xref: /linux/arch/arm/Kconfig (revision 4a2581a080098ca3a0c4e416d7a282e96c75ebf8)
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
1112b824fbSAlessandro Zummo	select RTC_LIB
121da177e4SLinus Torvalds	help
131da177e4SLinus Torvalds	  The ARM series is a line of low-power-consumption RISC chip designs
14f6c8965aSMartin Michlmayr	  licensed by ARM Ltd and targeted at embedded applications and
151da177e4SLinus Torvalds	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
161da177e4SLinus Torvalds	  manufactured, but legacy ARM-based PC hardware remains popular in
171da177e4SLinus Torvalds	  Europe.  There is an ARM Linux project with a web page at
181da177e4SLinus Torvalds	  <http://www.arm.linux.org.uk/>.
191da177e4SLinus Torvalds
201da177e4SLinus Torvaldsconfig MMU
211da177e4SLinus Torvalds	bool
221da177e4SLinus Torvalds	default y
231da177e4SLinus Torvalds
241da177e4SLinus Torvaldsconfig EISA
251da177e4SLinus Torvalds	bool
261da177e4SLinus Torvalds	---help---
271da177e4SLinus Torvalds	  The Extended Industry Standard Architecture (EISA) bus was
281da177e4SLinus Torvalds	  developed as an open alternative to the IBM MicroChannel bus.
291da177e4SLinus Torvalds
301da177e4SLinus Torvalds	  The EISA bus provided some of the features of the IBM MicroChannel
311da177e4SLinus Torvalds	  bus while maintaining backward compatibility with cards made for
321da177e4SLinus Torvalds	  the older ISA bus.  The EISA bus saw limited use between 1988 and
331da177e4SLinus Torvalds	  1995 when it was made obsolete by the PCI bus.
341da177e4SLinus Torvalds
351da177e4SLinus Torvalds	  Say Y here if you are building a kernel for an EISA-based machine.
361da177e4SLinus Torvalds
371da177e4SLinus Torvalds	  Otherwise, say N.
381da177e4SLinus Torvalds
391da177e4SLinus Torvaldsconfig SBUS
401da177e4SLinus Torvalds	bool
411da177e4SLinus Torvalds
421da177e4SLinus Torvaldsconfig MCA
431da177e4SLinus Torvalds	bool
441da177e4SLinus Torvalds	help
451da177e4SLinus Torvalds	  MicroChannel Architecture is found in some IBM PS/2 machines and
461da177e4SLinus Torvalds	  laptops.  It is a bus system similar to PCI or ISA. See
471da177e4SLinus Torvalds	  <file:Documentation/mca.txt> (and especially the web page given
481da177e4SLinus Torvalds	  there) before attempting to build an MCA bus kernel.
491da177e4SLinus Torvalds
50*4a2581a0SThomas Gleixnerconfig GENERIC_HARDIRQS
51*4a2581a0SThomas Gleixner	bool
52*4a2581a0SThomas Gleixner	default y
53*4a2581a0SThomas Gleixner
54*4a2581a0SThomas Gleixnerconfig HARDIRQS_SW_RESEND
55*4a2581a0SThomas Gleixner	bool
56*4a2581a0SThomas Gleixner	default y
57*4a2581a0SThomas Gleixner
58*4a2581a0SThomas Gleixnerconfig GENERIC_IRQ_PROBE
59*4a2581a0SThomas Gleixner	bool
60*4a2581a0SThomas Gleixner	default y
61*4a2581a0SThomas Gleixner
621da177e4SLinus Torvaldsconfig RWSEM_GENERIC_SPINLOCK
631da177e4SLinus Torvalds	bool
641da177e4SLinus Torvalds	default y
651da177e4SLinus Torvalds
661da177e4SLinus Torvaldsconfig RWSEM_XCHGADD_ALGORITHM
671da177e4SLinus Torvalds	bool
681da177e4SLinus Torvalds
69b89c3b16SAkinobu Mitaconfig GENERIC_HWEIGHT
70b89c3b16SAkinobu Mita	bool
71b89c3b16SAkinobu Mita	default y
72b89c3b16SAkinobu Mita
731da177e4SLinus Torvaldsconfig GENERIC_CALIBRATE_DELAY
741da177e4SLinus Torvalds	bool
751da177e4SLinus Torvalds	default y
761da177e4SLinus Torvalds
771da177e4SLinus Torvaldsconfig GENERIC_BUST_SPINLOCK
781da177e4SLinus Torvalds	bool
791da177e4SLinus Torvalds
80a08b6b79Sviro@ZenIV.linux.org.ukconfig ARCH_MAY_HAVE_PC_FDC
81a08b6b79Sviro@ZenIV.linux.org.uk	bool
82a08b6b79Sviro@ZenIV.linux.org.uk
831da177e4SLinus Torvaldsconfig GENERIC_ISA_DMA
841da177e4SLinus Torvalds	bool
851da177e4SLinus Torvalds
861da177e4SLinus Torvaldsconfig FIQ
871da177e4SLinus Torvalds	bool
881da177e4SLinus Torvalds
89034d2f5aSAl Viroconfig ARCH_MTD_XIP
90034d2f5aSAl Viro	bool
91034d2f5aSAl Viro
92c760fc19SHyok S. Choiconfig VECTORS_BASE
93c760fc19SHyok S. Choi	hex
94c760fc19SHyok S. Choi	default 0xffff0000 if MMU
95c760fc19SHyok S. Choi	default DRAM_BASE if REMAP_VECTORS_TO_RAM
96c760fc19SHyok S. Choi	default 0x00000000
97c760fc19SHyok S. Choi	help
98c760fc19SHyok S. Choi	  The base address of exception vectors.
99c760fc19SHyok S. Choi
1001da177e4SLinus Torvaldssource "init/Kconfig"
1011da177e4SLinus Torvalds
1021da177e4SLinus Torvaldsmenu "System Type"
1031da177e4SLinus Torvalds
1041da177e4SLinus Torvaldschoice
1051da177e4SLinus Torvalds	prompt "ARM system type"
1066a0e2430SCatalin Marinas	default ARCH_VERSATILE
1071da177e4SLinus Torvalds
1084af6fee1SDeepak Saxenaconfig ARCH_AAEC2000
1094af6fee1SDeepak Saxena	bool "Agilent AAEC-2000 based"
1104af6fee1SDeepak Saxena	select ARM_AMBA
1114af6fee1SDeepak Saxena	help
1124af6fee1SDeepak Saxena	  This enables support for systems based on the Agilent AAEC-2000
1134af6fee1SDeepak Saxena
1144af6fee1SDeepak Saxenaconfig ARCH_INTEGRATOR
1154af6fee1SDeepak Saxena	bool "ARM Ltd. Integrator family"
1164af6fee1SDeepak Saxena	select ARM_AMBA
1174af6fee1SDeepak Saxena	select ICST525
1184af6fee1SDeepak Saxena	help
1194af6fee1SDeepak Saxena	  Support for ARM's Integrator platform.
1204af6fee1SDeepak Saxena
1214af6fee1SDeepak Saxenaconfig ARCH_REALVIEW
1224af6fee1SDeepak Saxena	bool "ARM Ltd. RealView family"
1234af6fee1SDeepak Saxena	select ARM_AMBA
1244af6fee1SDeepak Saxena	select ICST307
1254af6fee1SDeepak Saxena	help
1264af6fee1SDeepak Saxena	  This enables support for ARM Ltd RealView boards.
