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_FTRACE if (!XIP_KERNEL)
20 select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
21 select HAVE_GENERIC_DMA_COHERENT
23 The ARM series is a line of low-power-consumption RISC chip designs
24 licensed by ARM Ltd and targeted at embedded applications and
25 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
26 manufactured, but legacy ARM-based PC hardware remains popular in
27 Europe. There is an ARM Linux project with a web page at
28 <http://www.arm.linux.org.uk/>.
33 config SYS_SUPPORTS_APM_EMULATION
44 config GENERIC_CLOCKEVENTS
48 config GENERIC_CLOCKEVENTS_BROADCAST
50 depends on GENERIC_CLOCKEVENTS
51 default y if SMP && !LOCAL_TIMERS
64 The Extended Industry Standard Architecture (EISA) bus was
65 developed as an open alternative to the IBM MicroChannel bus.
67 The EISA bus provided some of the features of the IBM MicroChannel
68 bus while maintaining backward compatibility with cards made for
69 the older ISA bus. The EISA bus saw limited use between 1988 and
70 1995 when it was made obsolete by the PCI bus.
72 Say Y here if you are building a kernel for an EISA-based machine.
82 MicroChannel Architecture is found in some IBM PS/2 machines and
83 laptops. It is a bus system similar to PCI or ISA. See
84 <file:Documentation/mca.txt> (and especially the web page given
85 there) before attempting to build an MCA bus kernel.
87 config GENERIC_HARDIRQS
91 config STACKTRACE_SUPPORT
95 config HAVE_LATENCYTOP_SUPPORT
100 config LOCKDEP_SUPPORT
104 config TRACE_IRQFLAGS_SUPPORT
108 config HARDIRQS_SW_RESEND
112 config GENERIC_IRQ_PROBE
116 config GENERIC_LOCKBREAK
119 depends on SMP && PREEMPT
121 config RWSEM_GENERIC_SPINLOCK
125 config RWSEM_XCHGADD_ALGORITHM
128 config ARCH_HAS_ILOG2_U32
132 config ARCH_HAS_ILOG2_U64
136 config GENERIC_HWEIGHT
140 config GENERIC_CALIBRATE_DELAY
144 config ARCH_MAY_HAVE_PC_FDC
150 config GENERIC_ISA_DMA
159 config GENERIC_HARDIRQS_NO__DO_IRQ
165 config OPROFILE_ARMV6
167 depends on CPU_V6 && !SMP
168 select OPROFILE_ARM11_CORE
170 config OPROFILE_MPCORE
172 depends on CPU_V6 && SMP
173 select OPROFILE_ARM11_CORE
175 config OPROFILE_ARM11_CORE
178 config OPROFILE_ARMV7
180 depends on CPU_V7 && !SMP
187 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
188 default DRAM_BASE if REMAP_VECTORS_TO_RAM
191 The base address of exception vectors.
193 source "init/Kconfig"
195 source "kernel/Kconfig.freezer"
200 prompt "ARM system type"
201 default ARCH_VERSATILE
204 bool "Agilent AAEC-2000 based"
208 This enables support for systems based on the Agilent AAEC-2000
210 config ARCH_INTEGRATOR
211 bool "ARM Ltd. Integrator family"
216 Support for ARM's Integrator platform.
219 bool "ARM Ltd. RealView family"
224 select GENERIC_CLOCKEVENTS
226 This enables support for ARM Ltd RealView boards.
228 config ARCH_VERSATILE
229 bool "ARM Ltd. Versatile family"
235 select GENERIC_CLOCKEVENTS
237 This enables support for ARM Ltd Versatile board.
244 This enables support for systems based on the Atmel AT91RM9200,
245 AT91SAM9 and AT91CAP9 processors.
248 bool "Cirrus CL-PS7500FE"
252 select ARCH_SPARSEMEM_ENABLE
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
359 select ZONE_DMA if PCI
361 Support for Intel's IXP4XX (XScale) family of processors.
367 Say Y here if you intend to run this kernel on a LinkUp Systems
368 L7200 Software Development Board which uses an ARM720T processor.
369 Information on this board can be obtained at:
371 <http://www.linkupsys.com/>
373 If you have any questions or comments about the Linux kernel port
374 to this board, send e-mail to <sjhill@cotw.com>.
