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
16 select HAVE_KPROBES if (!XIP_KERNEL)
17 select HAVE_KRETPROBES if (HAVE_KPROBES)
18 select HAVE_FTRACE if (!XIP_KERNEL)
19 select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
20 select HAVE_GENERIC_DMA_COHERENT
22 The ARM series is a line of low-power-consumption RISC chip designs
23 licensed by ARM Ltd and targeted at embedded applications and
24 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
25 manufactured, but legacy ARM-based PC hardware remains popular in
26 Europe. There is an ARM Linux project with a web page at
27 <http://www.arm.linux.org.uk/>.
32 config SYS_SUPPORTS_APM_EMULATION
43 config GENERIC_CLOCKEVENTS
47 config GENERIC_CLOCKEVENTS_BROADCAST
49 depends on GENERIC_CLOCKEVENTS
50 default y if SMP && !LOCAL_TIMERS
63 The Extended Industry Standard Architecture (EISA) bus was
64 developed as an open alternative to the IBM MicroChannel bus.
66 The EISA bus provided some of the features of the IBM MicroChannel
67 bus while maintaining backward compatibility with cards made for
68 the older ISA bus. The EISA bus saw limited use between 1988 and
69 1995 when it was made obsolete by the PCI bus.
71 Say Y here if you are building a kernel for an EISA-based machine.
81 MicroChannel Architecture is found in some IBM PS/2 machines and
82 laptops. It is a bus system similar to PCI or ISA. See
83 <file:Documentation/mca.txt> (and especially the web page given
84 there) before attempting to build an MCA bus kernel.
86 config GENERIC_HARDIRQS
90 config STACKTRACE_SUPPORT
94 config HAVE_LATENCYTOP_SUPPORT
99 config LOCKDEP_SUPPORT
103 config TRACE_IRQFLAGS_SUPPORT
107 config HARDIRQS_SW_RESEND
111 config GENERIC_IRQ_PROBE
115 config GENERIC_LOCKBREAK
118 depends on SMP && PREEMPT
120 config RWSEM_GENERIC_SPINLOCK
124 config RWSEM_XCHGADD_ALGORITHM
127 config ARCH_HAS_ILOG2_U32
131 config ARCH_HAS_ILOG2_U64
135 config GENERIC_HWEIGHT
139 config GENERIC_CALIBRATE_DELAY
143 config ARCH_SUPPORTS_AOUT
146 config ARCH_MAY_HAVE_PC_FDC
153 config GENERIC_ISA_DMA
162 config GENERIC_HARDIRQS_NO__DO_IRQ
168 config OPROFILE_ARMV6
170 depends on CPU_V6 && !SMP
171 select OPROFILE_ARM11_CORE
173 config OPROFILE_MPCORE
175 depends on CPU_V6 && SMP
176 select OPROFILE_ARM11_CORE
178 config OPROFILE_ARM11_CORE
185 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
186 default DRAM_BASE if REMAP_VECTORS_TO_RAM
189 The base address of exception vectors.
191 source "init/Kconfig"
196 prompt "ARM system type"
197 default ARCH_VERSATILE
200 bool "Agilent AAEC-2000 based"
204 This enables support for systems based on the Agilent AAEC-2000
206 config ARCH_INTEGRATOR
207 bool "ARM Ltd. Integrator family"
212 Support for ARM's Integrator platform.
215 bool "ARM Ltd. RealView family"
220 select GENERIC_CLOCKEVENTS
222 This enables support for ARM Ltd RealView boards.
224 config ARCH_VERSATILE
225 bool "ARM Ltd. Versatile family"
231 select GENERIC_CLOCKEVENTS
233 This enables support for ARM Ltd Versatile board.
241 This enables support for systems based on the Atmel AT91
242 range of processors. Examples are the AT91RM9200,
243 AT91SAM926[013], AT91SAM9G20, AT91SAM9RL and AT91CAP9
244 and ARCH_AT91X40 processors.
