xref: /linux/arch/arm/Kconfig (revision 04916c0ef482335cb0ae575dbc5a1d97619840cd)
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
1111da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
1121da177e4SLinus Torvalds	bool "FootBridge"
1131da177e4SLinus Torvalds	select FOOTBRIDGE
114f999b8bdSMartin Michlmayr	help
115f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
116f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1171da177e4SLinus Torvalds
1181da177e4SLinus Torvaldsconfig ARCH_INTEGRATOR
1191da177e4SLinus Torvalds	bool "Integrator"
1201da177e4SLinus Torvalds	select ARM_AMBA
1211da177e4SLinus Torvalds	select ICST525
122f999b8bdSMartin Michlmayr	help
123f999b8bdSMartin Michlmayr	  Support for ARM's Integrator platform.
1241da177e4SLinus Torvalds
1251da177e4SLinus Torvaldsconfig ARCH_IOP3XX
1261da177e4SLinus Torvalds	bool "IOP3xx-based"
127f7e68bbfSRussell King	select PCI
128f999b8bdSMartin Michlmayr	help
129f999b8bdSMartin Michlmayr	  Support for Intel's IOP3XX (XScale) family of processors.
1301da177e4SLinus Torvalds
1311da177e4SLinus Torvaldsconfig ARCH_IXP4XX
1321da177e4SLinus Torvalds	bool "IXP4xx-based"
1331da177e4SLinus Torvalds	select DMABOUNCE
134f7e68bbfSRussell King	select PCI
135f999b8bdSMartin Michlmayr	help
136f999b8bdSMartin Michlmayr	  Support for Intel's IXP4XX (XScale) family of processors.
1371da177e4SLinus Torvalds
1381da177e4SLinus Torvaldsconfig ARCH_IXP2000
1391da177e4SLinus Torvalds	bool "IXP2400/2800-based"
140f7e68bbfSRussell King	select PCI
141f999b8bdSMartin Michlmayr	help
142f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
1431da177e4SLinus Torvalds
1441da177e4SLinus Torvaldsconfig ARCH_L7200
1451da177e4SLinus Torvalds	bool "LinkUp-L7200"
1461da177e4SLinus Torvalds	select FIQ
1471da177e4SLinus Torvalds	help
1481da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
1491da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
1501da177e4SLinus Torvalds	  Information on this board can be obtained at:
1511da177e4SLinus Torvalds
1521da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
1531da177e4SLinus Torvalds
1541da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
1551da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
1561da177e4SLinus Torvalds
1571da177e4SLinus Torvaldsconfig ARCH_PXA
1581da177e4SLinus Torvalds	bool "PXA2xx-based"
159034d2f5aSAl Viro	select ARCH_MTD_XIP
160f999b8bdSMartin Michlmayr	help
161f999b8bdSMartin Michlmayr	  Support for Intel's PXA2XX processor line.
1621da177e4SLinus Torvalds
1631da177e4SLinus Torvaldsconfig ARCH_RPC
1641da177e4SLinus Torvalds	bool "RiscPC"
1651da177e4SLinus Torvalds	select ARCH_ACORN
1661da177e4SLinus Torvalds	select FIQ
1671da177e4SLinus Torvalds	select TIMER_ACORN
168a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
169065909b9SRussell King	select ISA_DMA_API
1701da177e4SLinus Torvalds	help
1711da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
1721da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
1731da177e4SLinus Torvalds
1741da177e4SLinus Torvaldsconfig ARCH_SA1100
1751da177e4SLinus Torvalds	bool "SA1100-based"
176f7e68bbfSRussell King	select ISA
1773cd9e19eSRussell King	select ARCH_DISCONTIGMEM_ENABLE
178034d2f5aSAl Viro	select ARCH_MTD_XIP
179f999b8bdSMartin Michlmayr	help
180f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
1811da177e4SLinus Torvalds
1821da177e4SLinus Torvaldsconfig ARCH_S3C2410
1831da177e4SLinus Torvalds	bool "Samsung S3C2410"
1841da177e4SLinus Torvalds	help
1851da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
1861da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
187f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
1881da177e4SLinus Torvalds
1891da177e4SLinus Torvaldsconfig ARCH_SHARK
1901da177e4SLinus Torvalds	bool "Shark"
191f7e68bbfSRussell King	select ISA
192f7e68bbfSRussell King	select ISA_DMA
193f7e68bbfSRussell King	select PCI
194f999b8bdSMartin Michlmayr	help
195f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
196f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
1971da177e4SLinus Torvalds
1981da177e4SLinus Torvaldsconfig ARCH_LH7A40X
1991da177e4SLinus Torvalds	bool "Sharp LH7A40X"
2001da177e4SLinus Torvalds	help
2011da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
2021da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
2031da177e4SLinus Torvalds	  core with a wide array of integrated devices for
2041da177e4SLinus Torvalds	  hand-held and low-power applications.
