xref: /linux/arch/arm/Kconfig (revision 3cb5ee496ae99ee89e378d628b19cb5a904b1397)
11da177e4SLinus Torvaldsconfig ARM
21da177e4SLinus Torvalds	bool
31da177e4SLinus Torvalds	default y
4e17c6d56SDavid Woodhouse	select HAVE_AOUT
524056f52SRussell King	select HAVE_DMA_API_DEBUG
62064c946SAdrian Bunk	select HAVE_IDE
72778f620SRussell King	select HAVE_MEMBLOCK
812b824fbSAlessandro Zummo	select RTC_LIB
975e7153aSRalf Baechle	select SYS_SUPPORTS_APM_EMULATION
10d4c7b1f9SWill Deacon	select GENERIC_ATOMIC64 if (!CPU_32v6K || !AEABI)
11fe166148SWill Deacon	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
125cbad0ebSJason Wessel	select HAVE_ARCH_KGDB
13ed7c84d5SDave Martin	select HAVE_KPROBES if (!XIP_KERNEL && !THUMB2_KERNEL)
149edddaa2SAnanth N Mavinakayanahalli	select HAVE_KRETPROBES if (HAVE_KPROBES)
15606576ceSSteven Rostedt	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
1680be7a7fSRabin Vincent	select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
1780be7a7fSRabin Vincent	select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL)
180e341af8SRabin Vincent	select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
191fe53268SDmitry Baryshkov	select HAVE_GENERIC_DMA_COHERENT
20e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_GZIP
21e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_LZO
226e8699f7SAlbin Tonnerre	select HAVE_KERNEL_LZMA
23e360adbeSPeter Zijlstra	select HAVE_IRQ_WORK
247ada189fSJamie Iles	select HAVE_PERF_EVENTS
257ada189fSJamie Iles	select PERF_USE_VMALLOC
26e513f8bfSWill Deacon	select HAVE_REGS_AND_STACK_ACCESS_API
2719852e59SWill Deacon	select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V7))
28ed60453fSRabin Vincent	select HAVE_C_RECORDMCOUNT
29e2a93eccSLennert Buytenhek	select HAVE_GENERIC_HARDIRQS
30e2a93eccSLennert Buytenhek	select HAVE_SPARSE_IRQ
311da177e4SLinus Torvalds	help
321da177e4SLinus Torvalds	  The ARM series is a line of low-power-consumption RISC chip designs
33f6c8965aSMartin Michlmayr	  licensed by ARM Ltd and targeted at embedded applications and
341da177e4SLinus Torvalds	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
351da177e4SLinus Torvalds	  manufactured, but legacy ARM-based PC hardware remains popular in
361da177e4SLinus Torvalds	  Europe.  There is an ARM Linux project with a web page at
371da177e4SLinus Torvalds	  <http://www.arm.linux.org.uk/>.
381da177e4SLinus Torvalds
391a189b97SRussell Kingconfig HAVE_PWM
401a189b97SRussell King	bool
411a189b97SRussell King
420b05da72SHans Ulli Krollconfig MIGHT_HAVE_PCI
430b05da72SHans Ulli Kroll	bool
440b05da72SHans Ulli Kroll
4575e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION
4675e7153aSRalf Baechle	bool
4775e7153aSRalf Baechle
48112f38a4SRussell Kingconfig HAVE_SCHED_CLOCK
49112f38a4SRussell King	bool
50112f38a4SRussell King
510a938b97SDavid Brownellconfig GENERIC_GPIO
520a938b97SDavid Brownell	bool
530a938b97SDavid Brownell
545cfc8ee0SJohn Stultzconfig ARCH_USES_GETTIMEOFFSET
555cfc8ee0SJohn Stultz	bool
565cfc8ee0SJohn Stultz	default n
57746140c7SKevin Hilman
580567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS
590567a0c0SKevin Hilman	bool
600567a0c0SKevin Hilman
61a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST
62a8655e83SCatalin Marinas	bool
63a8655e83SCatalin Marinas	depends on GENERIC_CLOCKEVENTS
645388a6b2SRussell King	default y if SMP
65a8655e83SCatalin Marinas
66bc581770SLinus Walleijconfig HAVE_TCM
67bc581770SLinus Walleij	bool
68bc581770SLinus Walleij	select GENERIC_ALLOCATOR
69bc581770SLinus Walleij
70e119bfffSRussell Kingconfig HAVE_PROC_CPU
71e119bfffSRussell King	bool
72e119bfffSRussell King
735ea81769SAl Viroconfig NO_IOPORT
745ea81769SAl Viro	bool
755ea81769SAl Viro
761da177e4SLinus Torvaldsconfig EISA
771da177e4SLinus Torvalds	bool
781da177e4SLinus Torvalds	---help---
791da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
801da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
811da177e4SLinus Torvalds
821da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
831da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
841da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
851da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
861da177e4SLinus Torvalds
871da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
881da177e4SLinus Torvalds
891da177e4SLinus Torvalds	  Otherwise, say N.
901da177e4SLinus Torvalds
911da177e4SLinus Torvaldsconfig SBUS
921da177e4SLinus Torvalds	bool
931da177e4SLinus Torvalds
941da177e4SLinus Torvaldsconfig MCA
951da177e4SLinus Torvalds	bool
961da177e4SLinus Torvalds	help
971da177e4SLinus Torvalds	  MicroChannel Architecture is found in some IBM PS/2 machines and
981da177e4SLinus Torvalds	  laptops.  It is a bus system similar to PCI or ISA. See
991da177e4SLinus Torvalds	  <file:Documentation/mca.txt> (and especially the web page given
1001da177e4SLinus Torvalds	  there) before attempting to build an MCA bus kernel.
1011da177e4SLinus Torvalds
102f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT
103f16fb1ecSRussell King	bool
104f16fb1ecSRussell King	default y
105f16fb1ecSRussell King
106f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT
107f76e9154SNicolas Pitre	bool
108f76e9154SNicolas Pitre	depends on !SMP
109f76e9154SNicolas Pitre	default y
110f76e9154SNicolas Pitre
111f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT
112f16fb1ecSRussell King	bool
113f16fb1ecSRussell King	default y
114f16fb1ecSRussell King
1157ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT
1167ad1bcb2SRussell King	bool
1177ad1bcb2SRussell King	default y
1187ad1bcb2SRussell King
1194a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND
1204a2581a0SThomas Gleixner	bool
1214a2581a0SThomas Gleixner	default y
1224a2581a0SThomas Gleixner
1234a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE
1244a2581a0SThomas Gleixner	bool
1254a2581a0SThomas Gleixner	default y
1264a2581a0SThomas Gleixner
12795c354feSNick Pigginconfig GENERIC_LOCKBREAK
12895c354feSNick Piggin	bool
12995c354feSNick Piggin	default y
13095c354feSNick Piggin	depends on SMP && PREEMPT
13195c354feSNick Piggin
1321da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK
1331da177e4SLinus Torvalds	bool
1341da177e4SLinus Torvalds	default y
1351da177e4SLinus Torvalds
1361da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
1371da177e4SLinus Torvalds	bool
1381da177e4SLinus Torvalds
139f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32
140f0d1b0b3SDavid Howells	bool
141f0d1b0b3SDavid Howells
142f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64
143f0d1b0b3SDavid Howells	bool
144f0d1b0b3SDavid Howells
14589c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ
14689c52ed4SBen Dooks	bool
14789c52ed4SBen Dooks	help
14889c52ed4SBen Dooks	  Internal node to signify that the ARCH has CPUFREQ support
14989c52ed4SBen Dooks	  and that the relevant menu configurations are displayed for
15089c52ed4SBen Dooks	  it.
15189c52ed4SBen Dooks
152c7b0aff4SKevin Hilmanconfig ARCH_HAS_CPU_IDLE_WAIT
153c7b0aff4SKevin Hilman       def_bool y
154c7b0aff4SKevin Hilman
155b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
156b89c3b16SAkinobu Mita	bool
157b89c3b16SAkinobu Mita	default y
158b89c3b16SAkinobu Mita
1591da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
1601da177e4SLinus Torvalds	bool
1611da177e4SLinus Torvalds	default y
1621da177e4SLinus Torvalds
163a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
164a08b6b79Sviro@ZenIV.linux.org.uk	bool
165a08b6b79Sviro@ZenIV.linux.org.uk
1665ac6da66SChristoph Lameterconfig ZONE_DMA
1675ac6da66SChristoph Lameter	bool
1685ac6da66SChristoph Lameter
169ccd7ab7fSFUJITA Tomonoriconfig NEED_DMA_MAP_STATE
170ccd7ab7fSFUJITA Tomonori       def_bool y
171ccd7ab7fSFUJITA Tomonori
1721da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
1731da177e4SLinus Torvalds	bool
1741da177e4SLinus Torvalds
1751da177e4SLinus Torvaldsconfig FIQ
1761da177e4SLinus Torvalds	bool
1771da177e4SLinus Torvalds
178034d2f5aSAl Viroconfig ARCH_MTD_XIP
179034d2f5aSAl Viro	bool
180034d2f5aSAl Viro
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
2286d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
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
2386d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
2391da0c89cSRussell King	select HAVE_SCHED_CLOCK
240c5a0adb5SRussell King	select ICST
241ae30ceacSCatalin Marinas	select GENERIC_CLOCKEVENTS
242eb7fffa3SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
243f4b8b319SRussell King	select PLAT_VERSATILE
244*3cb5ee49SRussell King	select PLAT_VERSATILE_CLCD
245e3887714SRussell King	select ARM_TIMER_SP804
246b56ba8aaSColin Tuckley	select GPIO_PL061 if GPIOLIB
2474af6fee1SDeepak Saxena	help
2484af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
2494af6fee1SDeepak Saxena
2504af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
2514af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
2524af6fee1SDeepak Saxena	select ARM_AMBA
2534af6fee1SDeepak Saxena	select ARM_VIC
2546d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
2551da0c89cSRussell King	select HAVE_SCHED_CLOCK
256c5a0adb5SRussell King	select ICST
25789df1272SKevin Hilman	select GENERIC_CLOCKEVENTS
258bbeddc43SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
259f4b8b319SRussell King	select PLAT_VERSATILE
2603414ba8cSRussell King	select PLAT_VERSATILE_CLCD
261e3887714SRussell King	select ARM_TIMER_SP804
2624af6fee1SDeepak Saxena	help
2634af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
2644af6fee1SDeepak Saxena
265ceade897SRussell Kingconfig ARCH_VEXPRESS
266ceade897SRussell King	bool "ARM Ltd. Versatile Express family"
267ceade897SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
268ceade897SRussell King	select ARM_AMBA
269ceade897SRussell King	select ARM_TIMER_SP804
2706d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
271ceade897SRussell King	select GENERIC_CLOCKEVENTS
272ceade897SRussell King	select HAVE_CLK
2730af85ddaSRussell King	select HAVE_SCHED_CLOCK
27495c34f83SNick Bowler	select HAVE_PATA_PLATFORM
275ceade897SRussell King	select ICST
276ceade897SRussell King	select PLAT_VERSATILE
277ceade897SRussell King	help
278ceade897SRussell King	  This enables support for the ARM Ltd Versatile Express boards.
279ceade897SRussell King
2808fc5ffa0SAndrew Victorconfig ARCH_AT91
2818fc5ffa0SAndrew Victor	bool "Atmel AT91"
282f373e8c0SRyan Mallon	select ARCH_REQUIRE_GPIOLIB
28393686ae8SDavid Brownell	select HAVE_CLK
2844af6fee1SDeepak Saxena	help
2852b3b3516SAndrew Victor	  This enables support for systems based on the Atmel AT91RM9200,
2862b3b3516SAndrew Victor	  AT91SAM9 and AT91CAP9 processors.
2874af6fee1SDeepak Saxena
288ccf50e23SRussell Kingconfig ARCH_BCMRING
289ccf50e23SRussell King	bool "Broadcom BCMRING"
290ccf50e23SRussell King	depends on MMU
291ccf50e23SRussell King	select CPU_V6
292ccf50e23SRussell King	select ARM_AMBA
2936d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
294ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
295ccf50e23SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
296ccf50e23SRussell King	help
297ccf50e23SRussell King	  Support for Broadcom's BCMRing platform.