377 bool "Marvell Kirkwood"
380 select GENERIC_CLOCKEVENTS
383 Support for the following Marvell Kirkwood series SoCs:
384 88F6180, 88F6192 and 88F6281.
387 bool "Micrel/Kendin KS8695"
390 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
391 System-on-Chip devices.
394 bool "NetSilicon NS9xxx"
397 select GENERIC_CLOCKEVENTS
400 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
403 <http://www.digi.com/products/microprocessors/index.jsp>
406 bool "Marvell Loki (88RC8480)"
408 select GENERIC_CLOCKEVENTS
411 Support for the Marvell Loki (88RC8480) SoC.
414 bool "Marvell MV78xx0"
417 select GENERIC_CLOCKEVENTS
420 Support for the following Marvell MV78xx0 series SoCs:
424 bool "Freescale MXC/iMX-based"
426 select GENERIC_CLOCKEVENTS
429 select ARCH_REQUIRE_GPIOLIB
431 Support for Freescale MXC/iMX-based family of processors
439 select GENERIC_CLOCKEVENTS
442 Support for the following Marvell Orion 5x series SoCs:
443 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
444 Orion-2 (5281), Orion-1-90 (6183).
447 bool "Philips Nexperia PNX4008 Mobile"
450 This enables support for Philips PNX4008 mobile platform.
453 bool "PXA2xx/PXA3xx-based"
458 select ARCH_REQUIRE_GPIOLIB
460 select GENERIC_CLOCKEVENTS
463 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
470 select ARCH_MAY_HAVE_PC_FDC
471 select HAVE_PATA_PLATFORM
474 select ARCH_SPARSEMEM_ENABLE
476 On the Acorn Risc-PC, Linux can support the internal IDE disk and
477 CD-ROM interface, serial and parallel port, and the floppy drive.
482 select ARCH_SPARSEMEM_ENABLE
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).
509 Support for the StrongARM based Digital DNARD machine, also known
510 as "Shark" (<http://www.shark-linux.de/shark.html>).
514 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
515 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
517 Say Y here for systems based on one of the Sharp LH7A40X
518 System on a Chip processors. These CPUs include an ARM922T
519 core with a wide array of integrated devices for
520 hand-held and low-power applications.
525 select GENERIC_CLOCKEVENTS
527 select ARCH_REQUIRE_GPIOLIB
531 Support for TI's DaVinci platform.
537 select ARCH_REQUIRE_GPIOLIB
539 select GENERIC_CLOCKEVENTS
541 Support for TI's OMAP platform (OMAP1 and OMAP2).
546 select GENERIC_CLOCKEVENTS
548 Support for Qualcomm MSM7K based systems. This runs on the ARM11
549 apps processor of the MSM7K and depends on a shared memory
550 interface to the ARM9 modem processor which runs the baseband stack
551 and controls some vital subsystems (clock and power control, etc).
555 source "arch/arm/mach-clps711x/Kconfig"
557 source "arch/arm/mach-ep93xx/Kconfig"
559 source "arch/arm/mach-footbridge/Kconfig"
561 source "arch/arm/mach-integrator/Kconfig"
563 source "arch/arm/mach-iop32x/Kconfig"
565 source "arch/arm/mach-iop33x/Kconfig"
567 source "arch/arm/mach-iop13xx/Kconfig"
569 source "arch/arm/mach-ixp4xx/Kconfig"
571 source "arch/arm/mach-ixp2000/Kconfig"
573 source "arch/arm/mach-ixp23xx/Kconfig"
575 source "arch/arm/mach-loki/Kconfig"
577 source "arch/arm/mach-mv78xx0/Kconfig"
579 source "arch/arm/mach-pxa/Kconfig"
581 source "arch/arm/mach-sa1100/Kconfig"
583 source "arch/arm/plat-omap/Kconfig"
585 source "arch/arm/mach-omap1/Kconfig"
587 source "arch/arm/mach-omap2/Kconfig"
589 source "arch/arm/mach-orion5x/Kconfig"
591 source "arch/arm/mach-kirkwood/Kconfig"
593 source "arch/arm/plat-s3c24xx/Kconfig"
594 source "arch/arm/plat-s3c/Kconfig"
597 source "arch/arm/mach-s3c2400/Kconfig"
598 source "arch/arm/mach-s3c2410/Kconfig"
599 source "arch/arm/mach-s3c2412/Kconfig"
600 source "arch/arm/mach-s3c2440/Kconfig"
601 source "arch/arm/mach-s3c2442/Kconfig"
602 source "arch/arm/mach-s3c2443/Kconfig"
605 source "arch/arm/mach-lh7a40x/Kconfig"
607 source "arch/arm/mach-imx/Kconfig"
609 source "arch/arm/mach-h720x/Kconfig"
611 source "arch/arm/mach-versatile/Kconfig"
613 source "arch/arm/mach-aaec2000/Kconfig"
