xref: /linux/arch/arm/Kconfig (revision c4713074375c61f939310b04e92090afe29810dc)
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
111da177e4SLinus Torvalds	help
121da177e4SLinus Torvalds	  The ARM series is a line of low-power-consumption RISC chip designs
13f6c8965aSMartin Michlmayr	  licensed by ARM Ltd and targeted at embedded applications and
141da177e4SLinus Torvalds	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
151da177e4SLinus Torvalds	  manufactured, but legacy ARM-based PC hardware remains popular in
161da177e4SLinus Torvalds	  Europe.  There is an ARM Linux project with a web page at
171da177e4SLinus Torvalds	  <http://www.arm.linux.org.uk/>.
181da177e4SLinus Torvalds
191da177e4SLinus Torvaldsconfig MMU
201da177e4SLinus Torvalds	bool
211da177e4SLinus Torvalds	default y
221da177e4SLinus Torvalds
231da177e4SLinus Torvaldsconfig EISA
241da177e4SLinus Torvalds	bool
251da177e4SLinus Torvalds	---help---
261da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
271da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
281da177e4SLinus Torvalds
291da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
301da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
311da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
321da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
331da177e4SLinus Torvalds
341da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
351da177e4SLinus Torvalds
361da177e4SLinus Torvalds	  Otherwise, say N.
371da177e4SLinus Torvalds
381da177e4SLinus Torvaldsconfig SBUS
391da177e4SLinus Torvalds	bool
401da177e4SLinus Torvalds
411da177e4SLinus Torvaldsconfig MCA
421da177e4SLinus Torvalds	bool
431da177e4SLinus Torvalds	help
441da177e4SLinus Torvalds	  MicroChannel Architecture is found in some IBM PS/2 machines and
451da177e4SLinus Torvalds	  laptops.  It is a bus system similar to PCI or ISA. See
461da177e4SLinus Torvalds	  <file:Documentation/mca.txt> (and especially the web page given
471da177e4SLinus Torvalds	  there) before attempting to build an MCA bus kernel.
481da177e4SLinus Torvalds
491da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK
501da177e4SLinus Torvalds	bool
511da177e4SLinus Torvalds	default y
521da177e4SLinus Torvalds
531da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
541da177e4SLinus Torvalds	bool
551da177e4SLinus Torvalds
561da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
571da177e4SLinus Torvalds	bool
581da177e4SLinus Torvalds	default y
591da177e4SLinus Torvalds
601da177e4SLinus Torvaldsconfig GENERIC_BUST_SPINLOCK
611da177e4SLinus Torvalds	bool
621da177e4SLinus Torvalds
63a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
64a08b6b79Sviro@ZenIV.linux.org.uk	bool
65a08b6b79Sviro@ZenIV.linux.org.uk
661da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
671da177e4SLinus Torvalds	bool
681da177e4SLinus Torvalds
691da177e4SLinus Torvaldsconfig FIQ
701da177e4SLinus Torvalds	bool
711da177e4SLinus Torvalds
72034d2f5aSAl Viroconfig ARCH_MTD_XIP
73034d2f5aSAl Viro	bool
74034d2f5aSAl Viro
751da177e4SLinus Torvaldssource "init/Kconfig"
761da177e4SLinus Torvalds
771da177e4SLinus Torvaldsmenu "System Type"
781da177e4SLinus Torvalds
791da177e4SLinus Torvaldschoice
801da177e4SLinus Torvalds	prompt "ARM system type"
816a0e2430SCatalin Marinas	default ARCH_VERSATILE
821da177e4SLinus Torvalds
831da177e4SLinus Torvaldsconfig ARCH_CLPS7500
841da177e4SLinus Torvalds	bool "Cirrus-CL-PS7500FE"
851da177e4SLinus Torvalds	select TIMER_ACORN
86f7e68bbfSRussell King	select ISA
87f999b8bdSMartin Michlmayr	help
88f999b8bdSMartin Michlmayr	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
891da177e4SLinus Torvalds
901da177e4SLinus Torvaldsconfig ARCH_CLPS711X
911da177e4SLinus Torvalds	bool "CLPS711x/EP721x-based"
92f999b8bdSMartin Michlmayr	help
93f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
941da177e4SLinus Torvalds
951da177e4SLinus Torvaldsconfig ARCH_CO285
961da177e4SLinus Torvalds	bool "Co-EBSA285"
971da177e4SLinus Torvalds	select FOOTBRIDGE
981da177e4SLinus Torvalds	select FOOTBRIDGE_ADDIN
99f999b8bdSMartin Michlmayr	help
100f999b8bdSMartin Michlmayr	  Support for Intel's EBSA285 companion chip.
1011da177e4SLinus Torvalds
1021da177e4SLinus Torvaldsconfig ARCH_EBSA110
1031da177e4SLinus Torvalds	bool "EBSA-110"
104f7e68bbfSRussell King	select ISA
1051da177e4SLinus Torvalds	help
1061da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
107f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
1081da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
1091da177e4SLinus Torvalds	  parallel port.
