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
316 Support for Intel's IOP13XX (XScale) family of processors.
324 select ARCH_REQUIRE_GPIOLIB
326 Support for Intel's 80219 and IOP32X (XScale) family of
335 select ARCH_REQUIRE_GPIOLIB
337 Support for Intel's IOP33X (XScale) family of processors.
344 Support for Intel's IXP23xx (XScale) family of processors.
347 bool "IXP2400/2800-based"
351 Support for Intel's IXP2400/2800 (XScale) family of processors.
358 select GENERIC_CLOCKEVENTS
360 Support for Intel's IXP4XX (XScale) family of processors.
366 Say Y here if you intend to run this kernel on a LinkUp Systems
367 L7200 Software Development Board which uses an ARM720T processor.
368 Information on this board can be obtained at:
370 <http://www.linkupsys.com/>
372 If you have any questions or comments about the Linux kernel port
373 to this board, send e-mail to <sjhill@cotw.com>.
376 bool "Marvell Kirkwood"
379 select GENERIC_CLOCKEVENTS
382 Support for the following Marvell Kirkwood series SoCs:
383 88F6180, 88F6192 and 88F6281.
386 bool "Micrel/Kendin KS8695"
389 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
390 System-on-Chip devices.
393 bool "NetSilicon NS9xxx"
396 select GENERIC_CLOCKEVENTS
399 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
402 <http://www.digi.com/products/microprocessors/index.jsp>
405 bool "Marvell Loki (88RC8480)"
407 select GENERIC_CLOCKEVENTS
410 Support for the Marvell Loki (88RC8480) SoC.
413 bool "Marvell MV78xx0"
416 select GENERIC_CLOCKEVENTS
419 Support for the following Marvell MV78xx0 series SoCs:
423 bool "Freescale MXC/iMX-based"
425 select GENERIC_CLOCKEVENTS
428 select ARCH_REQUIRE_GPIOLIB
430 Support for Freescale MXC/iMX-based family of processors
438 select GENERIC_CLOCKEVENTS
441 Support for the following Marvell Orion 5x series SoCs:
442 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
446 bool "Philips Nexperia PNX4008 Mobile"
449 This enables support for Philips PNX4008 mobile platform.
452 bool "PXA2xx/PXA3xx-based"
457 select ARCH_REQUIRE_GPIOLIB
459 select GENERIC_CLOCKEVENTS
462 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
469 select ARCH_MAY_HAVE_PC_FDC
470 select HAVE_PATA_PLATFORM
474 On the Acorn Risc-PC, Linux can support the internal IDE disk and
475 CD-ROM interface, serial and parallel port, and the floppy drive.
480 select ARCH_DISCONTIGMEM_ENABLE
481 select ARCH_SPARSEMEM_ENABLE
482 select ARCH_SELECT_MEMORY_MODEL
486 select GENERIC_CLOCKEVENTS
489 select ARCH_REQUIRE_GPIOLIB
491 Support for StrongARM 11x0 based boards.
494 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
498 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
499 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
500 the Samsung SMDK2410 development board (and derivatives).
508 Support for the StrongARM based Digital DNARD machine, also known
509 as "Shark" (<http://www.shark-linux.de/shark.html>).
514 Say Y here for systems based on one of the Sharp LH7A40X
515 System on a Chip processors. These CPUs include an ARM922T
516 core with a wide array of integrated devices for
517 hand-held and low-power applications.
522 select GENERIC_CLOCKEVENTS
526 Support for TI's DaVinci platform.
532 select ARCH_REQUIRE_GPIOLIB
534 select GENERIC_CLOCKEVENTS
536 Support for TI's OMAP platform (OMAP1 and OMAP2).
539 bool "Qualcomm MSM7X00A"
541 select GENERIC_CLOCKEVENTS
543 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
544 apps processor of the MSM7X00A and depends on a shared memory
545 interface to the ARM9 modem processor which runs the baseband stack
546 and controls some vital subsystems (clock and power control, etc).
