2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
14 select SYS_SUPPORTS_APM_EMULATION
17 select HAVE_KPROBES if (!XIP_KERNEL)
18 select HAVE_KRETPROBES if (HAVE_KPROBES)
19 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
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_MAY_HAVE_PC_FDC
149 config GENERIC_ISA_DMA
158 config GENERIC_HARDIRQS_NO__DO_IRQ
164 config OPROFILE_ARMV6
166 depends on CPU_V6 && !SMP
167 select OPROFILE_ARM11_CORE
169 config OPROFILE_MPCORE
171 depends on CPU_V6 && SMP
172 select OPROFILE_ARM11_CORE
174 config OPROFILE_ARM11_CORE
177 config OPROFILE_ARMV7
179 depends on CPU_V7 && !SMP
186 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
187 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 The base address of exception vectors.
192 source "init/Kconfig"
194 source "kernel/Kconfig.freezer"
199 prompt "ARM system type"
200 default ARCH_VERSATILE
203 bool "Agilent AAEC-2000 based"
207 This enables support for systems based on the Agilent AAEC-2000
209 config ARCH_INTEGRATOR
210 bool "ARM Ltd. Integrator family"
216 Support for ARM's Integrator platform.
219 bool "ARM Ltd. RealView family"
225 select GENERIC_CLOCKEVENTS
227 This enables support for ARM Ltd RealView boards.
229 config ARCH_VERSATILE
230 bool "ARM Ltd. Versatile family"
237 select GENERIC_CLOCKEVENTS
239 This enables support for ARM Ltd Versatile board.
246 This enables support for systems based on the Atmel AT91RM9200,
247 AT91SAM9 and AT91CAP9 processors.
250 bool "Cirrus CL-PS7500FE"
254 select ARCH_SPARSEMEM_ENABLE
256 Support for the Cirrus Logic PS7500FE system-on-a-chip.
259 bool "Cirrus Logic CLPS711x/EP721x-based"
261 Support for Cirrus Logic 711x/721x based boards.
268 This is an evaluation board for the StrongARM processor available
269 from Digital. It has limited hardware on-board, including an
270 Ethernet interface, two PCMCIA sockets, two serial ports and a
279 select ARCH_REQUIRE_GPIOLIB
281 This enables support for the Cirrus EP93xx series of CPUs.
283 config ARCH_FOOTBRIDGE
287 Support for systems based on the DC21285 companion chip
288 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
291 bool "Hilscher NetX based"
294 This enables support for systems based on the Hilscher NetX Soc
297 bool "Hynix HMS720x-based"
300 This enables support for systems based on the Hynix HMS720x
306 select GENERIC_CLOCKEVENTS
308 Support for Motorola's i.MX family of processors (MX1, MXL).
315 select ARCH_SUPPORTS_MSI
318 Support for Intel's IOP13XX (XScale) family of processors.
326 select ARCH_REQUIRE_GPIOLIB
328 Support for Intel's 80219 and IOP32X (XScale) family of
337 select ARCH_REQUIRE_GPIOLIB
339 Support for Intel's IOP33X (XScale) family of processors.
346 Support for Intel's IXP23xx (XScale) family of processors.
349 bool "IXP2400/2800-based"
353 Support for Intel's IXP2400/2800 (XScale) family of processors.
360 select GENERIC_CLOCKEVENTS
361 select DMABOUNCE if PCI
363 Support for Intel's IXP4XX (XScale) family of processors.
369 Say Y here if you intend to run this kernel on a LinkUp Systems
370 L7200 Software Development Board which uses an ARM720T processor.
371 Information on this board can be obtained at:
373 <http://www.linkupsys.com/>
375 If you have any questions or comments about the Linux kernel port
376 to this board, send e-mail to <sjhill@cotw.com>.
379 bool "Marvell Kirkwood"
382 select GENERIC_CLOCKEVENTS
385 Support for the following Marvell Kirkwood series SoCs:
386 88F6180, 88F6192 and 88F6281.
