2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
12 select SYS_SUPPORTS_APM_EMULATION
14 select HAVE_KPROBES if (!XIP_KERNEL)
16 The ARM series is a line of low-power-consumption RISC chip designs
17 licensed by ARM Ltd and targeted at embedded applications and
18 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
19 manufactured, but legacy ARM-based PC hardware remains popular in
20 Europe. There is an ARM Linux project with a web page at
21 <http://www.arm.linux.org.uk/>.
23 config SYS_SUPPORTS_APM_EMULATION
34 config GENERIC_CLOCKEVENTS
38 config GENERIC_CLOCKEVENTS_BROADCAST
40 depends on GENERIC_CLOCKEVENTS
41 default y if SMP && !LOCAL_TIMERS
54 The Extended Industry Standard Architecture (EISA) bus was
55 developed as an open alternative to the IBM MicroChannel bus.
57 The EISA bus provided some of the features of the IBM MicroChannel
58 bus while maintaining backward compatibility with cards made for
59 the older ISA bus. The EISA bus saw limited use between 1988 and
60 1995 when it was made obsolete by the PCI bus.
62 Say Y here if you are building a kernel for an EISA-based machine.
72 MicroChannel Architecture is found in some IBM PS/2 machines and
73 laptops. It is a bus system similar to PCI or ISA. See
74 <file:Documentation/mca.txt> (and especially the web page given
75 there) before attempting to build an MCA bus kernel.
77 config GENERIC_HARDIRQS
81 config STACKTRACE_SUPPORT
85 config LOCKDEP_SUPPORT
89 config TRACE_IRQFLAGS_SUPPORT
93 config HARDIRQS_SW_RESEND
97 config GENERIC_IRQ_PROBE
101 config GENERIC_LOCKBREAK
104 depends on SMP && PREEMPT
106 config RWSEM_GENERIC_SPINLOCK
110 config RWSEM_XCHGADD_ALGORITHM
113 config ARCH_HAS_ILOG2_U32
117 config ARCH_HAS_ILOG2_U64
121 config GENERIC_HWEIGHT
125 config GENERIC_CALIBRATE_DELAY
129 config ARCH_MAY_HAVE_PC_FDC
136 config GENERIC_ISA_DMA
147 config OPROFILE_ARMV6
149 depends on CPU_V6 && !SMP
150 select OPROFILE_ARM11_CORE
152 config OPROFILE_MPCORE
154 depends on CPU_V6 && SMP
155 select OPROFILE_ARM11_CORE
157 config OPROFILE_ARM11_CORE
164 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
165 default DRAM_BASE if REMAP_VECTORS_TO_RAM
168 The base address of exception vectors.
170 source "init/Kconfig"
175 prompt "ARM system type"
176 default ARCH_VERSATILE
179 bool "Agilent AAEC-2000 based"
182 This enables support for systems based on the Agilent AAEC-2000
184 config ARCH_INTEGRATOR
185 bool "ARM Ltd. Integrator family"
189 Support for ARM's Integrator platform.
192 bool "ARM Ltd. RealView family"
196 select GENERIC_CLOCKEVENTS
198 This enables support for ARM Ltd RealView boards.
200 config ARCH_VERSATILE
201 bool "ARM Ltd. Versatile family"
206 select GENERIC_CLOCKEVENTS
208 This enables support for ARM Ltd Versatile board.
214 This enables support for systems based on the Atmel AT91RM9200,
215 AT91SAM9 and AT91CAP9 processors.
218 bool "Cirrus CL-PS7500FE"
223 Support for the Cirrus Logic PS7500FE system-on-a-chip.
226 bool "Cirrus Logic CLPS711x/EP721x-based"
