xref: /linux/arch/arm/Kconfig (revision b89c3b165fbec605c60fd5a9e32d647e4c0befbb)
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
56*b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
57*b89c3b16SAkinobu Mita	bool
58*b89c3b16SAkinobu Mita	default y
59*b89c3b16SAkinobu Mita
601da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
611da177e4SLinus Torvalds	bool
621da177e4SLinus Torvalds	default y
631da177e4SLinus Torvalds
641da177e4SLinus Torvaldsconfig GENERIC_BUST_SPINLOCK
651da177e4SLinus Torvalds	bool
661da177e4SLinus Torvalds
67a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
68a08b6b79Sviro@ZenIV.linux.org.uk	bool
69a08b6b79Sviro@ZenIV.linux.org.uk
701da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
711da177e4SLinus Torvalds	bool
721da177e4SLinus Torvalds
731da177e4SLinus Torvaldsconfig FIQ
741da177e4SLinus Torvalds	bool
751da177e4SLinus Torvalds
76034d2f5aSAl Viroconfig ARCH_MTD_XIP
77034d2f5aSAl Viro	bool
78034d2f5aSAl Viro
791da177e4SLinus Torvaldssource "init/Kconfig"
801da177e4SLinus Torvalds
811da177e4SLinus Torvaldsmenu "System Type"
821da177e4SLinus Torvalds
831da177e4SLinus Torvaldschoice
841da177e4SLinus Torvalds	prompt "ARM system type"
856a0e2430SCatalin Marinas	default ARCH_VERSATILE
861da177e4SLinus Torvalds
871da177e4SLinus Torvaldsconfig ARCH_CLPS7500
881da177e4SLinus Torvalds	bool "Cirrus-CL-PS7500FE"
891da177e4SLinus Torvalds	select TIMER_ACORN
90f7e68bbfSRussell King	select ISA
91f999b8bdSMartin Michlmayr	help
92f999b8bdSMartin Michlmayr	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
931da177e4SLinus Torvalds
941da177e4SLinus Torvaldsconfig ARCH_CLPS711X
951da177e4SLinus Torvalds	bool "CLPS711x/EP721x-based"
96f999b8bdSMartin Michlmayr	help
97f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
981da177e4SLinus Torvalds
991da177e4SLinus Torvaldsconfig ARCH_CO285
1001da177e4SLinus Torvalds	bool "Co-EBSA285"
1011da177e4SLinus Torvalds	select FOOTBRIDGE
1021da177e4SLinus Torvalds	select FOOTBRIDGE_ADDIN
103f999b8bdSMartin Michlmayr	help
104f999b8bdSMartin Michlmayr	  Support for Intel's EBSA285 companion chip.
1051da177e4SLinus Torvalds
1061da177e4SLinus Torvaldsconfig ARCH_EBSA110
1071da177e4SLinus Torvalds	bool "EBSA-110"
108f7e68bbfSRussell King	select ISA
1091da177e4SLinus Torvalds	help
1101da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
111f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
1121da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
1131da177e4SLinus Torvalds	  parallel port.
1141da177e4SLinus Torvalds
115e7736d47SLennert Buytenhekconfig ARCH_EP93XX
116e7736d47SLennert Buytenhek	bool "EP93xx-based"
117e7736d47SLennert Buytenhek	select ARM_AMBA
118e7736d47SLennert Buytenhek	select ARM_VIC
119e7736d47SLennert Buytenhek	help
120e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
121e7736d47SLennert Buytenhek
1221da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
1231da177e4SLinus Torvalds	bool "FootBridge"
1241da177e4SLinus Torvalds	select FOOTBRIDGE
125f999b8bdSMartin Michlmayr	help
126f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
127f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1281da177e4SLinus Torvalds
1291da177e4SLinus Torvaldsconfig ARCH_INTEGRATOR
1301da177e4SLinus Torvalds	bool "Integrator"
1311da177e4SLinus Torvalds	select ARM_AMBA
1321da177e4SLinus Torvalds	select ICST525
133f999b8bdSMartin Michlmayr	help
134f999b8bdSMartin Michlmayr	  Support for ARM's Integrator platform.
1351da177e4SLinus Torvalds
1361da177e4SLinus Torvaldsconfig ARCH_IOP3XX
1371da177e4SLinus Torvalds	bool "IOP3xx-based"
138f7e68bbfSRussell King	select PCI
139f999b8bdSMartin Michlmayr	help
140f999b8bdSMartin Michlmayr	  Support for Intel's IOP3XX (XScale) family of processors.
