xref: /linux/arch/arm/Kconfig (revision 882d01f96bc1909455696aae6eb7ce4df3e908c8)
11da177e4SLinus Torvalds#
21da177e4SLinus Torvalds# For a description of the syntax of this configuration file,
31da177e4SLinus Torvalds# see Documentation/kbuild/kconfig-language.txt.
41da177e4SLinus Torvalds#
51da177e4SLinus Torvalds
61da177e4SLinus Torvaldsmainmenu "Linux Kernel Configuration"
71da177e4SLinus Torvalds
81da177e4SLinus Torvaldsconfig ARM
91da177e4SLinus Torvalds	bool
101da177e4SLinus Torvalds	default y
11e17c6d56SDavid Woodhouse	select HAVE_AOUT
122064c946SAdrian Bunk	select HAVE_IDE
1312b824fbSAlessandro Zummo	select RTC_LIB
1475e7153aSRalf Baechle	select SYS_SUPPORTS_APM_EMULATION
1542d4b839SMathieu Desnoyers	select HAVE_OPROFILE
165cbad0ebSJason Wessel	select HAVE_ARCH_KGDB
173f550096SMathieu Desnoyers	select HAVE_KPROBES if (!XIP_KERNEL)
189edddaa2SAnanth N Mavinakayanahalli	select HAVE_KRETPROBES if (HAVE_KPROBES)
19606576ceSSteven Rostedt	select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
201fe53268SDmitry Baryshkov	select HAVE_GENERIC_DMA_COHERENT
21e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_GZIP
22e7db7b42SAlbin Tonnerre	select HAVE_KERNEL_LZO
231da177e4SLinus Torvalds	help
241da177e4SLinus Torvalds	  The ARM series is a line of low-power-consumption RISC chip designs
25f6c8965aSMartin Michlmayr	  licensed by ARM Ltd and targeted at embedded applications and
261da177e4SLinus Torvalds	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
271da177e4SLinus Torvalds	  manufactured, but legacy ARM-based PC hardware remains popular in
281da177e4SLinus Torvalds	  Europe.  There is an ARM Linux project with a web page at
291da177e4SLinus Torvalds	  <http://www.arm.linux.org.uk/>.
301da177e4SLinus Torvalds
311a189b97SRussell Kingconfig HAVE_PWM
321a189b97SRussell King	bool
331a189b97SRussell King
3475e7153aSRalf Baechleconfig SYS_SUPPORTS_APM_EMULATION
3575e7153aSRalf Baechle	bool
3675e7153aSRalf Baechle
370a938b97SDavid Brownellconfig GENERIC_GPIO
380a938b97SDavid Brownell	bool
390a938b97SDavid Brownell
40746140c7SKevin Hilmanconfig GENERIC_TIME
41746140c7SKevin Hilman	bool
42746140c7SKevin Hilman
430567a0c0SKevin Hilmanconfig GENERIC_CLOCKEVENTS
440567a0c0SKevin Hilman	bool
450567a0c0SKevin Hilman
46a8655e83SCatalin Marinasconfig GENERIC_CLOCKEVENTS_BROADCAST
47a8655e83SCatalin Marinas	bool
48a8655e83SCatalin Marinas	depends on GENERIC_CLOCKEVENTS
49a8655e83SCatalin Marinas	default y if SMP && !LOCAL_TIMERS
50a8655e83SCatalin Marinas
51bc581770SLinus Walleijconfig HAVE_TCM
52bc581770SLinus Walleij	bool
53bc581770SLinus Walleij	select GENERIC_ALLOCATOR
54bc581770SLinus Walleij
555ea81769SAl Viroconfig NO_IOPORT
565ea81769SAl Viro	bool
575ea81769SAl Viro
581da177e4SLinus Torvaldsconfig EISA
591da177e4SLinus Torvalds	bool
601da177e4SLinus Torvalds	---help---
611da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
621da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
631da177e4SLinus Torvalds
641da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
651da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
661da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
671da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
681da177e4SLinus Torvalds
691da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
701da177e4SLinus Torvalds
711da177e4SLinus Torvalds	  Otherwise, say N.
721da177e4SLinus Torvalds
731da177e4SLinus Torvaldsconfig SBUS
741da177e4SLinus Torvalds	bool
751da177e4SLinus Torvalds
761da177e4SLinus Torvaldsconfig MCA
771da177e4SLinus Torvalds	bool
781da177e4SLinus Torvalds	help
791da177e4SLinus Torvalds	  MicroChannel Architecture is found in some IBM PS/2 machines and
801da177e4SLinus Torvalds	  laptops.  It is a bus system similar to PCI or ISA. See
811da177e4SLinus Torvalds	  <file:Documentation/mca.txt> (and especially the web page given
821da177e4SLinus Torvalds	  there) before attempting to build an MCA bus kernel.
831da177e4SLinus Torvalds
844a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS
854a2581a0SThomas Gleixner	bool
864a2581a0SThomas Gleixner	default y
874a2581a0SThomas Gleixner
88f16fb1ecSRussell Kingconfig STACKTRACE_SUPPORT
89f16fb1ecSRussell King	bool
90f16fb1ecSRussell King	default y
91f16fb1ecSRussell King
92f76e9154SNicolas Pitreconfig HAVE_LATENCYTOP_SUPPORT
93f76e9154SNicolas Pitre	bool
94f76e9154SNicolas Pitre	depends on !SMP
95f76e9154SNicolas Pitre	default y
96f76e9154SNicolas Pitre
97f16fb1ecSRussell Kingconfig LOCKDEP_SUPPORT
98f16fb1ecSRussell King	bool
99f16fb1ecSRussell King	default y
100f16fb1ecSRussell King
1017ad1bcb2SRussell Kingconfig TRACE_IRQFLAGS_SUPPORT
1027ad1bcb2SRussell King	bool
1037ad1bcb2SRussell King	default y
1047ad1bcb2SRussell King
1054a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND
1064a2581a0SThomas Gleixner	bool
1074a2581a0SThomas Gleixner	default y
1084a2581a0SThomas Gleixner
1094a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE
1104a2581a0SThomas Gleixner	bool
1114a2581a0SThomas Gleixner	default y
1124a2581a0SThomas Gleixner
11395c354feSNick Pigginconfig GENERIC_LOCKBREAK
11495c354feSNick Piggin	bool
11595c354feSNick Piggin	default y
11695c354feSNick Piggin	depends on SMP && PREEMPT
11795c354feSNick Piggin
1181da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK
1191da177e4SLinus Torvalds	bool
1201da177e4SLinus Torvalds	default y
1211da177e4SLinus Torvalds
1221da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
1231da177e4SLinus Torvalds	bool
1241da177e4SLinus Torvalds
125f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U32
126f0d1b0b3SDavid Howells	bool
127f0d1b0b3SDavid Howells
128f0d1b0b3SDavid Howellsconfig ARCH_HAS_ILOG2_U64
129f0d1b0b3SDavid Howells	bool
130f0d1b0b3SDavid Howells
13189c52ed4SBen Dooksconfig ARCH_HAS_CPUFREQ
13289c52ed4SBen Dooks	bool
13389c52ed4SBen Dooks	help
13489c52ed4SBen Dooks	  Internal node to signify that the ARCH has CPUFREQ support
13589c52ed4SBen Dooks	  and that the relevant menu configurations are displayed for
13689c52ed4SBen Dooks	  it.
13789c52ed4SBen Dooks
138b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
139b89c3b16SAkinobu Mita	bool
140b89c3b16SAkinobu Mita	default y
141b89c3b16SAkinobu Mita
1421da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
1431da177e4SLinus Torvalds	bool
1441da177e4SLinus Torvalds	default y
1451da177e4SLinus Torvalds
146a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
147a08b6b79Sviro@ZenIV.linux.org.uk	bool
148a08b6b79Sviro@ZenIV.linux.org.uk
1495ac6da66SChristoph Lameterconfig ZONE_DMA
1505ac6da66SChristoph Lameter	bool
1515ac6da66SChristoph Lameter
1521da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
1531da177e4SLinus Torvalds	bool
1541da177e4SLinus Torvalds
1551da177e4SLinus Torvaldsconfig FIQ
1561da177e4SLinus Torvalds	bool
1571da177e4SLinus Torvalds
158034d2f5aSAl Viroconfig ARCH_MTD_XIP
159034d2f5aSAl Viro	bool
160034d2f5aSAl Viro
16160a752efSPaulius Zaleckasconfig GENERIC_HARDIRQS_NO__DO_IRQ
16260a752efSPaulius Zaleckas	def_bool y
16360a752efSPaulius Zaleckas
164c0ffa3a9SMathieu Desnoyersif OPROFILE
165c0ffa3a9SMathieu Desnoyers
166c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARMV6
167c0ffa3a9SMathieu Desnoyers	def_bool y
168c0ffa3a9SMathieu Desnoyers	depends on CPU_V6 && !SMP
169c0ffa3a9SMathieu Desnoyers	select OPROFILE_ARM11_CORE
170c0ffa3a9SMathieu Desnoyers
171c0ffa3a9SMathieu Desnoyersconfig OPROFILE_MPCORE
172c0ffa3a9SMathieu Desnoyers	def_bool y
173c0ffa3a9SMathieu Desnoyers	depends on CPU_V6 && SMP
174c0ffa3a9SMathieu Desnoyers	select OPROFILE_ARM11_CORE
175c0ffa3a9SMathieu Desnoyers
176c0ffa3a9SMathieu Desnoyersconfig OPROFILE_ARM11_CORE
177c0ffa3a9SMathieu Desnoyers	bool
178c0ffa3a9SMathieu Desnoyers
179d7ac4e28SJean PIHETconfig OPROFILE_ARMV7
180d7ac4e28SJean PIHET	def_bool y
181d7ac4e28SJean PIHET	depends on CPU_V7 && !SMP
182d7ac4e28SJean PIHET	bool
183d7ac4e28SJean PIHET
184c0ffa3a9SMathieu Desnoyersendif
185c0ffa3a9SMathieu Desnoyers
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
2071da177e4SLinus Torvaldschoice
2081da177e4SLinus Torvalds	prompt "ARM system type"
2096a0e2430SCatalin Marinas	default ARCH_VERSATILE
2101da177e4SLinus Torvalds
2114af6fee1SDeepak Saxenaconfig ARCH_AAEC2000
2124af6fee1SDeepak Saxena	bool "Agilent AAEC-2000 based"
213c750815eSRussell King	select CPU_ARM920T
2144af6fee1SDeepak Saxena	select ARM_AMBA
2159483a578SDavid Brownell	select HAVE_CLK
2164af6fee1SDeepak Saxena	help
2174af6fee1SDeepak Saxena	  This enables support for systems based on the Agilent AAEC-2000
2184af6fee1SDeepak Saxena
2194af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR
2204af6fee1SDeepak Saxena	bool "ARM Ltd. Integrator family"
2214af6fee1SDeepak Saxena	select ARM_AMBA
22289c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
2239483a578SDavid Brownell	select HAVE_CLK
224d72fbdf0SRussell King	select COMMON_CLKDEV
2254af6fee1SDeepak Saxena	select ICST525
2264af6fee1SDeepak Saxena	help
2274af6fee1SDeepak Saxena	  Support for ARM's Integrator platform.
