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
280 select ARCH_REQUIRE_GPIOLIB
282 This enables support for the Cirrus EP93xx series of CPUs.
284 config ARCH_FOOTBRIDGE
288 Support for systems based on the DC21285 companion chip
289 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
292 bool "Hilscher NetX based"
295 This enables support for systems based on the Hilscher NetX Soc
298 bool "Hynix HMS720x-based"
301 This enables support for systems based on the Hynix HMS720x
307 select GENERIC_CLOCKEVENTS
309 Support for Motorola's i.MX family of processors (MX1, MXL).
316 select ARCH_SUPPORTS_MSI
319 Support for Intel's IOP13XX (XScale) family of processors.
327 select ARCH_REQUIRE_GPIOLIB
329 Support for Intel's 80219 and IOP32X (XScale) family of
338 select ARCH_REQUIRE_GPIOLIB
340 Support for Intel's IOP33X (XScale) family of processors.
347 Support for Intel's IXP23xx (XScale) family of processors.
350 bool "IXP2400/2800-based"
354 Support for Intel's IXP2400/2800 (XScale) family of processors.
361 select GENERIC_CLOCKEVENTS
362 select DMABOUNCE if PCI
364 Support for Intel's IXP4XX (XScale) family of processors.
370 Say Y here if you intend to run this kernel on a LinkUp Systems
371 L7200 Software Development Board which uses an ARM720T processor.
372 Information on this board can be obtained at:
374 <http://www.linkupsys.com/>
376 If you have any questions or comments about the Linux kernel port
377 to this board, send e-mail to <sjhill@cotw.com>.
380 bool "Marvell Kirkwood"
383 select GENERIC_CLOCKEVENTS
386 Support for the following Marvell Kirkwood series SoCs:
387 88F6180, 88F6192 and 88F6281.
390 bool "Micrel/Kendin KS8695"
393 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
394 System-on-Chip devices.
397 bool "NetSilicon NS9xxx"
400 select GENERIC_CLOCKEVENTS
403 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
406 <http://www.digi.com/products/microprocessors/index.jsp>
409 bool "Marvell Loki (88RC8480)"
411 select GENERIC_CLOCKEVENTS
414 Support for the Marvell Loki (88RC8480) SoC.
417 bool "Marvell MV78xx0"
420 select GENERIC_CLOCKEVENTS
423 Support for the following Marvell MV78xx0 series SoCs:
427 bool "Freescale MXC/iMX-based"
429 select GENERIC_CLOCKEVENTS
432 select ARCH_REQUIRE_GPIOLIB
434 Support for Freescale MXC/iMX-based family of processors
442 select GENERIC_CLOCKEVENTS
445 Support for the following Marvell Orion 5x series SoCs:
446 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
447 Orion-2 (5281), Orion-1-90 (6183).
450 bool "Philips Nexperia PNX4008 Mobile"
453 This enables support for Philips PNX4008 mobile platform.
456 bool "PXA2xx/PXA3xx-based"
462 select ARCH_REQUIRE_GPIOLIB
464 select GENERIC_CLOCKEVENTS
467 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
474 select ARCH_MAY_HAVE_PC_FDC
475 select HAVE_PATA_PLATFORM
478 select ARCH_SPARSEMEM_ENABLE
480 On the Acorn Risc-PC, Linux can support the internal IDE disk and
481 CD-ROM interface, serial and parallel port, and the floppy drive.
486 select ARCH_SPARSEMEM_ENABLE
490 select GENERIC_CLOCKEVENTS
493 select ARCH_REQUIRE_GPIOLIB
495 Support for StrongARM 11x0 based boards.
498 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
502 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
503 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
504 the Samsung SMDK2410 development board (and derivatives).
513 Support for the StrongARM based Digital DNARD machine, also known
514 as "Shark" (<http://www.shark-linux.de/shark.html>).