247 bool "Cirrus CL-PS7500FE"
252 Support for the Cirrus Logic PS7500FE system-on-a-chip.
255 bool "Cirrus Logic CLPS711x/EP721x-based"
257 Support for Cirrus Logic 711x/721x based boards.
264 This is an evaluation board for the StrongARM processor available
265 from Digital. It has limited hardware on-board, including an
266 Ethernet interface, two PCMCIA sockets, two serial ports and a
275 select ARCH_REQUIRE_GPIOLIB
277 This enables support for the Cirrus EP93xx series of CPUs.
279 config ARCH_FOOTBRIDGE
283 Support for systems based on the DC21285 companion chip
284 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
287 bool "Hilscher NetX based"
290 This enables support for systems based on the Hilscher NetX Soc
293 bool "Hynix HMS720x-based"
296 This enables support for systems based on the Hynix HMS720x
302 select GENERIC_CLOCKEVENTS
304 Support for Motorola's i.MX family of processors (MX1, MXL).
311 select ARCH_SUPPORTS_MSI
313 Support for Intel's IOP13XX (XScale) family of processors.
321 select ARCH_REQUIRE_GPIOLIB
323 Support for Intel's 80219 and IOP32X (XScale) family of
332 select ARCH_REQUIRE_GPIOLIB
334 Support for Intel's IOP33X (XScale) family of processors.
341 Support for Intel's IXP23xx (XScale) family of processors.
344 bool "IXP2400/2800-based"
348 Support for Intel's IXP2400/2800 (XScale) family of processors.
355 select GENERIC_CLOCKEVENTS
357 Support for Intel's IXP4XX (XScale) family of processors.
363 Say Y here if you intend to run this kernel on a LinkUp Systems
364 L7200 Software Development Board which uses an ARM720T processor.
365 Information on this board can be obtained at:
367 <http://www.linkupsys.com/>
369 If you have any questions or comments about the Linux kernel port
370 to this board, send e-mail to <sjhill@cotw.com>.
373 bool "Marvell Kirkwood"
376 select GENERIC_CLOCKEVENTS
379 Support for the following Marvell Kirkwood series SoCs:
380 88F6180, 88F6192 and 88F6281.
383 bool "Micrel/Kendin KS8695"
386 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
387 System-on-Chip devices.
390 bool "NetSilicon NS9xxx"
393 select GENERIC_CLOCKEVENTS
396 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
399 <http://www.digi.com/products/microprocessors/index.jsp>
402 bool "Marvell Loki (88RC8480)"
404 select GENERIC_CLOCKEVENTS
407 Support for the Marvell Loki (88RC8480) SoC.
410 bool "Marvell MV78xx0"
413 select GENERIC_CLOCKEVENTS
416 Support for the following Marvell MV78xx0 series SoCs:
420 bool "Freescale MXC/iMX-based"
422 select GENERIC_CLOCKEVENTS
425 select ARCH_REQUIRE_GPIOLIB
427 Support for Freescale MXC/iMX-based family of processors
435 select GENERIC_CLOCKEVENTS
438 Support for the following Marvell Orion 5x series SoCs:
439 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
443 bool "Philips Nexperia PNX4008 Mobile"
446 This enables support for Philips PNX4008 mobile platform.
449 bool "PXA2xx/PXA3xx-based"
454 select ARCH_REQUIRE_GPIOLIB
456 select GENERIC_CLOCKEVENTS
459 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
466 select ARCH_MAY_HAVE_PC_FDC
467 select HAVE_PATA_PLATFORM
471 On the Acorn Risc-PC, Linux can support the internal IDE disk and
472 CD-ROM interface, serial and parallel port, and the floppy drive.
477 select ARCH_DISCONTIGMEM_ENABLE
478 select ARCH_SPARSEMEM_ENABLE
479 select ARCH_SELECT_MEMORY_MODEL
483 select GENERIC_CLOCKEVENTS
486 select ARCH_REQUIRE_GPIOLIB
488 Support for StrongARM 11x0 based boards.
491 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
495 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
496 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
497 the Samsung SMDK2410 development board (and derivatives).
