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)
15 <<<<<<< HEAD:arch/arm/Kconfig
17 select HAVE_KRETPROBES if (HAVE_KPROBES)
18 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/arm/Kconfig
20 The ARM series is a line of low-power-consumption RISC chip designs
21 licensed by ARM Ltd and targeted at embedded applications and
22 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
23 manufactured, but legacy ARM-based PC hardware remains popular in
24 Europe. There is an ARM Linux project with a web page at
25 <http://www.arm.linux.org.uk/>.
27 config SYS_SUPPORTS_APM_EMULATION
38 config GENERIC_CLOCKEVENTS
42 config GENERIC_CLOCKEVENTS_BROADCAST
44 depends on GENERIC_CLOCKEVENTS
45 default y if SMP && !LOCAL_TIMERS
58 The Extended Industry Standard Architecture (EISA) bus was
59 developed as an open alternative to the IBM MicroChannel bus.
61 The EISA bus provided some of the features of the IBM MicroChannel
62 bus while maintaining backward compatibility with cards made for
63 the older ISA bus. The EISA bus saw limited use between 1988 and
64 1995 when it was made obsolete by the PCI bus.
66 Say Y here if you are building a kernel for an EISA-based machine.
76 MicroChannel Architecture is found in some IBM PS/2 machines and
77 laptops. It is a bus system similar to PCI or ISA. See
78 <file:Documentation/mca.txt> (and especially the web page given
79 there) before attempting to build an MCA bus kernel.
81 config GENERIC_HARDIRQS
85 config STACKTRACE_SUPPORT
89 config LOCKDEP_SUPPORT
93 config TRACE_IRQFLAGS_SUPPORT
97 config HARDIRQS_SW_RESEND
101 config GENERIC_IRQ_PROBE
105 config GENERIC_LOCKBREAK
108 depends on SMP && PREEMPT
110 config RWSEM_GENERIC_SPINLOCK
114 config RWSEM_XCHGADD_ALGORITHM
117 config ARCH_HAS_ILOG2_U32
121 config ARCH_HAS_ILOG2_U64
125 config GENERIC_HWEIGHT
129 config GENERIC_CALIBRATE_DELAY
133 config ARCH_SUPPORTS_AOUT
136 config ARCH_MAY_HAVE_PC_FDC
143 config GENERIC_ISA_DMA
154 config OPROFILE_ARMV6
156 depends on CPU_V6 && !SMP
157 select OPROFILE_ARM11_CORE
159 config OPROFILE_MPCORE
161 depends on CPU_V6 && SMP
162 select OPROFILE_ARM11_CORE
164 config OPROFILE_ARM11_CORE
171 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
172 default DRAM_BASE if REMAP_VECTORS_TO_RAM
175 The base address of exception vectors.
177 source "init/Kconfig"
182 prompt "ARM system type"
183 default ARCH_VERSATILE
186 bool "Agilent AAEC-2000 based"
189 This enables support for systems based on the Agilent AAEC-2000
191 config ARCH_INTEGRATOR
192 bool "ARM Ltd. Integrator family"
196 Support for ARM's Integrator platform.
199 bool "ARM Ltd. RealView family"
203 select GENERIC_CLOCKEVENTS
205 This enables support for ARM Ltd RealView boards.
207 config ARCH_VERSATILE
208 bool "ARM Ltd. Versatile family"
213 select GENERIC_CLOCKEVENTS
215 This enables support for ARM Ltd Versatile board.
221 This enables support for systems based on the Atmel AT91RM9200,
222 AT91SAM9 and AT91CAP9 processors.
225 bool "Cirrus CL-PS7500FE"
231 Support for the Cirrus Logic PS7500FE system-on-a-chip.
234 bool "Cirrus Logic CLPS711x/EP721x-based"
