell King	select CPU_ARM926T
5836985a5adSRussell King	select COMMON_CLKDEV
5845cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
5854af6fee1SDeepak Saxena	help
5864af6fee1SDeepak Saxena	  This enables support for Philips PNX4008 mobile platform.
5874af6fee1SDeepak Saxena
5881da177e4SLinus Torvaldsconfig ARCH_PXA
5892c8086a5Seric miao	bool "PXA2xx/PXA3xx-based"
590a4f7e763SRussell King	depends on MMU
591034d2f5aSAl Viro	select ARCH_MTD_XIP
59289c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
5938c3abc7dSRussell King	select COMMON_CLKDEV
5947444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
595981d0f39SEric Miao	select GENERIC_CLOCKEVENTS
596a88264c2SRussell King	select TICK_ONESHOT
597bd5ce433SEric Miao	select PLAT_PXA
5986ac6b817SHaojian Zhuang	select SPARSE_IRQ
599f999b8bdSMartin Michlmayr	help
6002c8086a5Seric miao	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
6011da177e4SLinus Torvalds
602788c9700SRussell Kingconfig ARCH_MSM
603788c9700SRussell King	bool "Qualcomm MSM"
6044b536b8dSSteve Muckle	select HAVE_CLK
60549cbe786SEric Miao	select GENERIC_CLOCKEVENTS
606923a081cSPavel Machek	select ARCH_REQUIRE_GPIOLIB
60749cbe786SEric Miao	help
6084b53eb4fSDaniel Walker	  Support for Qualcomm MSM/QSD based systems.  This runs on the
6094b53eb4fSDaniel Walker	  apps processor of the MSM/QSD and depends on a shared memory
6104b53eb4fSDaniel Walker	  interface to the modem processor which runs the baseband
6114b53eb4fSDaniel Walker	  stack and controls some vital subsystems
6124b53eb4fSDaniel Walker	  (clock and power control, etc).
61349cbe786SEric Miao
614c793c1b0SMagnus Dammconfig ARCH_SHMOBILE
615c793c1b0SMagnus Damm	bool "Renesas SH-Mobile"
616c793c1b0SMagnus Damm	help
617c793c1b0SMagnus Damm	  Support for Renesas's SH-Mobile ARM platforms
618c793c1b0SMagnus Damm
6191da177e4SLinus Torvaldsconfig ARCH_RPC
6201da177e4SLinus Torvalds	bool "RiscPC"
6211da177e4SLinus Torvalds	select ARCH_ACORN
6221da177e4SLinus Torvalds	select FIQ
6231da177e4SLinus Torvalds	select TIMER_ACORN
624a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
625341eb781SBen Dooks	select HAVE_PATA_PLATFORM
626065909b9SRussell King	select ISA_DMA_API
6275ea81769SAl Viro	select NO_IOPORT
62807f841b7SRussell King	select ARCH_SPARSEMEM_ENABLE
6295cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
6301da177e4SLinus Torvalds	help
6311da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
6321da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
6331da177e4SLinus Torvalds
6341da177e4SLinus Torvaldsconfig ARCH_SA1100
6351da177e4SLinus Torvalds	bool "SA1100-based"
636c750815eSRussell King	select CPU_SA1100
637f7e68bbfSRussell King	select ISA
63805944d74SRussell King	select ARCH_SPARSEMEM_ENABLE
639034d2f5aSAl Viro	select ARCH_MTD_XIP
64089c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
6411937f5b9SRussell King	select CPU_FREQ
6423e238be2SRussell King	select GENERIC_CLOCKEVENTS
6439483a578SDavid Brownell	select HAVE_CLK
6443e238be2SRussell King	select TICK_ONESHOT
6457444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
646f999b8bdSMartin Michlmayr	help
647f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
6481da177e4SLinus Torvalds
6491da177e4SLinus Torvaldsconfig ARCH_S3C2410
65063b1f51bSBen Dooks	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
6510a938b97SDavid Brownell	select GENERIC_GPIO
6529d56c02aSBen Dooks	select ARCH_HAS_CPUFREQ
6539483a578SDavid Brownell	select HAVE_CLK
6545cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
65520676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
6561da177e4SLinus Torvalds	help
6571da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
6581da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
659f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
6601da177e4SLinus Torvalds
66163b1f51bSBen Dooks	  Note, the S3C2416 and the S3C2450 are so close that they even share
66263b1f51bSBen Dooks	  the same SoC ID code. This means that there is no seperate machine
66363b1f51bSBen Dooks	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
66463b1f51bSBen Dooks
665a08ab637SBen Dooksconfig ARCH_S3C64XX
666a08ab637SBen Dooks	bool "Samsung S3C64XX"
66789f1fa08SBen Dooks	select PLAT_SAMSUNG
66889f0ce72SBen Dooks	select CPU_V6
66989f0ce72SBen Dooks	select ARM_VIC
670a08ab637SBen Dooks	select HAVE_CLK
67189f0ce72SBen Dooks	select NO_IOPORT
6725cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
67389c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
67489f0ce72SBen Dooks	select ARCH_REQUIRE_GPIOLIB
67589f0ce72SBen Dooks	select SAMSUNG_CLKSRC
67689f0ce72SBen Dooks	select SAMSUNG_IRQ_VIC_TIMER
67789f0ce72SBen Dooks	select SAMSUNG_IRQ_UART
67889f0ce72SBen Dooks	select S3C_GPIO_TRACK
67989f0ce72SBen Dooks	select S3C_GPIO_PULL_UPDOWN
68089f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C24XX
68189f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C64XX
68289f0ce72SBen Dooks	select S3C_DEV_NAND
68389f0ce72SBen Dooks	select USB_ARCH_HAS_OHCI
68489f0ce72SBen Dooks	select SAMSUNG_GPIOLIB_4BIT
68520676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
686c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
687a08ab637SBen Dooks	help
688a08ab637SBen Dooks	  Samsung S3C64XX series based systems
689a08ab637SBen Dooks
69049b7a491SKukjin Kimconfig ARCH_S5P64X0
69149b7a491SKukjin Kim	bool "Samsung S5P6440 S5P6450"
692c4ffccddSKukjin Kim	select CPU_V6
693c4ffccddSKukjin Kim	select GENERIC_GPIO
694c4ffccddSKukjin Kim	select HAVE_CLK
695c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
696925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
69720676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
698754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
699c4ffccddSKukjin Kim	help
70049b7a491SKukjin Kim	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
70149b7a491SKukjin Kim	  SMDK6450.