547 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
551 source "arch/arm/mach-clps711x/Kconfig"
553 source "arch/arm/mach-ep93xx/Kconfig"
555 source "arch/arm/mach-footbridge/Kconfig"
557 source "arch/arm/mach-integrator/Kconfig"
559 source "arch/arm/mach-iop32x/Kconfig"
561 source "arch/arm/mach-iop33x/Kconfig"
563 source "arch/arm/mach-iop13xx/Kconfig"
565 source "arch/arm/mach-ixp4xx/Kconfig"
567 source "arch/arm/mach-ixp2000/Kconfig"
569 source "arch/arm/mach-ixp23xx/Kconfig"
571 source "arch/arm/mach-loki/Kconfig"
573 source "arch/arm/mach-mv78xx0/Kconfig"
575 source "arch/arm/mach-pxa/Kconfig"
577 source "arch/arm/mach-sa1100/Kconfig"
579 source "arch/arm/plat-omap/Kconfig"
581 source "arch/arm/mach-omap1/Kconfig"
583 source "arch/arm/mach-omap2/Kconfig"
585 source "arch/arm/mach-orion5x/Kconfig"
587 source "arch/arm/mach-kirkwood/Kconfig"
589 source "arch/arm/plat-s3c24xx/Kconfig"
590 source "arch/arm/plat-s3c/Kconfig"
593 source "arch/arm/mach-s3c2400/Kconfig"
594 source "arch/arm/mach-s3c2410/Kconfig"
595 source "arch/arm/mach-s3c2412/Kconfig"
596 source "arch/arm/mach-s3c2440/Kconfig"
597 source "arch/arm/mach-s3c2442/Kconfig"
598 source "arch/arm/mach-s3c2443/Kconfig"
601 source "arch/arm/mach-lh7a40x/Kconfig"
603 source "arch/arm/mach-imx/Kconfig"
605 source "arch/arm/mach-h720x/Kconfig"
607 source "arch/arm/mach-versatile/Kconfig"
609 source "arch/arm/mach-aaec2000/Kconfig"
611 source "arch/arm/mach-realview/Kconfig"
613 source "arch/arm/mach-at91/Kconfig"
615 source "arch/arm/plat-mxc/Kconfig"
617 source "arch/arm/mach-netx/Kconfig"
619 source "arch/arm/mach-ns9xxx/Kconfig"
621 source "arch/arm/mach-davinci/Kconfig"
623 source "arch/arm/mach-ks8695/Kconfig"
625 source "arch/arm/mach-msm/Kconfig"
627 # Definitions to make life easier
637 source arch/arm/mm/Kconfig
640 bool "Enable iWMMXt support"
641 depends on CPU_XSCALE || CPU_XSC3
642 default y if PXA27x || PXA3xx
644 Enable support for iWMMXt context switching at run time if
645 running on a CPU that supports it.
647 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
650 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
654 source "arch/arm/Kconfig-nommu"
659 source "arch/arm/common/Kconfig"
661 config FORCE_MAX_ZONEORDER
674 Find out whether you have ISA slots on your motherboard. ISA is the
675 name of a bus system, i.e. the way the CPU talks to the other stuff
676 inside your box. Other bus systems are PCI, EISA, MicroChannel
677 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
678 newer boards don't support it. If you have ISA, say Y, otherwise N.
680 # Select ISA DMA controller support
685 # Select ISA DMA interface
690 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
692 Find out whether you have a PCI motherboard. PCI is the name of a
693 bus system, i.e. the way the CPU talks to the other stuff inside
694 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
695 VESA. If you have PCI, say Y, otherwise N.
700 # Select the host bridge type
701 config PCI_HOST_VIA82C505
703 depends on PCI && ARCH_SHARK
706 config PCI_HOST_ITE8152
708 depends on PCI && MACH_ARMCORE
712 source "drivers/pci/Kconfig"
714 source "drivers/pcmcia/Kconfig"
718 menu "Kernel Features"
720 source "kernel/time/Kconfig"
723 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
724 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
725 select USE_GENERIC_SMP_HELPERS
727 This enables support for systems with more than one CPU. If you have
728 a system with only one CPU, like most personal computers, say N. If
729 you have a system with more than one CPU, say Y.
731 If you say N here, the kernel will run on single and multiprocessor
732 machines, but will use only one CPU of a multiprocessor machine. If
733 you say Y here, the kernel will run on many, but not all, single
734 processor machines. On a single processor machine, the kernel will
735 run faster if you say N here.
737 See also <file:Documentation/i386/IO-APIC.txt>,
738 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
739 <http://www.linuxdoc.org/docs.html#howto>.
741 If you don't know what to do here, say N.
744 prompt "Memory split"
747 Select the desired split between kernel and user memory.
749 If you are not absolutely sure what you are doing, leave this
753 bool "3G/1G user/kernel split"
755 bool "2G/2G user/kernel split"
757 bool "1G/3G user/kernel split"
762 default 0x40000000 if VMSPLIT_1G
763 default 0x80000000 if VMSPLIT_2G
767 int "Maximum number of CPUs (2-32)"
773 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
774 depends on SMP && HOTPLUG && EXPERIMENTAL
776 Say Y here to experiment with turning CPUs off and on. CPUs
777 can be controlled through /sys/devices/system/cpu.