505 Support for the StrongARM based Digital DNARD machine, also known
506 as "Shark" (<http://www.shark-linux.de/shark.html>).
511 Say Y here for systems based on one of the Sharp LH7A40X
512 System on a Chip processors. These CPUs include an ARM922T
513 core with a wide array of integrated devices for
514 hand-held and low-power applications.
519 select GENERIC_CLOCKEVENTS
523 Support for TI's DaVinci platform.
529 select ARCH_REQUIRE_GPIOLIB
531 select GENERIC_CLOCKEVENTS
533 Support for TI's OMAP platform (OMAP1 and OMAP2).
536 bool "Qualcomm MSM7X00A"
538 select GENERIC_CLOCKEVENTS
540 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
541 apps processor of the MSM7X00A and depends on a shared memory
542 interface to the ARM9 modem processor which runs the baseband stack
543 and controls some vital subsystems (clock and power control, etc).
544 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
548 source "arch/arm/mach-clps711x/Kconfig"
550 source "arch/arm/mach-ep93xx/Kconfig"
552 source "arch/arm/mach-footbridge/Kconfig"
554 source "arch/arm/mach-integrator/Kconfig"
556 source "arch/arm/mach-iop32x/Kconfig"
558 source "arch/arm/mach-iop33x/Kconfig"
560 source "arch/arm/mach-iop13xx/Kconfig"
562 source "arch/arm/mach-ixp4xx/Kconfig"
564 source "arch/arm/mach-ixp2000/Kconfig"
566 source "arch/arm/mach-ixp23xx/Kconfig"
568 source "arch/arm/mach-loki/Kconfig"
570 source "arch/arm/mach-mv78xx0/Kconfig"
572 source "arch/arm/mach-pxa/Kconfig"
574 source "arch/arm/mach-sa1100/Kconfig"
576 source "arch/arm/plat-omap/Kconfig"
578 source "arch/arm/mach-omap1/Kconfig"
580 source "arch/arm/mach-omap2/Kconfig"
582 source "arch/arm/mach-orion5x/Kconfig"
584 source "arch/arm/mach-kirkwood/Kconfig"
586 source "arch/arm/plat-s3c24xx/Kconfig"
587 source "arch/arm/plat-s3c/Kconfig"
590 source "arch/arm/mach-s3c2400/Kconfig"
591 source "arch/arm/mach-s3c2410/Kconfig"
592 source "arch/arm/mach-s3c2412/Kconfig"
593 source "arch/arm/mach-s3c2440/Kconfig"
594 source "arch/arm/mach-s3c2442/Kconfig"
595 source "arch/arm/mach-s3c2443/Kconfig"
598 source "arch/arm/mach-lh7a40x/Kconfig"
600 source "arch/arm/mach-imx/Kconfig"
602 source "arch/arm/mach-h720x/Kconfig"
604 source "arch/arm/mach-versatile/Kconfig"
606 source "arch/arm/mach-aaec2000/Kconfig"
608 source "arch/arm/mach-realview/Kconfig"
610 source "arch/arm/mach-at91/Kconfig"
612 source "arch/arm/plat-mxc/Kconfig"
614 source "arch/arm/mach-netx/Kconfig"
616 source "arch/arm/mach-ns9xxx/Kconfig"
618 source "arch/arm/mach-davinci/Kconfig"
620 source "arch/arm/mach-ks8695/Kconfig"
622 source "arch/arm/mach-msm/Kconfig"
624 # Definitions to make life easier
634 source arch/arm/mm/Kconfig
637 bool "Enable iWMMXt support"
638 depends on CPU_XSCALE || CPU_XSC3
639 default y if PXA27x || PXA3xx
641 Enable support for iWMMXt context switching at run time if
642 running on a CPU that supports it.