702c4ffccddSKukjin Kim
703550db7f1SKukjin Kimconfig ARCH_S5P6442
704550db7f1SKukjin Kim	bool "Samsung S5P6442"
705550db7f1SKukjin Kim	select CPU_V6
706550db7f1SKukjin Kim	select GENERIC_GPIO
707550db7f1SKukjin Kim	select HAVE_CLK
708925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
709c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
710550db7f1SKukjin Kim	help
711550db7f1SKukjin Kim	  Samsung S5P6442 CPU based systems
712550db7f1SKukjin Kim
713acc84707SMarek Szyprowskiconfig ARCH_S5PC100
714acc84707SMarek Szyprowski	bool "Samsung S5PC100"
7155a7652f2SByungho Min	select GENERIC_GPIO
7165a7652f2SByungho Min	select HAVE_CLK
7175a7652f2SByungho Min	select CPU_V7
718d6d502faSKukjin Kim	select ARM_L1_CACHE_SHIFT_6
719925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
72020676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
721754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
722c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
7235a7652f2SByungho Min	help
724acc84707SMarek Szyprowski	  Samsung S5PC100 series based systems
7255a7652f2SByungho Min
726170f4e42SKukjin Kimconfig ARCH_S5PV210
727170f4e42SKukjin Kim	bool "Samsung S5PV210/S5PC110"
728170f4e42SKukjin Kim	select CPU_V7
729eecb6a84SKyungmin Park	select ARCH_SPARSEMEM_ENABLE
730170f4e42SKukjin Kim	select GENERIC_GPIO
731170f4e42SKukjin Kim	select HAVE_CLK
732170f4e42SKukjin Kim	select ARM_L1_CACHE_SHIFT_6
733d8144aeaSJaecheol Lee	select ARCH_HAS_CPUFREQ
734925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
73520676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
736754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
737c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
738170f4e42SKukjin Kim	help
739170f4e42SKukjin Kim	  Samsung S5PV210/S5PC110 series based systems
740170f4e42SKukjin Kim
741cc0e72b8SChanghwan Younconfig ARCH_S5PV310
742cc0e72b8SChanghwan Youn	bool "Samsung S5PV310/S5PC210"
743cc0e72b8SChanghwan Youn	select CPU_V7
744f567fa6fSKyungmin Park	select ARCH_SPARSEMEM_ENABLE
745cc0e72b8SChanghwan Youn	select GENERIC_GPIO
746cc0e72b8SChanghwan Youn	select HAVE_CLK
747cc0e72b8SChanghwan Youn	select GENERIC_CLOCKEVENTS
748754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
74920676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
750c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
751cc0e72b8SChanghwan Youn	help
752cc0e72b8SChanghwan Youn	  Samsung S5PV310 series based systems
753cc0e72b8SChanghwan Youn
7541da177e4SLinus Torvaldsconfig ARCH_SHARK
7551da177e4SLinus Torvalds	bool "Shark"
756c750815eSRussell King	select CPU_SA110
757f7e68bbfSRussell King	select ISA
758f7e68bbfSRussell King	select ISA_DMA
7593bca103aSNicolas Pitre	select ZONE_DMA
760f7e68bbfSRussell King	select PCI
7615cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
762f999b8bdSMartin Michlmayr	help
763f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
764f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
7651da177e4SLinus Torvalds
76683ef3338SHans J. Kochconfig ARCH_TCC_926
76783ef3338SHans J. Koch	bool "Telechips TCC ARM926-based systems"
76883ef3338SHans J. Koch	select CPU_ARM926T
76983ef3338SHans J. Koch	select HAVE_CLK
77083ef3338SHans J. Koch	select COMMON_CLKDEV
77183ef3338SHans J. Koch	select GENERIC_CLOCKEVENTS
77283ef3338SHans J. Koch	help
77383ef3338SHans J. Koch	  Support for Telechips TCC ARM926-based systems.
77483ef3338SHans J. Koch
7751da177e4SLinus Torvaldsconfig ARCH_LH7A40X
7761da177e4SLinus Torvalds	bool "Sharp LH7A40X"
777c750815eSRussell King	select CPU_ARM922T
7784ba3f7c5SRussell King	select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
7795cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
7801da177e4SLinus Torvalds	help
7811da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
7821da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
7831da177e4SLinus Torvalds	  core with a wide array of integrated devices for
7841da177e4SLinus Torvalds	  hand-held and low-power applications.
7851da177e4SLinus Torvalds
786d98aac75SLinus Walleijconfig ARCH_U300
787d98aac75SLinus Walleij	bool "ST-Ericsson U300 Series"
788d98aac75SLinus Walleij	depends on MMU
789d98aac75SLinus Walleij	select CPU_ARM926T
790bc581770SLinus Walleij	select HAVE_TCM
791d98aac75SLinus Walleij	select ARM_AMBA
792d98aac75SLinus Walleij	select ARM_VIC
793d98aac75SLinus Walleij	select GENERIC_CLOCKEVENTS
794d98aac75SLinus Walleij	select COMMON_CLKDEV
795d98aac75SLinus Walleij	select GENERIC_GPIO
796d98aac75SLinus Walleij	help
797d98aac75SLinus Walleij	  Support for ST-Ericsson U300 series mobile platforms.
798d98aac75SLinus Walleij
799ccf50e23SRussell Kingconfig ARCH_U8500
800ccf50e23SRussell King	bool "ST-Ericsson U8500 Series"
801ccf50e23SRussell King	select CPU_V7
802ccf50e23SRussell King	select ARM_AMBA
803ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
804ccf50e23SRussell King	select COMMON_CLKDEV
80594bdc0e2SRabin Vincent	select ARCH_REQUIRE_GPIOLIB
806ccf50e23SRussell King	help
807ccf50e23SRussell King	  Support for ST-Ericsson's Ux500 architecture
808ccf50e23SRussell King
809ccf50e23SRussell Kingconfig ARCH_NOMADIK
810ccf50e23SRussell King	bool "STMicroelectronics Nomadik"
811ccf50e23SRussell King	select ARM_AMBA
812ccf50e23SRussell King	select ARM_VIC
813ccf50e23SRussell King	select CPU_ARM926T
814ccf50e23SRussell King	select COMMON_CLKDEV
815ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
816ccf50e23SRussell King	select ARCH_REQUIRE_GPIOLIB
817ccf50e23SRussell King	help
818ccf50e23SRussell King	  Support for the Nomadik platform by ST-Ericsson
819ccf50e23SRussell King
8207c6337e2SKevin Hilmanconfig ARCH_DAVINCI
8217c6337e2SKevin Hilman	bool "TI DaVinci"
8227c6337e2SKevin Hilman	select GENERIC_CLOCKEVENTS
823dce1115bSDavid Brownell	select ARCH_REQUIRE_GPIOLIB
8243bca103aSNicolas Pitre	select ZONE_DMA
8259232fcc9SKevin Hilman	select HAVE_IDE
826c5b736d0SKevin Hilman	select COMMON_CLKDEV
82720e9969bSDavid Brownell	select GENERIC_ALLOCATOR
828ae88e05aSSekhar Nori	select ARCH_HAS_HOLES_MEMORYMODEL
8297c6337e2SKevin Hilman	help
8307c6337e2SKevin Hilman	  Support for TI's DaVinci platform.
8317c6337e2SKevin Hilman
8323b938be6SRussell Kingconfig ARCH_OMAP
8333b938be6SRussell King	bool "TI OMAP"
8349483a578SDavid Brownell	select HAVE_CLK
8357444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
83689c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
83706cad098SKevin Hilman	select GENERIC_CLOCKEVENTS
8389af915daSSriram	select ARCH_HAS_HOLES_MEMORYMODEL
8393b938be6SRussell King	help
8406e457bb0SLennert Buytenhek	  Support for TI's OMAP platform (OMAP1/2/3/4).
8413b938be6SRussell King
842cee37e50Sviresh kumarconfig PLAT_SPEAR
843cee37e50Sviresh kumar	bool "ST SPEAr"
844cee37e50Sviresh kumar	select ARM_AMBA
845cee37e50Sviresh kumar	select ARCH_REQUIRE_GPIOLIB
846cee37e50Sviresh kumar	select COMMON_CLKDEV
847cee37e50Sviresh kumar	select GENERIC_CLOCKEVENTS
848cee37e50Sviresh kumar	select HAVE_CLK
849cee37e50Sviresh kumar	help
850cee37e50Sviresh kumar	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
851cee37e50Sviresh kumar
8521da177e4SLinus Torvaldsendchoice
8531da177e4SLinus Torvalds
854ccf50e23SRussell King#
855ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname.  However, plat-*
856ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the
857ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source.
