xref: /linux/arch/arm/Kconfig (revision f6c8965ab8de61e26875d48c9e00a018c44d74f7)
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
13*f6c8965aSMartin 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
721da177e4SLinus Torvaldssource "init/Kconfig"
731da177e4SLinus Torvalds
741da177e4SLinus Torvaldsmenu "System Type"
751da177e4SLinus Torvalds
761da177e4SLinus Torvaldschoice
771da177e4SLinus Torvalds	prompt "ARM system type"
781da177e4SLinus Torvalds	default ARCH_RPC
791da177e4SLinus Torvalds
801da177e4SLinus Torvaldsconfig ARCH_CLPS7500
811da177e4SLinus Torvalds	bool "Cirrus-CL-PS7500FE"
821da177e4SLinus Torvalds	select TIMER_ACORN
83f7e68bbfSRussell King	select ISA
84f999b8bdSMartin Michlmayr	help
85f999b8bdSMartin Michlmayr	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
861da177e4SLinus Torvalds
871da177e4SLinus Torvaldsconfig ARCH_CLPS711X
881da177e4SLinus Torvalds	bool "CLPS711x/EP721x-based"
89f999b8bdSMartin Michlmayr	help
90f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
911da177e4SLinus Torvalds
921da177e4SLinus Torvaldsconfig ARCH_CO285
931da177e4SLinus Torvalds	bool "Co-EBSA285"
941da177e4SLinus Torvalds	select FOOTBRIDGE
951da177e4SLinus Torvalds	select FOOTBRIDGE_ADDIN
96f999b8bdSMartin Michlmayr	help
97f999b8bdSMartin Michlmayr	  Support for Intel's EBSA285 companion chip.
981da177e4SLinus Torvalds
991da177e4SLinus Torvaldsconfig ARCH_EBSA110
1001da177e4SLinus Torvalds	bool "EBSA-110"
101f7e68bbfSRussell King	select ISA
1021da177e4SLinus Torvalds	help
1031da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
104*f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
1051da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
1061da177e4SLinus Torvalds	  parallel port.
1071da177e4SLinus Torvalds
1081da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
1091da177e4SLinus Torvalds	bool "FootBridge"
1101da177e4SLinus Torvalds	select FOOTBRIDGE
111f999b8bdSMartin Michlmayr	help
112f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
113f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1141da177e4SLinus Torvalds
1151da177e4SLinus Torvaldsconfig ARCH_INTEGRATOR
1161da177e4SLinus Torvalds	bool "Integrator"
1171da177e4SLinus Torvalds	select ARM_AMBA
1181da177e4SLinus Torvalds	select ICST525
119f999b8bdSMartin Michlmayr	help
120f999b8bdSMartin Michlmayr	  Support for ARM's Integrator platform.
1211da177e4SLinus Torvalds
1221da177e4SLinus Torvaldsconfig ARCH_IOP3XX
1231da177e4SLinus Torvalds	bool "IOP3xx-based"
124f7e68bbfSRussell King	select PCI
125f999b8bdSMartin Michlmayr	help
126f999b8bdSMartin Michlmayr	  Support for Intel's IOP3XX (XScale) family of processors.
1271da177e4SLinus Torvalds
1281da177e4SLinus Torvaldsconfig ARCH_IXP4XX
1291da177e4SLinus Torvalds	bool "IXP4xx-based"
1301da177e4SLinus Torvalds	select DMABOUNCE
131f7e68bbfSRussell King	select PCI
132f999b8bdSMartin Michlmayr	help
133f999b8bdSMartin Michlmayr	  Support for Intel's IXP4XX (XScale) family of processors.
1341da177e4SLinus Torvalds
1351da177e4SLinus Torvaldsconfig ARCH_IXP2000
1361da177e4SLinus Torvalds	bool "IXP2400/2800-based"
137f7e68bbfSRussell King	select PCI
138f999b8bdSMartin Michlmayr	help
139f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
1401da177e4SLinus Torvalds
1411da177e4SLinus Torvaldsconfig ARCH_L7200
1421da177e4SLinus Torvalds	bool "LinkUp-L7200"
1431da177e4SLinus Torvalds	select FIQ
1441da177e4SLinus Torvalds	help
1451da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
1461da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
1471da177e4SLinus Torvalds	  Information on this board can be obtained at:
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
1501da177e4SLinus Torvalds
1511da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
1521da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
1531da177e4SLinus Torvalds
1541da177e4SLinus Torvaldsconfig ARCH_PXA
1551da177e4SLinus Torvalds	bool "PXA2xx-based"
156f999b8bdSMartin Michlmayr	help
157f999b8bdSMartin Michlmayr	  Support for Intel's PXA2XX processor line.