780 bool "Use local timer interrupts"
781 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
784 Enable support for local timers on SMP platforms, rather then the
785 legacy IPI broadcast method. Local timers allows the system
786 accounting to be spread across the timer interval, preventing a
787 "thundering herd" at every timer tick.
790 bool "Preemptible Kernel (EXPERIMENTAL)"
791 depends on EXPERIMENTAL
793 This option reduces the latency of the kernel when reacting to
794 real-time or interactive events by allowing a low priority process to
795 be preempted even if it is in kernel mode executing a system call.
796 This allows applications to run more reliably even when the system is
799 Say Y here if you are building a kernel for a desktop, embedded
800 or real-time system. Say N if you are unsure.
804 default 128 if ARCH_L7200
805 default 200 if ARCH_EBSA110 || ARCH_S3C2410
806 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
807 default AT91_TIMER_HZ if ARCH_AT91
811 bool "Use the ARM EABI to compile the kernel"
813 This option allows for the kernel to be compiled using the latest
814 ARM ABI (aka EABI). This is only useful if you are using a user
815 space environment that is also compiled with EABI.
817 Since there are major incompatibilities between the legacy ABI and
818 EABI, especially with regard to structure member alignment, this
819 option also changes the kernel syscall calling convention to
820 disambiguate both ABIs and allow for backward compatibility support
821 (selected with CONFIG_OABI_COMPAT).
823 To use this you need GCC version 4.0.0 or later.
826 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
827 depends on AEABI && EXPERIMENTAL
830 This option preserves the old syscall interface along with the
831 new (ARM EABI) one. It also provides a compatibility layer to
832 intercept syscalls that have structure arguments which layout
833 in memory differs between the legacy ABI and the new ARM EABI
834 (only for non "thumb" binaries). This option adds a tiny
835 overhead to all syscalls and produces a slightly larger kernel.
836 If you know you'll be using only pure EABI user space then you
837 can say N here. If this option is not selected and you attempt
838 to execute a legacy ABI binary then the result will be
839 UNPREDICTABLE (in fact it can be predicted that it won't work
840 at all). If in doubt say Y.
842 config ARCH_DISCONTIGMEM_ENABLE
844 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
846 Say Y to support efficient handling of discontiguous physical memory,
847 for architectures which are either NUMA (Non-Uniform Memory Access)
848 or have huge holes in the physical address space for other reasons.
849 See <file:Documentation/vm/numa> for more.
851 config ARCH_SPARSEMEM_ENABLE
854 config ARCH_SELECT_MEMORY_MODEL
859 default "4" if ARCH_LH7A40X
861 depends on NEED_MULTIPLE_NODES
866 bool "Timer and CPU usage LEDs"
867 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
868 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
869 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
870 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
871 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
872 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
873 ARCH_KS8695 || MACH_RD88F5182
875 If you say Y here, the LEDs on your machine will be used
876 to provide useful information about your current system status.
878 If you are compiling a kernel for a NetWinder or EBSA-285, you will
879 be able to select which LEDs are active using the options below. If
880 you are compiling a kernel for the EBSA-110 or the LART however, the
881 red LED will simply flash regularly to indicate that the system is
882 still functional. It is safe to say Y here if you have a CATS
883 system, but the driver will do nothing.
886 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
887 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
888 || MACH_OMAP_PERSEUS2
890 depends on !GENERIC_CLOCKEVENTS
891 default y if ARCH_EBSA110
893 If you say Y here, one of the system LEDs (the green one on the
894 NetWinder, the amber one on the EBSA285, or the red one on the LART)
895 will flash regularly to indicate that the system is still
896 operational. This is mainly useful to kernel hackers who are
897 debugging unstable kernels.
899 The LART uses the same LED for both Timer LED and CPU usage LED
900 functions. You may choose to use both, but the Timer LED function
901 will overrule the CPU usage LED.
904 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
906 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
907 || MACH_OMAP_PERSEUS2
910 If you say Y here, the red LED will be used to give a good real
911 time indication of CPU usage, by lighting whenever the idle task
912 is not currently executing.
914 The LART uses the same LED for both Timer LED and CPU usage LED
915 functions. You may choose to use both, but the Timer LED function
916 will overrule the CPU usage LED.