858ccf50e23SRussell King#
85995b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig"
86095b8f20fSRussell King
86195b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig"
86295b8f20fSRussell King
86395b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig"
86495b8f20fSRussell King
8651da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
8661da177e4SLinus Torvalds
867d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig"
868d94f944eSAnton Vorontsov
86995b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig"
87095b8f20fSRussell King
87195b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig"
87295b8f20fSRussell King
873e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
874e7736d47SLennert Buytenhek
8751da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
8761da177e4SLinus Torvalds
87759d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig"
87859d3a193SPaulius Zaleckas
87995b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig"
88095b8f20fSRussell King
8811da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
8821da177e4SLinus Torvalds
8833f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig"
8843f7e5815SLennert Buytenhek
8853f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig"
8861da177e4SLinus Torvalds
887285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig"
888285f5fa7SDan Williams
8891da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
8901da177e4SLinus Torvalds
8911da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
8921da177e4SLinus Torvalds
893c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig"
894c4713074SLennert Buytenhek
89595b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig"
89695b8f20fSRussell King
89795b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig"
89895b8f20fSRussell King
89995b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig"
90095b8f20fSRussell King
901777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig"
902777f9bebSLennert Buytenhek
90340805949SKevin Wellssource "arch/arm/mach-lpc32xx/Kconfig"
90440805949SKevin Wells
90595b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig"
90695b8f20fSRussell King
907794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig"
908794d15b2SStanislav Samsonov
90995b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig"
9101da177e4SLinus Torvalds
91195b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig"
91249cbe786SEric Miao
91395b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig"
91495b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig"
91595b8f20fSRussell King
91695b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig"
9171da177e4SLinus Torvalds
918d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig"
919d91a8910SRussell King
920d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
921d48af15eSTony Lindgren
922d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
9231da177e4SLinus Torvalds
9241dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
9251dbae815STony Lindgren
9269dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig"
927585cf175STzachi Perelstein
92895b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig"
92995b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig"
9301da177e4SLinus Torvalds
93195b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig"
93295b8f20fSRussell King
93395b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig"
93495b8f20fSRussell King
93595b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig"
936edabd38eSSaeed Bishara
937cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig"
938a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig"
939c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig"
940a21765a7SBen Dooks
941cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig"
942a21765a7SBen Dooks
94383ef3338SHans J. Kochsource "arch/arm/plat-tcc/Kconfig"
94483ef3338SHans J. Koch
945a21765a7SBen Dooksif ARCH_S3C2410
946a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig"
9471da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
948a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig"
949f1290a49SYauhen Kharuzhysource "arch/arm/mach-s3c2416/Kconfig"
950a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig"
951e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig"
952a21765a7SBen Dooksendif
9531da177e4SLinus Torvalds
954a08ab637SBen Dooksif ARCH_S3C64XX
955431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig"
956a08ab637SBen Dooksendif
957a08ab637SBen Dooks
95849b7a491SKukjin Kimsource "arch/arm/mach-s5p64x0/Kconfig"
959c4ffccddSKukjin Kim
960550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig"
9617bd0f2f5Sdmitry pervushin
9625a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig"
9635a7652f2SByungho Min
964170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig"
965170f4e42SKukjin Kim
966cc0e72b8SChanghwan Younsource "arch/arm/mach-s5pv310/Kconfig"
967cc0e72b8SChanghwan Youn
968882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig"
9691da177e4SLinus Torvalds
970882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig"
9719e73c84cSBrian Swetland
972c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig"
973c5f80065SErik Gilling
97495b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig"
97552c543f9SQuinn Jensen
97695b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig"
9771da177e4SLinus Torvalds
9781da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
9791da177e4SLinus Torvalds
980ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig"
981ceade897SRussell King
9827ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig"
9837ec80ddfSwanzongshun
9841da177e4SLinus Torvalds# Definitions to make life easier
9851da177e4SLinus Torvaldsconfig ARCH_ACORN
9861da177e4SLinus Torvalds	bool
9871da177e4SLinus Torvalds
9887ae1f7ecSLennert Buytenhekconfig PLAT_IOP
9897ae1f7ecSLennert Buytenhek	bool
990469d3044SMikael Pettersson	select GENERIC_CLOCKEVENTS
9917ae1f7ecSLennert Buytenhek
99269b02f6aSLennert Buytenhekconfig PLAT_ORION
99369b02f6aSLennert Buytenhek	bool
99469b02f6aSLennert Buytenhek
995bd5ce433SEric Miaoconfig PLAT_PXA
996bd5ce433SEric Miao	bool
997bd5ce433SEric Miao
998f4b8b319SRussell Kingconfig PLAT_VERSATILE
999f4b8b319SRussell King	bool
1000f4b8b319SRussell King
1001e3887714SRussell Kingconfig ARM_TIMER_SP804
1002e3887714SRussell King	bool
1003e3887714SRussell King
10041da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
10051da177e4SLinus Torvalds
1006afe4b25eSLennert Buytenhekconfig IWMMXT
1007afe4b25eSLennert Buytenhek	bool "Enable iWMMXt support"
100840305a58SEric Miao	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
100940305a58SEric Miao	default y if PXA27x || PXA3xx || ARCH_MMP
1010afe4b25eSLennert Buytenhek	help
1011afe4b25eSLennert Buytenhek	  Enable support for iWMMXt context switching at run time if
1012afe4b25eSLennert Buytenhek	  running on a CPU that supports it.
1013afe4b25eSLennert Buytenhek
10141da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
10151da177e4SLinus Torvaldsconfig XSCALE_PMU
10161da177e4SLinus Torvalds	bool
10171da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
10181da177e4SLinus Torvalds	default y
10191da177e4SLinus Torvalds
10200f4f0672SJamie Ilesconfig CPU_HAS_PMU
10218954bb0dSWill Deacon	depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
10228954bb0dSWill Deacon		   (!ARCH_OMAP3 || OMAP3_EMU)
10230f4f0672SJamie Iles	default y
10240f4f0672SJamie Iles	bool
10250f4f0672SJamie Iles
10263b93e7b0SHyok S. Choiif !MMU
10273b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
10283b93e7b0SHyok S. Choiendif
10293b93e7b0SHyok S. Choi
10309cba3cccSCatalin Marinasconfig ARM_ERRATA_411920
10319cba3cccSCatalin Marinas	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
103281d11955STony Lindgren	depends on CPU_V6
10339cba3cccSCatalin Marinas	help
10349cba3cccSCatalin Marinas	  Invalidation of the Instruction Cache operation can
10359cba3cccSCatalin Marinas	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
10369cba3cccSCatalin Marinas	  It does not affect the MPCore. This option enables the ARM Ltd.
10379cba3cccSCatalin Marinas	  recommended workaround.
10389cba3cccSCatalin Marinas
10397ce236fcSCatalin Marinasconfig ARM_ERRATA_430973
10407ce236fcSCatalin Marinas	bool "ARM errata: Stale prediction on replaced interworking branch"
10417ce236fcSCatalin Marinas	depends on CPU_V7
10427ce236fcSCatalin Marinas	help
10437ce236fcSCatalin Marinas	  This option enables the workaround for the 430973 Cortex-A8
10447ce236fcSCatalin Marinas	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
10457ce236fcSCatalin Marinas	  interworking branch is replaced with another code sequence at the
10467ce236fcSCatalin Marinas	  same virtual address, whether due to self-modifying code or virtual
10477ce236fcSCatalin Marinas	  to physical address re-mapping, Cortex-A8 does not recover from the
10487ce236fcSCatalin Marinas	  stale interworking branch prediction. This results in Cortex-A8
10497ce236fcSCatalin Marinas	  executing the new code sequence in the incorrect ARM or Thumb state.
10507ce236fcSCatalin Marinas	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
10517ce236fcSCatalin Marinas	  and also flushes the branch target cache at every context switch.
10527ce236fcSCatalin Marinas	  Note that setting specific bits in the ACTLR register may not be
10537ce236fcSCatalin Marinas	  available in non-secure mode.
10547ce236fcSCatalin Marinas
1055855c551fSCatalin Marinasconfig ARM_ERRATA_458693
1056855c551fSCatalin Marinas	bool "ARM errata: Processor deadlock when a false hazard is created"
1057855c551fSCatalin Marinas	depends on CPU_V7
1058855c551fSCatalin Marinas	help
1059855c551fSCatalin Marinas	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1060855c551fSCatalin Marinas	  erratum. For very specific sequences of memory operations, it is
1061855c551fSCatalin Marinas	  possible for a hazard condition intended for a cache line to instead
1062855c551fSCatalin Marinas	  be incorrectly associated with a different cache line. This false
1063855c551fSCatalin Marinas	  hazard might then cause a processor deadlock. The workaround enables
1064855c551fSCatalin Marinas	  the L1 caching of the NEON accesses and disables the PLD instruction
1065855c551fSCatalin Marinas	  in the ACTLR register. Note that setting specific bits in the ACTLR
1066855c551fSCatalin Marinas	  register may not be available in non-secure mode.