298ccf50e23SRussell King
2991da177e4SLinus Torvaldsconfig ARCH_CLPS711X
3004af6fee1SDeepak Saxena	bool "Cirrus Logic CLPS711x/EP721x-based"
301c750815eSRussell King	select CPU_ARM720T
3025cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
303f999b8bdSMartin Michlmayr	help
304f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
3051da177e4SLinus Torvalds
306d94f944eSAnton Vorontsovconfig ARCH_CNS3XXX
307d94f944eSAnton Vorontsov	bool "Cavium Networks CNS3XXX family"
308d94f944eSAnton Vorontsov	select CPU_V6
309d94f944eSAnton Vorontsov	select GENERIC_CLOCKEVENTS
310d94f944eSAnton Vorontsov	select ARM_GIC
3110b05da72SHans Ulli Kroll	select MIGHT_HAVE_PCI
3125f32f7a0SAnton Vorontsov	select PCI_DOMAINS if PCI
313d94f944eSAnton Vorontsov	help
314d94f944eSAnton Vorontsov	  Support for Cavium Networks CNS3XXX platform.
315d94f944eSAnton Vorontsov
316788c9700SRussell Kingconfig ARCH_GEMINI
317788c9700SRussell King	bool "Cortina Systems Gemini"
318788c9700SRussell King	select CPU_FA526
319788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
3205cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
321788c9700SRussell King	help
322788c9700SRussell King	  Support for the Cortina Systems Gemini family SoCs
323788c9700SRussell King
3241da177e4SLinus Torvaldsconfig ARCH_EBSA110
3251da177e4SLinus Torvalds	bool "EBSA-110"
326c750815eSRussell King	select CPU_SA110
327f7e68bbfSRussell King	select ISA
328c5eb2a2bSRussell King	select NO_IOPORT
3295cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
3301da177e4SLinus Torvalds	help
3311da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
332f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
3331da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
3341da177e4SLinus Torvalds	  parallel port.
3351da177e4SLinus Torvalds
336e7736d47SLennert Buytenhekconfig ARCH_EP93XX
337e7736d47SLennert Buytenhek	bool "EP93xx-based"
338c750815eSRussell King	select CPU_ARM920T
339e7736d47SLennert Buytenhek	select ARM_AMBA
340e7736d47SLennert Buytenhek	select ARM_VIC
3416d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
3427444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
343eb33575cSMel Gorman	select ARCH_HAS_HOLES_MEMORYMODEL
3445cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
345e7736d47SLennert Buytenhek	help
346e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
347e7736d47SLennert Buytenhek
3481da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
3491da177e4SLinus Torvalds	bool "FootBridge"
350c750815eSRussell King	select CPU_SA110
3511da177e4SLinus Torvalds	select FOOTBRIDGE
3525cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
353f999b8bdSMartin Michlmayr	help
354f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
355f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
3561da177e4SLinus Torvalds
357788c9700SRussell Kingconfig ARCH_MXC
358788c9700SRussell King	bool "Freescale MXC/iMX-based"
359788c9700SRussell King	select GENERIC_CLOCKEVENTS
360788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
3616d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
362788c9700SRussell King	help
363788c9700SRussell King	  Support for Freescale MXC/iMX-based family of processors
364788c9700SRussell King
3651d3f33d5SShawn Guoconfig ARCH_MXS
3661d3f33d5SShawn Guo	bool "Freescale MXS-based"
3671d3f33d5SShawn Guo	select GENERIC_CLOCKEVENTS
3681d3f33d5SShawn Guo	select ARCH_REQUIRE_GPIOLIB
369b9214b97SSascha Hauer	select CLKDEV_LOOKUP
3701d3f33d5SShawn Guo	help
3711d3f33d5SShawn Guo	  Support for Freescale MXS-based family of processors
3721d3f33d5SShawn Guo
3737bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX
3747bd0f2f5Sdmitry pervushin	bool "Freescale STMP3xxx"
3757bd0f2f5Sdmitry pervushin	select CPU_ARM926T
3766d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
3777bd0f2f5Sdmitry pervushin	select ARCH_REQUIRE_GPIOLIB
3787bd0f2f5Sdmitry pervushin	select GENERIC_CLOCKEVENTS
3797bd0f2f5Sdmitry pervushin	select USB_ARCH_HAS_EHCI
3807bd0f2f5Sdmitry pervushin	help
3817bd0f2f5Sdmitry pervushin	  Support for systems based on the Freescale 3xxx CPUs.
3827bd0f2f5Sdmitry pervushin
3834af6fee1SDeepak Saxenaconfig ARCH_NETX
3844af6fee1SDeepak Saxena	bool "Hilscher NetX based"
385c750815eSRussell King	select CPU_ARM926T
3864af6fee1SDeepak Saxena	select ARM_VIC
3872fcfe6b8SUwe Kleine-König	select GENERIC_CLOCKEVENTS
388f999b8bdSMartin Michlmayr	help
3894af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
3904af6fee1SDeepak Saxena
3914af6fee1SDeepak Saxenaconfig ARCH_H720X
3924af6fee1SDeepak Saxena	bool "Hynix HMS720x-based"
393c750815eSRussell King	select CPU_ARM720T
3944af6fee1SDeepak Saxena	select ISA_DMA_API
3955cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
3964af6fee1SDeepak Saxena	help
3974af6fee1SDeepak Saxena	  This enables support for systems based on the Hynix HMS720x
3984af6fee1SDeepak Saxena
3993b938be6SRussell Kingconfig ARCH_IOP13XX
4003b938be6SRussell King	bool "IOP13xx-based"
4013b938be6SRussell King	depends on MMU
402c750815eSRussell King	select CPU_XSC3
4033b938be6SRussell King	select PLAT_IOP
4043b938be6SRussell King	select PCI
4053b938be6SRussell King	select ARCH_SUPPORTS_MSI
4068d5796d2SLennert Buytenhek	select VMSPLIT_1G
4073b938be6SRussell King	help
4083b938be6SRussell King	  Support for Intel's IOP13XX (XScale) family of processors.
4093b938be6SRussell King
4103f7e5815SLennert Buytenhekconfig ARCH_IOP32X
4113f7e5815SLennert Buytenhek	bool "IOP32x-based"
412a4f7e763SRussell King	depends on MMU
413c750815eSRussell King	select CPU_XSCALE
4147ae1f7ecSLennert Buytenhek	select PLAT_IOP
415f7e68bbfSRussell King	select PCI
416bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
417f999b8bdSMartin Michlmayr	help
4183f7e5815SLennert Buytenhek	  Support for Intel's 80219 and IOP32X (XScale) family of
4193f7e5815SLennert Buytenhek	  processors.
4203f7e5815SLennert Buytenhek
4213f7e5815SLennert Buytenhekconfig ARCH_IOP33X
4223f7e5815SLennert Buytenhek	bool "IOP33x-based"
4233f7e5815SLennert Buytenhek	depends on MMU
424c750815eSRussell King	select CPU_XSCALE
4257ae1f7ecSLennert Buytenhek	select PLAT_IOP
4263f7e5815SLennert Buytenhek	select PCI
427bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
4283f7e5815SLennert Buytenhek	help
4293f7e5815SLennert Buytenhek	  Support for Intel's IOP33X (XScale) family of processors.
4301da177e4SLinus Torvalds
4313b938be6SRussell Kingconfig ARCH_IXP23XX
4323b938be6SRussell King 	bool "IXP23XX-based"
433588ef769SDan Williams	depends on MMU
434c750815eSRussell King	select CPU_XSC3
435285f5fa7SDan Williams 	select PCI
4365cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
437285f5fa7SDan Williams	help
4383b938be6SRussell King	  Support for Intel's IXP23xx (XScale) family of processors.
4391da177e4SLinus Torvalds
4401da177e4SLinus Torvaldsconfig ARCH_IXP2000
4411da177e4SLinus Torvalds	bool "IXP2400/2800-based"
442a4f7e763SRussell King	depends on MMU
443c750815eSRussell King	select CPU_XSCALE
444f7e68bbfSRussell King	select PCI
4455cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
446f999b8bdSMartin Michlmayr	help
447f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
4481da177e4SLinus Torvalds
4493b938be6SRussell Kingconfig ARCH_IXP4XX
4503b938be6SRussell King	bool "IXP4xx-based"
451a4f7e763SRussell King	depends on MMU
452c750815eSRussell King	select CPU_XSCALE
4538858e9afSMilan Svoboda	select GENERIC_GPIO
4543b938be6SRussell King	select GENERIC_CLOCKEVENTS
4555b0d495cSRussell King	select HAVE_SCHED_CLOCK
4560b05da72SHans Ulli Kroll	select MIGHT_HAVE_PCI
457485bdde7SRussell King	select DMABOUNCE if PCI
458c4713074SLennert Buytenhek	help
4593b938be6SRussell King	  Support for Intel's IXP4XX (XScale) family of processors.
460c4713074SLennert Buytenhek
461edabd38eSSaeed Bisharaconfig ARCH_DOVE
462edabd38eSSaeed Bishara	bool "Marvell Dove"
463edabd38eSSaeed Bishara	select PCI
464edabd38eSSaeed Bishara	select ARCH_REQUIRE_GPIOLIB
465edabd38eSSaeed Bishara	select GENERIC_CLOCKEVENTS
466edabd38eSSaeed Bishara	select PLAT_ORION
467edabd38eSSaeed Bishara	help
468edabd38eSSaeed Bishara	  Support for the Marvell Dove SoC 88AP510
469edabd38eSSaeed Bishara
470651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD
471651c74c7SSaeed Bishara	bool "Marvell Kirkwood"
472c750815eSRussell King	select CPU_FEROCEON
473651c74c7SSaeed Bishara	select PCI
474a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
475651c74c7SSaeed Bishara	select GENERIC_CLOCKEVENTS
476651c74c7SSaeed Bishara	select PLAT_ORION
477651c74c7SSaeed Bishara	help
478651c74c7SSaeed Bishara	  Support for the following Marvell Kirkwood series SoCs:
479651c74c7SSaeed Bishara	  88F6180, 88F6192 and 88F6281.
480651c74c7SSaeed Bishara
481788c9700SRussell Kingconfig ARCH_LOKI
482788c9700SRussell King	bool "Marvell Loki (88RC8480)"
483788c9700SRussell King	select CPU_FEROCEON
484788c9700SRussell King	select GENERIC_CLOCKEVENTS
485788c9700SRussell King	select PLAT_ORION
486788c9700SRussell King	help
487788c9700SRussell King	  Support for the Marvell Loki (88RC8480) SoC.
488788c9700SRussell King
48940805949SKevin Wellsconfig ARCH_LPC32XX
49040805949SKevin Wells	bool "NXP LPC32XX"
49140805949SKevin Wells	select CPU_ARM926T
49240805949SKevin Wells	select ARCH_REQUIRE_GPIOLIB
49340805949SKevin Wells	select HAVE_IDE
49440805949SKevin Wells	select ARM_AMBA
49540805949SKevin Wells	select USB_ARCH_HAS_OHCI
4966d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
49740805949SKevin Wells	select GENERIC_TIME
49840805949SKevin Wells	select GENERIC_CLOCKEVENTS
49940805949SKevin Wells	help
50040805949SKevin Wells	  Support for the NXP LPC32XX family of processors
50140805949SKevin Wells
502788c9700SRussell Kingconfig ARCH_MV78XX0
503788c9700SRussell King	bool "Marvell MV78xx0"
504788c9700SRussell King	select CPU_FEROCEON
505788c9700SRussell King	select PCI
506a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
507788c9700SRussell King	select GENERIC_CLOCKEVENTS
508788c9700SRussell King	select PLAT_ORION
509788c9700SRussell King	help
510788c9700SRussell King	  Support for the following Marvell MV78xx0 series SoCs:
511788c9700SRussell King	  MV781x0, MV782x0.
512788c9700SRussell King
513788c9700SRussell Kingconfig ARCH_ORION5X
514788c9700SRussell King	bool "Marvell Orion"
515788c9700SRussell King	depends on MMU
516788c9700SRussell King	select CPU_FEROCEON
517788c9700SRussell King	select PCI
518a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
519788c9700SRussell King	select GENERIC_CLOCKEVENTS
520788c9700SRussell King	select PLAT_ORION
521788c9700SRussell King	help
522788c9700SRussell King	  Support for the following Marvell Orion 5x series SoCs:
523788c9700SRussell King	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
524788c9700SRussell King	  Orion-2 (5281), Orion-1-90 (6183).