644 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
647 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
651 source "arch/arm/Kconfig-nommu"
656 source "arch/arm/common/Kconfig"
658 config FORCE_MAX_ZONEORDER
671 Find out whether you have ISA slots on your motherboard. ISA is the
672 name of a bus system, i.e. the way the CPU talks to the other stuff
673 inside your box. Other bus systems are PCI, EISA, MicroChannel
674 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
675 newer boards don't support it. If you have ISA, say Y, otherwise N.
677 # Select ISA DMA controller support
682 # Select ISA DMA interface
687 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
689 Find out whether you have a PCI motherboard. PCI is the name of a
690 bus system, i.e. the way the CPU talks to the other stuff inside
691 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
692 VESA. If you have PCI, say Y, otherwise N.
697 # Select the host bridge type
698 config PCI_HOST_VIA82C505
700 depends on PCI && ARCH_SHARK
703 config PCI_HOST_ITE8152
705 depends on PCI && MACH_ARMCORE
709 source "drivers/pci/Kconfig"
711 source "drivers/pcmcia/Kconfig"
715 menu "Kernel Features"
717 source "kernel/time/Kconfig"
720 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
721 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
722 select USE_GENERIC_SMP_HELPERS
724 This enables support for systems with more than one CPU. If you have
725 a system with only one CPU, like most personal computers, say N. If
726 you have a system with more than one CPU, say Y.
728 If you say N here, the kernel will run on single and multiprocessor
729 machines, but will use only one CPU of a multiprocessor machine. If
730 you say Y here, the kernel will run on many, but not all, single
731 processor machines. On a single processor machine, the kernel will
732 run faster if you say N here.
734 See also <file:Documentation/i386/IO-APIC.txt>,
735 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
736 <http://www.linuxdoc.org/docs.html#howto>.
738 If you don't know what to do here, say N.
741 int "Maximum number of CPUs (2-32)"
747 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
748 depends on SMP && HOTPLUG && EXPERIMENTAL
750 Say Y here to experiment with turning CPUs off and on. CPUs
751 can be controlled through /sys/devices/system/cpu.
754 bool "Use local timer interrupts"
755 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
758 Enable support for local timers on SMP platforms, rather then the
759 legacy IPI broadcast method. Local timers allows the system
760 accounting to be spread across the timer interval, preventing a
761 "thundering herd" at every timer tick.
764 bool "Preemptible Kernel (EXPERIMENTAL)"
765 depends on EXPERIMENTAL
767 This option reduces the latency of the kernel when reacting to
768 real-time or interactive events by allowing a low priority process to
769 be preempted even if it is in kernel mode executing a system call.
770 This allows applications to run more reliably even when the system is
773 Say Y here if you are building a kernel for a desktop, embedded
774 or real-time system. Say N if you are unsure.
778 default 128 if ARCH_L7200
779 default 200 if ARCH_EBSA110 || ARCH_S3C2410
780 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
781 default AT91_TIMER_HZ if ARCH_AT91
785 bool "Use the ARM EABI to compile the kernel"
787 This option allows for the kernel to be compiled using the latest
788 ARM ABI (aka EABI). This is only useful if you are using a user
789 space environment that is also compiled with EABI.
791 Since there are major incompatibilities between the legacy ABI and
792 EABI, especially with regard to structure member alignment, this
793 option also changes the kernel syscall calling convention to
794 disambiguate both ABIs and allow for backward compatibility support
795 (selected with CONFIG_OABI_COMPAT).