1101da177e4SLinus Torvalds
111e7736d47SLennert Buytenhekconfig ARCH_EP93XX
112e7736d47SLennert Buytenhek	bool "EP93xx-based"
113e7736d47SLennert Buytenhek	select ARM_AMBA
114e7736d47SLennert Buytenhek	select ARM_VIC
115e7736d47SLennert Buytenhek	help
116e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
117e7736d47SLennert Buytenhek
1181da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
1191da177e4SLinus Torvalds	bool "FootBridge"
1201da177e4SLinus Torvalds	select FOOTBRIDGE
121f999b8bdSMartin Michlmayr	help
122f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
123f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1241da177e4SLinus Torvalds
1251da177e4SLinus Torvaldsconfig ARCH_INTEGRATOR
1261da177e4SLinus Torvalds	bool "Integrator"
1271da177e4SLinus Torvalds	select ARM_AMBA
1281da177e4SLinus Torvalds	select ICST525
129f999b8bdSMartin Michlmayr	help
130f999b8bdSMartin Michlmayr	  Support for ARM's Integrator platform.
1311da177e4SLinus Torvalds
1321da177e4SLinus Torvaldsconfig ARCH_IOP3XX
1331da177e4SLinus Torvalds	bool "IOP3xx-based"
134f7e68bbfSRussell King	select PCI
135f999b8bdSMartin Michlmayr	help
136f999b8bdSMartin Michlmayr	  Support for Intel's IOP3XX (XScale) family of processors.
1371da177e4SLinus Torvalds
1381da177e4SLinus Torvaldsconfig ARCH_IXP4XX
1391da177e4SLinus Torvalds	bool "IXP4xx-based"
1401da177e4SLinus Torvalds	select DMABOUNCE
141f7e68bbfSRussell King	select PCI
142f999b8bdSMartin Michlmayr	help
143f999b8bdSMartin Michlmayr	  Support for Intel's IXP4XX (XScale) family of processors.
1441da177e4SLinus Torvalds
1451da177e4SLinus Torvaldsconfig ARCH_IXP2000
1461da177e4SLinus Torvalds	bool "IXP2400/2800-based"
147f7e68bbfSRussell King	select PCI
148f999b8bdSMartin Michlmayr	help
149f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
1501da177e4SLinus Torvalds
151*c4713074SLennert Buytenhekconfig ARCH_IXP23XX
152*c4713074SLennert Buytenhek 	bool "IXP23XX-based"
153*c4713074SLennert Buytenhek 	select PCI
154*c4713074SLennert Buytenhek	help
155*c4713074SLennert Buytenhek	  Support for Intel's IXP23xx (XScale) family of processors.
156*c4713074SLennert Buytenhek
1571da177e4SLinus Torvaldsconfig ARCH_L7200
1581da177e4SLinus Torvalds	bool "LinkUp-L7200"
1591da177e4SLinus Torvalds	select FIQ
1601da177e4SLinus Torvalds	help
1611da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
1621da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
1631da177e4SLinus Torvalds	  Information on this board can be obtained at:
1641da177e4SLinus Torvalds
1651da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
1661da177e4SLinus Torvalds
1671da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
1681da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
1691da177e4SLinus Torvalds
1701da177e4SLinus Torvaldsconfig ARCH_PXA
1711da177e4SLinus Torvalds	bool "PXA2xx-based"
172034d2f5aSAl Viro	select ARCH_MTD_XIP
173f999b8bdSMartin Michlmayr	help
174f999b8bdSMartin Michlmayr	  Support for Intel's PXA2XX processor line.
1751da177e4SLinus Torvalds
1761da177e4SLinus Torvaldsconfig ARCH_RPC
1771da177e4SLinus Torvalds	bool "RiscPC"
1781da177e4SLinus Torvalds	select ARCH_ACORN
1791da177e4SLinus Torvalds	select FIQ
1801da177e4SLinus Torvalds	select TIMER_ACORN
181a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
182065909b9SRussell King	select ISA_DMA_API
1831da177e4SLinus Torvalds	help
1841da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
1851da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
1861da177e4SLinus Torvalds
1871da177e4SLinus Torvaldsconfig ARCH_SA1100
1881da177e4SLinus Torvalds	bool "SA1100-based"
189f7e68bbfSRussell King	select ISA
1903cd9e19eSRussell King	select ARCH_DISCONTIGMEM_ENABLE
191034d2f5aSAl Viro	select ARCH_MTD_XIP
192f999b8bdSMartin Michlmayr	help
193f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
1941da177e4SLinus Torvalds
1951da177e4SLinus Torvaldsconfig ARCH_S3C2410
1961da177e4SLinus Torvalds	bool "Samsung S3C2410"
1971da177e4SLinus Torvalds	help
1981da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
1991da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
200f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
2011da177e4SLinus Torvalds
2021da177e4SLinus Torvaldsconfig ARCH_SHARK
2031da177e4SLinus Torvalds	bool "Shark"
204f7e68bbfSRussell King	select ISA
205f7e68bbfSRussell King	select ISA_DMA
206f7e68bbfSRussell King	select PCI
207f999b8bdSMartin Michlmayr	help
208f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
209f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
2101da177e4SLinus Torvalds
2111da177e4SLinus Torvaldsconfig ARCH_LH7A40X
2121da177e4SLinus Torvalds	bool "Sharp LH7A40X"
2131da177e4SLinus Torvalds	help
2141da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
2151da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
2161da177e4SLinus Torvalds	  core with a wide array of integrated devices for
2171da177e4SLinus Torvalds	  hand-held and low-power applications.