228 Support for Cirrus Logic 711x/721x based boards.
233 select FOOTBRIDGE_ADDIN
235 Support for Intel's EBSA285 companion chip.
242 This is an evaluation board for the StrongARM processor available
243 from Digital. It has limited hardware on-board, including an
244 Ethernet interface, two PCMCIA sockets, two serial ports and a
253 This enables support for the Cirrus EP93xx series of CPUs.
255 config ARCH_FOOTBRIDGE
259 Support for systems based on the DC21285 companion chip
260 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
263 bool "Hilscher NetX based"
266 This enables support for systems based on the Hilscher NetX Soc
269 bool "Hynix HMS720x-based"
272 This enables support for systems based on the Hynix HMS720x
278 select GENERIC_CLOCKEVENTS
280 Support for Motorola's i.MX family of processors (MX1, MXL).
287 select ARCH_SUPPORTS_MSI
289 Support for Intel's IOP13XX (XScale) family of processors.
297 Support for Intel's 80219 and IOP32X (XScale) family of
306 Support for Intel's IOP33X (XScale) family of processors.
313 Support for Intel's IXP23xx (XScale) family of processors.
316 bool "IXP2400/2800-based"
320 Support for Intel's IXP2400/2800 (XScale) family of processors.
327 select GENERIC_CLOCKEVENTS
329 Support for Intel's IXP4XX (XScale) family of processors.
335 Say Y here if you intend to run this kernel on a LinkUp Systems
336 L7200 Software Development Board which uses an ARM720T processor.
337 Information on this board can be obtained at:
339 <http://www.linkupsys.com/>
341 If you have any questions or comments about the Linux kernel port
342 to this board, send e-mail to <sjhill@cotw.com>.
345 bool "Micrel/Kendin KS8695"
348 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
349 System-on-Chip devices.
352 bool "NetSilicon NS9xxx"
355 select GENERIC_CLOCKEVENTS
357 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
360 <http://www.digi.com/products/microprocessors/index.jsp>
363 bool "Freescale MXC/iMX-based"
366 Support for Freescale MXC/iMX-based family of processors
374 select GENERIC_CLOCKEVENTS
376 Support for Marvell Orion System on Chip family.
379 bool "Philips Nexperia PNX4008 Mobile"
381 This enables support for Philips PNX4008 mobile platform.
384 bool "PXA2xx/PXA3xx-based"
389 select GENERIC_CLOCKEVENTS
392 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
399 select ARCH_MAY_HAVE_PC_FDC
403 On the Acorn Risc-PC, Linux can support the internal IDE disk and
404 CD-ROM interface, serial and parallel port, and the floppy drive.
409 select ARCH_DISCONTIGMEM_ENABLE
414 Support for StrongARM 11x0 based boards.
417 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
420 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
421 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
422 the Samsung SMDK2410 development board (and derivatives).
430 Support for the StrongARM based Digital DNARD machine, also known
431 as "Shark" (<http://www.shark-linux.de/shark.html>).
436 Say Y here for systems based on one of the Sharp LH7A40X
437 System on a Chip processors. These CPUs include an ARM922T
438 core with a wide array of integrated devices for
439 hand-held and low-power applications.
444 select GENERIC_CLOCKEVENTS
447 Support for TI's DaVinci platform.
454 Support for TI's OMAP platform (OMAP1 and OMAP2).
457 bool "Qualcomm MSM7X00A"
459 select GENERIC_CLOCKEVENTS
461 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
462 apps processor of the MSM7X00A and depends on a shared memory
463 interface to the ARM9 modem processor which runs the baseband stack
464 and controls some vital subsystems (clock and power control, etc).