236 Support for Cirrus Logic 711x/721x based boards.
241 select FOOTBRIDGE_ADDIN
244 Support for Intel's EBSA285 companion chip.
251 This is an evaluation board for the StrongARM processor available
252 from Digital. It has limited hardware on-board, including an
253 Ethernet interface, two PCMCIA sockets, two serial ports and a
262 This enables support for the Cirrus EP93xx series of CPUs.
264 config ARCH_FOOTBRIDGE
269 Support for systems based on the DC21285 companion chip
270 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
273 bool "Hilscher NetX based"
276 This enables support for systems based on the Hilscher NetX Soc
279 bool "Hynix HMS720x-based"
282 This enables support for systems based on the Hynix HMS720x
288 select GENERIC_CLOCKEVENTS
290 Support for Motorola's i.MX family of processors (MX1, MXL).
297 select ARCH_SUPPORTS_MSI
299 Support for Intel's IOP13XX (XScale) family of processors.
308 Support for Intel's 80219 and IOP32X (XScale) family of
318 Support for Intel's IOP33X (XScale) family of processors.
326 Support for Intel's IXP23xx (XScale) family of processors.
329 bool "IXP2400/2800-based"
333 Support for Intel's IXP2400/2800 (XScale) family of processors.
340 select GENERIC_CLOCKEVENTS
343 Support for Intel's IXP4XX (XScale) family of processors.
350 Say Y here if you intend to run this kernel on a LinkUp Systems
351 L7200 Software Development Board which uses an ARM720T processor.
352 Information on this board can be obtained at:
354 <http://www.linkupsys.com/>
356 If you have any questions or comments about the Linux kernel port
357 to this board, send e-mail to <sjhill@cotw.com>.
360 bool "Micrel/Kendin KS8695"
363 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
364 System-on-Chip devices.
367 bool "NetSilicon NS9xxx"
370 select GENERIC_CLOCKEVENTS
372 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
375 <http://www.digi.com/products/microprocessors/index.jsp>
378 bool "Freescale MXC/iMX-based"
381 Support for Freescale MXC/iMX-based family of processors
389 select GENERIC_CLOCKEVENTS
391 Support for Marvell Orion System on Chip family.
394 bool "Philips Nexperia PNX4008 Mobile"
396 This enables support for Philips PNX4008 mobile platform.
399 bool "PXA2xx/PXA3xx-based"
406 select GENERIC_CLOCKEVENTS
409 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
416 select ARCH_MAY_HAVE_PC_FDC
421 On the Acorn Risc-PC, Linux can support the internal IDE disk and
422 CD-ROM interface, serial and parallel port, and the floppy drive.
427 select ARCH_DISCONTIGMEM_ENABLE
433 Support for StrongARM 11x0 based boards.
436 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
440 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
441 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
442 the Samsung SMDK2410 development board (and derivatives).
451 Support for the StrongARM based Digital DNARD machine, also known
452 as "Shark" (<http://www.shark-linux.de/shark.html>).
458 Say Y here for systems based on one of the Sharp LH7A40X
459 System on a Chip processors. These CPUs include an ARM922T
460 core with a wide array of integrated devices for
461 hand-held and low-power applications.
466 select GENERIC_CLOCKEVENTS
469 Support for TI's DaVinci platform.
476 Support for TI's OMAP platform (OMAP1 and OMAP2).
479 bool "Qualcomm MSM7X00A"
481 select GENERIC_CLOCKEVENTS
483 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
484 apps processor of the MSM7X00A and depends on a shared memory
485 interface to the ARM9 modem processor which runs the baseband stack
486 and controls some vital subsystems (clock and power control, etc).