518 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
519 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
521 Say Y here for systems based on one of the Sharp LH7A40X
522 System on a Chip processors. These CPUs include an ARM922T
523 core with a wide array of integrated devices for
524 hand-held and low-power applications.
529 select GENERIC_CLOCKEVENTS
531 select ARCH_REQUIRE_GPIOLIB
535 Support for TI's DaVinci platform.
541 select ARCH_REQUIRE_GPIOLIB
543 select GENERIC_CLOCKEVENTS
545 Support for TI's OMAP platform (OMAP1 and OMAP2).
550 select GENERIC_CLOCKEVENTS
552 Support for Qualcomm MSM7K based systems. This runs on the ARM11
553 apps processor of the MSM7K and depends on a shared memory
554 interface to the ARM9 modem processor which runs the baseband stack
555 and controls some vital subsystems (clock and power control, etc).
559 source "arch/arm/mach-clps711x/Kconfig"
561 source "arch/arm/mach-ep93xx/Kconfig"
563 source "arch/arm/mach-footbridge/Kconfig"
565 source "arch/arm/mach-integrator/Kconfig"
567 source "arch/arm/mach-iop32x/Kconfig"
569 source "arch/arm/mach-iop33x/Kconfig"
571 source "arch/arm/mach-iop13xx/Kconfig"
573 source "arch/arm/mach-ixp4xx/Kconfig"
575 source "arch/arm/mach-ixp2000/Kconfig"
577 source "arch/arm/mach-ixp23xx/Kconfig"
579 source "arch/arm/mach-loki/Kconfig"
581 source "arch/arm/mach-mv78xx0/Kconfig"
583 source "arch/arm/mach-pxa/Kconfig"
585 source "arch/arm/mach-sa1100/Kconfig"
587 source "arch/arm/plat-omap/Kconfig"
589 source "arch/arm/mach-omap1/Kconfig"
591 source "arch/arm/mach-omap2/Kconfig"
593 source "arch/arm/mach-orion5x/Kconfig"
595 source "arch/arm/mach-kirkwood/Kconfig"
597 source "arch/arm/plat-s3c24xx/Kconfig"
598 source "arch/arm/plat-s3c/Kconfig"
601 source "arch/arm/mach-s3c2400/Kconfig"
602 source "arch/arm/mach-s3c2410/Kconfig"
603 source "arch/arm/mach-s3c2412/Kconfig"
604 source "arch/arm/mach-s3c2440/Kconfig"
605 source "arch/arm/mach-s3c2442/Kconfig"
606 source "arch/arm/mach-s3c2443/Kconfig"
609 source "arch/arm/mach-lh7a40x/Kconfig"
611 source "arch/arm/mach-imx/Kconfig"
613 source "arch/arm/mach-h720x/Kconfig"
615 source "arch/arm/mach-versatile/Kconfig"
617 source "arch/arm/mach-aaec2000/Kconfig"
619 source "arch/arm/mach-realview/Kconfig"
621 source "arch/arm/mach-at91/Kconfig"
623 source "arch/arm/plat-mxc/Kconfig"
625 source "arch/arm/mach-netx/Kconfig"
627 source "arch/arm/mach-ns9xxx/Kconfig"
629 source "arch/arm/mach-davinci/Kconfig"
631 source "arch/arm/mach-ks8695/Kconfig"
633 source "arch/arm/mach-msm/Kconfig"
635 # Definitions to make life easier
645 source arch/arm/mm/Kconfig
648 bool "Enable iWMMXt support"
649 depends on CPU_XSCALE || CPU_XSC3
650 default y if PXA27x || PXA3xx
652 Enable support for iWMMXt context switching at run time if
653 running on a CPU that supports it.
655 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
658 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
662 source "arch/arm/Kconfig-nommu"
667 source "arch/arm/common/Kconfig"
669 config FORCE_MAX_ZONEORDER
682 Find out whether you have ISA slots on your motherboard. ISA is the
683 name of a bus system, i.e. the way the CPU talks to the other stuff
684 inside your box. Other bus systems are PCI, EISA, MicroChannel
685 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
686 newer boards don't support it. If you have ISA, say Y, otherwise N.