1581da177e4SLinus Torvalds
1591da177e4SLinus Torvaldsconfig ARCH_RPC
1601da177e4SLinus Torvalds	bool "RiscPC"
1611da177e4SLinus Torvalds	select ARCH_ACORN
1621da177e4SLinus Torvalds	select FIQ
1631da177e4SLinus Torvalds	select TIMER_ACORN
164a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
165065909b9SRussell King	select ISA_DMA_API
1661da177e4SLinus Torvalds	help
1671da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
1681da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
1691da177e4SLinus Torvalds
1701da177e4SLinus Torvaldsconfig ARCH_SA1100
1711da177e4SLinus Torvalds	bool "SA1100-based"
172f7e68bbfSRussell King	select ISA
1733cd9e19eSRussell King	select ARCH_DISCONTIGMEM_ENABLE
174f999b8bdSMartin Michlmayr	help
175f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
1761da177e4SLinus Torvalds
1771da177e4SLinus Torvaldsconfig ARCH_S3C2410
1781da177e4SLinus Torvalds	bool "Samsung S3C2410"
1791da177e4SLinus Torvalds	help
1801da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
1811da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
182*f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
1831da177e4SLinus Torvalds
1841da177e4SLinus Torvaldsconfig ARCH_SHARK
1851da177e4SLinus Torvalds	bool "Shark"
186f7e68bbfSRussell King	select ISA
187f7e68bbfSRussell King	select ISA_DMA
188f7e68bbfSRussell King	select PCI
189f999b8bdSMartin Michlmayr	help
190f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
191f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
1921da177e4SLinus Torvalds
1931da177e4SLinus Torvaldsconfig ARCH_LH7A40X
1941da177e4SLinus Torvalds	bool "Sharp LH7A40X"
1951da177e4SLinus Torvalds	help
1961da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
1971da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
1981da177e4SLinus Torvalds	  core with a wide array of integrated devices for
1991da177e4SLinus Torvalds	  hand-held and low-power applications.
2001da177e4SLinus Torvalds
2011da177e4SLinus Torvaldsconfig ARCH_OMAP
2021da177e4SLinus Torvalds	bool "TI OMAP"
203f999b8bdSMartin Michlmayr	help
204f999b8bdSMartin Michlmayr	  Support for TI's OMAP platform (OMAP1 and OMAP2).
2051da177e4SLinus Torvalds
2061da177e4SLinus Torvaldsconfig ARCH_VERSATILE
2071da177e4SLinus Torvalds	bool "Versatile"
2081da177e4SLinus Torvalds	select ARM_AMBA
209fa0fe48fSRussell King	select ARM_VIC
2101da177e4SLinus Torvalds	select ICST307
2111da177e4SLinus Torvalds	help
2121da177e4SLinus Torvalds	  This enables support for ARM Ltd Versatile board.
2131da177e4SLinus Torvalds
2148ad68bbfSCatalin Marinasconfig ARCH_REALVIEW
2158ad68bbfSCatalin Marinas	bool "RealView"
2168ad68bbfSCatalin Marinas	select ARM_AMBA
2178ad68bbfSCatalin Marinas	select ICST307
2188ad68bbfSCatalin Marinas	help
2198ad68bbfSCatalin Marinas	  This enables support for ARM Ltd RealView boards.
2208ad68bbfSCatalin Marinas
2211da177e4SLinus Torvaldsconfig ARCH_IMX
2221da177e4SLinus Torvalds	bool "IMX"
223f999b8bdSMartin Michlmayr	help
224f999b8bdSMartin Michlmayr	  Support for Motorola's i.MX family of processors (MX1, MXL).