1067855c551fSCatalin Marinas
10680516e464SCatalin Marinasconfig ARM_ERRATA_460075
10690516e464SCatalin Marinas	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
10700516e464SCatalin Marinas	depends on CPU_V7
10710516e464SCatalin Marinas	help
10720516e464SCatalin Marinas	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
10730516e464SCatalin Marinas	  erratum. Any asynchronous access to the L2 cache may encounter a
10740516e464SCatalin Marinas	  situation in which recent store transactions to the L2 cache are lost
10750516e464SCatalin Marinas	  and overwritten with stale memory contents from external memory. The
10760516e464SCatalin Marinas	  workaround disables the write-allocate mode for the L2 cache via the
10770516e464SCatalin Marinas	  ACTLR register. Note that setting specific bits in the ACTLR register
10780516e464SCatalin Marinas	  may not be available in non-secure mode.
10790516e464SCatalin Marinas
10809f05027cSWill Deaconconfig ARM_ERRATA_742230
10819f05027cSWill Deacon	bool "ARM errata: DMB operation may be faulty"
10829f05027cSWill Deacon	depends on CPU_V7 && SMP
10839f05027cSWill Deacon	help
10849f05027cSWill Deacon	  This option enables the workaround for the 742230 Cortex-A9
10859f05027cSWill Deacon	  (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
10869f05027cSWill Deacon	  between two write operations may not ensure the correct visibility
10879f05027cSWill Deacon	  ordering of the two writes. This workaround sets a specific bit in
10889f05027cSWill Deacon	  the diagnostic register of the Cortex-A9 which causes the DMB
10899f05027cSWill Deacon	  instruction to behave as a DSB, ensuring the correct behaviour of
10909f05027cSWill Deacon	  the two writes.
10919f05027cSWill Deacon
1092a672e99bSWill Deaconconfig ARM_ERRATA_742231
1093a672e99bSWill Deacon	bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1094a672e99bSWill Deacon	depends on CPU_V7 && SMP
1095a672e99bSWill Deacon	help
1096a672e99bSWill Deacon	  This option enables the workaround for the 742231 Cortex-A9
1097a672e99bSWill Deacon	  (r2p0..r2p2) erratum. Under certain conditions, specific to the
1098a672e99bSWill Deacon	  Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1099a672e99bSWill Deacon	  accessing some data located in the same cache line, may get corrupted
1100a672e99bSWill Deacon	  data due to bad handling of the address hazard when the line gets
1101a672e99bSWill Deacon	  replaced from one of the CPUs at the same time as another CPU is
1102a672e99bSWill Deacon	  accessing it. This workaround sets specific bits in the diagnostic
1103a672e99bSWill Deacon	  register of the Cortex-A9 which reduces the linefill issuing
1104a672e99bSWill Deacon	  capabilities of the processor.
1105a672e99bSWill Deacon
11069e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369
11079e65582aSSantosh Shilimkar	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
11089e65582aSSantosh Shilimkar	depends on CACHE_L2X0 && ARCH_OMAP4
11099e65582aSSantosh Shilimkar	help
11109e65582aSSantosh Shilimkar	   The PL310 L2 cache controller implements three types of Clean &
11119e65582aSSantosh Shilimkar	   Invalidate maintenance operations: by Physical Address
11129e65582aSSantosh Shilimkar	   (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
11139e65582aSSantosh Shilimkar	   They are architecturally defined to behave as the execution of a
11149e65582aSSantosh Shilimkar	   clean operation followed immediately by an invalidate operation,
11159e65582aSSantosh Shilimkar	   both performing to the same memory location. This functionality
11169e65582aSSantosh Shilimkar	   is not correctly implemented in PL310 as clean lines are not
11179e65582aSSantosh Shilimkar	   invalidated as a result of these operations. Note that this errata
11189e65582aSSantosh Shilimkar	   uses Texas Instrument's secure monitor api.
1119cdf357f1SWill Deacon
1120cdf357f1SWill Deaconconfig ARM_ERRATA_720789
1121cdf357f1SWill Deacon	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1122cdf357f1SWill Deacon	depends on CPU_V7 && SMP
1123cdf357f1SWill Deacon	help
1124cdf357f1SWill Deacon	  This option enables the workaround for the 720789 Cortex-A9 (prior to
1125cdf357f1SWill Deacon	  r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1126cdf357f1SWill Deacon	  broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1127cdf357f1SWill Deacon	  As a consequence of this erratum, some TLB entries which should be
1128cdf357f1SWill Deacon	  invalidated are not, resulting in an incoherency in the system page
1129cdf357f1SWill Deacon	  tables. The workaround changes the TLB flushing routines to invalidate
1130cdf357f1SWill Deacon	  entries regardless of the ASID.
1131475d92fcSWill Deacon
1132475d92fcSWill Deaconconfig ARM_ERRATA_743622
1133475d92fcSWill Deacon	bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1134475d92fcSWill Deacon	depends on CPU_V7
1135475d92fcSWill Deacon	help
1136475d92fcSWill Deacon	  This option enables the workaround for the 743622 Cortex-A9
1137475d92fcSWill Deacon	  (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1138475d92fcSWill Deacon	  optimisation in the Cortex-A9 Store Buffer may lead to data
1139475d92fcSWill Deacon	  corruption. This workaround sets a specific bit in the diagnostic
1140475d92fcSWill Deacon	  register of the Cortex-A9 which disables the Store Buffer
1141475d92fcSWill Deacon	  optimisation, preventing the defect from occurring. This has no
1142475d92fcSWill Deacon	  visible impact on the overall performance or power consumption of the
1143475d92fcSWill Deacon	  processor.
1144475d92fcSWill Deacon
11451da177e4SLinus Torvaldsendmenu
11461da177e4SLinus Torvalds
11471da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
11481da177e4SLinus Torvalds
11491da177e4SLinus Torvaldsmenu "Bus support"
11501da177e4SLinus Torvalds
11511da177e4SLinus Torvaldsconfig ARM_AMBA
11521da177e4SLinus Torvalds	bool
11531da177e4SLinus Torvalds
11541da177e4SLinus Torvaldsconfig ISA
11551da177e4SLinus Torvalds	bool
11561da177e4SLinus Torvalds	help
11571da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
11581da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
11591da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
11601da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
11611da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
11621da177e4SLinus Torvalds
1163065909b9SRussell King# Select ISA DMA controller support
11641da177e4SLinus Torvaldsconfig ISA_DMA
11651da177e4SLinus Torvalds	bool
1166065909b9SRussell King	select ISA_DMA_API
11671da177e4SLinus Torvalds
1168065909b9SRussell King# Select ISA DMA interface
11695cae841bSAl Viroconfig ISA_DMA_API
11705cae841bSAl Viro	bool
11715cae841bSAl Viro
11721da177e4SLinus Torvaldsconfig PCI
11735f32f7a0SAnton Vorontsov	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
11741da177e4SLinus Torvalds	help
11751da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
11761da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
11771da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
11781da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
11791da177e4SLinus Torvalds
118052882173SAnton Vorontsovconfig PCI_DOMAINS
118152882173SAnton Vorontsov	bool
118252882173SAnton Vorontsov	depends on PCI
118352882173SAnton Vorontsov
118436e23590SMatthew Wilcoxconfig PCI_SYSCALL
118536e23590SMatthew Wilcox	def_bool PCI
118636e23590SMatthew Wilcox
11871da177e4SLinus Torvalds# Select the host bridge type
11881da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
11891da177e4SLinus Torvalds	bool
11901da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
11911da177e4SLinus Torvalds	default y
11921da177e4SLinus Torvalds
1193a0113a99SMike Rapoportconfig PCI_HOST_ITE8152
1194a0113a99SMike Rapoport	bool
1195a0113a99SMike Rapoport	depends on PCI && MACH_ARMCORE
1196a0113a99SMike Rapoport	default y
1197a0113a99SMike Rapoport	select DMABOUNCE
1198a0113a99SMike Rapoport
11991da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
12001da177e4SLinus Torvalds
12011da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
12021da177e4SLinus Torvalds
12031da177e4SLinus Torvaldsendmenu
12041da177e4SLinus Torvalds
12051da177e4SLinus Torvaldsmenu "Kernel Features"
12061da177e4SLinus Torvalds
12070567a0c0SKevin Hilmansource "kernel/time/Kconfig"
12080567a0c0SKevin Hilman
12091da177e4SLinus Torvaldsconfig SMP
12101da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1211971acb9bSRussell King	depends on EXPERIMENTAL
1212bc28248eSRussell King	depends on GENERIC_CLOCKEVENTS
1213971acb9bSRussell King	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1214971acb9bSRussell King		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
121589c3dedfSDaniel Walker		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
121689c3dedfSDaniel Walker		 ARCH_MSM_SCORPIONMP
1217f6dd9fa5SJens Axboe	select USE_GENERIC_SMP_HELPERS
121889c3dedfSDaniel Walker	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
12191da177e4SLinus Torvalds	help
12201da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
12211da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
12221da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
12231da177e4SLinus Torvalds
12241da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
12251da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
12261da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
12271da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
12281da177e4SLinus Torvalds	  run faster if you say N here.
