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"
215 Support for ARM's Integrator platform.
218 bool "ARM Ltd. RealView family"
223 select GENERIC_CLOCKEVENTS
225 This enables support for ARM Ltd RealView boards.
227 config ARCH_VERSATILE
228 bool "ARM Ltd. Versatile family"
234 select GENERIC_CLOCKEVENTS
236 This enables support for ARM Ltd Versatile board.
243 This enables support for systems based on the Atmel AT91RM9200,
244 AT91SAM9 and AT91CAP9 processors.
247 bool "Cirrus Logic CLPS711x/EP721x-based"
249 Support for Cirrus Logic 711x/721x based boards.
256 This is an evaluation board for the StrongARM processor available
257 from Digital. It has limited hardware on-board, including an
258 Ethernet interface, two PCMCIA sockets, two serial ports and a
267 select ARCH_REQUIRE_GPIOLIB
269 This enables support for the Cirrus EP93xx series of CPUs.
271 config ARCH_FOOTBRIDGE
275 Support for systems based on the DC21285 companion chip
276 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
279 bool "Hilscher NetX based"
282 This enables support for systems based on the Hilscher NetX Soc
285 bool "Hynix HMS720x-based"
288 This enables support for systems based on the Hynix HMS720x
294 select GENERIC_CLOCKEVENTS
296 Support for Motorola's i.MX family of processors (MX1, MXL).
303 select ARCH_SUPPORTS_MSI
306 Support for Intel's IOP13XX (XScale) family of processors.
314 select ARCH_REQUIRE_GPIOLIB
316 Support for Intel's 80219 and IOP32X (XScale) family of
325 select ARCH_REQUIRE_GPIOLIB
327 Support for Intel's IOP33X (XScale) family of processors.
334 Support for Intel's IXP23xx (XScale) family of processors.
337 bool "IXP2400/2800-based"
341 Support for Intel's IXP2400/2800 (XScale) family of processors.
348 select GENERIC_CLOCKEVENTS
349 select DMABOUNCE if PCI
351 Support for Intel's IXP4XX (XScale) family of processors.
357 Say Y here if you intend to run this kernel on a LinkUp Systems
358 L7200 Software Development Board which uses an ARM720T processor.
359 Information on this board can be obtained at:
361 <http://www.linkupsys.com/>
363 If you have any questions or comments about the Linux kernel port
364 to this board, send e-mail to <sjhill@cotw.com>.
367 bool "Marvell Kirkwood"
370 select GENERIC_CLOCKEVENTS
373 Support for the following Marvell Kirkwood series SoCs:
374 88F6180, 88F6192 and 88F6281.
377 bool "Micrel/Kendin KS8695"
380 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
381 System-on-Chip devices.
384 bool "NetSilicon NS9xxx"
387 select GENERIC_CLOCKEVENTS
390 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
393 <http://www.digi.com/products/microprocessors/index.jsp>
396 bool "Marvell Loki (88RC8480)"
398 select GENERIC_CLOCKEVENTS
401 Support for the Marvell Loki (88RC8480) SoC.
404 bool "Marvell MV78xx0"
407 select GENERIC_CLOCKEVENTS
410 Support for the following Marvell MV78xx0 series SoCs:
414 bool "Freescale MXC/iMX-based"
416 select GENERIC_CLOCKEVENTS
419 select ARCH_REQUIRE_GPIOLIB
421 Support for Freescale MXC/iMX-based family of processors
429 select GENERIC_CLOCKEVENTS
432 Support for the following Marvell Orion 5x series SoCs:
433 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
434 Orion-2 (5281), Orion-1-90 (6183).
437 bool "Philips Nexperia PNX4008 Mobile"
440 This enables support for Philips PNX4008 mobile platform.
443 bool "PXA2xx/PXA3xx-based"
448 select ARCH_REQUIRE_GPIOLIB
450 select GENERIC_CLOCKEVENTS
453 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
460 select ARCH_MAY_HAVE_PC_FDC
461 select HAVE_PATA_PLATFORM
464 select ARCH_SPARSEMEM_ENABLE
466 On the Acorn Risc-PC, Linux can support the internal IDE disk and
467 CD-ROM interface, serial and parallel port, and the floppy drive.
472 select ARCH_SPARSEMEM_ENABLE
476 select GENERIC_CLOCKEVENTS
479 select ARCH_REQUIRE_GPIOLIB
481 Support for StrongARM 11x0 based boards.
484 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
488 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
489 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
490 the Samsung SMDK2410 development board (and derivatives).