2284af6fee1SDeepak Saxena
2294af6fee1SDeepak Saxenaconfig ARCH_REALVIEW
2304af6fee1SDeepak Saxena	bool "ARM Ltd. RealView family"
2314af6fee1SDeepak Saxena	select ARM_AMBA
2329483a578SDavid Brownell	select HAVE_CLK
233cf30fb4aSRussell King	select COMMON_CLKDEV
2344af6fee1SDeepak Saxena	select ICST307
23585802afeSCatalin Marinas	select GENERIC_TIME
236ae30ceacSCatalin Marinas	select GENERIC_CLOCKEVENTS
237eb7fffa3SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
2384af6fee1SDeepak Saxena	help
2394af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
2404af6fee1SDeepak Saxena
2414af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
2424af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
2434af6fee1SDeepak Saxena	select ARM_AMBA
2444af6fee1SDeepak Saxena	select ARM_VIC
2459483a578SDavid Brownell	select HAVE_CLK
24671a06da0SRussell King	select COMMON_CLKDEV
2474af6fee1SDeepak Saxena	select ICST307
248b49c87c2SKevin Hilman	select GENERIC_TIME
24989df1272SKevin Hilman	select GENERIC_CLOCKEVENTS
250bbeddc43SRussell King	select ARCH_WANT_OPTIONAL_GPIOLIB
2514af6fee1SDeepak Saxena	help
2524af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
2534af6fee1SDeepak Saxena
2548fc5ffa0SAndrew Victorconfig ARCH_AT91
2558fc5ffa0SAndrew Victor	bool "Atmel AT91"
2560a938b97SDavid Brownell	select GENERIC_GPIO
257f373e8c0SRyan Mallon	select ARCH_REQUIRE_GPIOLIB
25893686ae8SDavid Brownell	select HAVE_CLK
2594af6fee1SDeepak Saxena	help
2602b3b3516SAndrew Victor	  This enables support for systems based on the Atmel AT91RM9200,
2612b3b3516SAndrew Victor	  AT91SAM9 and AT91CAP9 processors.
2624af6fee1SDeepak Saxena
2631da177e4SLinus Torvaldsconfig ARCH_CLPS711X
2644af6fee1SDeepak Saxena	bool "Cirrus Logic CLPS711x/EP721x-based"
265c750815eSRussell King	select CPU_ARM720T
266f999b8bdSMartin Michlmayr	help
267f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
2681da177e4SLinus Torvalds
269788c9700SRussell Kingconfig ARCH_GEMINI
270788c9700SRussell King	bool "Cortina Systems Gemini"
271788c9700SRussell King	select CPU_FA526
272788c9700SRussell King	select GENERIC_GPIO
273788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
274788c9700SRussell King	help
275788c9700SRussell King	  Support for the Cortina Systems Gemini family SoCs
276788c9700SRussell King
2771da177e4SLinus Torvaldsconfig ARCH_EBSA110
2781da177e4SLinus Torvalds	bool "EBSA-110"
279c750815eSRussell King	select CPU_SA110
280f7e68bbfSRussell King	select ISA
281c5eb2a2bSRussell King	select NO_IOPORT
2821da177e4SLinus Torvalds	help
2831da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
284f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
2851da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
2861da177e4SLinus Torvalds	  parallel port.
2871da177e4SLinus Torvalds
288e7736d47SLennert Buytenhekconfig ARCH_EP93XX
289e7736d47SLennert Buytenhek	bool "EP93xx-based"
290c750815eSRussell King	select CPU_ARM920T
291e7736d47SLennert Buytenhek	select ARM_AMBA
292e7736d47SLennert Buytenhek	select ARM_VIC
2934e9f9fd5SHerbert Valerio Riedel	select GENERIC_GPIO
2949483a578SDavid Brownell	select HAVE_CLK
295ae696fd5SRussell King	select COMMON_CLKDEV
2967444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
297eb33575cSMel Gorman	select ARCH_HAS_HOLES_MEMORYMODEL
298e7736d47SLennert Buytenhek	help
299e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
300e7736d47SLennert Buytenhek
3011da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
3021da177e4SLinus Torvalds	bool "FootBridge"
303c750815eSRussell King	select CPU_SA110
3041da177e4SLinus Torvalds	select FOOTBRIDGE
305f999b8bdSMartin Michlmayr	help
306f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
307f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
3081da177e4SLinus Torvalds
309788c9700SRussell Kingconfig ARCH_MXC
310788c9700SRussell King	bool "Freescale MXC/iMX-based"
311788c9700SRussell King	select GENERIC_TIME
312788c9700SRussell King	select GENERIC_CLOCKEVENTS
313788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
314a2ab67faSRussell King	select HAVE_CLK
31503e09cd8SUwe Kleine-König	select COMMON_CLKDEV
316788c9700SRussell King	help
317788c9700SRussell King	  Support for Freescale MXC/iMX-based family of processors
318788c9700SRussell King
3197bd0f2f5Sdmitry pervushinconfig ARCH_STMP3XXX
3207bd0f2f5Sdmitry pervushin	bool "Freescale STMP3xxx"
3217bd0f2f5Sdmitry pervushin	select CPU_ARM926T
3227bd0f2f5Sdmitry pervushin	select HAVE_CLK
3237bd0f2f5Sdmitry pervushin	select COMMON_CLKDEV
3247bd0f2f5Sdmitry pervushin	select ARCH_REQUIRE_GPIOLIB
3257bd0f2f5Sdmitry pervushin	select GENERIC_TIME
3267bd0f2f5Sdmitry pervushin	select GENERIC_CLOCKEVENTS
3277bd0f2f5Sdmitry pervushin	select GENERIC_GPIO
3287bd0f2f5Sdmitry pervushin	select USB_ARCH_HAS_EHCI
3297bd0f2f5Sdmitry pervushin	help
3307bd0f2f5Sdmitry pervushin	  Support for systems based on the Freescale 3xxx CPUs.
3317bd0f2f5Sdmitry pervushin
3324af6fee1SDeepak Saxenaconfig ARCH_NETX
3334af6fee1SDeepak Saxena	bool "Hilscher NetX based"
334c750815eSRussell King	select CPU_ARM926T
3354af6fee1SDeepak Saxena	select ARM_VIC
3362fcfe6b8SUwe Kleine-König	select GENERIC_CLOCKEVENTS
33721edecd3SUwe Kleine-König	select GENERIC_TIME
338f999b8bdSMartin Michlmayr	help
3394af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
3404af6fee1SDeepak Saxena
3414af6fee1SDeepak Saxenaconfig ARCH_H720X
3424af6fee1SDeepak Saxena	bool "Hynix HMS720x-based"
343c750815eSRussell King	select CPU_ARM720T
3444af6fee1SDeepak Saxena	select ISA_DMA_API
3454af6fee1SDeepak Saxena	help
3464af6fee1SDeepak Saxena	  This enables support for systems based on the Hynix HMS720x
3474af6fee1SDeepak Saxena
34828ad94ecSAlessandro Rubiniconfig ARCH_NOMADIK
34928ad94ecSAlessandro Rubini	bool "STMicroelectronics Nomadik"
35028ad94ecSAlessandro Rubini	select ARM_AMBA
35128ad94ecSAlessandro Rubini	select ARM_VIC
35228ad94ecSAlessandro Rubini	select CPU_ARM926T
35328ad94ecSAlessandro Rubini	select HAVE_CLK
35428ad94ecSAlessandro Rubini	select COMMON_CLKDEV
35528ad94ecSAlessandro Rubini	select GENERIC_TIME
35628ad94ecSAlessandro Rubini	select GENERIC_CLOCKEVENTS
3572ec1d359SAlessandro Rubini	select GENERIC_GPIO
3582ec1d359SAlessandro Rubini	select ARCH_REQUIRE_GPIOLIB
35928ad94ecSAlessandro Rubini	help
36028ad94ecSAlessandro Rubini	  Support for the Nomadik platform by ST-Ericsson
36128ad94ecSAlessandro Rubini
3623b938be6SRussell Kingconfig ARCH_IOP13XX
3633b938be6SRussell King	bool "IOP13xx-based"
3643b938be6SRussell King	depends on MMU
365c750815eSRussell King	select CPU_XSC3
3663b938be6SRussell King	select PLAT_IOP
3673b938be6SRussell King	select PCI
3683b938be6SRussell King	select ARCH_SUPPORTS_MSI
3698d5796d2SLennert Buytenhek	select VMSPLIT_1G
3703b938be6SRussell King	help
3713b938be6SRussell King	  Support for Intel's IOP13XX (XScale) family of processors.
3723b938be6SRussell King
3733f7e5815SLennert Buytenhekconfig ARCH_IOP32X
3743f7e5815SLennert Buytenhek	bool "IOP32x-based"
375a4f7e763SRussell King	depends on MMU
376c750815eSRussell King	select CPU_XSCALE
3777ae1f7ecSLennert Buytenhek	select PLAT_IOP
378f7e68bbfSRussell King	select PCI
37963f385cdSArnaud Patard	select GENERIC_GPIO
380bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
381f999b8bdSMartin Michlmayr	help
3823f7e5815SLennert Buytenhek	  Support for Intel's 80219 and IOP32X (XScale) family of
3833f7e5815SLennert Buytenhek	  processors.
3843f7e5815SLennert Buytenhek
3853f7e5815SLennert Buytenhekconfig ARCH_IOP33X
3863f7e5815SLennert Buytenhek	bool "IOP33x-based"
3873f7e5815SLennert Buytenhek	depends on MMU
388c750815eSRussell King	select CPU_XSCALE
3897ae1f7ecSLennert Buytenhek	select PLAT_IOP
3903f7e5815SLennert Buytenhek	select PCI
39163f385cdSArnaud Patard	select GENERIC_GPIO
392bb2b180cSRussell King	select ARCH_REQUIRE_GPIOLIB
3933f7e5815SLennert Buytenhek	help
3943f7e5815SLennert Buytenhek	  Support for Intel's IOP33X (XScale) family of processors.