487 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
491 source "arch/arm/mach-clps711x/Kconfig"
493 source "arch/arm/mach-ep93xx/Kconfig"
495 source "arch/arm/mach-footbridge/Kconfig"
497 source "arch/arm/mach-integrator/Kconfig"
499 source "arch/arm/mach-iop32x/Kconfig"
501 source "arch/arm/mach-iop33x/Kconfig"
503 source "arch/arm/mach-iop13xx/Kconfig"
505 source "arch/arm/mach-ixp4xx/Kconfig"
507 source "arch/arm/mach-ixp2000/Kconfig"
509 source "arch/arm/mach-ixp23xx/Kconfig"
511 source "arch/arm/mach-pxa/Kconfig"
513 source "arch/arm/mach-sa1100/Kconfig"
515 source "arch/arm/plat-omap/Kconfig"
517 source "arch/arm/mach-omap1/Kconfig"
519 source "arch/arm/mach-omap2/Kconfig"
521 source "arch/arm/mach-orion/Kconfig"
523 source "arch/arm/plat-s3c24xx/Kconfig"
524 source "arch/arm/plat-s3c/Kconfig"
527 source "arch/arm/mach-s3c2400/Kconfig"
528 source "arch/arm/mach-s3c2410/Kconfig"
529 source "arch/arm/mach-s3c2412/Kconfig"
530 source "arch/arm/mach-s3c2440/Kconfig"
531 source "arch/arm/mach-s3c2442/Kconfig"
532 source "arch/arm/mach-s3c2443/Kconfig"
535 source "arch/arm/mach-lh7a40x/Kconfig"
537 source "arch/arm/mach-imx/Kconfig"
539 source "arch/arm/mach-h720x/Kconfig"
541 source "arch/arm/mach-versatile/Kconfig"
543 source "arch/arm/mach-aaec2000/Kconfig"
545 source "arch/arm/mach-realview/Kconfig"
547 source "arch/arm/mach-at91/Kconfig"
549 source "arch/arm/plat-mxc/Kconfig"
551 source "arch/arm/mach-netx/Kconfig"
553 source "arch/arm/mach-ns9xxx/Kconfig"
555 source "arch/arm/mach-davinci/Kconfig"
557 source "arch/arm/mach-ks8695/Kconfig"
559 source "arch/arm/mach-msm/Kconfig"
561 # Definitions to make life easier
568 source arch/arm/mm/Kconfig
571 bool "Enable iWMMXt support"
572 depends on CPU_XSCALE || CPU_XSC3
573 default y if PXA27x || PXA3xx
575 Enable support for iWMMXt context switching at run time if
576 running on a CPU that supports it.
578 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
581 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
585 source "arch/arm/Kconfig-nommu"
590 source "arch/arm/common/Kconfig"
592 config FORCE_MAX_ZONEORDER
605 Find out whether you have ISA slots on your motherboard. ISA is the
606 name of a bus system, i.e. the way the CPU talks to the other stuff
607 inside your box. Other bus systems are PCI, EISA, MicroChannel
608 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
609 newer boards don't support it. If you have ISA, say Y, otherwise N.
611 # Select ISA DMA controller support
616 # Select ISA DMA interface
621 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
623 Find out whether you have a PCI motherboard. PCI is the name of a
624 bus system, i.e. the way the CPU talks to the other stuff inside
625 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
626 VESA. If you have PCI, say Y, otherwise N.
631 # Select the host bridge type
632 config PCI_HOST_VIA82C505
634 depends on PCI && ARCH_SHARK
637 config PCI_HOST_ITE8152
639 depends on PCI && MACH_ARMCORE
643 source "drivers/pci/Kconfig"
645 source "drivers/pcmcia/Kconfig"
649 menu "Kernel Features"
651 source "kernel/time/Kconfig"
654 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
655 depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP
657 This enables support for systems with more than one CPU. If you have
658 a system with only one CPU, like most personal computers, say N. If
659 you have a system with more than one CPU, say Y.
661 If you say N here, the kernel will run on single and multiprocessor
662 machines, but will use only one CPU of a multiprocessor machine. If
663 you say Y here, the kernel will run on many, but not all, single
664 processor machines. On a single processor machine, the kernel will
665 run faster if you say N here.
667 See also <file:Documentation/i386/IO-APIC.txt>,
668 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
669 <http://www.linuxdoc.org/docs.html#howto>.
671 If you don't know what to do here, say N.
674 int "Maximum number of CPUs (2-32)"
680 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
681 depends on SMP && HOTPLUG && EXPERIMENTAL
683 Say Y here to experiment with turning CPUs off and on. CPUs
684 can be controlled through /sys/devices/system/cpu.
687 bool "Use local timer interrupts"
688 depends on SMP && REALVIEW_EB_ARM11MP
691 Enable support for local timers on SMP platforms, rather then the
692 legacy IPI broadcast method. Local timers allows the system
693 accounting to be spread across the timer interval, preventing a
694 "thundering herd" at every timer tick.
697 bool "Preemptible Kernel (EXPERIMENTAL)"
698 depends on EXPERIMENTAL
700 This option reduces the latency of the kernel when reacting to
701 real-time or interactive events by allowing a low priority process to
702 be preempted even if it is in kernel mode executing a system call.
703 This allows applications to run more reliably even when the system is
706 Say Y here if you are building a kernel for a desktop, embedded
707 or real-time system. Say N if you are unsure.