499 Support for the StrongARM based Digital DNARD machine, also known
500 as "Shark" (<http://www.shark-linux.de/shark.html>).
504 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
505 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
507 Say Y here for systems based on one of the Sharp LH7A40X
508 System on a Chip processors. These CPUs include an ARM922T
509 core with a wide array of integrated devices for
510 hand-held and low-power applications.
515 select GENERIC_CLOCKEVENTS
517 select ARCH_REQUIRE_GPIOLIB
521 Support for TI's DaVinci platform.
527 select ARCH_REQUIRE_GPIOLIB
529 select GENERIC_CLOCKEVENTS
531 Support for TI's OMAP platform (OMAP1 and OMAP2).
536 select GENERIC_CLOCKEVENTS
538 Support for Qualcomm MSM7K based systems. This runs on the ARM11
539 apps processor of the MSM7K and depends on a shared memory
540 interface to the ARM9 modem processor which runs the baseband stack
541 and controls some vital subsystems (clock and power control, etc).
545 source "arch/arm/mach-clps711x/Kconfig"
547 source "arch/arm/mach-ep93xx/Kconfig"
549 source "arch/arm/mach-footbridge/Kconfig"
551 source "arch/arm/mach-integrator/Kconfig"
553 source "arch/arm/mach-iop32x/Kconfig"
555 source "arch/arm/mach-iop33x/Kconfig"
557 source "arch/arm/mach-iop13xx/Kconfig"
559 source "arch/arm/mach-ixp4xx/Kconfig"
561 source "arch/arm/mach-ixp2000/Kconfig"
563 source "arch/arm/mach-ixp23xx/Kconfig"
565 source "arch/arm/mach-loki/Kconfig"
567 source "arch/arm/mach-mv78xx0/Kconfig"
569 source "arch/arm/mach-pxa/Kconfig"
571 source "arch/arm/mach-sa1100/Kconfig"
573 source "arch/arm/plat-omap/Kconfig"
575 source "arch/arm/mach-omap1/Kconfig"
577 source "arch/arm/mach-omap2/Kconfig"
579 source "arch/arm/mach-orion5x/Kconfig"
581 source "arch/arm/mach-kirkwood/Kconfig"
583 source "arch/arm/plat-s3c24xx/Kconfig"
584 source "arch/arm/plat-s3c/Kconfig"
587 source "arch/arm/mach-s3c2400/Kconfig"
588 source "arch/arm/mach-s3c2410/Kconfig"
589 source "arch/arm/mach-s3c2412/Kconfig"
590 source "arch/arm/mach-s3c2440/Kconfig"
591 source "arch/arm/mach-s3c2442/Kconfig"
592 source "arch/arm/mach-s3c2443/Kconfig"
595 source "arch/arm/mach-lh7a40x/Kconfig"
597 source "arch/arm/mach-imx/Kconfig"
599 source "arch/arm/mach-h720x/Kconfig"
601 source "arch/arm/mach-versatile/Kconfig"
603 source "arch/arm/mach-aaec2000/Kconfig"
605 source "arch/arm/mach-realview/Kconfig"
607 source "arch/arm/mach-at91/Kconfig"
609 source "arch/arm/plat-mxc/Kconfig"
611 source "arch/arm/mach-netx/Kconfig"
613 source "arch/arm/mach-ns9xxx/Kconfig"
615 source "arch/arm/mach-davinci/Kconfig"
617 source "arch/arm/mach-ks8695/Kconfig"
619 source "arch/arm/mach-msm/Kconfig"
621 # Definitions to make life easier
631 source arch/arm/mm/Kconfig
634 bool "Enable iWMMXt support"
635 depends on CPU_XSCALE || CPU_XSC3
636 default y if PXA27x || PXA3xx
638 Enable support for iWMMXt context switching at run time if
639 running on a CPU that supports it.
