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
181 config OPROFILE_ARMV7
183 depends on CPU_V7 && !SMP
190 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
191 default DRAM_BASE if REMAP_VECTORS_TO_RAM
194 The base address of exception vectors.
196 source "init/Kconfig"
201 prompt "ARM system type"
202 default ARCH_VERSATILE
205 bool "Agilent AAEC-2000 based"
209 This enables support for systems based on the Agilent AAEC-2000
211 config ARCH_INTEGRATOR
212 bool "ARM Ltd. Integrator family"
217 Support for ARM's Integrator platform.
220 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"
236 select GENERIC_CLOCKEVENTS
238 This enables support for ARM Ltd Versatile board.
245 This enables support for systems based on the Atmel AT91RM9200,
246 AT91SAM9 and AT91CAP9 processors.
249 bool "Cirrus CL-PS7500FE"
254 Support for the Cirrus Logic PS7500FE system-on-a-chip.
257 bool "Cirrus Logic CLPS711x/EP721x-based"
259 Support for Cirrus Logic 711x/721x based boards.
266 This is an evaluation board for the StrongARM processor available
267 from Digital. It has limited hardware on-board, including an
268 Ethernet interface, two PCMCIA sockets, two serial ports and a
277 select ARCH_REQUIRE_GPIOLIB
279 This enables support for the Cirrus EP93xx series of CPUs.
281 config ARCH_FOOTBRIDGE
285 Support for systems based on the DC21285 companion chip
286 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
289 bool "Hilscher NetX based"
292 This enables support for systems based on the Hilscher NetX Soc
295 bool "Hynix HMS720x-based"
298 This enables support for systems based on the Hynix HMS720x
304 select GENERIC_CLOCKEVENTS
306 Support for Motorola's i.MX family of processors (MX1, MXL).
313 select ARCH_SUPPORTS_MSI
315 Support for Intel's IOP13XX (XScale) family of processors.
323 select ARCH_REQUIRE_GPIOLIB
325 Support for Intel's 80219 and IOP32X (XScale) family of
334 select ARCH_REQUIRE_GPIOLIB
336 Support for Intel's IOP33X (XScale) family of processors.
343 Support for Intel's IXP23xx (XScale) family of processors.
346 bool "IXP2400/2800-based"
350 Support for Intel's IXP2400/2800 (XScale) family of processors.
357 select GENERIC_CLOCKEVENTS
359 Support for Intel's IXP4XX (XScale) family of processors.
365 Say Y here if you intend to run this kernel on a LinkUp Systems
366 L7200 Software Development Board which uses an ARM720T processor.
367 Information on this board can be obtained at:
369 <http://www.linkupsys.com/>
371 If you have any questions or comments about the Linux kernel port
372 to this board, send e-mail to <sjhill@cotw.com>.
375 bool "Marvell Kirkwood"
378 select GENERIC_CLOCKEVENTS
381 Support for the following Marvell Kirkwood series SoCs:
382 88F6180, 88F6192 and 88F6281.
385 bool "Micrel/Kendin KS8695"
388 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
389 System-on-Chip devices.
392 bool "NetSilicon NS9xxx"
395 select GENERIC_CLOCKEVENTS
398 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
401 <http://www.digi.com/products/microprocessors/index.jsp>
404 bool "Marvell Loki (88RC8480)"
406 select GENERIC_CLOCKEVENTS
409 Support for the Marvell Loki (88RC8480) SoC.
412 bool "Marvell MV78xx0"
415 select GENERIC_CLOCKEVENTS
418 Support for the following Marvell MV78xx0 series SoCs:
422 bool "Freescale MXC/iMX-based"
424 select GENERIC_CLOCKEVENTS
427 select ARCH_REQUIRE_GPIOLIB
429 Support for Freescale MXC/iMX-based family of processors
437 select GENERIC_CLOCKEVENTS
440 Support for the following Marvell Orion 5x series SoCs:
441 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
445 bool "Philips Nexperia PNX4008 Mobile"
