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
163 config OPROFILE_ARMV6
165 depends on CPU_V6 && !SMP
166 select OPROFILE_ARM11_CORE
168 config OPROFILE_MPCORE
170 depends on CPU_V6 && SMP
171 select OPROFILE_ARM11_CORE
173 config OPROFILE_ARM11_CORE
176 config OPROFILE_ARMV7
178 depends on CPU_V7 && !SMP
185 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
186 default DRAM_BASE if REMAP_VECTORS_TO_RAM
189 The base address of exception vectors.
191 source "init/Kconfig"
193 source "kernel/Kconfig.freezer"
198 prompt "ARM system type"
199 default ARCH_VERSATILE
202 bool "Agilent AAEC-2000 based"
206 This enables support for systems based on the Agilent AAEC-2000
208 config ARCH_INTEGRATOR
209 bool "ARM Ltd. Integrator family"
214 Support for ARM's Integrator platform.
217 bool "ARM Ltd. RealView family"
222 select GENERIC_CLOCKEVENTS
224 This enables support for ARM Ltd RealView boards.
226 config ARCH_VERSATILE
227 bool "ARM Ltd. Versatile family"
233 select GENERIC_CLOCKEVENTS
235 This enables support for ARM Ltd Versatile board.
242 This enables support for systems based on the Atmel AT91RM9200,
243 AT91SAM9 and AT91CAP9 processors.
246 bool "Cirrus CL-PS7500FE"
250 select ARCH_SPARSEMEM_ENABLE
252 Support for the Cirrus Logic PS7500FE system-on-a-chip.
255 bool "Cirrus Logic CLPS711x/EP721x-based"
257 Support for Cirrus Logic 711x/721x based boards.
264 This is an evaluation board for the StrongARM processor available
265 from Digital. It has limited hardware on-board, including an
266 Ethernet interface, two PCMCIA sockets, two serial ports and a
275 select ARCH_REQUIRE_GPIOLIB
277 This enables support for the Cirrus EP93xx series of CPUs.
279 config ARCH_FOOTBRIDGE
283 Support for systems based on the DC21285 companion chip
284 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
287 bool "Hilscher NetX based"
290 This enables support for systems based on the Hilscher NetX Soc
293 bool "Hynix HMS720x-based"
296 This enables support for systems based on the Hynix HMS720x
302 select GENERIC_CLOCKEVENTS
304 Support for Motorola's i.MX family of processors (MX1, MXL).
311 select ARCH_SUPPORTS_MSI
314 Support for Intel's IOP13XX (XScale) family of processors.
322 select ARCH_REQUIRE_GPIOLIB
324 Support for Intel's 80219 and IOP32X (XScale) family of
333 select ARCH_REQUIRE_GPIOLIB
335 Support for Intel's IOP33X (XScale) family of processors.
342 Support for Intel's IXP23xx (XScale) family of processors.
345 bool "IXP2400/2800-based"
349 Support for Intel's IXP2400/2800 (XScale) family of processors.
356 select GENERIC_CLOCKEVENTS
357 select DMABOUNCE if PCI
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),
442 Orion-2 (5281), Orion-1-90 (6183).
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
472 select ARCH_SPARSEMEM_ENABLE
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_SPARSEMEM_ENABLE
484 select GENERIC_CLOCKEVENTS
487 select ARCH_REQUIRE_GPIOLIB
489 Support for StrongARM 11x0 based boards.
492 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
496 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
497 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
498 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>).
512 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
513 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
515 Say Y here for systems based on one of the Sharp LH7A40X
516 System on a Chip processors. These CPUs include an ARM922T
517 core with a wide array of integrated devices for
518 hand-held and low-power applications.
523 select GENERIC_CLOCKEVENTS
525 select ARCH_REQUIRE_GPIOLIB
529 Support for TI's DaVinci platform.
535 select ARCH_REQUIRE_GPIOLIB
537 select GENERIC_CLOCKEVENTS
539 Support for TI's OMAP platform (OMAP1 and OMAP2).
544 select GENERIC_CLOCKEVENTS
546 Support for Qualcomm MSM7K based systems. This runs on the ARM11
547 apps processor of the MSM7K and depends on a shared memory
548 interface to the ARM9 modem processor which runs the baseband stack
549 and controls some vital subsystems (clock and power control, etc).