641 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
644 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
648 source "arch/arm/Kconfig-nommu"
653 source "arch/arm/common/Kconfig"
655 config FORCE_MAX_ZONEORDER
668 Find out whether you have ISA slots on your motherboard. ISA is the
669 name of a bus system, i.e. the way the CPU talks to the other stuff
670 inside your box. Other bus systems are PCI, EISA, MicroChannel
671 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
672 newer boards don't support it. If you have ISA, say Y, otherwise N.
674 # Select ISA DMA controller support
679 # Select ISA DMA interface
684 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
686 Find out whether you have a PCI motherboard. PCI is the name of a
687 bus system, i.e. the way the CPU talks to the other stuff inside
688 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
689 VESA. If you have PCI, say Y, otherwise N.
694 # Select the host bridge type
695 config PCI_HOST_VIA82C505
697 depends on PCI && ARCH_SHARK
700 config PCI_HOST_ITE8152
702 depends on PCI && MACH_ARMCORE
706 source "drivers/pci/Kconfig"
708 source "drivers/pcmcia/Kconfig"
712 menu "Kernel Features"
714 source "kernel/time/Kconfig"
717 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
718 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
719 select USE_GENERIC_SMP_HELPERS
721 This enables support for systems with more than one CPU. If you have
722 a system with only one CPU, like most personal computers, say N. If
723 you have a system with more than one CPU, say Y.
725 If you say N here, the kernel will run on single and multiprocessor
726 machines, but will use only one CPU of a multiprocessor machine. If
727 you say Y here, the kernel will run on many, but not all, single
728 processor machines. On a single processor machine, the kernel will
729 run faster if you say N here.
731 See also <file:Documentation/i386/IO-APIC.txt>,
732 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
733 <http://www.linuxdoc.org/docs.html#howto>.
735 If you don't know what to do here, say N.
738 prompt "Memory split"
741 Select the desired split between kernel and user memory.
743 If you are not absolutely sure what you are doing, leave this
747 bool "3G/1G user/kernel split"
749 bool "2G/2G user/kernel split"
751 bool "1G/3G user/kernel split"
756 default 0x40000000 if VMSPLIT_1G
757 default 0x80000000 if VMSPLIT_2G
761 int "Maximum number of CPUs (2-32)"
767 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
768 depends on SMP && HOTPLUG && EXPERIMENTAL
770 Say Y here to experiment with turning CPUs off and on. CPUs
771 can be controlled through /sys/devices/system/cpu.
774 bool "Use local timer interrupts"
775 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
778 Enable support for local timers on SMP platforms, rather then the
779 legacy IPI broadcast method. Local timers allows the system
780 accounting to be spread across the timer interval, preventing a
781 "thundering herd" at every timer tick.
784 bool "Preemptible Kernel (EXPERIMENTAL)"
785 depends on EXPERIMENTAL
787 This option reduces the latency of the kernel when reacting to
788 real-time or interactive events by allowing a low priority process to
789 be preempted even if it is in kernel mode executing a system call.
790 This allows applications to run more reliably even when the system is
793 Say Y here if you are building a kernel for a desktop, embedded
794 or real-time system. Say N if you are unsure.
798 default 128 if ARCH_L7200
799 default 200 if ARCH_EBSA110 || ARCH_S3C2410
800 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
801 default AT91_TIMER_HZ if ARCH_AT91
805 bool "Use the ARM EABI to compile the kernel"
807 This option allows for the kernel to be compiled using the latest
808 ARM ABI (aka EABI). This is only useful if you are using a user
809 space environment that is also compiled with EABI.
811 Since there are major incompatibilities between the legacy ABI and
812 EABI, especially with regard to structure member alignment, this
813 option also changes the kernel syscall calling convention to
814 disambiguate both ABIs and allow for backward compatibility support
815 (selected with CONFIG_OABI_COMPAT).