448 This enables support for Philips PNX4008 mobile platform.
451 bool "PXA2xx/PXA3xx-based"
456 select ARCH_REQUIRE_GPIOLIB
458 select GENERIC_CLOCKEVENTS
461 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
468 select ARCH_MAY_HAVE_PC_FDC
469 select HAVE_PATA_PLATFORM
473 On the Acorn Risc-PC, Linux can support the internal IDE disk and
474 CD-ROM interface, serial and parallel port, and the floppy drive.
479 select ARCH_DISCONTIGMEM_ENABLE
480 select ARCH_SPARSEMEM_ENABLE
481 select ARCH_SELECT_MEMORY_MODEL
485 select GENERIC_CLOCKEVENTS
488 select ARCH_REQUIRE_GPIOLIB
490 Support for StrongARM 11x0 based boards.
493 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
497 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
498 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
499 the Samsung SMDK2410 development board (and derivatives).
507 Support for the StrongARM based Digital DNARD machine, also known
508 as "Shark" (<http://www.shark-linux.de/shark.html>).
513 Say Y here for systems based on one of the Sharp LH7A40X
514 System on a Chip processors. These CPUs include an ARM922T
515 core with a wide array of integrated devices for
516 hand-held and low-power applications.
521 select GENERIC_CLOCKEVENTS
525 Support for TI's DaVinci platform.
531 select ARCH_REQUIRE_GPIOLIB
533 select GENERIC_CLOCKEVENTS
535 Support for TI's OMAP platform (OMAP1 and OMAP2).
538 bool "Qualcomm MSM7X00A"
540 select GENERIC_CLOCKEVENTS
542 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
543 apps processor of the MSM7X00A and depends on a shared memory
544 interface to the ARM9 modem processor which runs the baseband stack
545 and controls some vital subsystems (clock and power control, etc).
546 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
550 source "arch/arm/mach-clps711x/Kconfig"
552 source "arch/arm/mach-ep93xx/Kconfig"
554 source "arch/arm/mach-footbridge/Kconfig"
556 source "arch/arm/mach-integrator/Kconfig"
558 source "arch/arm/mach-iop32x/Kconfig"
560 source "arch/arm/mach-iop33x/Kconfig"
562 source "arch/arm/mach-iop13xx/Kconfig"
564 source "arch/arm/mach-ixp4xx/Kconfig"
566 source "arch/arm/mach-ixp2000/Kconfig"
568 source "arch/arm/mach-ixp23xx/Kconfig"
570 source "arch/arm/mach-loki/Kconfig"
572 source "arch/arm/mach-mv78xx0/Kconfig"
574 source "arch/arm/mach-pxa/Kconfig"
576 source "arch/arm/mach-sa1100/Kconfig"
578 source "arch/arm/plat-omap/Kconfig"
580 source "arch/arm/mach-omap1/Kconfig"
582 source "arch/arm/mach-omap2/Kconfig"
584 source "arch/arm/mach-orion5x/Kconfig"
586 source "arch/arm/mach-kirkwood/Kconfig"
588 source "arch/arm/plat-s3c24xx/Kconfig"
589 source "arch/arm/plat-s3c/Kconfig"
592 source "arch/arm/mach-s3c2400/Kconfig"
593 source "arch/arm/mach-s3c2410/Kconfig"
594 source "arch/arm/mach-s3c2412/Kconfig"
595 source "arch/arm/mach-s3c2440/Kconfig"
596 source "arch/arm/mach-s3c2442/Kconfig"
597 source "arch/arm/mach-s3c2443/Kconfig"
600 source "arch/arm/mach-lh7a40x/Kconfig"
602 source "arch/arm/mach-imx/Kconfig"
604 source "arch/arm/mach-h720x/Kconfig"
606 source "arch/arm/mach-versatile/Kconfig"
608 source "arch/arm/mach-aaec2000/Kconfig"
610 source "arch/arm/mach-realview/Kconfig"
612 source "arch/arm/mach-at91/Kconfig"
614 source "arch/arm/plat-mxc/Kconfig"
616 source "arch/arm/mach-netx/Kconfig"
618 source "arch/arm/mach-ns9xxx/Kconfig"
620 source "arch/arm/mach-davinci/Kconfig"
622 source "arch/arm/mach-ks8695/Kconfig"
624 source "arch/arm/mach-msm/Kconfig"
626 # Definitions to make life easier
636 source arch/arm/mm/Kconfig
639 bool "Enable iWMMXt support"
640 depends on CPU_XSCALE || CPU_XSC3
641 default y if PXA27x || PXA3xx
643 Enable support for iWMMXt context switching at run time if
644 running on a CPU that supports it.