2181da177e4SLinus Torvalds
2191da177e4SLinus Torvaldsconfig ARCH_OMAP
2201da177e4SLinus Torvalds	bool "TI OMAP"
221f999b8bdSMartin Michlmayr	help
222f999b8bdSMartin Michlmayr	  Support for TI's OMAP platform (OMAP1 and OMAP2).
2231da177e4SLinus Torvalds
2241da177e4SLinus Torvaldsconfig ARCH_VERSATILE
2251da177e4SLinus Torvalds	bool "Versatile"
2261da177e4SLinus Torvalds	select ARM_AMBA
227fa0fe48fSRussell King	select ARM_VIC
2281da177e4SLinus Torvalds	select ICST307
2291da177e4SLinus Torvalds	help
2301da177e4SLinus Torvalds	  This enables support for ARM Ltd Versatile board.
2311da177e4SLinus Torvalds
2328ad68bbfSCatalin Marinasconfig ARCH_REALVIEW
2338ad68bbfSCatalin Marinas	bool "RealView"
2348ad68bbfSCatalin Marinas	select ARM_AMBA
2358ad68bbfSCatalin Marinas	select ICST307
2368ad68bbfSCatalin Marinas	help
2378ad68bbfSCatalin Marinas	  This enables support for ARM Ltd RealView boards.
2388ad68bbfSCatalin Marinas
2391da177e4SLinus Torvaldsconfig ARCH_IMX
2401da177e4SLinus Torvalds	bool "IMX"
241f999b8bdSMartin Michlmayr	help
242f999b8bdSMartin Michlmayr	  Support for Motorola's i.MX family of processors (MX1, MXL).
2431da177e4SLinus Torvalds
2441da177e4SLinus Torvaldsconfig ARCH_H720X
2451da177e4SLinus Torvalds	bool "Hynix-HMS720x-based"
246065909b9SRussell King	select ISA_DMA_API
2471da177e4SLinus Torvalds	help
2481da177e4SLinus Torvalds	  This enables support for systems based on the Hynix HMS720x
2491da177e4SLinus Torvalds
250038c5b60SBellido Nicolasconfig ARCH_AAEC2000
251038c5b60SBellido Nicolas	bool "Agilent AAEC-2000 based"
252049eb329SBellido Nicolas	select ARM_AMBA
253038c5b60SBellido Nicolas	help
254038c5b60SBellido Nicolas	  This enables support for systems based on the Agilent AAEC-2000
255038c5b60SBellido Nicolas
25673a59c1cSSAN Peopleconfig ARCH_AT91RM9200
25773a59c1cSSAN People	bool "AT91RM9200"
25873a59c1cSSAN People	help
259f999b8bdSMartin Michlmayr	  Say Y here if you intend to run this kernel on an Atmel
260f999b8bdSMartin Michlmayr	  AT91RM9200-based board.