688 # Select ISA DMA controller support
693 # Select ISA DMA interface
698 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
700 Find out whether you have a PCI motherboard. PCI is the name of a
701 bus system, i.e. the way the CPU talks to the other stuff inside
702 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
703 VESA. If you have PCI, say Y, otherwise N.
708 # Select the host bridge type
709 config PCI_HOST_VIA82C505
711 depends on PCI && ARCH_SHARK
714 config PCI_HOST_ITE8152
716 depends on PCI && MACH_ARMCORE
720 source "drivers/pci/Kconfig"
722 source "drivers/pcmcia/Kconfig"
726 menu "Kernel Features"
728 source "kernel/time/Kconfig"
731 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
732 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
733 select USE_GENERIC_SMP_HELPERS
735 This enables support for systems with more than one CPU. If you have
736 a system with only one CPU, like most personal computers, say N. If
737 you have a system with more than one CPU, say Y.
739 If you say N here, the kernel will run on single and multiprocessor
740 machines, but will use only one CPU of a multiprocessor machine. If
741 you say Y here, the kernel will run on many, but not all, single
742 processor machines. On a single processor machine, the kernel will
743 run faster if you say N here.
745 See also <file:Documentation/i386/IO-APIC.txt>,
746 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
747 <http://www.linuxdoc.org/docs.html#howto>.
749 If you don't know what to do here, say N.
752 prompt "Memory split"
755 Select the desired split between kernel and user memory.
757 If you are not absolutely sure what you are doing, leave this
761 bool "3G/1G user/kernel split"
763 bool "2G/2G user/kernel split"
765 bool "1G/3G user/kernel split"
770 default 0x40000000 if VMSPLIT_1G
771 default 0x80000000 if VMSPLIT_2G
775 int "Maximum number of CPUs (2-32)"
781 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
782 depends on SMP && HOTPLUG && EXPERIMENTAL
784 Say Y here to experiment with turning CPUs off and on. CPUs
785 can be controlled through /sys/devices/system/cpu.
788 bool "Use local timer interrupts"
789 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
792 Enable support for local timers on SMP platforms, rather then the
793 legacy IPI broadcast method. Local timers allows the system
794 accounting to be spread across the timer interval, preventing a
795 "thundering herd" at every timer tick.
798 bool "Preemptible Kernel (EXPERIMENTAL)"
799 depends on EXPERIMENTAL
801 This option reduces the latency of the kernel when reacting to
802 real-time or interactive events by allowing a low priority process to
803 be preempted even if it is in kernel mode executing a system call.
804 This allows applications to run more reliably even when the system is
807 Say Y here if you are building a kernel for a desktop, embedded
808 or real-time system. Say N if you are unsure.
812 default 128 if ARCH_L7200
813 default 200 if ARCH_EBSA110 || ARCH_S3C2410
814 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
815 default AT91_TIMER_HZ if ARCH_AT91
819 bool "Use the ARM EABI to compile the kernel"
821 This option allows for the kernel to be compiled using the latest
822 ARM ABI (aka EABI). This is only useful if you are using a user
823 space environment that is also compiled with EABI.
825 Since there are major incompatibilities between the legacy ABI and
826 EABI, especially with regard to structure member alignment, this
827 option also changes the kernel syscall calling convention to
828 disambiguate both ABIs and allow for backward compatibility support
829 (selected with CONFIG_OABI_COMPAT).
831 To use this you need GCC version 4.0.0 or later.
834 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
835 depends on AEABI && EXPERIMENTAL
838 This option preserves the old syscall interface along with the
839 new (ARM EABI) one. It also provides a compatibility layer to
840 intercept syscalls that have structure arguments which layout
841 in memory differs between the legacy ABI and the new ARM EABI
842 (only for non "thumb" binaries). This option adds a tiny
843 overhead to all syscalls and produces a slightly larger kernel.