389 bool "Micrel/Kendin KS8695"
392 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
393 System-on-Chip devices.
396 bool "NetSilicon NS9xxx"
399 select GENERIC_CLOCKEVENTS
402 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
405 <http://www.digi.com/products/microprocessors/index.jsp>
408 bool "Marvell Loki (88RC8480)"
410 select GENERIC_CLOCKEVENTS
413 Support for the Marvell Loki (88RC8480) SoC.
416 bool "Marvell MV78xx0"
419 select GENERIC_CLOCKEVENTS
422 Support for the following Marvell MV78xx0 series SoCs:
426 bool "Freescale MXC/iMX-based"
428 select GENERIC_CLOCKEVENTS
431 select ARCH_REQUIRE_GPIOLIB
433 Support for Freescale MXC/iMX-based family of processors
441 select GENERIC_CLOCKEVENTS
444 Support for the following Marvell Orion 5x series SoCs:
445 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
446 Orion-2 (5281), Orion-1-90 (6183).
449 bool "Philips Nexperia PNX4008 Mobile"
452 This enables support for Philips PNX4008 mobile platform.
455 bool "PXA2xx/PXA3xx-based"
461 select ARCH_REQUIRE_GPIOLIB
463 select GENERIC_CLOCKEVENTS
466 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
473 select ARCH_MAY_HAVE_PC_FDC
474 select HAVE_PATA_PLATFORM
477 select ARCH_SPARSEMEM_ENABLE
479 On the Acorn Risc-PC, Linux can support the internal IDE disk and
480 CD-ROM interface, serial and parallel port, and the floppy drive.
485 select ARCH_SPARSEMEM_ENABLE
489 select GENERIC_CLOCKEVENTS
492 select ARCH_REQUIRE_GPIOLIB
494 Support for StrongARM 11x0 based boards.
497 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
501 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
502 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
503 the Samsung SMDK2410 development board (and derivatives).
512 Support for the StrongARM based Digital DNARD machine, also known
513 as "Shark" (<http://www.shark-linux.de/shark.html>).
517 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
518 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
520 Say Y here for systems based on one of the Sharp LH7A40X
521 System on a Chip processors. These CPUs include an ARM922T
522 core with a wide array of integrated devices for
523 hand-held and low-power applications.
528 select GENERIC_CLOCKEVENTS
530 select ARCH_REQUIRE_GPIOLIB
534 Support for TI's DaVinci platform.
540 select ARCH_REQUIRE_GPIOLIB
542 select GENERIC_CLOCKEVENTS
544 Support for TI's OMAP platform (OMAP1 and OMAP2).
549 select GENERIC_CLOCKEVENTS
551 Support for Qualcomm MSM7K based systems. This runs on the ARM11
552 apps processor of the MSM7K and depends on a shared memory
553 interface to the ARM9 modem processor which runs the baseband stack
554 and controls some vital subsystems (clock and power control, etc).
558 source "arch/arm/mach-clps711x/Kconfig"
560 source "arch/arm/mach-ep93xx/Kconfig"
562 source "arch/arm/mach-footbridge/Kconfig"
564 source "arch/arm/mach-integrator/Kconfig"
566 source "arch/arm/mach-iop32x/Kconfig"
568 source "arch/arm/mach-iop33x/Kconfig"
570 source "arch/arm/mach-iop13xx/Kconfig"
572 source "arch/arm/mach-ixp4xx/Kconfig"
574 source "arch/arm/mach-ixp2000/Kconfig"
576 source "arch/arm/mach-ixp23xx/Kconfig"
578 source "arch/arm/mach-loki/Kconfig"
580 source "arch/arm/mach-mv78xx0/Kconfig"
582 source "arch/arm/mach-pxa/Kconfig"
584 source "arch/arm/mach-sa1100/Kconfig"
586 source "arch/arm/plat-omap/Kconfig"
588 source "arch/arm/mach-omap1/Kconfig"
590 source "arch/arm/mach-omap2/Kconfig"
592 source "arch/arm/mach-orion5x/Kconfig"
594 source "arch/arm/mach-kirkwood/Kconfig"
596 source "arch/arm/plat-s3c24xx/Kconfig"
597 source "arch/arm/plat-s3c/Kconfig"
600 source "arch/arm/mach-s3c2400/Kconfig"
601 source "arch/arm/mach-s3c2410/Kconfig"
602 source "arch/arm/mach-s3c2412/Kconfig"
603 source "arch/arm/mach-s3c2440/Kconfig"
604 source "arch/arm/mach-s3c2442/Kconfig"
605 source "arch/arm/mach-s3c2443/Kconfig"
608 source "arch/arm/mach-lh7a40x/Kconfig"
610 source "arch/arm/mach-imx/Kconfig"
612 source "arch/arm/mach-h720x/Kconfig"
614 source "arch/arm/mach-versatile/Kconfig"
616 source "arch/arm/mach-aaec2000/Kconfig"
618 source "arch/arm/mach-realview/Kconfig"
620 source "arch/arm/mach-at91/Kconfig"
622 source "arch/arm/plat-mxc/Kconfig"
624 source "arch/arm/mach-netx/Kconfig"
626 source "arch/arm/mach-ns9xxx/Kconfig"
628 source "arch/arm/mach-davinci/Kconfig"
630 source "arch/arm/mach-ks8695/Kconfig"
632 source "arch/arm/mach-msm/Kconfig"
634 # Definitions to make life easier
644 source arch/arm/mm/Kconfig
647 bool "Enable iWMMXt support"
648 depends on CPU_XSCALE || CPU_XSC3
649 default y if PXA27x || PXA3xx
651 Enable support for iWMMXt context switching at run time if
652 running on a CPU that supports it.