2251da177e4SLinus Torvalds
2261da177e4SLinus Torvaldsconfig ARCH_H720X
2271da177e4SLinus Torvalds	bool "Hynix-HMS720x-based"
228065909b9SRussell King	select ISA_DMA_API
2291da177e4SLinus Torvalds	help
2301da177e4SLinus Torvalds	  This enables support for systems based on the Hynix HMS720x
2311da177e4SLinus Torvalds
232038c5b60SBellido Nicolasconfig ARCH_AAEC2000
233038c5b60SBellido Nicolas	bool "Agilent AAEC-2000 based"
234049eb329SBellido Nicolas	select ARM_AMBA
235038c5b60SBellido Nicolas	help
236038c5b60SBellido Nicolas	  This enables support for systems based on the Agilent AAEC-2000
237038c5b60SBellido Nicolas
23873a59c1cSSAN Peopleconfig ARCH_AT91RM9200
23973a59c1cSSAN People	bool "AT91RM9200"
24073a59c1cSSAN People	help
241f999b8bdSMartin Michlmayr	  Say Y here if you intend to run this kernel on an Atmel
242f999b8bdSMartin Michlmayr	  AT91RM9200-based board.
24373a59c1cSSAN People
2441da177e4SLinus Torvaldsendchoice
2451da177e4SLinus Torvalds
2461da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
2471da177e4SLinus Torvalds
2481da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
2491da177e4SLinus Torvalds
2501da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
2511da177e4SLinus Torvalds
2521da177e4SLinus Torvaldssource "arch/arm/mach-iop3xx/Kconfig"
2531da177e4SLinus Torvalds
2541da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
2551da177e4SLinus Torvalds
2561da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
2571da177e4SLinus Torvalds
2581da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig"
2591da177e4SLinus Torvalds
2601da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig"
2611da177e4SLinus Torvalds
262d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
263d48af15eSTony Lindgren
264d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
2651da177e4SLinus Torvalds
2661dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
2671dbae815STony Lindgren
2681da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
2691da177e4SLinus Torvalds
2701da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig"
2711da177e4SLinus Torvalds
2721da177e4SLinus Torvaldssource "arch/arm/mach-imx/Kconfig"
2731da177e4SLinus Torvalds
2741da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig"
2751da177e4SLinus Torvalds
2761da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
2771da177e4SLinus Torvalds
278038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig"
279038c5b60SBellido Nicolas
2808ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig"
2818ad68bbfSCatalin Marinas
28273a59c1cSSAN Peoplesource "arch/arm/mach-at91rm9200/Kconfig"
28373a59c1cSSAN People
2841da177e4SLinus Torvalds# Definitions to make life easier
2851da177e4SLinus Torvaldsconfig ARCH_ACORN
2861da177e4SLinus Torvalds	bool
2871da177e4SLinus Torvalds
2881da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
2891da177e4SLinus Torvalds
2901da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
2911da177e4SLinus Torvaldsconfig XSCALE_PMU
2921da177e4SLinus Torvalds	bool
2931da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
2941da177e4SLinus Torvalds	default y
2951da177e4SLinus Torvalds
2961da177e4SLinus Torvaldsendmenu
2971da177e4SLinus Torvalds
2981da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
2991da177e4SLinus Torvalds
3001da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
3011da177e4SLinus Torvalds	int
3021da177e4SLinus Torvalds	depends on SA1111
3031da177e4SLinus Torvalds	default "9"
3041da177e4SLinus Torvalds
3051da177e4SLinus Torvaldsmenu "Bus support"
3061da177e4SLinus Torvalds
3071da177e4SLinus Torvaldsconfig ARM_AMBA
3081da177e4SLinus Torvalds	bool
3091da177e4SLinus Torvalds
3101da177e4SLinus Torvaldsconfig ISA
3111da177e4SLinus Torvalds	bool
3121da177e4SLinus Torvalds	help
3131da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
3141da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
3151da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
3161da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
3171da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
3181da177e4SLinus Torvalds
319065909b9SRussell King# Select ISA DMA controller support
3201da177e4SLinus Torvaldsconfig ISA_DMA
3211da177e4SLinus Torvalds	bool
322065909b9SRussell King	select ISA_DMA_API
3231da177e4SLinus Torvalds
324065909b9SRussell King# Select ISA DMA interface
3255cae841bSAl Viroconfig ISA_DMA_API
3265cae841bSAl Viro	bool
3275cae841bSAl Viro
3281da177e4SLinus Torvaldsconfig PCI
329c0da085aSCatalin Marinas	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
3301da177e4SLinus Torvalds	help
3311da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
3321da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
3331da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
3341da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
3351da177e4SLinus Torvalds
3361da177e4SLinus Torvalds	  The PCI-HOWTO, available from
3371da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>, contains valuable
3381da177e4SLinus Torvalds	  information about which PCI hardware does work under Linux and which
3391da177e4SLinus Torvalds	  doesn't.