2051da177e4SLinus Torvalds
2061da177e4SLinus Torvaldsconfig ARCH_OMAP
2071da177e4SLinus Torvalds	bool "TI OMAP"
208f999b8bdSMartin Michlmayr	help
209f999b8bdSMartin Michlmayr	  Support for TI's OMAP platform (OMAP1 and OMAP2).
2101da177e4SLinus Torvalds
2111da177e4SLinus Torvaldsconfig ARCH_VERSATILE
2121da177e4SLinus Torvalds	bool "Versatile"
2131da177e4SLinus Torvalds	select ARM_AMBA
214fa0fe48fSRussell King	select ARM_VIC
2151da177e4SLinus Torvalds	select ICST307
2161da177e4SLinus Torvalds	help
2171da177e4SLinus Torvalds	  This enables support for ARM Ltd Versatile board.
2181da177e4SLinus Torvalds
2198ad68bbfSCatalin Marinasconfig ARCH_REALVIEW
2208ad68bbfSCatalin Marinas	bool "RealView"
2218ad68bbfSCatalin Marinas	select ARM_AMBA
2228ad68bbfSCatalin Marinas	select ICST307
2238ad68bbfSCatalin Marinas	help
2248ad68bbfSCatalin Marinas	  This enables support for ARM Ltd RealView boards.
2258ad68bbfSCatalin Marinas
2261da177e4SLinus Torvaldsconfig ARCH_IMX
2271da177e4SLinus Torvalds	bool "IMX"
228f999b8bdSMartin Michlmayr	help
229f999b8bdSMartin Michlmayr	  Support for Motorola's i.MX family of processors (MX1, MXL).
2301da177e4SLinus Torvalds
2311da177e4SLinus Torvaldsconfig ARCH_H720X
2321da177e4SLinus Torvalds	bool "Hynix-HMS720x-based"
233065909b9SRussell King	select ISA_DMA_API
2341da177e4SLinus Torvalds	help
2351da177e4SLinus Torvalds	  This enables support for systems based on the Hynix HMS720x
2361da177e4SLinus Torvalds
237038c5b60SBellido Nicolasconfig ARCH_AAEC2000
238038c5b60SBellido Nicolas	bool "Agilent AAEC-2000 based"
239049eb329SBellido Nicolas	select ARM_AMBA
240038c5b60SBellido Nicolas	help
241038c5b60SBellido Nicolas	  This enables support for systems based on the Agilent AAEC-2000
242038c5b60SBellido Nicolas
24373a59c1cSSAN Peopleconfig ARCH_AT91RM9200
24473a59c1cSSAN People	bool "AT91RM9200"
24573a59c1cSSAN People	help
246f999b8bdSMartin Michlmayr	  Say Y here if you intend to run this kernel on an Atmel
247f999b8bdSMartin Michlmayr	  AT91RM9200-based board.