1274af6fee1SDeepak Saxena
1284af6fee1SDeepak Saxenaconfig ARCH_VERSATILE
1294af6fee1SDeepak Saxena	bool "ARM Ltd. Versatile family"
1304af6fee1SDeepak Saxena	select ARM_AMBA
1314af6fee1SDeepak Saxena	select ARM_VIC
1324af6fee1SDeepak Saxena	select ICST307
1334af6fee1SDeepak Saxena	help
1344af6fee1SDeepak Saxena	  This enables support for ARM Ltd Versatile board.
1354af6fee1SDeepak Saxena
1364af6fee1SDeepak Saxenaconfig ARCH_AT91RM9200
1374af6fee1SDeepak Saxena	bool "Atmel AT91RM9200"
1384af6fee1SDeepak Saxena	help
1394af6fee1SDeepak Saxena	  Say Y here if you intend to run this kernel on an Atmel
1404af6fee1SDeepak Saxena	  AT91RM9200-based board.
1414af6fee1SDeepak Saxena
1421da177e4SLinus Torvaldsconfig ARCH_CLPS7500
1434af6fee1SDeepak Saxena	bool "Cirrus CL-PS7500FE"
1441da177e4SLinus Torvalds	select TIMER_ACORN
145f7e68bbfSRussell King	select ISA
146f999b8bdSMartin Michlmayr	help
147f999b8bdSMartin Michlmayr	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
1481da177e4SLinus Torvalds
1491da177e4SLinus Torvaldsconfig ARCH_CLPS711X
1504af6fee1SDeepak Saxena	bool "Cirrus Logic CLPS711x/EP721x-based"
151f999b8bdSMartin Michlmayr	help
152f999b8bdSMartin Michlmayr	  Support for Cirrus Logic 711x/721x based boards.
1531da177e4SLinus Torvalds
1541da177e4SLinus Torvaldsconfig ARCH_CO285
1551da177e4SLinus Torvalds	bool "Co-EBSA285"
1561da177e4SLinus Torvalds	select FOOTBRIDGE
1571da177e4SLinus Torvalds	select FOOTBRIDGE_ADDIN
158f999b8bdSMartin Michlmayr	help
159f999b8bdSMartin Michlmayr	  Support for Intel's EBSA285 companion chip.
1601da177e4SLinus Torvalds
1611da177e4SLinus Torvaldsconfig ARCH_EBSA110
1621da177e4SLinus Torvalds	bool "EBSA-110"
163f7e68bbfSRussell King	select ISA
1641da177e4SLinus Torvalds	help
1651da177e4SLinus Torvalds	  This is an evaluation board for the StrongARM processor available
166f6c8965aSMartin Michlmayr	  from Digital. It has limited hardware on-board, including an
1671da177e4SLinus Torvalds	  Ethernet interface, two PCMCIA sockets, two serial ports and a
1681da177e4SLinus Torvalds	  parallel port.
1691da177e4SLinus Torvalds
170e7736d47SLennert Buytenhekconfig ARCH_EP93XX
171e7736d47SLennert Buytenhek	bool "EP93xx-based"
172e7736d47SLennert Buytenhek	select ARM_AMBA
173e7736d47SLennert Buytenhek	select ARM_VIC
174e7736d47SLennert Buytenhek	help
175e7736d47SLennert Buytenhek	  This enables support for the Cirrus EP93xx series of CPUs.
176e7736d47SLennert Buytenhek
1771da177e4SLinus Torvaldsconfig ARCH_FOOTBRIDGE
1781da177e4SLinus Torvalds	bool "FootBridge"
1791da177e4SLinus Torvalds	select FOOTBRIDGE
180f999b8bdSMartin Michlmayr	help
181f999b8bdSMartin Michlmayr	  Support for systems based on the DC21285 companion chip
182f999b8bdSMartin Michlmayr	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1831da177e4SLinus Torvalds
1844af6fee1SDeepak Saxenaconfig ARCH_NETX
1854af6fee1SDeepak Saxena	bool "Hilscher NetX based"
1864af6fee1SDeepak Saxena	select ARM_VIC
187f999b8bdSMartin Michlmayr	help
1884af6fee1SDeepak Saxena	  This enables support for systems based on the Hilscher NetX Soc
1894af6fee1SDeepak Saxena
1904af6fee1SDeepak Saxenaconfig ARCH_H720X
1914af6fee1SDeepak Saxena	bool "Hynix HMS720x-based"
1924af6fee1SDeepak Saxena	select ISA_DMA_API
1934af6fee1SDeepak Saxena	help
1944af6fee1SDeepak Saxena	  This enables support for systems based on the Hynix HMS720x
1954af6fee1SDeepak Saxena
1964af6fee1SDeepak Saxenaconfig ARCH_IMX
1974af6fee1SDeepak Saxena	bool "IMX"
1984af6fee1SDeepak Saxena	help
1994af6fee1SDeepak Saxena	  Support for Motorola's i.MX family of processors (MX1, MXL).
2001da177e4SLinus Torvalds
2011da177e4SLinus Torvaldsconfig ARCH_IOP3XX
2021da177e4SLinus Torvalds	bool "IOP3xx-based"
203a4f7e763SRussell King	depends on MMU
204f7e68bbfSRussell King	select PCI
205f999b8bdSMartin Michlmayr	help
206f999b8bdSMartin Michlmayr	  Support for Intel's IOP3XX (XScale) family of processors.
2071da177e4SLinus Torvalds
2081da177e4SLinus Torvaldsconfig ARCH_IXP4XX
2091da177e4SLinus Torvalds	bool "IXP4xx-based"
210a4f7e763SRussell King	depends on MMU
211f999b8bdSMartin Michlmayr	help
212f999b8bdSMartin Michlmayr	  Support for Intel's IXP4XX (XScale) family of processors.
2131da177e4SLinus Torvalds
2141da177e4SLinus Torvaldsconfig ARCH_IXP2000
2151da177e4SLinus Torvalds	bool "IXP2400/2800-based"
216a4f7e763SRussell King	depends on MMU
217f7e68bbfSRussell King	select PCI
218f999b8bdSMartin Michlmayr	help
219f999b8bdSMartin Michlmayr	  Support for Intel's IXP2400/2800 (XScale) family of processors.
2201da177e4SLinus Torvalds
221c4713074SLennert Buytenhekconfig ARCH_IXP23XX
222c4713074SLennert Buytenhek 	bool "IXP23XX-based"
223a4f7e763SRussell King	depends on MMU
224c4713074SLennert Buytenhek 	select PCI
225c4713074SLennert Buytenhek	help
226c4713074SLennert Buytenhek	  Support for Intel's IXP23xx (XScale) family of processors.
227c4713074SLennert Buytenhek
2281da177e4SLinus Torvaldsconfig ARCH_L7200
2291da177e4SLinus Torvalds	bool "LinkUp-L7200"
2301da177e4SLinus Torvalds	select FIQ
2311da177e4SLinus Torvalds	help
2321da177e4SLinus Torvalds	  Say Y here if you intend to run this kernel on a LinkUp Systems
2331da177e4SLinus Torvalds	  L7200 Software Development Board which uses an ARM720T processor.
2341da177e4SLinus Torvalds	  Information on this board can be obtained at:
2351da177e4SLinus Torvalds
2361da177e4SLinus Torvalds	  <http://www.linkupsys.com/>
2371da177e4SLinus Torvalds
2381da177e4SLinus Torvalds	  If you have any questions or comments about the Linux kernel port
2391da177e4SLinus Torvalds	  to this board, send e-mail to <sjhill@cotw.com>.