3401da177e4SLinus Torvalds
3411da177e4SLinus Torvalds# Select the host bridge type
3421da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
3431da177e4SLinus Torvalds	bool
3441da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
3451da177e4SLinus Torvalds	default y
3461da177e4SLinus Torvalds
3471da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
3481da177e4SLinus Torvalds
3491da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
3501da177e4SLinus Torvalds
3511da177e4SLinus Torvaldsendmenu
3521da177e4SLinus Torvalds
3531da177e4SLinus Torvaldsmenu "Kernel Features"
3541da177e4SLinus Torvalds
3551da177e4SLinus Torvaldsconfig SMP
3561da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
357f6db449cSRussell King	depends on EXPERIMENTAL && REALVIEW_MPCORE
3581da177e4SLinus Torvalds	help
3591da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
3601da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
3611da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
3621da177e4SLinus Torvalds
3631da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
3641da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
3651da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
3661da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
3671da177e4SLinus Torvalds	  run faster if you say N here.
3681da177e4SLinus Torvalds
36912c62c2eSArthur Othieno	  See also the <file:Documentation/smp.txt>,
37012c62c2eSArthur Othieno	  <file:Documentation/i386/IO-APIC.txt>,
3711da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
3721da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
3731da177e4SLinus Torvalds
3741da177e4SLinus Torvalds	  If you don't know what to do here, say N.
3751da177e4SLinus Torvalds
3761da177e4SLinus Torvaldsconfig NR_CPUS
3771da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
3781da177e4SLinus Torvalds	range 2 32
3791da177e4SLinus Torvalds	depends on SMP
3801da177e4SLinus Torvalds	default "4"
3811da177e4SLinus Torvalds
382a054a811SRussell Kingconfig HOTPLUG_CPU
383a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
384a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
385a054a811SRussell King	help
386a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
387a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
388a054a811SRussell King
38937ee16aeSRussell Kingconfig LOCAL_TIMERS
39037ee16aeSRussell King	bool "Use local timer interrupts"
3912a98beb6SRussell King	depends on SMP && REALVIEW_MPCORE
39237ee16aeSRussell King	default y
39337ee16aeSRussell King	help
39437ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
39537ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
39637ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
39737ee16aeSRussell King	  "thundering herd" at every timer tick.
39837ee16aeSRussell King
3991da177e4SLinus Torvaldsconfig PREEMPT
4001da177e4SLinus Torvalds	bool "Preemptible Kernel (EXPERIMENTAL)"
4011da177e4SLinus Torvalds	depends on EXPERIMENTAL
4021da177e4SLinus Torvalds	help
4031da177e4SLinus Torvalds	  This option reduces the latency of the kernel when reacting to
4041da177e4SLinus Torvalds	  real-time or interactive events by allowing a low priority process to
4051da177e4SLinus Torvalds	  be preempted even if it is in kernel mode executing a system call.
4061da177e4SLinus Torvalds	  This allows applications to run more reliably even when the system is
4071da177e4SLinus Torvalds	  under load.
4081da177e4SLinus Torvalds
4091da177e4SLinus Torvalds	  Say Y here if you are building a kernel for a desktop, embedded
4101da177e4SLinus Torvalds	  or real-time system.  Say N if you are unsure.
4111da177e4SLinus Torvalds
4128749af68SRussell Kingconfig NO_IDLE_HZ
4138749af68SRussell King	bool "Dynamic tick timer"
4148749af68SRussell King	help
4158749af68SRussell King	  Select this option if you want to disable continuous timer ticks
4168749af68SRussell King	  and have them programmed to occur as required. This option saves
4178749af68SRussell King	  power as the system can remain in idle state for longer.
4188749af68SRussell King
4198749af68SRussell King	  By default dynamic tick is disabled during the boot, and can be
4208749af68SRussell King	  manually enabled with:
4218749af68SRussell King
4228749af68SRussell King	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick
4238749af68SRussell King
4248749af68SRussell King	  Alternatively, if you want dynamic tick automatically enabled
4258749af68SRussell King	  during boot, pass "dyntick=enable" via the kernel command string.