615 source "arch/arm/mach-realview/Kconfig"
617 source "arch/arm/mach-at91/Kconfig"
619 source "arch/arm/plat-mxc/Kconfig"
621 source "arch/arm/mach-netx/Kconfig"
623 source "arch/arm/mach-ns9xxx/Kconfig"
625 source "arch/arm/mach-davinci/Kconfig"
627 source "arch/arm/mach-ks8695/Kconfig"
629 source "arch/arm/mach-msm/Kconfig"
631 # Definitions to make life easier
641 source arch/arm/mm/Kconfig
644 bool "Enable iWMMXt support"
645 depends on CPU_XSCALE || CPU_XSC3
646 default y if PXA27x || PXA3xx
648 Enable support for iWMMXt context switching at run time if
649 running on a CPU that supports it.
651 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
654 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
658 source "arch/arm/Kconfig-nommu"
663 source "arch/arm/common/Kconfig"
665 config FORCE_MAX_ZONEORDER
678 Find out whether you have ISA slots on your motherboard. ISA is the
679 name of a bus system, i.e. the way the CPU talks to the other stuff
680 inside your box. Other bus systems are PCI, EISA, MicroChannel
681 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
682 newer boards don't support it. If you have ISA, say Y, otherwise N.
684 # Select ISA DMA controller support
689 # Select ISA DMA interface
694 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
696 Find out whether you have a PCI motherboard. PCI is the name of a
697 bus system, i.e. the way the CPU talks to the other stuff inside
698 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
699 VESA. If you have PCI, say Y, otherwise N.
704 # Select the host bridge type
705 config PCI_HOST_VIA82C505
707 depends on PCI && ARCH_SHARK
710 config PCI_HOST_ITE8152
712 depends on PCI && MACH_ARMCORE
716 source "drivers/pci/Kconfig"
718 source "drivers/pcmcia/Kconfig"
722 menu "Kernel Features"
724 source "kernel/time/Kconfig"
727 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
728 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
729 select USE_GENERIC_SMP_HELPERS
731 This enables support for systems with more than one CPU. If you have
732 a system with only one CPU, like most personal computers, say N. If
733 you have a system with more than one CPU, say Y.
735 If you say N here, the kernel will run on single and multiprocessor
736 machines, but will use only one CPU of a multiprocessor machine. If
737 you say Y here, the kernel will run on many, but not all, single
738 processor machines. On a single processor machine, the kernel will
739 run faster if you say N here.
741 See also <file:Documentation/i386/IO-APIC.txt>,
742 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
743 <http://www.linuxdoc.org/docs.html#howto>.
745 If you don't know what to do here, say N.
748 prompt "Memory split"
751 Select the desired split between kernel and user memory.
753 If you are not absolutely sure what you are doing, leave this
757 bool "3G/1G user/kernel split"
759 bool "2G/2G user/kernel split"
761 bool "1G/3G user/kernel split"
766 default 0x40000000 if VMSPLIT_1G
767 default 0x80000000 if VMSPLIT_2G
771 int "Maximum number of CPUs (2-32)"
777 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
778 depends on SMP && HOTPLUG && EXPERIMENTAL
780 Say Y here to experiment with turning CPUs off and on. CPUs
781 can be controlled through /sys/devices/system/cpu.
784 bool "Use local timer interrupts"
785 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
788 Enable support for local timers on SMP platforms, rather then the
789 legacy IPI broadcast method. Local timers allows the system
790 accounting to be spread across the timer interval, preventing a
791 "thundering herd" at every timer tick.
794 bool "Preemptible Kernel (EXPERIMENTAL)"
795 depends on EXPERIMENTAL
797 This option reduces the latency of the kernel when reacting to
798 real-time or interactive events by allowing a low priority process to
799 be preempted even if it is in kernel mode executing a system call.