2401da177e4SLinus Torvalds
2414af6fee1SDeepak Saxenaconfig ARCH_PNX4008
2424af6fee1SDeepak Saxena	bool "Philips Nexperia PNX4008 Mobile"
2434af6fee1SDeepak Saxena	help
2444af6fee1SDeepak Saxena	  This enables support for Philips PNX4008 mobile platform.
2454af6fee1SDeepak Saxena
2461da177e4SLinus Torvaldsconfig ARCH_PXA
2471da177e4SLinus Torvalds	bool "PXA2xx-based"
248a4f7e763SRussell King	depends on MMU
249034d2f5aSAl Viro	select ARCH_MTD_XIP
250f999b8bdSMartin Michlmayr	help
251f999b8bdSMartin Michlmayr	  Support for Intel's PXA2XX processor line.
2521da177e4SLinus Torvalds
2531da177e4SLinus Torvaldsconfig ARCH_RPC
2541da177e4SLinus Torvalds	bool "RiscPC"
2551da177e4SLinus Torvalds	select ARCH_ACORN
2561da177e4SLinus Torvalds	select FIQ
2571da177e4SLinus Torvalds	select TIMER_ACORN
258a08b6b79Sviro@ZenIV.linux.org.uk	select ARCH_MAY_HAVE_PC_FDC
259065909b9SRussell King	select ISA_DMA_API
2601da177e4SLinus Torvalds	help
2611da177e4SLinus Torvalds	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
2621da177e4SLinus Torvalds	  CD-ROM interface, serial and parallel port, and the floppy drive.
2631da177e4SLinus Torvalds
2641da177e4SLinus Torvaldsconfig ARCH_SA1100
2651da177e4SLinus Torvalds	bool "SA1100-based"
266f7e68bbfSRussell King	select ISA
2673cd9e19eSRussell King	select ARCH_DISCONTIGMEM_ENABLE
268034d2f5aSAl Viro	select ARCH_MTD_XIP
269f999b8bdSMartin Michlmayr	help
270f999b8bdSMartin Michlmayr	  Support for StrongARM 11x0 based boards.
2711da177e4SLinus Torvalds
2721da177e4SLinus Torvaldsconfig ARCH_S3C2410
273cd701aa2SBen Dooks	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
2741da177e4SLinus Torvalds	help
2751da177e4SLinus Torvalds	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
2761da177e4SLinus Torvalds	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
277f6c8965aSMartin Michlmayr	  the Samsung SMDK2410 development board (and derivatives).
2781da177e4SLinus Torvalds
2791da177e4SLinus Torvaldsconfig ARCH_SHARK
2801da177e4SLinus Torvalds	bool "Shark"
281f7e68bbfSRussell King	select ISA
282f7e68bbfSRussell King	select ISA_DMA
283f7e68bbfSRussell King	select PCI
284f999b8bdSMartin Michlmayr	help
285f999b8bdSMartin Michlmayr	  Support for the StrongARM based Digital DNARD machine, also known
286f999b8bdSMartin Michlmayr	  as "Shark" (<http://www.shark-linux.de/shark.html>).
2871da177e4SLinus Torvalds
2881da177e4SLinus Torvaldsconfig ARCH_LH7A40X
2891da177e4SLinus Torvalds	bool "Sharp LH7A40X"
2901da177e4SLinus Torvalds	help
2911da177e4SLinus Torvalds	  Say Y here for systems based on one of the Sharp LH7A40X
2921da177e4SLinus Torvalds	  System on a Chip processors.  These CPUs include an ARM922T
2931da177e4SLinus Torvalds	  core with a wide array of integrated devices for
2941da177e4SLinus Torvalds	  hand-held and low-power applications.
2951da177e4SLinus Torvalds
2961da177e4SLinus Torvaldsconfig ARCH_OMAP
2971da177e4SLinus Torvalds	bool "TI OMAP"
298f999b8bdSMartin Michlmayr	help
299f999b8bdSMartin Michlmayr	  Support for TI's OMAP platform (OMAP1 and OMAP2).
3001da177e4SLinus Torvalds
3011da177e4SLinus Torvaldsendchoice
3021da177e4SLinus Torvalds
3031da177e4SLinus Torvaldssource "arch/arm/mach-clps711x/Kconfig"
3041da177e4SLinus Torvalds
305e7736d47SLennert Buytenheksource "arch/arm/mach-ep93xx/Kconfig"
306e7736d47SLennert Buytenhek
3071da177e4SLinus Torvaldssource "arch/arm/mach-footbridge/Kconfig"
3081da177e4SLinus Torvalds
3091da177e4SLinus Torvaldssource "arch/arm/mach-integrator/Kconfig"
3101da177e4SLinus Torvalds
3111da177e4SLinus Torvaldssource "arch/arm/mach-iop3xx/Kconfig"
3121da177e4SLinus Torvalds
3131da177e4SLinus Torvaldssource "arch/arm/mach-ixp4xx/Kconfig"
3141da177e4SLinus Torvalds
3151da177e4SLinus Torvaldssource "arch/arm/mach-ixp2000/Kconfig"
3161da177e4SLinus Torvalds
317c4713074SLennert Buytenheksource "arch/arm/mach-ixp23xx/Kconfig"
318c4713074SLennert Buytenhek
3191da177e4SLinus Torvaldssource "arch/arm/mach-pxa/Kconfig"
3201da177e4SLinus Torvalds
3211da177e4SLinus Torvaldssource "arch/arm/mach-sa1100/Kconfig"
3221da177e4SLinus Torvalds
323d48af15eSTony Lindgrensource "arch/arm/plat-omap/Kconfig"
324d48af15eSTony Lindgren
325d48af15eSTony Lindgrensource "arch/arm/mach-omap1/Kconfig"
3261da177e4SLinus Torvalds
3271dbae815STony Lindgrensource "arch/arm/mach-omap2/Kconfig"
3281dbae815STony Lindgren
3291da177e4SLinus Torvaldssource "arch/arm/mach-s3c2410/Kconfig"
3301da177e4SLinus Torvalds
3311da177e4SLinus Torvaldssource "arch/arm/mach-lh7a40x/Kconfig"
3321da177e4SLinus Torvalds
3331da177e4SLinus Torvaldssource "arch/arm/mach-imx/Kconfig"
3341da177e4SLinus Torvalds
3351da177e4SLinus Torvaldssource "arch/arm/mach-h720x/Kconfig"
3361da177e4SLinus Torvalds
3371da177e4SLinus Torvaldssource "arch/arm/mach-versatile/Kconfig"
3381da177e4SLinus Torvalds
339038c5b60SBellido Nicolassource "arch/arm/mach-aaec2000/Kconfig"
340038c5b60SBellido Nicolas
3418ad68bbfSCatalin Marinassource "arch/arm/mach-realview/Kconfig"
3428ad68bbfSCatalin Marinas
34373a59c1cSSAN Peoplesource "arch/arm/mach-at91rm9200/Kconfig"
34473a59c1cSSAN People
345bb6d8c88SSascha Hauersource "arch/arm/mach-netx/Kconfig"
346bb6d8c88SSascha Hauer
3471da177e4SLinus Torvalds# Definitions to make life easier
3481da177e4SLinus Torvaldsconfig ARCH_ACORN
3491da177e4SLinus Torvalds	bool
3501da177e4SLinus Torvalds
3511da177e4SLinus Torvaldssource arch/arm/mm/Kconfig
3521da177e4SLinus Torvalds
3531da177e4SLinus Torvalds#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
3541da177e4SLinus Torvaldsconfig XSCALE_PMU
3551da177e4SLinus Torvalds	bool
3561da177e4SLinus Torvalds	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
3571da177e4SLinus Torvalds	default y
3581da177e4SLinus Torvalds
3593b93e7b0SHyok S. Choiif !MMU
3603b93e7b0SHyok S. Choisource "arch/arm/Kconfig-nommu"
3613b93e7b0SHyok S. Choiendif
3623b93e7b0SHyok S. Choi
3631da177e4SLinus Torvaldsendmenu
3641da177e4SLinus Torvalds
3651da177e4SLinus Torvaldssource "arch/arm/common/Kconfig"
3661da177e4SLinus Torvalds
3671da177e4SLinus Torvaldsconfig FORCE_MAX_ZONEORDER
3681da177e4SLinus Torvalds	int
3691da177e4SLinus Torvalds	depends on SA1111
3701da177e4SLinus Torvalds	default "9"
3711da177e4SLinus Torvalds
3721da177e4SLinus Torvaldsmenu "Bus support"
3731da177e4SLinus Torvalds
3741da177e4SLinus Torvaldsconfig ARM_AMBA
3751da177e4SLinus Torvalds	bool
3761da177e4SLinus Torvalds
3771da177e4SLinus Torvaldsconfig ISA
3781da177e4SLinus Torvalds	bool
3791da177e4SLinus Torvalds	help
3801da177e4SLinus Torvalds	  Find out whether you have ISA slots on your motherboard.  ISA is the
3811da177e4SLinus Torvalds	  name of a bus system, i.e. the way the CPU talks to the other stuff
3821da177e4SLinus Torvalds	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
3831da177e4SLinus Torvalds	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
3841da177e4SLinus Torvalds	  newer boards don't support it.  If you have ISA, say Y, otherwise N.
