2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
13 select SYS_SUPPORTS_APM_EMULATION
15 select HAVE_KPROBES if (!XIP_KERNEL)
16 select HAVE_KRETPROBES if (HAVE_KPROBES)
18 The ARM series is a line of low-power-consumption RISC chip designs
19 licensed by ARM Ltd and targeted at embedded applications and
20 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
21 manufactured, but legacy ARM-based PC hardware remains popular in
22 Europe. There is an ARM Linux project with a web page at
23 <http://www.arm.linux.org.uk/>.
25 config SYS_SUPPORTS_APM_EMULATION
36 config GENERIC_CLOCKEVENTS
40 config GENERIC_CLOCKEVENTS_BROADCAST
42 depends on GENERIC_CLOCKEVENTS
43 default y if SMP && !LOCAL_TIMERS
56 The Extended Industry Standard Architecture (EISA) bus was
57 developed as an open alternative to the IBM MicroChannel bus.
59 The EISA bus provided some of the features of the IBM MicroChannel
60 bus while maintaining backward compatibility with cards made for
61 the older ISA bus. The EISA bus saw limited use between 1988 and
62 1995 when it was made obsolete by the PCI bus.
64 Say Y here if you are building a kernel for an EISA-based machine.
74 MicroChannel Architecture is found in some IBM PS/2 machines and
75 laptops. It is a bus system similar to PCI or ISA. See
76 <file:Documentation/mca.txt> (and especially the web page given
77 there) before attempting to build an MCA bus kernel.
79 config GENERIC_HARDIRQS
83 config STACKTRACE_SUPPORT
87 config LOCKDEP_SUPPORT
91 config TRACE_IRQFLAGS_SUPPORT
95 config HARDIRQS_SW_RESEND
99 config GENERIC_IRQ_PROBE
103 config GENERIC_LOCKBREAK
106 depends on SMP && PREEMPT
108 config RWSEM_GENERIC_SPINLOCK
112 config RWSEM_XCHGADD_ALGORITHM
115 config ARCH_HAS_ILOG2_U32
119 config ARCH_HAS_ILOG2_U64
123 config GENERIC_HWEIGHT
127 config GENERIC_CALIBRATE_DELAY
131 config ARCH_SUPPORTS_AOUT
134 config ARCH_MAY_HAVE_PC_FDC
141 config GENERIC_ISA_DMA
152 config OPROFILE_ARMV6
154 depends on CPU_V6 && !SMP
155 select OPROFILE_ARM11_CORE
157 config OPROFILE_MPCORE
159 depends on CPU_V6 && SMP
160 select OPROFILE_ARM11_CORE
162 config OPROFILE_ARM11_CORE
169 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
170 default DRAM_BASE if REMAP_VECTORS_TO_RAM
173 The base address of exception vectors.
175 source "init/Kconfig"
180 prompt "ARM system type"
181 default ARCH_VERSATILE
184 bool "Agilent AAEC-2000 based"
187 This enables support for systems based on the Agilent AAEC-2000
189 config ARCH_INTEGRATOR
190 bool "ARM Ltd. Integrator family"
194 Support for ARM's Integrator platform.
197 bool "ARM Ltd. RealView family"
201 select GENERIC_CLOCKEVENTS
203 This enables support for ARM Ltd RealView boards.
205 config ARCH_VERSATILE
206 bool "ARM Ltd. Versatile family"
211 select GENERIC_CLOCKEVENTS
213 This enables support for ARM Ltd Versatile board.
219 This enables support for systems based on the Atmel AT91RM9200,
220 AT91SAM9 and AT91CAP9 processors.
223 bool "Cirrus CL-PS7500FE"
228 Support for the Cirrus Logic PS7500FE system-on-a-chip.
231 bool "Cirrus Logic CLPS711x/EP721x-based"