525788c9700SRussell King
526788c9700SRussell Kingconfig ARCH_MMP
5272f7e8faeSHaojian Zhuang	bool "Marvell PXA168/910/MMP2"
528788c9700SRussell King	depends on MMU
529788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
5306d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
531788c9700SRussell King	select GENERIC_CLOCKEVENTS
53228bb7bc6SRussell King	select HAVE_SCHED_CLOCK
533788c9700SRussell King	select TICK_ONESHOT
534788c9700SRussell King	select PLAT_PXA
5350bd86961SHaojian Zhuang	select SPARSE_IRQ
536788c9700SRussell King	help
5372f7e8faeSHaojian Zhuang	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
538788c9700SRussell King
539c53c9cf6SAndrew Victorconfig ARCH_KS8695
540c53c9cf6SAndrew Victor	bool "Micrel/Kendin KS8695"
541c750815eSRussell King	select CPU_ARM922T
54272880ad8SDaniel Silverstone	select ARCH_REQUIRE_GPIOLIB
5435cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
544c53c9cf6SAndrew Victor	help
545c53c9cf6SAndrew Victor	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
546c53c9cf6SAndrew Victor	  System-on-Chip devices.
547c53c9cf6SAndrew Victor
5489918cda5SUwe Kleine-Königconfig ARCH_NS9XXX
5499918cda5SUwe Kleine-König	bool "NetSilicon NS9xxx"
550c750815eSRussell King	select CPU_ARM926T
551689f2a01SUwe Kleine-König	select GENERIC_GPIO
552c0bb87f7SUwe Kleine-König	select GENERIC_CLOCKEVENTS
5539483a578SDavid Brownell	select HAVE_CLK
5549918cda5SUwe Kleine-König	help
5559918cda5SUwe Kleine-König	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
5569918cda5SUwe Kleine-König	  System.
5579918cda5SUwe Kleine-König
5589918cda5SUwe Kleine-König	  <http://www.digi.com/products/microprocessors/index.jsp>
5599918cda5SUwe Kleine-König
560788c9700SRussell Kingconfig ARCH_W90X900
561788c9700SRussell King	bool "Nuvoton W90X900 CPU"
562788c9700SRussell King	select CPU_ARM926T
563c52d3d68Swanzongshun	select ARCH_REQUIRE_GPIOLIB
5646d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
56558b5369eSwanzongshun	select GENERIC_CLOCKEVENTS
566777f9bebSLennert Buytenhek	help
567a8bc4eadSwanzongshun	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
568a8bc4eadSwanzongshun	  At present, the w90x900 has been renamed nuc900, regarding
569a8bc4eadSwanzongshun	  the ARM series product line, you can login the following
570a8bc4eadSwanzongshun	  link address to know more.
571a8bc4eadSwanzongshun
572a8bc4eadSwanzongshun	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
573a8bc4eadSwanzongshun		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
574585cf175STzachi Perelstein
575a62e9030Swanzongshunconfig ARCH_NUC93X
576a62e9030Swanzongshun	bool "Nuvoton NUC93X CPU"
577a62e9030Swanzongshun	select CPU_ARM926T
5786d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
579a62e9030Swanzongshun	help
580a62e9030Swanzongshun	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
581a62e9030Swanzongshun	  low-power and high performance MPEG-4/JPEG multimedia controller chip.
582a62e9030Swanzongshun
583c5f80065SErik Gillingconfig ARCH_TEGRA
584c5f80065SErik Gilling	bool "NVIDIA Tegra"
5854073723aSRussell King	select CLKDEV_LOOKUP
586c5f80065SErik Gilling	select GENERIC_TIME
587c5f80065SErik Gilling	select GENERIC_CLOCKEVENTS
588c5f80065SErik Gilling	select GENERIC_GPIO
589c5f80065SErik Gilling	select HAVE_CLK
590e3f4c0abSRussell King	select HAVE_SCHED_CLOCK
591c5f80065SErik Gilling	select ARCH_HAS_BARRIERS if CACHE_L2X0
5927056d423SColin Cross	select ARCH_HAS_CPUFREQ
593c5f80065SErik Gilling	help
594c5f80065SErik Gilling	  This enables support for NVIDIA Tegra based systems (Tegra APX,
595c5f80065SErik Gilling	  Tegra 6xx and Tegra 2 series).
596c5f80065SErik Gilling
5974af6fee1SDeepak Saxenaconfig ARCH_PNX4008
5984af6fee1SDeepak Saxena	bool "Philips Nexperia PNX4008 Mobile"
599c750815eSRussell King	select CPU_ARM926T
6006d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
6015cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
6024af6fee1SDeepak Saxena	help
6034af6fee1SDeepak Saxena	  This enables support for Philips PNX4008 mobile platform.
6044af6fee1SDeepak Saxena
6051da177e4SLinus Torvaldsconfig ARCH_PXA
6062c8086a5Seric miao	bool "PXA2xx/PXA3xx-based"
607a4f7e763SRussell King	depends on MMU
608034d2f5aSAl Viro	select ARCH_MTD_XIP
60989c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
6106d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
6117444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
612981d0f39SEric Miao	select GENERIC_CLOCKEVENTS
6137ce83018SRussell King	select HAVE_SCHED_CLOCK
614a88264c2SRussell King	select TICK_ONESHOT
615bd5ce433SEric Miao	select PLAT_PXA
6166ac6b817SHaojian Zhuang	select SPARSE_IRQ
617f999b8bdSMartin Michlmayr	help
6182c8086a5Seric miao	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
6191da177e4SLinus Torvalds
620788c9700SRussell Kingconfig ARCH_MSM
621788c9700SRussell King	bool "Qualcomm MSM"
6224b536b8dSSteve Muckle	select HAVE_CLK
62349cbe786SEric Miao	select GENERIC_CLOCKEVENTS
624923a081cSPavel Machek	select ARCH_REQUIRE_GPIOLIB
62549cbe786SEric Miao	help
6264b53eb4fSDaniel Walker	  Support for Qualcomm MSM/QSD based systems.  This runs on the
6274b53eb4fSDaniel Walker	  apps processor of the MSM/QSD and depends on a shared memory
6284b53eb4fSDaniel Walker	  interface to the modem processor which runs the baseband
6294b53eb4fSDaniel Walker	  stack and controls some vital subsystems
6304b53eb4fSDaniel Walker	  (clock and power control, etc).
63149cbe786SEric Miao
632c793c1b0SMagnus Dammconfig ARCH_SHMOBILE
6336d72ad35SPaul Mundt	bool "Renesas SH-Mobile / R-Mobile"
6346d72ad35SPaul Mundt	select HAVE_CLK
6355e93c6b4SPaul Mundt	select CLKDEV_LOOKUP
6366d72ad35SPaul Mundt	select GENERIC_CLOCKEVENTS
6376d72ad35SPaul Mundt	select NO_IOPORT
6386d72ad35SPaul Mundt	select SPARSE_IRQ
63960f1435cSMagnus Damm	select MULTI_IRQ_HANDLER
640c793c1b0SMagnus Damm	help
6416d72ad35SPaul Mundt	  Support for Renesas's SH-Mobile and R-Mobile ARM platforms.
642c793c1b0SMagnus Damm
6431da177e4SLinus Torvaldsconfig ARCH_RPC
6441da177e4SLinus Torvalds	bool "RiscPC"
6451da177e4SLinus Torvalds	select ARCH_ACORN
6461da177e4SLinus Torvalds	select FIQ
6471da177e4SLinus Torvalds	select TIMER_ACORN
648a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
649341eb781SBen Dooks	select HAVE_PATA_PLATFORM
650065909b9SRussell King	select ISA_DMA_API
6515ea81769SAl Viro	select NO_IOPORT
65207f841b7SRussell King	select ARCH_SPARSEMEM_ENABLE
6535cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
6541da177e4SLinus Torvalds	help
6551da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
6561da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
6571da177e4SLinus Torvalds
6581da177e4SLinus Torvaldsconfig ARCH_SA1100
6591da177e4SLinus Torvalds	bool "SA1100-based"
660c750815eSRussell King	select CPU_SA1100
661f7e68bbfSRussell King	select ISA
66205944d74SRussell King	select ARCH_SPARSEMEM_ENABLE
663034d2f5aSAl Viro	select ARCH_MTD_XIP
66489c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
6651937f5b9SRussell King	select CPU_FREQ
6663e238be2SRussell King	select GENERIC_CLOCKEVENTS
6679483a578SDavid Brownell	select HAVE_CLK
6685094b92fSRussell King	select HAVE_SCHED_CLOCK
6693e238be2SRussell King	select TICK_ONESHOT
6707444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
671f999b8bdSMartin Michlmayr	help
672f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
6731da177e4SLinus Torvalds
6741da177e4SLinus Torvaldsconfig ARCH_S3C2410
67563b1f51bSBen Dooks	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
6760a938b97SDavid Brownell	select GENERIC_GPIO
6779d56c02aSBen Dooks	select ARCH_HAS_CPUFREQ
6789483a578SDavid Brownell	select HAVE_CLK
6795cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
68020676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
6811da177e4SLinus Torvalds	help
6821da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
6831da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
684f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
6851da177e4SLinus Torvalds
68663b1f51bSBen Dooks	  Note, the S3C2416 and the S3C2450 are so close that they even share
68763b1f51bSBen Dooks	  the same SoC ID code. This means that there is no seperate machine
68863b1f51bSBen Dooks	  directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
68963b1f51bSBen Dooks
690a08ab637SBen Dooksconfig ARCH_S3C64XX
691a08ab637SBen Dooks	bool "Samsung S3C64XX"
69289f1fa08SBen Dooks	select PLAT_SAMSUNG
69389f0ce72SBen Dooks	select CPU_V6
69489f0ce72SBen Dooks	select ARM_VIC
695a08ab637SBen Dooks	select HAVE_CLK
69689f0ce72SBen Dooks	select NO_IOPORT
6975cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
69889c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
69989f0ce72SBen Dooks	select ARCH_REQUIRE_GPIOLIB
70089f0ce72SBen Dooks	select SAMSUNG_CLKSRC
70189f0ce72SBen Dooks	select SAMSUNG_IRQ_VIC_TIMER
70289f0ce72SBen Dooks	select SAMSUNG_IRQ_UART
70389f0ce72SBen Dooks	select S3C_GPIO_TRACK
70489f0ce72SBen Dooks	select S3C_GPIO_PULL_UPDOWN
70589f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C24XX
70689f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C64XX
70789f0ce72SBen Dooks	select S3C_DEV_NAND
70889f0ce72SBen Dooks	select USB_ARCH_HAS_OHCI
70989f0ce72SBen Dooks	select SAMSUNG_GPIOLIB_4BIT
71020676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
711c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
712a08ab637SBen Dooks	help
713a08ab637SBen Dooks	  Samsung S3C64XX series based systems
714a08ab637SBen Dooks
71549b7a491SKukjin Kimconfig ARCH_S5P64X0
71649b7a491SKukjin Kim	bool "Samsung S5P6440 S5P6450"
717c4ffccddSKukjin Kim	select CPU_V6
718c4ffccddSKukjin Kim	select GENERIC_GPIO
719c4ffccddSKukjin Kim	select HAVE_CLK
720c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
721925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
72220676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
723754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
724c4ffccddSKukjin Kim	help
72549b7a491SKukjin Kim	  Samsung S5P64X0 CPU based systems, such as the Samsung SMDK6440,
72649b7a491SKukjin Kim	  SMDK6450.