553 source "arch/arm/mach-clps711x/Kconfig"
555 source "arch/arm/mach-ep93xx/Kconfig"
557 source "arch/arm/mach-footbridge/Kconfig"
559 source "arch/arm/mach-integrator/Kconfig"
561 source "arch/arm/mach-iop32x/Kconfig"
563 source "arch/arm/mach-iop33x/Kconfig"
565 source "arch/arm/mach-iop13xx/Kconfig"
567 source "arch/arm/mach-ixp4xx/Kconfig"
569 source "arch/arm/mach-ixp2000/Kconfig"
571 source "arch/arm/mach-ixp23xx/Kconfig"
573 source "arch/arm/mach-loki/Kconfig"
575 source "arch/arm/mach-mv78xx0/Kconfig"
577 source "arch/arm/mach-pxa/Kconfig"
579 source "arch/arm/mach-sa1100/Kconfig"
581 source "arch/arm/plat-omap/Kconfig"
583 source "arch/arm/mach-omap1/Kconfig"
585 source "arch/arm/mach-omap2/Kconfig"
587 source "arch/arm/mach-orion5x/Kconfig"
589 source "arch/arm/mach-kirkwood/Kconfig"
591 source "arch/arm/plat-s3c24xx/Kconfig"
592 source "arch/arm/plat-s3c/Kconfig"
595 source "arch/arm/mach-s3c2400/Kconfig"
596 source "arch/arm/mach-s3c2410/Kconfig"
597 source "arch/arm/mach-s3c2412/Kconfig"
598 source "arch/arm/mach-s3c2440/Kconfig"
599 source "arch/arm/mach-s3c2442/Kconfig"
600 source "arch/arm/mach-s3c2443/Kconfig"
603 source "arch/arm/mach-lh7a40x/Kconfig"
605 source "arch/arm/mach-imx/Kconfig"
607 source "arch/arm/mach-h720x/Kconfig"
609 source "arch/arm/mach-versatile/Kconfig"
611 source "arch/arm/mach-aaec2000/Kconfig"
613 source "arch/arm/mach-realview/Kconfig"
615 source "arch/arm/mach-at91/Kconfig"
617 source "arch/arm/plat-mxc/Kconfig"
619 source "arch/arm/mach-netx/Kconfig"
621 source "arch/arm/mach-ns9xxx/Kconfig"
623 source "arch/arm/mach-davinci/Kconfig"
625 source "arch/arm/mach-ks8695/Kconfig"
627 source "arch/arm/mach-msm/Kconfig"
629 # Definitions to make life easier
639 source arch/arm/mm/Kconfig
642 bool "Enable iWMMXt support"
643 depends on CPU_XSCALE || CPU_XSC3
644 default y if PXA27x || PXA3xx
646 Enable support for iWMMXt context switching at run time if
647 running on a CPU that supports it.
649 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
652 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
656 source "arch/arm/Kconfig-nommu"
661 source "arch/arm/common/Kconfig"
663 config FORCE_MAX_ZONEORDER
676 Find out whether you have ISA slots on your motherboard. ISA is the
677 name of a bus system, i.e. the way the CPU talks to the other stuff
678 inside your box. Other bus systems are PCI, EISA, MicroChannel
679 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
680 newer boards don't support it. If you have ISA, say Y, otherwise N.
682 # Select ISA DMA controller support
687 # Select ISA DMA interface
692 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
694 Find out whether you have a PCI motherboard. PCI is the name of a
695 bus system, i.e. the way the CPU talks to the other stuff inside
696 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
697 VESA. If you have PCI, say Y, otherwise N.
702 # Select the host bridge type
703 config PCI_HOST_VIA82C505
705 depends on PCI && ARCH_SHARK
708 config PCI_HOST_ITE8152
710 depends on PCI && MACH_ARMCORE
714 source "drivers/pci/Kconfig"
716 source "drivers/pcmcia/Kconfig"
720 menu "Kernel Features"
722 source "kernel/time/Kconfig"
725 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
726 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
727 select USE_GENERIC_SMP_HELPERS
729 This enables support for systems with more than one CPU. If you have
730 a system with only one CPU, like most personal computers, say N. If
731 you have a system with more than one CPU, say Y.
733 If you say N here, the kernel will run on single and multiprocessor
734 machines, but will use only one CPU of a multiprocessor machine. If
735 you say Y here, the kernel will run on many, but not all, single
736 processor machines. On a single processor machine, the kernel will
737 run faster if you say N here.
739 See also <file:Documentation/i386/IO-APIC.txt>,
740 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
741 <http://www.linuxdoc.org/docs.html#howto>.