654 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
657 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
661 source "arch/arm/Kconfig-nommu"
666 source "arch/arm/common/Kconfig"
668 config FORCE_MAX_ZONEORDER
681 Find out whether you have ISA slots on your motherboard. ISA is the
682 name of a bus system, i.e. the way the CPU talks to the other stuff
683 inside your box. Other bus systems are PCI, EISA, MicroChannel
684 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
685 newer boards don't support it. If you have ISA, say Y, otherwise N.
687 # Select ISA DMA controller support
692 # Select ISA DMA interface
697 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
699 Find out whether you have a PCI motherboard. PCI is the name of a
700 bus system, i.e. the way the CPU talks to the other stuff inside
701 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
702 VESA. If you have PCI, say Y, otherwise N.
707 # Select the host bridge type
708 config PCI_HOST_VIA82C505
710 depends on PCI && ARCH_SHARK
713 config PCI_HOST_ITE8152
715 depends on PCI && MACH_ARMCORE
719 source "drivers/pci/Kconfig"
721 source "drivers/pcmcia/Kconfig"
725 menu "Kernel Features"
727 source "kernel/time/Kconfig"
730 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
731 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
732 select USE_GENERIC_SMP_HELPERS
734 This enables support for systems with more than one CPU. If you have
735 a system with only one CPU, like most personal computers, say N. If
736 you have a system with more than one CPU, say Y.
738 If you say N here, the kernel will run on single and multiprocessor
739 machines, but will use only one CPU of a multiprocessor machine. If
740 you say Y here, the kernel will run on many, but not all, single
741 processor machines. On a single processor machine, the kernel will
742 run faster if you say N here.
744 See also <file:Documentation/i386/IO-APIC.txt>,
745 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
746 <http://www.linuxdoc.org/docs.html#howto>.
748 If you don't know what to do here, say N.
751 prompt "Memory split"
754 Select the desired split between kernel and user memory.
756 If you are not absolutely sure what you are doing, leave this
760 bool "3G/1G user/kernel split"
762 bool "2G/2G user/kernel split"
764 bool "1G/3G user/kernel split"
769 default 0x40000000 if VMSPLIT_1G
770 default 0x80000000 if VMSPLIT_2G
774 int "Maximum number of CPUs (2-32)"
780 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
781 depends on SMP && HOTPLUG && EXPERIMENTAL
783 Say Y here to experiment with turning CPUs off and on. CPUs
784 can be controlled through /sys/devices/system/cpu.
787 bool "Use local timer interrupts"
788 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
791 Enable support for local timers on SMP platforms, rather then the
792 legacy IPI broadcast method. Local timers allows the system
793 accounting to be spread across the timer interval, preventing a
794 "thundering herd" at every timer tick.
797 bool "Preemptible Kernel (EXPERIMENTAL)"
798 depends on EXPERIMENTAL
800 This option reduces the latency of the kernel when reacting to
801 real-time or interactive events by allowing a low priority process to
802 be preempted even if it is in kernel mode executing a system call.
803 This allows applications to run more reliably even when the system is
806 Say Y here if you are building a kernel for a desktop, embedded
807 or real-time system. Say N if you are unsure.