800 This allows applications to run more reliably even when the system is
803 Say Y here if you are building a kernel for a desktop, embedded
804 or real-time system. Say N if you are unsure.
808 default 128 if ARCH_L7200
809 default 200 if ARCH_EBSA110 || ARCH_S3C2410
810 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
811 default AT91_TIMER_HZ if ARCH_AT91
815 bool "Use the ARM EABI to compile the kernel"
817 This option allows for the kernel to be compiled using the latest
818 ARM ABI (aka EABI). This is only useful if you are using a user
819 space environment that is also compiled with EABI.
821 Since there are major incompatibilities between the legacy ABI and
822 EABI, especially with regard to structure member alignment, this
823 option also changes the kernel syscall calling convention to
824 disambiguate both ABIs and allow for backward compatibility support
825 (selected with CONFIG_OABI_COMPAT).
827 To use this you need GCC version 4.0.0 or later.
830 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
831 depends on AEABI && EXPERIMENTAL
834 This option preserves the old syscall interface along with the
835 new (ARM EABI) one. It also provides a compatibility layer to
836 intercept syscalls that have structure arguments which layout
837 in memory differs between the legacy ABI and the new ARM EABI
838 (only for non "thumb" binaries). This option adds a tiny
839 overhead to all syscalls and produces a slightly larger kernel.
840 If you know you'll be using only pure EABI user space then you
841 can say N here. If this option is not selected and you attempt
842 to execute a legacy ABI binary then the result will be
843 UNPREDICTABLE (in fact it can be predicted that it won't work
844 at all). If in doubt say Y.
846 config ARCH_FLATMEM_HAS_HOLES
851 # Discontigmem is deprecated
852 config ARCH_DISCONTIGMEM_ENABLE
855 config ARCH_SPARSEMEM_ENABLE
858 config ARCH_SPARSEMEM_DEFAULT
859 def_bool ARCH_SPARSEMEM_ENABLE
861 config ARCH_SELECT_MEMORY_MODEL
862 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
866 default "4" if ARCH_LH7A40X
868 depends on NEED_MULTIPLE_NODES
873 bool "Timer and CPU usage LEDs"
874 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
875 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
876 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
877 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
878 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
879 ARCH_AT91 || ARCH_DAVINCI || \
880 ARCH_KS8695 || MACH_RD88F5182
882 If you say Y here, the LEDs on your machine will be used
883 to provide useful information about your current system status.
885 If you are compiling a kernel for a NetWinder or EBSA-285, you will
886 be able to select which LEDs are active using the options below. If
887 you are compiling a kernel for the EBSA-110 or the LART however, the
888 red LED will simply flash regularly to indicate that the system is
889 still functional. It is safe to say Y here if you have a CATS
890 system, but the driver will do nothing.
893 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
894 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
895 || MACH_OMAP_PERSEUS2
897 depends on !GENERIC_CLOCKEVENTS
898 default y if ARCH_EBSA110
900 If you say Y here, one of the system LEDs (the green one on the
901 NetWinder, the amber one on the EBSA285, or the red one on the LART)
902 will flash regularly to indicate that the system is still
903 operational. This is mainly useful to kernel hackers who are
904 debugging unstable kernels.
906 The LART uses the same LED for both Timer LED and CPU usage LED
907 functions. You may choose to use both, but the Timer LED function
908 will overrule the CPU usage LED.
911 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
913 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
914 || MACH_OMAP_PERSEUS2
917 If you say Y here, the red LED will be used to give a good real
918 time indication of CPU usage, by lighting whenever the idle task
919 is not currently executing.
921 The LART uses the same LED for both Timer LED and CPU usage LED
922 functions. You may choose to use both, but the Timer LED function
923 will overrule the CPU usage LED.
925 config ALIGNMENT_TRAP
927 depends on CPU_CP15_MMU
928 default y if !ARCH_EBSA110
930 ARM processors cannot fetch/store information which is not
931 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
932 address divisible by 4. On 32-bit ARM processors, these non-aligned
933 fetch/store instructions will be emulated in software if you say
934 here, which has a severe performance impact. This is necessary for
935 correct operation of some network protocols. With an IP-only
936 configuration it is safe to say N, otherwise say Y.
942 # Compressed boot loader in ROM. Yes, we really want to ask about
943 # TEXT and BSS so we preserve their values in the config files.