743 If you don't know what to do here, say N.
746 prompt "Memory split"
749 Select the desired split between kernel and user memory.
751 If you are not absolutely sure what you are doing, leave this
755 bool "3G/1G user/kernel split"
757 bool "2G/2G user/kernel split"
759 bool "1G/3G user/kernel split"
764 default 0x40000000 if VMSPLIT_1G
765 default 0x80000000 if VMSPLIT_2G
769 int "Maximum number of CPUs (2-32)"
775 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
776 depends on SMP && HOTPLUG && EXPERIMENTAL
778 Say Y here to experiment with turning CPUs off and on. CPUs
779 can be controlled through /sys/devices/system/cpu.
782 bool "Use local timer interrupts"
783 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
786 Enable support for local timers on SMP platforms, rather then the
787 legacy IPI broadcast method. Local timers allows the system
788 accounting to be spread across the timer interval, preventing a
789 "thundering herd" at every timer tick.
792 bool "Preemptible Kernel (EXPERIMENTAL)"
793 depends on EXPERIMENTAL
795 This option reduces the latency of the kernel when reacting to
796 real-time or interactive events by allowing a low priority process to
797 be preempted even if it is in kernel mode executing a system call.
798 This allows applications to run more reliably even when the system is
801 Say Y here if you are building a kernel for a desktop, embedded
802 or real-time system. Say N if you are unsure.
806 default 128 if ARCH_L7200
807 default 200 if ARCH_EBSA110 || ARCH_S3C2410
808 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
809 default AT91_TIMER_HZ if ARCH_AT91
813 bool "Use the ARM EABI to compile the kernel"
815 This option allows for the kernel to be compiled using the latest
816 ARM ABI (aka EABI). This is only useful if you are using a user
817 space environment that is also compiled with EABI.
819 Since there are major incompatibilities between the legacy ABI and
820 EABI, especially with regard to structure member alignment, this
821 option also changes the kernel syscall calling convention to
822 disambiguate both ABIs and allow for backward compatibility support
823 (selected with CONFIG_OABI_COMPAT).
825 To use this you need GCC version 4.0.0 or later.
828 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
829 depends on AEABI && EXPERIMENTAL
832 This option preserves the old syscall interface along with the
833 new (ARM EABI) one. It also provides a compatibility layer to
834 intercept syscalls that have structure arguments which layout
835 in memory differs between the legacy ABI and the new ARM EABI
836 (only for non "thumb" binaries). This option adds a tiny
837 overhead to all syscalls and produces a slightly larger kernel.
838 If you know you'll be using only pure EABI user space then you
839 can say N here. If this option is not selected and you attempt
840 to execute a legacy ABI binary then the result will be
841 UNPREDICTABLE (in fact it can be predicted that it won't work
842 at all). If in doubt say Y.
844 config ARCH_FLATMEM_HAS_HOLES
849 # Discontigmem is deprecated
850 config ARCH_DISCONTIGMEM_ENABLE
853 config ARCH_SPARSEMEM_ENABLE
856 config ARCH_SPARSEMEM_DEFAULT
857 def_bool ARCH_SPARSEMEM_ENABLE
859 config ARCH_SELECT_MEMORY_MODEL
860 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
864 default "4" if ARCH_LH7A40X
866 depends on NEED_MULTIPLE_NODES
871 bool "Timer and CPU usage LEDs"
872 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
873 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
874 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
875 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
876 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
877 ARCH_AT91 || ARCH_DAVINCI || \
878 ARCH_KS8695 || MACH_RD88F5182
880 If you say Y here, the LEDs on your machine will be used
881 to provide useful information about your current system status.
883 If you are compiling a kernel for a NetWinder or EBSA-285, you will
884 be able to select which LEDs are active using the options below. If
885 you are compiling a kernel for the EBSA-110 or the LART however, the
886 red LED will simply flash regularly to indicate that the system is
887 still functional. It is safe to say Y here if you have a CATS
888 system, but the driver will do nothing.
891 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
892 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
893 || MACH_OMAP_PERSEUS2
895 depends on !GENERIC_CLOCKEVENTS
896 default y if ARCH_EBSA110
898 If you say Y here, one of the system LEDs (the green one on the
899 NetWinder, the amber one on the EBSA285, or the red one on the LART)
900 will flash regularly to indicate that the system is still
901 operational. This is mainly useful to kernel hackers who are
902 debugging unstable kernels.
904 The LART uses the same LED for both Timer LED and CPU usage LED
905 functions. You may choose to use both, but the Timer LED function
906 will overrule the CPU usage LED.