3951da177e4SLinus Torvalds
3963b938be6SRussell Kingconfig ARCH_IXP23XX
3973b938be6SRussell King 	bool "IXP23XX-based"
398588ef769SDan Williams	depends on MMU
399c750815eSRussell King	select CPU_XSC3
400285f5fa7SDan Williams 	select PCI
401285f5fa7SDan Williams	help
4023b938be6SRussell King	  Support for Intel's IXP23xx (XScale) family of processors.
4031da177e4SLinus Torvalds
4041da177e4SLinus Torvaldsconfig ARCH_IXP2000
4051da177e4SLinus Torvalds	bool "IXP2400/2800-based"
406a4f7e763SRussell King	depends on MMU
407c750815eSRussell King	select CPU_XSCALE
408f7e68bbfSRussell King	select PCI
409f999b8bdSMartin Michlmayr	help
410f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
4111da177e4SLinus Torvalds
4123b938be6SRussell Kingconfig ARCH_IXP4XX
4133b938be6SRussell King	bool "IXP4xx-based"
414a4f7e763SRussell King	depends on MMU
415c750815eSRussell King	select CPU_XSCALE
4168858e9afSMilan Svoboda	select GENERIC_GPIO
4173b938be6SRussell King	select GENERIC_TIME
4183b938be6SRussell King	select GENERIC_CLOCKEVENTS
419485bdde7SRussell King	select DMABOUNCE if PCI
420c4713074SLennert Buytenhek	help
4213b938be6SRussell King	  Support for Intel's IXP4XX (XScale) family of processors.
422c4713074SLennert Buytenhek
4231da177e4SLinus Torvaldsconfig ARCH_L7200
4241da177e4SLinus Torvalds	bool "LinkUp-L7200"
425c750815eSRussell King	select CPU_ARM720T
4261da177e4SLinus Torvalds	select FIQ
4271da177e4SLinus Torvalds	help
4281da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
4291da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
4301da177e4SLinus Torvalds	  Information on this board can be obtained at:
4311da177e4SLinus Torvalds
4321da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
4331da177e4SLinus Torvalds
4341da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
4351da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
4361da177e4SLinus Torvalds
437edabd38eSSaeed Bisharaconfig ARCH_DOVE
438edabd38eSSaeed Bishara	bool "Marvell Dove"
439edabd38eSSaeed Bishara	select PCI
440edabd38eSSaeed Bishara	select GENERIC_GPIO
441edabd38eSSaeed Bishara	select ARCH_REQUIRE_GPIOLIB
442edabd38eSSaeed Bishara	select GENERIC_TIME
443edabd38eSSaeed Bishara	select GENERIC_CLOCKEVENTS
444edabd38eSSaeed Bishara	select PLAT_ORION
445edabd38eSSaeed Bishara	help
446edabd38eSSaeed Bishara	  Support for the Marvell Dove SoC 88AP510
447edabd38eSSaeed Bishara
448651c74c7SSaeed Bisharaconfig ARCH_KIRKWOOD
449651c74c7SSaeed Bishara	bool "Marvell Kirkwood"
450c750815eSRussell King	select CPU_FEROCEON
451651c74c7SSaeed Bishara	select PCI
4524c213430SLennert Buytenhek	select GENERIC_GPIO
453a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
454651c74c7SSaeed Bishara	select GENERIC_TIME
455651c74c7SSaeed Bishara	select GENERIC_CLOCKEVENTS
456651c74c7SSaeed Bishara	select PLAT_ORION
457651c74c7SSaeed Bishara	help
458651c74c7SSaeed Bishara	  Support for the following Marvell Kirkwood series SoCs:
459651c74c7SSaeed Bishara	  88F6180, 88F6192 and 88F6281.
460651c74c7SSaeed Bishara
461788c9700SRussell Kingconfig ARCH_LOKI
462788c9700SRussell King	bool "Marvell Loki (88RC8480)"
463788c9700SRussell King	select CPU_FEROCEON
464788c9700SRussell King	select GENERIC_TIME
465788c9700SRussell King	select GENERIC_CLOCKEVENTS
466788c9700SRussell King	select PLAT_ORION
467788c9700SRussell King	help
468788c9700SRussell King	  Support for the Marvell Loki (88RC8480) SoC.
469788c9700SRussell King
470788c9700SRussell Kingconfig ARCH_MV78XX0
471788c9700SRussell King	bool "Marvell MV78xx0"
472788c9700SRussell King	select CPU_FEROCEON
473788c9700SRussell King	select PCI
474788c9700SRussell King	select GENERIC_GPIO
475a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
476788c9700SRussell King	select GENERIC_TIME
477788c9700SRussell King	select GENERIC_CLOCKEVENTS
478788c9700SRussell King	select PLAT_ORION
479788c9700SRussell King	help
480788c9700SRussell King	  Support for the following Marvell MV78xx0 series SoCs:
481788c9700SRussell King	  MV781x0, MV782x0.
482788c9700SRussell King
483788c9700SRussell Kingconfig ARCH_ORION5X
484788c9700SRussell King	bool "Marvell Orion"
485788c9700SRussell King	depends on MMU
486788c9700SRussell King	select CPU_FEROCEON
487788c9700SRussell King	select PCI
488788c9700SRussell King	select GENERIC_GPIO
489a8865655SErik Benada	select ARCH_REQUIRE_GPIOLIB
490788c9700SRussell King	select GENERIC_TIME
491788c9700SRussell King	select GENERIC_CLOCKEVENTS
492788c9700SRussell King	select PLAT_ORION
493788c9700SRussell King	help
494788c9700SRussell King	  Support for the following Marvell Orion 5x series SoCs:
495788c9700SRussell King	  Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
496788c9700SRussell King	  Orion-2 (5281), Orion-1-90 (6183).
497788c9700SRussell King
498788c9700SRussell Kingconfig ARCH_MMP
4992f7e8faeSHaojian Zhuang	bool "Marvell PXA168/910/MMP2"
500788c9700SRussell King	depends on MMU
501788c9700SRussell King	select GENERIC_GPIO
502788c9700SRussell King	select ARCH_REQUIRE_GPIOLIB
503788c9700SRussell King	select HAVE_CLK
504788c9700SRussell King	select COMMON_CLKDEV
505788c9700SRussell King	select GENERIC_TIME
506788c9700SRussell King	select GENERIC_CLOCKEVENTS
507788c9700SRussell King	select TICK_ONESHOT
508788c9700SRussell King	select PLAT_PXA
509788c9700SRussell King	help
5102f7e8faeSHaojian Zhuang	  Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
511788c9700SRussell King
512c53c9cf6SAndrew Victorconfig ARCH_KS8695
513c53c9cf6SAndrew Victor	bool "Micrel/Kendin KS8695"
514c750815eSRussell King	select CPU_ARM922T
5158a87a996SAndrew Victor	select GENERIC_GPIO
51672880ad8SDaniel Silverstone        select ARCH_REQUIRE_GPIOLIB
517c53c9cf6SAndrew Victor	help
518c53c9cf6SAndrew Victor	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
519c53c9cf6SAndrew Victor	  System-on-Chip devices.
520c53c9cf6SAndrew Victor
5219918cda5SUwe Kleine-Königconfig ARCH_NS9XXX
5229918cda5SUwe Kleine-König	bool "NetSilicon NS9xxx"
523c750815eSRussell King	select CPU_ARM926T
524689f2a01SUwe Kleine-König	select GENERIC_GPIO
525cef5975dSUwe Kleine-König	select GENERIC_TIME
526c0bb87f7SUwe Kleine-König	select GENERIC_CLOCKEVENTS
5279483a578SDavid Brownell	select HAVE_CLK
5289918cda5SUwe Kleine-König	help
5299918cda5SUwe Kleine-König	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
5309918cda5SUwe Kleine-König	  System.
5319918cda5SUwe Kleine-König
5329918cda5SUwe Kleine-König	  <http://www.digi.com/products/microprocessors/index.jsp>
5339918cda5SUwe Kleine-König
534788c9700SRussell Kingconfig ARCH_W90X900
535788c9700SRussell King	bool "Nuvoton W90X900 CPU"
536788c9700SRussell King	select CPU_ARM926T
537c52d3d68Swanzongshun	select ARCH_REQUIRE_GPIOLIB
538c52d3d68Swanzongshun	select GENERIC_GPIO
539d2c24195Swanzongshun	select HAVE_CLK
5400e4a34bbSwanzongshun	select COMMON_CLKDEV
54158b5369eSwanzongshun	select GENERIC_TIME
54258b5369eSwanzongshun	select GENERIC_CLOCKEVENTS
543777f9bebSLennert Buytenhek	help
544a8bc4eadSwanzongshun	  Support for Nuvoton (Winbond logic dept.) ARM9 processor,
545a8bc4eadSwanzongshun	  At present, the w90x900 has been renamed nuc900, regarding
546a8bc4eadSwanzongshun	  the ARM series product line, you can login the following
547a8bc4eadSwanzongshun	  link address to know more.
548a8bc4eadSwanzongshun
549a8bc4eadSwanzongshun	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
550a8bc4eadSwanzongshun		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
551585cf175STzachi Perelstein
5524af6fee1SDeepak Saxenaconfig ARCH_PNX4008
5534af6fee1SDeepak Saxena	bool "Philips Nexperia PNX4008 Mobile"
554c750815eSRussell King	select CPU_ARM926T
5559483a578SDavid Brownell	select HAVE_CLK
5564af6fee1SDeepak Saxena	help
5574af6fee1SDeepak Saxena	  This enables support for Philips PNX4008 mobile platform.
5584af6fee1SDeepak Saxena
5591da177e4SLinus Torvaldsconfig ARCH_PXA
5602c8086a5Seric miao	bool "PXA2xx/PXA3xx-based"
561a4f7e763SRussell King	depends on MMU
562034d2f5aSAl Viro	select ARCH_MTD_XIP
56389c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
5640a938b97SDavid Brownell	select GENERIC_GPIO
5659483a578SDavid Brownell	select HAVE_CLK
5668c3abc7dSRussell King	select COMMON_CLKDEV
5677444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
56845cf5eefSNicolas Pitre	select GENERIC_TIME
569981d0f39SEric Miao	select GENERIC_CLOCKEVENTS
570a88264c2SRussell King	select TICK_ONESHOT
571bd5ce433SEric Miao	select PLAT_PXA
572f999b8bdSMartin Michlmayr	help
5732c8086a5Seric miao	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
5741da177e4SLinus Torvalds
575788c9700SRussell Kingconfig ARCH_MSM
576788c9700SRussell King	bool "Qualcomm MSM"
577788c9700SRussell King	select CPU_V6
57849cbe786SEric Miao	select GENERIC_TIME
57949cbe786SEric Miao	select GENERIC_CLOCKEVENTS
58049cbe786SEric Miao	help
581788c9700SRussell King	  Support for Qualcomm MSM7K based systems.  This runs on the ARM11
582788c9700SRussell King	  apps processor of the MSM7K and depends on a shared memory
583788c9700SRussell King	  interface to the ARM9 modem processor which runs the baseband stack
584788c9700SRussell King	  and controls some vital subsystems (clock and power control, etc).