3851da177e4SLinus Torvalds
386065909b9SRussell King# Select ISA DMA controller support
3871da177e4SLinus Torvaldsconfig ISA_DMA
3881da177e4SLinus Torvalds	bool
389065909b9SRussell King	select ISA_DMA_API
3901da177e4SLinus Torvalds
391065909b9SRussell King# Select ISA DMA interface
3925cae841bSAl Viroconfig ISA_DMA_API
3935cae841bSAl Viro	bool
3945cae841bSAl Viro
3951da177e4SLinus Torvaldsconfig PCI
39668939121SMilan Svoboda	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
3971da177e4SLinus Torvalds	help
3981da177e4SLinus Torvalds	  Find out whether you have a PCI motherboard. PCI is the name of a
3991da177e4SLinus Torvalds	  bus system, i.e. the way the CPU talks to the other stuff inside
4001da177e4SLinus Torvalds	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
4011da177e4SLinus Torvalds	  VESA. If you have PCI, say Y, otherwise N.
4021da177e4SLinus Torvalds
4031da177e4SLinus Torvalds	  The PCI-HOWTO, available from
4041da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>, contains valuable
4051da177e4SLinus Torvalds	  information about which PCI hardware does work under Linux and which
4061da177e4SLinus Torvalds	  doesn't.
4071da177e4SLinus Torvalds
4081da177e4SLinus Torvalds# Select the host bridge type
4091da177e4SLinus Torvaldsconfig PCI_HOST_VIA82C505
4101da177e4SLinus Torvalds	bool
4111da177e4SLinus Torvalds	depends on PCI && ARCH_SHARK
4121da177e4SLinus Torvalds	default y
4131da177e4SLinus Torvalds
4141da177e4SLinus Torvaldssource "drivers/pci/Kconfig"
4151da177e4SLinus Torvalds
4161da177e4SLinus Torvaldssource "drivers/pcmcia/Kconfig"
4171da177e4SLinus Torvalds
4181da177e4SLinus Torvaldsendmenu
4191da177e4SLinus Torvalds
4201da177e4SLinus Torvaldsmenu "Kernel Features"
4211da177e4SLinus Torvalds
4221da177e4SLinus Torvaldsconfig SMP
4231da177e4SLinus Torvalds	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
424f6db449cSRussell King	depends on EXPERIMENTAL && REALVIEW_MPCORE
4251da177e4SLinus Torvalds	help
4261da177e4SLinus Torvalds	  This enables support for systems with more than one CPU. If you have
4271da177e4SLinus Torvalds	  a system with only one CPU, like most personal computers, say N. If
4281da177e4SLinus Torvalds	  you have a system with more than one CPU, say Y.
4291da177e4SLinus Torvalds
4301da177e4SLinus Torvalds	  If you say N here, the kernel will run on single and multiprocessor
4311da177e4SLinus Torvalds	  machines, but will use only one CPU of a multiprocessor machine. If
4321da177e4SLinus Torvalds	  you say Y here, the kernel will run on many, but not all, single
4331da177e4SLinus Torvalds	  processor machines. On a single processor machine, the kernel will
4341da177e4SLinus Torvalds	  run faster if you say N here.
4351da177e4SLinus Torvalds
43612c62c2eSArthur Othieno	  See also the <file:Documentation/smp.txt>,
43712c62c2eSArthur Othieno	  <file:Documentation/i386/IO-APIC.txt>,
4381da177e4SLinus Torvalds	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
4391da177e4SLinus Torvalds	  <http://www.linuxdoc.org/docs.html#howto>.
4401da177e4SLinus Torvalds
4411da177e4SLinus Torvalds	  If you don't know what to do here, say N.
4421da177e4SLinus Torvalds
4431da177e4SLinus Torvaldsconfig NR_CPUS
4441da177e4SLinus Torvalds	int "Maximum number of CPUs (2-32)"
4451da177e4SLinus Torvalds	range 2 32
4461da177e4SLinus Torvalds	depends on SMP
4471da177e4SLinus Torvalds	default "4"
4481da177e4SLinus Torvalds
449a054a811SRussell Kingconfig HOTPLUG_CPU
450a054a811SRussell King	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
451a054a811SRussell King	depends on SMP && HOTPLUG && EXPERIMENTAL
452a054a811SRussell King	help
453a054a811SRussell King	  Say Y here to experiment with turning CPUs off and on.  CPUs
454a054a811SRussell King	  can be controlled through /sys/devices/system/cpu.
455a054a811SRussell King
45637ee16aeSRussell Kingconfig LOCAL_TIMERS
45737ee16aeSRussell King	bool "Use local timer interrupts"
4582a98beb6SRussell King	depends on SMP && REALVIEW_MPCORE
45937ee16aeSRussell King	default y
46037ee16aeSRussell King	help
46137ee16aeSRussell King	  Enable support for local timers on SMP platforms, rather then the
46237ee16aeSRussell King	  legacy IPI broadcast method.  Local timers allows the system
46337ee16aeSRussell King	  accounting to be spread across the timer interval, preventing a
46437ee16aeSRussell King	  "thundering herd" at every timer tick.