918 config ALIGNMENT_TRAP
920 depends on CPU_CP15_MMU
921 default y if !ARCH_EBSA110
923 ARM processors cannot fetch/store information which is not
924 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
925 address divisible by 4. On 32-bit ARM processors, these non-aligned
926 fetch/store instructions will be emulated in software if you say
927 here, which has a severe performance impact. This is necessary for
928 correct operation of some network protocols. With an IP-only
929 configuration it is safe to say N, otherwise say Y.
935 # Compressed boot loader in ROM. Yes, we really want to ask about
936 # TEXT and BSS so we preserve their values in the config files.
937 config ZBOOT_ROM_TEXT
938 hex "Compressed ROM boot loader base address"
941 The physical address at which the ROM-able zImage is to be
942 placed in the target. Platforms which normally make use of
943 ROM-able zImage formats normally set this to a suitable
944 value in their defconfig file.
946 If ZBOOT_ROM is not enabled, this has no effect.
949 hex "Compressed ROM boot loader BSS address"
952 The base address of an area of read/write memory in the target
953 for the ROM-able zImage which must be available while the
954 decompressor is running. It must be large enough to hold the
955 entire decompressed kernel plus an additional 128 KiB.
956 Platforms which normally make use of ROM-able zImage formats
957 normally set this to a suitable value in their defconfig file.
959 If ZBOOT_ROM is not enabled, this has no effect.
962 bool "Compressed boot loader in ROM/flash"
963 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
965 Say Y here if you intend to execute your compressed kernel image
966 (zImage) directly from ROM or flash. If unsure, say N.
969 string "Default kernel command string"
972 On some architectures (EBSA110 and CATS), there is currently no way
973 for the boot loader to pass arguments to the kernel. For these
974 architectures, you should supply some command-line options at build
975 time by entering them here. As a minimum, you should specify the
976 memory size and the root device (e.g., mem=64M root=/dev/nfs).
979 bool "Kernel Execute-In-Place from ROM"
980 depends on !ZBOOT_ROM
982 Execute-In-Place allows the kernel to run from non-volatile storage
983 directly addressable by the CPU, such as NOR flash. This saves RAM
984 space since the text section of the kernel is not loaded from flash
985 to RAM. Read-write sections, such as the data section and stack,
986 are still copied to RAM. The XIP kernel is not compressed since
987 it has to run directly from flash, so it will take more space to
988 store it. The flash address used to link the kernel object files,
989 and for storing it, is configuration dependent. Therefore, if you
990 say Y here, you must know the proper physical address where to
991 store the kernel image depending on your own flash memory usage.
993 Also note that the make target becomes "make xipImage" rather than
994 "make zImage" or "make Image". The final kernel binary to put in
995 ROM memory will be arch/arm/boot/xipImage.
1000 hex "XIP Kernel Physical Location"
1001 depends on XIP_KERNEL
1002 default "0x00080000"
1004 This is the physical address in your flash memory the kernel will
1005 be linked for and stored to. This address is dependent on your
1009 bool "Kexec system call (EXPERIMENTAL)"
1010 depends on EXPERIMENTAL
1012 kexec is a system call that implements the ability to shutdown your
1013 current kernel, and to start another kernel. It is like a reboot
1014 but it is independent of the system firmware. And like a reboot
1015 you can start any kernel with it, not just Linux.
1017 It is an ongoing process to be certain the hardware in a machine
1018 is properly shutdown, so do not be surprised if this code does not
1019 initially work for you. It may help to enable device hotplugging
1023 bool "Export atags in procfs"
1027 Should the atags used to boot the kernel be exported in an "atags"
1028 file in procfs. Useful with kexec.
1032 menu "CPU Power Management"
1034 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1036 source "drivers/cpufreq/Kconfig"
1038 config CPU_FREQ_SA1100
1040 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1043 config CPU_FREQ_SA1110
1045 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1048 config CPU_FREQ_INTEGRATOR
1049 tristate "CPUfreq driver for ARM Integrator CPUs"
1050 depends on ARCH_INTEGRATOR && CPU_FREQ
1053 This enables the CPUfreq driver for ARM Integrator CPUs.
1055 For details, take a look at <file:Documentation/cpu-freq>.
1060 tristate "CPUfreq driver for i.MX CPUs"
1061 depends on ARCH_IMX && CPU_FREQ
1064 This enables the CPUfreq driver for i.MX CPUs.
1070 depends on CPU_FREQ && ARCH_PXA && PXA25x
1072 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1076 source "drivers/cpuidle/Kconfig"
1080 menu "Floating point emulation"
1082 comment "At least one emulation must be selected"
1085 bool "NWFPE math emulation"
1086 depends on !AEABI || OABI_COMPAT
1088 Say Y to include the NWFPE floating point emulator in the kernel.
1089 This is necessary to run most binaries. Linux does not currently
1090 support floating point hardware so you need to say Y here even if
1091 your machine has an FPA or floating point co-processor podule.