646 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
649 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
653 source "arch/arm/Kconfig-nommu"
658 source "arch/arm/common/Kconfig"
660 config FORCE_MAX_ZONEORDER
673 Find out whether you have ISA slots on your motherboard. ISA is the
674 name of a bus system, i.e. the way the CPU talks to the other stuff
675 inside your box. Other bus systems are PCI, EISA, MicroChannel
676 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
677 newer boards don't support it. If you have ISA, say Y, otherwise N.
679 # Select ISA DMA controller support
684 # Select ISA DMA interface
689 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
691 Find out whether you have a PCI motherboard. PCI is the name of a
692 bus system, i.e. the way the CPU talks to the other stuff inside
693 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
694 VESA. If you have PCI, say Y, otherwise N.
699 # Select the host bridge type
700 config PCI_HOST_VIA82C505
702 depends on PCI && ARCH_SHARK
705 config PCI_HOST_ITE8152
707 depends on PCI && MACH_ARMCORE
711 source "drivers/pci/Kconfig"
713 source "drivers/pcmcia/Kconfig"
717 menu "Kernel Features"
719 source "kernel/time/Kconfig"
722 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
723 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
724 select USE_GENERIC_SMP_HELPERS
726 This enables support for systems with more than one CPU. If you have
727 a system with only one CPU, like most personal computers, say N. If
728 you have a system with more than one CPU, say Y.
730 If you say N here, the kernel will run on single and multiprocessor
731 machines, but will use only one CPU of a multiprocessor machine. If
732 you say Y here, the kernel will run on many, but not all, single
733 processor machines. On a single processor machine, the kernel will
734 run faster if you say N here.
736 See also <file:Documentation/i386/IO-APIC.txt>,
737 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
738 <http://www.linuxdoc.org/docs.html#howto>.
740 If you don't know what to do here, say N.
743 int "Maximum number of CPUs (2-32)"
749 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
750 depends on SMP && HOTPLUG && EXPERIMENTAL
752 Say Y here to experiment with turning CPUs off and on. CPUs
753 can be controlled through /sys/devices/system/cpu.
756 bool "Use local timer interrupts"
757 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
760 Enable support for local timers on SMP platforms, rather then the
761 legacy IPI broadcast method. Local timers allows the system
762 accounting to be spread across the timer interval, preventing a
763 "thundering herd" at every timer tick.
766 bool "Preemptible Kernel (EXPERIMENTAL)"
767 depends on EXPERIMENTAL
769 This option reduces the latency of the kernel when reacting to
770 real-time or interactive events by allowing a low priority process to
771 be preempted even if it is in kernel mode executing a system call.
772 This allows applications to run more reliably even when the system is
775 Say Y here if you are building a kernel for a desktop, embedded
776 or real-time system. Say N if you are unsure.
780 default 128 if ARCH_L7200
781 default 200 if ARCH_EBSA110 || ARCH_S3C2410
782 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
783 default AT91_TIMER_HZ if ARCH_AT91
787 bool "Use the ARM EABI to compile the kernel"
789 This option allows for the kernel to be compiled using the latest
790 ARM ABI (aka EABI). This is only useful if you are using a user
791 space environment that is also compiled with EABI.
793 Since there are major incompatibilities between the legacy ABI and
794 EABI, especially with regard to structure member alignment, this
795 option also changes the kernel syscall calling convention to
796 disambiguate both ABIs and allow for backward compatibility support
797 (selected with CONFIG_OABI_COMPAT).