727c4ffccddSKukjin Kim
728550db7f1SKukjin Kimconfig ARCH_S5P6442
729550db7f1SKukjin Kim	bool "Samsung S5P6442"
730550db7f1SKukjin Kim	select CPU_V6
731550db7f1SKukjin Kim	select GENERIC_GPIO
732550db7f1SKukjin Kim	select HAVE_CLK
733925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
734c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
735550db7f1SKukjin Kim	help
736550db7f1SKukjin Kim	  Samsung S5P6442 CPU based systems
737550db7f1SKukjin Kim
738acc84707SMarek Szyprowskiconfig ARCH_S5PC100
739acc84707SMarek Szyprowski	bool "Samsung S5PC100"
7405a7652f2SByungho Min	select GENERIC_GPIO
7415a7652f2SByungho Min	select HAVE_CLK
7425a7652f2SByungho Min	select CPU_V7
743d6d502faSKukjin Kim	select ARM_L1_CACHE_SHIFT_6
744925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
74520676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
746754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
747c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
7485a7652f2SByungho Min	help
749acc84707SMarek Szyprowski	  Samsung S5PC100 series based systems
7505a7652f2SByungho Min
751170f4e42SKukjin Kimconfig ARCH_S5PV210
752170f4e42SKukjin Kim	bool "Samsung S5PV210/S5PC110"
753170f4e42SKukjin Kim	select CPU_V7
754eecb6a84SKyungmin Park	select ARCH_SPARSEMEM_ENABLE
755170f4e42SKukjin Kim	select GENERIC_GPIO
756170f4e42SKukjin Kim	select HAVE_CLK
757170f4e42SKukjin Kim	select ARM_L1_CACHE_SHIFT_6
758d8144aeaSJaecheol Lee	select ARCH_HAS_CPUFREQ
759925c68cdSBen Dooks	select ARCH_USES_GETTIMEOFFSET
76020676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
761754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
762c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
763170f4e42SKukjin Kim	help
764170f4e42SKukjin Kim	  Samsung S5PV210/S5PC110 series based systems
765170f4e42SKukjin Kim
766cc0e72b8SChanghwan Younconfig ARCH_S5PV310
767cc0e72b8SChanghwan Youn	bool "Samsung S5PV310/S5PC210"
768cc0e72b8SChanghwan Youn	select CPU_V7
769f567fa6fSKyungmin Park	select ARCH_SPARSEMEM_ENABLE
770cc0e72b8SChanghwan Youn	select GENERIC_GPIO
771cc0e72b8SChanghwan Youn	select HAVE_CLK
772b333fb16SSunyoung Kang	select ARCH_HAS_CPUFREQ
773cc0e72b8SChanghwan Youn	select GENERIC_CLOCKEVENTS
774754961a8SKukjin Kim	select HAVE_S3C_RTC if RTC_CLASS
77520676c15SKukjin Kim	select HAVE_S3C2410_I2C if I2C
776c39d8d55SKyungmin Park	select HAVE_S3C2410_WATCHDOG if WATCHDOG
777cc0e72b8SChanghwan Youn	help
778cc0e72b8SChanghwan Youn	  Samsung S5PV310 series based systems
779cc0e72b8SChanghwan Youn
7801da177e4SLinus Torvaldsconfig ARCH_SHARK
7811da177e4SLinus Torvalds	bool "Shark"
782c750815eSRussell King	select CPU_SA110
783f7e68bbfSRussell King	select ISA
784f7e68bbfSRussell King	select ISA_DMA
7853bca103aSNicolas Pitre	select ZONE_DMA
786f7e68bbfSRussell King	select PCI
7875cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
788f999b8bdSMartin Michlmayr	help
789f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
790f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
7911da177e4SLinus Torvalds
79283ef3338SHans J. Kochconfig ARCH_TCC_926
79383ef3338SHans J. Koch	bool "Telechips TCC ARM926-based systems"
79483ef3338SHans J. Koch	select CPU_ARM926T
79583ef3338SHans J. Koch	select HAVE_CLK
7966d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
79783ef3338SHans J. Koch	select GENERIC_CLOCKEVENTS
79883ef3338SHans J. Koch	help
79983ef3338SHans J. Koch	  Support for Telechips TCC ARM926-based systems.
80083ef3338SHans J. Koch
8011da177e4SLinus Torvaldsconfig ARCH_LH7A40X
8021da177e4SLinus Torvalds	bool "Sharp LH7A40X"
803c750815eSRussell King	select CPU_ARM922T
8044ba3f7c5SRussell King	select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
8055cfc8ee0SJohn Stultz	select ARCH_USES_GETTIMEOFFSET
8061da177e4SLinus Torvalds	help
8071da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
8081da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
8091da177e4SLinus Torvalds	  core with a wide array of integrated devices for
8101da177e4SLinus Torvalds	  hand-held and low-power applications.
8111da177e4SLinus Torvalds
812d98aac75SLinus Walleijconfig ARCH_U300
813d98aac75SLinus Walleij	bool "ST-Ericsson U300 Series"
814d98aac75SLinus Walleij	depends on MMU
815d98aac75SLinus Walleij	select CPU_ARM926T
8165c21b7caSRussell King	select HAVE_SCHED_CLOCK
817bc581770SLinus Walleij	select HAVE_TCM
818d98aac75SLinus Walleij	select ARM_AMBA
819d98aac75SLinus Walleij	select ARM_VIC
820d98aac75SLinus Walleij	select GENERIC_CLOCKEVENTS
8216d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
822d98aac75SLinus Walleij	select GENERIC_GPIO
823d98aac75SLinus Walleij	help
824d98aac75SLinus Walleij	  Support for ST-Ericsson U300 series mobile platforms.
825d98aac75SLinus Walleij
826ccf50e23SRussell Kingconfig ARCH_U8500
827ccf50e23SRussell King	bool "ST-Ericsson U8500 Series"
828ccf50e23SRussell King	select CPU_V7
829ccf50e23SRussell King	select ARM_AMBA
830ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
8316d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
83294bdc0e2SRabin Vincent	select ARCH_REQUIRE_GPIOLIB
8337c1a70e9SMartin Persson	select ARCH_HAS_CPUFREQ
834ccf50e23SRussell King	help
835ccf50e23SRussell King	  Support for ST-Ericsson's Ux500 architecture
836ccf50e23SRussell King
837ccf50e23SRussell Kingconfig ARCH_NOMADIK
838ccf50e23SRussell King	bool "STMicroelectronics Nomadik"
839ccf50e23SRussell King	select ARM_AMBA
840ccf50e23SRussell King	select ARM_VIC
841ccf50e23SRussell King	select CPU_ARM926T
8426d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
843ccf50e23SRussell King	select GENERIC_CLOCKEVENTS
844ccf50e23SRussell King	select ARCH_REQUIRE_GPIOLIB
845ccf50e23SRussell King	help
846ccf50e23SRussell King	  Support for the Nomadik platform by ST-Ericsson
847ccf50e23SRussell King
8487c6337e2SKevin Hilmanconfig ARCH_DAVINCI
8497c6337e2SKevin Hilman	bool "TI DaVinci"
8507c6337e2SKevin Hilman	select GENERIC_CLOCKEVENTS
851dce1115bSDavid Brownell	select ARCH_REQUIRE_GPIOLIB
8523bca103aSNicolas Pitre	select ZONE_DMA
8539232fcc9SKevin Hilman	select HAVE_IDE
8546d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
85520e9969bSDavid Brownell	select GENERIC_ALLOCATOR
856ae88e05aSSekhar Nori	select ARCH_HAS_HOLES_MEMORYMODEL
8577c6337e2SKevin Hilman	help
8587c6337e2SKevin Hilman	  Support for TI's DaVinci platform.
8597c6337e2SKevin Hilman
8603b938be6SRussell Kingconfig ARCH_OMAP
8613b938be6SRussell King	bool "TI OMAP"
8629483a578SDavid Brownell	select HAVE_CLK
8637444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
86489c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
86506cad098SKevin Hilman	select GENERIC_CLOCKEVENTS
866dc548fbbSRussell King	select HAVE_SCHED_CLOCK
8679af915daSSriram	select ARCH_HAS_HOLES_MEMORYMODEL
8683b938be6SRussell King	help
8696e457bb0SLennert Buytenhek	  Support for TI's OMAP platform (OMAP1/2/3/4).
8703b938be6SRussell King
871cee37e50Sviresh kumarconfig PLAT_SPEAR
872cee37e50Sviresh kumar	bool "ST SPEAr"
873cee37e50Sviresh kumar	select ARM_AMBA
874cee37e50Sviresh kumar	select ARCH_REQUIRE_GPIOLIB
8756d803ba7SJean-Christop PLAGNIOL-VILLARD	select CLKDEV_LOOKUP
876cee37e50Sviresh kumar	select GENERIC_CLOCKEVENTS
877cee37e50Sviresh kumar	select HAVE_CLK
878cee37e50Sviresh kumar	help
879cee37e50Sviresh kumar	  Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
880cee37e50Sviresh kumar
8811da177e4SLinus Torvaldsendchoice
8821da177e4SLinus Torvalds
883ccf50e23SRussell King#
884ccf50e23SRussell King# This is sorted alphabetically by mach-* pathname.  However, plat-*
885ccf50e23SRussell King# Kconfigs may be included either alphabetically (according to the
886ccf50e23SRussell King# plat- suffix) or along side the corresponding mach-* source.
887ccf50e23SRussell King#
88895b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig"
88995b8f20fSRussell King
89095b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig"
89195b8f20fSRussell King
89295b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig"
89395b8f20fSRussell King
8941da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
8951da177e4SLinus Torvalds
896d94f944eSAnton Vorontsovsource "arch/arm/mach-cns3xxx/Kconfig"
897d94f944eSAnton Vorontsov
89895b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig"
89995b8f20fSRussell King
90095b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig"
90195b8f20fSRussell King
902e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
903e7736d47SLennert Buytenhek
9041da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
9051da177e4SLinus Torvalds
90659d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig"
90759d3a193SPaulius Zaleckas
90895b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig"
90995b8f20fSRussell King
9101da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
9111da177e4SLinus Torvalds
9123f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig"
9133f7e5815SLennert Buytenhek
9143f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig"
9151da177e4SLinus Torvalds
916285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig"
917285f5fa7SDan Williams
9181da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
9191da177e4SLinus Torvalds
9201da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
9211da177e4SLinus Torvalds
922c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig"
923c4713074SLennert Buytenhek
92495b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig"
92595b8f20fSRussell King
92695b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig"
92795b8f20fSRussell King
92895b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig"
92995b8f20fSRussell King
930777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig"
931777f9bebSLennert Buytenhek
93240805949SKevin Wellssource "arch/arm/mach-lpc32xx/Kconfig"
93340805949SKevin Wells
93495b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig"
93595b8f20fSRussell King
936794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig"
937794d15b2SStanislav Samsonov
93895b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig"
9391da177e4SLinus Torvalds
9401d3f33d5SShawn Guosource "arch/arm/mach-mxs/Kconfig"
9411d3f33d5SShawn Guo
94295b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig"
94349cbe786SEric Miao
94495b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig"
94595b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig"
94695b8f20fSRussell King
94795b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig"
9481da177e4SLinus Torvalds
949d91a8910SRussell Kingsource "arch/arm/mach-nuc93x/Kconfig"
950d91a8910SRussell King
951d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
952d48af15eSTony Lindgren
953d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
9541da177e4SLinus Torvalds
9551dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
9561dbae815STony Lindgren
9579dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig"
958585cf175STzachi Perelstein
95995b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig"
96095b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig"
9611da177e4SLinus Torvalds
96295b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig"
96395b8f20fSRussell King
96495b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig"
96595b8f20fSRussell King
96695b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig"
967edabd38eSSaeed Bishara
968cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig"
969a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig"
970c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig"
971a21765a7SBen Dooks
972cee37e50Sviresh kumarsource "arch/arm/plat-spear/Kconfig"
973a21765a7SBen Dooks
97483ef3338SHans J. Kochsource "arch/arm/plat-tcc/Kconfig"
97583ef3338SHans J. Koch
976a21765a7SBen Dooksif ARCH_S3C2410
977a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig"
9781da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
979a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig"
980f1290a49SYauhen Kharuzhysource "arch/arm/mach-s3c2416/Kconfig"
981a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig"
982e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig"
983a21765a7SBen Dooksendif
9841da177e4SLinus Torvalds
985a08ab637SBen Dooksif ARCH_S3C64XX
986431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig"
987a08ab637SBen Dooksendif
988a08ab637SBen Dooks
98949b7a491SKukjin Kimsource "arch/arm/mach-s5p64x0/Kconfig"
990c4ffccddSKukjin Kim
991550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig"
9927bd0f2f5Sdmitry pervushin
9935a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig"
9945a7652f2SByungho Min
995170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig"
996170f4e42SKukjin Kim
997cc0e72b8SChanghwan Younsource "arch/arm/mach-s5pv310/Kconfig"
998cc0e72b8SChanghwan Youn
999882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig"
10001da177e4SLinus Torvalds
1001882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig"
10029e73c84cSBrian Swetland
1003c5f80065SErik Gillingsource "arch/arm/mach-tegra/Kconfig"
1004c5f80065SErik Gilling
100595b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig"
100652c543f9SQuinn Jensen
100795b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig"
10081da177e4SLinus Torvalds
10091da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
10101da177e4SLinus Torvalds
1011ceade897SRussell Kingsource "arch/arm/mach-vexpress/Kconfig"
1012420c34e4SRussell Kingsource "arch/arm/plat-versatile/Kconfig"
1013ceade897SRussell King
10147ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig"
10157ec80ddfSwanzongshun
10161da177e4SLinus Torvalds# Definitions to make life easier
10171da177e4SLinus Torvaldsconfig ARCH_ACORN
10181da177e4SLinus Torvalds	bool
10191da177e4SLinus Torvalds
10207ae1f7ecSLennert Buytenhekconfig PLAT_IOP
10217ae1f7ecSLennert Buytenhek	bool
1022469d3044SMikael Pettersson	select GENERIC_CLOCKEVENTS
102308f26b1eSRussell King	select HAVE_SCHED_CLOCK
10247ae1f7ecSLennert Buytenhek
102569b02f6aSLennert Buytenhekconfig PLAT_ORION
102669b02f6aSLennert Buytenhek	bool
1027f06a1624SRussell King	select HAVE_SCHED_CLOCK
102869b02f6aSLennert Buytenhek
1029bd5ce433SEric Miaoconfig PLAT_PXA
1030bd5ce433SEric Miao	bool
1031bd5ce433SEric Miao
1032f4b8b319SRussell Kingconfig PLAT_VERSATILE
1033f4b8b319SRussell King	bool
1034f4b8b319SRussell King
1035e3887714SRussell Kingconfig ARM_TIMER_SP804
1036e3887714SRussell King	bool
1037e3887714SRussell King
10381da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
10391da177e4SLinus Torvalds
1040afe4b25eSLennert Buytenhekconfig IWMMXT
1041afe4b25eSLennert Buytenhek	bool "Enable iWMMXt support"
1042ef6c8445SHaojian Zhuang	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4
1043ef6c8445SHaojian Zhuang	default y if PXA27x || PXA3xx || PXA95x || ARCH_MMP
1044afe4b25eSLennert Buytenhek	help
1045afe4b25eSLennert Buytenhek	  Enable support for iWMMXt context switching at run time if
1046afe4b25eSLennert Buytenhek	  running on a CPU that supports it.