233 Support for Cirrus Logic 711x/721x based boards.
238 select FOOTBRIDGE_ADDIN
240 Support for Intel's EBSA285 companion chip.
247 This is an evaluation board for the StrongARM processor available
248 from Digital. It has limited hardware on-board, including an
249 Ethernet interface, two PCMCIA sockets, two serial ports and a
259 This enables support for the Cirrus EP93xx series of CPUs.
261 config ARCH_FOOTBRIDGE
265 Support for systems based on the DC21285 companion chip
266 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
269 bool "Hilscher NetX based"
272 This enables support for systems based on the Hilscher NetX Soc
275 bool "Hynix HMS720x-based"
278 This enables support for systems based on the Hynix HMS720x
284 select GENERIC_CLOCKEVENTS
286 Support for Motorola's i.MX family of processors (MX1, MXL).
293 select ARCH_SUPPORTS_MSI
295 Support for Intel's IOP13XX (XScale) family of processors.
303 Support for Intel's 80219 and IOP32X (XScale) family of
312 Support for Intel's IOP33X (XScale) family of processors.
319 Support for Intel's IXP23xx (XScale) family of processors.
322 bool "IXP2400/2800-based"
326 Support for Intel's IXP2400/2800 (XScale) family of processors.
333 select GENERIC_CLOCKEVENTS
335 Support for Intel's IXP4XX (XScale) family of processors.
341 Say Y here if you intend to run this kernel on a LinkUp Systems
342 L7200 Software Development Board which uses an ARM720T processor.
343 Information on this board can be obtained at:
345 <http://www.linkupsys.com/>
347 If you have any questions or comments about the Linux kernel port
348 to this board, send e-mail to <sjhill@cotw.com>.
351 bool "Micrel/Kendin KS8695"
354 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
355 System-on-Chip devices.
358 bool "NetSilicon NS9xxx"
361 select GENERIC_CLOCKEVENTS
363 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
366 <http://www.digi.com/products/microprocessors/index.jsp>
369 bool "Freescale MXC/iMX-based"
372 Support for Freescale MXC/iMX-based family of processors
380 select GENERIC_CLOCKEVENTS
383 Support for the following Marvell Orion 5x series SoCs:
384 Orion-1 (5181), Orion-NAS (5182), Orion-2 (5281.)
387 bool "Philips Nexperia PNX4008 Mobile"
389 This enables support for Philips PNX4008 mobile platform.
392 bool "PXA2xx/PXA3xx-based"
398 select GENERIC_CLOCKEVENTS
401 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
408 select ARCH_MAY_HAVE_PC_FDC
412 On the Acorn Risc-PC, Linux can support the internal IDE disk and
413 CD-ROM interface, serial and parallel port, and the floppy drive.
418 select ARCH_DISCONTIGMEM_ENABLE
419 select ARCH_SPARSEMEM_ENABLE
420 select ARCH_SELECT_MEMORY_MODEL
424 select GENERIC_CLOCKEVENTS
428 Support for StrongARM 11x0 based boards.
431 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
434 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
435 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
436 the Samsung SMDK2410 development board (and derivatives).
444 Support for the StrongARM based Digital DNARD machine, also known
445 as "Shark" (<http://www.shark-linux.de/shark.html>).
450 Say Y here for systems based on one of the Sharp LH7A40X
451 System on a Chip processors. These CPUs include an ARM922T
452 core with a wide array of integrated devices for
453 hand-held and low-power applications.
458 select GENERIC_CLOCKEVENTS
461 Support for TI's DaVinci platform.
468 select GENERIC_CLOCKEVENTS
470 Support for TI's OMAP platform (OMAP1 and OMAP2).
473 bool "Qualcomm MSM7X00A"
475 select GENERIC_CLOCKEVENTS
477 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
478 apps processor of the MSM7X00A and depends on a shared memory
479 interface to the ARM9 modem processor which runs the baseband stack
480 and controls some vital subsystems (clock and power control, etc).