1411da177e4SLinus Torvalds
1421da177e4SLinus Torvaldsconfig ARCH_IXP4XX
1431da177e4SLinus Torvalds	bool "IXP4xx-based"
1441da177e4SLinus Torvalds	select DMABOUNCE
145f7e68bbfSRussell King	select PCI
146f999b8bdSMartin Michlmayr	help
147f999b8bdSMartin Michlmayr	  Support for Intel's IXP4XX (XScale) family of processors.
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvaldsconfig ARCH_IXP2000
1501da177e4SLinus Torvalds	bool "IXP2400/2800-based"
151f7e68bbfSRussell King	select PCI
152f999b8bdSMartin Michlmayr	help
153f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
1541da177e4SLinus Torvalds
1551da177e4SLinus Torvaldsconfig ARCH_L7200
1561da177e4SLinus Torvalds	bool "LinkUp-L7200"
1571da177e4SLinus Torvalds	select FIQ
1581da177e4SLinus Torvalds	help
1591da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
1601da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
1611da177e4SLinus Torvalds	  Information on this board can be obtained at:
1621da177e4SLinus Torvalds
1631da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
1641da177e4SLinus Torvalds
1651da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
1661da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
1671da177e4SLinus Torvalds
1681da177e4SLinus Torvaldsconfig ARCH_PXA
1691da177e4SLinus Torvalds	bool "PXA2xx-based"
170034d2f5aSAl Viro	select ARCH_MTD_XIP
171f999b8bdSMartin Michlmayr	help
172f999b8bdSMartin Michlmayr	  Support for Intel's PXA2XX processor line.
1731da177e4SLinus Torvalds
1741da177e4SLinus Torvaldsconfig ARCH_RPC
1751da177e4SLinus Torvalds	bool "RiscPC"
1761da177e4SLinus Torvalds	select ARCH_ACORN
1771da177e4SLinus Torvalds	select FIQ
1781da177e4SLinus Torvalds	select TIMER_ACORN
179a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
180065909b9SRussell King	select ISA_DMA_API
1811da177e4SLinus Torvalds	help
1821da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
1831da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
1841da177e4SLinus Torvalds
1851da177e4SLinus Torvaldsconfig ARCH_SA1100
1861da177e4SLinus Torvalds	bool "SA1100-based"
187f7e68bbfSRussell King	select ISA
1883cd9e19eSRussell King	select ARCH_DISCONTIGMEM_ENABLE
189034d2f5aSAl Viro	select ARCH_MTD_XIP
190f999b8bdSMartin Michlmayr	help
191f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
1921da177e4SLinus Torvalds
1931da177e4SLinus Torvaldsconfig ARCH_S3C2410
1941da177e4SLinus Torvalds	bool "Samsung S3C2410"
1951da177e4SLinus Torvalds	help
1961da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
1971da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
198f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
1991da177e4SLinus Torvalds
2001da177e4SLinus Torvaldsconfig ARCH_SHARK
2011da177e4SLinus Torvalds	bool "Shark"
202f7e68bbfSRussell King	select ISA
203f7e68bbfSRussell King	select ISA_DMA
204f7e68bbfSRussell King	select PCI
205f999b8bdSMartin Michlmayr	help
206f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
207f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
2081da177e4SLinus Torvalds
2091da177e4SLinus Torvaldsconfig ARCH_LH7A40X
2101da177e4SLinus Torvalds	bool "Sharp LH7A40X"
2111da177e4SLinus Torvalds	help
2121da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
2131da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
2141da177e4SLinus Torvalds	  core with a wide array of integrated devices for
2151da177e4SLinus Torvalds	  hand-held and low-power applications.
2161da177e4SLinus Torvalds
2171da177e4SLinus Torvaldsconfig ARCH_OMAP
2181da177e4SLinus Torvalds	bool "TI OMAP"
219f999b8bdSMartin Michlmayr	help
220f999b8bdSMartin Michlmayr	  Support for TI's OMAP platform (OMAP1 and OMAP2).
2211da177e4SLinus Torvalds
2221da177e4SLinus Torvaldsconfig ARCH_VERSATILE
2231da177e4SLinus Torvalds	bool "Versatile"
2241da177e4SLinus Torvalds	select ARM_AMBA
225fa0fe48fSRussell King	select ARM_VIC
2261da177e4SLinus Torvalds	select ICST307
2271da177e4SLinus Torvalds	help
2281da177e4SLinus Torvalds	  This enables support for ARM Ltd Versatile board.