465 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
469 source "arch/arm/mach-clps711x/Kconfig"
471 source "arch/arm/mach-ep93xx/Kconfig"
473 source "arch/arm/mach-footbridge/Kconfig"
475 source "arch/arm/mach-integrator/Kconfig"
477 source "arch/arm/mach-iop32x/Kconfig"
479 source "arch/arm/mach-iop33x/Kconfig"
481 source "arch/arm/mach-iop13xx/Kconfig"
483 source "arch/arm/mach-ixp4xx/Kconfig"
485 source "arch/arm/mach-ixp2000/Kconfig"
487 source "arch/arm/mach-ixp23xx/Kconfig"
489 source "arch/arm/mach-pxa/Kconfig"
491 source "arch/arm/mach-sa1100/Kconfig"
493 source "arch/arm/plat-omap/Kconfig"
495 source "arch/arm/mach-omap1/Kconfig"
497 source "arch/arm/mach-omap2/Kconfig"
499 source "arch/arm/mach-orion/Kconfig"
501 source "arch/arm/plat-s3c24xx/Kconfig"
502 source "arch/arm/plat-s3c/Kconfig"
505 source "arch/arm/mach-s3c2400/Kconfig"
506 source "arch/arm/mach-s3c2410/Kconfig"
507 source "arch/arm/mach-s3c2412/Kconfig"
508 source "arch/arm/mach-s3c2440/Kconfig"
509 source "arch/arm/mach-s3c2442/Kconfig"
510 source "arch/arm/mach-s3c2443/Kconfig"
513 source "arch/arm/mach-lh7a40x/Kconfig"
515 source "arch/arm/mach-imx/Kconfig"
517 source "arch/arm/mach-h720x/Kconfig"
519 source "arch/arm/mach-versatile/Kconfig"
521 source "arch/arm/mach-aaec2000/Kconfig"
523 source "arch/arm/mach-realview/Kconfig"
525 source "arch/arm/mach-at91/Kconfig"
527 source "arch/arm/plat-mxc/Kconfig"
529 source "arch/arm/mach-netx/Kconfig"
531 source "arch/arm/mach-ns9xxx/Kconfig"
533 source "arch/arm/mach-davinci/Kconfig"
535 source "arch/arm/mach-ks8695/Kconfig"
537 source "arch/arm/mach-msm/Kconfig"
539 # Definitions to make life easier
546 source arch/arm/mm/Kconfig
549 bool "Enable iWMMXt support"
550 depends on CPU_XSCALE || CPU_XSC3
551 default y if PXA27x || PXA3xx
553 Enable support for iWMMXt context switching at run time if
554 running on a CPU that supports it.
556 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
559 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
563 source "arch/arm/Kconfig-nommu"
568 source "arch/arm/common/Kconfig"
570 config FORCE_MAX_ZONEORDER
583 Find out whether you have ISA slots on your motherboard. ISA is the
584 name of a bus system, i.e. the way the CPU talks to the other stuff
585 inside your box. Other bus systems are PCI, EISA, MicroChannel
586 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
587 newer boards don't support it. If you have ISA, say Y, otherwise N.
589 # Select ISA DMA controller support
594 # Select ISA DMA interface
599 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
601 Find out whether you have a PCI motherboard. PCI is the name of a
602 bus system, i.e. the way the CPU talks to the other stuff inside
603 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
604 VESA. If you have PCI, say Y, otherwise N.
609 # Select the host bridge type
610 config PCI_HOST_VIA82C505
612 depends on PCI && ARCH_SHARK
615 config PCI_HOST_ITE8152
617 depends on PCI && MACH_ARMCORE
621 source "drivers/pci/Kconfig"
623 source "drivers/pcmcia/Kconfig"
627 menu "Kernel Features"
629 source "kernel/time/Kconfig"
632 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
633 depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP
635 This enables support for systems with more than one CPU. If you have
636 a system with only one CPU, like most personal computers, say N. If
637 you have a system with more than one CPU, say Y.
639 If you say N here, the kernel will run on single and multiprocessor
640 machines, but will use only one CPU of a multiprocessor machine. If
641 you say Y here, the kernel will run on many, but not all, single
642 processor machines. On a single processor machine, the kernel will
643 run faster if you say N here.
645 See also <file:Documentation/i386/IO-APIC.txt>,
646 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
647 <http://www.linuxdoc.org/docs.html#howto>.
649 If you don't know what to do here, say N.
652 int "Maximum number of CPUs (2-32)"
658 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
659 depends on SMP && HOTPLUG && EXPERIMENTAL
661 Say Y here to experiment with turning CPUs off and on. CPUs
662 can be controlled through /sys/devices/system/cpu.
665 bool "Use local timer interrupts"
666 depends on SMP && REALVIEW_EB_ARM11MP
669 Enable support for local timers on SMP platforms, rather then the
670 legacy IPI broadcast method. Local timers allows the system
671 accounting to be spread across the timer interval, preventing a
672 "thundering herd" at every timer tick.
675 bool "Preemptible Kernel (EXPERIMENTAL)"
676 depends on EXPERIMENTAL
678 This option reduces the latency of the kernel when reacting to
679 real-time or interactive events by allowing a low priority process to
680 be preempted even if it is in kernel mode executing a system call.
681 This allows applications to run more reliably even when the system is
684 Say Y here if you are building a kernel for a desktop, embedded
685 or real-time system. Say N if you are unsure.