4268749af68SRussell King
427f2be64b3STony Lindgren	  Please note that dynamic tick may affect the accuracy of
428f2be64b3STony Lindgren	  timekeeping on some platforms depending on the implementation.
429569d2c34SNicolas Pitre	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
430569d2c34SNicolas Pitre	  to have accurate timekeeping with dynamic tick.
431f2be64b3STony Lindgren
432704bdda0SNicolas Pitreconfig AEABI
433704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
434704bdda0SNicolas Pitre	help
435704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
436704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
437704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
438704bdda0SNicolas Pitre
439704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
440704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
441704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
442704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
443704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
444704bdda0SNicolas Pitre
445704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
446704bdda0SNicolas Pitre
4476c90c872SNicolas Pitreconfig OABI_COMPAT
4486c90c872SNicolas Pitre	bool "Allow old ABI binaries to run with this kernel"
4496c90c872SNicolas Pitre	depends on AEABI
4506c90c872SNicolas Pitre	default y
4516c90c872SNicolas Pitre	help
4526c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
4536c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
4546c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
4556c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
4566c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
4576c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
4586c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
4596c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
4606c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
4616c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
4626c90c872SNicolas Pitre	  at all). If in doubt say Y.
4636c90c872SNicolas Pitre
4643f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
4651da177e4SLinus Torvalds	bool
466f7e68bbfSRussell King	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
4671da177e4SLinus Torvalds	help
4681da177e4SLinus Torvalds	  Say Y to support efficient handling of discontiguous physical memory,
4691da177e4SLinus Torvalds	  for architectures which are either NUMA (Non-Uniform Memory Access)
4701da177e4SLinus Torvalds	  or have huge holes in the physical address space for other reasons.
4711da177e4SLinus Torvalds	  See <file:Documentation/vm/numa> for more.
4721da177e4SLinus Torvalds
4733f22ab27SDave Hansensource "mm/Kconfig"
4743f22ab27SDave Hansen
4751da177e4SLinus Torvaldsconfig LEDS
4761da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
4771da177e4SLinus Torvalds	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
4781da177e4SLinus Torvalds		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
4791da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
4801da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
48173a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
48273a59c1cSSAN People		   ARCH_AT91RM9200
4831da177e4SLinus Torvalds	help
4841da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
4851da177e4SLinus Torvalds	  to provide useful information about your current system status.
4861da177e4SLinus Torvalds
4871da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
4881da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
4891da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
4901da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
4911da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
4921da177e4SLinus Torvalds	  system, but the driver will do nothing.
4931da177e4SLinus Torvalds
4941da177e4SLinus Torvaldsconfig LEDS_TIMER
4951da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
4961da177e4SLinus Torvalds			    MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
4971da177e4SLinus Torvalds	depends on LEDS
4981da177e4SLinus Torvalds	default y if ARCH_EBSA110
4991da177e4SLinus Torvalds	help
5001da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
5011da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
5021da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
5031da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
5041da177e4SLinus Torvalds	  debugging unstable kernels.
5051da177e4SLinus Torvalds
5061da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5071da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5081da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5091da177e4SLinus Torvalds
5101da177e4SLinus Torvaldsconfig LEDS_CPU
5111da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
5121da177e4SLinus Torvalds			!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5131da177e4SLinus Torvalds	depends on LEDS
5141da177e4SLinus Torvalds	help
5151da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
5161da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
5171da177e4SLinus Torvalds	  is not currently executing.
5181da177e4SLinus Torvalds
5191da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5201da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5211da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5221da177e4SLinus Torvalds
5231da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
5241da177e4SLinus Torvalds	bool
5251da177e4SLinus Torvalds	default y if !ARCH_EBSA110
5261da177e4SLinus Torvalds	help
5271da177e4SLinus Torvalds	  ARM processors can not fetch/store information which is not
5281da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
5291da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
5301da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
5311da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
5321da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
5331da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
5341da177e4SLinus Torvalds
5351da177e4SLinus Torvaldsendmenu
5361da177e4SLinus Torvalds
5371da177e4SLinus Torvaldsmenu "Boot options"
5381da177e4SLinus Torvalds
5391da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
5401da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
5411da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
5421da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
5431da177e4SLinus Torvalds	default "0"
5441da177e4SLinus Torvalds	help
5451da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
5461da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
5471da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5481da177e4SLinus Torvalds	  value in their defconfig file.