2291da177e4SLinus Torvalds
2308ad68bbfSCatalin Marinasconfig ARCH_REALVIEW
2318ad68bbfSCatalin Marinas	bool "RealView"
2328ad68bbfSCatalin Marinas	select ARM_AMBA
2338ad68bbfSCatalin Marinas	select ICST307
2348ad68bbfSCatalin Marinas	help
2358ad68bbfSCatalin Marinas	  This enables support for ARM Ltd RealView boards.
2368ad68bbfSCatalin Marinas
2371da177e4SLinus Torvaldsconfig ARCH_IMX
2381da177e4SLinus Torvalds	bool "IMX"
239f999b8bdSMartin Michlmayr	help
240f999b8bdSMartin Michlmayr	  Support for Motorola's i.MX family of processors (MX1, MXL).
2411da177e4SLinus Torvalds
2421da177e4SLinus Torvaldsconfig ARCH_H720X
2431da177e4SLinus Torvalds	bool "Hynix-HMS720x-based"
244065909b9SRussell King	select ISA_DMA_API
2451da177e4SLinus Torvalds	help
2461da177e4SLinus Torvalds	  This enables support for systems based on the Hynix HMS720x
2471da177e4SLinus Torvalds
248038c5b60SBellido Nicolasconfig ARCH_AAEC2000
249038c5b60SBellido Nicolas	bool "Agilent AAEC-2000 based"
250049eb329SBellido Nicolas	select ARM_AMBA
251038c5b60SBellido Nicolas	help
252038c5b60SBellido Nicolas	  This enables support for systems based on the Agilent AAEC-2000
253038c5b60SBellido Nicolas
25473a59c1cSSAN Peopleconfig ARCH_AT91RM9200
25573a59c1cSSAN People	bool "AT91RM9200"
25673a59c1cSSAN People	help
257f999b8bdSMartin Michlmayr	  Say Y here if you intend to run this kernel on an Atmel
258f999b8bdSMartin Michlmayr	  AT91RM9200-based board.
25973a59c1cSSAN People
2601da177e4SLinus Torvaldsendchoice
2611da177e4SLinus Torvalds
2621da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
2631da177e4SLinus Torvalds
264e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
265e7736d47SLennert Buytenhek
2661da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
2671da177e4SLinus Torvalds
2681da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
2691da177e4SLinus Torvalds
2701da177e4SLinus Torvaldssource "arch/arm/mach-iop3xx/Kconfig"
2711da177e4SLinus Torvalds
2721da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
2731da177e4SLinus Torvalds
2741da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
2751da177e4SLinus Torvalds
2761da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig"
2771da177e4SLinus Torvalds
2781da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig"
2791da177e4SLinus Torvalds
280d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
281d48af15eSTony Lindgren
282d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
2831da177e4SLinus Torvalds
2841dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
2851dbae815STony Lindgren
2861da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
2871da177e4SLinus Torvalds
2881da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig"
2891da177e4SLinus Torvalds
2901da177e4SLinus Torvaldssource "arch/arm/mach-imx/Kconfig"
2911da177e4SLinus Torvalds
2921da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig"
2931da177e4SLinus Torvalds
2941da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
2951da177e4SLinus Torvalds
296038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig"
297038c5b60SBellido Nicolas
2988ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig"
2998ad68bbfSCatalin Marinas
30073a59c1cSSAN Peoplesource "arch/arm/mach-at91rm9200/Kconfig"
30173a59c1cSSAN People
3021da177e4SLinus Torvalds# Definitions to make life easier
3031da177e4SLinus Torvaldsconfig ARCH_ACORN
3041da177e4SLinus Torvalds	bool
3051da177e4SLinus Torvalds
3061da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
3071da177e4SLinus Torvalds
3081da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
3091da177e4SLinus Torvaldsconfig XSCALE_PMU
3101da177e4SLinus Torvalds	bool
3111da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
3121da177e4SLinus Torvalds	default y
3131da177e4SLinus Torvalds
3141da177e4SLinus Torvaldsendmenu
3151da177e4SLinus Torvalds
3161da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
3171da177e4SLinus Torvalds
3181da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
3191da177e4SLinus Torvalds	int
3201da177e4SLinus Torvalds	depends on SA1111
3211da177e4SLinus Torvalds	default "9"
3221da177e4SLinus Torvalds
3231da177e4SLinus Torvaldsmenu "Bus support"
3241da177e4SLinus Torvalds
3251da177e4SLinus Torvaldsconfig ARM_AMBA
3261da177e4SLinus Torvalds	bool
3271da177e4SLinus Torvalds
3281da177e4SLinus Torvaldsconfig ISA
3291da177e4SLinus Torvalds	bool
3301da177e4SLinus Torvalds	help
3311da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
3321da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
3331da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
3341da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
3351da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
3361da177e4SLinus Torvalds
337065909b9SRussell King# Select ISA DMA controller support
3381da177e4SLinus Torvaldsconfig ISA_DMA
3391da177e4SLinus Torvalds	bool
340065909b9SRussell King	select ISA_DMA_API
3411da177e4SLinus Torvalds
342065909b9SRussell King# Select ISA DMA interface
3435cae841bSAl Viroconfig ISA_DMA_API
3445cae841bSAl Viro	bool
3455cae841bSAl Viro
3461da177e4SLinus Torvaldsconfig PCI
347c0da085aSCatalin Marinas	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
3481da177e4SLinus Torvalds	help
3491da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
3501da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
3511da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
3521da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
3531da177e4SLinus Torvalds
3541da177e4SLinus Torvalds	  The PCI-HOWTO, available from
3551da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>, contains valuable
3561da177e4SLinus Torvalds	  information about which PCI hardware does work under Linux and which
3571da177e4SLinus Torvalds	  doesn't.