1047afe4b25eSLennert Buytenhek
10481da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
10491da177e4SLinus Torvaldsconfig XSCALE_PMU
10501da177e4SLinus Torvalds	bool
10511da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
10521da177e4SLinus Torvalds	default y
10531da177e4SLinus Torvalds
10540f4f0672SJamie Ilesconfig CPU_HAS_PMU
10558954bb0dSWill Deacon	depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
10568954bb0dSWill Deacon		   (!ARCH_OMAP3 || OMAP3_EMU)
10570f4f0672SJamie Iles	default y
10580f4f0672SJamie Iles	bool
10590f4f0672SJamie Iles
106052108641Seric miaoconfig MULTI_IRQ_HANDLER
106152108641Seric miao	bool
106252108641Seric miao	help
106352108641Seric miao	  Allow each machine to specify it's own IRQ handler at run time.
106452108641Seric miao
10653b93e7b0SHyok S. Choiif !MMU
10663b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
10673b93e7b0SHyok S. Choiendif
10683b93e7b0SHyok S. Choi
10699cba3cccSCatalin Marinasconfig ARM_ERRATA_411920
10709cba3cccSCatalin Marinas	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
107181d11955STony Lindgren	depends on CPU_V6
10729cba3cccSCatalin Marinas	help
10739cba3cccSCatalin Marinas	  Invalidation of the Instruction Cache operation can
10749cba3cccSCatalin Marinas	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
10759cba3cccSCatalin Marinas	  It does not affect the MPCore. This option enables the ARM Ltd.
10769cba3cccSCatalin Marinas	  recommended workaround.
10779cba3cccSCatalin Marinas
10787ce236fcSCatalin Marinasconfig ARM_ERRATA_430973
10797ce236fcSCatalin Marinas	bool "ARM errata: Stale prediction on replaced interworking branch"
10807ce236fcSCatalin Marinas	depends on CPU_V7
10817ce236fcSCatalin Marinas	help
10827ce236fcSCatalin Marinas	  This option enables the workaround for the 430973 Cortex-A8
10837ce236fcSCatalin Marinas	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
10847ce236fcSCatalin Marinas	  interworking branch is replaced with another code sequence at the
10857ce236fcSCatalin Marinas	  same virtual address, whether due to self-modifying code or virtual
10867ce236fcSCatalin Marinas	  to physical address re-mapping, Cortex-A8 does not recover from the
10877ce236fcSCatalin Marinas	  stale interworking branch prediction. This results in Cortex-A8
10887ce236fcSCatalin Marinas	  executing the new code sequence in the incorrect ARM or Thumb state.
10897ce236fcSCatalin Marinas	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
10907ce236fcSCatalin Marinas	  and also flushes the branch target cache at every context switch.
10917ce236fcSCatalin Marinas	  Note that setting specific bits in the ACTLR register may not be
10927ce236fcSCatalin Marinas	  available in non-secure mode.
10937ce236fcSCatalin Marinas
1094855c551fSCatalin Marinasconfig ARM_ERRATA_458693
1095855c551fSCatalin Marinas	bool "ARM errata: Processor deadlock when a false hazard is created"
1096855c551fSCatalin Marinas	depends on CPU_V7
1097855c551fSCatalin Marinas	help
1098855c551fSCatalin Marinas	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1099855c551fSCatalin Marinas	  erratum. For very specific sequences of memory operations, it is
1100855c551fSCatalin Marinas	  possible for a hazard condition intended for a cache line to instead
1101855c551fSCatalin Marinas	  be incorrectly associated with a different cache line. This false
1102855c551fSCatalin Marinas	  hazard might then cause a processor deadlock. The workaround enables
1103855c551fSCatalin Marinas	  the L1 caching of the NEON accesses and disables the PLD instruction
1104855c551fSCatalin Marinas	  in the ACTLR register. Note that setting specific bits in the ACTLR
1105855c551fSCatalin Marinas	  register may not be available in non-secure mode.
1106855c551fSCatalin Marinas
11070516e464SCatalin Marinasconfig ARM_ERRATA_460075
11080516e464SCatalin Marinas	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
11090516e464SCatalin Marinas	depends on CPU_V7
11100516e464SCatalin Marinas	help
11110516e464SCatalin Marinas	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
11120516e464SCatalin Marinas	  erratum. Any asynchronous access to the L2 cache may encounter a
11130516e464SCatalin Marinas	  situation in which recent store transactions to the L2 cache are lost
11140516e464SCatalin Marinas	  and overwritten with stale memory contents from external memory. The
11150516e464SCatalin Marinas	  workaround disables the write-allocate mode for the L2 cache via the
11160516e464SCatalin Marinas	  ACTLR register. Note that setting specific bits in the ACTLR register
11170516e464SCatalin Marinas	  may not be available in non-secure mode.
11180516e464SCatalin Marinas
11199f05027cSWill Deaconconfig ARM_ERRATA_742230
11209f05027cSWill Deacon	bool "ARM errata: DMB operation may be faulty"
11219f05027cSWill Deacon	depends on CPU_V7 && SMP
11229f05027cSWill Deacon	help
11239f05027cSWill Deacon	  This option enables the workaround for the 742230 Cortex-A9
11249f05027cSWill Deacon	  (r1p0..r2p2) erratum. Under rare circumstances, a DMB instruction
11259f05027cSWill Deacon	  between two write operations may not ensure the correct visibility
11269f05027cSWill Deacon	  ordering of the two writes. This workaround sets a specific bit in
11279f05027cSWill Deacon	  the diagnostic register of the Cortex-A9 which causes the DMB
11289f05027cSWill Deacon	  instruction to behave as a DSB, ensuring the correct behaviour of
11299f05027cSWill Deacon	  the two writes.
11309f05027cSWill Deacon
1131a672e99bSWill Deaconconfig ARM_ERRATA_742231
1132a672e99bSWill Deacon	bool "ARM errata: Incorrect hazard handling in the SCU may lead to data corruption"
1133a672e99bSWill Deacon	depends on CPU_V7 && SMP
1134a672e99bSWill Deacon	help
1135a672e99bSWill Deacon	  This option enables the workaround for the 742231 Cortex-A9
1136a672e99bSWill Deacon	  (r2p0..r2p2) erratum. Under certain conditions, specific to the
1137a672e99bSWill Deacon	  Cortex-A9 MPCore micro-architecture, two CPUs working in SMP mode,
1138a672e99bSWill Deacon	  accessing some data located in the same cache line, may get corrupted
1139a672e99bSWill Deacon	  data due to bad handling of the address hazard when the line gets
1140a672e99bSWill Deacon	  replaced from one of the CPUs at the same time as another CPU is
1141a672e99bSWill Deacon	  accessing it. This workaround sets specific bits in the diagnostic
1142a672e99bSWill Deacon	  register of the Cortex-A9 which reduces the linefill issuing
1143a672e99bSWill Deacon	  capabilities of the processor.
1144a672e99bSWill Deacon
11459e65582aSSantosh Shilimkarconfig PL310_ERRATA_588369
11469e65582aSSantosh Shilimkar	bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
11479e65582aSSantosh Shilimkar	depends on CACHE_L2X0 && ARCH_OMAP4
11489e65582aSSantosh Shilimkar	help
11499e65582aSSantosh Shilimkar	   The PL310 L2 cache controller implements three types of Clean &
11509e65582aSSantosh Shilimkar	   Invalidate maintenance operations: by Physical Address
11519e65582aSSantosh Shilimkar	   (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
11529e65582aSSantosh Shilimkar	   They are architecturally defined to behave as the execution of a
11539e65582aSSantosh Shilimkar	   clean operation followed immediately by an invalidate operation,
11549e65582aSSantosh Shilimkar	   both performing to the same memory location. This functionality
11559e65582aSSantosh Shilimkar	   is not correctly implemented in PL310 as clean lines are not
11569e65582aSSantosh Shilimkar	   invalidated as a result of these operations. Note that this errata
11579e65582aSSantosh Shilimkar	   uses Texas Instrument's secure monitor api.
1158cdf357f1SWill Deacon
1159cdf357f1SWill Deaconconfig ARM_ERRATA_720789
1160cdf357f1SWill Deacon	bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1161cdf357f1SWill Deacon	depends on CPU_V7 && SMP
1162cdf357f1SWill Deacon	help
1163cdf357f1SWill Deacon	  This option enables the workaround for the 720789 Cortex-A9 (prior to
1164cdf357f1SWill Deacon	  r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1165cdf357f1SWill Deacon	  broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1166cdf357f1SWill Deacon	  As a consequence of this erratum, some TLB entries which should be
1167cdf357f1SWill Deacon	  invalidated are not, resulting in an incoherency in the system page
1168cdf357f1SWill Deacon	  tables. The workaround changes the TLB flushing routines to invalidate
1169cdf357f1SWill Deacon	  entries regardless of the ASID.
1170475d92fcSWill Deacon
1171475d92fcSWill Deaconconfig ARM_ERRATA_743622
1172475d92fcSWill Deacon	bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
1173475d92fcSWill Deacon	depends on CPU_V7
1174475d92fcSWill Deacon	help
1175475d92fcSWill Deacon	  This option enables the workaround for the 743622 Cortex-A9
1176475d92fcSWill Deacon	  (r2p0..r2p2) erratum. Under very rare conditions, a faulty
1177475d92fcSWill Deacon	  optimisation in the Cortex-A9 Store Buffer may lead to data
1178475d92fcSWill Deacon	  corruption. This workaround sets a specific bit in the diagnostic
1179475d92fcSWill Deacon	  register of the Cortex-A9 which disables the Store Buffer
1180475d92fcSWill Deacon	  optimisation, preventing the defect from occurring. This has no
1181475d92fcSWill Deacon	  visible impact on the overall performance or power consumption of the
1182475d92fcSWill Deacon	  processor.