46537ee16aeSRussell King
4661da177e4SLinus Torvaldsconfig PREEMPT
4671da177e4SLinus Torvalds	bool "Preemptible Kernel (EXPERIMENTAL)"
4681da177e4SLinus Torvalds	depends on EXPERIMENTAL
4691da177e4SLinus Torvalds	help
4701da177e4SLinus Torvalds	  This option reduces the latency of the kernel when reacting to
4711da177e4SLinus Torvalds	  real-time or interactive events by allowing a low priority process to
4721da177e4SLinus Torvalds	  be preempted even if it is in kernel mode executing a system call.
4731da177e4SLinus Torvalds	  This allows applications to run more reliably even when the system is
4741da177e4SLinus Torvalds	  under load.
4751da177e4SLinus Torvalds
4761da177e4SLinus Torvalds	  Say Y here if you are building a kernel for a desktop, embedded
4771da177e4SLinus Torvalds	  or real-time system.  Say N if you are unsure.
4781da177e4SLinus Torvalds
4798749af68SRussell Kingconfig NO_IDLE_HZ
4808749af68SRussell King	bool "Dynamic tick timer"
4818749af68SRussell King	help
4828749af68SRussell King	  Select this option if you want to disable continuous timer ticks
4838749af68SRussell King	  and have them programmed to occur as required. This option saves
4848749af68SRussell King	  power as the system can remain in idle state for longer.
4858749af68SRussell King
4868749af68SRussell King	  By default dynamic tick is disabled during the boot, and can be
4878749af68SRussell King	  manually enabled with:
4888749af68SRussell King
4898749af68SRussell King	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick
4908749af68SRussell King
4918749af68SRussell King	  Alternatively, if you want dynamic tick automatically enabled
4928749af68SRussell King	  during boot, pass "dyntick=enable" via the kernel command string.
4938749af68SRussell King
494f2be64b3STony Lindgren	  Please note that dynamic tick may affect the accuracy of
495f2be64b3STony Lindgren	  timekeeping on some platforms depending on the implementation.
496569d2c34SNicolas Pitre	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
497569d2c34SNicolas Pitre	  to have accurate timekeeping with dynamic tick.
498f2be64b3STony Lindgren
499f8065813SRussell Kingconfig HZ
500f8065813SRussell King	int
501f8065813SRussell King	default 128 if ARCH_L7200
502f8065813SRussell King	default 200 if ARCH_EBSA110 || ARCH_S3C2410
503bfe65704SRussell King	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
504f8065813SRussell King	default 100
505f8065813SRussell King
506704bdda0SNicolas Pitreconfig AEABI
507704bdda0SNicolas Pitre	bool "Use the ARM EABI to compile the kernel"
508704bdda0SNicolas Pitre	help
509704bdda0SNicolas Pitre	  This option allows for the kernel to be compiled using the latest
510704bdda0SNicolas Pitre	  ARM ABI (aka EABI).  This is only useful if you are using a user
511704bdda0SNicolas Pitre	  space environment that is also compiled with EABI.
512704bdda0SNicolas Pitre
513704bdda0SNicolas Pitre	  Since there are major incompatibilities between the legacy ABI and
514704bdda0SNicolas Pitre	  EABI, especially with regard to structure member alignment, this
515704bdda0SNicolas Pitre	  option also changes the kernel syscall calling convention to
516704bdda0SNicolas Pitre	  disambiguate both ABIs and allow for backward compatibility support
517704bdda0SNicolas Pitre	  (selected with CONFIG_OABI_COMPAT).
518704bdda0SNicolas Pitre
519704bdda0SNicolas Pitre	  To use this you need GCC version 4.0.0 or later.
520704bdda0SNicolas Pitre
5216c90c872SNicolas Pitreconfig OABI_COMPAT
522a73a3ff1SRussell King	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
52361c484d4SNicolas Pitre	depends on AEABI && EXPERIMENTAL
5246c90c872SNicolas Pitre	default y
5256c90c872SNicolas Pitre	help
5266c90c872SNicolas Pitre	  This option preserves the old syscall interface along with the
5276c90c872SNicolas Pitre	  new (ARM EABI) one. It also provides a compatibility layer to
5286c90c872SNicolas Pitre	  intercept syscalls that have structure arguments which layout
5296c90c872SNicolas Pitre	  in memory differs between the legacy ABI and the new ARM EABI
5306c90c872SNicolas Pitre	  (only for non "thumb" binaries). This option adds a tiny
5316c90c872SNicolas Pitre	  overhead to all syscalls and produces a slightly larger kernel.
5326c90c872SNicolas Pitre	  If you know you'll be using only pure EABI user space then you
5336c90c872SNicolas Pitre	  can say N here. If this option is not selected and you attempt
5346c90c872SNicolas Pitre	  to execute a legacy ABI binary then the result will be
5356c90c872SNicolas Pitre	  UNPREDICTABLE (in fact it can be predicted that it won't work
5366c90c872SNicolas Pitre	  at all). If in doubt say Y.
5376c90c872SNicolas Pitre
5383f22ab27SDave Hansenconfig ARCH_DISCONTIGMEM_ENABLE
5391da177e4SLinus Torvalds	bool
540f7e68bbfSRussell King	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
5411da177e4SLinus Torvalds	help
5421da177e4SLinus Torvalds	  Say Y to support efficient handling of discontiguous physical memory,
5431da177e4SLinus Torvalds	  for architectures which are either NUMA (Non-Uniform Memory Access)
5441da177e4SLinus Torvalds	  or have huge holes in the physical address space for other reasons.
5451da177e4SLinus Torvalds	  See <file:Documentation/vm/numa> for more.
5461da177e4SLinus Torvalds
547c80d79d7SYasunori Gotoconfig NODES_SHIFT
548c80d79d7SYasunori Goto	int
549c80d79d7SYasunori Goto	default "4" if ARCH_LH7A40X
550c80d79d7SYasunori Goto	default "2"
551c80d79d7SYasunori Goto	depends on NEED_MULTIPLE_NODES
552c80d79d7SYasunori Goto
5533f22ab27SDave Hansensource "mm/Kconfig"
5543f22ab27SDave Hansen
5551da177e4SLinus Torvaldsconfig LEDS
5561da177e4SLinus Torvalds	bool "Timer and CPU usage LEDs"
5571da177e4SLinus Torvalds	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
5581da177e4SLinus Torvalds		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
5591da177e4SLinus Torvalds		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
5601da177e4SLinus Torvalds		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
56173a59c1cSSAN People		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
56273a59c1cSSAN People		   ARCH_AT91RM9200
5631da177e4SLinus Torvalds	help
5641da177e4SLinus Torvalds	  If you say Y here, the LEDs on your machine will be used
5651da177e4SLinus Torvalds	  to provide useful information about your current system status.
5661da177e4SLinus Torvalds
5671da177e4SLinus Torvalds	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
5681da177e4SLinus Torvalds	  be able to select which LEDs are active using the options below. If
5691da177e4SLinus Torvalds	  you are compiling a kernel for the EBSA-110 or the LART however, the
5701da177e4SLinus Torvalds	  red LED will simply flash regularly to indicate that the system is
5711da177e4SLinus Torvalds	  still functional. It is safe to say Y here if you have a CATS
5721da177e4SLinus Torvalds	  system, but the driver will do nothing.
5731da177e4SLinus Torvalds
5741da177e4SLinus Torvaldsconfig LEDS_TIMER
5751da177e4SLinus Torvalds	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
5761da177e4SLinus Torvalds			    MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5771da177e4SLinus Torvalds	depends on LEDS
5781da177e4SLinus Torvalds	default y if ARCH_EBSA110
5791da177e4SLinus Torvalds	help
5801da177e4SLinus Torvalds	  If you say Y here, one of the system LEDs (the green one on the
5811da177e4SLinus Torvalds	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
5821da177e4SLinus Torvalds	  will flash regularly to indicate that the system is still
5831da177e4SLinus Torvalds	  operational. This is mainly useful to kernel hackers who are
5841da177e4SLinus Torvalds	  debugging unstable kernels.