844 If you know you'll be using only pure EABI user space then you
845 can say N here. If this option is not selected and you attempt
846 to execute a legacy ABI binary then the result will be
847 UNPREDICTABLE (in fact it can be predicted that it won't work
848 at all). If in doubt say Y.
850 config ARCH_FLATMEM_HAS_HOLES
855 # Discontigmem is deprecated
856 config ARCH_DISCONTIGMEM_ENABLE
859 config ARCH_SPARSEMEM_ENABLE
862 config ARCH_SPARSEMEM_DEFAULT
863 def_bool ARCH_SPARSEMEM_ENABLE
865 config ARCH_SELECT_MEMORY_MODEL
866 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
870 default "4" if ARCH_LH7A40X
872 depends on NEED_MULTIPLE_NODES
877 bool "Timer and CPU usage LEDs"
878 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
879 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
880 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
881 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
882 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
883 ARCH_AT91 || ARCH_DAVINCI || \
884 ARCH_KS8695 || MACH_RD88F5182
886 If you say Y here, the LEDs on your machine will be used
887 to provide useful information about your current system status.
889 If you are compiling a kernel for a NetWinder or EBSA-285, you will
890 be able to select which LEDs are active using the options below. If
891 you are compiling a kernel for the EBSA-110 or the LART however, the
892 red LED will simply flash regularly to indicate that the system is
893 still functional. It is safe to say Y here if you have a CATS
894 system, but the driver will do nothing.
897 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
898 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
899 || MACH_OMAP_PERSEUS2
901 depends on !GENERIC_CLOCKEVENTS
902 default y if ARCH_EBSA110
904 If you say Y here, one of the system LEDs (the green one on the
905 NetWinder, the amber one on the EBSA285, or the red one on the LART)
906 will flash regularly to indicate that the system is still
907 operational. This is mainly useful to kernel hackers who are
908 debugging unstable kernels.
910 The LART uses the same LED for both Timer LED and CPU usage LED
911 functions. You may choose to use both, but the Timer LED function
912 will overrule the CPU usage LED.
915 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
917 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
918 || MACH_OMAP_PERSEUS2
921 If you say Y here, the red LED will be used to give a good real
922 time indication of CPU usage, by lighting whenever the idle task
923 is not currently executing.
925 The LART uses the same LED for both Timer LED and CPU usage LED
926 functions. You may choose to use both, but the Timer LED function
927 will overrule the CPU usage LED.
929 config ALIGNMENT_TRAP
931 depends on CPU_CP15_MMU
932 default y if !ARCH_EBSA110
934 ARM processors cannot fetch/store information which is not
935 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
936 address divisible by 4. On 32-bit ARM processors, these non-aligned
937 fetch/store instructions will be emulated in software if you say
938 here, which has a severe performance impact. This is necessary for
939 correct operation of some network protocols. With an IP-only
940 configuration it is safe to say N, otherwise say Y.
946 # Compressed boot loader in ROM. Yes, we really want to ask about
947 # TEXT and BSS so we preserve their values in the config files.
948 config ZBOOT_ROM_TEXT
949 hex "Compressed ROM boot loader base address"
952 The physical address at which the ROM-able zImage is to be
953 placed in the target. Platforms which normally make use of
954 ROM-able zImage formats normally set this to a suitable
955 value in their defconfig file.
957 If ZBOOT_ROM is not enabled, this has no effect.
960 hex "Compressed ROM boot loader BSS address"
963 The base address of an area of read/write memory in the target
964 for the ROM-able zImage which must be available while the
965 decompressor is running. It must be large enough to hold the
966 entire decompressed kernel plus an additional 128 KiB.
967 Platforms which normally make use of ROM-able zImage formats
968 normally set this to a suitable value in their defconfig file.
970 If ZBOOT_ROM is not enabled, this has no effect.
973 bool "Compressed boot loader in ROM/flash"
974 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
976 Say Y here if you intend to execute your compressed kernel image
977 (zImage) directly from ROM or flash. If unsure, say N.