12291da177e4SLinus Torvalds
123003502faaSAdrian Bunk	  See also <file:Documentation/i386/IO-APIC.txt>,
12311da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
123250a23e6eSJustin P. Mattock	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
12331da177e4SLinus Torvalds
12341da177e4SLinus Torvalds	  If you don't know what to do here, say N.
12351da177e4SLinus Torvalds
1236f00ec48fSRussell Kingconfig SMP_ON_UP
1237f00ec48fSRussell King	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1238f00ec48fSRussell King	depends on EXPERIMENTAL
1239f00ec48fSRussell King	depends on SMP && !XIP && !THUMB2_KERNEL
1240f00ec48fSRussell King	default y
1241f00ec48fSRussell King	help
1242f00ec48fSRussell King	  SMP kernels contain instructions which fail on non-SMP processors.
1243f00ec48fSRussell King	  Enabling this option allows the kernel to modify itself to make
1244f00ec48fSRussell King	  these instructions safe.  Disabling it allows about 1K of space
1245f00ec48fSRussell King	  savings.
1246f00ec48fSRussell King
1247f00ec48fSRussell King	  If you don't know what to do here, say Y.
1248f00ec48fSRussell King
1249a8cbcd92SRussell Kingconfig HAVE_ARM_SCU
1250a8cbcd92SRussell King	bool
1251a8cbcd92SRussell King	depends on SMP
1252a8cbcd92SRussell King	help
1253a8cbcd92SRussell King	  This option enables support for the ARM system coherency unit
1254a8cbcd92SRussell King
1255f32f4ce2SRussell Kingconfig HAVE_ARM_TWD
1256f32f4ce2SRussell King	bool
1257f32f4ce2SRussell King	depends on SMP
1258f32f4ce2SRussell King	help
1259f32f4ce2SRussell King	  This options enables support for the ARM timer and watchdog unit
1260f32f4ce2SRussell King
12618d5796d2SLennert Buytenhekchoice
12628d5796d2SLennert Buytenhek	prompt "Memory split"
12638d5796d2SLennert Buytenhek	default VMSPLIT_3G
12648d5796d2SLennert Buytenhek	help
12658d5796d2SLennert Buytenhek	  Select the desired split between kernel and user memory.
12668d5796d2SLennert Buytenhek
12678d5796d2SLennert Buytenhek	  If you are not absolutely sure what you are doing, leave this
12688d5796d2SLennert Buytenhek	  option alone!
12698d5796d2SLennert Buytenhek
12708d5796d2SLennert Buytenhek	config VMSPLIT_3G
12718d5796d2SLennert Buytenhek		bool "3G/1G user/kernel split"
12728d5796d2SLennert Buytenhek	config VMSPLIT_2G
12738d5796d2SLennert Buytenhek		bool "2G/2G user/kernel split"
12748d5796d2SLennert Buytenhek	config VMSPLIT_1G
12758d5796d2SLennert Buytenhek		bool "1G/3G user/kernel split"
12768d5796d2SLennert Buytenhekendchoice
12778d5796d2SLennert Buytenhek
12788d5796d2SLennert Buytenhekconfig PAGE_OFFSET
12798d5796d2SLennert Buytenhek	hex
12808d5796d2SLennert Buytenhek	default 0x40000000 if VMSPLIT_1G
12818d5796d2SLennert Buytenhek	default 0x80000000 if VMSPLIT_2G
12828d5796d2SLennert Buytenhek	default 0xC0000000
12838d5796d2SLennert Buytenhek
12841da177e4SLinus Torvaldsconfig NR_CPUS
12851da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
12861da177e4SLinus Torvalds	range 2 32
12871da177e4SLinus Torvalds	depends on SMP
12881da177e4SLinus Torvalds	default "4"
12891da177e4SLinus Torvalds
1290a054a811SRussell Kingconfig HOTPLUG_CPU
1291a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1292a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
1293176bfc44SDaniel Walker	depends on !ARCH_MSM
1294a054a811SRussell King	help
1295a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
1296a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
1297a054a811SRussell King
129837ee16aeSRussell Kingconfig LOCAL_TIMERS
129937ee16aeSRussell King	bool "Use local timer interrupts"
1300971acb9bSRussell King	depends on SMP
130137ee16aeSRussell King	default y
130289c3dedfSDaniel Walker	select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
130337ee16aeSRussell King	help
130437ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
130537ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
130637ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
130737ee16aeSRussell King	  "thundering herd" at every timer tick.
130837ee16aeSRussell King
1309d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt
13101da177e4SLinus Torvalds
1311f8065813SRussell Kingconfig HZ
1312f8065813SRussell King	int
131349b7a491SKukjin Kim	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
13142192482eSRussell King		ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
1315bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
13165248c657SDavid Brownell	default AT91_TIMER_HZ if ARCH_AT91
13175da3e714SMagnus Damm	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1318f8065813SRussell King	default 100
1319f8065813SRussell King
132016c79651SCatalin Marinasconfig THUMB2_KERNEL
132116c79651SCatalin Marinas	bool "Compile the kernel in Thumb-2 mode"
132216c79651SCatalin Marinas	depends on CPU_V7 && EXPERIMENTAL
132316c79651SCatalin Marinas	select AEABI
132416c79651SCatalin Marinas	select ARM_ASM_UNIFIED
132516c79651SCatalin Marinas	help
132616c79651SCatalin Marinas	  By enabling this option, the kernel will be compiled in
132716c79651SCatalin Marinas	  Thumb-2 mode. A compiler/assembler that understand the unified
132816c79651SCatalin Marinas	  ARM-Thumb syntax is needed.
132916c79651SCatalin Marinas
133016c79651SCatalin Marinas	  If unsure, say N.
133116c79651SCatalin Marinas
13320becb088SCatalin Marinasconfig ARM_ASM_UNIFIED
13330becb088SCatalin Marinas	bool
13340becb088SCatalin Marinas
1335704bdda0SNicolas Pitreconfig AEABI
1336704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
1337704bdda0SNicolas Pitre	help
1338704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
1339704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
1340704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
1341704bdda0SNicolas Pitre
1342704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
1343704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
1344704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
1345704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
1346704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
1347704bdda0SNicolas Pitre
1348704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
1349704bdda0SNicolas Pitre
13506c90c872SNicolas Pitreconfig OABI_COMPAT
1351a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
135261c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
13536c90c872SNicolas Pitre	default y
13546c90c872SNicolas Pitre	help
13556c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
13566c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
13576c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
13586c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
13596c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
13606c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
13616c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
13626c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
13636c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
13646c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
13656c90c872SNicolas Pitre	  at all). If in doubt say Y.
13666c90c872SNicolas Pitre
1367eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL
1368e80d6a24SMel Gorman	bool
1369e80d6a24SMel Gorman
137005944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE
137105944d74SRussell King	bool
137205944d74SRussell King
137307a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT
137407a2f737SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
137507a2f737SRussell King
137605944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL
1377be370302SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
1378c80d79d7SYasunori Goto
1379053a96caSNicolas Pitreconfig HIGHMEM
1380053a96caSNicolas Pitre	bool "High Memory Support (EXPERIMENTAL)"
1381053a96caSNicolas Pitre	depends on MMU && EXPERIMENTAL
1382053a96caSNicolas Pitre	help
1383053a96caSNicolas Pitre	  The address space of ARM processors is only 4 Gigabytes large
1384053a96caSNicolas Pitre	  and it has to accommodate user address space, kernel address
1385053a96caSNicolas Pitre	  space as well as some memory mapped IO. That means that, if you
1386053a96caSNicolas Pitre	  have a large amount of physical memory and/or IO, not all of the
1387053a96caSNicolas Pitre	  memory can be "permanently mapped" by the kernel. The physical
1388053a96caSNicolas Pitre	  memory that is not permanently mapped is called "high memory".