1183475d92fcSWill Deacon
11841da177e4SLinus Torvaldsendmenu
11851da177e4SLinus Torvalds
11861da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
11871da177e4SLinus Torvalds
11881da177e4SLinus Torvaldsmenu "Bus support"
11891da177e4SLinus Torvalds
11901da177e4SLinus Torvaldsconfig ARM_AMBA
11911da177e4SLinus Torvalds	bool
11921da177e4SLinus Torvalds
11931da177e4SLinus Torvaldsconfig ISA
11941da177e4SLinus Torvalds	bool
11951da177e4SLinus Torvalds	help
11961da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
11971da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
11981da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
11991da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
12001da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
12011da177e4SLinus Torvalds
1202065909b9SRussell King# Select ISA DMA controller support
12031da177e4SLinus Torvaldsconfig ISA_DMA
12041da177e4SLinus Torvalds	bool
1205065909b9SRussell King	select ISA_DMA_API
12061da177e4SLinus Torvalds
1207065909b9SRussell King# Select ISA DMA interface
12085cae841bSAl Viroconfig ISA_DMA_API
12095cae841bSAl Viro	bool
12105cae841bSAl Viro
12111da177e4SLinus Torvaldsconfig PCI
12120b05da72SHans Ulli Kroll	bool "PCI support" if MIGHT_HAVE_PCI
12131da177e4SLinus Torvalds	help
12141da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
12151da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
12161da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
12171da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
12181da177e4SLinus Torvalds
121952882173SAnton Vorontsovconfig PCI_DOMAINS
122052882173SAnton Vorontsov	bool
122152882173SAnton Vorontsov	depends on PCI
122252882173SAnton Vorontsov
1223b080ac8aSMarcelo Roberto Jimenezconfig PCI_NANOENGINE
1224b080ac8aSMarcelo Roberto Jimenez	bool "BSE nanoEngine PCI support"
1225b080ac8aSMarcelo Roberto Jimenez	depends on SA1100_NANOENGINE
1226b080ac8aSMarcelo Roberto Jimenez	help
1227b080ac8aSMarcelo Roberto Jimenez	  Enable PCI on the BSE nanoEngine board.
1228b080ac8aSMarcelo Roberto Jimenez
122936e23590SMatthew Wilcoxconfig PCI_SYSCALL
123036e23590SMatthew Wilcox	def_bool PCI
123136e23590SMatthew Wilcox
12321da177e4SLinus Torvalds# Select the host bridge type
12331da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
12341da177e4SLinus Torvalds	bool
12351da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
12361da177e4SLinus Torvalds	default y
12371da177e4SLinus Torvalds
1238a0113a99SMike Rapoportconfig PCI_HOST_ITE8152
1239a0113a99SMike Rapoport	bool
1240a0113a99SMike Rapoport	depends on PCI && MACH_ARMCORE
1241a0113a99SMike Rapoport	default y
1242a0113a99SMike Rapoport	select DMABOUNCE
1243a0113a99SMike Rapoport
12441da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
12451da177e4SLinus Torvalds
12461da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
12471da177e4SLinus Torvalds
12481da177e4SLinus Torvaldsendmenu
12491da177e4SLinus Torvalds
12501da177e4SLinus Torvaldsmenu "Kernel Features"
12511da177e4SLinus Torvalds
12520567a0c0SKevin Hilmansource "kernel/time/Kconfig"
12530567a0c0SKevin Hilman
12541da177e4SLinus Torvaldsconfig SMP
12551da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1256971acb9bSRussell King	depends on EXPERIMENTAL
1257bc28248eSRussell King	depends on GENERIC_CLOCKEVENTS
1258971acb9bSRussell King	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
1259971acb9bSRussell King		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
126089c3dedfSDaniel Walker		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
1261e9d728f5SPaul Mundt		 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
1262f6dd9fa5SJens Axboe	select USE_GENERIC_SMP_HELPERS
126389c3dedfSDaniel Walker	select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
12641da177e4SLinus Torvalds	help
12651da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
12661da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
12671da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
12681da177e4SLinus Torvalds
12691da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
12701da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
12711da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
12721da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
12731da177e4SLinus Torvalds	  run faster if you say N here.
12741da177e4SLinus Torvalds
127503502faaSAdrian Bunk	  See also <file:Documentation/i386/IO-APIC.txt>,
12761da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
127750a23e6eSJustin P. Mattock	  <http://tldp.org/HOWTO/SMP-HOWTO.html>.
12781da177e4SLinus Torvalds
12791da177e4SLinus Torvalds	  If you don't know what to do here, say N.
12801da177e4SLinus Torvalds
1281f00ec48fSRussell Kingconfig SMP_ON_UP
1282f00ec48fSRussell King	bool "Allow booting SMP kernel on uniprocessor systems (EXPERIMENTAL)"
1283f00ec48fSRussell King	depends on EXPERIMENTAL
12844d2692a7SNicolas Pitre	depends on SMP && !XIP_KERNEL
1285f00ec48fSRussell King	default y
1286f00ec48fSRussell King	help
1287f00ec48fSRussell King	  SMP kernels contain instructions which fail on non-SMP processors.
1288f00ec48fSRussell King	  Enabling this option allows the kernel to modify itself to make
1289f00ec48fSRussell King	  these instructions safe.  Disabling it allows about 1K of space
1290f00ec48fSRussell King	  savings.
1291f00ec48fSRussell King
1292f00ec48fSRussell King	  If you don't know what to do here, say Y.
1293f00ec48fSRussell King
1294a8cbcd92SRussell Kingconfig HAVE_ARM_SCU
1295a8cbcd92SRussell King	bool
1296a8cbcd92SRussell King	depends on SMP
1297a8cbcd92SRussell King	help
1298a8cbcd92SRussell King	  This option enables support for the ARM system coherency unit
1299a8cbcd92SRussell King
1300f32f4ce2SRussell Kingconfig HAVE_ARM_TWD
1301f32f4ce2SRussell King	bool
1302f32f4ce2SRussell King	depends on SMP
130315095bb0SRussell King	select TICK_ONESHOT
1304f32f4ce2SRussell King	help
1305f32f4ce2SRussell King	  This options enables support for the ARM timer and watchdog unit
1306f32f4ce2SRussell King
13078d5796d2SLennert Buytenhekchoice
13088d5796d2SLennert Buytenhek	prompt "Memory split"
13098d5796d2SLennert Buytenhek	default VMSPLIT_3G
13108d5796d2SLennert Buytenhek	help
13118d5796d2SLennert Buytenhek	  Select the desired split between kernel and user memory.
13128d5796d2SLennert Buytenhek
13138d5796d2SLennert Buytenhek	  If you are not absolutely sure what you are doing, leave this
13148d5796d2SLennert Buytenhek	  option alone!
13158d5796d2SLennert Buytenhek
13168d5796d2SLennert Buytenhek	config VMSPLIT_3G
13178d5796d2SLennert Buytenhek		bool "3G/1G user/kernel split"
13188d5796d2SLennert Buytenhek	config VMSPLIT_2G
13198d5796d2SLennert Buytenhek		bool "2G/2G user/kernel split"
13208d5796d2SLennert Buytenhek	config VMSPLIT_1G
13218d5796d2SLennert Buytenhek		bool "1G/3G user/kernel split"
13228d5796d2SLennert Buytenhekendchoice
13238d5796d2SLennert Buytenhek
13248d5796d2SLennert Buytenhekconfig PAGE_OFFSET
13258d5796d2SLennert Buytenhek	hex
13268d5796d2SLennert Buytenhek	default 0x40000000 if VMSPLIT_1G
13278d5796d2SLennert Buytenhek	default 0x80000000 if VMSPLIT_2G
13288d5796d2SLennert Buytenhek	default 0xC0000000
13298d5796d2SLennert Buytenhek
13301da177e4SLinus Torvaldsconfig NR_CPUS
13311da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
13321da177e4SLinus Torvalds	range 2 32
13331da177e4SLinus Torvalds	depends on SMP
13341da177e4SLinus Torvalds	default "4"
13351da177e4SLinus Torvalds
1336a054a811SRussell Kingconfig HOTPLUG_CPU
1337a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1338a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
1339176bfc44SDaniel Walker	depends on !ARCH_MSM
1340a054a811SRussell King	help
1341a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
1342a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
1343a054a811SRussell King
134437ee16aeSRussell Kingconfig LOCAL_TIMERS
134537ee16aeSRussell King	bool "Use local timer interrupts"
1346971acb9bSRussell King	depends on SMP
134737ee16aeSRussell King	default y
134889c3dedfSDaniel Walker	select HAVE_ARM_TWD if !ARCH_MSM_SCORPIONMP
134937ee16aeSRussell King	help
135037ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
135137ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
135237ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
135337ee16aeSRussell King	  "thundering herd" at every timer tick.
135437ee16aeSRussell King
1355d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt
13561da177e4SLinus Torvalds
1357f8065813SRussell Kingconfig HZ
1358f8065813SRussell King	int
135949b7a491SKukjin Kim	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P64X0 || \
13602192482eSRussell King		ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
1361bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
13625248c657SDavid Brownell	default AT91_TIMER_HZ if ARCH_AT91
13635da3e714SMagnus Damm	default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1364f8065813SRussell King	default 100
1365f8065813SRussell King
136616c79651SCatalin Marinasconfig THUMB2_KERNEL
13674a50bfe3SRussell King	bool "Compile the kernel in Thumb-2 mode (EXPERIMENTAL)"
13686e6fc998SDave Martin	depends on CPU_V7 && !CPU_V6 && EXPERIMENTAL
136916c79651SCatalin Marinas	select AEABI
137016c79651SCatalin Marinas	select ARM_ASM_UNIFIED
137116c79651SCatalin Marinas	help
137216c79651SCatalin Marinas	  By enabling this option, the kernel will be compiled in
137316c79651SCatalin Marinas	  Thumb-2 mode. A compiler/assembler that understand the unified
137416c79651SCatalin Marinas	  ARM-Thumb syntax is needed.
137516c79651SCatalin Marinas
137616c79651SCatalin Marinas	  If unsure, say N.
137716c79651SCatalin Marinas
13780becb088SCatalin Marinasconfig ARM_ASM_UNIFIED
13790becb088SCatalin Marinas	bool
13800becb088SCatalin Marinas
1381704bdda0SNicolas Pitreconfig AEABI
1382704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
1383704bdda0SNicolas Pitre	help
1384704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
1385704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
1386704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
1387704bdda0SNicolas Pitre
1388704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
1389704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
1390704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
1391704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
1392704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
1393704bdda0SNicolas Pitre
1394704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
1395704bdda0SNicolas Pitre
13966c90c872SNicolas Pitreconfig OABI_COMPAT
1397a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
139861c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
13996c90c872SNicolas Pitre	default y
14006c90c872SNicolas Pitre	help
14016c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
14026c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
14036c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
14046c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
14056c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
14066c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
14076c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
14086c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
14096c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
14106c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
14116c90c872SNicolas Pitre	  at all). If in doubt say Y.
14126c90c872SNicolas Pitre
1413eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL
1414e80d6a24SMel Gorman	bool
1415e80d6a24SMel Gorman
141605944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE
141705944d74SRussell King	bool
141805944d74SRussell King
141907a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT
142007a2f737SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
142107a2f737SRussell King
142205944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL
1423be370302SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
1424c80d79d7SYasunori Goto
1425053a96caSNicolas Pitreconfig HIGHMEM
1426053a96caSNicolas Pitre	bool "High Memory Support (EXPERIMENTAL)"
1427053a96caSNicolas Pitre	depends on MMU && EXPERIMENTAL
1428053a96caSNicolas Pitre	help
1429053a96caSNicolas Pitre	  The address space of ARM processors is only 4 Gigabytes large
1430053a96caSNicolas Pitre	  and it has to accommodate user address space, kernel address
1431053a96caSNicolas Pitre	  space as well as some memory mapped IO. That means that, if you
1432053a96caSNicolas Pitre	  have a large amount of physical memory and/or IO, not all of the
1433053a96caSNicolas Pitre	  memory can be "permanently mapped" by the kernel. The physical
1434053a96caSNicolas Pitre	  memory that is not permanently mapped is called "high memory".
1435053a96caSNicolas Pitre
1436053a96caSNicolas Pitre	  Depending on the selected kernel/user memory split, minimum
1437053a96caSNicolas Pitre	  vmalloc space and actual amount of RAM, you may not need this
1438053a96caSNicolas Pitre	  option which should result in a slightly faster kernel.