26173a59c1cSSAN People
2621da177e4SLinus Torvaldsendchoice
2631da177e4SLinus Torvalds
2641da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
2651da177e4SLinus Torvalds
266e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
267e7736d47SLennert Buytenhek
2681da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
2691da177e4SLinus Torvalds
2701da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
2711da177e4SLinus Torvalds
2721da177e4SLinus Torvaldssource "arch/arm/mach-iop3xx/Kconfig"
2731da177e4SLinus Torvalds
2741da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
2751da177e4SLinus Torvalds
2761da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
2771da177e4SLinus Torvalds
278*c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig"
279*c4713074SLennert Buytenhek
2801da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig"
2811da177e4SLinus Torvalds
2821da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig"
2831da177e4SLinus Torvalds
284d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
285d48af15eSTony Lindgren
286d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
2871da177e4SLinus Torvalds
2881dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
2891dbae815STony Lindgren
2901da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
2911da177e4SLinus Torvalds
2921da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig"
2931da177e4SLinus Torvalds
2941da177e4SLinus Torvaldssource "arch/arm/mach-imx/Kconfig"
2951da177e4SLinus Torvalds
2961da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig"
2971da177e4SLinus Torvalds
2981da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
2991da177e4SLinus Torvalds
300038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig"
301038c5b60SBellido Nicolas
3028ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig"
3038ad68bbfSCatalin Marinas
30473a59c1cSSAN Peoplesource "arch/arm/mach-at91rm9200/Kconfig"
30573a59c1cSSAN People
3061da177e4SLinus Torvalds# Definitions to make life easier
3071da177e4SLinus Torvaldsconfig ARCH_ACORN
3081da177e4SLinus Torvalds	bool
3091da177e4SLinus Torvalds
3101da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
3111da177e4SLinus Torvalds
3121da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
3131da177e4SLinus Torvaldsconfig XSCALE_PMU
3141da177e4SLinus Torvalds	bool
3151da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
3161da177e4SLinus Torvalds	default y
3171da177e4SLinus Torvalds
3181da177e4SLinus Torvaldsendmenu
3191da177e4SLinus Torvalds
3201da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
3211da177e4SLinus Torvalds
3221da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
3231da177e4SLinus Torvalds	int
3241da177e4SLinus Torvalds	depends on SA1111
3251da177e4SLinus Torvalds	default "9"
3261da177e4SLinus Torvalds
3271da177e4SLinus Torvaldsmenu "Bus support"
3281da177e4SLinus Torvalds
3291da177e4SLinus Torvaldsconfig ARM_AMBA
3301da177e4SLinus Torvalds	bool
3311da177e4SLinus Torvalds
3321da177e4SLinus Torvaldsconfig ISA
3331da177e4SLinus Torvalds	bool
3341da177e4SLinus Torvalds	help
3351da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
3361da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
3371da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
3381da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
3391da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
3401da177e4SLinus Torvalds
341065909b9SRussell King# Select ISA DMA controller support
3421da177e4SLinus Torvaldsconfig ISA_DMA
3431da177e4SLinus Torvalds	bool
344065909b9SRussell King	select ISA_DMA_API
3451da177e4SLinus Torvalds
346065909b9SRussell King# Select ISA DMA interface
3475cae841bSAl Viroconfig ISA_DMA_API
3485cae841bSAl Viro	bool
3495cae841bSAl Viro
3501da177e4SLinus Torvaldsconfig PCI
351c0da085aSCatalin Marinas	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
3521da177e4SLinus Torvalds	help
3531da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
3541da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
3551da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
3561da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
3571da177e4SLinus Torvalds
3581da177e4SLinus Torvalds	  The PCI-HOWTO, available from
3591da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>, contains valuable
3601da177e4SLinus Torvalds	  information about which PCI hardware does work under Linux and which
3611da177e4SLinus Torvalds	  doesn't.
3621da177e4SLinus Torvalds
3631da177e4SLinus Torvalds# Select the host bridge type
3641da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
3651da177e4SLinus Torvalds	bool
3661da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
3671da177e4SLinus Torvalds	default y
3681da177e4SLinus Torvalds
3691da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
3701da177e4SLinus Torvalds
3711da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
3721da177e4SLinus Torvalds
3731da177e4SLinus Torvaldsendmenu
3741da177e4SLinus Torvalds
3751da177e4SLinus Torvaldsmenu "Kernel Features"
3761da177e4SLinus Torvalds
3771da177e4SLinus Torvaldsconfig SMP
3781da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
379f6db449cSRussell King	depends on EXPERIMENTAL && REALVIEW_MPCORE
3801da177e4SLinus Torvalds	help
3811da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
3821da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
3831da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
3841da177e4SLinus Torvalds
3851da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
3861da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
3871da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
3881da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
3891da177e4SLinus Torvalds	  run faster if you say N here.
3901da177e4SLinus Torvalds
39112c62c2eSArthur Othieno	  See also the <file:Documentation/smp.txt>,
39212c62c2eSArthur Othieno	  <file:Documentation/i386/IO-APIC.txt>,
3931da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
3941da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
3951da177e4SLinus Torvalds
3961da177e4SLinus Torvalds	  If you don't know what to do here, say N.
3971da177e4SLinus Torvalds
3981da177e4SLinus Torvaldsconfig NR_CPUS
3991da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
4001da177e4SLinus Torvalds	range 2 32
4011da177e4SLinus Torvalds	depends on SMP
4021da177e4SLinus Torvalds	default "4"
4031da177e4SLinus Torvalds
404a054a811SRussell Kingconfig HOTPLUG_CPU
405a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
406a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
407a054a811SRussell King	help
408a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
409a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
410a054a811SRussell King
41137ee16aeSRussell Kingconfig LOCAL_TIMERS
41237ee16aeSRussell King	bool "Use local timer interrupts"
4132a98beb6SRussell King	depends on SMP && REALVIEW_MPCORE
41437ee16aeSRussell King	default y
41537ee16aeSRussell King	help
41637ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
41737ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
41837ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
41937ee16aeSRussell King	  "thundering herd" at every timer tick.
