2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
14 select SYS_SUPPORTS_APM_EMULATION
17 select HAVE_KPROBES if (!XIP_KERNEL)
18 select HAVE_KRETPROBES if (HAVE_KPROBES)
19 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
20 select HAVE_GENERIC_DMA_COHERENT
22 The ARM series is a line of low-power-consumption RISC chip designs
23 licensed by ARM Ltd and targeted at embedded applications and
24 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
25 manufactured, but legacy ARM-based PC hardware remains popular in
26 Europe. There is an ARM Linux project with a web page at
27 <http://www.arm.linux.org.uk/>.
32 config SYS_SUPPORTS_APM_EMULATION
43 config GENERIC_CLOCKEVENTS
47 config GENERIC_CLOCKEVENTS_BROADCAST
49 depends on GENERIC_CLOCKEVENTS
50 default y if SMP && !LOCAL_TIMERS
63 The Extended Industry Standard Architecture (EISA) bus was
64 developed as an open alternative to the IBM MicroChannel bus.
66 The EISA bus provided some of the features of the IBM MicroChannel
67 bus while maintaining backward compatibility with cards made for
68 the older ISA bus. The EISA bus saw limited use between 1988 and
69 1995 when it was made obsolete by the PCI bus.
71 Say Y here if you are building a kernel for an EISA-based machine.
81 MicroChannel Architecture is found in some IBM PS/2 machines and
82 laptops. It is a bus system similar to PCI or ISA. See
83 <file:Documentation/mca.txt> (and especially the web page given
84 there) before attempting to build an MCA bus kernel.
86 config GENERIC_HARDIRQS
90 config STACKTRACE_SUPPORT
94 config HAVE_LATENCYTOP_SUPPORT
99 config LOCKDEP_SUPPORT
103 config TRACE_IRQFLAGS_SUPPORT
107 config HARDIRQS_SW_RESEND
111 config GENERIC_IRQ_PROBE
115 config GENERIC_LOCKBREAK
118 depends on SMP && PREEMPT
120 config RWSEM_GENERIC_SPINLOCK
124 config RWSEM_XCHGADD_ALGORITHM
127 config ARCH_HAS_ILOG2_U32
131 config ARCH_HAS_ILOG2_U64
135 config GENERIC_HWEIGHT
139 config GENERIC_CALIBRATE_DELAY
143 config ARCH_MAY_HAVE_PC_FDC
149 config GENERIC_ISA_DMA
158 config GENERIC_HARDIRQS_NO__DO_IRQ
164 config OPROFILE_ARMV6
166 depends on CPU_V6 && !SMP
167 select OPROFILE_ARM11_CORE
169 config OPROFILE_MPCORE
171 depends on CPU_V6 && SMP
172 select OPROFILE_ARM11_CORE
174 config OPROFILE_ARM11_CORE
177 config OPROFILE_ARMV7
179 depends on CPU_V7 && !SMP
186 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
187 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 The base address of exception vectors.
192 source "init/Kconfig"
194 source "kernel/Kconfig.freezer"
199 prompt "ARM system type"
200 default ARCH_VERSATILE
203 bool "Agilent AAEC-2000 based"
208 This enables support for systems based on the Agilent AAEC-2000
210 config ARCH_INTEGRATOR
211 bool "ARM Ltd. Integrator family"
217 Support for ARM's Integrator platform.
220 bool "ARM Ltd. RealView family"
226 select GENERIC_CLOCKEVENTS
228 This enables support for ARM Ltd RealView boards.
230 config ARCH_VERSATILE
231 bool "ARM Ltd. Versatile family"
238 select GENERIC_CLOCKEVENTS
240 This enables support for ARM Ltd Versatile board.
247 This enables support for systems based on the Atmel AT91RM9200,
248 AT91SAM9 and AT91CAP9 processors.
251 bool "Cirrus Logic CLPS711x/EP721x-based"
254 Support for Cirrus Logic 711x/721x based boards.
262 This is an evaluation board for the StrongARM processor available
263 from Digital. It has limited hardware on-board, including an
264 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
284 Support for systems based on the DC21285 companion chip
285 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
288 bool "Hilscher NetX based"
292 This enables support for systems based on the Hilscher NetX Soc
295 bool "Hynix HMS720x-based"
299 This enables support for systems based on the Hynix HMS720x
306 select GENERIC_CLOCKEVENTS
308 Support for Motorola's i.MX family of processors (MX1, MXL).
316 select ARCH_SUPPORTS_MSI
319 Support for Intel's IOP13XX (XScale) family of processors.
328 select ARCH_REQUIRE_GPIOLIB
330 Support for Intel's 80219 and IOP32X (XScale) family of
340 select ARCH_REQUIRE_GPIOLIB
342 Support for Intel's IOP33X (XScale) family of processors.
350 Support for Intel's IXP23xx (XScale) family of processors.
353 bool "IXP2400/2800-based"
358 Support for Intel's IXP2400/2800 (XScale) family of processors.
366 select GENERIC_CLOCKEVENTS
367 select DMABOUNCE if PCI
369 Support for Intel's IXP4XX (XScale) family of processors.
376 Say Y here if you intend to run this kernel on a LinkUp Systems
377 L7200 Software Development Board which uses an ARM720T processor.
378 Information on this board can be obtained at:
380 <http://www.linkupsys.com/>
382 If you have any questions or comments about the Linux kernel port
383 to this board, send e-mail to <sjhill@cotw.com>.