799 To use this you need GCC version 4.0.0 or later.
802 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
803 depends on AEABI && EXPERIMENTAL
806 This option preserves the old syscall interface along with the
807 new (ARM EABI) one. It also provides a compatibility layer to
808 intercept syscalls that have structure arguments which layout
809 in memory differs between the legacy ABI and the new ARM EABI
810 (only for non "thumb" binaries). This option adds a tiny
811 overhead to all syscalls and produces a slightly larger kernel.
812 If you know you'll be using only pure EABI user space then you
813 can say N here. If this option is not selected and you attempt
814 to execute a legacy ABI binary then the result will be
815 UNPREDICTABLE (in fact it can be predicted that it won't work
816 at all). If in doubt say Y.
818 config ARCH_DISCONTIGMEM_ENABLE
820 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
822 Say Y to support efficient handling of discontiguous physical memory,
823 for architectures which are either NUMA (Non-Uniform Memory Access)
824 or have huge holes in the physical address space for other reasons.
825 See <file:Documentation/vm/numa> for more.
827 config ARCH_SPARSEMEM_ENABLE
830 config ARCH_SELECT_MEMORY_MODEL
835 default "4" if ARCH_LH7A40X
837 depends on NEED_MULTIPLE_NODES
842 bool "Timer and CPU usage LEDs"
843 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
844 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
845 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
846 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
847 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
848 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
849 ARCH_KS8695 || MACH_RD88F5182
851 If you say Y here, the LEDs on your machine will be used
852 to provide useful information about your current system status.
854 If you are compiling a kernel for a NetWinder or EBSA-285, you will
855 be able to select which LEDs are active using the options below. If
856 you are compiling a kernel for the EBSA-110 or the LART however, the
857 red LED will simply flash regularly to indicate that the system is
858 still functional. It is safe to say Y here if you have a CATS
859 system, but the driver will do nothing.
862 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
863 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
864 || MACH_OMAP_PERSEUS2
866 depends on !GENERIC_CLOCKEVENTS
867 default y if ARCH_EBSA110
869 If you say Y here, one of the system LEDs (the green one on the
870 NetWinder, the amber one on the EBSA285, or the red one on the LART)
871 will flash regularly to indicate that the system is still
872 operational. This is mainly useful to kernel hackers who are
873 debugging unstable kernels.
875 The LART uses the same LED for both Timer LED and CPU usage LED
876 functions. You may choose to use both, but the Timer LED function
877 will overrule the CPU usage LED.
880 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
882 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
883 || MACH_OMAP_PERSEUS2
886 If you say Y here, the red LED will be used to give a good real
887 time indication of CPU usage, by lighting whenever the idle task
888 is not currently executing.
890 The LART uses the same LED for both Timer LED and CPU usage LED
891 functions. You may choose to use both, but the Timer LED function
892 will overrule the CPU usage LED.
894 config ALIGNMENT_TRAP
896 depends on CPU_CP15_MMU
897 default y if !ARCH_EBSA110
899 ARM processors cannot fetch/store information which is not
900 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
901 address divisible by 4. On 32-bit ARM processors, these non-aligned
902 fetch/store instructions will be emulated in software if you say
903 here, which has a severe performance impact. This is necessary for
904 correct operation of some network protocols. With an IP-only
905 configuration it is safe to say N, otherwise say Y.
911 # Compressed boot loader in ROM. Yes, we really want to ask about
912 # TEXT and BSS so we preserve their values in the config files.
913 config ZBOOT_ROM_TEXT
914 hex "Compressed ROM boot loader base address"
917 The physical address at which the ROM-able zImage is to be
918 placed in the target. Platforms which normally make use of
919 ROM-able zImage formats normally set this to a suitable
920 value in their defconfig file.
922 If ZBOOT_ROM is not enabled, this has no effect.
925 hex "Compressed ROM boot loader BSS address"
928 The base address of an area of read/write memory in the target
929 for the ROM-able zImage which must be available while the
930 decompressor is running. It must be large enough to hold the
931 entire decompressed kernel plus an additional 128 KiB.