5851da177e4SLinus Torvalds
5861da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
5871da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
5881da177e4SLinus Torvalds	  will overrule the CPU usage LED.
5891da177e4SLinus Torvalds
5901da177e4SLinus Torvaldsconfig LEDS_CPU
5911da177e4SLinus Torvalds	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
5921da177e4SLinus Torvalds			!ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
5931da177e4SLinus Torvalds	depends on LEDS
5941da177e4SLinus Torvalds	help
5951da177e4SLinus Torvalds	  If you say Y here, the red LED will be used to give a good real
5961da177e4SLinus Torvalds	  time indication of CPU usage, by lighting whenever the idle task
5971da177e4SLinus Torvalds	  is not currently executing.
5981da177e4SLinus Torvalds
5991da177e4SLinus Torvalds	  The LART uses the same LED for both Timer LED and CPU usage LED
6001da177e4SLinus Torvalds	  functions. You may choose to use both, but the Timer LED function
6011da177e4SLinus Torvalds	  will overrule the CPU usage LED.
6021da177e4SLinus Torvalds
6031da177e4SLinus Torvaldsconfig ALIGNMENT_TRAP
6041da177e4SLinus Torvalds	bool
6051da177e4SLinus Torvalds	default y if !ARCH_EBSA110
6061da177e4SLinus Torvalds	help
6071da177e4SLinus Torvalds	  ARM processors can not fetch/store information which is not
6081da177e4SLinus Torvalds	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
6091da177e4SLinus Torvalds	  address divisible by 4. On 32-bit ARM processors, these non-aligned
6101da177e4SLinus Torvalds	  fetch/store instructions will be emulated in software if you say
6111da177e4SLinus Torvalds	  here, which has a severe performance impact. This is necessary for
6121da177e4SLinus Torvalds	  correct operation of some network protocols. With an IP-only
6131da177e4SLinus Torvalds	  configuration it is safe to say N, otherwise say Y.
6141da177e4SLinus Torvalds
6151da177e4SLinus Torvaldsendmenu
6161da177e4SLinus Torvalds
6171da177e4SLinus Torvaldsmenu "Boot options"
6181da177e4SLinus Torvalds
6191da177e4SLinus Torvalds# Compressed boot loader in ROM.  Yes, we really want to ask about
6201da177e4SLinus Torvalds# TEXT and BSS so we preserve their values in the config files.
6211da177e4SLinus Torvaldsconfig ZBOOT_ROM_TEXT
6221da177e4SLinus Torvalds	hex "Compressed ROM boot loader base address"
6231da177e4SLinus Torvalds	default "0"
6241da177e4SLinus Torvalds	help
6251da177e4SLinus Torvalds	  The physical address at which the ROM-able zImage is to be
6261da177e4SLinus Torvalds	  placed in the target.  Platforms which normally make use of
6271da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
6281da177e4SLinus Torvalds	  value in their defconfig file.
6291da177e4SLinus Torvalds
6301da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
6311da177e4SLinus Torvalds
6321da177e4SLinus Torvaldsconfig ZBOOT_ROM_BSS
6331da177e4SLinus Torvalds	hex "Compressed ROM boot loader BSS address"
6341da177e4SLinus Torvalds	default "0"
6351da177e4SLinus Torvalds	help
6361da177e4SLinus Torvalds	  The base address of 64KiB of read/write memory in the target
6371da177e4SLinus Torvalds	  for the ROM-able zImage, which must be available while the
6381da177e4SLinus Torvalds	  decompressor is running.  Platforms which normally make use of
6391da177e4SLinus Torvalds	  ROM-able zImage formats normally set this to a suitable
6401da177e4SLinus Torvalds	  value in their defconfig file.
6411da177e4SLinus Torvalds
6421da177e4SLinus Torvalds	  If ZBOOT_ROM is not enabled, this has no effect.
6431da177e4SLinus Torvalds
6441da177e4SLinus Torvaldsconfig ZBOOT_ROM
6451da177e4SLinus Torvalds	bool "Compressed boot loader in ROM/flash"
6461da177e4SLinus Torvalds	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
6471da177e4SLinus Torvalds	help
6481da177e4SLinus Torvalds	  Say Y here if you intend to execute your compressed kernel image
6491da177e4SLinus Torvalds	  (zImage) directly from ROM or flash.  If unsure, say N.
6501da177e4SLinus Torvalds
6511da177e4SLinus Torvaldsconfig CMDLINE
6521da177e4SLinus Torvalds	string "Default kernel command string"
6531da177e4SLinus Torvalds	default ""
6541da177e4SLinus Torvalds	help
6551da177e4SLinus Torvalds	  On some architectures (EBSA110 and CATS), there is currently no way
6561da177e4SLinus Torvalds	  for the boot loader to pass arguments to the kernel. For these
6571da177e4SLinus Torvalds	  architectures, you should supply some command-line options at build
6581da177e4SLinus Torvalds	  time by entering them here. As a minimum, you should specify the
6591da177e4SLinus Torvalds	  memory size and the root device (e.g., mem=64M root=/dev/nfs).
6601da177e4SLinus Torvalds
6611da177e4SLinus Torvaldsconfig XIP_KERNEL
6621da177e4SLinus Torvalds	bool "Kernel Execute-In-Place from ROM"
6631da177e4SLinus Torvalds	depends on !ZBOOT_ROM
6641da177e4SLinus Torvalds	help
6651da177e4SLinus Torvalds	  Execute-In-Place allows the kernel to run from non-volatile storage
6661da177e4SLinus Torvalds	  directly addressable by the CPU, such as NOR flash. This saves RAM
6671da177e4SLinus Torvalds	  space since the text section of the kernel is not loaded from flash
6681da177e4SLinus Torvalds	  to RAM.  Read-write sections, such as the data section and stack,
6691da177e4SLinus Torvalds	  are still copied to RAM.  The XIP kernel is not compressed since
6701da177e4SLinus Torvalds	  it has to run directly from flash, so it will take more space to
6711da177e4SLinus Torvalds	  store it.  The flash address used to link the kernel object files,
6721da177e4SLinus Torvalds	  and for storing it, is configuration dependent. Therefore, if you
6731da177e4SLinus Torvalds	  say Y here, you must know the proper physical address where to
6741da177e4SLinus Torvalds	  store the kernel image depending on your own flash memory usage.
6751da177e4SLinus Torvalds
6761da177e4SLinus Torvalds	  Also note that the make target becomes "make xipImage" rather than
6771da177e4SLinus Torvalds	  "make zImage" or "make Image".  The final kernel binary to put in
6781da177e4SLinus Torvalds	  ROM memory will be arch/arm/boot/xipImage.
6791da177e4SLinus Torvalds
6801da177e4SLinus Torvalds	  If unsure, say N.
6811da177e4SLinus Torvalds
6821da177e4SLinus Torvaldsconfig XIP_PHYS_ADDR
6831da177e4SLinus Torvalds	hex "XIP Kernel Physical Location"
6841da177e4SLinus Torvalds	depends on XIP_KERNEL
6851da177e4SLinus Torvalds	default "0x00080000"
6861da177e4SLinus Torvalds	help
6871da177e4SLinus Torvalds	  This is the physical address in your flash memory the kernel will
6881da177e4SLinus Torvalds	  be linked for and stored to.  This address is dependent on your
6891da177e4SLinus Torvalds	  own flash usage.