3581da177e4SLinus Torvalds
3591da177e4SLinus Torvalds# Select the host bridge type
3601da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
3611da177e4SLinus Torvalds	bool
3621da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
3631da177e4SLinus Torvalds	default y
3641da177e4SLinus Torvalds
3651da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
3661da177e4SLinus Torvalds
3671da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
3681da177e4SLinus Torvalds
3691da177e4SLinus Torvaldsendmenu
3701da177e4SLinus Torvalds
3711da177e4SLinus Torvaldsmenu "Kernel Features"
3721da177e4SLinus Torvalds
3731da177e4SLinus Torvaldsconfig SMP
3741da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
375f6db449cSRussell King	depends on EXPERIMENTAL && REALVIEW_MPCORE
3761da177e4SLinus Torvalds	help
3771da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
3781da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
3791da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
3801da177e4SLinus Torvalds
3811da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
3821da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
3831da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
3841da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
3851da177e4SLinus Torvalds	  run faster if you say N here.
3861da177e4SLinus Torvalds
38712c62c2eSArthur Othieno	  See also the <file:Documentation/smp.txt>,
38812c62c2eSArthur Othieno	  <file:Documentation/i386/IO-APIC.txt>,
3891da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
3901da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
3911da177e4SLinus Torvalds
3921da177e4SLinus Torvalds	  If you don't know what to do here, say N.
3931da177e4SLinus Torvalds
3941da177e4SLinus Torvaldsconfig NR_CPUS
3951da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
3961da177e4SLinus Torvalds	range 2 32
3971da177e4SLinus Torvalds	depends on SMP
3981da177e4SLinus Torvalds	default "4"
3991da177e4SLinus Torvalds
400a054a811SRussell Kingconfig HOTPLUG_CPU
401a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
402a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
403a054a811SRussell King	help
404a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
405a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
406a054a811SRussell King
40737ee16aeSRussell Kingconfig LOCAL_TIMERS
40837ee16aeSRussell King	bool "Use local timer interrupts"
4092a98beb6SRussell King	depends on SMP && REALVIEW_MPCORE
41037ee16aeSRussell King	default y
41137ee16aeSRussell King	help
41237ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
41337ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
41437ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
41537ee16aeSRussell King	  "thundering herd" at every timer tick.
41637ee16aeSRussell King
4171da177e4SLinus Torvaldsconfig PREEMPT
4181da177e4SLinus Torvalds	bool "Preemptible Kernel (EXPERIMENTAL)"
4191da177e4SLinus Torvalds	depends on EXPERIMENTAL
4201da177e4SLinus Torvalds	help
4211da177e4SLinus Torvalds	  This option reduces the latency of the kernel when reacting to
4221da177e4SLinus Torvalds	  real-time or interactive events by allowing a low priority process to
4231da177e4SLinus Torvalds	  be preempted even if it is in kernel mode executing a system call.
4241da177e4SLinus Torvalds	  This allows applications to run more reliably even when the system is
4251da177e4SLinus Torvalds	  under load.
4261da177e4SLinus Torvalds
4271da177e4SLinus Torvalds	  Say Y here if you are building a kernel for a desktop, embedded
4281da177e4SLinus Torvalds	  or real-time system.  Say N if you are unsure.
4291da177e4SLinus Torvalds
4308749af68SRussell Kingconfig NO_IDLE_HZ
4318749af68SRussell King	bool "Dynamic tick timer"
4328749af68SRussell King	help
4338749af68SRussell King	  Select this option if you want to disable continuous timer ticks
4348749af68SRussell King	  and have them programmed to occur as required. This option saves
4358749af68SRussell King	  power as the system can remain in idle state for longer.