710 bool "Dynamic tick timer"
711 depends on !GENERIC_CLOCKEVENTS
713 Select this option if you want to disable continuous timer ticks
714 and have them programmed to occur as required. This option saves
715 power as the system can remain in idle state for longer.
717 By default dynamic tick is disabled during the boot, and can be
718 manually enabled with:
720 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
722 Alternatively, if you want dynamic tick automatically enabled
723 during boot, pass "dyntick=enable" via the kernel command string.
725 Please note that dynamic tick may affect the accuracy of
726 timekeeping on some platforms depending on the implementation.
727 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
728 to have accurate timekeeping with dynamic tick.
732 default 128 if ARCH_L7200
733 default 200 if ARCH_EBSA110 || ARCH_S3C2410
734 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
735 default AT91_TIMER_HZ if ARCH_AT91
739 bool "Use the ARM EABI to compile the kernel"
741 This option allows for the kernel to be compiled using the latest
742 ARM ABI (aka EABI). This is only useful if you are using a user
743 space environment that is also compiled with EABI.
745 Since there are major incompatibilities between the legacy ABI and
746 EABI, especially with regard to structure member alignment, this
747 option also changes the kernel syscall calling convention to
748 disambiguate both ABIs and allow for backward compatibility support
749 (selected with CONFIG_OABI_COMPAT).
751 To use this you need GCC version 4.0.0 or later.
754 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
755 depends on AEABI && EXPERIMENTAL
758 This option preserves the old syscall interface along with the
759 new (ARM EABI) one. It also provides a compatibility layer to
760 intercept syscalls that have structure arguments which layout
761 in memory differs between the legacy ABI and the new ARM EABI
762 (only for non "thumb" binaries). This option adds a tiny
763 overhead to all syscalls and produces a slightly larger kernel.
764 If you know you'll be using only pure EABI user space then you
765 can say N here. If this option is not selected and you attempt
766 to execute a legacy ABI binary then the result will be
767 UNPREDICTABLE (in fact it can be predicted that it won't work
768 at all). If in doubt say Y.
770 config ARCH_DISCONTIGMEM_ENABLE
772 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
774 Say Y to support efficient handling of discontiguous physical memory,
775 for architectures which are either NUMA (Non-Uniform Memory Access)
776 or have huge holes in the physical address space for other reasons.
777 See <file:Documentation/vm/numa> for more.
781 default "4" if ARCH_LH7A40X
783 depends on NEED_MULTIPLE_NODES
788 bool "Timer and CPU usage LEDs"
789 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
790 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
791 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
792 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
793 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
794 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
795 ARCH_KS8695 || MACH_RD88F5182
797 If you say Y here, the LEDs on your machine will be used
798 to provide useful information about your current system status.
800 If you are compiling a kernel for a NetWinder or EBSA-285, you will
801 be able to select which LEDs are active using the options below. If
802 you are compiling a kernel for the EBSA-110 or the LART however, the
803 red LED will simply flash regularly to indicate that the system is
804 still functional. It is safe to say Y here if you have a CATS
805 system, but the driver will do nothing.
808 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
809 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
810 || MACH_OMAP_PERSEUS2
812 depends on !GENERIC_CLOCKEVENTS
813 default y if ARCH_EBSA110
815 If you say Y here, one of the system LEDs (the green one on the
816 NetWinder, the amber one on the EBSA285, or the red one on the LART)
817 will flash regularly to indicate that the system is still
818 operational. This is mainly useful to kernel hackers who are
819 debugging unstable kernels.
821 The LART uses the same LED for both Timer LED and CPU usage LED
822 functions. You may choose to use both, but the Timer LED function
823 will overrule the CPU usage LED.
826 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
828 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
829 || MACH_OMAP_PERSEUS2
832 If you say Y here, the red LED will be used to give a good real
833 time indication of CPU usage, by lighting whenever the idle task
834 is not currently executing.
836 The LART uses the same LED for both Timer LED and CPU usage LED
837 functions. You may choose to use both, but the Timer LED function
838 will overrule the CPU usage LED.
840 config ALIGNMENT_TRAP
842 depends on CPU_CP15_MMU
843 default y if !ARCH_EBSA110
845 ARM processors cannot fetch/store information which is not
846 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
847 address divisible by 4. On 32-bit ARM processors, these non-aligned
848 fetch/store instructions will be emulated in software if you say
849 here, which has a severe performance impact. This is necessary for
850 correct operation of some network protocols. With an IP-only
851 configuration it is safe to say N, otherwise say Y.