817 To use this you need GCC version 4.0.0 or later.
820 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
821 depends on AEABI && EXPERIMENTAL
824 This option preserves the old syscall interface along with the
825 new (ARM EABI) one. It also provides a compatibility layer to
826 intercept syscalls that have structure arguments which layout
827 in memory differs between the legacy ABI and the new ARM EABI
828 (only for non "thumb" binaries). This option adds a tiny
829 overhead to all syscalls and produces a slightly larger kernel.
830 If you know you'll be using only pure EABI user space then you
831 can say N here. If this option is not selected and you attempt
832 to execute a legacy ABI binary then the result will be
833 UNPREDICTABLE (in fact it can be predicted that it won't work
834 at all). If in doubt say Y.
836 config ARCH_FLATMEM_HAS_HOLES
841 # Discontigmem is deprecated
842 config ARCH_DISCONTIGMEM_ENABLE
845 config ARCH_SPARSEMEM_ENABLE
848 config ARCH_SPARSEMEM_DEFAULT
849 def_bool ARCH_SPARSEMEM_ENABLE
851 config ARCH_SELECT_MEMORY_MODEL
852 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
856 default "4" if ARCH_LH7A40X
858 depends on NEED_MULTIPLE_NODES
863 bool "Timer and CPU usage LEDs"
864 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
865 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
866 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
867 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
868 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
869 ARCH_AT91 || ARCH_DAVINCI || \
870 ARCH_KS8695 || MACH_RD88F5182
872 If you say Y here, the LEDs on your machine will be used
873 to provide useful information about your current system status.
875 If you are compiling a kernel for a NetWinder or EBSA-285, you will
876 be able to select which LEDs are active using the options below. If
877 you are compiling a kernel for the EBSA-110 or the LART however, the
878 red LED will simply flash regularly to indicate that the system is
879 still functional. It is safe to say Y here if you have a CATS
880 system, but the driver will do nothing.
883 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
884 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
885 || MACH_OMAP_PERSEUS2
887 depends on !GENERIC_CLOCKEVENTS
888 default y if ARCH_EBSA110
890 If you say Y here, one of the system LEDs (the green one on the
891 NetWinder, the amber one on the EBSA285, or the red one on the LART)
892 will flash regularly to indicate that the system is still
893 operational. This is mainly useful to kernel hackers who are
894 debugging unstable kernels.
896 The LART uses the same LED for both Timer LED and CPU usage LED
897 functions. You may choose to use both, but the Timer LED function
898 will overrule the CPU usage LED.
901 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
903 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
904 || MACH_OMAP_PERSEUS2
907 If you say Y here, the red LED will be used to give a good real
908 time indication of CPU usage, by lighting whenever the idle task
909 is not currently executing.
911 The LART uses the same LED for both Timer LED and CPU usage LED
912 functions. You may choose to use both, but the Timer LED function
913 will overrule the CPU usage LED.
915 config ALIGNMENT_TRAP
917 depends on CPU_CP15_MMU
918 default y if !ARCH_EBSA110
920 ARM processors cannot fetch/store information which is not
921 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
922 address divisible by 4. On 32-bit ARM processors, these non-aligned
923 fetch/store instructions will be emulated in software if you say
924 here, which has a severe performance impact. This is necessary for
925 correct operation of some network protocols. With an IP-only
926 configuration it is safe to say N, otherwise say Y.
932 # Compressed boot loader in ROM. Yes, we really want to ask about
933 # TEXT and BSS so we preserve their values in the config files.
934 config ZBOOT_ROM_TEXT
935 hex "Compressed ROM boot loader base address"
938 The physical address at which the ROM-able zImage is to be
939 placed in the target. Platforms which normally make use of
940 ROM-able zImage formats normally set this to a suitable
941 value in their defconfig file.
943 If ZBOOT_ROM is not enabled, this has no effect.
946 hex "Compressed ROM boot loader BSS address"
949 The base address of an area of read/write memory in the target
950 for the ROM-able zImage which must be available while the
951 decompressor is running. It must be large enough to hold the
952 entire decompressed kernel plus an additional 128 KiB.