4368749af68SRussell King
4378749af68SRussell King	  By default dynamic tick is disabled during the boot, and can be
4388749af68SRussell King	  manually enabled with:
4398749af68SRussell King
4408749af68SRussell King	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick
4418749af68SRussell King
4428749af68SRussell King	  Alternatively, if you want dynamic tick automatically enabled
4438749af68SRussell King	  during boot, pass "dyntick=enable" via the kernel command string.
4448749af68SRussell King
445f2be64b3STony Lindgren	  Please note that dynamic tick may affect the accuracy of
446f2be64b3STony Lindgren	  timekeeping on some platforms depending on the implementation.
447569d2c34SNicolas Pitre	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
448569d2c34SNicolas Pitre	  to have accurate timekeeping with dynamic tick.
449f2be64b3STony Lindgren
450f8065813SRussell Kingconfig HZ
451f8065813SRussell King	int
452f8065813SRussell King	default 128 if ARCH_L7200
453f8065813SRussell King	default 200 if ARCH_EBSA110 || ARCH_S3C2410
454bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
455f8065813SRussell King	default 100
456f8065813SRussell King
457704bdda0SNicolas Pitreconfig AEABI
458704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
459704bdda0SNicolas Pitre	help
460704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
461704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
462704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
463704bdda0SNicolas Pitre
464704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
465704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
466704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
467704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
468704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
469704bdda0SNicolas Pitre
470704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
471704bdda0SNicolas Pitre
4726c90c872SNicolas Pitreconfig OABI_COMPAT
473a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
47461c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
4756c90c872SNicolas Pitre	default y
4766c90c872SNicolas Pitre	help
4776c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
4786c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
4796c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
4806c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
4816c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
4826c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
4836c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
4846c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
4856c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
4866c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
4876c90c872SNicolas Pitre	  at all). If in doubt say Y.
4886c90c872SNicolas Pitre
4893f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
4901da177e4SLinus Torvalds	bool
491f7e68bbfSRussell King	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
4921da177e4SLinus Torvalds	help
4931da177e4SLinus Torvalds	  Say Y to support efficient handling of discontiguous physical memory,
4941da177e4SLinus Torvalds	  for architectures which are either NUMA (Non-Uniform Memory Access)
4951da177e4SLinus Torvalds	  or have huge holes in the physical address space for other reasons.
4961da177e4SLinus Torvalds	  See <file:Documentation/vm/numa> for more.
4971da177e4SLinus Torvalds
4983f22ab27SDave Hansensource "mm/Kconfig"
4993f22ab27SDave Hansen
5001da177e4SLinus Torvaldsconfig LEDS
5011da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
5021da177e4SLinus Torvalds	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
5031da177e4SLinus Torvalds		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
5041da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
5051da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
50673a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
50773a59c1cSSAN People		   ARCH_AT91RM9200
5081da177e4SLinus Torvalds	help
5091da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
5101da177e4SLinus Torvalds	  to provide useful information about your current system status.
5111da177e4SLinus Torvalds
5121da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
5131da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
5141da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
5151da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
5161da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
5171da177e4SLinus Torvalds	  system, but the driver will do nothing.
5181da177e4SLinus Torvalds
5191da177e4SLinus Torvaldsconfig LEDS_TIMER
5201da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
5211da177e4SLinus Torvalds			    MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5221da177e4SLinus Torvalds	depends on LEDS
5231da177e4SLinus Torvalds	default y if ARCH_EBSA110
5241da177e4SLinus Torvalds	help
5251da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
5261da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
5271da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
5281da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
5291da177e4SLinus Torvalds	  debugging unstable kernels.
5301da177e4SLinus Torvalds
5311da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5321da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5331da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5341da177e4SLinus Torvalds
5351da177e4SLinus Torvaldsconfig LEDS_CPU
5361da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
5371da177e4SLinus Torvalds			!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5381da177e4SLinus Torvalds	depends on LEDS
5391da177e4SLinus Torvalds	help
5401da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
5411da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
5421da177e4SLinus Torvalds	  is not currently executing.