58549cbe786SEric Miao
586c793c1b0SMagnus Dammconfig ARCH_SHMOBILE
587c793c1b0SMagnus Damm	bool "Renesas SH-Mobile"
588c793c1b0SMagnus Damm	help
589c793c1b0SMagnus Damm	  Support for Renesas's SH-Mobile ARM platforms
590c793c1b0SMagnus Damm
5911da177e4SLinus Torvaldsconfig ARCH_RPC
5921da177e4SLinus Torvalds	bool "RiscPC"
5931da177e4SLinus Torvalds	select ARCH_ACORN
5941da177e4SLinus Torvalds	select FIQ
5951da177e4SLinus Torvalds	select TIMER_ACORN
596a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
597341eb781SBen Dooks	select HAVE_PATA_PLATFORM
598065909b9SRussell King	select ISA_DMA_API
5995ea81769SAl Viro	select NO_IOPORT
60007f841b7SRussell King	select ARCH_SPARSEMEM_ENABLE
6011da177e4SLinus Torvalds	help
6021da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
6031da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
6041da177e4SLinus Torvalds
6051da177e4SLinus Torvaldsconfig ARCH_SA1100
6061da177e4SLinus Torvalds	bool "SA1100-based"
607c750815eSRussell King	select CPU_SA1100
608f7e68bbfSRussell King	select ISA
60905944d74SRussell King	select ARCH_SPARSEMEM_ENABLE
610034d2f5aSAl Viro	select ARCH_MTD_XIP
61189c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
6121937f5b9SRussell King	select CPU_FREQ
6130a938b97SDavid Brownell	select GENERIC_GPIO
614d142b6e7SRussell King	select GENERIC_TIME
6153e238be2SRussell King	select GENERIC_CLOCKEVENTS
6169483a578SDavid Brownell	select HAVE_CLK
6173e238be2SRussell King	select TICK_ONESHOT
6187444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
619f999b8bdSMartin Michlmayr	help
620f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
6211da177e4SLinus Torvalds
6221da177e4SLinus Torvaldsconfig ARCH_S3C2410
623e4d06e39SBen Dooks	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
6240a938b97SDavid Brownell	select GENERIC_GPIO
6259d56c02aSBen Dooks	select ARCH_HAS_CPUFREQ
6269483a578SDavid Brownell	select HAVE_CLK
6271da177e4SLinus Torvalds	help
6281da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
6291da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
630f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
6311da177e4SLinus Torvalds
632a08ab637SBen Dooksconfig ARCH_S3C64XX
633a08ab637SBen Dooks	bool "Samsung S3C64XX"
63489f1fa08SBen Dooks	select PLAT_SAMSUNG
63589f0ce72SBen Dooks	select CPU_V6
636a08ab637SBen Dooks	select GENERIC_GPIO
63789f0ce72SBen Dooks	select ARM_VIC
638a08ab637SBen Dooks	select HAVE_CLK
63989f0ce72SBen Dooks	select NO_IOPORT
64089c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
64189f0ce72SBen Dooks	select ARCH_REQUIRE_GPIOLIB
64289f0ce72SBen Dooks	select SAMSUNG_CLKSRC
64389f0ce72SBen Dooks	select SAMSUNG_IRQ_VIC_TIMER
64489f0ce72SBen Dooks	select SAMSUNG_IRQ_UART
64589f0ce72SBen Dooks	select S3C_GPIO_TRACK
64689f0ce72SBen Dooks	select S3C_GPIO_PULL_UPDOWN
64789f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C24XX
64889f0ce72SBen Dooks	select S3C_GPIO_CFG_S3C64XX
64989f0ce72SBen Dooks	select S3C_DEV_NAND
65089f0ce72SBen Dooks	select USB_ARCH_HAS_OHCI
65189f0ce72SBen Dooks	select SAMSUNG_GPIOLIB_4BIT
652a08ab637SBen Dooks	help
653a08ab637SBen Dooks	  Samsung S3C64XX series based systems
654a08ab637SBen Dooks
655c4ffccddSKukjin Kimconfig ARCH_S5P6440
656c4ffccddSKukjin Kim	bool "Samsung S5P6440"
657c4ffccddSKukjin Kim	select CPU_V6
658c4ffccddSKukjin Kim	select GENERIC_GPIO
659c4ffccddSKukjin Kim	select HAVE_CLK
660c4ffccddSKukjin Kim	help
661c4ffccddSKukjin Kim	  Samsung S5P6440 CPU based systems
662c4ffccddSKukjin Kim
663550db7f1SKukjin Kimconfig ARCH_S5P6442
664550db7f1SKukjin Kim	bool "Samsung S5P6442"
665550db7f1SKukjin Kim	select CPU_V6
666550db7f1SKukjin Kim	select GENERIC_GPIO
667550db7f1SKukjin Kim	select HAVE_CLK
668550db7f1SKukjin Kim	help
669550db7f1SKukjin Kim	  Samsung S5P6442 CPU based systems
670550db7f1SKukjin Kim
6715a7652f2SByungho Minconfig ARCH_S5PC1XX
6725a7652f2SByungho Min	bool "Samsung S5PC1XX"
6735a7652f2SByungho Min	select GENERIC_GPIO
6745a7652f2SByungho Min	select HAVE_CLK
6755a7652f2SByungho Min	select CPU_V7
6765a7652f2SByungho Min	help
6775a7652f2SByungho Min	  Samsung S5PC1XX series based systems
6785a7652f2SByungho Min
679170f4e42SKukjin Kimconfig ARCH_S5PV210
680170f4e42SKukjin Kim	bool "Samsung S5PV210/S5PC110"
681170f4e42SKukjin Kim	select CPU_V7
682170f4e42SKukjin Kim	select GENERIC_GPIO
683170f4e42SKukjin Kim	select HAVE_CLK
684170f4e42SKukjin Kim	select ARM_L1_CACHE_SHIFT_6
685170f4e42SKukjin Kim	help
686170f4e42SKukjin Kim	  Samsung S5PV210/S5PC110 series based systems
687170f4e42SKukjin Kim
6881da177e4SLinus Torvaldsconfig ARCH_SHARK
6891da177e4SLinus Torvalds	bool "Shark"
690c750815eSRussell King	select CPU_SA110
691f7e68bbfSRussell King	select ISA
692f7e68bbfSRussell King	select ISA_DMA
6933bca103aSNicolas Pitre	select ZONE_DMA
694f7e68bbfSRussell King	select PCI
695f999b8bdSMartin Michlmayr	help
696f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
697f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
6981da177e4SLinus Torvalds
6991da177e4SLinus Torvaldsconfig ARCH_LH7A40X
7001da177e4SLinus Torvalds	bool "Sharp LH7A40X"
701c750815eSRussell King	select CPU_ARM922T
7024ba3f7c5SRussell King	select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
7034ba3f7c5SRussell King	select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
7041da177e4SLinus Torvalds	help
7051da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
7061da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
7071da177e4SLinus Torvalds	  core with a wide array of integrated devices for
7081da177e4SLinus Torvalds	  hand-held and low-power applications.
7091da177e4SLinus Torvalds
710d98aac75SLinus Walleijconfig ARCH_U300
711d98aac75SLinus Walleij	bool "ST-Ericsson U300 Series"
712d98aac75SLinus Walleij	depends on MMU
713d98aac75SLinus Walleij	select CPU_ARM926T
714bc581770SLinus Walleij	select HAVE_TCM
715d98aac75SLinus Walleij	select ARM_AMBA
716d98aac75SLinus Walleij	select ARM_VIC
717d98aac75SLinus Walleij	select GENERIC_TIME
718d98aac75SLinus Walleij	select GENERIC_CLOCKEVENTS
719d98aac75SLinus Walleij	select HAVE_CLK
720d98aac75SLinus Walleij	select COMMON_CLKDEV
721d98aac75SLinus Walleij	select GENERIC_GPIO
722d98aac75SLinus Walleij	help
723d98aac75SLinus Walleij	  Support for ST-Ericsson U300 series mobile platforms.
724d98aac75SLinus Walleij
7257c6337e2SKevin Hilmanconfig ARCH_DAVINCI
7267c6337e2SKevin Hilman	bool "TI DaVinci"
727c750815eSRussell King	select CPU_ARM926T
7287c6337e2SKevin Hilman	select GENERIC_TIME
7297c6337e2SKevin Hilman	select GENERIC_CLOCKEVENTS
7303d9edf09SVladimir Barinov	select GENERIC_GPIO
731dce1115bSDavid Brownell	select ARCH_REQUIRE_GPIOLIB
7329483a578SDavid Brownell	select HAVE_CLK
7333bca103aSNicolas Pitre	select ZONE_DMA
7349232fcc9SKevin Hilman	select HAVE_IDE
735c5b736d0SKevin Hilman	select COMMON_CLKDEV
73620e9969bSDavid Brownell	select GENERIC_ALLOCATOR
737ae88e05aSSekhar Nori	select ARCH_HAS_HOLES_MEMORYMODEL
7387c6337e2SKevin Hilman	help
7397c6337e2SKevin Hilman	  Support for TI's DaVinci platform.
7407c6337e2SKevin Hilman
7413b938be6SRussell Kingconfig ARCH_OMAP
7423b938be6SRussell King	bool "TI OMAP"
7433b938be6SRussell King	select GENERIC_GPIO
7449483a578SDavid Brownell	select HAVE_CLK
7457444a72eSMichael Buesch	select ARCH_REQUIRE_GPIOLIB
74689c52ed4SBen Dooks	select ARCH_HAS_CPUFREQ
7473b938be6SRussell King	select GENERIC_TIME
74806cad098SKevin Hilman	select GENERIC_CLOCKEVENTS
7499af915daSSriram	select ARCH_HAS_HOLES_MEMORYMODEL
7503b938be6SRussell King	help
7513b938be6SRussell King	  Support for TI's OMAP platform (OMAP1 and OMAP2).
7523b938be6SRussell King
7536288e28dSLeo Chenconfig ARCH_BCMRING
7546288e28dSLeo Chen	bool "Broadcom BCMRING"
7556288e28dSLeo Chen	depends on MMU
7566288e28dSLeo Chen	select CPU_V6
7576288e28dSLeo Chen	select ARM_AMBA
7586288e28dSLeo Chen	select COMMON_CLKDEV
7596288e28dSLeo Chen	select GENERIC_TIME
7606288e28dSLeo Chen	select GENERIC_CLOCKEVENTS
7616288e28dSLeo Chen	select ARCH_WANT_OPTIONAL_GPIOLIB
7626288e28dSLeo Chen	help
7636288e28dSLeo Chen	  Support for Broadcom's BCMRing platform.