1439053a96caSNicolas Pitre
1440053a96caSNicolas Pitre	  If unsure, say n.
1441053a96caSNicolas Pitre
144265cec8e3SRussell Kingconfig HIGHPTE
144365cec8e3SRussell King	bool "Allocate 2nd-level pagetables from highmem"
144465cec8e3SRussell King	depends on HIGHMEM
144565cec8e3SRussell King	depends on !OUTER_CACHE
144665cec8e3SRussell King
14471b8873a0SJamie Ilesconfig HW_PERF_EVENTS
14481b8873a0SJamie Iles	bool "Enable hardware performance counter support for perf events"
1449fe166148SWill Deacon	depends on PERF_EVENTS && CPU_HAS_PMU
14501b8873a0SJamie Iles	default y
14511b8873a0SJamie Iles	help
14521b8873a0SJamie Iles	  Enable hardware performance counter support for perf events. If
14531b8873a0SJamie Iles	  disabled, perf events will use software events only.
14541b8873a0SJamie Iles
14553f22ab27SDave Hansensource "mm/Kconfig"
14563f22ab27SDave Hansen
1457c1b2d970SMagnus Dammconfig FORCE_MAX_ZONEORDER
1458c1b2d970SMagnus Damm	int "Maximum zone order" if ARCH_SHMOBILE
1459c1b2d970SMagnus Damm	range 11 64 if ARCH_SHMOBILE
1460c1b2d970SMagnus Damm	default "9" if SA1111
1461c1b2d970SMagnus Damm	default "11"
1462c1b2d970SMagnus Damm	help
1463c1b2d970SMagnus Damm	  The kernel memory allocator divides physically contiguous memory
1464c1b2d970SMagnus Damm	  blocks into "zones", where each zone is a power of two number of
1465c1b2d970SMagnus Damm	  pages.  This option selects the largest power of two that the kernel
1466c1b2d970SMagnus Damm	  keeps in the memory allocator.  If you need to allocate very large
1467c1b2d970SMagnus Damm	  blocks of physically contiguous memory, then you may need to
1468c1b2d970SMagnus Damm	  increase this value.
1469c1b2d970SMagnus Damm
1470c1b2d970SMagnus Damm	  This config option is actually maximum order plus one. For example,
1471c1b2d970SMagnus Damm	  a value of 11 means that the largest free memory block is 2^10 pages.
1472c1b2d970SMagnus Damm
14731da177e4SLinus Torvaldsconfig LEDS
14741da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
1475e055d5bfSAdrian Bunk	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
14768c8fdbc9SSascha Hauer		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
14771da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
14781da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
147973a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
148025329671SJürgen Schindele		   ARCH_AT91 || ARCH_DAVINCI || \
1481ff3042fbSColin Tuckley		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
14821da177e4SLinus Torvalds	help
14831da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
14841da177e4SLinus Torvalds	  to provide useful information about your current system status.
14851da177e4SLinus Torvalds
14861da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
14871da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
14881da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
14891da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
14901da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
14911da177e4SLinus Torvalds	  system, but the driver will do nothing.
14921da177e4SLinus Torvalds
14931da177e4SLinus Torvaldsconfig LEDS_TIMER
14941da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1495eebdf7d7SDavid Brownell			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1496eebdf7d7SDavid Brownell			    || MACH_OMAP_PERSEUS2
14971da177e4SLinus Torvalds	depends on LEDS
14980567a0c0SKevin Hilman	depends on !GENERIC_CLOCKEVENTS
14991da177e4SLinus Torvalds	default y if ARCH_EBSA110
15001da177e4SLinus Torvalds	help
15011da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
15021da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
15031da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
15041da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
15051da177e4SLinus Torvalds	  debugging unstable kernels.
15061da177e4SLinus Torvalds
15071da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
15081da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
15091da177e4SLinus Torvalds	  will overrule the CPU usage LED.
15101da177e4SLinus Torvalds
15111da177e4SLinus Torvaldsconfig LEDS_CPU
15121da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1513eebdf7d7SDavid Brownell			!ARCH_OMAP) \
1514eebdf7d7SDavid Brownell			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1515eebdf7d7SDavid Brownell			|| MACH_OMAP_PERSEUS2
15161da177e4SLinus Torvalds	depends on LEDS
15171da177e4SLinus Torvalds	help
15181da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
15191da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
15201da177e4SLinus Torvalds	  is not currently executing.
15211da177e4SLinus Torvalds
15221da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
15231da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
15241da177e4SLinus Torvalds	  will overrule the CPU usage LED.
15251da177e4SLinus Torvalds
15261da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
15271da177e4SLinus Torvalds	bool
1528f12d0d7cSHyok S. Choi	depends on CPU_CP15_MMU
15291da177e4SLinus Torvalds	default y if !ARCH_EBSA110
1530e119bfffSRussell King	select HAVE_PROC_CPU if PROC_FS
15311da177e4SLinus Torvalds	help
15321da177e4SLinus Torvalds	  ARM processors cannot fetch/store information which is not
15331da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
15341da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
15351da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
15361da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
15371da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
15381da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
15391da177e4SLinus Torvalds
154039ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY
154139ec58f3SLennert Buytenhek	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
154239ec58f3SLennert Buytenhek	depends on MMU && EXPERIMENTAL
154339ec58f3SLennert Buytenhek	default y if CPU_FEROCEON
154439ec58f3SLennert Buytenhek	help
154539ec58f3SLennert Buytenhek	  Implement faster copy_to_user and clear_user methods for CPU
154639ec58f3SLennert Buytenhek	  cores where a 8-word STM instruction give significantly higher
154739ec58f3SLennert Buytenhek	  memory write throughput than a sequence of individual 32bit stores.
154839ec58f3SLennert Buytenhek
154939ec58f3SLennert Buytenhek	  A possible side effect is a slight increase in scheduling latency
155039ec58f3SLennert Buytenhek	  between threads sharing the same address space if they invoke
155139ec58f3SLennert Buytenhek	  such copy operations with large buffers.
155239ec58f3SLennert Buytenhek
155339ec58f3SLennert Buytenhek	  However, if the CPU data cache is using a write-allocate mode,
155439ec58f3SLennert Buytenhek	  this option is unlikely to provide any performance gain.
155539ec58f3SLennert Buytenhek
155670c70d97SNicolas Pitreconfig SECCOMP
155770c70d97SNicolas Pitre	bool
155870c70d97SNicolas Pitre	prompt "Enable seccomp to safely compute untrusted bytecode"
155970c70d97SNicolas Pitre	---help---
156070c70d97SNicolas Pitre	  This kernel feature is useful for number crunching applications
156170c70d97SNicolas Pitre	  that may need to compute untrusted bytecode during their
156270c70d97SNicolas Pitre	  execution. By using pipes or other transports made available to
156370c70d97SNicolas Pitre	  the process as file descriptors supporting the read/write
156470c70d97SNicolas Pitre	  syscalls, it's possible to isolate those applications in
156570c70d97SNicolas Pitre	  their own address space using seccomp. Once seccomp is
156670c70d97SNicolas Pitre	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
156770c70d97SNicolas Pitre	  and the task is only allowed to execute a few safe syscalls
156870c70d97SNicolas Pitre	  defined by each seccomp mode.
156970c70d97SNicolas Pitre
1570c743f380SNicolas Pitreconfig CC_STACKPROTECTOR
1571c743f380SNicolas Pitre	bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
15724a50bfe3SRussell King	depends on EXPERIMENTAL
1573c743f380SNicolas Pitre	help
1574c743f380SNicolas Pitre	  This option turns on the -fstack-protector GCC feature. This
1575c743f380SNicolas Pitre	  feature puts, at the beginning of functions, a canary value on
1576c743f380SNicolas Pitre	  the stack just before the return address, and validates
1577c743f380SNicolas Pitre	  the value just before actually returning.  Stack based buffer
1578c743f380SNicolas Pitre	  overflows (that need to overwrite this return address) now also
1579c743f380SNicolas Pitre	  overwrite the canary, which gets detected and the attack is then
1580c743f380SNicolas Pitre	  neutralized via a kernel panic.
1581c743f380SNicolas Pitre	  This feature requires gcc version 4.2 or above.
1582c743f380SNicolas Pitre
158373a65b3fSUwe Kleine-Königconfig DEPRECATED_PARAM_STRUCT
158473a65b3fSUwe Kleine-König	bool "Provide old way to pass kernel parameters"
158573a65b3fSUwe Kleine-König	help
158673a65b3fSUwe Kleine-König	  This was deprecated in 2001 and announced to live on for 5 years.
158773a65b3fSUwe Kleine-König	  Some old boot loaders still use this way.
158873a65b3fSUwe Kleine-König
15891da177e4SLinus Torvaldsendmenu
15901da177e4SLinus Torvalds
15911da177e4SLinus Torvaldsmenu "Boot options"
15921da177e4SLinus Torvalds
15931da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
15941da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
15951da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
15961da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
15971da177e4SLinus Torvalds	default "0"
15981da177e4SLinus Torvalds	help
15991da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
16001da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
16011da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
16021da177e4SLinus Torvalds	  value in their defconfig file.
16031da177e4SLinus Torvalds
16041da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
16051da177e4SLinus Torvalds
16061da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
16071da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
16081da177e4SLinus Torvalds	default "0"
16091da177e4SLinus Torvalds	help
1610f8c440b2SDan Fandrich	  The base address of an area of read/write memory in the target
1611f8c440b2SDan Fandrich	  for the ROM-able zImage which must be available while the
1612f8c440b2SDan Fandrich	  decompressor is running. It must be large enough to hold the
1613f8c440b2SDan Fandrich	  entire decompressed kernel plus an additional 128 KiB.
1614f8c440b2SDan Fandrich	  Platforms which normally make use of ROM-able zImage formats
1615f8c440b2SDan Fandrich	  normally set this to a suitable value in their defconfig file.
16161da177e4SLinus Torvalds
16171da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
16181da177e4SLinus Torvalds
16191da177e4SLinus Torvaldsconfig ZBOOT_ROM
16201da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
16211da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
16221da177e4SLinus Torvalds	help
16231da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
16241da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
16251da177e4SLinus Torvalds
16261da177e4SLinus Torvaldsconfig CMDLINE
16271da177e4SLinus Torvalds	string "Default kernel command string"
16281da177e4SLinus Torvalds	default ""
16291da177e4SLinus Torvalds	help
16301da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
16311da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
16321da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
16331da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
16341da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
16351da177e4SLinus Torvalds
163692d2040dSAlexander Hollerconfig CMDLINE_FORCE
163792d2040dSAlexander Holler	bool "Always use the default kernel command string"
163892d2040dSAlexander Holler	depends on CMDLINE != ""
163992d2040dSAlexander Holler	help
164092d2040dSAlexander Holler	  Always use the default kernel command string, even if the boot
164192d2040dSAlexander Holler	  loader passes other arguments to the kernel.
164292d2040dSAlexander Holler	  This is useful if you cannot or don't want to change the
164392d2040dSAlexander Holler	  command-line options your boot loader passes to the kernel.
164492d2040dSAlexander Holler
164592d2040dSAlexander Holler	  If unsure, say N.
164692d2040dSAlexander Holler
16471da177e4SLinus Torvaldsconfig XIP_KERNEL
16481da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
16491da177e4SLinus Torvalds	depends on !ZBOOT_ROM
16501da177e4SLinus Torvalds	help
16511da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
16521da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
16531da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
16541da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
16551da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
16561da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
16571da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
16581da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
16591da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
16601da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
16611da177e4SLinus Torvalds
16621da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
16631da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
16641da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
16651da177e4SLinus Torvalds
16661da177e4SLinus Torvalds	  If unsure, say N.
16671da177e4SLinus Torvalds
16681da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
16691da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
16701da177e4SLinus Torvalds	depends on XIP_KERNEL
16711da177e4SLinus Torvalds	default "0x00080000"
16721da177e4SLinus Torvalds	help
16731da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
16741da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
16751da177e4SLinus Torvalds	  own flash usage.