5431da177e4SLinus Torvalds
5441da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5451da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5461da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5471da177e4SLinus Torvalds
5481da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
5491da177e4SLinus Torvalds	bool
5501da177e4SLinus Torvalds	default y if !ARCH_EBSA110
5511da177e4SLinus Torvalds	help
5521da177e4SLinus Torvalds	  ARM processors can not fetch/store information which is not
5531da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
5541da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
5551da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
5561da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
5571da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
5581da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
5591da177e4SLinus Torvalds
5601da177e4SLinus Torvaldsendmenu
5611da177e4SLinus Torvalds
5621da177e4SLinus Torvaldsmenu "Boot options"
5631da177e4SLinus Torvalds
5641da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
5651da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
5661da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
5671da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
5681da177e4SLinus Torvalds	default "0"
5691da177e4SLinus Torvalds	help
5701da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
5711da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
5721da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5731da177e4SLinus Torvalds	  value in their defconfig file.
5741da177e4SLinus Torvalds
5751da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5761da177e4SLinus Torvalds
5771da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
5781da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
5791da177e4SLinus Torvalds	default "0"
5801da177e4SLinus Torvalds	help
5811da177e4SLinus Torvalds	  The base address of 64KiB of read/write memory in the target
5821da177e4SLinus Torvalds	  for the ROM-able zImage, which must be available while the
5831da177e4SLinus Torvalds	  decompressor is running.  Platforms which normally make use of
5841da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5851da177e4SLinus Torvalds	  value in their defconfig file.
5861da177e4SLinus Torvalds
5871da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5881da177e4SLinus Torvalds
5891da177e4SLinus Torvaldsconfig ZBOOT_ROM
5901da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
5911da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
5921da177e4SLinus Torvalds	help
5931da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
5941da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
5951da177e4SLinus Torvalds
5961da177e4SLinus Torvaldsconfig CMDLINE
5971da177e4SLinus Torvalds	string "Default kernel command string"
5981da177e4SLinus Torvalds	default ""
5991da177e4SLinus Torvalds	help
6001da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
6011da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
6021da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
6031da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
6041da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
6051da177e4SLinus Torvalds
6061da177e4SLinus Torvaldsconfig XIP_KERNEL
6071da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
6081da177e4SLinus Torvalds	depends on !ZBOOT_ROM
6091da177e4SLinus Torvalds	help
6101da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
6111da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
6121da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
6131da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
6141da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
6151da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
6161da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
6171da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
6181da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
6191da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
6201da177e4SLinus Torvalds
6211da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
6221da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
6231da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
6241da177e4SLinus Torvalds
6251da177e4SLinus Torvalds	  If unsure, say N.
6261da177e4SLinus Torvalds
6271da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
6281da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
6291da177e4SLinus Torvalds	depends on XIP_KERNEL
6301da177e4SLinus Torvalds	default "0x00080000"
6311da177e4SLinus Torvalds	help
6321da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
6331da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
6341da177e4SLinus Torvalds	  own flash usage.
6351da177e4SLinus Torvalds
6361da177e4SLinus Torvaldsendmenu
6371da177e4SLinus Torvalds
638ec6bced6STony Lindgrenif (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
6391da177e4SLinus Torvalds
6401da177e4SLinus Torvaldsmenu "CPU Frequency scaling"
6411da177e4SLinus Torvalds
6421da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
6431da177e4SLinus Torvalds
6441da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
6451da177e4SLinus Torvalds	bool
64607c6d48fSVincent Sanders	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
6471da177e4SLinus Torvalds	default y
6481da177e4SLinus Torvalds
6491da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
6501da177e4SLinus Torvalds	bool
6511da177e4SLinus Torvalds	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
6521da177e4SLinus Torvalds	default y
6531da177e4SLinus Torvalds
6541da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
6551da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
6561da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
6571da177e4SLinus Torvalds	default y
6581da177e4SLinus Torvalds	help
6591da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
6601da177e4SLinus Torvalds
6611da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
6621da177e4SLinus Torvalds
6631da177e4SLinus Torvalds	  If in doubt, say Y.
6641da177e4SLinus Torvalds
6651da177e4SLinus Torvaldsendmenu
6661da177e4SLinus Torvalds
6671da177e4SLinus Torvaldsendif
6681da177e4SLinus Torvalds
6691da177e4SLinus Torvaldsmenu "Floating point emulation"
6701da177e4SLinus Torvalds
6711da177e4SLinus Torvaldscomment "At least one emulation must be selected"
6721da177e4SLinus Torvalds
6731da177e4SLinus Torvaldsconfig FPE_NWFPE
6741da177e4SLinus Torvalds	bool "NWFPE math emulation"
6758993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
6761da177e4SLinus Torvalds	---help---
6771da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
6781da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
6791da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
6801da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
6811da177e4SLinus Torvalds
6821da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
6831da177e4SLinus Torvalds	  early in the bootup.