481 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
485 source "arch/arm/mach-clps711x/Kconfig"
487 source "arch/arm/mach-ep93xx/Kconfig"
489 source "arch/arm/mach-footbridge/Kconfig"
491 source "arch/arm/mach-integrator/Kconfig"
493 source "arch/arm/mach-iop32x/Kconfig"
495 source "arch/arm/mach-iop33x/Kconfig"
497 source "arch/arm/mach-iop13xx/Kconfig"
499 source "arch/arm/mach-ixp4xx/Kconfig"
501 source "arch/arm/mach-ixp2000/Kconfig"
503 source "arch/arm/mach-ixp23xx/Kconfig"
505 source "arch/arm/mach-pxa/Kconfig"
507 source "arch/arm/mach-sa1100/Kconfig"
509 source "arch/arm/plat-omap/Kconfig"
511 source "arch/arm/mach-omap1/Kconfig"
513 source "arch/arm/mach-omap2/Kconfig"
515 source "arch/arm/mach-orion5x/Kconfig"
517 source "arch/arm/plat-s3c24xx/Kconfig"
518 source "arch/arm/plat-s3c/Kconfig"
521 source "arch/arm/mach-s3c2400/Kconfig"
522 source "arch/arm/mach-s3c2410/Kconfig"
523 source "arch/arm/mach-s3c2412/Kconfig"
524 source "arch/arm/mach-s3c2440/Kconfig"
525 source "arch/arm/mach-s3c2442/Kconfig"
526 source "arch/arm/mach-s3c2443/Kconfig"
529 source "arch/arm/mach-lh7a40x/Kconfig"
531 source "arch/arm/mach-imx/Kconfig"
533 source "arch/arm/mach-h720x/Kconfig"
535 source "arch/arm/mach-versatile/Kconfig"
537 source "arch/arm/mach-aaec2000/Kconfig"
539 source "arch/arm/mach-realview/Kconfig"
541 source "arch/arm/mach-at91/Kconfig"
543 source "arch/arm/plat-mxc/Kconfig"
545 source "arch/arm/mach-netx/Kconfig"
547 source "arch/arm/mach-ns9xxx/Kconfig"
549 source "arch/arm/mach-davinci/Kconfig"
551 source "arch/arm/mach-ks8695/Kconfig"
553 source "arch/arm/mach-msm/Kconfig"
555 # Definitions to make life easier
565 source arch/arm/mm/Kconfig
568 bool "Enable iWMMXt support"
569 depends on CPU_XSCALE || CPU_XSC3
570 default y if PXA27x || PXA3xx
572 Enable support for iWMMXt context switching at run time if
573 running on a CPU that supports it.
575 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
578 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
582 source "arch/arm/Kconfig-nommu"
587 source "arch/arm/common/Kconfig"
589 config FORCE_MAX_ZONEORDER
602 Find out whether you have ISA slots on your motherboard. ISA is the
603 name of a bus system, i.e. the way the CPU talks to the other stuff
604 inside your box. Other bus systems are PCI, EISA, MicroChannel
605 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
606 newer boards don't support it. If you have ISA, say Y, otherwise N.
608 # Select ISA DMA controller support
613 # Select ISA DMA interface
618 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
620 Find out whether you have a PCI motherboard. PCI is the name of a
621 bus system, i.e. the way the CPU talks to the other stuff inside
622 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
623 VESA. If you have PCI, say Y, otherwise N.
628 # Select the host bridge type
629 config PCI_HOST_VIA82C505
631 depends on PCI && ARCH_SHARK
634 config PCI_HOST_ITE8152
636 depends on PCI && MACH_ARMCORE
640 source "drivers/pci/Kconfig"
642 source "drivers/pcmcia/Kconfig"
646 menu "Kernel Features"
648 source "kernel/time/Kconfig"
651 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
652 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
654 This enables support for systems with more than one CPU. If you have
655 a system with only one CPU, like most personal computers, say N. If
656 you have a system with more than one CPU, say Y.
658 If you say N here, the kernel will run on single and multiprocessor
659 machines, but will use only one CPU of a multiprocessor machine. If
660 you say Y here, the kernel will run on many, but not all, single
661 processor machines. On a single processor machine, the kernel will
662 run faster if you say N here.