1389053a96caSNicolas Pitre
1390053a96caSNicolas Pitre	  Depending on the selected kernel/user memory split, minimum
1391053a96caSNicolas Pitre	  vmalloc space and actual amount of RAM, you may not need this
1392053a96caSNicolas Pitre	  option which should result in a slightly faster kernel.
1393053a96caSNicolas Pitre
1394053a96caSNicolas Pitre	  If unsure, say n.
1395053a96caSNicolas Pitre
139665cec8e3SRussell Kingconfig HIGHPTE
139765cec8e3SRussell King	bool "Allocate 2nd-level pagetables from highmem"
139865cec8e3SRussell King	depends on HIGHMEM
139965cec8e3SRussell King	depends on !OUTER_CACHE
140065cec8e3SRussell King
14011b8873a0SJamie Ilesconfig HW_PERF_EVENTS
14021b8873a0SJamie Iles	bool "Enable hardware performance counter support for perf events"
1403fe166148SWill Deacon	depends on PERF_EVENTS && CPU_HAS_PMU
14041b8873a0SJamie Iles	default y
14051b8873a0SJamie Iles	help
14061b8873a0SJamie Iles	  Enable hardware performance counter support for perf events. If
14071b8873a0SJamie Iles	  disabled, perf events will use software events only.
14081b8873a0SJamie Iles
1409354e6f72Seric miaoconfig SPARSE_IRQ
1410c1ba6ba3Seric miao	def_bool n
1411354e6f72Seric miao	help
1412354e6f72Seric miao	  This enables support for sparse irqs. This is useful in general
1413354e6f72Seric miao	  as most CPUs have a fairly sparse array of IRQ vectors, which
1414354e6f72Seric miao	  the irq_desc then maps directly on to. Systems with a high
1415354e6f72Seric miao	  number of off-chip IRQs will want to treat this as
1416354e6f72Seric miao	  experimental until they have been independently verified.
1417354e6f72Seric miao
14183f22ab27SDave Hansensource "mm/Kconfig"
14193f22ab27SDave Hansen
1420c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER
1421c1b2d970SMagnus Damm	int "Maximum zone order" if ARCH_SHMOBILE
1422c1b2d970SMagnus Damm	range 11 64 if ARCH_SHMOBILE
1423c1b2d970SMagnus Damm	default "9" if SA1111
1424c1b2d970SMagnus Damm	default "11"
1425c1b2d970SMagnus Damm	help
1426c1b2d970SMagnus Damm	  The kernel memory allocator divides physically contiguous memory
1427c1b2d970SMagnus Damm	  blocks into "zones", where each zone is a power of two number of
1428c1b2d970SMagnus Damm	  pages.  This option selects the largest power of two that the kernel
1429c1b2d970SMagnus Damm	  keeps in the memory allocator.  If you need to allocate very large
1430c1b2d970SMagnus Damm	  blocks of physically contiguous memory, then you may need to
1431c1b2d970SMagnus Damm	  increase this value.
1432c1b2d970SMagnus Damm
1433c1b2d970SMagnus Damm	  This config option is actually maximum order plus one. For example,
1434c1b2d970SMagnus Damm	  a value of 11 means that the largest free memory block is 2^10 pages.
1435c1b2d970SMagnus Damm
14361da177e4SLinus Torvaldsconfig LEDS
14371da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
1438e055d5bfSAdrian Bunk	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
14398c8fdbc9SSascha Hauer		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
14401da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
14411da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
144273a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
144325329671SJürgen Schindele		   ARCH_AT91 || ARCH_DAVINCI || \
1444ff3042fbSColin Tuckley		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
14451da177e4SLinus Torvalds	help
14461da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
14471da177e4SLinus Torvalds	  to provide useful information about your current system status.
14481da177e4SLinus Torvalds
14491da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
14501da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
14511da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
14521da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
14531da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
14541da177e4SLinus Torvalds	  system, but the driver will do nothing.
14551da177e4SLinus Torvalds
14561da177e4SLinus Torvaldsconfig LEDS_TIMER
14571da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1458eebdf7d7SDavid Brownell			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1459eebdf7d7SDavid Brownell			    || MACH_OMAP_PERSEUS2
14601da177e4SLinus Torvalds	depends on LEDS
14610567a0c0SKevin Hilman	depends on !GENERIC_CLOCKEVENTS
14621da177e4SLinus Torvalds	default y if ARCH_EBSA110
14631da177e4SLinus Torvalds	help
14641da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
14651da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
14661da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
14671da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
14681da177e4SLinus Torvalds	  debugging unstable kernels.
14691da177e4SLinus Torvalds
14701da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
14711da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
14721da177e4SLinus Torvalds	  will overrule the CPU usage LED.
14731da177e4SLinus Torvalds
14741da177e4SLinus Torvaldsconfig LEDS_CPU
14751da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1476eebdf7d7SDavid Brownell			!ARCH_OMAP) \
1477eebdf7d7SDavid Brownell			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1478eebdf7d7SDavid Brownell			|| MACH_OMAP_PERSEUS2
14791da177e4SLinus Torvalds	depends on LEDS
14801da177e4SLinus Torvalds	help
14811da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
14821da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
14831da177e4SLinus Torvalds	  is not currently executing.
14841da177e4SLinus Torvalds
14851da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
14861da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
14871da177e4SLinus Torvalds	  will overrule the CPU usage LED.
14881da177e4SLinus Torvalds
14891da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
14901da177e4SLinus Torvalds	bool
1491f12d0d7cSHyok S. Choi	depends on CPU_CP15_MMU
14921da177e4SLinus Torvalds	default y if !ARCH_EBSA110
1493e119bfffSRussell King	select HAVE_PROC_CPU if PROC_FS
14941da177e4SLinus Torvalds	help
14951da177e4SLinus Torvalds	  ARM processors cannot fetch/store information which is not
14961da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
14971da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
14981da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
14991da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
15001da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
15011da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
15021da177e4SLinus Torvalds
150339ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY
150439ec58f3SLennert Buytenhek	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
150539ec58f3SLennert Buytenhek	depends on MMU && EXPERIMENTAL
150639ec58f3SLennert Buytenhek	default y if CPU_FEROCEON
150739ec58f3SLennert Buytenhek	help
150839ec58f3SLennert Buytenhek	  Implement faster copy_to_user and clear_user methods for CPU
150939ec58f3SLennert Buytenhek	  cores where a 8-word STM instruction give significantly higher
151039ec58f3SLennert Buytenhek	  memory write throughput than a sequence of individual 32bit stores.
151139ec58f3SLennert Buytenhek
151239ec58f3SLennert Buytenhek	  A possible side effect is a slight increase in scheduling latency
151339ec58f3SLennert Buytenhek	  between threads sharing the same address space if they invoke
151439ec58f3SLennert Buytenhek	  such copy operations with large buffers.
151539ec58f3SLennert Buytenhek
151639ec58f3SLennert Buytenhek	  However, if the CPU data cache is using a write-allocate mode,
151739ec58f3SLennert Buytenhek	  this option is unlikely to provide any performance gain.
151839ec58f3SLennert Buytenhek
151970c70d97SNicolas Pitreconfig SECCOMP
152070c70d97SNicolas Pitre	bool
152170c70d97SNicolas Pitre	prompt "Enable seccomp to safely compute untrusted bytecode"
152270c70d97SNicolas Pitre	---help---
152370c70d97SNicolas Pitre	  This kernel feature is useful for number crunching applications
152470c70d97SNicolas Pitre	  that may need to compute untrusted bytecode during their
152570c70d97SNicolas Pitre	  execution. By using pipes or other transports made available to
152670c70d97SNicolas Pitre	  the process as file descriptors supporting the read/write
152770c70d97SNicolas Pitre	  syscalls, it's possible to isolate those applications in
152870c70d97SNicolas Pitre	  their own address space using seccomp. Once seccomp is
152970c70d97SNicolas Pitre	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
153070c70d97SNicolas Pitre	  and the task is only allowed to execute a few safe syscalls
153170c70d97SNicolas Pitre	  defined by each seccomp mode.