6841da177e4SLinus Torvalds
6851da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
6861da177e4SLinus Torvalds	bool "Support extended precision"
687bedf142bSLennert Buytenhek	depends on FPE_NWFPE
6881da177e4SLinus Torvalds	help
6891da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
6901da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
6911da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
6921da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
6931da177e4SLinus Torvalds	  floating point emulator without any good reason.
6941da177e4SLinus Torvalds
6951da177e4SLinus Torvalds	  You almost surely want to say N here.
6961da177e4SLinus Torvalds
6971da177e4SLinus Torvaldsconfig FPE_FASTFPE
6981da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
6998993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
7001da177e4SLinus Torvalds	---help---
7011da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
7021da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
7031da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
7041da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
7051da177e4SLinus Torvalds
7061da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
7071da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
7081da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
7091da177e4SLinus Torvalds	  choose NWFPE.
7101da177e4SLinus Torvalds
7111da177e4SLinus Torvaldsconfig VFP
7121da177e4SLinus Torvalds	bool "VFP-format floating point maths"
7131da177e4SLinus Torvalds	depends on CPU_V6 || CPU_ARM926T
7141da177e4SLinus Torvalds	help
7151da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
7161da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
7171da177e4SLinus Torvalds
7181da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
7191da177e4SLinus Torvalds	  release notes and additional status information.
7201da177e4SLinus Torvalds
7211da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
7221da177e4SLinus Torvalds
7231da177e4SLinus Torvaldsendmenu
7241da177e4SLinus Torvalds
7251da177e4SLinus Torvaldsmenu "Userspace binary formats"
7261da177e4SLinus Torvalds
7271da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
7281da177e4SLinus Torvalds
7291da177e4SLinus Torvaldsconfig ARTHUR
7301da177e4SLinus Torvalds	tristate "RISC OS personality"
731704bdda0SNicolas Pitre	depends on !AEABI
7321da177e4SLinus Torvalds	help
7331da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
7341da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
7351da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
7361da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
7371da177e4SLinus Torvalds	  will be called arthur).
7381da177e4SLinus Torvalds
7391da177e4SLinus Torvaldsendmenu
7401da177e4SLinus Torvalds
7411da177e4SLinus Torvaldsmenu "Power management options"
7421da177e4SLinus Torvalds
743eceab4acSRussell Kingsource "kernel/power/Kconfig"
7441da177e4SLinus Torvalds
7451da177e4SLinus Torvaldsconfig APM
7461da177e4SLinus Torvalds	tristate "Advanced Power Management Emulation"
7471da177e4SLinus Torvalds	---help---
7481da177e4SLinus Torvalds	  APM is a BIOS specification for saving power using several different
7491da177e4SLinus Torvalds	  techniques. This is mostly useful for battery powered laptops with
7501da177e4SLinus Torvalds	  APM compliant BIOSes. If you say Y here, the system time will be
7511da177e4SLinus Torvalds	  reset after a RESUME operation, the /proc/apm device will provide
7521da177e4SLinus Torvalds	  battery status information, and user-space programs will receive
7531da177e4SLinus Torvalds	  notification of APM "events" (e.g. battery status change).
7541da177e4SLinus Torvalds
7551da177e4SLinus Torvalds	  In order to use APM, you will need supporting software. For location
7561da177e4SLinus Torvalds	  and more information, read <file:Documentation/pm.txt> and the
7571da177e4SLinus Torvalds	  Battery Powered Linux mini-HOWTO, available from
7581da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>.
7591da177e4SLinus Torvalds
7601da177e4SLinus Torvalds	  This driver does not spin down disk drives (see the hdparm(8)
7611da177e4SLinus Torvalds	  manpage ("man 8 hdparm") for that), and it doesn't turn off
7621da177e4SLinus Torvalds	  VESA-compliant "green" monitors.
7631da177e4SLinus Torvalds
7641da177e4SLinus Torvalds	  Generally, if you don't have a battery in your machine, there isn't
7651da177e4SLinus Torvalds	  much point in using this driver and you should say N. If you get
7661da177e4SLinus Torvalds	  random kernel OOPSes or reboots that don't seem to be related to
7671da177e4SLinus Torvalds	  anything, try disabling/enabling this option (or disabling/enabling
7681da177e4SLinus Torvalds	  APM in your BIOS).