7646288e28dSLeo Chen
765850265e8SSrinidhi Kasagarconfig ARCH_U8500
766850265e8SSrinidhi Kasagar	bool "ST-Ericsson U8500 Series"
767850265e8SSrinidhi Kasagar	select CPU_V7
768850265e8SSrinidhi Kasagar	select ARM_AMBA
769850265e8SSrinidhi Kasagar	select GENERIC_TIME
770850265e8SSrinidhi Kasagar	select GENERIC_CLOCKEVENTS
771850265e8SSrinidhi Kasagar	select COMMON_CLKDEV
772850265e8SSrinidhi Kasagar	help
773850265e8SSrinidhi Kasagar	  Support for ST-Ericsson's Ux500 architecture
774850265e8SSrinidhi Kasagar
7751da177e4SLinus Torvaldsendchoice
7761da177e4SLinus Torvalds
77795b8f20fSRussell Kingsource "arch/arm/mach-aaec2000/Kconfig"
77895b8f20fSRussell King
77995b8f20fSRussell Kingsource "arch/arm/mach-at91/Kconfig"
78095b8f20fSRussell King
78195b8f20fSRussell Kingsource "arch/arm/mach-bcmring/Kconfig"
78295b8f20fSRussell King
7831da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
7841da177e4SLinus Torvalds
78595b8f20fSRussell Kingsource "arch/arm/mach-davinci/Kconfig"
78695b8f20fSRussell King
78795b8f20fSRussell Kingsource "arch/arm/mach-dove/Kconfig"
78895b8f20fSRussell King
789e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
790e7736d47SLennert Buytenhek
7911da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
7921da177e4SLinus Torvalds
79359d3a193SPaulius Zaleckassource "arch/arm/mach-gemini/Kconfig"
79459d3a193SPaulius Zaleckas
79595b8f20fSRussell Kingsource "arch/arm/mach-h720x/Kconfig"
79695b8f20fSRussell King
7971da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
7981da177e4SLinus Torvalds
7993f7e5815SLennert Buytenheksource "arch/arm/mach-iop32x/Kconfig"
8003f7e5815SLennert Buytenhek
8013f7e5815SLennert Buytenheksource "arch/arm/mach-iop33x/Kconfig"
8021da177e4SLinus Torvalds
803285f5fa7SDan Williamssource "arch/arm/mach-iop13xx/Kconfig"
804285f5fa7SDan Williams
8051da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
8061da177e4SLinus Torvalds
8071da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
8081da177e4SLinus Torvalds
809c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig"
810c4713074SLennert Buytenhek
81195b8f20fSRussell Kingsource "arch/arm/mach-kirkwood/Kconfig"
81295b8f20fSRussell King
81395b8f20fSRussell Kingsource "arch/arm/mach-ks8695/Kconfig"
81495b8f20fSRussell King
81595b8f20fSRussell Kingsource "arch/arm/mach-lh7a40x/Kconfig"
81695b8f20fSRussell King
817777f9bebSLennert Buytenheksource "arch/arm/mach-loki/Kconfig"
818777f9bebSLennert Buytenhek
81995b8f20fSRussell Kingsource "arch/arm/mach-msm/Kconfig"
82095b8f20fSRussell King
821794d15b2SStanislav Samsonovsource "arch/arm/mach-mv78xx0/Kconfig"
822794d15b2SStanislav Samsonov
82395b8f20fSRussell Kingsource "arch/arm/plat-mxc/Kconfig"
8241da177e4SLinus Torvalds
82595b8f20fSRussell Kingsource "arch/arm/mach-netx/Kconfig"
82649cbe786SEric Miao
82795b8f20fSRussell Kingsource "arch/arm/mach-nomadik/Kconfig"
82895b8f20fSRussell Kingsource "arch/arm/plat-nomadik/Kconfig"
82995b8f20fSRussell King
83095b8f20fSRussell Kingsource "arch/arm/mach-ns9xxx/Kconfig"
8311da177e4SLinus Torvalds
832d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
833d48af15eSTony Lindgren
834d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
8351da177e4SLinus Torvalds
8361dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
8371dbae815STony Lindgren
8389dd0b194SLennert Buytenheksource "arch/arm/mach-orion5x/Kconfig"
839585cf175STzachi Perelstein
84095b8f20fSRussell Kingsource "arch/arm/mach-pxa/Kconfig"
84195b8f20fSRussell Kingsource "arch/arm/plat-pxa/Kconfig"
8421da177e4SLinus Torvalds
84395b8f20fSRussell Kingsource "arch/arm/mach-mmp/Kconfig"
84495b8f20fSRussell King
84595b8f20fSRussell Kingsource "arch/arm/mach-realview/Kconfig"
84695b8f20fSRussell King
84795b8f20fSRussell Kingsource "arch/arm/mach-sa1100/Kconfig"
848edabd38eSSaeed Bishara
849cf383678SBen Dookssource "arch/arm/plat-samsung/Kconfig"
850a21765a7SBen Dookssource "arch/arm/plat-s3c24xx/Kconfig"
851c4ffccddSKukjin Kimsource "arch/arm/plat-s5p/Kconfig"
8525a7652f2SByungho Minsource "arch/arm/plat-s5pc1xx/Kconfig"
853a21765a7SBen Dooks
854a21765a7SBen Dooksif ARCH_S3C2410
855a21765a7SBen Dookssource "arch/arm/mach-s3c2400/Kconfig"
8561da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
857a21765a7SBen Dookssource "arch/arm/mach-s3c2412/Kconfig"
858a21765a7SBen Dookssource "arch/arm/mach-s3c2440/Kconfig"
859e4d06e39SBen Dookssource "arch/arm/mach-s3c2443/Kconfig"
860a21765a7SBen Dooksendif
8611da177e4SLinus Torvalds
862a08ab637SBen Dooksif ARCH_S3C64XX
863431107eaSBen Dookssource "arch/arm/mach-s3c64xx/Kconfig"
864a08ab637SBen Dooksendif
865a08ab637SBen Dooks
866c4ffccddSKukjin Kimsource "arch/arm/mach-s5p6440/Kconfig"
867c4ffccddSKukjin Kim
868550db7f1SKukjin Kimsource "arch/arm/mach-s5p6442/Kconfig"
8697bd0f2f5Sdmitry pervushin
8705a7652f2SByungho Minif ARCH_S5PC1XX
8715a7652f2SByungho Minsource "arch/arm/mach-s5pc100/Kconfig"
8725a7652f2SByungho Minendif
8735a7652f2SByungho Min
874170f4e42SKukjin Kimsource "arch/arm/mach-s5pv210/Kconfig"
875170f4e42SKukjin Kim
876*882d01f9SRussell Kingsource "arch/arm/mach-shmobile/Kconfig"
8771da177e4SLinus Torvalds
878*882d01f9SRussell Kingsource "arch/arm/plat-stmp3xxx/Kconfig"
8799e73c84cSBrian Swetland
88095b8f20fSRussell Kingsource "arch/arm/mach-u300/Kconfig"
88152c543f9SQuinn Jensen
88295b8f20fSRussell Kingsource "arch/arm/mach-ux500/Kconfig"
8831da177e4SLinus Torvalds
8841da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
8851da177e4SLinus Torvalds
8867ec80ddfSwanzongshunsource "arch/arm/mach-w90x900/Kconfig"
8877ec80ddfSwanzongshun
8881da177e4SLinus Torvalds# Definitions to make life easier
8891da177e4SLinus Torvaldsconfig ARCH_ACORN
8901da177e4SLinus Torvalds	bool
8911da177e4SLinus Torvalds
8927ae1f7ecSLennert Buytenhekconfig PLAT_IOP
8937ae1f7ecSLennert Buytenhek	bool
894469d3044SMikael Pettersson	select GENERIC_CLOCKEVENTS
895980f2296SMikael Pettersson	select GENERIC_TIME
8967ae1f7ecSLennert Buytenhek
89769b02f6aSLennert Buytenhekconfig PLAT_ORION
89869b02f6aSLennert Buytenhek	bool
89969b02f6aSLennert Buytenhek
900bd5ce433SEric Miaoconfig PLAT_PXA
901bd5ce433SEric Miao	bool
902bd5ce433SEric Miao
9031da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
9041da177e4SLinus Torvalds
905afe4b25eSLennert Buytenhekconfig IWMMXT
906afe4b25eSLennert Buytenhek	bool "Enable iWMMXt support"
90740305a58SEric Miao	depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
90840305a58SEric Miao	default y if PXA27x || PXA3xx || ARCH_MMP
909afe4b25eSLennert Buytenhek	help
910afe4b25eSLennert Buytenhek	  Enable support for iWMMXt context switching at run time if
911afe4b25eSLennert Buytenhek	  running on a CPU that supports it.
912afe4b25eSLennert Buytenhek
9131da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
9141da177e4SLinus Torvaldsconfig XSCALE_PMU
9151da177e4SLinus Torvalds	bool
9161da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
9171da177e4SLinus Torvalds	default y
9181da177e4SLinus Torvalds
9193b93e7b0SHyok S. Choiif !MMU
9203b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
9213b93e7b0SHyok S. Choiendif
9223b93e7b0SHyok S. Choi
9239cba3cccSCatalin Marinasconfig ARM_ERRATA_411920
9249cba3cccSCatalin Marinas	bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
9259cba3cccSCatalin Marinas	depends on CPU_V6 && !SMP
9269cba3cccSCatalin Marinas	help
9279cba3cccSCatalin Marinas	  Invalidation of the Instruction Cache operation can
9289cba3cccSCatalin Marinas	  fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
9299cba3cccSCatalin Marinas	  It does not affect the MPCore. This option enables the ARM Ltd.
9309cba3cccSCatalin Marinas	  recommended workaround.
9319cba3cccSCatalin Marinas
9327ce236fcSCatalin Marinasconfig ARM_ERRATA_430973
9337ce236fcSCatalin Marinas	bool "ARM errata: Stale prediction on replaced interworking branch"
9347ce236fcSCatalin Marinas	depends on CPU_V7
9357ce236fcSCatalin Marinas	help
9367ce236fcSCatalin Marinas	  This option enables the workaround for the 430973 Cortex-A8
9377ce236fcSCatalin Marinas	  (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
9387ce236fcSCatalin Marinas	  interworking branch is replaced with another code sequence at the
9397ce236fcSCatalin Marinas	  same virtual address, whether due to self-modifying code or virtual
9407ce236fcSCatalin Marinas	  to physical address re-mapping, Cortex-A8 does not recover from the
9417ce236fcSCatalin Marinas	  stale interworking branch prediction. This results in Cortex-A8
9427ce236fcSCatalin Marinas	  executing the new code sequence in the incorrect ARM or Thumb state.