953 Platforms which normally make use of ROM-able zImage formats
954 normally set this to a suitable value in their defconfig file.
956 If ZBOOT_ROM is not enabled, this has no effect.
959 bool "Compressed boot loader in ROM/flash"
960 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
962 Say Y here if you intend to execute your compressed kernel image
963 (zImage) directly from ROM or flash. If unsure, say N.
966 string "Default kernel command string"
969 On some architectures (EBSA110 and CATS), there is currently no way
970 for the boot loader to pass arguments to the kernel. For these
971 architectures, you should supply some command-line options at build
972 time by entering them here. As a minimum, you should specify the
973 memory size and the root device (e.g., mem=64M root=/dev/nfs).
976 bool "Kernel Execute-In-Place from ROM"
977 depends on !ZBOOT_ROM
979 Execute-In-Place allows the kernel to run from non-volatile storage
980 directly addressable by the CPU, such as NOR flash. This saves RAM
981 space since the text section of the kernel is not loaded from flash
982 to RAM. Read-write sections, such as the data section and stack,
983 are still copied to RAM. The XIP kernel is not compressed since
984 it has to run directly from flash, so it will take more space to
985 store it. The flash address used to link the kernel object files,
986 and for storing it, is configuration dependent. Therefore, if you
987 say Y here, you must know the proper physical address where to
988 store the kernel image depending on your own flash memory usage.
990 Also note that the make target becomes "make xipImage" rather than
991 "make zImage" or "make Image". The final kernel binary to put in
992 ROM memory will be arch/arm/boot/xipImage.
997 hex "XIP Kernel Physical Location"
998 depends on XIP_KERNEL
1001 This is the physical address in your flash memory the kernel will
1002 be linked for and stored to. This address is dependent on your
1006 bool "Kexec system call (EXPERIMENTAL)"
1007 depends on EXPERIMENTAL
1009 kexec is a system call that implements the ability to shutdown your
1010 current kernel, and to start another kernel. It is like a reboot
1011 but it is independent of the system firmware. And like a reboot
1012 you can start any kernel with it, not just Linux.
1014 It is an ongoing process to be certain the hardware in a machine
1015 is properly shutdown, so do not be surprised if this code does not
1016 initially work for you. It may help to enable device hotplugging
1020 bool "Export atags in procfs"
1024 Should the atags used to boot the kernel be exported in an "atags"
1025 file in procfs. Useful with kexec.
1029 menu "CPU Power Management"
1031 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1033 source "drivers/cpufreq/Kconfig"
1035 config CPU_FREQ_SA1100
1037 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1040 config CPU_FREQ_SA1110
1042 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1045 config CPU_FREQ_INTEGRATOR
1046 tristate "CPUfreq driver for ARM Integrator CPUs"
1047 depends on ARCH_INTEGRATOR && CPU_FREQ
1050 This enables the CPUfreq driver for ARM Integrator CPUs.
1052 For details, take a look at <file:Documentation/cpu-freq>.
1057 tristate "CPUfreq driver for i.MX CPUs"
1058 depends on ARCH_IMX && CPU_FREQ
1061 This enables the CPUfreq driver for i.MX CPUs.
1067 depends on CPU_FREQ && ARCH_PXA && PXA25x
1069 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1073 source "drivers/cpuidle/Kconfig"
1077 menu "Floating point emulation"
1079 comment "At least one emulation must be selected"
1082 bool "NWFPE math emulation"
1083 depends on !AEABI || OABI_COMPAT
1085 Say Y to include the NWFPE floating point emulator in the kernel.
1086 This is necessary to run most binaries. Linux does not currently
1087 support floating point hardware so you need to say Y here even if
1088 your machine has an FPA or floating point co-processor podule.
1090 You may say N here if you are going to load the Acorn FPEmulator
1091 early in the bootup.
1094 bool "Support extended precision"
1095 depends on FPE_NWFPE
1097 Say Y to include 80-bit support in the kernel floating-point
1098 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1099 Note that gcc does not generate 80-bit operations by default,
1100 so in most cases this option only enlarges the size of the
1101 floating point emulator without any good reason.