797 To use this you need GCC version 4.0.0 or later.
800 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
801 depends on AEABI && EXPERIMENTAL
804 This option preserves the old syscall interface along with the
805 new (ARM EABI) one. It also provides a compatibility layer to
806 intercept syscalls that have structure arguments which layout
807 in memory differs between the legacy ABI and the new ARM EABI
808 (only for non "thumb" binaries). This option adds a tiny
809 overhead to all syscalls and produces a slightly larger kernel.
810 If you know you'll be using only pure EABI user space then you
811 can say N here. If this option is not selected and you attempt
812 to execute a legacy ABI binary then the result will be
813 UNPREDICTABLE (in fact it can be predicted that it won't work
814 at all). If in doubt say Y.
816 config ARCH_FLATMEM_HAS_HOLES
821 config ARCH_DISCONTIGMEM_ENABLE
823 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
825 Say Y to support efficient handling of discontiguous physical memory,
826 for architectures which are either NUMA (Non-Uniform Memory Access)
827 or have huge holes in the physical address space for other reasons.
828 See <file:Documentation/vm/numa> for more.
830 config ARCH_SPARSEMEM_ENABLE
833 config ARCH_SELECT_MEMORY_MODEL
838 default "4" if ARCH_LH7A40X
840 depends on NEED_MULTIPLE_NODES
845 bool "Timer and CPU usage LEDs"
846 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
847 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
848 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
849 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
850 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
851 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
852 ARCH_KS8695 || MACH_RD88F5182
854 If you say Y here, the LEDs on your machine will be used
855 to provide useful information about your current system status.
857 If you are compiling a kernel for a NetWinder or EBSA-285, you will
858 be able to select which LEDs are active using the options below. If
859 you are compiling a kernel for the EBSA-110 or the LART however, the
860 red LED will simply flash regularly to indicate that the system is
861 still functional. It is safe to say Y here if you have a CATS
862 system, but the driver will do nothing.
865 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
866 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
867 || MACH_OMAP_PERSEUS2
869 depends on !GENERIC_CLOCKEVENTS
870 default y if ARCH_EBSA110
872 If you say Y here, one of the system LEDs (the green one on the
873 NetWinder, the amber one on the EBSA285, or the red one on the LART)
874 will flash regularly to indicate that the system is still
875 operational. This is mainly useful to kernel hackers who are
876 debugging unstable kernels.
878 The LART uses the same LED for both Timer LED and CPU usage LED
879 functions. You may choose to use both, but the Timer LED function
880 will overrule the CPU usage LED.
883 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
885 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
886 || MACH_OMAP_PERSEUS2
889 If you say Y here, the red LED will be used to give a good real
890 time indication of CPU usage, by lighting whenever the idle task
891 is not currently executing.
893 The LART uses the same LED for both Timer LED and CPU usage LED
894 functions. You may choose to use both, but the Timer LED function
895 will overrule the CPU usage LED.
897 config ALIGNMENT_TRAP
899 depends on CPU_CP15_MMU
900 default y if !ARCH_EBSA110
902 ARM processors cannot fetch/store information which is not
903 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
904 address divisible by 4. On 32-bit ARM processors, these non-aligned
905 fetch/store instructions will be emulated in software if you say
906 here, which has a severe performance impact. This is necessary for
907 correct operation of some network protocols. With an IP-only
908 configuration it is safe to say N, otherwise say Y.
914 # Compressed boot loader in ROM. Yes, we really want to ask about
915 # TEXT and BSS so we preserve their values in the config files.
916 config ZBOOT_ROM_TEXT
917 hex "Compressed ROM boot loader base address"
920 The physical address at which the ROM-able zImage is to be
921 placed in the target. Platforms which normally make use of
922 ROM-able zImage formats normally set this to a suitable
923 value in their defconfig file.
925 If ZBOOT_ROM is not enabled, this has no effect.
928 hex "Compressed ROM boot loader BSS address"
931 The base address of an area of read/write memory in the target
932 for the ROM-able zImage which must be available while the
933 decompressor is running. It must be large enough to hold the
934 entire decompressed kernel plus an additional 128 KiB.