688 bool "Dynamic tick timer"
689 depends on !GENERIC_CLOCKEVENTS
691 Select this option if you want to disable continuous timer ticks
692 and have them programmed to occur as required. This option saves
693 power as the system can remain in idle state for longer.
695 By default dynamic tick is disabled during the boot, and can be
696 manually enabled with:
698 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
700 Alternatively, if you want dynamic tick automatically enabled
701 during boot, pass "dyntick=enable" via the kernel command string.
703 Please note that dynamic tick may affect the accuracy of
704 timekeeping on some platforms depending on the implementation.
705 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
706 to have accurate timekeeping with dynamic tick.
710 default 128 if ARCH_L7200
711 default 200 if ARCH_EBSA110 || ARCH_S3C2410
712 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
713 default AT91_TIMER_HZ if ARCH_AT91
717 bool "Use the ARM EABI to compile the kernel"
719 This option allows for the kernel to be compiled using the latest
720 ARM ABI (aka EABI). This is only useful if you are using a user
721 space environment that is also compiled with EABI.
723 Since there are major incompatibilities between the legacy ABI and
724 EABI, especially with regard to structure member alignment, this
725 option also changes the kernel syscall calling convention to
726 disambiguate both ABIs and allow for backward compatibility support
727 (selected with CONFIG_OABI_COMPAT).
729 To use this you need GCC version 4.0.0 or later.
732 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
733 depends on AEABI && EXPERIMENTAL
736 This option preserves the old syscall interface along with the
737 new (ARM EABI) one. It also provides a compatibility layer to
738 intercept syscalls that have structure arguments which layout
739 in memory differs between the legacy ABI and the new ARM EABI
740 (only for non "thumb" binaries). This option adds a tiny
741 overhead to all syscalls and produces a slightly larger kernel.
742 If you know you'll be using only pure EABI user space then you
743 can say N here. If this option is not selected and you attempt
744 to execute a legacy ABI binary then the result will be
745 UNPREDICTABLE (in fact it can be predicted that it won't work
746 at all). If in doubt say Y.
748 config ARCH_DISCONTIGMEM_ENABLE
750 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
752 Say Y to support efficient handling of discontiguous physical memory,
753 for architectures which are either NUMA (Non-Uniform Memory Access)
754 or have huge holes in the physical address space for other reasons.
755 See <file:Documentation/vm/numa> for more.
759 default "4" if ARCH_LH7A40X
761 depends on NEED_MULTIPLE_NODES
766 bool "Timer and CPU usage LEDs"
767 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
768 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
769 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
770 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
771 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
772 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
773 ARCH_KS8695 || MACH_RD88F5182
775 If you say Y here, the LEDs on your machine will be used
776 to provide useful information about your current system status.
778 If you are compiling a kernel for a NetWinder or EBSA-285, you will
779 be able to select which LEDs are active using the options below. If
780 you are compiling a kernel for the EBSA-110 or the LART however, the
781 red LED will simply flash regularly to indicate that the system is
782 still functional. It is safe to say Y here if you have a CATS
783 system, but the driver will do nothing.
786 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
787 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
788 || MACH_OMAP_PERSEUS2
790 depends on !GENERIC_CLOCKEVENTS
791 default y if ARCH_EBSA110
793 If you say Y here, one of the system LEDs (the green one on the
794 NetWinder, the amber one on the EBSA285, or the red one on the LART)
795 will flash regularly to indicate that the system is still
796 operational. This is mainly useful to kernel hackers who are
797 debugging unstable kernels.
799 The LART uses the same LED for both Timer LED and CPU usage LED
800 functions. You may choose to use both, but the Timer LED function
801 will overrule the CPU usage LED.
804 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
806 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
807 || MACH_OMAP_PERSEUS2
810 If you say Y here, the red LED will be used to give a good real
811 time indication of CPU usage, by lighting whenever the idle task
812 is not currently executing.
814 The LART uses the same LED for both Timer LED and CPU usage LED
815 functions. You may choose to use both, but the Timer LED function
816 will overrule the CPU usage LED.
818 config ALIGNMENT_TRAP
820 depends on CPU_CP15_MMU
821 default y if !ARCH_EBSA110
823 ARM processors cannot fetch/store information which is not
824 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
825 address divisible by 4. On 32-bit ARM processors, these non-aligned
826 fetch/store instructions will be emulated in software if you say
827 here, which has a severe performance impact. This is necessary for
828 correct operation of some network protocols. With an IP-only
829 configuration it is safe to say N, otherwise say Y.