932 Platforms which normally make use of ROM-able zImage formats
933 normally set this to a suitable value in their defconfig file.
935 If ZBOOT_ROM is not enabled, this has no effect.
938 bool "Compressed boot loader in ROM/flash"
939 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
941 Say Y here if you intend to execute your compressed kernel image
942 (zImage) directly from ROM or flash. If unsure, say N.
945 string "Default kernel command string"
948 On some architectures (EBSA110 and CATS), there is currently no way
949 for the boot loader to pass arguments to the kernel. For these
950 architectures, you should supply some command-line options at build
951 time by entering them here. As a minimum, you should specify the
952 memory size and the root device (e.g., mem=64M root=/dev/nfs).
955 bool "Kernel Execute-In-Place from ROM"
956 depends on !ZBOOT_ROM
958 Execute-In-Place allows the kernel to run from non-volatile storage
959 directly addressable by the CPU, such as NOR flash. This saves RAM
960 space since the text section of the kernel is not loaded from flash
961 to RAM. Read-write sections, such as the data section and stack,
962 are still copied to RAM. The XIP kernel is not compressed since
963 it has to run directly from flash, so it will take more space to
964 store it. The flash address used to link the kernel object files,
965 and for storing it, is configuration dependent. Therefore, if you
966 say Y here, you must know the proper physical address where to
967 store the kernel image depending on your own flash memory usage.
969 Also note that the make target becomes "make xipImage" rather than
970 "make zImage" or "make Image". The final kernel binary to put in
971 ROM memory will be arch/arm/boot/xipImage.
976 hex "XIP Kernel Physical Location"
977 depends on XIP_KERNEL
980 This is the physical address in your flash memory the kernel will
981 be linked for and stored to. This address is dependent on your
985 bool "Kexec system call (EXPERIMENTAL)"
986 depends on EXPERIMENTAL
988 kexec is a system call that implements the ability to shutdown your
989 current kernel, and to start another kernel. It is like a reboot
990 but it is independent of the system firmware. And like a reboot
991 you can start any kernel with it, not just Linux.
993 It is an ongoing process to be certain the hardware in a machine
994 is properly shutdown, so do not be surprised if this code does not
995 initially work for you. It may help to enable device hotplugging
999 bool "Export atags in procfs"
1003 Should the atags used to boot the kernel be exported in an "atags"
1004 file in procfs. Useful with kexec.
1008 menu "CPU Power Management"
1010 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1012 source "drivers/cpufreq/Kconfig"
1014 config CPU_FREQ_SA1100
1016 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1019 config CPU_FREQ_SA1110
1021 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1024 config CPU_FREQ_INTEGRATOR
1025 tristate "CPUfreq driver for ARM Integrator CPUs"
1026 depends on ARCH_INTEGRATOR && CPU_FREQ
1029 This enables the CPUfreq driver for ARM Integrator CPUs.
1031 For details, take a look at <file:Documentation/cpu-freq>.
1036 tristate "CPUfreq driver for i.MX CPUs"
1037 depends on ARCH_IMX && CPU_FREQ
1040 This enables the CPUfreq driver for i.MX CPUs.
1046 depends on CPU_FREQ && ARCH_PXA && PXA25x
1048 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1052 source "drivers/cpuidle/Kconfig"
1056 menu "Floating point emulation"
1058 comment "At least one emulation must be selected"
1061 bool "NWFPE math emulation"
1062 depends on !AEABI || OABI_COMPAT
1064 Say Y to include the NWFPE floating point emulator in the kernel.
1065 This is necessary to run most binaries. Linux does not currently
1066 support floating point hardware so you need to say Y here even if
1067 your machine has an FPA or floating point co-processor podule.
1069 You may say N here if you are going to load the Acorn FPEmulator
1070 early in the bootup.
1073 bool "Support extended precision"
1074 depends on FPE_NWFPE
1076 Say Y to include 80-bit support in the kernel floating-point
1077 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1078 Note that gcc does not generate 80-bit operations by default,
1079 so in most cases this option only enlarges the size of the
1080 floating point emulator without any good reason.