9437ce236fcSCatalin Marinas	  The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
9447ce236fcSCatalin Marinas	  and also flushes the branch target cache at every context switch.
9457ce236fcSCatalin Marinas	  Note that setting specific bits in the ACTLR register may not be
9467ce236fcSCatalin Marinas	  available in non-secure mode.
9477ce236fcSCatalin Marinas
948855c551fSCatalin Marinasconfig ARM_ERRATA_458693
949855c551fSCatalin Marinas	bool "ARM errata: Processor deadlock when a false hazard is created"
950855c551fSCatalin Marinas	depends on CPU_V7
951855c551fSCatalin Marinas	help
952855c551fSCatalin Marinas	  This option enables the workaround for the 458693 Cortex-A8 (r2p0)
953855c551fSCatalin Marinas	  erratum. For very specific sequences of memory operations, it is
954855c551fSCatalin Marinas	  possible for a hazard condition intended for a cache line to instead
955855c551fSCatalin Marinas	  be incorrectly associated with a different cache line. This false
956855c551fSCatalin Marinas	  hazard might then cause a processor deadlock. The workaround enables
957855c551fSCatalin Marinas	  the L1 caching of the NEON accesses and disables the PLD instruction
958855c551fSCatalin Marinas	  in the ACTLR register. Note that setting specific bits in the ACTLR
959855c551fSCatalin Marinas	  register may not be available in non-secure mode.
960855c551fSCatalin Marinas
9610516e464SCatalin Marinasconfig ARM_ERRATA_460075
9620516e464SCatalin Marinas	bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
9630516e464SCatalin Marinas	depends on CPU_V7
9640516e464SCatalin Marinas	help
9650516e464SCatalin Marinas	  This option enables the workaround for the 460075 Cortex-A8 (r2p0)
9660516e464SCatalin Marinas	  erratum. Any asynchronous access to the L2 cache may encounter a
9670516e464SCatalin Marinas	  situation in which recent store transactions to the L2 cache are lost
9680516e464SCatalin Marinas	  and overwritten with stale memory contents from external memory. The
9690516e464SCatalin Marinas	  workaround disables the write-allocate mode for the L2 cache via the
9700516e464SCatalin Marinas	  ACTLR register. Note that setting specific bits in the ACTLR register
9710516e464SCatalin Marinas	  may not be available in non-secure mode.
9720516e464SCatalin Marinas
9731da177e4SLinus Torvaldsendmenu
9741da177e4SLinus Torvalds
9751da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
9761da177e4SLinus Torvalds
9771da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
9781da177e4SLinus Torvalds	int
9791da177e4SLinus Torvalds	depends on SA1111
9801da177e4SLinus Torvalds	default "9"
9811da177e4SLinus Torvalds
9821da177e4SLinus Torvaldsmenu "Bus support"
9831da177e4SLinus Torvalds
9841da177e4SLinus Torvaldsconfig ARM_AMBA
9851da177e4SLinus Torvalds	bool
9861da177e4SLinus Torvalds
9871da177e4SLinus Torvaldsconfig ISA
9881da177e4SLinus Torvalds	bool
9891da177e4SLinus Torvalds	help
9901da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
9911da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
9921da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
9931da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
9941da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
9951da177e4SLinus Torvalds
996065909b9SRussell King# Select ISA DMA controller support
9971da177e4SLinus Torvaldsconfig ISA_DMA
9981da177e4SLinus Torvalds	bool
999065909b9SRussell King	select ISA_DMA_API
10001da177e4SLinus Torvalds
1001065909b9SRussell King# Select ISA DMA interface
10025cae841bSAl Viroconfig ISA_DMA_API
10035cae841bSAl Viro	bool
10045cae841bSAl Viro
10051da177e4SLinus Torvaldsconfig PCI
1006a0113a99SMike Rapoport	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
10071da177e4SLinus Torvalds	help
10081da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
10091da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
10101da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
10111da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
10121da177e4SLinus Torvalds
101336e23590SMatthew Wilcoxconfig PCI_SYSCALL
101436e23590SMatthew Wilcox	def_bool PCI
101536e23590SMatthew Wilcox
10161da177e4SLinus Torvalds# Select the host bridge type
10171da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
10181da177e4SLinus Torvalds	bool
10191da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
10201da177e4SLinus Torvalds	default y
10211da177e4SLinus Torvalds
1022a0113a99SMike Rapoportconfig PCI_HOST_ITE8152
1023a0113a99SMike Rapoport	bool
1024a0113a99SMike Rapoport	depends on PCI && MACH_ARMCORE
1025a0113a99SMike Rapoport	default y
1026a0113a99SMike Rapoport	select DMABOUNCE
1027a0113a99SMike Rapoport
10281da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
10291da177e4SLinus Torvalds
10301da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
10311da177e4SLinus Torvalds
10321da177e4SLinus Torvaldsendmenu
10331da177e4SLinus Torvalds
10341da177e4SLinus Torvaldsmenu "Kernel Features"
10351da177e4SLinus Torvalds
10360567a0c0SKevin Hilmansource "kernel/time/Kconfig"
10370567a0c0SKevin Hilman
10381da177e4SLinus Torvaldsconfig SMP
10391da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
104042578c82SRussell King	depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1041850265e8SSrinidhi Kasagar		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1042bc28248eSRussell King	depends on GENERIC_CLOCKEVENTS
1043f6dd9fa5SJens Axboe	select USE_GENERIC_SMP_HELPERS
1044850265e8SSrinidhi Kasagar	select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
10451da177e4SLinus Torvalds	help
10461da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
10471da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
10481da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
10491da177e4SLinus Torvalds
10501da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
10511da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
10521da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
10531da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
10541da177e4SLinus Torvalds	  run faster if you say N here.
10551da177e4SLinus Torvalds
105603502faaSAdrian Bunk	  See also <file:Documentation/i386/IO-APIC.txt>,
10571da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
10581da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
10591da177e4SLinus Torvalds
10601da177e4SLinus Torvalds	  If you don't know what to do here, say N.
10611da177e4SLinus Torvalds
1062a8cbcd92SRussell Kingconfig HAVE_ARM_SCU
1063a8cbcd92SRussell King	bool
1064a8cbcd92SRussell King	depends on SMP
1065a8cbcd92SRussell King	help
1066a8cbcd92SRussell King	  This option enables support for the ARM system coherency unit
1067a8cbcd92SRussell King
1068f32f4ce2SRussell Kingconfig HAVE_ARM_TWD
1069f32f4ce2SRussell King	bool
1070f32f4ce2SRussell King	depends on SMP
1071f32f4ce2SRussell King	help
1072f32f4ce2SRussell King	  This options enables support for the ARM timer and watchdog unit
1073f32f4ce2SRussell King
10748d5796d2SLennert Buytenhekchoice
10758d5796d2SLennert Buytenhek	prompt "Memory split"
10768d5796d2SLennert Buytenhek	default VMSPLIT_3G
10778d5796d2SLennert Buytenhek	help
10788d5796d2SLennert Buytenhek	  Select the desired split between kernel and user memory.
10798d5796d2SLennert Buytenhek
10808d5796d2SLennert Buytenhek	  If you are not absolutely sure what you are doing, leave this
10818d5796d2SLennert Buytenhek	  option alone!
10828d5796d2SLennert Buytenhek
10838d5796d2SLennert Buytenhek	config VMSPLIT_3G
10848d5796d2SLennert Buytenhek		bool "3G/1G user/kernel split"
10858d5796d2SLennert Buytenhek	config VMSPLIT_2G
10868d5796d2SLennert Buytenhek		bool "2G/2G user/kernel split"
10878d5796d2SLennert Buytenhek	config VMSPLIT_1G
10888d5796d2SLennert Buytenhek		bool "1G/3G user/kernel split"
10898d5796d2SLennert Buytenhekendchoice
10908d5796d2SLennert Buytenhek
10918d5796d2SLennert Buytenhekconfig PAGE_OFFSET
10928d5796d2SLennert Buytenhek	hex
10938d5796d2SLennert Buytenhek	default 0x40000000 if VMSPLIT_1G
10948d5796d2SLennert Buytenhek	default 0x80000000 if VMSPLIT_2G
10958d5796d2SLennert Buytenhek	default 0xC0000000
10968d5796d2SLennert Buytenhek
10971da177e4SLinus Torvaldsconfig NR_CPUS
10981da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
10991da177e4SLinus Torvalds	range 2 32
11001da177e4SLinus Torvalds	depends on SMP
11011da177e4SLinus Torvalds	default "4"
11021da177e4SLinus Torvalds
1103a054a811SRussell Kingconfig HOTPLUG_CPU
1104a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1105a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
1106a054a811SRussell King	help
1107a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
1108a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
1109a054a811SRussell King
111037ee16aeSRussell Kingconfig LOCAL_TIMERS
111137ee16aeSRussell King	bool "Use local timer interrupts"
111242578c82SRussell King	depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1113850265e8SSrinidhi Kasagar		REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
111437ee16aeSRussell King	default y
1115850265e8SSrinidhi Kasagar	select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
111637ee16aeSRussell King	help
111737ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
111837ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
111937ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
112037ee16aeSRussell King	  "thundering herd" at every timer tick.
112137ee16aeSRussell King
1122d45a398fSUwe Kleine-Königsource kernel/Kconfig.preempt
11231da177e4SLinus Torvalds
1124f8065813SRussell Kingconfig HZ
1125f8065813SRussell King	int
1126f8065813SRussell King	default 128 if ARCH_L7200
1127170f4e42SKukjin Kim	default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1128bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
11295248c657SDavid Brownell	default AT91_TIMER_HZ if ARCH_AT91
1130f8065813SRussell King	default 100
1131f8065813SRussell King
113216c79651SCatalin Marinasconfig THUMB2_KERNEL
113316c79651SCatalin Marinas	bool "Compile the kernel in Thumb-2 mode"
113416c79651SCatalin Marinas	depends on CPU_V7 && EXPERIMENTAL
113516c79651SCatalin Marinas	select AEABI
113616c79651SCatalin Marinas	select ARM_ASM_UNIFIED
113716c79651SCatalin Marinas	help
113816c79651SCatalin Marinas	  By enabling this option, the kernel will be compiled in
113916c79651SCatalin Marinas	  Thumb-2 mode. A compiler/assembler that understand the unified
114016c79651SCatalin Marinas	  ARM-Thumb syntax is needed.
114116c79651SCatalin Marinas
114216c79651SCatalin Marinas	  If unsure, say N.