24873a59c1cSSAN People
2491da177e4SLinus Torvaldsendchoice
2501da177e4SLinus Torvalds
2511da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
2521da177e4SLinus Torvalds
2531da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
2541da177e4SLinus Torvalds
2551da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
2561da177e4SLinus Torvalds
2571da177e4SLinus Torvaldssource "arch/arm/mach-iop3xx/Kconfig"
2581da177e4SLinus Torvalds
2591da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
2601da177e4SLinus Torvalds
2611da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
2621da177e4SLinus Torvalds
2631da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig"
2641da177e4SLinus Torvalds
2651da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig"
2661da177e4SLinus Torvalds
267d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
268d48af15eSTony Lindgren
269d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
2701da177e4SLinus Torvalds
2711dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
2721dbae815STony Lindgren
2731da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
2741da177e4SLinus Torvalds
2751da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig"
2761da177e4SLinus Torvalds
2771da177e4SLinus Torvaldssource "arch/arm/mach-imx/Kconfig"
2781da177e4SLinus Torvalds
2791da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig"
2801da177e4SLinus Torvalds
2811da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
2821da177e4SLinus Torvalds
283038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig"
284038c5b60SBellido Nicolas
2858ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig"
2868ad68bbfSCatalin Marinas
28773a59c1cSSAN Peoplesource "arch/arm/mach-at91rm9200/Kconfig"
28873a59c1cSSAN People
2891da177e4SLinus Torvalds# Definitions to make life easier
2901da177e4SLinus Torvaldsconfig ARCH_ACORN
2911da177e4SLinus Torvalds	bool
2921da177e4SLinus Torvalds
2931da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
2941da177e4SLinus Torvalds
2951da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
2961da177e4SLinus Torvaldsconfig XSCALE_PMU
2971da177e4SLinus Torvalds	bool
2981da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
2991da177e4SLinus Torvalds	default y
3001da177e4SLinus Torvalds
3011da177e4SLinus Torvaldsendmenu
3021da177e4SLinus Torvalds
3031da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
3041da177e4SLinus Torvalds
3051da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
3061da177e4SLinus Torvalds	int
3071da177e4SLinus Torvalds	depends on SA1111
3081da177e4SLinus Torvalds	default "9"
3091da177e4SLinus Torvalds
3101da177e4SLinus Torvaldsmenu "Bus support"
3111da177e4SLinus Torvalds
3121da177e4SLinus Torvaldsconfig ARM_AMBA
3131da177e4SLinus Torvalds	bool
3141da177e4SLinus Torvalds
3151da177e4SLinus Torvaldsconfig ISA
3161da177e4SLinus Torvalds	bool
3171da177e4SLinus Torvalds	help
3181da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
3191da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
3201da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
3211da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
3221da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
3231da177e4SLinus Torvalds
324065909b9SRussell King# Select ISA DMA controller support
3251da177e4SLinus Torvaldsconfig ISA_DMA
3261da177e4SLinus Torvalds	bool
327065909b9SRussell King	select ISA_DMA_API
3281da177e4SLinus Torvalds
329065909b9SRussell King# Select ISA DMA interface
3305cae841bSAl Viroconfig ISA_DMA_API
3315cae841bSAl Viro	bool
3325cae841bSAl Viro
3331da177e4SLinus Torvaldsconfig PCI
334c0da085aSCatalin Marinas	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
3351da177e4SLinus Torvalds	help
3361da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
3371da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
3381da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
3391da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
3401da177e4SLinus Torvalds
3411da177e4SLinus Torvalds	  The PCI-HOWTO, available from
3421da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>, contains valuable
3431da177e4SLinus Torvalds	  information about which PCI hardware does work under Linux and which
3441da177e4SLinus Torvalds	  doesn't.
3451da177e4SLinus Torvalds
3461da177e4SLinus Torvalds# Select the host bridge type
3471da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
3481da177e4SLinus Torvalds	bool
3491da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
3501da177e4SLinus Torvalds	default y
3511da177e4SLinus Torvalds
3521da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
3531da177e4SLinus Torvalds
3541da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
3551da177e4SLinus Torvalds
3561da177e4SLinus Torvaldsendmenu
3571da177e4SLinus Torvalds
3581da177e4SLinus Torvaldsmenu "Kernel Features"
3591da177e4SLinus Torvalds
3601da177e4SLinus Torvaldsconfig SMP
3611da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
362f6db449cSRussell King	depends on EXPERIMENTAL && REALVIEW_MPCORE
3631da177e4SLinus Torvalds	help
3641da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
3651da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
3661da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
3671da177e4SLinus Torvalds
3681da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
3691da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
3701da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
3711da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
3721da177e4SLinus Torvalds	  run faster if you say N here.