664 See also <file:Documentation/i386/IO-APIC.txt>,
665 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
666 <http://www.linuxdoc.org/docs.html#howto>.
668 If you don't know what to do here, say N.
671 int "Maximum number of CPUs (2-32)"
677 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
678 depends on SMP && HOTPLUG && EXPERIMENTAL
680 Say Y here to experiment with turning CPUs off and on. CPUs
681 can be controlled through /sys/devices/system/cpu.
684 bool "Use local timer interrupts"
685 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
688 Enable support for local timers on SMP platforms, rather then the
689 legacy IPI broadcast method. Local timers allows the system
690 accounting to be spread across the timer interval, preventing a
691 "thundering herd" at every timer tick.
694 bool "Preemptible Kernel (EXPERIMENTAL)"
695 depends on EXPERIMENTAL
697 This option reduces the latency of the kernel when reacting to
698 real-time or interactive events by allowing a low priority process to
699 be preempted even if it is in kernel mode executing a system call.
700 This allows applications to run more reliably even when the system is
703 Say Y here if you are building a kernel for a desktop, embedded
704 or real-time system. Say N if you are unsure.
708 default 128 if ARCH_L7200
709 default 200 if ARCH_EBSA110 || ARCH_S3C2410
710 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
711 default AT91_TIMER_HZ if ARCH_AT91
715 bool "Use the ARM EABI to compile the kernel"
717 This option allows for the kernel to be compiled using the latest
718 ARM ABI (aka EABI). This is only useful if you are using a user
719 space environment that is also compiled with EABI.
721 Since there are major incompatibilities between the legacy ABI and
722 EABI, especially with regard to structure member alignment, this
723 option also changes the kernel syscall calling convention to
724 disambiguate both ABIs and allow for backward compatibility support
725 (selected with CONFIG_OABI_COMPAT).
727 To use this you need GCC version 4.0.0 or later.
730 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
731 depends on AEABI && EXPERIMENTAL
734 This option preserves the old syscall interface along with the
735 new (ARM EABI) one. It also provides a compatibility layer to
736 intercept syscalls that have structure arguments which layout
737 in memory differs between the legacy ABI and the new ARM EABI
738 (only for non "thumb" binaries). This option adds a tiny
739 overhead to all syscalls and produces a slightly larger kernel.
740 If you know you'll be using only pure EABI user space then you
741 can say N here. If this option is not selected and you attempt
742 to execute a legacy ABI binary then the result will be
743 UNPREDICTABLE (in fact it can be predicted that it won't work
744 at all). If in doubt say Y.
746 config ARCH_DISCONTIGMEM_ENABLE
748 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
750 Say Y to support efficient handling of discontiguous physical memory,
751 for architectures which are either NUMA (Non-Uniform Memory Access)
752 or have huge holes in the physical address space for other reasons.
753 See <file:Documentation/vm/numa> for more.
755 config ARCH_SPARSEMEM_ENABLE
758 config ARCH_SELECT_MEMORY_MODEL
763 default "4" if ARCH_LH7A40X
765 depends on NEED_MULTIPLE_NODES
770 bool "Timer and CPU usage LEDs"
771 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
772 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
773 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
774 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
775 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
776 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
777 ARCH_KS8695 || MACH_RD88F5182
779 If you say Y here, the LEDs on your machine will be used
780 to provide useful information about your current system status.
782 If you are compiling a kernel for a NetWinder or EBSA-285, you will
783 be able to select which LEDs are active using the options below. If
784 you are compiling a kernel for the EBSA-110 or the LART however, the
785 red LED will simply flash regularly to indicate that the system is
786 still functional. It is safe to say Y here if you have a CATS
787 system, but the driver will do nothing.
790 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
791 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
792 || MACH_OMAP_PERSEUS2
794 depends on !GENERIC_CLOCKEVENTS
795 default y if ARCH_EBSA110
797 If you say Y here, one of the system LEDs (the green one on the
798 NetWinder, the amber one on the EBSA285, or the red one on the LART)
799 will flash regularly to indicate that the system is still
800 operational. This is mainly useful to kernel hackers who are
801 debugging unstable kernels.