5491da177e4SLinus Torvalds
5501da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5511da177e4SLinus Torvalds
5521da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
5531da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
5541da177e4SLinus Torvalds	default "0"
5551da177e4SLinus Torvalds	help
5561da177e4SLinus Torvalds	  The base address of 64KiB of read/write memory in the target
5571da177e4SLinus Torvalds	  for the ROM-able zImage, which must be available while the
5581da177e4SLinus Torvalds	  decompressor is running.  Platforms which normally make use of
5591da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5601da177e4SLinus Torvalds	  value in their defconfig file.
5611da177e4SLinus Torvalds
5621da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5631da177e4SLinus Torvalds
5641da177e4SLinus Torvaldsconfig ZBOOT_ROM
5651da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
5661da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
5671da177e4SLinus Torvalds	help
5681da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
5691da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
5701da177e4SLinus Torvalds
5711da177e4SLinus Torvaldsconfig CMDLINE
5721da177e4SLinus Torvalds	string "Default kernel command string"
5731da177e4SLinus Torvalds	default ""
5741da177e4SLinus Torvalds	help
5751da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
5761da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
5771da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
5781da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
5791da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
5801da177e4SLinus Torvalds
5811da177e4SLinus Torvaldsconfig XIP_KERNEL
5821da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
5831da177e4SLinus Torvalds	depends on !ZBOOT_ROM
5841da177e4SLinus Torvalds	help
5851da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
5861da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
5871da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
5881da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
5891da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
5901da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
5911da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
5921da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
5931da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
5941da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
5951da177e4SLinus Torvalds
5961da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
5971da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
5981da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
5991da177e4SLinus Torvalds
6001da177e4SLinus Torvalds	  If unsure, say N.
6011da177e4SLinus Torvalds
6021da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
6031da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
6041da177e4SLinus Torvalds	depends on XIP_KERNEL
6051da177e4SLinus Torvalds	default "0x00080000"
6061da177e4SLinus Torvalds	help
6071da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
6081da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
6091da177e4SLinus Torvalds	  own flash usage.
6101da177e4SLinus Torvalds
6111da177e4SLinus Torvaldsendmenu
6121da177e4SLinus Torvalds
613ec6bced6STony Lindgrenif (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
6141da177e4SLinus Torvalds
6151da177e4SLinus Torvaldsmenu "CPU Frequency scaling"
6161da177e4SLinus Torvalds
6171da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
6181da177e4SLinus Torvalds
6191da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
6201da177e4SLinus Torvalds	bool
62107c6d48fSVincent Sanders	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
6221da177e4SLinus Torvalds	default y
6231da177e4SLinus Torvalds
6241da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
6251da177e4SLinus Torvalds	bool
6261da177e4SLinus Torvalds	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
6271da177e4SLinus Torvalds	default y
6281da177e4SLinus Torvalds
6291da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
6301da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
6311da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
6321da177e4SLinus Torvalds	default y
6331da177e4SLinus Torvalds	help
6341da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
6351da177e4SLinus Torvalds
6361da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
6371da177e4SLinus Torvalds
6381da177e4SLinus Torvalds	  If in doubt, say Y.
6391da177e4SLinus Torvalds
6401da177e4SLinus Torvaldsendmenu
6411da177e4SLinus Torvalds
6421da177e4SLinus Torvaldsendif
6431da177e4SLinus Torvalds
6441da177e4SLinus Torvaldsmenu "Floating point emulation"
6451da177e4SLinus Torvalds
6461da177e4SLinus Torvaldscomment "At least one emulation must be selected"
6471da177e4SLinus Torvalds
6481da177e4SLinus Torvaldsconfig FPE_NWFPE
6491da177e4SLinus Torvalds	bool "NWFPE math emulation"
6508993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
6511da177e4SLinus Torvalds	---help---
6521da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
6531da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
6541da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
6551da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
6561da177e4SLinus Torvalds
6571da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
6581da177e4SLinus Torvalds	  early in the bootup.
6591da177e4SLinus Torvalds
6601da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
6611da177e4SLinus Torvalds	bool "Support extended precision"
662bedf142bSLennert Buytenhek	depends on FPE_NWFPE
6631da177e4SLinus Torvalds	help
6641da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
6651da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
6661da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
6671da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
6681da177e4SLinus Torvalds	  floating point emulator without any good reason.
6691da177e4SLinus Torvalds
6701da177e4SLinus Torvalds	  You almost surely want to say N here.