811 default 128 if ARCH_L7200
812 default 200 if ARCH_EBSA110 || ARCH_S3C2410
813 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
814 default AT91_TIMER_HZ if ARCH_AT91
818 bool "Use the ARM EABI to compile the kernel"
820 This option allows for the kernel to be compiled using the latest
821 ARM ABI (aka EABI). This is only useful if you are using a user
822 space environment that is also compiled with EABI.
824 Since there are major incompatibilities between the legacy ABI and
825 EABI, especially with regard to structure member alignment, this
826 option also changes the kernel syscall calling convention to
827 disambiguate both ABIs and allow for backward compatibility support
828 (selected with CONFIG_OABI_COMPAT).
830 To use this you need GCC version 4.0.0 or later.
833 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
834 depends on AEABI && EXPERIMENTAL
837 This option preserves the old syscall interface along with the
838 new (ARM EABI) one. It also provides a compatibility layer to
839 intercept syscalls that have structure arguments which layout
840 in memory differs between the legacy ABI and the new ARM EABI
841 (only for non "thumb" binaries). This option adds a tiny
842 overhead to all syscalls and produces a slightly larger kernel.
843 If you know you'll be using only pure EABI user space then you
844 can say N here. If this option is not selected and you attempt
845 to execute a legacy ABI binary then the result will be
846 UNPREDICTABLE (in fact it can be predicted that it won't work
847 at all). If in doubt say Y.
849 config ARCH_FLATMEM_HAS_HOLES
854 # Discontigmem is deprecated
855 config ARCH_DISCONTIGMEM_ENABLE
858 config ARCH_SPARSEMEM_ENABLE
861 config ARCH_SPARSEMEM_DEFAULT
862 def_bool ARCH_SPARSEMEM_ENABLE
864 config ARCH_SELECT_MEMORY_MODEL
865 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
869 default "4" if ARCH_LH7A40X
871 depends on NEED_MULTIPLE_NODES
876 bool "Timer and CPU usage LEDs"
877 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
878 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
879 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
880 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
881 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
882 ARCH_AT91 || ARCH_DAVINCI || \
883 ARCH_KS8695 || MACH_RD88F5182
885 If you say Y here, the LEDs on your machine will be used
886 to provide useful information about your current system status.
888 If you are compiling a kernel for a NetWinder or EBSA-285, you will
889 be able to select which LEDs are active using the options below. If
890 you are compiling a kernel for the EBSA-110 or the LART however, the
891 red LED will simply flash regularly to indicate that the system is
892 still functional. It is safe to say Y here if you have a CATS
893 system, but the driver will do nothing.
896 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
897 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
898 || MACH_OMAP_PERSEUS2
900 depends on !GENERIC_CLOCKEVENTS
901 default y if ARCH_EBSA110
903 If you say Y here, one of the system LEDs (the green one on the
904 NetWinder, the amber one on the EBSA285, or the red one on the LART)
905 will flash regularly to indicate that the system is still
906 operational. This is mainly useful to kernel hackers who are
907 debugging unstable kernels.
909 The LART uses the same LED for both Timer LED and CPU usage LED
910 functions. You may choose to use both, but the Timer LED function
911 will overrule the CPU usage LED.
914 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
916 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
917 || MACH_OMAP_PERSEUS2
920 If you say Y here, the red LED will be used to give a good real
921 time indication of CPU usage, by lighting whenever the idle task
922 is not currently executing.
924 The LART uses the same LED for both Timer LED and CPU usage LED
925 functions. You may choose to use both, but the Timer LED function
926 will overrule the CPU usage LED.
928 config ALIGNMENT_TRAP
930 depends on CPU_CP15_MMU
931 default y if !ARCH_EBSA110
933 ARM processors cannot fetch/store information which is not
934 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
935 address divisible by 4. On 32-bit ARM processors, these non-aligned
936 fetch/store instructions will be emulated in software if you say
937 here, which has a severe performance impact. This is necessary for
938 correct operation of some network protocols. With an IP-only
939 configuration it is safe to say N, otherwise say Y.
945 # Compressed boot loader in ROM. Yes, we really want to ask about
946 # TEXT and BSS so we preserve their values in the config files.
947 config ZBOOT_ROM_TEXT
948 hex "Compressed ROM boot loader base address"
951 The physical address at which the ROM-able zImage is to be
952 placed in the target. Platforms which normally make use of
953 ROM-able zImage formats normally set this to a suitable
954 value in their defconfig file.