803 The LART uses the same LED for both Timer LED and CPU usage LED
804 functions. You may choose to use both, but the Timer LED function
805 will overrule the CPU usage LED.
808 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
810 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
811 || MACH_OMAP_PERSEUS2
814 If you say Y here, the red LED will be used to give a good real
815 time indication of CPU usage, by lighting whenever the idle task
816 is not currently executing.
818 The LART uses the same LED for both Timer LED and CPU usage LED
819 functions. You may choose to use both, but the Timer LED function
820 will overrule the CPU usage LED.
822 config ALIGNMENT_TRAP
824 depends on CPU_CP15_MMU
825 default y if !ARCH_EBSA110
827 ARM processors cannot fetch/store information which is not
828 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
829 address divisible by 4. On 32-bit ARM processors, these non-aligned
830 fetch/store instructions will be emulated in software if you say
831 here, which has a severe performance impact. This is necessary for
832 correct operation of some network protocols. With an IP-only
833 configuration it is safe to say N, otherwise say Y.
839 # Compressed boot loader in ROM. Yes, we really want to ask about
840 # TEXT and BSS so we preserve their values in the config files.
841 config ZBOOT_ROM_TEXT
842 hex "Compressed ROM boot loader base address"
845 The physical address at which the ROM-able zImage is to be
846 placed in the target. Platforms which normally make use of
847 ROM-able zImage formats normally set this to a suitable
848 value in their defconfig file.
850 If ZBOOT_ROM is not enabled, this has no effect.
853 hex "Compressed ROM boot loader BSS address"
856 The base address of an area of read/write memory in the target
857 for the ROM-able zImage which must be available while the
858 decompressor is running. It must be large enough to hold the
859 entire decompressed kernel plus an additional 128 KiB.
860 Platforms which normally make use of ROM-able zImage formats
861 normally set this to a suitable value in their defconfig file.
863 If ZBOOT_ROM is not enabled, this has no effect.
866 bool "Compressed boot loader in ROM/flash"
867 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
869 Say Y here if you intend to execute your compressed kernel image
870 (zImage) directly from ROM or flash. If unsure, say N.
873 string "Default kernel command string"
876 On some architectures (EBSA110 and CATS), there is currently no way
877 for the boot loader to pass arguments to the kernel. For these
878 architectures, you should supply some command-line options at build
879 time by entering them here. As a minimum, you should specify the
880 memory size and the root device (e.g., mem=64M root=/dev/nfs).
883 bool "Kernel Execute-In-Place from ROM"
884 depends on !ZBOOT_ROM
886 Execute-In-Place allows the kernel to run from non-volatile storage
887 directly addressable by the CPU, such as NOR flash. This saves RAM
888 space since the text section of the kernel is not loaded from flash
889 to RAM. Read-write sections, such as the data section and stack,
890 are still copied to RAM. The XIP kernel is not compressed since
891 it has to run directly from flash, so it will take more space to
892 store it. The flash address used to link the kernel object files,
893 and for storing it, is configuration dependent. Therefore, if you
894 say Y here, you must know the proper physical address where to
895 store the kernel image depending on your own flash memory usage.
897 Also note that the make target becomes "make xipImage" rather than
898 "make zImage" or "make Image". The final kernel binary to put in
899 ROM memory will be arch/arm/boot/xipImage.
904 hex "XIP Kernel Physical Location"
905 depends on XIP_KERNEL
908 This is the physical address in your flash memory the kernel will
909 be linked for and stored to. This address is dependent on your
913 bool "Kexec system call (EXPERIMENTAL)"
914 depends on EXPERIMENTAL
916 kexec is a system call that implements the ability to shutdown your
917 current kernel, and to start another kernel. It is like a reboot
918 but it is independent of the system firmware. And like a reboot
919 you can start any kernel with it, not just Linux.