3731da177e4SLinus Torvalds
37412c62c2eSArthur Othieno	  See also the <file:Documentation/smp.txt>,
37512c62c2eSArthur Othieno	  <file:Documentation/i386/IO-APIC.txt>,
3761da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
3771da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
3781da177e4SLinus Torvalds
3791da177e4SLinus Torvalds	  If you don't know what to do here, say N.
3801da177e4SLinus Torvalds
3811da177e4SLinus Torvaldsconfig NR_CPUS
3821da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
3831da177e4SLinus Torvalds	range 2 32
3841da177e4SLinus Torvalds	depends on SMP
3851da177e4SLinus Torvalds	default "4"
3861da177e4SLinus Torvalds
387a054a811SRussell Kingconfig HOTPLUG_CPU
388a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
389a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
390a054a811SRussell King	help
391a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
392a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
393a054a811SRussell King
39437ee16aeSRussell Kingconfig LOCAL_TIMERS
39537ee16aeSRussell King	bool "Use local timer interrupts"
3962a98beb6SRussell King	depends on SMP && REALVIEW_MPCORE
39737ee16aeSRussell King	default y
39837ee16aeSRussell King	help
39937ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
40037ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
40137ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
40237ee16aeSRussell King	  "thundering herd" at every timer tick.
40337ee16aeSRussell King
4041da177e4SLinus Torvaldsconfig PREEMPT
4051da177e4SLinus Torvalds	bool "Preemptible Kernel (EXPERIMENTAL)"
4061da177e4SLinus Torvalds	depends on EXPERIMENTAL
4071da177e4SLinus Torvalds	help
4081da177e4SLinus Torvalds	  This option reduces the latency of the kernel when reacting to
4091da177e4SLinus Torvalds	  real-time or interactive events by allowing a low priority process to
4101da177e4SLinus Torvalds	  be preempted even if it is in kernel mode executing a system call.
4111da177e4SLinus Torvalds	  This allows applications to run more reliably even when the system is
4121da177e4SLinus Torvalds	  under load.
4131da177e4SLinus Torvalds
4141da177e4SLinus Torvalds	  Say Y here if you are building a kernel for a desktop, embedded
4151da177e4SLinus Torvalds	  or real-time system.  Say N if you are unsure.
4161da177e4SLinus Torvalds
4178749af68SRussell Kingconfig NO_IDLE_HZ
4188749af68SRussell King	bool "Dynamic tick timer"
4198749af68SRussell King	help
4208749af68SRussell King	  Select this option if you want to disable continuous timer ticks
4218749af68SRussell King	  and have them programmed to occur as required. This option saves
4228749af68SRussell King	  power as the system can remain in idle state for longer.
4238749af68SRussell King
4248749af68SRussell King	  By default dynamic tick is disabled during the boot, and can be
4258749af68SRussell King	  manually enabled with:
4268749af68SRussell King
4278749af68SRussell King	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick
4288749af68SRussell King
4298749af68SRussell King	  Alternatively, if you want dynamic tick automatically enabled
4308749af68SRussell King	  during boot, pass "dyntick=enable" via the kernel command string.
4318749af68SRussell King
432f2be64b3STony Lindgren	  Please note that dynamic tick may affect the accuracy of
433f2be64b3STony Lindgren	  timekeeping on some platforms depending on the implementation.
434569d2c34SNicolas Pitre	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
435569d2c34SNicolas Pitre	  to have accurate timekeeping with dynamic tick.
436f2be64b3STony Lindgren
437704bdda0SNicolas Pitreconfig AEABI
438704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
439704bdda0SNicolas Pitre	help
440704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
441704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
442704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
443704bdda0SNicolas Pitre
444704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
445704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
446704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
447704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
448704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
449704bdda0SNicolas Pitre
450704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
451704bdda0SNicolas Pitre
4526c90c872SNicolas Pitreconfig OABI_COMPAT
453a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
45461c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
4556c90c872SNicolas Pitre	default y
4566c90c872SNicolas Pitre	help
4576c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
4586c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
4596c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
4606c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
4616c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
4626c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
4636c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
4646c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
4656c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
4666c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
4676c90c872SNicolas Pitre	  at all). If in doubt say Y.