42037ee16aeSRussell King
4211da177e4SLinus Torvaldsconfig PREEMPT
4221da177e4SLinus Torvalds	bool "Preemptible Kernel (EXPERIMENTAL)"
4231da177e4SLinus Torvalds	depends on EXPERIMENTAL
4241da177e4SLinus Torvalds	help
4251da177e4SLinus Torvalds	  This option reduces the latency of the kernel when reacting to
4261da177e4SLinus Torvalds	  real-time or interactive events by allowing a low priority process to
4271da177e4SLinus Torvalds	  be preempted even if it is in kernel mode executing a system call.
4281da177e4SLinus Torvalds	  This allows applications to run more reliably even when the system is
4291da177e4SLinus Torvalds	  under load.
4301da177e4SLinus Torvalds
4311da177e4SLinus Torvalds	  Say Y here if you are building a kernel for a desktop, embedded
4321da177e4SLinus Torvalds	  or real-time system.  Say N if you are unsure.
4331da177e4SLinus Torvalds
4348749af68SRussell Kingconfig NO_IDLE_HZ
4358749af68SRussell King	bool "Dynamic tick timer"
4368749af68SRussell King	help
4378749af68SRussell King	  Select this option if you want to disable continuous timer ticks
4388749af68SRussell King	  and have them programmed to occur as required. This option saves
4398749af68SRussell King	  power as the system can remain in idle state for longer.
4408749af68SRussell King
4418749af68SRussell King	  By default dynamic tick is disabled during the boot, and can be
4428749af68SRussell King	  manually enabled with:
4438749af68SRussell King
4448749af68SRussell King	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick
4458749af68SRussell King
4468749af68SRussell King	  Alternatively, if you want dynamic tick automatically enabled
4478749af68SRussell King	  during boot, pass "dyntick=enable" via the kernel command string.
4488749af68SRussell King
449f2be64b3STony Lindgren	  Please note that dynamic tick may affect the accuracy of
450f2be64b3STony Lindgren	  timekeeping on some platforms depending on the implementation.
451569d2c34SNicolas Pitre	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
452569d2c34SNicolas Pitre	  to have accurate timekeeping with dynamic tick.
453f2be64b3STony Lindgren
454f8065813SRussell Kingconfig HZ
455f8065813SRussell King	int
456f8065813SRussell King	default 128 if ARCH_L7200
457f8065813SRussell King	default 200 if ARCH_EBSA110 || ARCH_S3C2410
458bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
459f8065813SRussell King	default 100
460f8065813SRussell King
461704bdda0SNicolas Pitreconfig AEABI
462704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
463704bdda0SNicolas Pitre	help
464704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
465704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
466704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
467704bdda0SNicolas Pitre
468704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
469704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
470704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
471704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
472704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
473704bdda0SNicolas Pitre
474704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
475704bdda0SNicolas Pitre
4766c90c872SNicolas Pitreconfig OABI_COMPAT
477a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
47861c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
4796c90c872SNicolas Pitre	default y
4806c90c872SNicolas Pitre	help
4816c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
4826c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
4836c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
4846c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
4856c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
4866c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
4876c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
4886c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
4896c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
4906c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
4916c90c872SNicolas Pitre	  at all). If in doubt say Y.
4926c90c872SNicolas Pitre
4933f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
4941da177e4SLinus Torvalds	bool
495f7e68bbfSRussell King	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
4961da177e4SLinus Torvalds	help
4971da177e4SLinus Torvalds	  Say Y to support efficient handling of discontiguous physical memory,
4981da177e4SLinus Torvalds	  for architectures which are either NUMA (Non-Uniform Memory Access)
4991da177e4SLinus Torvalds	  or have huge holes in the physical address space for other reasons.
5001da177e4SLinus Torvalds	  See <file:Documentation/vm/numa> for more.
5011da177e4SLinus Torvalds
5023f22ab27SDave Hansensource "mm/Kconfig"
5033f22ab27SDave Hansen
5041da177e4SLinus Torvaldsconfig LEDS
5051da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
5061da177e4SLinus Torvalds	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
5071da177e4SLinus Torvalds		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
5081da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
5091da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
51073a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
51173a59c1cSSAN People		   ARCH_AT91RM9200
5121da177e4SLinus Torvalds	help
5131da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
5141da177e4SLinus Torvalds	  to provide useful information about your current system status.
5151da177e4SLinus Torvalds
5161da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
5171da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
5181da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
5191da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
5201da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
5211da177e4SLinus Torvalds	  system, but the driver will do nothing.
5221da177e4SLinus Torvalds
5231da177e4SLinus Torvaldsconfig LEDS_TIMER
5241da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
5251da177e4SLinus Torvalds			    MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5261da177e4SLinus Torvalds	depends on LEDS
5271da177e4SLinus Torvalds	default y if ARCH_EBSA110
5281da177e4SLinus Torvalds	help
5291da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
5301da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
5311da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
5321da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
5331da177e4SLinus Torvalds	  debugging unstable kernels.