1082 You almost surely want to say N here.
1085 bool "FastFPE math emulation (EXPERIMENTAL)"
1086 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1088 Say Y here to include the FAST floating point emulator in the kernel.
1089 This is an experimental much faster emulator which now also has full
1090 precision for the mantissa. It does not support any exceptions.
1091 It is very simple, and approximately 3-6 times faster than NWFPE.
1093 It should be sufficient for most programs. It may be not suitable
1094 for scientific calculations, but you have to check this for yourself.
1095 If you do not feel you need a faster FP emulation you should better
1099 bool "VFP-format floating point maths"
1100 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1102 Say Y to include VFP support code in the kernel. This is needed
1103 if your hardware includes a VFP unit.
1105 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1106 release notes and additional status information.
1108 Say N if your target does not have VFP hardware.
1116 bool "Advanced SIMD (NEON) Extension support"
1117 depends on VFPv3 && CPU_V7
1119 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1124 menu "Userspace binary formats"
1126 source "fs/Kconfig.binfmt"
1129 tristate "RISC OS personality"
1132 Say Y here to include the kernel code necessary if you want to run
1133 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1134 experimental; if this sounds frightening, say N and sleep in peace.
1135 You can also say M here to compile this support as a module (which
1136 will be called arthur).
1140 menu "Power management options"
1142 source "kernel/power/Kconfig"
1144 config ARCH_SUSPEND_POSSIBLE
1149 source "net/Kconfig"
1151 menu "Device Drivers"
1153 source "drivers/base/Kconfig"
1155 source "drivers/connector/Kconfig"
1157 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1158 source "drivers/mtd/Kconfig"
1161 source "drivers/parport/Kconfig"
1163 source "drivers/pnp/Kconfig"
1165 source "drivers/block/Kconfig"
1167 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1169 source "drivers/misc/Kconfig"
1171 source "drivers/ide/Kconfig"
1173 source "drivers/scsi/Kconfig"
1175 source "drivers/ata/Kconfig"
1177 source "drivers/md/Kconfig"
1179 source "drivers/message/fusion/Kconfig"
1181 source "drivers/ieee1394/Kconfig"
1183 source "drivers/message/i2o/Kconfig"
1185 source "drivers/net/Kconfig"
1187 source "drivers/isdn/Kconfig"
1189 # input before char - char/joystick depends on it. As does USB.
1191 source "drivers/input/Kconfig"
1193 source "drivers/char/Kconfig"
1195 source "drivers/i2c/Kconfig"
1197 source "drivers/spi/Kconfig"
1199 source "drivers/gpio/Kconfig"
1201 source "drivers/w1/Kconfig"
1203 source "drivers/power/Kconfig"
1205 source "drivers/hwmon/Kconfig"
1207 source "drivers/thermal/Kconfig"
1209 source "drivers/watchdog/Kconfig"
1211 source "drivers/ssb/Kconfig"
1213 #source "drivers/l3/Kconfig"
1215 source "drivers/mfd/Kconfig"
1217 source "drivers/media/Kconfig"
1219 source "drivers/video/Kconfig"
1221 source "sound/Kconfig"
1223 source "drivers/hid/Kconfig"
1225 source "drivers/usb/Kconfig"
1227 source "drivers/mmc/Kconfig"
1229 source "drivers/memstick/Kconfig"
1231 source "drivers/accessibility/Kconfig"
1233 source "drivers/leds/Kconfig"
1235 source "drivers/rtc/Kconfig"
1237 source "drivers/dma/Kconfig"
1239 source "drivers/dca/Kconfig"
1241 source "drivers/auxdisplay/Kconfig"
1243 source "drivers/regulator/Kconfig"
1245 source "drivers/uio/Kconfig"
1251 source "arch/arm/Kconfig.debug"
1253 source "security/Kconfig"
1255 source "crypto/Kconfig"
1257 source "lib/Kconfig"