4686c90c872SNicolas Pitre
4693f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
4701da177e4SLinus Torvalds	bool
471f7e68bbfSRussell King	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
4721da177e4SLinus Torvalds	help
4731da177e4SLinus Torvalds	  Say Y to support efficient handling of discontiguous physical memory,
4741da177e4SLinus Torvalds	  for architectures which are either NUMA (Non-Uniform Memory Access)
4751da177e4SLinus Torvalds	  or have huge holes in the physical address space for other reasons.
4761da177e4SLinus Torvalds	  See <file:Documentation/vm/numa> for more.
4771da177e4SLinus Torvalds
4783f22ab27SDave Hansensource "mm/Kconfig"
4793f22ab27SDave Hansen
4801da177e4SLinus Torvaldsconfig LEDS
4811da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
4821da177e4SLinus Torvalds	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
4831da177e4SLinus Torvalds		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
4841da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
4851da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
48673a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
48773a59c1cSSAN People		   ARCH_AT91RM9200
4881da177e4SLinus Torvalds	help
4891da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
4901da177e4SLinus Torvalds	  to provide useful information about your current system status.
4911da177e4SLinus Torvalds
4921da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
4931da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
4941da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
4951da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
4961da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
4971da177e4SLinus Torvalds	  system, but the driver will do nothing.
4981da177e4SLinus Torvalds
4991da177e4SLinus Torvaldsconfig LEDS_TIMER
5001da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
5011da177e4SLinus Torvalds			    MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5021da177e4SLinus Torvalds	depends on LEDS
5031da177e4SLinus Torvalds	default y if ARCH_EBSA110
5041da177e4SLinus Torvalds	help
5051da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
5061da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
5071da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
5081da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
5091da177e4SLinus Torvalds	  debugging unstable kernels.
5101da177e4SLinus Torvalds
5111da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5121da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5131da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5141da177e4SLinus Torvalds
5151da177e4SLinus Torvaldsconfig LEDS_CPU
5161da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
5171da177e4SLinus Torvalds			!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5181da177e4SLinus Torvalds	depends on LEDS
5191da177e4SLinus Torvalds	help
5201da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
5211da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
5221da177e4SLinus Torvalds	  is not currently executing.
5231da177e4SLinus Torvalds
5241da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5251da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5261da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5271da177e4SLinus Torvalds
5281da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
5291da177e4SLinus Torvalds	bool
5301da177e4SLinus Torvalds	default y if !ARCH_EBSA110
5311da177e4SLinus Torvalds	help
5321da177e4SLinus Torvalds	  ARM processors can not fetch/store information which is not
5331da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
5341da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
5351da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
5361da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
5371da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
5381da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
5391da177e4SLinus Torvalds
5401da177e4SLinus Torvaldsendmenu
5411da177e4SLinus Torvalds
5421da177e4SLinus Torvaldsmenu "Boot options"
5431da177e4SLinus Torvalds
5441da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
5451da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
5461da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
5471da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
5481da177e4SLinus Torvalds	default "0"
5491da177e4SLinus Torvalds	help
5501da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
5511da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
5521da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5531da177e4SLinus Torvalds	  value in their defconfig file.
5541da177e4SLinus Torvalds
5551da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5561da177e4SLinus Torvalds
5571da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
5581da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
5591da177e4SLinus Torvalds	default "0"
5601da177e4SLinus Torvalds	help
5611da177e4SLinus Torvalds	  The base address of 64KiB of read/write memory in the target
5621da177e4SLinus Torvalds	  for the ROM-able zImage, which must be available while the
5631da177e4SLinus Torvalds	  decompressor is running.  Platforms which normally make use of
5641da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
5651da177e4SLinus Torvalds	  value in their defconfig file.