5341da177e4SLinus Torvalds
5351da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5361da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5371da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5381da177e4SLinus Torvalds
5391da177e4SLinus Torvaldsconfig LEDS_CPU
5401da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
5411da177e4SLinus Torvalds			!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5421da177e4SLinus Torvalds	depends on LEDS
5431da177e4SLinus Torvalds	help
5441da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
5451da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
5461da177e4SLinus Torvalds	  is not currently executing.
5471da177e4SLinus Torvalds
5481da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5491da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5501da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5511da177e4SLinus Torvalds
5521da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
5531da177e4SLinus Torvalds	bool
5541da177e4SLinus Torvalds	default y if !ARCH_EBSA110
5551da177e4SLinus Torvalds	help
5561da177e4SLinus Torvalds	  ARM processors can not fetch/store information which is not
5571da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
5581da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
5591da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
5601da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
5611da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
5621da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
5631da177e4SLinus Torvalds
5641da177e4SLinus Torvaldsendmenu
5651da177e4SLinus Torvalds
5661da177e4SLinus Torvaldsmenu "Boot options"
5671da177e4SLinus Torvalds
5681da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
5691da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
5701da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
5711da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
5721da177e4SLinus Torvalds	default "0"
5731da177e4SLinus Torvalds	help
5741da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
5751da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
5761da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5771da177e4SLinus Torvalds	  value in their defconfig file.
5781da177e4SLinus Torvalds
5791da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5801da177e4SLinus Torvalds
5811da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
5821da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
5831da177e4SLinus Torvalds	default "0"
5841da177e4SLinus Torvalds	help
5851da177e4SLinus Torvalds	  The base address of 64KiB of read/write memory in the target
5861da177e4SLinus Torvalds	  for the ROM-able zImage, which must be available while the
5871da177e4SLinus Torvalds	  decompressor is running.  Platforms which normally make use of
5881da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5891da177e4SLinus Torvalds	  value in their defconfig file.
5901da177e4SLinus Torvalds
5911da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5921da177e4SLinus Torvalds
5931da177e4SLinus Torvaldsconfig ZBOOT_ROM
5941da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
5951da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
5961da177e4SLinus Torvalds	help
5971da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
5981da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
5991da177e4SLinus Torvalds
6001da177e4SLinus Torvaldsconfig CMDLINE
6011da177e4SLinus Torvalds	string "Default kernel command string"
6021da177e4SLinus Torvalds	default ""
6031da177e4SLinus Torvalds	help
6041da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
6051da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
6061da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
6071da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
6081da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
6091da177e4SLinus Torvalds
6101da177e4SLinus Torvaldsconfig XIP_KERNEL
6111da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
6121da177e4SLinus Torvalds	depends on !ZBOOT_ROM
6131da177e4SLinus Torvalds	help
6141da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
6151da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
6161da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
6171da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
6181da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
6191da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
6201da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
6211da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
6221da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
6231da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
6241da177e4SLinus Torvalds
6251da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
6261da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
6271da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
6281da177e4SLinus Torvalds
6291da177e4SLinus Torvalds	  If unsure, say N.
6301da177e4SLinus Torvalds
6311da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
6321da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
6331da177e4SLinus Torvalds	depends on XIP_KERNEL
6341da177e4SLinus Torvalds	default "0x00080000"
6351da177e4SLinus Torvalds	help
6361da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
6371da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
6381da177e4SLinus Torvalds	  own flash usage.
6391da177e4SLinus Torvalds
6401da177e4SLinus Torvaldsendmenu
6411da177e4SLinus Torvalds
642ec6bced6STony Lindgrenif (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
6431da177e4SLinus Torvalds
6441da177e4SLinus Torvaldsmenu "CPU Frequency scaling"
6451da177e4SLinus Torvalds
6461da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
6471da177e4SLinus Torvalds
6481da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
6491da177e4SLinus Torvalds	bool
65007c6d48fSVincent Sanders	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
6511da177e4SLinus Torvalds	default y
6521da177e4SLinus Torvalds
6531da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
6541da177e4SLinus Torvalds	bool
6551da177e4SLinus Torvalds	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
6561da177e4SLinus Torvalds	default y
6571da177e4SLinus Torvalds
6581da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
6591da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
6601da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
6611da177e4SLinus Torvalds	default y
6621da177e4SLinus Torvalds	help
6631da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
6641da177e4SLinus Torvalds
6651da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
6661da177e4SLinus Torvalds
6671da177e4SLinus Torvalds	  If in doubt, say Y.