6711da177e4SLinus Torvalds
6721da177e4SLinus Torvaldsconfig FPE_FASTFPE
6731da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
6748993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
6751da177e4SLinus Torvalds	---help---
6761da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
6771da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
6781da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
6791da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
6801da177e4SLinus Torvalds
6811da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
6821da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
6831da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
6841da177e4SLinus Torvalds	  choose NWFPE.
6851da177e4SLinus Torvalds
6861da177e4SLinus Torvaldsconfig VFP
6871da177e4SLinus Torvalds	bool "VFP-format floating point maths"
6881da177e4SLinus Torvalds	depends on CPU_V6 || CPU_ARM926T
6891da177e4SLinus Torvalds	help
6901da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
6911da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
6921da177e4SLinus Torvalds
6931da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
6941da177e4SLinus Torvalds	  release notes and additional status information.
6951da177e4SLinus Torvalds
6961da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
6971da177e4SLinus Torvalds
6981da177e4SLinus Torvaldsendmenu
6991da177e4SLinus Torvalds
7001da177e4SLinus Torvaldsmenu "Userspace binary formats"
7011da177e4SLinus Torvalds
7021da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
7031da177e4SLinus Torvalds
7041da177e4SLinus Torvaldsconfig ARTHUR
7051da177e4SLinus Torvalds	tristate "RISC OS personality"
706704bdda0SNicolas Pitre	depends on !AEABI
7071da177e4SLinus Torvalds	help
7081da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
7091da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
7101da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
7111da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
7121da177e4SLinus Torvalds	  will be called arthur).
7131da177e4SLinus Torvalds
7141da177e4SLinus Torvaldsendmenu
7151da177e4SLinus Torvalds
7161da177e4SLinus Torvaldsmenu "Power management options"
7171da177e4SLinus Torvalds
718eceab4acSRussell Kingsource "kernel/power/Kconfig"
7191da177e4SLinus Torvalds
7201da177e4SLinus Torvaldsconfig APM
7211da177e4SLinus Torvalds	tristate "Advanced Power Management Emulation"
7221da177e4SLinus Torvalds	---help---
7231da177e4SLinus Torvalds	  APM is a BIOS specification for saving power using several different
7241da177e4SLinus Torvalds	  techniques. This is mostly useful for battery powered laptops with
7251da177e4SLinus Torvalds	  APM compliant BIOSes. If you say Y here, the system time will be
7261da177e4SLinus Torvalds	  reset after a RESUME operation, the /proc/apm device will provide
7271da177e4SLinus Torvalds	  battery status information, and user-space programs will receive
7281da177e4SLinus Torvalds	  notification of APM "events" (e.g. battery status change).
7291da177e4SLinus Torvalds
7301da177e4SLinus Torvalds	  In order to use APM, you will need supporting software. For location
7311da177e4SLinus Torvalds	  and more information, read <file:Documentation/pm.txt> and the
7321da177e4SLinus Torvalds	  Battery Powered Linux mini-HOWTO, available from
7331da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>.
7341da177e4SLinus Torvalds
7351da177e4SLinus Torvalds	  This driver does not spin down disk drives (see the hdparm(8)
7361da177e4SLinus Torvalds	  manpage ("man 8 hdparm") for that), and it doesn't turn off
7371da177e4SLinus Torvalds	  VESA-compliant "green" monitors.
7381da177e4SLinus Torvalds
7391da177e4SLinus Torvalds	  Generally, if you don't have a battery in your machine, there isn't
7401da177e4SLinus Torvalds	  much point in using this driver and you should say N. If you get
7411da177e4SLinus Torvalds	  random kernel OOPSes or reboots that don't seem to be related to
7421da177e4SLinus Torvalds	  anything, try disabling/enabling this option (or disabling/enabling
7431da177e4SLinus Torvalds	  APM in your BIOS).