857 # Compressed boot loader in ROM. Yes, we really want to ask about
858 # TEXT and BSS so we preserve their values in the config files.
859 config ZBOOT_ROM_TEXT
860 hex "Compressed ROM boot loader base address"
863 The physical address at which the ROM-able zImage is to be
864 placed in the target. Platforms which normally make use of
865 ROM-able zImage formats normally set this to a suitable
866 value in their defconfig file.
868 If ZBOOT_ROM is not enabled, this has no effect.
871 hex "Compressed ROM boot loader BSS address"
874 The base address of an area of read/write memory in the target
875 for the ROM-able zImage which must be available while the
876 decompressor is running. It must be large enough to hold the
877 entire decompressed kernel plus an additional 128 KiB.
878 Platforms which normally make use of ROM-able zImage formats
879 normally set this to a suitable value in their defconfig file.
881 If ZBOOT_ROM is not enabled, this has no effect.
884 bool "Compressed boot loader in ROM/flash"
885 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
887 Say Y here if you intend to execute your compressed kernel image
888 (zImage) directly from ROM or flash. If unsure, say N.
891 string "Default kernel command string"
894 On some architectures (EBSA110 and CATS), there is currently no way
895 for the boot loader to pass arguments to the kernel. For these
896 architectures, you should supply some command-line options at build
897 time by entering them here. As a minimum, you should specify the
898 memory size and the root device (e.g., mem=64M root=/dev/nfs).
901 bool "Kernel Execute-In-Place from ROM"
902 depends on !ZBOOT_ROM
904 Execute-In-Place allows the kernel to run from non-volatile storage
905 directly addressable by the CPU, such as NOR flash. This saves RAM
906 space since the text section of the kernel is not loaded from flash
907 to RAM. Read-write sections, such as the data section and stack,
908 are still copied to RAM. The XIP kernel is not compressed since
909 it has to run directly from flash, so it will take more space to
910 store it. The flash address used to link the kernel object files,
911 and for storing it, is configuration dependent. Therefore, if you
912 say Y here, you must know the proper physical address where to
913 store the kernel image depending on your own flash memory usage.
915 Also note that the make target becomes "make xipImage" rather than
916 "make zImage" or "make Image". The final kernel binary to put in
917 ROM memory will be arch/arm/boot/xipImage.
922 hex "XIP Kernel Physical Location"
923 depends on XIP_KERNEL
926 This is the physical address in your flash memory the kernel will
927 be linked for and stored to. This address is dependent on your
931 bool "Kexec system call (EXPERIMENTAL)"
932 depends on EXPERIMENTAL
934 kexec is a system call that implements the ability to shutdown your
935 current kernel, and to start another kernel. It is like a reboot
936 but it is independent of the system firmware. And like a reboot
937 you can start any kernel with it, not just Linux.
939 It is an ongoing process to be certain the hardware in a machine
940 is properly shutdown, so do not be surprised if this code does not
941 initially work for you. It may help to enable device hotplugging
945 bool "Export atags in procfs"
946 <<<<<<< HEAD:arch/arm/Kconfig
951 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:arch/arm/Kconfig
953 Should the atags used to boot the kernel be exported in an "atags"
954 file in procfs. Useful with kexec.
958 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
960 menu "CPU Frequency scaling"
962 source "drivers/cpufreq/Kconfig"
964 config CPU_FREQ_SA1100
966 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
969 config CPU_FREQ_SA1110
971 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
974 config CPU_FREQ_INTEGRATOR
975 tristate "CPUfreq driver for ARM Integrator CPUs"
976 depends on ARCH_INTEGRATOR && CPU_FREQ
979 This enables the CPUfreq driver for ARM Integrator CPUs.
981 For details, take a look at <file:Documentation/cpu-freq>.
986 tristate "CPUfreq driver for i.MX CPUs"
987 depends on ARCH_IMX && CPU_FREQ
990 This enables the CPUfreq driver for i.MX CPUs.
996 depends on CPU_FREQ && ARCH_PXA && PXA25x
998 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1004 menu "Floating point emulation"
1006 comment "At least one emulation must be selected"
1009 bool "NWFPE math emulation"
1010 depends on !AEABI || OABI_COMPAT
1012 Say Y to include the NWFPE floating point emulator in the kernel.
1013 This is necessary to run most binaries. Linux does not currently
1014 support floating point hardware so you need to say Y here even if
1015 your machine has an FPA or floating point co-processor podule.