921 It is an ongoing process to be certain the hardware in a machine
922 is properly shutdown, so do not be surprised if this code does not
923 initially work for you. It may help to enable device hotplugging
927 bool "Export atags in procfs"
931 Should the atags used to boot the kernel be exported in an "atags"
932 file in procfs. Useful with kexec.
936 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
938 menu "CPU Frequency scaling"
940 source "drivers/cpufreq/Kconfig"
942 config CPU_FREQ_SA1100
944 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
947 config CPU_FREQ_SA1110
949 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
952 config CPU_FREQ_INTEGRATOR
953 tristate "CPUfreq driver for ARM Integrator CPUs"
954 depends on ARCH_INTEGRATOR && CPU_FREQ
957 This enables the CPUfreq driver for ARM Integrator CPUs.
959 For details, take a look at <file:Documentation/cpu-freq>.
964 tristate "CPUfreq driver for i.MX CPUs"
965 depends on ARCH_IMX && CPU_FREQ
968 This enables the CPUfreq driver for i.MX CPUs.
974 depends on CPU_FREQ && ARCH_PXA && PXA25x
976 select CPU_FREQ_DEFAULT_GOV_USERSPACE
982 menu "Floating point emulation"
984 comment "At least one emulation must be selected"
987 bool "NWFPE math emulation"
988 depends on !AEABI || OABI_COMPAT
990 Say Y to include the NWFPE floating point emulator in the kernel.
991 This is necessary to run most binaries. Linux does not currently
992 support floating point hardware so you need to say Y here even if
993 your machine has an FPA or floating point co-processor podule.
995 You may say N here if you are going to load the Acorn FPEmulator
999 bool "Support extended precision"
1000 depends on FPE_NWFPE
1002 Say Y to include 80-bit support in the kernel floating-point
1003 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1004 Note that gcc does not generate 80-bit operations by default,
1005 so in most cases this option only enlarges the size of the
1006 floating point emulator without any good reason.
1008 You almost surely want to say N here.
1011 bool "FastFPE math emulation (EXPERIMENTAL)"
1012 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1014 Say Y here to include the FAST floating point emulator in the kernel.
1015 This is an experimental much faster emulator which now also has full
1016 precision for the mantissa. It does not support any exceptions.
1017 It is very simple, and approximately 3-6 times faster than NWFPE.
1019 It should be sufficient for most programs. It may be not suitable
1020 for scientific calculations, but you have to check this for yourself.
1021 If you do not feel you need a faster FP emulation you should better
1025 bool "VFP-format floating point maths"
1026 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1028 Say Y to include VFP support code in the kernel. This is needed
1029 if your hardware includes a VFP unit.
1031 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1032 release notes and additional status information.
1034 Say N if your target does not have VFP hardware.
1042 bool "Advanced SIMD (NEON) Extension support"
1043 depends on VFPv3 && CPU_V7
1045 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1050 menu "Userspace binary formats"
1052 source "fs/Kconfig.binfmt"
1055 tristate "RISC OS personality"
1058 Say Y here to include the kernel code necessary if you want to run
1059 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1060 experimental; if this sounds frightening, say N and sleep in peace.
1061 You can also say M here to compile this support as a module (which
1062 will be called arthur).
1066 menu "Power management options"
1068 source "kernel/power/Kconfig"
1070 config ARCH_SUSPEND_POSSIBLE
1075 source "net/Kconfig"
1077 menu "Device Drivers"
1079 source "drivers/base/Kconfig"
1081 source "drivers/connector/Kconfig"
1083 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1084 source "drivers/mtd/Kconfig"
1087 source "drivers/parport/Kconfig"
1089 source "drivers/pnp/Kconfig"
1091 source "drivers/block/Kconfig"
1093 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1095 source "drivers/misc/Kconfig"
1097 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"
1161 source "drivers/uio/Kconfig"
1167 source "arch/arm/Kconfig.debug"
1169 source "security/Kconfig"
1171 source "crypto/Kconfig"
1173 source "lib/Kconfig"