153270c70d97SNicolas Pitre
1533c743f380SNicolas Pitreconfig CC_STACKPROTECTOR
1534c743f380SNicolas Pitre	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1535c743f380SNicolas Pitre	help
1536c743f380SNicolas Pitre	  This option turns on the -fstack-protector GCC feature. This
1537c743f380SNicolas Pitre	  feature puts, at the beginning of functions, a canary value on
1538c743f380SNicolas Pitre	  the stack just before the return address, and validates
1539c743f380SNicolas Pitre	  the value just before actually returning.  Stack based buffer
1540c743f380SNicolas Pitre	  overflows (that need to overwrite this return address) now also
1541c743f380SNicolas Pitre	  overwrite the canary, which gets detected and the attack is then
1542c743f380SNicolas Pitre	  neutralized via a kernel panic.
1543c743f380SNicolas Pitre	  This feature requires gcc version 4.2 or above.
1544c743f380SNicolas Pitre
154573a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT
154673a65b3fSUwe Kleine-König	bool "Provide old way to pass kernel parameters"
154773a65b3fSUwe Kleine-König	help
154873a65b3fSUwe Kleine-König	  This was deprecated in 2001 and announced to live on for 5 years.
154973a65b3fSUwe Kleine-König	  Some old boot loaders still use this way.
155073a65b3fSUwe Kleine-König
15511da177e4SLinus Torvaldsendmenu
15521da177e4SLinus Torvalds
15531da177e4SLinus Torvaldsmenu "Boot options"
15541da177e4SLinus Torvalds
15551da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
15561da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
15571da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
15581da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
15591da177e4SLinus Torvalds	default "0"
15601da177e4SLinus Torvalds	help
15611da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
15621da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
15631da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
15641da177e4SLinus Torvalds	  value in their defconfig file.
15651da177e4SLinus Torvalds
15661da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
15671da177e4SLinus Torvalds
15681da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
15691da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
15701da177e4SLinus Torvalds	default "0"
15711da177e4SLinus Torvalds	help
1572f8c440b2SDan Fandrich	  The base address of an area of read/write memory in the target
1573f8c440b2SDan Fandrich	  for the ROM-able zImage which must be available while the
1574f8c440b2SDan Fandrich	  decompressor is running. It must be large enough to hold the
1575f8c440b2SDan Fandrich	  entire decompressed kernel plus an additional 128 KiB.
1576f8c440b2SDan Fandrich	  Platforms which normally make use of ROM-able zImage formats
1577f8c440b2SDan Fandrich	  normally set this to a suitable value in their defconfig file.
15781da177e4SLinus Torvalds
15791da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
15801da177e4SLinus Torvalds
15811da177e4SLinus Torvaldsconfig ZBOOT_ROM
15821da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
15831da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
15841da177e4SLinus Torvalds	help
15851da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
15861da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
15871da177e4SLinus Torvalds
15881da177e4SLinus Torvaldsconfig CMDLINE
15891da177e4SLinus Torvalds	string "Default kernel command string"
15901da177e4SLinus Torvalds	default ""
15911da177e4SLinus Torvalds	help
15921da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
15931da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
15941da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
15951da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
15961da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
15971da177e4SLinus Torvalds
159892d2040dSAlexander Hollerconfig CMDLINE_FORCE
159992d2040dSAlexander Holler	bool "Always use the default kernel command string"
160092d2040dSAlexander Holler	depends on CMDLINE != ""
160192d2040dSAlexander Holler	help
160292d2040dSAlexander Holler	  Always use the default kernel command string, even if the boot
160392d2040dSAlexander Holler	  loader passes other arguments to the kernel.
160492d2040dSAlexander Holler	  This is useful if you cannot or don't want to change the
160592d2040dSAlexander Holler	  command-line options your boot loader passes to the kernel.
160692d2040dSAlexander Holler
160792d2040dSAlexander Holler	  If unsure, say N.
160892d2040dSAlexander Holler
16091da177e4SLinus Torvaldsconfig XIP_KERNEL
16101da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
16111da177e4SLinus Torvalds	depends on !ZBOOT_ROM
16121da177e4SLinus Torvalds	help
16131da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
16141da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
16151da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
16161da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
16171da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
16181da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
16191da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
16201da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
16211da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
16221da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
16231da177e4SLinus Torvalds
16241da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
16251da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
16261da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
16271da177e4SLinus Torvalds
16281da177e4SLinus Torvalds	  If unsure, say N.
16291da177e4SLinus Torvalds
16301da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
16311da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
16321da177e4SLinus Torvalds	depends on XIP_KERNEL
16331da177e4SLinus Torvalds	default "0x00080000"
16341da177e4SLinus Torvalds	help
16351da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
16361da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
16371da177e4SLinus Torvalds	  own flash usage.
16381da177e4SLinus Torvalds
1639c587e4a6SRichard Purdieconfig KEXEC
1640c587e4a6SRichard Purdie	bool "Kexec system call (EXPERIMENTAL)"
1641c587e4a6SRichard Purdie	depends on EXPERIMENTAL
1642c587e4a6SRichard Purdie	help
1643c587e4a6SRichard Purdie	  kexec is a system call that implements the ability to shutdown your
1644c587e4a6SRichard Purdie	  current kernel, and to start another kernel.  It is like a reboot
164501dd2fbfSMatt LaPlante	  but it is independent of the system firmware.   And like a reboot
1646c587e4a6SRichard Purdie	  you can start any kernel with it, not just Linux.
1647c587e4a6SRichard Purdie
1648c587e4a6SRichard Purdie	  It is an ongoing process to be certain the hardware in a machine
1649c587e4a6SRichard Purdie	  is properly shutdown, so do not be surprised if this code does not
1650c587e4a6SRichard Purdie	  initially work for you.  It may help to enable device hotplugging
1651c587e4a6SRichard Purdie	  support.
1652c587e4a6SRichard Purdie
16534cd9d6f7SRichard Purdieconfig ATAGS_PROC
16544cd9d6f7SRichard Purdie	bool "Export atags in procfs"
1655b98d7291SUli Luckas	depends on KEXEC
1656b98d7291SUli Luckas	default y
16574cd9d6f7SRichard Purdie	help
16584cd9d6f7SRichard Purdie	  Should the atags used to boot the kernel be exported in an "atags"
16594cd9d6f7SRichard Purdie	  file in procfs. Useful with kexec.
16604cd9d6f7SRichard Purdie
1661e69edc79SEric Miaoconfig AUTO_ZRELADDR
1662e69edc79SEric Miao	bool "Auto calculation of the decompressed kernel image address"
1663e69edc79SEric Miao	depends on !ZBOOT_ROM && !ARCH_U300
1664e69edc79SEric Miao	help
1665e69edc79SEric Miao	  ZRELADDR is the physical address where the decompressed kernel
1666e69edc79SEric Miao	  image will be placed. If AUTO_ZRELADDR is selected, the address
1667e69edc79SEric Miao	  will be determined at run-time by masking the current IP with
1668e69edc79SEric Miao	  0xf8000000. This assumes the zImage being placed in the first 128MB
1669e69edc79SEric Miao	  from start of memory.
1670e69edc79SEric Miao
16711da177e4SLinus Torvaldsendmenu
16721da177e4SLinus Torvalds
1673ac9d7efcSRussell Kingmenu "CPU Power Management"
16741da177e4SLinus Torvalds
167589c52ed4SBen Dooksif ARCH_HAS_CPUFREQ
16761da177e4SLinus Torvalds
16771da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
16781da177e4SLinus Torvalds
167964f102b6SYong Shenconfig CPU_FREQ_IMX
168064f102b6SYong Shen	tristate "CPUfreq driver for i.MX CPUs"
168164f102b6SYong Shen	depends on ARCH_MXC && CPU_FREQ
168264f102b6SYong Shen	help
168364f102b6SYong Shen	  This enables the CPUfreq driver for i.MX CPUs.