114316c79651SCatalin Marinas
11440becb088SCatalin Marinasconfig ARM_ASM_UNIFIED
11450becb088SCatalin Marinas	bool
11460becb088SCatalin Marinas
1147704bdda0SNicolas Pitreconfig AEABI
1148704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
1149704bdda0SNicolas Pitre	help
1150704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
1151704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
1152704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
1153704bdda0SNicolas Pitre
1154704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
1155704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
1156704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
1157704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
1158704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
1159704bdda0SNicolas Pitre
1160704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
1161704bdda0SNicolas Pitre
11626c90c872SNicolas Pitreconfig OABI_COMPAT
1163a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
116461c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
11656c90c872SNicolas Pitre	default y
11666c90c872SNicolas Pitre	help
11676c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
11686c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
11696c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
11706c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
11716c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
11726c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
11736c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
11746c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
11756c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
11766c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
11776c90c872SNicolas Pitre	  at all). If in doubt say Y.
11786c90c872SNicolas Pitre
1179eb33575cSMel Gormanconfig ARCH_HAS_HOLES_MEMORYMODEL
1180e80d6a24SMel Gorman	bool
1181e80d6a24SMel Gorman
118207a2f737SRussell King# Discontigmem is deprecated
11833f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
11841da177e4SLinus Torvalds	bool
11851da177e4SLinus Torvalds
118605944d74SRussell Kingconfig ARCH_SPARSEMEM_ENABLE
118705944d74SRussell King	bool
118805944d74SRussell King
118907a2f737SRussell Kingconfig ARCH_SPARSEMEM_DEFAULT
119007a2f737SRussell King	def_bool ARCH_SPARSEMEM_ENABLE
119107a2f737SRussell King
119205944d74SRussell Kingconfig ARCH_SELECT_MEMORY_MODEL
119307a2f737SRussell King	def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
119405944d74SRussell King
1195c80d79d7SYasunori Gotoconfig NODES_SHIFT
1196c80d79d7SYasunori Goto	int
1197c80d79d7SYasunori Goto	default "4" if ARCH_LH7A40X
1198c80d79d7SYasunori Goto	default "2"
1199c80d79d7SYasunori Goto	depends on NEED_MULTIPLE_NODES
1200c80d79d7SYasunori Goto
1201053a96caSNicolas Pitreconfig HIGHMEM
1202053a96caSNicolas Pitre	bool "High Memory Support (EXPERIMENTAL)"
1203053a96caSNicolas Pitre	depends on MMU && EXPERIMENTAL
1204053a96caSNicolas Pitre	help
1205053a96caSNicolas Pitre	  The address space of ARM processors is only 4 Gigabytes large
1206053a96caSNicolas Pitre	  and it has to accommodate user address space, kernel address
1207053a96caSNicolas Pitre	  space as well as some memory mapped IO. That means that, if you
1208053a96caSNicolas Pitre	  have a large amount of physical memory and/or IO, not all of the
1209053a96caSNicolas Pitre	  memory can be "permanently mapped" by the kernel. The physical
1210053a96caSNicolas Pitre	  memory that is not permanently mapped is called "high memory".
1211053a96caSNicolas Pitre
1212053a96caSNicolas Pitre	  Depending on the selected kernel/user memory split, minimum
1213053a96caSNicolas Pitre	  vmalloc space and actual amount of RAM, you may not need this
1214053a96caSNicolas Pitre	  option which should result in a slightly faster kernel.
1215053a96caSNicolas Pitre
1216053a96caSNicolas Pitre	  If unsure, say n.
1217053a96caSNicolas Pitre
121865cec8e3SRussell Kingconfig HIGHPTE
121965cec8e3SRussell King	bool "Allocate 2nd-level pagetables from highmem"
122065cec8e3SRussell King	depends on HIGHMEM
122165cec8e3SRussell King	depends on !OUTER_CACHE
122265cec8e3SRussell King
12233f22ab27SDave Hansensource "mm/Kconfig"
12243f22ab27SDave Hansen
12251da177e4SLinus Torvaldsconfig LEDS
12261da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
1227e055d5bfSAdrian Bunk	depends on ARCH_CDB89712 || ARCH_EBSA110 || \
12288c8fdbc9SSascha Hauer		   ARCH_EBSA285 || ARCH_INTEGRATOR || \
12291da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
12301da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
123173a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
123225329671SJürgen Schindele		   ARCH_AT91 || ARCH_DAVINCI || \
1233ff3042fbSColin Tuckley		   ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
12341da177e4SLinus Torvalds	help
12351da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
12361da177e4SLinus Torvalds	  to provide useful information about your current system status.
12371da177e4SLinus Torvalds
12381da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
12391da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
12401da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
12411da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
12421da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
12431da177e4SLinus Torvalds	  system, but the driver will do nothing.
12441da177e4SLinus Torvalds
12451da177e4SLinus Torvaldsconfig LEDS_TIMER
12461da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1247eebdf7d7SDavid Brownell			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1248eebdf7d7SDavid Brownell			    || MACH_OMAP_PERSEUS2
12491da177e4SLinus Torvalds	depends on LEDS
12500567a0c0SKevin Hilman	depends on !GENERIC_CLOCKEVENTS
12511da177e4SLinus Torvalds	default y if ARCH_EBSA110
12521da177e4SLinus Torvalds	help
12531da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
12541da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
12551da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
12561da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
12571da177e4SLinus Torvalds	  debugging unstable kernels.
12581da177e4SLinus Torvalds
12591da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
12601da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
12611da177e4SLinus Torvalds	  will overrule the CPU usage LED.
12621da177e4SLinus Torvalds
12631da177e4SLinus Torvaldsconfig LEDS_CPU
12641da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1265eebdf7d7SDavid Brownell			!ARCH_OMAP) \
1266eebdf7d7SDavid Brownell			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1267eebdf7d7SDavid Brownell			|| MACH_OMAP_PERSEUS2
12681da177e4SLinus Torvalds	depends on LEDS
12691da177e4SLinus Torvalds	help
12701da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
12711da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
12721da177e4SLinus Torvalds	  is not currently executing.
12731da177e4SLinus Torvalds
12741da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
12751da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
12761da177e4SLinus Torvalds	  will overrule the CPU usage LED.
12771da177e4SLinus Torvalds
12781da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
12791da177e4SLinus Torvalds	bool
1280f12d0d7cSHyok S. Choi	depends on CPU_CP15_MMU
12811da177e4SLinus Torvalds	default y if !ARCH_EBSA110
12821da177e4SLinus Torvalds	help
12831da177e4SLinus Torvalds	  ARM processors cannot fetch/store information which is not
12841da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
12851da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
12861da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
12871da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
12881da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
12891da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
12901da177e4SLinus Torvalds
129139ec58f3SLennert Buytenhekconfig UACCESS_WITH_MEMCPY
129239ec58f3SLennert Buytenhek	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
129339ec58f3SLennert Buytenhek	depends on MMU && EXPERIMENTAL
129439ec58f3SLennert Buytenhek	default y if CPU_FEROCEON
129539ec58f3SLennert Buytenhek	help
129639ec58f3SLennert Buytenhek	  Implement faster copy_to_user and clear_user methods for CPU
129739ec58f3SLennert Buytenhek	  cores where a 8-word STM instruction give significantly higher
129839ec58f3SLennert Buytenhek	  memory write throughput than a sequence of individual 32bit stores.
129939ec58f3SLennert Buytenhek
130039ec58f3SLennert Buytenhek	  A possible side effect is a slight increase in scheduling latency
130139ec58f3SLennert Buytenhek	  between threads sharing the same address space if they invoke
130239ec58f3SLennert Buytenhek	  such copy operations with large buffers.
130339ec58f3SLennert Buytenhek
130439ec58f3SLennert Buytenhek	  However, if the CPU data cache is using a write-allocate mode,
130539ec58f3SLennert Buytenhek	  this option is unlikely to provide any performance gain.
130639ec58f3SLennert Buytenhek
13071da177e4SLinus Torvaldsendmenu
13081da177e4SLinus Torvalds
13091da177e4SLinus Torvaldsmenu "Boot options"
13101da177e4SLinus Torvalds
13111da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
13121da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
13131da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
13141da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
13151da177e4SLinus Torvalds	default "0"
13161da177e4SLinus Torvalds	help
13171da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
13181da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
13191da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
13201da177e4SLinus Torvalds	  value in their defconfig file.
13211da177e4SLinus Torvalds
13221da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
13231da177e4SLinus Torvalds
13241da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
13251da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
13261da177e4SLinus Torvalds	default "0"
13271da177e4SLinus Torvalds	help
1328f8c440b2SDan Fandrich	  The base address of an area of read/write memory in the target
1329f8c440b2SDan Fandrich	  for the ROM-able zImage which must be available while the
1330f8c440b2SDan Fandrich	  decompressor is running. It must be large enough to hold the
1331f8c440b2SDan Fandrich	  entire decompressed kernel plus an additional 128 KiB.
1332f8c440b2SDan Fandrich	  Platforms which normally make use of ROM-able zImage formats
1333f8c440b2SDan Fandrich	  normally set this to a suitable value in their defconfig file.
13341da177e4SLinus Torvalds
13351da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
13361da177e4SLinus Torvalds
13371da177e4SLinus Torvaldsconfig ZBOOT_ROM
13381da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
13391da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
13401da177e4SLinus Torvalds	help
13411da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
13421da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
13431da177e4SLinus Torvalds
13441da177e4SLinus Torvaldsconfig CMDLINE
13451da177e4SLinus Torvalds	string "Default kernel command string"
13461da177e4SLinus Torvalds	default ""
13471da177e4SLinus Torvalds	help
13481da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
13491da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
13501da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
13511da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
13521da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
13531da177e4SLinus Torvalds
13541da177e4SLinus Torvaldsconfig XIP_KERNEL
13551da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
13561da177e4SLinus Torvalds	depends on !ZBOOT_ROM
13571da177e4SLinus Torvalds	help
13581da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
13591da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
13601da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
13611da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
13621da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
13631da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
13641da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
13651da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
13661da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
13671da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
13681da177e4SLinus Torvalds
13691da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
13701da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
13711da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
13721da177e4SLinus Torvalds
13731da177e4SLinus Torvalds	  If unsure, say N.
13741da177e4SLinus Torvalds
13751da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
13761da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
13771da177e4SLinus Torvalds	depends on XIP_KERNEL
13781da177e4SLinus Torvalds	default "0x00080000"
13791da177e4SLinus Torvalds	help
13801da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
13811da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
13821da177e4SLinus Torvalds	  own flash usage.