5661da177e4SLinus Torvalds
5671da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
5681da177e4SLinus Torvalds
5691da177e4SLinus Torvaldsconfig ZBOOT_ROM
5701da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
5711da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
5721da177e4SLinus Torvalds	help
5731da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
5741da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
5751da177e4SLinus Torvalds
5761da177e4SLinus Torvaldsconfig CMDLINE
5771da177e4SLinus Torvalds	string "Default kernel command string"
5781da177e4SLinus Torvalds	default ""
5791da177e4SLinus Torvalds	help
5801da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
5811da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
5821da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
5831da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
5841da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
5851da177e4SLinus Torvalds
5861da177e4SLinus Torvaldsconfig XIP_KERNEL
5871da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
5881da177e4SLinus Torvalds	depends on !ZBOOT_ROM
5891da177e4SLinus Torvalds	help
5901da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
5911da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
5921da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
5931da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
5941da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
5951da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
5961da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
5971da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
5981da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
5991da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
6001da177e4SLinus Torvalds
6011da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
6021da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
6031da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
6041da177e4SLinus Torvalds
6051da177e4SLinus Torvalds	  If unsure, say N.
6061da177e4SLinus Torvalds
6071da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
6081da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
6091da177e4SLinus Torvalds	depends on XIP_KERNEL
6101da177e4SLinus Torvalds	default "0x00080000"
6111da177e4SLinus Torvalds	help
6121da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
6131da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
6141da177e4SLinus Torvalds	  own flash usage.
6151da177e4SLinus Torvalds
6161da177e4SLinus Torvaldsendmenu
6171da177e4SLinus Torvalds
618ec6bced6STony Lindgrenif (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
6191da177e4SLinus Torvalds
6201da177e4SLinus Torvaldsmenu "CPU Frequency scaling"
6211da177e4SLinus Torvalds
6221da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
6231da177e4SLinus Torvalds
6241da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
6251da177e4SLinus Torvalds	bool
62607c6d48fSVincent Sanders	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
6271da177e4SLinus Torvalds	default y
6281da177e4SLinus Torvalds
6291da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
6301da177e4SLinus Torvalds	bool
6311da177e4SLinus Torvalds	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
6321da177e4SLinus Torvalds	default y
6331da177e4SLinus Torvalds
6341da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
6351da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
6361da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
6371da177e4SLinus Torvalds	default y
6381da177e4SLinus Torvalds	help
6391da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
6401da177e4SLinus Torvalds
6411da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
6421da177e4SLinus Torvalds
6431da177e4SLinus Torvalds	  If in doubt, say Y.
6441da177e4SLinus Torvalds
6451da177e4SLinus Torvaldsendmenu
6461da177e4SLinus Torvalds
6471da177e4SLinus Torvaldsendif
6481da177e4SLinus Torvalds
6491da177e4SLinus Torvaldsmenu "Floating point emulation"
6501da177e4SLinus Torvalds
6511da177e4SLinus Torvaldscomment "At least one emulation must be selected"
6521da177e4SLinus Torvalds
6531da177e4SLinus Torvaldsconfig FPE_NWFPE
6541da177e4SLinus Torvalds	bool "NWFPE math emulation"
6558993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
6561da177e4SLinus Torvalds	---help---
6571da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
6581da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
6591da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
6601da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
6611da177e4SLinus Torvalds
6621da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
6631da177e4SLinus Torvalds	  early in the bootup.
6641da177e4SLinus Torvalds
6651da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
6661da177e4SLinus Torvalds	bool "Support extended precision"
667bedf142bSLennert Buytenhek	depends on FPE_NWFPE
6681da177e4SLinus Torvalds	help
6691da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
6701da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
6711da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
6721da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
6731da177e4SLinus Torvalds	  floating point emulator without any good reason.
6741da177e4SLinus Torvalds
6751da177e4SLinus Torvalds	  You almost surely want to say N here.
6761da177e4SLinus Torvalds
6771da177e4SLinus Torvaldsconfig FPE_FASTFPE
6781da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
6798993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
6801da177e4SLinus Torvalds	---help---
6811da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
6821da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
6831da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
6841da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
6851da177e4SLinus Torvalds
6861da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
6871da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
6881da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
6891da177e4SLinus Torvalds	  choose NWFPE.