16761da177e4SLinus Torvalds
1677c587e4a6SRichard Purdieconfig KEXEC
1678c587e4a6SRichard Purdie	bool "Kexec system call (EXPERIMENTAL)"
1679c587e4a6SRichard Purdie	depends on EXPERIMENTAL
1680c587e4a6SRichard Purdie	help
1681c587e4a6SRichard Purdie	  kexec is a system call that implements the ability to shutdown your
1682c587e4a6SRichard Purdie	  current kernel, and to start another kernel.  It is like a reboot
168301dd2fbfSMatt LaPlante	  but it is independent of the system firmware.   And like a reboot
1684c587e4a6SRichard Purdie	  you can start any kernel with it, not just Linux.
1685c587e4a6SRichard Purdie
1686c587e4a6SRichard Purdie	  It is an ongoing process to be certain the hardware in a machine
1687c587e4a6SRichard Purdie	  is properly shutdown, so do not be surprised if this code does not
1688c587e4a6SRichard Purdie	  initially work for you.  It may help to enable device hotplugging
1689c587e4a6SRichard Purdie	  support.
1690c587e4a6SRichard Purdie
16914cd9d6f7SRichard Purdieconfig ATAGS_PROC
16924cd9d6f7SRichard Purdie	bool "Export atags in procfs"
1693b98d7291SUli Luckas	depends on KEXEC
1694b98d7291SUli Luckas	default y
16954cd9d6f7SRichard Purdie	help
16964cd9d6f7SRichard Purdie	  Should the atags used to boot the kernel be exported in an "atags"
16974cd9d6f7SRichard Purdie	  file in procfs. Useful with kexec.
16984cd9d6f7SRichard Purdie
1699cb5d39b3SMika Westerbergconfig CRASH_DUMP
1700cb5d39b3SMika Westerberg	bool "Build kdump crash kernel (EXPERIMENTAL)"
1701cb5d39b3SMika Westerberg	depends on EXPERIMENTAL
1702cb5d39b3SMika Westerberg	help
1703cb5d39b3SMika Westerberg	  Generate crash dump after being started by kexec. This should
1704cb5d39b3SMika Westerberg	  be normally only set in special crash dump kernels which are
1705cb5d39b3SMika Westerberg	  loaded in the main kernel with kexec-tools into a specially
1706cb5d39b3SMika Westerberg	  reserved region and then later executed after a crash by
1707cb5d39b3SMika Westerberg	  kdump/kexec. The crash dump kernel must be compiled to a
1708cb5d39b3SMika Westerberg	  memory address not used by the main kernel
1709cb5d39b3SMika Westerberg
1710cb5d39b3SMika Westerberg	  For more details see Documentation/kdump/kdump.txt
1711cb5d39b3SMika Westerberg
1712e69edc79SEric Miaoconfig AUTO_ZRELADDR
1713e69edc79SEric Miao	bool "Auto calculation of the decompressed kernel image address"
1714e69edc79SEric Miao	depends on !ZBOOT_ROM && !ARCH_U300
1715e69edc79SEric Miao	help
1716e69edc79SEric Miao	  ZRELADDR is the physical address where the decompressed kernel
1717e69edc79SEric Miao	  image will be placed. If AUTO_ZRELADDR is selected, the address
1718e69edc79SEric Miao	  will be determined at run-time by masking the current IP with
1719e69edc79SEric Miao	  0xf8000000. This assumes the zImage being placed in the first 128MB
1720e69edc79SEric Miao	  from start of memory.
1721e69edc79SEric Miao
17221da177e4SLinus Torvaldsendmenu
17231da177e4SLinus Torvalds
1724ac9d7efcSRussell Kingmenu "CPU Power Management"
17251da177e4SLinus Torvalds
172689c52ed4SBen Dooksif ARCH_HAS_CPUFREQ
17271da177e4SLinus Torvalds
17281da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
17291da177e4SLinus Torvalds
173064f102b6SYong Shenconfig CPU_FREQ_IMX
173164f102b6SYong Shen	tristate "CPUfreq driver for i.MX CPUs"
173264f102b6SYong Shen	depends on ARCH_MXC && CPU_FREQ
173364f102b6SYong Shen	help
173464f102b6SYong Shen	  This enables the CPUfreq driver for i.MX CPUs.
173564f102b6SYong Shen
17361da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
17371da177e4SLinus Torvalds	bool
17381da177e4SLinus Torvalds
17391da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
17401da177e4SLinus Torvalds	bool
17411da177e4SLinus Torvalds
17421da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
17431da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
17441da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
17451da177e4SLinus Torvalds	default y
17461da177e4SLinus Torvalds	help
17471da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
17481da177e4SLinus Torvalds
17491da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
17501da177e4SLinus Torvalds
17511da177e4SLinus Torvalds	  If in doubt, say Y.
17521da177e4SLinus Torvalds
17539e2697ffSRussell Kingconfig CPU_FREQ_PXA
17549e2697ffSRussell King	bool
17559e2697ffSRussell King	depends on CPU_FREQ && ARCH_PXA && PXA25x
17569e2697ffSRussell King	default y
17579e2697ffSRussell King	select CPU_FREQ_DEFAULT_GOV_USERSPACE
17589e2697ffSRussell King
1759b3748dddSMark Brownconfig CPU_FREQ_S3C64XX
1760b3748dddSMark Brown	bool "CPUfreq support for Samsung S3C64XX CPUs"
1761b3748dddSMark Brown	depends on CPU_FREQ && CPU_S3C6410
1762b3748dddSMark Brown
17639d56c02aSBen Dooksconfig CPU_FREQ_S3C
17649d56c02aSBen Dooks	bool
17659d56c02aSBen Dooks	help
17669d56c02aSBen Dooks	  Internal configuration node for common cpufreq on Samsung SoC
17679d56c02aSBen Dooks
17689d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX
17694a50bfe3SRussell King	bool "CPUfreq driver for Samsung S3C24XX series CPUs (EXPERIMENTAL)"
17709d56c02aSBen Dooks	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
17719d56c02aSBen Dooks	select CPU_FREQ_S3C
17729d56c02aSBen Dooks	help
17739d56c02aSBen Dooks	  This enables the CPUfreq driver for the Samsung S3C24XX family
17749d56c02aSBen Dooks	  of CPUs.
17759d56c02aSBen Dooks
17769d56c02aSBen Dooks	  For details, take a look at <file:Documentation/cpu-freq>.
17779d56c02aSBen Dooks
17789d56c02aSBen Dooks	  If in doubt, say N.
17799d56c02aSBen Dooks
17809d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL
17814a50bfe3SRussell King	bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
17829d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
17839d56c02aSBen Dooks	help
17849d56c02aSBen Dooks	  Compile in support for changing the PLL frequency from the
17859d56c02aSBen Dooks	  S3C24XX series CPUfreq driver. The PLL takes time to settle
17869d56c02aSBen Dooks	  after a frequency change, so by default it is not enabled.
17879d56c02aSBen Dooks
17889d56c02aSBen Dooks	  This also means that the PLL tables for the selected CPU(s) will
17899d56c02aSBen Dooks	  be built which may increase the size of the kernel image.
17909d56c02aSBen Dooks
17919d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG
17929d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver core"
17939d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
17949d56c02aSBen Dooks	help
17959d56c02aSBen Dooks	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
17969d56c02aSBen Dooks
17979d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG
17989d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver IO timing"
17999d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
18009d56c02aSBen Dooks	help
18019d56c02aSBen Dooks	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
18029d56c02aSBen Dooks
1803e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS
1804e6d197a6SBen Dooks	bool "Export debugfs for CPUFreq"
1805e6d197a6SBen Dooks	depends on CPU_FREQ_S3C24XX && DEBUG_FS
1806e6d197a6SBen Dooks	help
1807e6d197a6SBen Dooks	  Export status information via debugfs.
1808e6d197a6SBen Dooks
18091da177e4SLinus Torvaldsendif
18101da177e4SLinus Torvalds
1811ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig"
1812ac9d7efcSRussell King
1813ac9d7efcSRussell Kingendmenu
1814ac9d7efcSRussell King
18151da177e4SLinus Torvaldsmenu "Floating point emulation"
18161da177e4SLinus Torvalds
18171da177e4SLinus Torvaldscomment "At least one emulation must be selected"
18181da177e4SLinus Torvalds
18191da177e4SLinus Torvaldsconfig FPE_NWFPE
18201da177e4SLinus Torvalds	bool "NWFPE math emulation"
1821593c252aSDave Martin	depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
18221da177e4SLinus Torvalds	---help---
18231da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
18241da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
18251da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
18261da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
18271da177e4SLinus Torvalds
18281da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
18291da177e4SLinus Torvalds	  early in the bootup.
18301da177e4SLinus Torvalds
18311da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
18321da177e4SLinus Torvalds	bool "Support extended precision"
1833bedf142bSLennert Buytenhek	depends on FPE_NWFPE
18341da177e4SLinus Torvalds	help
18351da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
18361da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
18371da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
18381da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
18391da177e4SLinus Torvalds	  floating point emulator without any good reason.
18401da177e4SLinus Torvalds
18411da177e4SLinus Torvalds	  You almost surely want to say N here.
18421da177e4SLinus Torvalds
18431da177e4SLinus Torvaldsconfig FPE_FASTFPE
18441da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
18458993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
18461da177e4SLinus Torvalds	---help---
18471da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
18481da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
18491da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
18501da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
18511da177e4SLinus Torvalds
18521da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
18531da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
18541da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
18551da177e4SLinus Torvalds	  choose NWFPE.
18561da177e4SLinus Torvalds
18571da177e4SLinus Torvaldsconfig VFP
18581da177e4SLinus Torvalds	bool "VFP-format floating point maths"
1859c00d4ffdSRussell King	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
18601da177e4SLinus Torvalds	help
18611da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
18621da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
18631da177e4SLinus Torvalds
18641da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
18651da177e4SLinus Torvalds	  release notes and additional status information.
18661da177e4SLinus Torvalds
18671da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
18681da177e4SLinus Torvalds
186925ebee02SCatalin Marinasconfig VFPv3
187025ebee02SCatalin Marinas	bool
187125ebee02SCatalin Marinas	depends on VFP
187225ebee02SCatalin Marinas	default y if CPU_V7
187325ebee02SCatalin Marinas
1874b5872db4SCatalin Marinasconfig NEON
1875b5872db4SCatalin Marinas	bool "Advanced SIMD (NEON) Extension support"
1876b5872db4SCatalin Marinas	depends on VFPv3 && CPU_V7
1877b5872db4SCatalin Marinas	help
1878b5872db4SCatalin Marinas	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1879b5872db4SCatalin Marinas	  Extension.
1880b5872db4SCatalin Marinas
18811da177e4SLinus Torvaldsendmenu
18821da177e4SLinus Torvalds
18831da177e4SLinus Torvaldsmenu "Userspace binary formats"
18841da177e4SLinus Torvalds
18851da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
18861da177e4SLinus Torvalds
18871da177e4SLinus Torvaldsconfig ARTHUR
18881da177e4SLinus Torvalds	tristate "RISC OS personality"
1889704bdda0SNicolas Pitre	depends on !AEABI
18901da177e4SLinus Torvalds	help
18911da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
18921da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
18931da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
18941da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
18951da177e4SLinus Torvalds	  will be called arthur).
18961da177e4SLinus Torvalds
18971da177e4SLinus Torvaldsendmenu
18981da177e4SLinus Torvalds
18991da177e4SLinus Torvaldsmenu "Power management options"
19001da177e4SLinus Torvalds
1901eceab4acSRussell Kingsource "kernel/power/Kconfig"
19021da177e4SLinus Torvalds
1903f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE
1904f4cb5700SJohannes Berg	def_bool y
1905f4cb5700SJohannes Berg
19061da177e4SLinus Torvaldsendmenu
19071da177e4SLinus Torvalds
1908d5950b43SSam Ravnborgsource "net/Kconfig"
1909d5950b43SSam Ravnborg
1910ac25150fSUwe Kleine-Königsource "drivers/Kconfig"
19111da177e4SLinus Torvalds
19121da177e4SLinus Torvaldssource "fs/Kconfig"
19131da177e4SLinus Torvalds
19141da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
19151da177e4SLinus Torvalds
19161da177e4SLinus Torvaldssource "security/Kconfig"
19171da177e4SLinus Torvalds
19181da177e4SLinus Torvaldssource "crypto/Kconfig"
19191da177e4SLinus Torvalds
19201da177e4SLinus Torvaldssource "lib/Kconfig"
1921