6681da177e4SLinus Torvalds
6691da177e4SLinus Torvaldsendmenu
6701da177e4SLinus Torvalds
6711da177e4SLinus Torvaldsendif
6721da177e4SLinus Torvalds
6731da177e4SLinus Torvaldsmenu "Floating point emulation"
6741da177e4SLinus Torvalds
6751da177e4SLinus Torvaldscomment "At least one emulation must be selected"
6761da177e4SLinus Torvalds
6771da177e4SLinus Torvaldsconfig FPE_NWFPE
6781da177e4SLinus Torvalds	bool "NWFPE math emulation"
6798993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
6801da177e4SLinus Torvalds	---help---
6811da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
6821da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
6831da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
6841da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
6851da177e4SLinus Torvalds
6861da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
6871da177e4SLinus Torvalds	  early in the bootup.
6881da177e4SLinus Torvalds
6891da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
6901da177e4SLinus Torvalds	bool "Support extended precision"
691bedf142bSLennert Buytenhek	depends on FPE_NWFPE
6921da177e4SLinus Torvalds	help
6931da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
6941da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
6951da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
6961da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
6971da177e4SLinus Torvalds	  floating point emulator without any good reason.
6981da177e4SLinus Torvalds
6991da177e4SLinus Torvalds	  You almost surely want to say N here.
7001da177e4SLinus Torvalds
7011da177e4SLinus Torvaldsconfig FPE_FASTFPE
7021da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
7038993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
7041da177e4SLinus Torvalds	---help---
7051da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
7061da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
7071da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
7081da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
7091da177e4SLinus Torvalds
7101da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
7111da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
7121da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
7131da177e4SLinus Torvalds	  choose NWFPE.
7141da177e4SLinus Torvalds
7151da177e4SLinus Torvaldsconfig VFP
7161da177e4SLinus Torvalds	bool "VFP-format floating point maths"
7171da177e4SLinus Torvalds	depends on CPU_V6 || CPU_ARM926T
7181da177e4SLinus Torvalds	help
7191da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
7201da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
7211da177e4SLinus Torvalds
7221da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
7231da177e4SLinus Torvalds	  release notes and additional status information.
7241da177e4SLinus Torvalds
7251da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
7261da177e4SLinus Torvalds
7271da177e4SLinus Torvaldsendmenu
7281da177e4SLinus Torvalds
7291da177e4SLinus Torvaldsmenu "Userspace binary formats"
7301da177e4SLinus Torvalds
7311da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
7321da177e4SLinus Torvalds
7331da177e4SLinus Torvaldsconfig ARTHUR
7341da177e4SLinus Torvalds	tristate "RISC OS personality"
735704bdda0SNicolas Pitre	depends on !AEABI
7361da177e4SLinus Torvalds	help
7371da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
7381da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
7391da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
7401da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
7411da177e4SLinus Torvalds	  will be called arthur).
7421da177e4SLinus Torvalds
7431da177e4SLinus Torvaldsendmenu
7441da177e4SLinus Torvalds
7451da177e4SLinus Torvaldsmenu "Power management options"
7461da177e4SLinus Torvalds
747eceab4acSRussell Kingsource "kernel/power/Kconfig"
7481da177e4SLinus Torvalds
7491da177e4SLinus Torvaldsconfig APM
7501da177e4SLinus Torvalds	tristate "Advanced Power Management Emulation"
7511da177e4SLinus Torvalds	---help---
7521da177e4SLinus Torvalds	  APM is a BIOS specification for saving power using several different
7531da177e4SLinus Torvalds	  techniques. This is mostly useful for battery powered laptops with
7541da177e4SLinus Torvalds	  APM compliant BIOSes. If you say Y here, the system time will be
7551da177e4SLinus Torvalds	  reset after a RESUME operation, the /proc/apm device will provide
7561da177e4SLinus Torvalds	  battery status information, and user-space programs will receive
7571da177e4SLinus Torvalds	  notification of APM "events" (e.g. battery status change).
7581da177e4SLinus Torvalds
7591da177e4SLinus Torvalds	  In order to use APM, you will need supporting software. For location
7601da177e4SLinus Torvalds	  and more information, read <file:Documentation/pm.txt> and the
7611da177e4SLinus Torvalds	  Battery Powered Linux mini-HOWTO, available from
7621da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>.
7631da177e4SLinus Torvalds
7641da177e4SLinus Torvalds	  This driver does not spin down disk drives (see the hdparm(8)
7651da177e4SLinus Torvalds	  manpage ("man 8 hdparm") for that), and it doesn't turn off
7661da177e4SLinus Torvalds	  VESA-compliant "green" monitors.
7671da177e4SLinus Torvalds
7681da177e4SLinus Torvalds	  Generally, if you don't have a battery in your machine, there isn't
7691da177e4SLinus Torvalds	  much point in using this driver and you should say N. If you get
7701da177e4SLinus Torvalds	  random kernel OOPSes or reboots that don't seem to be related to
7711da177e4SLinus Torvalds	  anything, try disabling/enabling this option (or disabling/enabling
7721da177e4SLinus Torvalds	  APM in your BIOS).