6901da177e4SLinus Torvalds
6911da177e4SLinus Torvaldsconfig VFP
6921da177e4SLinus Torvalds	bool "VFP-format floating point maths"
6931da177e4SLinus Torvalds	depends on CPU_V6 || CPU_ARM926T
6941da177e4SLinus Torvalds	help
6951da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
6961da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
6971da177e4SLinus Torvalds
6981da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
6991da177e4SLinus Torvalds	  release notes and additional status information.
7001da177e4SLinus Torvalds
7011da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
7021da177e4SLinus Torvalds
7031da177e4SLinus Torvaldsendmenu
7041da177e4SLinus Torvalds
7051da177e4SLinus Torvaldsmenu "Userspace binary formats"
7061da177e4SLinus Torvalds
7071da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
7081da177e4SLinus Torvalds
7091da177e4SLinus Torvaldsconfig ARTHUR
7101da177e4SLinus Torvalds	tristate "RISC OS personality"
711704bdda0SNicolas Pitre	depends on !AEABI
7121da177e4SLinus Torvalds	help
7131da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
7141da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
7151da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
7161da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
7171da177e4SLinus Torvalds	  will be called arthur).
7181da177e4SLinus Torvalds
7191da177e4SLinus Torvaldsendmenu
7201da177e4SLinus Torvalds
7211da177e4SLinus Torvaldsmenu "Power management options"
7221da177e4SLinus Torvalds
723eceab4acSRussell Kingsource "kernel/power/Kconfig"
7241da177e4SLinus Torvalds
7251da177e4SLinus Torvaldsconfig APM
7261da177e4SLinus Torvalds	tristate "Advanced Power Management Emulation"
7271da177e4SLinus Torvalds	---help---
7281da177e4SLinus Torvalds	  APM is a BIOS specification for saving power using several different
7291da177e4SLinus Torvalds	  techniques. This is mostly useful for battery powered laptops with
7301da177e4SLinus Torvalds	  APM compliant BIOSes. If you say Y here, the system time will be
7311da177e4SLinus Torvalds	  reset after a RESUME operation, the /proc/apm device will provide
7321da177e4SLinus Torvalds	  battery status information, and user-space programs will receive
7331da177e4SLinus Torvalds	  notification of APM "events" (e.g. battery status change).
7341da177e4SLinus Torvalds
7351da177e4SLinus Torvalds	  In order to use APM, you will need supporting software. For location
7361da177e4SLinus Torvalds	  and more information, read <file:Documentation/pm.txt> and the
7371da177e4SLinus Torvalds	  Battery Powered Linux mini-HOWTO, available from
7381da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>.
7391da177e4SLinus Torvalds
7401da177e4SLinus Torvalds	  This driver does not spin down disk drives (see the hdparm(8)
7411da177e4SLinus Torvalds	  manpage ("man 8 hdparm") for that), and it doesn't turn off
7421da177e4SLinus Torvalds	  VESA-compliant "green" monitors.
7431da177e4SLinus Torvalds
7441da177e4SLinus Torvalds	  Generally, if you don't have a battery in your machine, there isn't
7451da177e4SLinus Torvalds	  much point in using this driver and you should say N. If you get
7461da177e4SLinus Torvalds	  random kernel OOPSes or reboots that don't seem to be related to
7471da177e4SLinus Torvalds	  anything, try disabling/enabling this option (or disabling/enabling
7481da177e4SLinus Torvalds	  APM in your BIOS).