956 If ZBOOT_ROM is not enabled, this has no effect.
959 hex "Compressed ROM boot loader BSS address"
962 The base address of an area of read/write memory in the target
963 for the ROM-able zImage which must be available while the
964 decompressor is running. It must be large enough to hold the
965 entire decompressed kernel plus an additional 128 KiB.
966 Platforms which normally make use of ROM-able zImage formats
967 normally set this to a suitable value in their defconfig file.
969 If ZBOOT_ROM is not enabled, this has no effect.
972 bool "Compressed boot loader in ROM/flash"
973 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
975 Say Y here if you intend to execute your compressed kernel image
976 (zImage) directly from ROM or flash. If unsure, say N.
979 string "Default kernel command string"
982 On some architectures (EBSA110 and CATS), there is currently no way
983 for the boot loader to pass arguments to the kernel. For these
984 architectures, you should supply some command-line options at build
985 time by entering them here. As a minimum, you should specify the
986 memory size and the root device (e.g., mem=64M root=/dev/nfs).
989 bool "Kernel Execute-In-Place from ROM"
990 depends on !ZBOOT_ROM
992 Execute-In-Place allows the kernel to run from non-volatile storage
993 directly addressable by the CPU, such as NOR flash. This saves RAM
994 space since the text section of the kernel is not loaded from flash
995 to RAM. Read-write sections, such as the data section and stack,
996 are still copied to RAM. The XIP kernel is not compressed since
997 it has to run directly from flash, so it will take more space to
998 store it. The flash address used to link the kernel object files,
999 and for storing it, is configuration dependent. Therefore, if you
1000 say Y here, you must know the proper physical address where to
1001 store the kernel image depending on your own flash memory usage.
1003 Also note that the make target becomes "make xipImage" rather than
1004 "make zImage" or "make Image". The final kernel binary to put in
1005 ROM memory will be arch/arm/boot/xipImage.
1009 config XIP_PHYS_ADDR
1010 hex "XIP Kernel Physical Location"
1011 depends on XIP_KERNEL
1012 default "0x00080000"
1014 This is the physical address in your flash memory the kernel will
1015 be linked for and stored to. This address is dependent on your
1019 bool "Kexec system call (EXPERIMENTAL)"
1020 depends on EXPERIMENTAL
1022 kexec is a system call that implements the ability to shutdown your
1023 current kernel, and to start another kernel. It is like a reboot
1024 but it is independent of the system firmware. And like a reboot
1025 you can start any kernel with it, not just Linux.
1027 It is an ongoing process to be certain the hardware in a machine
1028 is properly shutdown, so do not be surprised if this code does not
1029 initially work for you. It may help to enable device hotplugging
1033 bool "Export atags in procfs"
1037 Should the atags used to boot the kernel be exported in an "atags"
1038 file in procfs. Useful with kexec.
1042 menu "CPU Power Management"
1044 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1046 source "drivers/cpufreq/Kconfig"
1048 config CPU_FREQ_SA1100
1050 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1053 config CPU_FREQ_SA1110
1055 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1058 config CPU_FREQ_INTEGRATOR
1059 tristate "CPUfreq driver for ARM Integrator CPUs"
1060 depends on ARCH_INTEGRATOR && CPU_FREQ
1063 This enables the CPUfreq driver for ARM Integrator CPUs.
1065 For details, take a look at <file:Documentation/cpu-freq>.
1070 tristate "CPUfreq driver for i.MX CPUs"
1071 depends on ARCH_IMX && CPU_FREQ
1074 This enables the CPUfreq driver for i.MX CPUs.
1080 depends on CPU_FREQ && ARCH_PXA && PXA25x
1082 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1086 source "drivers/cpuidle/Kconfig"
1090 menu "Floating point emulation"
1092 comment "At least one emulation must be selected"
1095 bool "NWFPE math emulation"
1096 depends on !AEABI || OABI_COMPAT
1098 Say Y to include the NWFPE floating point emulator in the kernel.
1099 This is necessary to run most binaries. Linux does not currently
1100 support floating point hardware so you need to say Y here even if
1101 your machine has an FPA or floating point co-processor podule.