835 # Compressed boot loader in ROM. Yes, we really want to ask about
836 # TEXT and BSS so we preserve their values in the config files.
837 config ZBOOT_ROM_TEXT
838 hex "Compressed ROM boot loader base address"
841 The physical address at which the ROM-able zImage is to be
842 placed in the target. Platforms which normally make use of
843 ROM-able zImage formats normally set this to a suitable
844 value in their defconfig file.
846 If ZBOOT_ROM is not enabled, this has no effect.
849 hex "Compressed ROM boot loader BSS address"
852 The base address of an area of read/write memory in the target
853 for the ROM-able zImage which must be available while the
854 decompressor is running. It must be large enough to hold the
855 entire decompressed kernel plus an additional 128 KiB.
856 Platforms which normally make use of ROM-able zImage formats
857 normally set this to a suitable value in their defconfig file.
859 If ZBOOT_ROM is not enabled, this has no effect.
862 bool "Compressed boot loader in ROM/flash"
863 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
865 Say Y here if you intend to execute your compressed kernel image
866 (zImage) directly from ROM or flash. If unsure, say N.
869 string "Default kernel command string"
872 On some architectures (EBSA110 and CATS), there is currently no way
873 for the boot loader to pass arguments to the kernel. For these
874 architectures, you should supply some command-line options at build
875 time by entering them here. As a minimum, you should specify the
876 memory size and the root device (e.g., mem=64M root=/dev/nfs).
879 bool "Kernel Execute-In-Place from ROM"
880 depends on !ZBOOT_ROM
882 Execute-In-Place allows the kernel to run from non-volatile storage
883 directly addressable by the CPU, such as NOR flash. This saves RAM
884 space since the text section of the kernel is not loaded from flash
885 to RAM. Read-write sections, such as the data section and stack,
886 are still copied to RAM. The XIP kernel is not compressed since
887 it has to run directly from flash, so it will take more space to
888 store it. The flash address used to link the kernel object files,
889 and for storing it, is configuration dependent. Therefore, if you
890 say Y here, you must know the proper physical address where to
891 store the kernel image depending on your own flash memory usage.
893 Also note that the make target becomes "make xipImage" rather than
894 "make zImage" or "make Image". The final kernel binary to put in
895 ROM memory will be arch/arm/boot/xipImage.
900 hex "XIP Kernel Physical Location"
901 depends on XIP_KERNEL
904 This is the physical address in your flash memory the kernel will
905 be linked for and stored to. This address is dependent on your
909 bool "Kexec system call (EXPERIMENTAL)"
910 depends on EXPERIMENTAL
912 kexec is a system call that implements the ability to shutdown your
913 current kernel, and to start another kernel. It is like a reboot
914 but it is independent of the system firmware. And like a reboot
915 you can start any kernel with it, not just Linux.
917 It is an ongoing process to be certain the hardware in a machine
918 is properly shutdown, so do not be surprised if this code does not
919 initially work for you. It may help to enable device hotplugging
923 bool "Export atags in procfs"
926 Should the atags used to boot the kernel be exported in an "atags"
927 file in procfs. Useful with kexec.
931 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
933 menu "CPU Frequency scaling"
935 source "drivers/cpufreq/Kconfig"
937 config CPU_FREQ_SA1100
939 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
942 config CPU_FREQ_SA1110
944 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
947 config CPU_FREQ_INTEGRATOR
948 tristate "CPUfreq driver for ARM Integrator CPUs"
949 depends on ARCH_INTEGRATOR && CPU_FREQ
952 This enables the CPUfreq driver for ARM Integrator CPUs.
954 For details, take a look at <file:Documentation/cpu-freq>.
959 tristate "CPUfreq driver for i.MX CPUs"
960 depends on ARCH_IMX && CPU_FREQ
963 This enables the CPUfreq driver for i.MX CPUs.
969 depends on CPU_FREQ && ARCH_PXA && PXA25x
971 select CPU_FREQ_DEFAULT_GOV_USERSPACE
977 menu "Floating point emulation"
979 comment "At least one emulation must be selected"
982 bool "NWFPE math emulation"
983 depends on !AEABI || OABI_COMPAT
985 Say Y to include the NWFPE floating point emulator in the kernel.
986 This is necessary to run most binaries. Linux does not currently
987 support floating point hardware so you need to say Y here even if
988 your machine has an FPA or floating point co-processor podule.