1103 You almost surely want to say N here.
1106 bool "FastFPE math emulation (EXPERIMENTAL)"
1107 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1109 Say Y here to include the FAST floating point emulator in the kernel.
1110 This is an experimental much faster emulator which now also has full
1111 precision for the mantissa. It does not support any exceptions.
1112 It is very simple, and approximately 3-6 times faster than NWFPE.
1114 It should be sufficient for most programs. It may be not suitable
1115 for scientific calculations, but you have to check this for yourself.
1116 If you do not feel you need a faster FP emulation you should better
1120 bool "VFP-format floating point maths"
1121 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1123 Say Y to include VFP support code in the kernel. This is needed
1124 if your hardware includes a VFP unit.
1126 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1127 release notes and additional status information.
1129 Say N if your target does not have VFP hardware.
1137 bool "Advanced SIMD (NEON) Extension support"
1138 depends on VFPv3 && CPU_V7
1140 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1145 menu "Userspace binary formats"
1147 source "fs/Kconfig.binfmt"
1150 tristate "RISC OS personality"
1153 Say Y here to include the kernel code necessary if you want to run
1154 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1155 experimental; if this sounds frightening, say N and sleep in peace.
1156 You can also say M here to compile this support as a module (which
1157 will be called arthur).
1161 menu "Power management options"
1163 source "kernel/power/Kconfig"
1165 config ARCH_SUSPEND_POSSIBLE
1170 source "net/Kconfig"
1172 menu "Device Drivers"
1174 source "drivers/base/Kconfig"
1176 source "drivers/connector/Kconfig"
1178 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1179 source "drivers/mtd/Kconfig"
1182 source "drivers/parport/Kconfig"
1184 source "drivers/pnp/Kconfig"
1186 source "drivers/block/Kconfig"
1188 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1190 source "drivers/misc/Kconfig"
1192 source "drivers/ide/Kconfig"
1194 source "drivers/scsi/Kconfig"
1196 source "drivers/ata/Kconfig"
1198 source "drivers/md/Kconfig"
1200 source "drivers/message/fusion/Kconfig"
1202 source "drivers/ieee1394/Kconfig"
1204 source "drivers/message/i2o/Kconfig"
1206 source "drivers/net/Kconfig"
1208 source "drivers/isdn/Kconfig"
1210 # input before char - char/joystick depends on it. As does USB.
1212 source "drivers/input/Kconfig"
1214 source "drivers/char/Kconfig"
1216 source "drivers/i2c/Kconfig"
1218 source "drivers/spi/Kconfig"
1220 source "drivers/gpio/Kconfig"
1222 source "drivers/w1/Kconfig"
1224 source "drivers/power/Kconfig"
1226 source "drivers/hwmon/Kconfig"
1228 source "drivers/thermal/Kconfig"
1230 source "drivers/watchdog/Kconfig"
1232 source "drivers/ssb/Kconfig"
1234 #source "drivers/l3/Kconfig"
1236 source "drivers/mfd/Kconfig"
1238 source "drivers/media/Kconfig"
1240 source "drivers/video/Kconfig"
1242 source "sound/Kconfig"
1244 source "drivers/hid/Kconfig"
1246 source "drivers/usb/Kconfig"
1248 source "drivers/uwb/Kconfig"
1250 source "drivers/mmc/Kconfig"
1252 source "drivers/memstick/Kconfig"
1254 source "drivers/accessibility/Kconfig"
1256 source "drivers/leds/Kconfig"
1258 source "drivers/rtc/Kconfig"
1260 source "drivers/dma/Kconfig"
1262 source "drivers/dca/Kconfig"
1264 source "drivers/auxdisplay/Kconfig"
1266 source "drivers/regulator/Kconfig"
1268 source "drivers/uio/Kconfig"
1274 source "arch/arm/Kconfig.debug"
1276 source "security/Kconfig"
1278 source "crypto/Kconfig"
1280 source "lib/Kconfig"