7491da177e4SLinus Torvalds
7501da177e4SLinus Torvaldsendmenu
7511da177e4SLinus Torvalds
752d5950b43SSam Ravnborgsource "net/Kconfig"
753d5950b43SSam Ravnborg
7541da177e4SLinus Torvaldsmenu "Device Drivers"
7551da177e4SLinus Torvalds
7561da177e4SLinus Torvaldssource "drivers/base/Kconfig"
7571da177e4SLinus Torvalds
758c35bf4a5SPavel Macheksource "drivers/connector/Kconfig"
759c35bf4a5SPavel Machek
7601da177e4SLinus Torvaldsif ALIGNMENT_TRAP
7611da177e4SLinus Torvaldssource "drivers/mtd/Kconfig"
7621da177e4SLinus Torvaldsendif
7631da177e4SLinus Torvalds
7641da177e4SLinus Torvaldssource "drivers/parport/Kconfig"
7651da177e4SLinus Torvalds
7661da177e4SLinus Torvaldssource "drivers/pnp/Kconfig"
7671da177e4SLinus Torvalds
7681da177e4SLinus Torvaldssource "drivers/block/Kconfig"
7691da177e4SLinus Torvalds
7701da177e4SLinus Torvaldssource "drivers/acorn/block/Kconfig"
7711da177e4SLinus Torvalds
772bb011b8eSDavid Brownellif PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
773bb011b8eSDavid Brownell	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
774d56c524aSRussell King	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
7751da177e4SLinus Torvaldssource "drivers/ide/Kconfig"
7761da177e4SLinus Torvaldsendif
7771da177e4SLinus Torvalds
7781da177e4SLinus Torvaldssource "drivers/scsi/Kconfig"
7791da177e4SLinus Torvalds
7801da177e4SLinus Torvaldssource "drivers/md/Kconfig"
7811da177e4SLinus Torvalds
7821da177e4SLinus Torvaldssource "drivers/message/fusion/Kconfig"
7831da177e4SLinus Torvalds
7841da177e4SLinus Torvaldssource "drivers/ieee1394/Kconfig"
7851da177e4SLinus Torvalds
7861da177e4SLinus Torvaldssource "drivers/message/i2o/Kconfig"
7871da177e4SLinus Torvalds
788d5950b43SSam Ravnborgsource "drivers/net/Kconfig"
7891da177e4SLinus Torvalds
7901da177e4SLinus Torvaldssource "drivers/isdn/Kconfig"
7911da177e4SLinus Torvalds
7921da177e4SLinus Torvalds# input before char - char/joystick depends on it. As does USB.
7931da177e4SLinus Torvalds
7941da177e4SLinus Torvaldssource "drivers/input/Kconfig"
7951da177e4SLinus Torvalds
7961da177e4SLinus Torvaldssource "drivers/char/Kconfig"
7971da177e4SLinus Torvalds
7981da177e4SLinus Torvaldssource "drivers/i2c/Kconfig"
7991da177e4SLinus Torvalds
8008ae12a0dSDavid Brownellsource "drivers/spi/Kconfig"
8018ae12a0dSDavid Brownell
802*04916c0eSAlessandro Zummosource "drivers/w1/Kconfig"
803*04916c0eSAlessandro Zummo
804ad2f931dSJean Delvaresource "drivers/hwmon/Kconfig"
805ad2f931dSJean Delvare
8061da177e4SLinus Torvalds#source "drivers/l3/Kconfig"
8071da177e4SLinus Torvalds
8081da177e4SLinus Torvaldssource "drivers/misc/Kconfig"
8091da177e4SLinus Torvalds
810a4e137abSRussell Kingsource "drivers/mfd/Kconfig"
811a4e137abSRussell King
8121da177e4SLinus Torvaldssource "drivers/media/Kconfig"
8131da177e4SLinus Torvalds
8141da177e4SLinus Torvaldssource "drivers/video/Kconfig"
8151da177e4SLinus Torvalds
8161da177e4SLinus Torvaldssource "sound/Kconfig"
8171da177e4SLinus Torvalds
8181da177e4SLinus Torvaldssource "drivers/usb/Kconfig"
8191da177e4SLinus Torvalds
8201da177e4SLinus Torvaldssource "drivers/mmc/Kconfig"
8211da177e4SLinus Torvalds
8221da177e4SLinus Torvaldsendmenu
8231da177e4SLinus Torvalds
8241da177e4SLinus Torvaldssource "fs/Kconfig"
8251da177e4SLinus Torvalds
8261da177e4SLinus Torvaldssource "arch/arm/oprofile/Kconfig"
8271da177e4SLinus Torvalds
8281da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
8291da177e4SLinus Torvalds
8301da177e4SLinus Torvaldssource "security/Kconfig"
8311da177e4SLinus Torvalds
8321da177e4SLinus Torvaldssource "crypto/Kconfig"
8331da177e4SLinus Torvalds
8341da177e4SLinus Torvaldssource "lib/Kconfig"
835