7691da177e4SLinus Torvalds
7701da177e4SLinus Torvaldsendmenu
7711da177e4SLinus Torvalds
772d5950b43SSam Ravnborgsource "net/Kconfig"
773d5950b43SSam Ravnborg
7741da177e4SLinus Torvaldsmenu "Device Drivers"
7751da177e4SLinus Torvalds
7761da177e4SLinus Torvaldssource "drivers/base/Kconfig"
7771da177e4SLinus Torvalds
778c35bf4a5SPavel Macheksource "drivers/connector/Kconfig"
779c35bf4a5SPavel Machek
7801da177e4SLinus Torvaldsif ALIGNMENT_TRAP
7811da177e4SLinus Torvaldssource "drivers/mtd/Kconfig"
7821da177e4SLinus Torvaldsendif
7831da177e4SLinus Torvalds
7841da177e4SLinus Torvaldssource "drivers/parport/Kconfig"
7851da177e4SLinus Torvalds
7861da177e4SLinus Torvaldssource "drivers/pnp/Kconfig"
7871da177e4SLinus Torvalds
7881da177e4SLinus Torvaldssource "drivers/block/Kconfig"
7891da177e4SLinus Torvalds
7901da177e4SLinus Torvaldssource "drivers/acorn/block/Kconfig"
7911da177e4SLinus Torvalds
792bb011b8eSDavid Brownellif PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
793bb011b8eSDavid Brownell	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
794d56c524aSRussell King	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
7951da177e4SLinus Torvaldssource "drivers/ide/Kconfig"
7961da177e4SLinus Torvaldsendif
7971da177e4SLinus Torvalds
7981da177e4SLinus Torvaldssource "drivers/scsi/Kconfig"
7991da177e4SLinus Torvalds
8001da177e4SLinus Torvaldssource "drivers/md/Kconfig"
8011da177e4SLinus Torvalds
8021da177e4SLinus Torvaldssource "drivers/message/fusion/Kconfig"
8031da177e4SLinus Torvalds
8041da177e4SLinus Torvaldssource "drivers/ieee1394/Kconfig"
8051da177e4SLinus Torvalds
8061da177e4SLinus Torvaldssource "drivers/message/i2o/Kconfig"
8071da177e4SLinus Torvalds
808d5950b43SSam Ravnborgsource "drivers/net/Kconfig"
8091da177e4SLinus Torvalds
8101da177e4SLinus Torvaldssource "drivers/isdn/Kconfig"
8111da177e4SLinus Torvalds
8121da177e4SLinus Torvalds# input before char - char/joystick depends on it. As does USB.
8131da177e4SLinus Torvalds
8141da177e4SLinus Torvaldssource "drivers/input/Kconfig"
8151da177e4SLinus Torvalds
8161da177e4SLinus Torvaldssource "drivers/char/Kconfig"
8171da177e4SLinus Torvalds
8181da177e4SLinus Torvaldssource "drivers/i2c/Kconfig"
8191da177e4SLinus Torvalds
8208ae12a0dSDavid Brownellsource "drivers/spi/Kconfig"
8218ae12a0dSDavid Brownell
82204916c0eSAlessandro Zummosource "drivers/w1/Kconfig"
82304916c0eSAlessandro Zummo
824ad2f931dSJean Delvaresource "drivers/hwmon/Kconfig"
825ad2f931dSJean Delvare
8261da177e4SLinus Torvalds#source "drivers/l3/Kconfig"
8271da177e4SLinus Torvalds
8281da177e4SLinus Torvaldssource "drivers/misc/Kconfig"
8291da177e4SLinus Torvalds
830a4e137abSRussell Kingsource "drivers/mfd/Kconfig"
831a4e137abSRussell King
8321da177e4SLinus Torvaldssource "drivers/media/Kconfig"
8331da177e4SLinus Torvalds
8341da177e4SLinus Torvaldssource "drivers/video/Kconfig"
8351da177e4SLinus Torvalds
8361da177e4SLinus Torvaldssource "sound/Kconfig"
8371da177e4SLinus Torvalds
8381da177e4SLinus Torvaldssource "drivers/usb/Kconfig"
8391da177e4SLinus Torvalds
8401da177e4SLinus Torvaldssource "drivers/mmc/Kconfig"
8411da177e4SLinus Torvalds
8421da177e4SLinus Torvaldsendmenu
8431da177e4SLinus Torvalds
8441da177e4SLinus Torvaldssource "fs/Kconfig"
8451da177e4SLinus Torvalds
8461da177e4SLinus Torvaldssource "arch/arm/oprofile/Kconfig"
8471da177e4SLinus Torvalds
8481da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
8491da177e4SLinus Torvalds
8501da177e4SLinus Torvaldssource "security/Kconfig"
8511da177e4SLinus Torvalds
8521da177e4SLinus Torvaldssource "crypto/Kconfig"
8531da177e4SLinus Torvalds
8541da177e4SLinus Torvaldssource "lib/Kconfig"
855