1017 You may say N here if you are going to load the Acorn FPEmulator
1018 early in the bootup.
1021 bool "Support extended precision"
1022 depends on FPE_NWFPE
1024 Say Y to include 80-bit support in the kernel floating-point
1025 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1026 Note that gcc does not generate 80-bit operations by default,
1027 so in most cases this option only enlarges the size of the
1028 floating point emulator without any good reason.
1030 You almost surely want to say N here.
1033 bool "FastFPE math emulation (EXPERIMENTAL)"
1034 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1036 Say Y here to include the FAST floating point emulator in the kernel.
1037 This is an experimental much faster emulator which now also has full
1038 precision for the mantissa. It does not support any exceptions.
1039 It is very simple, and approximately 3-6 times faster than NWFPE.
1041 It should be sufficient for most programs. It may be not suitable
1042 for scientific calculations, but you have to check this for yourself.
1043 If you do not feel you need a faster FP emulation you should better
1047 bool "VFP-format floating point maths"
1048 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1050 Say Y to include VFP support code in the kernel. This is needed
1051 if your hardware includes a VFP unit.
1053 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1054 release notes and additional status information.
1056 Say N if your target does not have VFP hardware.
1064 bool "Advanced SIMD (NEON) Extension support"
1065 depends on VFPv3 && CPU_V7
1067 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1072 menu "Userspace binary formats"
1074 source "fs/Kconfig.binfmt"
1077 tristate "RISC OS personality"
1080 Say Y here to include the kernel code necessary if you want to run
1081 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1082 experimental; if this sounds frightening, say N and sleep in peace.
1083 You can also say M here to compile this support as a module (which
1084 will be called arthur).
1088 menu "Power management options"
1090 source "kernel/power/Kconfig"
1092 config ARCH_SUSPEND_POSSIBLE
1097 source "net/Kconfig"
1099 menu "Device Drivers"
1101 source "drivers/base/Kconfig"
1103 source "drivers/connector/Kconfig"
1105 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1106 source "drivers/mtd/Kconfig"
1109 source "drivers/parport/Kconfig"
1111 source "drivers/pnp/Kconfig"
1113 source "drivers/block/Kconfig"
1115 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1117 source "drivers/misc/Kconfig"
1119 source "drivers/ide/Kconfig"
1121 source "drivers/scsi/Kconfig"
1123 source "drivers/ata/Kconfig"
1125 source "drivers/md/Kconfig"
1127 source "drivers/message/fusion/Kconfig"
1129 source "drivers/ieee1394/Kconfig"
1131 source "drivers/message/i2o/Kconfig"
1133 source "drivers/net/Kconfig"
1135 source "drivers/isdn/Kconfig"
1137 # input before char - char/joystick depends on it. As does USB.
1139 source "drivers/input/Kconfig"
1141 source "drivers/char/Kconfig"
1143 source "drivers/i2c/Kconfig"
1145 source "drivers/spi/Kconfig"
1147 source "drivers/gpio/Kconfig"
1149 source "drivers/w1/Kconfig"
1151 source "drivers/power/Kconfig"
1153 source "drivers/hwmon/Kconfig"
1155 source "drivers/watchdog/Kconfig"
1157 source "drivers/ssb/Kconfig"
1159 #source "drivers/l3/Kconfig"
1161 source "drivers/mfd/Kconfig"
1163 source "drivers/media/Kconfig"
1165 source "drivers/video/Kconfig"
1167 source "sound/Kconfig"
1169 source "drivers/hid/Kconfig"
1171 source "drivers/usb/Kconfig"
1173 source "drivers/mmc/Kconfig"
1175 source "drivers/leds/Kconfig"
1177 source "drivers/rtc/Kconfig"
1179 source "drivers/dma/Kconfig"
1181 source "drivers/dca/Kconfig"
1187 source "arch/arm/Kconfig.debug"
1189 source "security/Kconfig"
1191 source "crypto/Kconfig"
1193 source "lib/Kconfig"