990 You may say N here if you are going to load the Acorn FPEmulator
994 bool "Support extended precision"
997 Say Y to include 80-bit support in the kernel floating-point
998 emulator. Otherwise, only 32 and 64-bit support is compiled in.
999 Note that gcc does not generate 80-bit operations by default,
1000 so in most cases this option only enlarges the size of the
1001 floating point emulator without any good reason.
1003 You almost surely want to say N here.
1006 bool "FastFPE math emulation (EXPERIMENTAL)"
1007 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1009 Say Y here to include the FAST floating point emulator in the kernel.
1010 This is an experimental much faster emulator which now also has full
1011 precision for the mantissa. It does not support any exceptions.
1012 It is very simple, and approximately 3-6 times faster than NWFPE.
1014 It should be sufficient for most programs. It may be not suitable
1015 for scientific calculations, but you have to check this for yourself.
1016 If you do not feel you need a faster FP emulation you should better
1020 bool "VFP-format floating point maths"
1021 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1023 Say Y to include VFP support code in the kernel. This is needed
1024 if your hardware includes a VFP unit.
1026 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1027 release notes and additional status information.
1029 Say N if your target does not have VFP hardware.
1037 bool "Advanced SIMD (NEON) Extension support"
1038 depends on VFPv3 && CPU_V7
1040 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1045 menu "Userspace binary formats"
1047 source "fs/Kconfig.binfmt"
1050 tristate "RISC OS personality"
1053 Say Y here to include the kernel code necessary if you want to run
1054 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1055 experimental; if this sounds frightening, say N and sleep in peace.
1056 You can also say M here to compile this support as a module (which
1057 will be called arthur).
1061 menu "Power management options"
1063 source "kernel/power/Kconfig"
1065 config ARCH_SUSPEND_POSSIBLE
1070 source "net/Kconfig"
1072 menu "Device Drivers"
1074 source "drivers/base/Kconfig"
1076 source "drivers/connector/Kconfig"
1078 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1079 source "drivers/mtd/Kconfig"
1082 source "drivers/parport/Kconfig"
1084 source "drivers/pnp/Kconfig"
1086 source "drivers/block/Kconfig"
1088 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1090 source "drivers/misc/Kconfig"
1092 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
1093 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
1094 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
1096 source "drivers/ide/Kconfig"
1099 source "drivers/scsi/Kconfig"
1101 source "drivers/ata/Kconfig"
1103 source "drivers/md/Kconfig"
1105 source "drivers/message/fusion/Kconfig"
1107 source "drivers/ieee1394/Kconfig"
1109 source "drivers/message/i2o/Kconfig"
1111 source "drivers/net/Kconfig"
1113 source "drivers/isdn/Kconfig"
1115 # input before char - char/joystick depends on it. As does USB.
1117 source "drivers/input/Kconfig"
1119 source "drivers/char/Kconfig"
1121 source "drivers/i2c/Kconfig"
1123 source "drivers/spi/Kconfig"
1125 source "drivers/gpio/Kconfig"
1127 source "drivers/w1/Kconfig"
1129 source "drivers/power/Kconfig"
1131 source "drivers/hwmon/Kconfig"
1133 source "drivers/watchdog/Kconfig"
1135 source "drivers/ssb/Kconfig"
1137 #source "drivers/l3/Kconfig"
1139 source "drivers/mfd/Kconfig"
1141 source "drivers/media/Kconfig"
1143 source "drivers/video/Kconfig"
1145 source "sound/Kconfig"
1147 source "drivers/hid/Kconfig"
1149 source "drivers/usb/Kconfig"
1151 source "drivers/mmc/Kconfig"
1153 source "drivers/leds/Kconfig"
1155 source "drivers/rtc/Kconfig"
1157 source "drivers/dma/Kconfig"
1159 source "drivers/dca/Kconfig"
1165 source "arch/arm/Kconfig.debug"
1167 source "security/Kconfig"
1169 source "crypto/Kconfig"
1171 source "lib/Kconfig"