1103 You may say N here if you are going to load the Acorn FPEmulator
1104 early in the bootup.
1107 bool "Support extended precision"
1108 depends on FPE_NWFPE
1110 Say Y to include 80-bit support in the kernel floating-point
1111 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1112 Note that gcc does not generate 80-bit operations by default,
1113 so in most cases this option only enlarges the size of the
1114 floating point emulator without any good reason.
1116 You almost surely want to say N here.
1119 bool "FastFPE math emulation (EXPERIMENTAL)"
1120 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1122 Say Y here to include the FAST floating point emulator in the kernel.
1123 This is an experimental much faster emulator which now also has full
1124 precision for the mantissa. It does not support any exceptions.
1125 It is very simple, and approximately 3-6 times faster than NWFPE.
1127 It should be sufficient for most programs. It may be not suitable
1128 for scientific calculations, but you have to check this for yourself.
1129 If you do not feel you need a faster FP emulation you should better
1133 bool "VFP-format floating point maths"
1134 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1136 Say Y to include VFP support code in the kernel. This is needed
1137 if your hardware includes a VFP unit.
1139 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1140 release notes and additional status information.
1142 Say N if your target does not have VFP hardware.
1150 bool "Advanced SIMD (NEON) Extension support"
1151 depends on VFPv3 && CPU_V7
1153 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1158 menu "Userspace binary formats"
1160 source "fs/Kconfig.binfmt"
1163 tristate "RISC OS personality"
1166 Say Y here to include the kernel code necessary if you want to run
1167 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1168 experimental; if this sounds frightening, say N and sleep in peace.
1169 You can also say M here to compile this support as a module (which
1170 will be called arthur).
1174 menu "Power management options"
1176 source "kernel/power/Kconfig"
1178 config ARCH_SUSPEND_POSSIBLE
1183 source "net/Kconfig"
1185 menu "Device Drivers"
1187 source "drivers/base/Kconfig"
1189 source "drivers/connector/Kconfig"
1191 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1192 source "drivers/mtd/Kconfig"
1195 source "drivers/parport/Kconfig"
1197 source "drivers/pnp/Kconfig"
1199 source "drivers/block/Kconfig"
1201 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1203 source "drivers/misc/Kconfig"
1205 source "drivers/ide/Kconfig"
1207 source "drivers/scsi/Kconfig"
1209 source "drivers/ata/Kconfig"
1211 source "drivers/md/Kconfig"
1213 source "drivers/message/fusion/Kconfig"
1215 source "drivers/ieee1394/Kconfig"
1217 source "drivers/message/i2o/Kconfig"
1219 source "drivers/net/Kconfig"
1221 source "drivers/isdn/Kconfig"
1223 # input before char - char/joystick depends on it. As does USB.
1225 source "drivers/input/Kconfig"
1227 source "drivers/char/Kconfig"
1229 source "drivers/i2c/Kconfig"
1231 source "drivers/spi/Kconfig"
1233 source "drivers/gpio/Kconfig"
1235 source "drivers/w1/Kconfig"
1237 source "drivers/power/Kconfig"
1239 source "drivers/hwmon/Kconfig"
1241 source "drivers/thermal/Kconfig"
1243 source "drivers/watchdog/Kconfig"
1245 source "drivers/ssb/Kconfig"
1247 #source "drivers/l3/Kconfig"
1249 source "drivers/mfd/Kconfig"
1251 source "drivers/media/Kconfig"
1253 source "drivers/video/Kconfig"
1255 source "sound/Kconfig"
1257 source "drivers/hid/Kconfig"
1259 source "drivers/usb/Kconfig"
1261 source "drivers/uwb/Kconfig"
1263 source "drivers/mmc/Kconfig"
1265 source "drivers/memstick/Kconfig"
1267 source "drivers/accessibility/Kconfig"
1269 source "drivers/leds/Kconfig"
1271 source "drivers/rtc/Kconfig"
1273 source "drivers/dma/Kconfig"
1275 source "drivers/dca/Kconfig"
1277 source "drivers/auxdisplay/Kconfig"
1279 source "drivers/regulator/Kconfig"
1281 source "drivers/uio/Kconfig"
1287 source "arch/arm/Kconfig.debug"
1289 source "security/Kconfig"
1291 source "crypto/Kconfig"
1293 source "lib/Kconfig"