944 config ZBOOT_ROM_TEXT
945 hex "Compressed ROM boot loader base address"
948 The physical address at which the ROM-able zImage is to be
949 placed in the target. Platforms which normally make use of
950 ROM-able zImage formats normally set this to a suitable
951 value in their defconfig file.
953 If ZBOOT_ROM is not enabled, this has no effect.
956 hex "Compressed ROM boot loader BSS address"
959 The base address of an area of read/write memory in the target
960 for the ROM-able zImage which must be available while the
961 decompressor is running. It must be large enough to hold the
962 entire decompressed kernel plus an additional 128 KiB.
963 Platforms which normally make use of ROM-able zImage formats
964 normally set this to a suitable value in their defconfig file.
966 If ZBOOT_ROM is not enabled, this has no effect.
969 bool "Compressed boot loader in ROM/flash"
970 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
972 Say Y here if you intend to execute your compressed kernel image
973 (zImage) directly from ROM or flash. If unsure, say N.
976 string "Default kernel command string"
979 On some architectures (EBSA110 and CATS), there is currently no way
980 for the boot loader to pass arguments to the kernel. For these
981 architectures, you should supply some command-line options at build
982 time by entering them here. As a minimum, you should specify the
983 memory size and the root device (e.g., mem=64M root=/dev/nfs).
986 bool "Kernel Execute-In-Place from ROM"
987 depends on !ZBOOT_ROM
989 Execute-In-Place allows the kernel to run from non-volatile storage
990 directly addressable by the CPU, such as NOR flash. This saves RAM
991 space since the text section of the kernel is not loaded from flash
992 to RAM. Read-write sections, such as the data section and stack,
993 are still copied to RAM. The XIP kernel is not compressed since
994 it has to run directly from flash, so it will take more space to
995 store it. The flash address used to link the kernel object files,
996 and for storing it, is configuration dependent. Therefore, if you
997 say Y here, you must know the proper physical address where to
998 store the kernel image depending on your own flash memory usage.
1000 Also note that the make target becomes "make xipImage" rather than
1001 "make zImage" or "make Image". The final kernel binary to put in
1002 ROM memory will be arch/arm/boot/xipImage.
1006 config XIP_PHYS_ADDR
1007 hex "XIP Kernel Physical Location"
1008 depends on XIP_KERNEL
1009 default "0x00080000"
1011 This is the physical address in your flash memory the kernel will
1012 be linked for and stored to. This address is dependent on your
1016 bool "Kexec system call (EXPERIMENTAL)"
1017 depends on EXPERIMENTAL
1019 kexec is a system call that implements the ability to shutdown your
1020 current kernel, and to start another kernel. It is like a reboot
1021 but it is independent of the system firmware. And like a reboot
1022 you can start any kernel with it, not just Linux.
1024 It is an ongoing process to be certain the hardware in a machine
1025 is properly shutdown, so do not be surprised if this code does not
1026 initially work for you. It may help to enable device hotplugging
1030 bool "Export atags in procfs"
1034 Should the atags used to boot the kernel be exported in an "atags"
1035 file in procfs. Useful with kexec.
1039 menu "CPU Power Management"
1041 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1043 source "drivers/cpufreq/Kconfig"
1045 config CPU_FREQ_SA1100
1047 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1050 config CPU_FREQ_SA1110
1052 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1055 config CPU_FREQ_INTEGRATOR
1056 tristate "CPUfreq driver for ARM Integrator CPUs"
1057 depends on ARCH_INTEGRATOR && CPU_FREQ
1060 This enables the CPUfreq driver for ARM Integrator CPUs.
1062 For details, take a look at <file:Documentation/cpu-freq>.
1067 tristate "CPUfreq driver for i.MX CPUs"
1068 depends on ARCH_IMX && CPU_FREQ
1071 This enables the CPUfreq driver for i.MX CPUs.
1077 depends on CPU_FREQ && ARCH_PXA && PXA25x
1079 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1083 source "drivers/cpuidle/Kconfig"
1087 menu "Floating point emulation"
1089 comment "At least one emulation must be selected"
1092 bool "NWFPE math emulation"
1093 depends on !AEABI || OABI_COMPAT
1095 Say Y to include the NWFPE floating point emulator in the kernel.
1096 This is necessary to run most binaries. Linux does not currently
1097 support floating point hardware so you need to say Y here even if
1098 your machine has an FPA or floating point co-processor podule.