935 Platforms which normally make use of ROM-able zImage formats
936 normally set this to a suitable value in their defconfig file.
938 If ZBOOT_ROM is not enabled, this has no effect.
941 bool "Compressed boot loader in ROM/flash"
942 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
944 Say Y here if you intend to execute your compressed kernel image
945 (zImage) directly from ROM or flash. If unsure, say N.
948 string "Default kernel command string"
951 On some architectures (EBSA110 and CATS), there is currently no way
952 for the boot loader to pass arguments to the kernel. For these
953 architectures, you should supply some command-line options at build
954 time by entering them here. As a minimum, you should specify the
955 memory size and the root device (e.g., mem=64M root=/dev/nfs).
958 bool "Kernel Execute-In-Place from ROM"
959 depends on !ZBOOT_ROM
961 Execute-In-Place allows the kernel to run from non-volatile storage
962 directly addressable by the CPU, such as NOR flash. This saves RAM
963 space since the text section of the kernel is not loaded from flash
964 to RAM. Read-write sections, such as the data section and stack,
965 are still copied to RAM. The XIP kernel is not compressed since
966 it has to run directly from flash, so it will take more space to
967 store it. The flash address used to link the kernel object files,
968 and for storing it, is configuration dependent. Therefore, if you
969 say Y here, you must know the proper physical address where to
970 store the kernel image depending on your own flash memory usage.
972 Also note that the make target becomes "make xipImage" rather than
973 "make zImage" or "make Image". The final kernel binary to put in
974 ROM memory will be arch/arm/boot/xipImage.
979 hex "XIP Kernel Physical Location"
980 depends on XIP_KERNEL
983 This is the physical address in your flash memory the kernel will
984 be linked for and stored to. This address is dependent on your
988 bool "Kexec system call (EXPERIMENTAL)"
989 depends on EXPERIMENTAL
991 kexec is a system call that implements the ability to shutdown your
992 current kernel, and to start another kernel. It is like a reboot
993 but it is independent of the system firmware. And like a reboot
994 you can start any kernel with it, not just Linux.
996 It is an ongoing process to be certain the hardware in a machine
997 is properly shutdown, so do not be surprised if this code does not
998 initially work for you. It may help to enable device hotplugging
1002 bool "Export atags in procfs"
1006 Should the atags used to boot the kernel be exported in an "atags"
1007 file in procfs. Useful with kexec.
1011 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1013 menu "CPU Frequency scaling"
1015 source "drivers/cpufreq/Kconfig"
1017 config CPU_FREQ_SA1100
1019 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1022 config CPU_FREQ_SA1110
1024 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1027 config CPU_FREQ_INTEGRATOR
1028 tristate "CPUfreq driver for ARM Integrator CPUs"
1029 depends on ARCH_INTEGRATOR && CPU_FREQ
1032 This enables the CPUfreq driver for ARM Integrator CPUs.
1034 For details, take a look at <file:Documentation/cpu-freq>.
1039 tristate "CPUfreq driver for i.MX CPUs"
1040 depends on ARCH_IMX && CPU_FREQ
1043 This enables the CPUfreq driver for i.MX CPUs.
1049 depends on CPU_FREQ && ARCH_PXA && PXA25x
1051 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1057 menu "Floating point emulation"
1059 comment "At least one emulation must be selected"
1062 bool "NWFPE math emulation"
1063 depends on !AEABI || OABI_COMPAT
1065 Say Y to include the NWFPE floating point emulator in the kernel.
1066 This is necessary to run most binaries. Linux does not currently
1067 support floating point hardware so you need to say Y here even if
1068 your machine has an FPA or floating point co-processor podule.
1070 You may say N here if you are going to load the Acorn FPEmulator
1071 early in the bootup.