13831da177e4SLinus Torvalds
1384c587e4a6SRichard Purdieconfig KEXEC
1385c587e4a6SRichard Purdie	bool "Kexec system call (EXPERIMENTAL)"
1386c587e4a6SRichard Purdie	depends on EXPERIMENTAL
1387c587e4a6SRichard Purdie	help
1388c587e4a6SRichard Purdie	  kexec is a system call that implements the ability to shutdown your
1389c587e4a6SRichard Purdie	  current kernel, and to start another kernel.  It is like a reboot
139001dd2fbfSMatt LaPlante	  but it is independent of the system firmware.   And like a reboot
1391c587e4a6SRichard Purdie	  you can start any kernel with it, not just Linux.
1392c587e4a6SRichard Purdie
1393c587e4a6SRichard Purdie	  It is an ongoing process to be certain the hardware in a machine
1394c587e4a6SRichard Purdie	  is properly shutdown, so do not be surprised if this code does not
1395c587e4a6SRichard Purdie	  initially work for you.  It may help to enable device hotplugging
1396c587e4a6SRichard Purdie	  support.
1397c587e4a6SRichard Purdie
13984cd9d6f7SRichard Purdieconfig ATAGS_PROC
13994cd9d6f7SRichard Purdie	bool "Export atags in procfs"
1400b98d7291SUli Luckas	depends on KEXEC
1401b98d7291SUli Luckas	default y
14024cd9d6f7SRichard Purdie	help
14034cd9d6f7SRichard Purdie	  Should the atags used to boot the kernel be exported in an "atags"
14044cd9d6f7SRichard Purdie	  file in procfs. Useful with kexec.
14054cd9d6f7SRichard Purdie
14061da177e4SLinus Torvaldsendmenu
14071da177e4SLinus Torvalds
1408ac9d7efcSRussell Kingmenu "CPU Power Management"
14091da177e4SLinus Torvalds
141089c52ed4SBen Dooksif ARCH_HAS_CPUFREQ
14111da177e4SLinus Torvalds
14121da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
14131da177e4SLinus Torvalds
14141da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
14151da177e4SLinus Torvalds	bool
14161da177e4SLinus Torvalds
14171da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
14181da177e4SLinus Torvalds	bool
14191da177e4SLinus Torvalds
14201da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
14211da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
14221da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
14231da177e4SLinus Torvalds	default y
14241da177e4SLinus Torvalds	help
14251da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
14261da177e4SLinus Torvalds
14271da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
14281da177e4SLinus Torvalds
14291da177e4SLinus Torvalds	  If in doubt, say Y.
14301da177e4SLinus Torvalds
14319e2697ffSRussell Kingconfig CPU_FREQ_PXA
14329e2697ffSRussell King	bool
14339e2697ffSRussell King	depends on CPU_FREQ && ARCH_PXA && PXA25x
14349e2697ffSRussell King	default y
14359e2697ffSRussell King	select CPU_FREQ_DEFAULT_GOV_USERSPACE
14369e2697ffSRussell King
1437b3748dddSMark Brownconfig CPU_FREQ_S3C64XX
1438b3748dddSMark Brown	bool "CPUfreq support for Samsung S3C64XX CPUs"
1439b3748dddSMark Brown	depends on CPU_FREQ && CPU_S3C6410
1440b3748dddSMark Brown
14419d56c02aSBen Dooksconfig CPU_FREQ_S3C
14429d56c02aSBen Dooks	bool
14439d56c02aSBen Dooks	help
14449d56c02aSBen Dooks	  Internal configuration node for common cpufreq on Samsung SoC
14459d56c02aSBen Dooks
14469d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX
14479d56c02aSBen Dooks	bool "CPUfreq driver for Samsung S3C24XX series CPUs"
14489d56c02aSBen Dooks	depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
14499d56c02aSBen Dooks	select CPU_FREQ_S3C
14509d56c02aSBen Dooks	help
14519d56c02aSBen Dooks	  This enables the CPUfreq driver for the Samsung S3C24XX family
14529d56c02aSBen Dooks	  of CPUs.
14539d56c02aSBen Dooks
14549d56c02aSBen Dooks	  For details, take a look at <file:Documentation/cpu-freq>.
14559d56c02aSBen Dooks
14569d56c02aSBen Dooks	  If in doubt, say N.
14579d56c02aSBen Dooks
14589d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_PLL
14599d56c02aSBen Dooks	bool "Support CPUfreq changing of PLL frequency"
14609d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
14619d56c02aSBen Dooks	help
14629d56c02aSBen Dooks	  Compile in support for changing the PLL frequency from the
14639d56c02aSBen Dooks	  S3C24XX series CPUfreq driver. The PLL takes time to settle
14649d56c02aSBen Dooks	  after a frequency change, so by default it is not enabled.
14659d56c02aSBen Dooks
14669d56c02aSBen Dooks	  This also means that the PLL tables for the selected CPU(s) will
14679d56c02aSBen Dooks	  be built which may increase the size of the kernel image.
14689d56c02aSBen Dooks
14699d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_DEBUG
14709d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver core"
14719d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
14729d56c02aSBen Dooks	help
14739d56c02aSBen Dooks	  Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
14749d56c02aSBen Dooks
14759d56c02aSBen Dooksconfig CPU_FREQ_S3C24XX_IODEBUG
14769d56c02aSBen Dooks	bool "Debug CPUfreq Samsung driver IO timing"
14779d56c02aSBen Dooks	depends on CPU_FREQ_S3C24XX
14789d56c02aSBen Dooks	help
14799d56c02aSBen Dooks	  Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
14809d56c02aSBen Dooks
1481e6d197a6SBen Dooksconfig CPU_FREQ_S3C24XX_DEBUGFS
1482e6d197a6SBen Dooks	bool "Export debugfs for CPUFreq"
1483e6d197a6SBen Dooks	depends on CPU_FREQ_S3C24XX && DEBUG_FS
1484e6d197a6SBen Dooks	help
1485e6d197a6SBen Dooks	  Export status information via debugfs.
1486e6d197a6SBen Dooks
14871da177e4SLinus Torvaldsendif
14881da177e4SLinus Torvalds
1489ac9d7efcSRussell Kingsource "drivers/cpuidle/Kconfig"
1490ac9d7efcSRussell King
1491ac9d7efcSRussell Kingendmenu
1492ac9d7efcSRussell King
14931da177e4SLinus Torvaldsmenu "Floating point emulation"
14941da177e4SLinus Torvalds
14951da177e4SLinus Torvaldscomment "At least one emulation must be selected"
14961da177e4SLinus Torvalds
14971da177e4SLinus Torvaldsconfig FPE_NWFPE
14981da177e4SLinus Torvalds	bool "NWFPE math emulation"
14998993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
15001da177e4SLinus Torvalds	---help---
15011da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
15021da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
15031da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
15041da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
15051da177e4SLinus Torvalds
15061da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
15071da177e4SLinus Torvalds	  early in the bootup.
15081da177e4SLinus Torvalds
15091da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
15101da177e4SLinus Torvalds	bool "Support extended precision"
1511bedf142bSLennert Buytenhek	depends on FPE_NWFPE
15121da177e4SLinus Torvalds	help
15131da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
15141da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
15151da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
15161da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
15171da177e4SLinus Torvalds	  floating point emulator without any good reason.
15181da177e4SLinus Torvalds
15191da177e4SLinus Torvalds	  You almost surely want to say N here.
15201da177e4SLinus Torvalds
15211da177e4SLinus Torvaldsconfig FPE_FASTFPE
15221da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
15238993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
15241da177e4SLinus Torvalds	---help---
15251da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
15261da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
15271da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
15281da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
15291da177e4SLinus Torvalds
15301da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
15311da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
15321da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
15331da177e4SLinus Torvalds	  choose NWFPE.
15341da177e4SLinus Torvalds
15351da177e4SLinus Torvaldsconfig VFP
15361da177e4SLinus Torvalds	bool "VFP-format floating point maths"
1537c00d4ffdSRussell King	depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
15381da177e4SLinus Torvalds	help
15391da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
15401da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
15411da177e4SLinus Torvalds
15421da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
15431da177e4SLinus Torvalds	  release notes and additional status information.
15441da177e4SLinus Torvalds
15451da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
15461da177e4SLinus Torvalds
154725ebee02SCatalin Marinasconfig VFPv3
154825ebee02SCatalin Marinas	bool
154925ebee02SCatalin Marinas	depends on VFP
155025ebee02SCatalin Marinas	default y if CPU_V7
155125ebee02SCatalin Marinas
1552b5872db4SCatalin Marinasconfig NEON
1553b5872db4SCatalin Marinas	bool "Advanced SIMD (NEON) Extension support"
1554b5872db4SCatalin Marinas	depends on VFPv3 && CPU_V7
1555b5872db4SCatalin Marinas	help
1556b5872db4SCatalin Marinas	  Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1557b5872db4SCatalin Marinas	  Extension.
1558b5872db4SCatalin Marinas
15591da177e4SLinus Torvaldsendmenu
15601da177e4SLinus Torvalds
15611da177e4SLinus Torvaldsmenu "Userspace binary formats"
15621da177e4SLinus Torvalds
15631da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
15641da177e4SLinus Torvalds
15651da177e4SLinus Torvaldsconfig ARTHUR
15661da177e4SLinus Torvalds	tristate "RISC OS personality"
1567704bdda0SNicolas Pitre	depends on !AEABI
15681da177e4SLinus Torvalds	help
15691da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
15701da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
15711da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
15721da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
15731da177e4SLinus Torvalds	  will be called arthur).
15741da177e4SLinus Torvalds
15751da177e4SLinus Torvaldsendmenu
15761da177e4SLinus Torvalds
15771da177e4SLinus Torvaldsmenu "Power management options"
15781da177e4SLinus Torvalds
1579eceab4acSRussell Kingsource "kernel/power/Kconfig"
15801da177e4SLinus Torvalds
1581f4cb5700SJohannes Bergconfig ARCH_SUSPEND_POSSIBLE
1582f4cb5700SJohannes Berg	def_bool y
1583f4cb5700SJohannes Berg
15841da177e4SLinus Torvaldsendmenu
15851da177e4SLinus Torvalds
1586d5950b43SSam Ravnborgsource "net/Kconfig"
1587d5950b43SSam Ravnborg
1588ac25150fSUwe Kleine-Königsource "drivers/Kconfig"
15891da177e4SLinus Torvalds
15901da177e4SLinus Torvaldssource "fs/Kconfig"
15911da177e4SLinus Torvalds
15921da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
15931da177e4SLinus Torvalds
15941da177e4SLinus Torvaldssource "security/Kconfig"
15951da177e4SLinus Torvalds
15961da177e4SLinus Torvaldssource "crypto/Kconfig"
15971da177e4SLinus Torvalds
15981da177e4SLinus Torvaldssource "lib/Kconfig"
1599