6901da177e4SLinus Torvalds
6911da177e4SLinus Torvaldsendmenu
6921da177e4SLinus Torvalds
693ec6bced6STony Lindgrenif (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
6941da177e4SLinus Torvalds
6951da177e4SLinus Torvaldsmenu "CPU Frequency scaling"
6961da177e4SLinus Torvalds
6971da177e4SLinus Torvaldssource "drivers/cpufreq/Kconfig"
6981da177e4SLinus Torvalds
6991da177e4SLinus Torvaldsconfig CPU_FREQ_SA1100
7001da177e4SLinus Torvalds	bool
70107c6d48fSVincent Sanders	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
7021da177e4SLinus Torvalds	default y
7031da177e4SLinus Torvalds
7041da177e4SLinus Torvaldsconfig CPU_FREQ_SA1110
7051da177e4SLinus Torvalds	bool
7061da177e4SLinus Torvalds	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
7071da177e4SLinus Torvalds	default y
7081da177e4SLinus Torvalds
7091da177e4SLinus Torvaldsconfig CPU_FREQ_INTEGRATOR
7101da177e4SLinus Torvalds	tristate "CPUfreq driver for ARM Integrator CPUs"
7111da177e4SLinus Torvalds	depends on ARCH_INTEGRATOR && CPU_FREQ
7121da177e4SLinus Torvalds	default y
7131da177e4SLinus Torvalds	help
7141da177e4SLinus Torvalds	  This enables the CPUfreq driver for ARM Integrator CPUs.
7151da177e4SLinus Torvalds
7161da177e4SLinus Torvalds	  For details, take a look at <file:Documentation/cpu-freq>.
7171da177e4SLinus Torvalds
7181da177e4SLinus Torvalds	  If in doubt, say Y.
7191da177e4SLinus Torvalds
7201da177e4SLinus Torvaldsendmenu
7211da177e4SLinus Torvalds
7221da177e4SLinus Torvaldsendif
7231da177e4SLinus Torvalds
7241da177e4SLinus Torvaldsmenu "Floating point emulation"
7251da177e4SLinus Torvalds
7261da177e4SLinus Torvaldscomment "At least one emulation must be selected"
7271da177e4SLinus Torvalds
7281da177e4SLinus Torvaldsconfig FPE_NWFPE
7291da177e4SLinus Torvalds	bool "NWFPE math emulation"
7308993a44cSNicolas Pitre	depends on !AEABI || OABI_COMPAT
7311da177e4SLinus Torvalds	---help---
7321da177e4SLinus Torvalds	  Say Y to include the NWFPE floating point emulator in the kernel.
7331da177e4SLinus Torvalds	  This is necessary to run most binaries. Linux does not currently
7341da177e4SLinus Torvalds	  support floating point hardware so you need to say Y here even if
7351da177e4SLinus Torvalds	  your machine has an FPA or floating point co-processor podule.
7361da177e4SLinus Torvalds
7371da177e4SLinus Torvalds	  You may say N here if you are going to load the Acorn FPEmulator
7381da177e4SLinus Torvalds	  early in the bootup.
7391da177e4SLinus Torvalds
7401da177e4SLinus Torvaldsconfig FPE_NWFPE_XP
7411da177e4SLinus Torvalds	bool "Support extended precision"
742bedf142bSLennert Buytenhek	depends on FPE_NWFPE
7431da177e4SLinus Torvalds	help
7441da177e4SLinus Torvalds	  Say Y to include 80-bit support in the kernel floating-point
7451da177e4SLinus Torvalds	  emulator.  Otherwise, only 32 and 64-bit support is compiled in.
7461da177e4SLinus Torvalds	  Note that gcc does not generate 80-bit operations by default,
7471da177e4SLinus Torvalds	  so in most cases this option only enlarges the size of the
7481da177e4SLinus Torvalds	  floating point emulator without any good reason.
7491da177e4SLinus Torvalds
7501da177e4SLinus Torvalds	  You almost surely want to say N here.
7511da177e4SLinus Torvalds
7521da177e4SLinus Torvaldsconfig FPE_FASTFPE
7531da177e4SLinus Torvalds	bool "FastFPE math emulation (EXPERIMENTAL)"
7548993a44cSNicolas Pitre	depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
7551da177e4SLinus Torvalds	---help---
7561da177e4SLinus Torvalds	  Say Y here to include the FAST floating point emulator in the kernel.
7571da177e4SLinus Torvalds	  This is an experimental much faster emulator which now also has full
7581da177e4SLinus Torvalds	  precision for the mantissa.  It does not support any exceptions.
7591da177e4SLinus Torvalds	  It is very simple, and approximately 3-6 times faster than NWFPE.
7601da177e4SLinus Torvalds
7611da177e4SLinus Torvalds	  It should be sufficient for most programs.  It may be not suitable
7621da177e4SLinus Torvalds	  for scientific calculations, but you have to check this for yourself.
7631da177e4SLinus Torvalds	  If you do not feel you need a faster FP emulation you should better
7641da177e4SLinus Torvalds	  choose NWFPE.
7651da177e4SLinus Torvalds
7661da177e4SLinus Torvaldsconfig VFP
7671da177e4SLinus Torvalds	bool "VFP-format floating point maths"
7681da177e4SLinus Torvalds	depends on CPU_V6 || CPU_ARM926T
7691da177e4SLinus Torvalds	help
7701da177e4SLinus Torvalds	  Say Y to include VFP support code in the kernel. This is needed
7711da177e4SLinus Torvalds	  if your hardware includes a VFP unit.
7721da177e4SLinus Torvalds
7731da177e4SLinus Torvalds	  Please see <file:Documentation/arm/VFP/release-notes.txt> for
7741da177e4SLinus Torvalds	  release notes and additional status information.
7751da177e4SLinus Torvalds
7761da177e4SLinus Torvalds	  Say N if your target does not have VFP hardware.
7771da177e4SLinus Torvalds
7781da177e4SLinus Torvaldsendmenu
7791da177e4SLinus Torvalds
7801da177e4SLinus Torvaldsmenu "Userspace binary formats"
7811da177e4SLinus Torvalds
7821da177e4SLinus Torvaldssource "fs/Kconfig.binfmt"
7831da177e4SLinus Torvalds
7841da177e4SLinus Torvaldsconfig ARTHUR
7851da177e4SLinus Torvalds	tristate "RISC OS personality"
786704bdda0SNicolas Pitre	depends on !AEABI
7871da177e4SLinus Torvalds	help
7881da177e4SLinus Torvalds	  Say Y here to include the kernel code necessary if you want to run
7891da177e4SLinus Torvalds	  Acorn RISC OS/Arthur binaries under Linux. This code is still very
7901da177e4SLinus Torvalds	  experimental; if this sounds frightening, say N and sleep in peace.
7911da177e4SLinus Torvalds	  You can also say M here to compile this support as a module (which
7921da177e4SLinus Torvalds	  will be called arthur).