168464f102b6SYong Shen
16851da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
16861da177e4SLinus Torvalds	bool
16871da177e4SLinus Torvalds
16881da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
16891da177e4SLinus Torvalds	bool
16901da177e4SLinus Torvalds
16911da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
16921da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
16931da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
16941da177e4SLinus Torvalds	default y
16951da177e4SLinus Torvalds	help
16961da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
16971da177e4SLinus Torvalds
16981da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
16991da177e4SLinus Torvalds
17001da177e4SLinus Torvalds	  If in doubt, say Y.
17011da177e4SLinus Torvalds
17029e2697ffSRussell Kingconfig CPU_FREQ_PXA
17039e2697ffSRussell King	bool
17049e2697ffSRussell King	depends on CPU_FREQ && ARCH_PXA && PXA25x
17059e2697ffSRussell King	default y
17069e2697ffSRussell King	select CPU_FREQ_DEFAULT_GOV_USERSPACE
17079e2697ffSRussell King
1708b3748dddSMark Brownconfig CPU_FREQ_S3C64XX
1709b3748dddSMark Brown	bool "CPUfreq support for Samsung S3C64XX CPUs"
1710b3748dddSMark Brown	depends on CPU_FREQ && CPU_S3C6410
1711b3748dddSMark Brown
17129d56c02aSBen Dooksconfig CPU_FREQ_S3C
17139d56c02aSBen Dooks	bool
17149d56c02aSBen Dooks	help
17159d56c02aSBen Dooks	  Internal configuration node for common cpufreq on Samsung SoC
17169d56c02aSBen Dooks
17179d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX
17189d56c02aSBen Dooks	bool "CPUfreq driver for Samsung S3C24XX series CPUs"
17199d56c02aSBen Dooks	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
17209d56c02aSBen Dooks	select CPU_FREQ_S3C
17219d56c02aSBen Dooks	help
17229d56c02aSBen Dooks	  This enables the CPUfreq driver for the Samsung S3C24XX family
17239d56c02aSBen Dooks	  of CPUs.
17249d56c02aSBen Dooks
17259d56c02aSBen Dooks	  For details, take a look at <file:Documentation/cpu-freq>.
17269d56c02aSBen Dooks
17279d56c02aSBen Dooks	  If in doubt, say N.
17289d56c02aSBen Dooks
17299d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL
17309d56c02aSBen Dooks	bool "Support CPUfreq changing of PLL frequency"
17319d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
17329d56c02aSBen Dooks	help
17339d56c02aSBen Dooks	  Compile in support for changing the PLL frequency from the
17349d56c02aSBen Dooks	  S3C24XX series CPUfreq driver. The PLL takes time to settle
17359d56c02aSBen Dooks	  after a frequency change, so by default it is not enabled.
17369d56c02aSBen Dooks
17379d56c02aSBen Dooks	  This also means that the PLL tables for the selected CPU(s) will
17389d56c02aSBen Dooks	  be built which may increase the size of the kernel image.
17399d56c02aSBen Dooks
17409d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG
17419d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver core"
17429d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
17439d56c02aSBen Dooks	help
17449d56c02aSBen Dooks	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
17459d56c02aSBen Dooks
17469d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG
17479d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver IO timing"
17489d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
17499d56c02aSBen Dooks	help
17509d56c02aSBen Dooks	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
17519d56c02aSBen Dooks
1752e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS
1753e6d197a6SBen Dooks	bool "Export debugfs for CPUFreq"
1754e6d197a6SBen Dooks	depends on CPU_FREQ_S3C24XX && DEBUG_FS
1755e6d197a6SBen Dooks	help
1756e6d197a6SBen Dooks	  Export status information via debugfs.
1757e6d197a6SBen Dooks
17581da177e4SLinus Torvaldsendif
17591da177e4SLinus Torvalds
1760ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig"
1761ac9d7efcSRussell King
1762ac9d7efcSRussell Kingendmenu
1763ac9d7efcSRussell King
17641da177e4SLinus Torvaldsmenu "Floating point emulation"
17651da177e4SLinus Torvalds
17661da177e4SLinus Torvaldscomment "At least one emulation must be selected"
17671da177e4SLinus Torvalds
17681da177e4SLinus Torvaldsconfig FPE_NWFPE
17691da177e4SLinus Torvalds	bool "NWFPE math emulation"
17708993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
17711da177e4SLinus Torvalds	---help---
17721da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
17731da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
17741da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
17751da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
17761da177e4SLinus Torvalds
17771da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
17781da177e4SLinus Torvalds	  early in the bootup.
17791da177e4SLinus Torvalds
17801da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
17811da177e4SLinus Torvalds	bool "Support extended precision"
1782bedf142bSLennert Buytenhek	depends on FPE_NWFPE
17831da177e4SLinus Torvalds	help
17841da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
17851da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
17861da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
17871da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
17881da177e4SLinus Torvalds	  floating point emulator without any good reason.
17891da177e4SLinus Torvalds
17901da177e4SLinus Torvalds	  You almost surely want to say N here.
17911da177e4SLinus Torvalds
17921da177e4SLinus Torvaldsconfig FPE_FASTFPE
17931da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
17948993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
17951da177e4SLinus Torvalds	---help---
17961da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
17971da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
17981da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
17991da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
18001da177e4SLinus Torvalds
18011da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
18021da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
18031da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
18041da177e4SLinus Torvalds	  choose NWFPE.
18051da177e4SLinus Torvalds
18061da177e4SLinus Torvaldsconfig VFP
18071da177e4SLinus Torvalds	bool "VFP-format floating point maths"
1808c00d4ffdSRussell King	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
18091da177e4SLinus Torvalds	help
18101da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
18111da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
18121da177e4SLinus Torvalds
18131da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
18141da177e4SLinus Torvalds	  release notes and additional status information.
18151da177e4SLinus Torvalds
18161da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
18171da177e4SLinus Torvalds
181825ebee02SCatalin Marinasconfig VFPv3
181925ebee02SCatalin Marinas	bool
182025ebee02SCatalin Marinas	depends on VFP
182125ebee02SCatalin Marinas	default y if CPU_V7
182225ebee02SCatalin Marinas
1823b5872db4SCatalin Marinasconfig NEON
1824b5872db4SCatalin Marinas	bool "Advanced SIMD (NEON) Extension support"
1825b5872db4SCatalin Marinas	depends on VFPv3 && CPU_V7
1826b5872db4SCatalin Marinas	help
1827b5872db4SCatalin Marinas	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1828b5872db4SCatalin Marinas	  Extension.
1829b5872db4SCatalin Marinas
18301da177e4SLinus Torvaldsendmenu
18311da177e4SLinus Torvalds
18321da177e4SLinus Torvaldsmenu "Userspace binary formats"
18331da177e4SLinus Torvalds
18341da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
18351da177e4SLinus Torvalds
18361da177e4SLinus Torvaldsconfig ARTHUR
18371da177e4SLinus Torvalds	tristate "RISC OS personality"
1838704bdda0SNicolas Pitre	depends on !AEABI
18391da177e4SLinus Torvalds	help
18401da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
18411da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
18421da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
18431da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
18441da177e4SLinus Torvalds	  will be called arthur).
18451da177e4SLinus Torvalds
18461da177e4SLinus Torvaldsendmenu
18471da177e4SLinus Torvalds
18481da177e4SLinus Torvaldsmenu "Power management options"
18491da177e4SLinus Torvalds
1850eceab4acSRussell Kingsource "kernel/power/Kconfig"
18511da177e4SLinus Torvalds
1852f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE
1853f4cb5700SJohannes Berg	def_bool y
1854f4cb5700SJohannes Berg
18551da177e4SLinus Torvaldsendmenu
18561da177e4SLinus Torvalds
1857d5950b43SSam Ravnborgsource "net/Kconfig"
1858d5950b43SSam Ravnborg
1859ac25150fSUwe Kleine-Königsource "drivers/Kconfig"
18601da177e4SLinus Torvalds
18611da177e4SLinus Torvaldssource "fs/Kconfig"
18621da177e4SLinus Torvalds
18631da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
18641da177e4SLinus Torvalds
18651da177e4SLinus Torvaldssource "security/Kconfig"
18661da177e4SLinus Torvalds
18671da177e4SLinus Torvaldssource "crypto/Kconfig"
18681da177e4SLinus Torvalds
18691da177e4SLinus Torvaldssource "lib/Kconfig"
1870