1074 bool "Support extended precision"
1075 depends on FPE_NWFPE
1077 Say Y to include 80-bit support in the kernel floating-point
1078 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1079 Note that gcc does not generate 80-bit operations by default,
1080 so in most cases this option only enlarges the size of the
1081 floating point emulator without any good reason.
1083 You almost surely want to say N here.
1086 bool "FastFPE math emulation (EXPERIMENTAL)"
1087 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1089 Say Y here to include the FAST floating point emulator in the kernel.
1090 This is an experimental much faster emulator which now also has full
1091 precision for the mantissa. It does not support any exceptions.
1092 It is very simple, and approximately 3-6 times faster than NWFPE.
1094 It should be sufficient for most programs. It may be not suitable
1095 for scientific calculations, but you have to check this for yourself.
1096 If you do not feel you need a faster FP emulation you should better
1100 bool "VFP-format floating point maths"
1101 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1103 Say Y to include VFP support code in the kernel. This is needed
1104 if your hardware includes a VFP unit.
1106 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1107 release notes and additional status information.
1109 Say N if your target does not have VFP hardware.
1117 bool "Advanced SIMD (NEON) Extension support"
1118 depends on VFPv3 && CPU_V7
1120 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1125 menu "Userspace binary formats"
1127 source "fs/Kconfig.binfmt"
1130 tristate "RISC OS personality"
1133 Say Y here to include the kernel code necessary if you want to run
1134 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1135 experimental; if this sounds frightening, say N and sleep in peace.
1136 You can also say M here to compile this support as a module (which
1137 will be called arthur).
1141 menu "Power management options"
1143 source "kernel/power/Kconfig"
1145 config ARCH_SUSPEND_POSSIBLE
1150 source "net/Kconfig"
1152 menu "Device Drivers"
1154 source "drivers/base/Kconfig"
1156 source "drivers/connector/Kconfig"
1158 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1159 source "drivers/mtd/Kconfig"
1162 source "drivers/parport/Kconfig"
1164 source "drivers/pnp/Kconfig"
1166 source "drivers/block/Kconfig"
1168 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1170 source "drivers/misc/Kconfig"
1172 source "drivers/ide/Kconfig"
1174 source "drivers/scsi/Kconfig"
1176 source "drivers/ata/Kconfig"
1178 source "drivers/md/Kconfig"
1180 source "drivers/message/fusion/Kconfig"
1182 source "drivers/ieee1394/Kconfig"
1184 source "drivers/message/i2o/Kconfig"
1186 source "drivers/net/Kconfig"
1188 source "drivers/isdn/Kconfig"
1190 # input before char - char/joystick depends on it. As does USB.
1192 source "drivers/input/Kconfig"
1194 source "drivers/char/Kconfig"
1196 source "drivers/i2c/Kconfig"
1198 source "drivers/spi/Kconfig"
1200 source "drivers/gpio/Kconfig"
1202 source "drivers/w1/Kconfig"
1204 source "drivers/power/Kconfig"
1206 source "drivers/hwmon/Kconfig"
1208 source "drivers/watchdog/Kconfig"
1210 source "drivers/ssb/Kconfig"
1212 #source "drivers/l3/Kconfig"
1214 source "drivers/mfd/Kconfig"
1216 source "drivers/media/Kconfig"
1218 source "drivers/video/Kconfig"
1220 source "sound/Kconfig"
1222 source "drivers/hid/Kconfig"
1224 source "drivers/usb/Kconfig"
1226 source "drivers/mmc/Kconfig"
1228 source "drivers/leds/Kconfig"
1230 source "drivers/rtc/Kconfig"
1232 source "drivers/dma/Kconfig"
1234 source "drivers/dca/Kconfig"
1236 source "drivers/regulator/Kconfig"
1238 source "drivers/uio/Kconfig"
1244 source "arch/arm/Kconfig.debug"
1246 source "security/Kconfig"
1248 source "crypto/Kconfig"
1250 source "lib/Kconfig"