909 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
911 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
912 || MACH_OMAP_PERSEUS2
915 If you say Y here, the red LED will be used to give a good real
916 time indication of CPU usage, by lighting whenever the idle task
917 is not currently executing.
919 The LART uses the same LED for both Timer LED and CPU usage LED
920 functions. You may choose to use both, but the Timer LED function
921 will overrule the CPU usage LED.
923 config ALIGNMENT_TRAP
925 depends on CPU_CP15_MMU
926 default y if !ARCH_EBSA110
928 ARM processors cannot fetch/store information which is not
929 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
930 address divisible by 4. On 32-bit ARM processors, these non-aligned
931 fetch/store instructions will be emulated in software if you say
932 here, which has a severe performance impact. This is necessary for
933 correct operation of some network protocols. With an IP-only
934 configuration it is safe to say N, otherwise say Y.
940 # Compressed boot loader in ROM. Yes, we really want to ask about
941 # TEXT and BSS so we preserve their values in the config files.
942 config ZBOOT_ROM_TEXT
943 hex "Compressed ROM boot loader base address"
946 The physical address at which the ROM-able zImage is to be
947 placed in the target. Platforms which normally make use of
948 ROM-able zImage formats normally set this to a suitable
949 value in their defconfig file.
951 If ZBOOT_ROM is not enabled, this has no effect.
954 hex "Compressed ROM boot loader BSS address"
957 The base address of an area of read/write memory in the target
958 for the ROM-able zImage which must be available while the
959 decompressor is running. It must be large enough to hold the
960 entire decompressed kernel plus an additional 128 KiB.
961 Platforms which normally make use of ROM-able zImage formats
962 normally set this to a suitable value in their defconfig file.
964 If ZBOOT_ROM is not enabled, this has no effect.
967 bool "Compressed boot loader in ROM/flash"
968 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
970 Say Y here if you intend to execute your compressed kernel image
971 (zImage) directly from ROM or flash. If unsure, say N.
974 string "Default kernel command string"
977 On some architectures (EBSA110 and CATS), there is currently no way
978 for the boot loader to pass arguments to the kernel. For these
979 architectures, you should supply some command-line options at build
980 time by entering them here. As a minimum, you should specify the
981 memory size and the root device (e.g., mem=64M root=/dev/nfs).
984 bool "Kernel Execute-In-Place from ROM"
985 depends on !ZBOOT_ROM
987 Execute-In-Place allows the kernel to run from non-volatile storage
988 directly addressable by the CPU, such as NOR flash. This saves RAM
989 space since the text section of the kernel is not loaded from flash
990 to RAM. Read-write sections, such as the data section and stack,
991 are still copied to RAM. The XIP kernel is not compressed since
992 it has to run directly from flash, so it will take more space to
993 store it. The flash address used to link the kernel object files,
994 and for storing it, is configuration dependent. Therefore, if you
995 say Y here, you must know the proper physical address where to
996 store the kernel image depending on your own flash memory usage.
998 Also note that the make target becomes "make xipImage" rather than
999 "make zImage" or "make Image". The final kernel binary to put in
1000 ROM memory will be arch/arm/boot/xipImage.
1004 config XIP_PHYS_ADDR
1005 hex "XIP Kernel Physical Location"
1006 depends on XIP_KERNEL
1007 default "0x00080000"
1009 This is the physical address in your flash memory the kernel will
1010 be linked for and stored to. This address is dependent on your
1014 bool "Kexec system call (EXPERIMENTAL)"
1015 depends on EXPERIMENTAL
1017 kexec is a system call that implements the ability to shutdown your
1018 current kernel, and to start another kernel. It is like a reboot
1019 but it is independent of the system firmware. And like a reboot
1020 you can start any kernel with it, not just Linux.
1022 It is an ongoing process to be certain the hardware in a machine
1023 is properly shutdown, so do not be surprised if this code does not
1024 initially work for you. It may help to enable device hotplugging
1028 bool "Export atags in procfs"
1032 Should the atags used to boot the kernel be exported in an "atags"
1033 file in procfs. Useful with kexec.