7441da177e4SLinus Torvalds
7451da177e4SLinus Torvaldsendmenu
7461da177e4SLinus Torvalds
747d5950b43SSam Ravnborgsource "net/Kconfig"
748d5950b43SSam Ravnborg
7491da177e4SLinus Torvaldsmenu "Device Drivers"
7501da177e4SLinus Torvalds
7511da177e4SLinus Torvaldssource "drivers/base/Kconfig"
7521da177e4SLinus Torvalds
753c35bf4a5SPavel Macheksource "drivers/connector/Kconfig"
754c35bf4a5SPavel Machek
7551da177e4SLinus Torvaldsif ALIGNMENT_TRAP
7561da177e4SLinus Torvaldssource "drivers/mtd/Kconfig"
7571da177e4SLinus Torvaldsendif
7581da177e4SLinus Torvalds
7591da177e4SLinus Torvaldssource "drivers/parport/Kconfig"
7601da177e4SLinus Torvalds
7611da177e4SLinus Torvaldssource "drivers/pnp/Kconfig"
7621da177e4SLinus Torvalds
7631da177e4SLinus Torvaldssource "drivers/block/Kconfig"
7641da177e4SLinus Torvalds
7651da177e4SLinus Torvaldssource "drivers/acorn/block/Kconfig"
7661da177e4SLinus Torvalds
767bb011b8eSDavid Brownellif PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
768bb011b8eSDavid Brownell	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
769d56c524aSRussell King	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
7701da177e4SLinus Torvaldssource "drivers/ide/Kconfig"
7711da177e4SLinus Torvaldsendif
7721da177e4SLinus Torvalds
7731da177e4SLinus Torvaldssource "drivers/scsi/Kconfig"
7741da177e4SLinus Torvalds
7751da177e4SLinus Torvaldssource "drivers/md/Kconfig"
7761da177e4SLinus Torvalds
7771da177e4SLinus Torvaldssource "drivers/message/fusion/Kconfig"
7781da177e4SLinus Torvalds
7791da177e4SLinus Torvaldssource "drivers/ieee1394/Kconfig"
7801da177e4SLinus Torvalds
7811da177e4SLinus Torvaldssource "drivers/message/i2o/Kconfig"
7821da177e4SLinus Torvalds
783d5950b43SSam Ravnborgsource "drivers/net/Kconfig"
7841da177e4SLinus Torvalds
7851da177e4SLinus Torvaldssource "drivers/isdn/Kconfig"
7861da177e4SLinus Torvalds
7871da177e4SLinus Torvalds# input before char - char/joystick depends on it. As does USB.
7881da177e4SLinus Torvalds
7891da177e4SLinus Torvaldssource "drivers/input/Kconfig"
7901da177e4SLinus Torvalds
7911da177e4SLinus Torvaldssource "drivers/char/Kconfig"
7921da177e4SLinus Torvalds
7931da177e4SLinus Torvaldssource "drivers/i2c/Kconfig"
7941da177e4SLinus Torvalds
7958ae12a0dSDavid Brownellsource "drivers/spi/Kconfig"
7968ae12a0dSDavid Brownell
797ad2f931dSJean Delvaresource "drivers/hwmon/Kconfig"
798ad2f931dSJean Delvare
7991da177e4SLinus Torvalds#source "drivers/l3/Kconfig"
8001da177e4SLinus Torvalds
8011da177e4SLinus Torvaldssource "drivers/misc/Kconfig"
8021da177e4SLinus Torvalds
803a4e137abSRussell Kingsource "drivers/mfd/Kconfig"
804a4e137abSRussell King
8051da177e4SLinus Torvaldssource "drivers/media/Kconfig"
8061da177e4SLinus Torvalds
8071da177e4SLinus Torvaldssource "drivers/video/Kconfig"
8081da177e4SLinus Torvalds
8091da177e4SLinus Torvaldssource "sound/Kconfig"
8101da177e4SLinus Torvalds
8111da177e4SLinus Torvaldssource "drivers/usb/Kconfig"
8121da177e4SLinus Torvalds
8131da177e4SLinus Torvaldssource "drivers/mmc/Kconfig"
8141da177e4SLinus Torvalds
8151da177e4SLinus Torvaldsendmenu
8161da177e4SLinus Torvalds
8171da177e4SLinus Torvaldssource "fs/Kconfig"
8181da177e4SLinus Torvalds
8191da177e4SLinus Torvaldssource "arch/arm/oprofile/Kconfig"
8201da177e4SLinus Torvalds
8211da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
8221da177e4SLinus Torvalds
8231da177e4SLinus Torvaldssource "security/Kconfig"
8241da177e4SLinus Torvalds
8251da177e4SLinus Torvaldssource "crypto/Kconfig"
8261da177e4SLinus Torvalds
8271da177e4SLinus Torvaldssource "lib/Kconfig"
828