980 string "Default kernel command string"
983 On some architectures (EBSA110 and CATS), there is currently no way
984 for the boot loader to pass arguments to the kernel. For these
985 architectures, you should supply some command-line options at build
986 time by entering them here. As a minimum, you should specify the
987 memory size and the root device (e.g., mem=64M root=/dev/nfs).
990 bool "Kernel Execute-In-Place from ROM"
991 depends on !ZBOOT_ROM
993 Execute-In-Place allows the kernel to run from non-volatile storage
994 directly addressable by the CPU, such as NOR flash. This saves RAM
995 space since the text section of the kernel is not loaded from flash
996 to RAM. Read-write sections, such as the data section and stack,
997 are still copied to RAM. The XIP kernel is not compressed since
998 it has to run directly from flash, so it will take more space to
999 store it. The flash address used to link the kernel object files,
1000 and for storing it, is configuration dependent. Therefore, if you
1001 say Y here, you must know the proper physical address where to
1002 store the kernel image depending on your own flash memory usage.
1004 Also note that the make target becomes "make xipImage" rather than
1005 "make zImage" or "make Image". The final kernel binary to put in
1006 ROM memory will be arch/arm/boot/xipImage.
1010 config XIP_PHYS_ADDR
1011 hex "XIP Kernel Physical Location"
1012 depends on XIP_KERNEL
1013 default "0x00080000"
1015 This is the physical address in your flash memory the kernel will
1016 be linked for and stored to. This address is dependent on your
1020 bool "Kexec system call (EXPERIMENTAL)"
1021 depends on EXPERIMENTAL
1023 kexec is a system call that implements the ability to shutdown your
1024 current kernel, and to start another kernel. It is like a reboot
1025 but it is independent of the system firmware. And like a reboot
1026 you can start any kernel with it, not just Linux.
1028 It is an ongoing process to be certain the hardware in a machine
1029 is properly shutdown, so do not be surprised if this code does not
1030 initially work for you. It may help to enable device hotplugging
1034 bool "Export atags in procfs"
1038 Should the atags used to boot the kernel be exported in an "atags"
1039 file in procfs. Useful with kexec.
1043 menu "CPU Power Management"
1045 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1047 source "drivers/cpufreq/Kconfig"
1049 config CPU_FREQ_SA1100
1051 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1054 config CPU_FREQ_SA1110
1056 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1059 config CPU_FREQ_INTEGRATOR
1060 tristate "CPUfreq driver for ARM Integrator CPUs"
1061 depends on ARCH_INTEGRATOR && CPU_FREQ
1064 This enables the CPUfreq driver for ARM Integrator CPUs.
1066 For details, take a look at <file:Documentation/cpu-freq>.
1071 tristate "CPUfreq driver for i.MX CPUs"
1072 depends on ARCH_IMX && CPU_FREQ
1075 This enables the CPUfreq driver for i.MX CPUs.
1081 depends on CPU_FREQ && ARCH_PXA && PXA25x
1083 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1087 source "drivers/cpuidle/Kconfig"
1091 menu "Floating point emulation"
1093 comment "At least one emulation must be selected"
1096 bool "NWFPE math emulation"
1097 depends on !AEABI || OABI_COMPAT
1099 Say Y to include the NWFPE floating point emulator in the kernel.
1100 This is necessary to run most binaries. Linux does not currently
1101 support floating point hardware so you need to say Y here even if
1102 your machine has an FPA or floating point co-processor podule.
1104 You may say N here if you are going to load the Acorn FPEmulator
1105 early in the bootup.
1108 bool "Support extended precision"
1109 depends on FPE_NWFPE
1111 Say Y to include 80-bit support in the kernel floating-point
1112 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1113 Note that gcc does not generate 80-bit operations by default,
1114 so in most cases this option only enlarges the size of the
1115 floating point emulator without any good reason.