7931da177e4SLinus Torvalds
7941da177e4SLinus Torvaldsendmenu
7951da177e4SLinus Torvalds
7961da177e4SLinus Torvaldsmenu "Power management options"
7971da177e4SLinus Torvalds
798eceab4acSRussell Kingsource "kernel/power/Kconfig"
7991da177e4SLinus Torvalds
8001da177e4SLinus Torvaldsconfig APM
8011da177e4SLinus Torvalds	tristate "Advanced Power Management Emulation"
8021da177e4SLinus Torvalds	---help---
8031da177e4SLinus Torvalds	  APM is a BIOS specification for saving power using several different
8041da177e4SLinus Torvalds	  techniques. This is mostly useful for battery powered laptops with
8051da177e4SLinus Torvalds	  APM compliant BIOSes. If you say Y here, the system time will be
8061da177e4SLinus Torvalds	  reset after a RESUME operation, the /proc/apm device will provide
8071da177e4SLinus Torvalds	  battery status information, and user-space programs will receive
8081da177e4SLinus Torvalds	  notification of APM "events" (e.g. battery status change).
8091da177e4SLinus Torvalds
8101da177e4SLinus Torvalds	  In order to use APM, you will need supporting software. For location
8111da177e4SLinus Torvalds	  and more information, read <file:Documentation/pm.txt> and the
8121da177e4SLinus Torvalds	  Battery Powered Linux mini-HOWTO, available from
8131da177e4SLinus Torvalds	  <http://www.tldp.org/docs.html#howto>.
8141da177e4SLinus Torvalds
8151da177e4SLinus Torvalds	  This driver does not spin down disk drives (see the hdparm(8)
8161da177e4SLinus Torvalds	  manpage ("man 8 hdparm") for that), and it doesn't turn off
8171da177e4SLinus Torvalds	  VESA-compliant "green" monitors.
8181da177e4SLinus Torvalds
8191da177e4SLinus Torvalds	  Generally, if you don't have a battery in your machine, there isn't
8201da177e4SLinus Torvalds	  much point in using this driver and you should say N. If you get
8211da177e4SLinus Torvalds	  random kernel OOPSes or reboots that don't seem to be related to
8221da177e4SLinus Torvalds	  anything, try disabling/enabling this option (or disabling/enabling
8231da177e4SLinus Torvalds	  APM in your BIOS).
8241da177e4SLinus Torvalds
8251da177e4SLinus Torvaldsendmenu
8261da177e4SLinus Torvalds
827d5950b43SSam Ravnborgsource "net/Kconfig"
828d5950b43SSam Ravnborg
8291da177e4SLinus Torvaldsmenu "Device Drivers"
8301da177e4SLinus Torvalds
8311da177e4SLinus Torvaldssource "drivers/base/Kconfig"
8321da177e4SLinus Torvalds
833c35bf4a5SPavel Macheksource "drivers/connector/Kconfig"
834c35bf4a5SPavel Machek
8351da177e4SLinus Torvaldsif ALIGNMENT_TRAP
8361da177e4SLinus Torvaldssource "drivers/mtd/Kconfig"
8371da177e4SLinus Torvaldsendif
8381da177e4SLinus Torvalds
8391da177e4SLinus Torvaldssource "drivers/parport/Kconfig"
8401da177e4SLinus Torvalds
8411da177e4SLinus Torvaldssource "drivers/pnp/Kconfig"
8421da177e4SLinus Torvalds
8431da177e4SLinus Torvaldssource "drivers/block/Kconfig"
8441da177e4SLinus Torvalds
8451da177e4SLinus Torvaldssource "drivers/acorn/block/Kconfig"
8461da177e4SLinus Torvalds
847bb011b8eSDavid Brownellif PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
848bb011b8eSDavid Brownell	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
849c4713074SLennert Buytenhek	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
850c4713074SLennert Buytenhek	|| ARCH_IXP23XX
8511da177e4SLinus Torvaldssource "drivers/ide/Kconfig"
8521da177e4SLinus Torvaldsendif
8531da177e4SLinus Torvalds
8541da177e4SLinus Torvaldssource "drivers/scsi/Kconfig"
8551da177e4SLinus Torvalds
8561da177e4SLinus Torvaldssource "drivers/md/Kconfig"
8571da177e4SLinus Torvalds
8581da177e4SLinus Torvaldssource "drivers/message/fusion/Kconfig"
8591da177e4SLinus Torvalds
8601da177e4SLinus Torvaldssource "drivers/ieee1394/Kconfig"
8611da177e4SLinus Torvalds
8621da177e4SLinus Torvaldssource "drivers/message/i2o/Kconfig"
8631da177e4SLinus Torvalds
864d5950b43SSam Ravnborgsource "drivers/net/Kconfig"
8651da177e4SLinus Torvalds
8661da177e4SLinus Torvaldssource "drivers/isdn/Kconfig"
8671da177e4SLinus Torvalds
8681da177e4SLinus Torvalds# input before char - char/joystick depends on it. As does USB.
8691da177e4SLinus Torvalds
8701da177e4SLinus Torvaldssource "drivers/input/Kconfig"
8711da177e4SLinus Torvalds
8721da177e4SLinus Torvaldssource "drivers/char/Kconfig"
8731da177e4SLinus Torvalds
8741da177e4SLinus Torvaldssource "drivers/i2c/Kconfig"
8751da177e4SLinus Torvalds
8768ae12a0dSDavid Brownellsource "drivers/spi/Kconfig"
8778ae12a0dSDavid Brownell
87804916c0eSAlessandro Zummosource "drivers/w1/Kconfig"
87904916c0eSAlessandro Zummo
880ad2f931dSJean Delvaresource "drivers/hwmon/Kconfig"
881ad2f931dSJean Delvare
8821da177e4SLinus Torvalds#source "drivers/l3/Kconfig"
8831da177e4SLinus Torvalds
8841da177e4SLinus Torvaldssource "drivers/misc/Kconfig"
8851da177e4SLinus Torvalds
886a4e137abSRussell Kingsource "drivers/mfd/Kconfig"
887a4e137abSRussell King
888c72a1d60SRichard Purdiesource "drivers/leds/Kconfig"
889c72a1d60SRichard Purdie
8901da177e4SLinus Torvaldssource "drivers/media/Kconfig"
8911da177e4SLinus Torvalds
8921da177e4SLinus Torvaldssource "drivers/video/Kconfig"
8931da177e4SLinus Torvalds
8941da177e4SLinus Torvaldssource "sound/Kconfig"
8951da177e4SLinus Torvalds
8961da177e4SLinus Torvaldssource "drivers/usb/Kconfig"
8971da177e4SLinus Torvalds
8981da177e4SLinus Torvaldssource "drivers/mmc/Kconfig"
8991da177e4SLinus Torvalds
90012b824fbSAlessandro Zummosource "drivers/rtc/Kconfig"
90112b824fbSAlessandro Zummo
9021da177e4SLinus Torvaldsendmenu
9031da177e4SLinus Torvalds
9041da177e4SLinus Torvaldssource "fs/Kconfig"
9051da177e4SLinus Torvalds
9061da177e4SLinus Torvaldssource "arch/arm/oprofile/Kconfig"
9071da177e4SLinus Torvalds
9081da177e4SLinus Torvaldssource "arch/arm/Kconfig.debug"
9091da177e4SLinus Torvalds
9101da177e4SLinus Torvaldssource "security/Kconfig"
9111da177e4SLinus Torvalds
9121da177e4SLinus Torvaldssource "crypto/Kconfig"
9131da177e4SLinus Torvalds
9141da177e4SLinus Torvaldssource "lib/Kconfig"
915