7731da177e4SLinus Torvalds
7741da177e4SLinus Torvaldsendmenu
7751da177e4SLinus Torvalds
776d5950b43SSam Ravnborgsource "net/Kconfig"
777d5950b43SSam Ravnborg
7781da177e4SLinus Torvaldsmenu "Device Drivers"
7791da177e4SLinus Torvalds
7801da177e4SLinus Torvaldssource "drivers/base/Kconfig"
7811da177e4SLinus Torvalds
782c35bf4a5SPavel Macheksource "drivers/connector/Kconfig"
783c35bf4a5SPavel Machek
7841da177e4SLinus Torvaldsif ALIGNMENT_TRAP
7851da177e4SLinus Torvaldssource "drivers/mtd/Kconfig"
7861da177e4SLinus Torvaldsendif
7871da177e4SLinus Torvalds
7881da177e4SLinus Torvaldssource "drivers/parport/Kconfig"
7891da177e4SLinus Torvalds
7901da177e4SLinus Torvaldssource "drivers/pnp/Kconfig"
7911da177e4SLinus Torvalds
7921da177e4SLinus Torvaldssource "drivers/block/Kconfig"
7931da177e4SLinus Torvalds
7941da177e4SLinus Torvaldssource "drivers/acorn/block/Kconfig"
7951da177e4SLinus Torvalds
796bb011b8eSDavid Brownellif PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
797bb011b8eSDavid Brownell	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
798*c4713074SLennert Buytenhek	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
799*c4713074SLennert Buytenhek	|| ARCH_IXP23XX
8001da177e4SLinus Torvaldssource "drivers/ide/Kconfig"
8011da177e4SLinus Torvaldsendif
8021da177e4SLinus Torvalds
8031da177e4SLinus Torvaldssource "drivers/scsi/Kconfig"
8041da177e4SLinus Torvalds
8051da177e4SLinus Torvaldssource "drivers/md/Kconfig"
8061da177e4SLinus Torvalds
8071da177e4SLinus Torvaldssource "drivers/message/fusion/Kconfig"
8081da177e4SLinus Torvalds
8091da177e4SLinus Torvaldssource "drivers/ieee1394/Kconfig"
8101da177e4SLinus Torvalds
8111da177e4SLinus Torvaldssource "drivers/message/i2o/Kconfig"
8121da177e4SLinus Torvalds
813d5950b43SSam Ravnborgsource "drivers/net/Kconfig"
8141da177e4SLinus Torvalds
8151da177e4SLinus Torvaldssource "drivers/isdn/Kconfig"
8161da177e4SLinus Torvalds
8171da177e4SLinus Torvalds# input before char - char/joystick depends on it. As does USB.
8181da177e4SLinus Torvalds
8191da177e4SLinus Torvaldssource "drivers/input/Kconfig"
8201da177e4SLinus Torvalds
8211da177e4SLinus Torvaldssource "drivers/char/Kconfig"
8221da177e4SLinus Torvalds
8231da177e4SLinus Torvaldssource "drivers/i2c/Kconfig"
8241da177e4SLinus Torvalds
8258ae12a0dSDavid Brownellsource "drivers/spi/Kconfig"
8268ae12a0dSDavid Brownell
82704916c0eSAlessandro Zummosource "drivers/w1/Kconfig"
82804916c0eSAlessandro Zummo
829ad2f931dSJean Delvaresource "drivers/hwmon/Kconfig"
830ad2f931dSJean Delvare
8311da177e4SLinus Torvalds#source "drivers/l3/Kconfig"
8321da177e4SLinus Torvalds
8331da177e4SLinus Torvaldssource "drivers/misc/Kconfig"
8341da177e4SLinus Torvalds
835a4e137abSRussell Kingsource "drivers/mfd/Kconfig"
836a4e137abSRussell King
8371da177e4SLinus Torvaldssource "drivers/media/Kconfig"
8381da177e4SLinus Torvalds
8391da177e4SLinus Torvaldssource "drivers/video/Kconfig"
8401da177e4SLinus Torvalds
8411da177e4SLinus Torvaldssource "sound/Kconfig"
8421da177e4SLinus Torvalds
8431da177e4SLinus Torvaldssource "drivers/usb/Kconfig"
8441da177e4SLinus Torvalds
8451da177e4SLinus Torvaldssource "drivers/mmc/Kconfig"
8461da177e4SLinus Torvalds
8471da177e4SLinus Torvaldsendmenu
8481da177e4SLinus Torvalds
8491da177e4SLinus Torvaldssource "fs/Kconfig"
8501da177e4SLinus Torvalds
8511da177e4SLinus Torvaldssource "arch/arm/oprofile/Kconfig"
8521da177e4SLinus Torvalds
8531da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
8541da177e4SLinus Torvalds
8551da177e4SLinus Torvaldssource "security/Kconfig"
8561da177e4SLinus Torvalds
8571da177e4SLinus Torvaldssource "crypto/Kconfig"
8581da177e4SLinus Torvalds
8591da177e4SLinus Torvaldssource "lib/Kconfig"
860