1037 menu "CPU Power Management"
1039 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1041 source "drivers/cpufreq/Kconfig"
1043 config CPU_FREQ_SA1100
1045 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1048 config CPU_FREQ_SA1110
1050 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1053 config CPU_FREQ_INTEGRATOR
1054 tristate "CPUfreq driver for ARM Integrator CPUs"
1055 depends on ARCH_INTEGRATOR && CPU_FREQ
1058 This enables the CPUfreq driver for ARM Integrator CPUs.
1060 For details, take a look at <file:Documentation/cpu-freq>.
1065 tristate "CPUfreq driver for i.MX CPUs"
1066 depends on ARCH_IMX && CPU_FREQ
1069 This enables the CPUfreq driver for i.MX CPUs.
1075 depends on CPU_FREQ && ARCH_PXA && PXA25x
1077 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1081 source "drivers/cpuidle/Kconfig"
1085 menu "Floating point emulation"
1087 comment "At least one emulation must be selected"
1090 bool "NWFPE math emulation"
1091 depends on !AEABI || OABI_COMPAT
1093 Say Y to include the NWFPE floating point emulator in the kernel.
1094 This is necessary to run most binaries. Linux does not currently
1095 support floating point hardware so you need to say Y here even if
1096 your machine has an FPA or floating point co-processor podule.
1098 You may say N here if you are going to load the Acorn FPEmulator
1099 early in the bootup.
1102 bool "Support extended precision"
1103 depends on FPE_NWFPE
1105 Say Y to include 80-bit support in the kernel floating-point
1106 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1107 Note that gcc does not generate 80-bit operations by default,
1108 so in most cases this option only enlarges the size of the
1109 floating point emulator without any good reason.
1111 You almost surely want to say N here.
1114 bool "FastFPE math emulation (EXPERIMENTAL)"
1115 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1117 Say Y here to include the FAST floating point emulator in the kernel.
1118 This is an experimental much faster emulator which now also has full
1119 precision for the mantissa. It does not support any exceptions.
1120 It is very simple, and approximately 3-6 times faster than NWFPE.
1122 It should be sufficient for most programs. It may be not suitable
1123 for scientific calculations, but you have to check this for yourself.
1124 If you do not feel you need a faster FP emulation you should better
1128 bool "VFP-format floating point maths"
1129 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1131 Say Y to include VFP support code in the kernel. This is needed
1132 if your hardware includes a VFP unit.
1134 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1135 release notes and additional status information.
1137 Say N if your target does not have VFP hardware.
1145 bool "Advanced SIMD (NEON) Extension support"
1146 depends on VFPv3 && CPU_V7
1148 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1153 menu "Userspace binary formats"
1155 source "fs/Kconfig.binfmt"
1158 tristate "RISC OS personality"
1161 Say Y here to include the kernel code necessary if you want to run
1162 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1163 experimental; if this sounds frightening, say N and sleep in peace.
1164 You can also say M here to compile this support as a module (which
1165 will be called arthur).
1169 menu "Power management options"
1171 source "kernel/power/Kconfig"
1173 config ARCH_SUSPEND_POSSIBLE
1178 source "net/Kconfig"
1180 menu "Device Drivers"
1182 source "drivers/base/Kconfig"
1184 source "drivers/connector/Kconfig"
1186 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1187 source "drivers/mtd/Kconfig"
1190 source "drivers/parport/Kconfig"
1192 source "drivers/pnp/Kconfig"
1194 source "drivers/block/Kconfig"
1196 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1198 source "drivers/misc/Kconfig"
1200 source "drivers/ide/Kconfig"
1202 source "drivers/scsi/Kconfig"
1204 source "drivers/ata/Kconfig"
1206 source "drivers/md/Kconfig"
1208 source "drivers/message/fusion/Kconfig"
1210 source "drivers/ieee1394/Kconfig"
1212 source "drivers/message/i2o/Kconfig"
1214 source "drivers/net/Kconfig"
1216 source "drivers/isdn/Kconfig"
1218 # input before char - char/joystick depends on it. As does USB.
1220 source "drivers/input/Kconfig"
1222 source "drivers/char/Kconfig"
1224 source "drivers/i2c/Kconfig"
1226 source "drivers/spi/Kconfig"
1228 source "drivers/gpio/Kconfig"
1230 source "drivers/w1/Kconfig"
1232 source "drivers/power/Kconfig"
1234 source "drivers/hwmon/Kconfig"
1236 source "drivers/thermal/Kconfig"
1238 source "drivers/watchdog/Kconfig"
1240 source "drivers/ssb/Kconfig"
1242 #source "drivers/l3/Kconfig"
1244 source "drivers/mfd/Kconfig"
1246 source "drivers/media/Kconfig"
1248 source "drivers/video/Kconfig"
1250 source "sound/Kconfig"
1252 source "drivers/hid/Kconfig"
1254 source "drivers/usb/Kconfig"
1256 source "drivers/uwb/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"