1100 You may say N here if you are going to load the Acorn FPEmulator
1101 early in the bootup.
1104 bool "Support extended precision"
1105 depends on FPE_NWFPE
1107 Say Y to include 80-bit support in the kernel floating-point
1108 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1109 Note that gcc does not generate 80-bit operations by default,
1110 so in most cases this option only enlarges the size of the
1111 floating point emulator without any good reason.
1113 You almost surely want to say N here.
1116 bool "FastFPE math emulation (EXPERIMENTAL)"
1117 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1119 Say Y here to include the FAST floating point emulator in the kernel.
1120 This is an experimental much faster emulator which now also has full
1121 precision for the mantissa. It does not support any exceptions.
1122 It is very simple, and approximately 3-6 times faster than NWFPE.
1124 It should be sufficient for most programs. It may be not suitable
1125 for scientific calculations, but you have to check this for yourself.
1126 If you do not feel you need a faster FP emulation you should better
1130 bool "VFP-format floating point maths"
1131 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1133 Say Y to include VFP support code in the kernel. This is needed
1134 if your hardware includes a VFP unit.
1136 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1137 release notes and additional status information.
1139 Say N if your target does not have VFP hardware.
1147 bool "Advanced SIMD (NEON) Extension support"
1148 depends on VFPv3 && CPU_V7
1150 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1155 menu "Userspace binary formats"
1157 source "fs/Kconfig.binfmt"
1160 tristate "RISC OS personality"
1163 Say Y here to include the kernel code necessary if you want to run
1164 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1165 experimental; if this sounds frightening, say N and sleep in peace.
1166 You can also say M here to compile this support as a module (which
1167 will be called arthur).
1171 menu "Power management options"
1173 source "kernel/power/Kconfig"
1175 config ARCH_SUSPEND_POSSIBLE
1180 source "net/Kconfig"
1182 menu "Device Drivers"
1184 source "drivers/base/Kconfig"
1186 source "drivers/connector/Kconfig"
1188 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1189 source "drivers/mtd/Kconfig"
1192 source "drivers/parport/Kconfig"
1194 source "drivers/pnp/Kconfig"
1196 source "drivers/block/Kconfig"
1198 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1200 source "drivers/misc/Kconfig"
1202 source "drivers/ide/Kconfig"
1204 source "drivers/scsi/Kconfig"
1206 source "drivers/ata/Kconfig"
1208 source "drivers/md/Kconfig"
1210 source "drivers/message/fusion/Kconfig"
1212 source "drivers/ieee1394/Kconfig"
1214 source "drivers/message/i2o/Kconfig"
1216 source "drivers/net/Kconfig"
1218 source "drivers/isdn/Kconfig"
1220 # input before char - char/joystick depends on it. As does USB.
1222 source "drivers/input/Kconfig"
1224 source "drivers/char/Kconfig"
1226 source "drivers/i2c/Kconfig"
1228 source "drivers/spi/Kconfig"
1230 source "drivers/gpio/Kconfig"
1232 source "drivers/w1/Kconfig"
1234 source "drivers/power/Kconfig"
1236 source "drivers/hwmon/Kconfig"
1238 source "drivers/thermal/Kconfig"
1240 source "drivers/watchdog/Kconfig"
1242 source "drivers/ssb/Kconfig"
1244 #source "drivers/l3/Kconfig"
1246 source "drivers/mfd/Kconfig"
1248 source "drivers/media/Kconfig"
1250 source "drivers/video/Kconfig"
1252 source "sound/Kconfig"
1254 source "drivers/hid/Kconfig"
1256 source "drivers/usb/Kconfig"
1258 source "drivers/mmc/Kconfig"
1260 source "drivers/memstick/Kconfig"
1262 source "drivers/accessibility/Kconfig"
1264 source "drivers/leds/Kconfig"
1266 source "drivers/rtc/Kconfig"
1268 source "drivers/dma/Kconfig"
1270 source "drivers/dca/Kconfig"
1272 source "drivers/auxdisplay/Kconfig"
1274 source "drivers/regulator/Kconfig"
1276 source "drivers/uio/Kconfig"
1282 source "arch/arm/Kconfig.debug"
1284 source "security/Kconfig"
1286 source "crypto/Kconfig"
1288 source "lib/Kconfig"