1093 You may say N here if you are going to load the Acorn FPEmulator
1094 early in the bootup.
1097 bool "Support extended precision"
1098 depends on FPE_NWFPE
1100 Say Y to include 80-bit support in the kernel floating-point
1101 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1102 Note that gcc does not generate 80-bit operations by default,
1103 so in most cases this option only enlarges the size of the
1104 floating point emulator without any good reason.
1106 You almost surely want to say N here.
1109 bool "FastFPE math emulation (EXPERIMENTAL)"
1110 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1112 Say Y here to include the FAST floating point emulator in the kernel.
1113 This is an experimental much faster emulator which now also has full
1114 precision for the mantissa. It does not support any exceptions.
1115 It is very simple, and approximately 3-6 times faster than NWFPE.
1117 It should be sufficient for most programs. It may be not suitable
1118 for scientific calculations, but you have to check this for yourself.
1119 If you do not feel you need a faster FP emulation you should better
1123 bool "VFP-format floating point maths"
1124 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1126 Say Y to include VFP support code in the kernel. This is needed
1127 if your hardware includes a VFP unit.
1129 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1130 release notes and additional status information.
1132 Say N if your target does not have VFP hardware.
1140 bool "Advanced SIMD (NEON) Extension support"
1141 depends on VFPv3 && CPU_V7
1143 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1148 menu "Userspace binary formats"
1150 source "fs/Kconfig.binfmt"
1153 tristate "RISC OS personality"
1156 Say Y here to include the kernel code necessary if you want to run
1157 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1158 experimental; if this sounds frightening, say N and sleep in peace.
1159 You can also say M here to compile this support as a module (which
1160 will be called arthur).
1164 menu "Power management options"
1166 source "kernel/power/Kconfig"
1168 config ARCH_SUSPEND_POSSIBLE
1173 source "net/Kconfig"
1175 menu "Device Drivers"
1177 source "drivers/base/Kconfig"
1179 source "drivers/connector/Kconfig"
1181 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1182 source "drivers/mtd/Kconfig"
1185 source "drivers/parport/Kconfig"
1187 source "drivers/pnp/Kconfig"
1189 source "drivers/block/Kconfig"
1191 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1193 source "drivers/misc/Kconfig"
1195 source "drivers/ide/Kconfig"
1197 source "drivers/scsi/Kconfig"
1199 source "drivers/ata/Kconfig"
1201 source "drivers/md/Kconfig"
1203 source "drivers/message/fusion/Kconfig"
1205 source "drivers/ieee1394/Kconfig"
1207 source "drivers/message/i2o/Kconfig"
1209 source "drivers/net/Kconfig"
1211 source "drivers/isdn/Kconfig"
1213 # input before char - char/joystick depends on it. As does USB.
1215 source "drivers/input/Kconfig"
1217 source "drivers/char/Kconfig"
1219 source "drivers/i2c/Kconfig"
1221 source "drivers/spi/Kconfig"
1223 source "drivers/gpio/Kconfig"
1225 source "drivers/w1/Kconfig"
1227 source "drivers/power/Kconfig"
1229 source "drivers/hwmon/Kconfig"
1231 source "drivers/thermal/Kconfig"
1233 source "drivers/watchdog/Kconfig"
1235 source "drivers/ssb/Kconfig"
1237 #source "drivers/l3/Kconfig"
1239 source "drivers/mfd/Kconfig"
1241 source "drivers/media/Kconfig"
1243 source "drivers/video/Kconfig"
1245 source "sound/Kconfig"
1247 source "drivers/hid/Kconfig"
1249 source "drivers/usb/Kconfig"
1251 source "drivers/mmc/Kconfig"
1253 source "drivers/memstick/Kconfig"
1255 source "drivers/accessibility/Kconfig"
1257 source "drivers/leds/Kconfig"
1259 source "drivers/rtc/Kconfig"
1261 source "drivers/dma/Kconfig"
1263 source "drivers/dca/Kconfig"
1265 source "drivers/auxdisplay/Kconfig"
1267 source "drivers/regulator/Kconfig"
1269 source "drivers/uio/Kconfig"
1275 source "arch/arm/Kconfig.debug"
1277 source "security/Kconfig"
1279 source "crypto/Kconfig"
1281 source "lib/Kconfig"