1117 You almost surely want to say N here.
1120 bool "FastFPE math emulation (EXPERIMENTAL)"
1121 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1123 Say Y here to include the FAST floating point emulator in the kernel.
1124 This is an experimental much faster emulator which now also has full
1125 precision for the mantissa. It does not support any exceptions.
1126 It is very simple, and approximately 3-6 times faster than NWFPE.
1128 It should be sufficient for most programs. It may be not suitable
1129 for scientific calculations, but you have to check this for yourself.
1130 If you do not feel you need a faster FP emulation you should better
1134 bool "VFP-format floating point maths"
1135 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1137 Say Y to include VFP support code in the kernel. This is needed
1138 if your hardware includes a VFP unit.
1140 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1141 release notes and additional status information.
1143 Say N if your target does not have VFP hardware.
1151 bool "Advanced SIMD (NEON) Extension support"
1152 depends on VFPv3 && CPU_V7
1154 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1159 menu "Userspace binary formats"
1161 source "fs/Kconfig.binfmt"
1164 tristate "RISC OS personality"
1167 Say Y here to include the kernel code necessary if you want to run
1168 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1169 experimental; if this sounds frightening, say N and sleep in peace.
1170 You can also say M here to compile this support as a module (which
1171 will be called arthur).
1175 menu "Power management options"
1177 source "kernel/power/Kconfig"
1179 config ARCH_SUSPEND_POSSIBLE
1184 source "net/Kconfig"
1186 menu "Device Drivers"
1188 source "drivers/base/Kconfig"
1190 source "drivers/connector/Kconfig"
1192 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1193 source "drivers/mtd/Kconfig"
1196 source "drivers/parport/Kconfig"
1198 source "drivers/pnp/Kconfig"
1200 source "drivers/block/Kconfig"
1202 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1204 source "drivers/misc/Kconfig"
1206 source "drivers/ide/Kconfig"
1208 source "drivers/scsi/Kconfig"
1210 source "drivers/ata/Kconfig"
1212 source "drivers/md/Kconfig"
1214 source "drivers/message/fusion/Kconfig"
1216 source "drivers/ieee1394/Kconfig"
1218 source "drivers/message/i2o/Kconfig"
1220 source "drivers/net/Kconfig"
1222 source "drivers/isdn/Kconfig"
1224 # input before char - char/joystick depends on it. As does USB.
1226 source "drivers/input/Kconfig"
1228 source "drivers/char/Kconfig"
1230 source "drivers/i2c/Kconfig"
1232 source "drivers/spi/Kconfig"
1234 source "drivers/gpio/Kconfig"
1236 source "drivers/w1/Kconfig"
1238 source "drivers/power/Kconfig"
1240 source "drivers/hwmon/Kconfig"
1242 source "drivers/thermal/Kconfig"
1244 source "drivers/watchdog/Kconfig"
1246 source "drivers/ssb/Kconfig"
1248 #source "drivers/l3/Kconfig"
1250 source "drivers/mfd/Kconfig"
1252 source "drivers/media/Kconfig"
1254 source "drivers/video/Kconfig"
1256 source "sound/Kconfig"
1258 source "drivers/hid/Kconfig"
1260 source "drivers/usb/Kconfig"
1262 source "drivers/uwb/Kconfig"
1264 source "drivers/mmc/Kconfig"
1266 source "drivers/memstick/Kconfig"
1268 source "drivers/accessibility/Kconfig"
1270 source "drivers/leds/Kconfig"
1272 source "drivers/rtc/Kconfig"
1274 source "drivers/dma/Kconfig"
1276 source "drivers/dca/Kconfig"
1278 source "drivers/auxdisplay/Kconfig"
1280 source "drivers/regulator/Kconfig"
1282 source "drivers/uio/Kconfig"
1288 source "arch/arm/Kconfig.debug"
1290 source "security/Kconfig"
1292 source "crypto/Kconfig"
1294 source "lib/Kconfig"