386 bool "Marvell Kirkwood"
390 select GENERIC_CLOCKEVENTS
393 Support for the following Marvell Kirkwood series SoCs:
394 88F6180, 88F6192 and 88F6281.
397 bool "Micrel/Kendin KS8695"
401 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
402 System-on-Chip devices.
405 bool "NetSilicon NS9xxx"
409 select GENERIC_CLOCKEVENTS
412 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
415 <http://www.digi.com/products/microprocessors/index.jsp>
418 bool "Marvell Loki (88RC8480)"
421 select GENERIC_CLOCKEVENTS
424 Support for the Marvell Loki (88RC8480) SoC.
427 bool "Marvell MV78xx0"
431 select GENERIC_CLOCKEVENTS
434 Support for the following Marvell MV78xx0 series SoCs:
438 bool "Freescale MXC/iMX-based"
440 select GENERIC_CLOCKEVENTS
443 select ARCH_REQUIRE_GPIOLIB
445 Support for Freescale MXC/iMX-based family of processors
454 select GENERIC_CLOCKEVENTS
457 Support for the following Marvell Orion 5x series SoCs:
458 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
459 Orion-2 (5281), Orion-1-90 (6183).
462 bool "Philips Nexperia PNX4008 Mobile"
466 This enables support for Philips PNX4008 mobile platform.
469 bool "PXA2xx/PXA3xx-based"
475 select ARCH_REQUIRE_GPIOLIB
477 select GENERIC_CLOCKEVENTS
480 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
487 select ARCH_MAY_HAVE_PC_FDC
488 select HAVE_PATA_PLATFORM
491 select ARCH_SPARSEMEM_ENABLE
493 On the Acorn Risc-PC, Linux can support the internal IDE disk and
494 CD-ROM interface, serial and parallel port, and the floppy drive.
500 select ARCH_SPARSEMEM_ENABLE
504 select GENERIC_CLOCKEVENTS
507 select ARCH_REQUIRE_GPIOLIB
509 Support for StrongARM 11x0 based boards.
512 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
516 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
517 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
518 the Samsung SMDK2410 development board (and derivatives).
528 Support for the StrongARM based Digital DNARD machine, also known
529 as "Shark" (<http://www.shark-linux.de/shark.html>).
534 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
535 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
537 Say Y here for systems based on one of the Sharp LH7A40X
538 System on a Chip processors. These CPUs include an ARM922T
539 core with a wide array of integrated devices for
540 hand-held and low-power applications.
546 select GENERIC_CLOCKEVENTS
548 select ARCH_REQUIRE_GPIOLIB
552 Support for TI's DaVinci platform.
558 select ARCH_REQUIRE_GPIOLIB
560 select GENERIC_CLOCKEVENTS
562 Support for TI's OMAP platform (OMAP1 and OMAP2).
568 select GENERIC_CLOCKEVENTS
570 Support for Qualcomm MSM7K based systems. This runs on the ARM11
571 apps processor of the MSM7K and depends on a shared memory
572 interface to the ARM9 modem processor which runs the baseband stack
573 and controls some vital subsystems (clock and power control, etc).
577 source "arch/arm/mach-clps711x/Kconfig"
579 source "arch/arm/mach-ep93xx/Kconfig"
581 source "arch/arm/mach-footbridge/Kconfig"
583 source "arch/arm/mach-integrator/Kconfig"
585 source "arch/arm/mach-iop32x/Kconfig"
587 source "arch/arm/mach-iop33x/Kconfig"
589 source "arch/arm/mach-iop13xx/Kconfig"
591 source "arch/arm/mach-ixp4xx/Kconfig"
593 source "arch/arm/mach-ixp2000/Kconfig"
595 source "arch/arm/mach-ixp23xx/Kconfig"
597 source "arch/arm/mach-loki/Kconfig"
599 source "arch/arm/mach-mv78xx0/Kconfig"
601 source "arch/arm/mach-pxa/Kconfig"
603 source "arch/arm/mach-sa1100/Kconfig"
605 source "arch/arm/plat-omap/Kconfig"
607 source "arch/arm/mach-omap1/Kconfig"
609 source "arch/arm/mach-omap2/Kconfig"
611 source "arch/arm/mach-orion5x/Kconfig"
613 source "arch/arm/mach-kirkwood/Kconfig"
615 source "arch/arm/plat-s3c24xx/Kconfig"
616 source "arch/arm/plat-s3c/Kconfig"
619 source "arch/arm/mach-s3c2400/Kconfig"
620 source "arch/arm/mach-s3c2410/Kconfig"
621 source "arch/arm/mach-s3c2412/Kconfig"
622 source "arch/arm/mach-s3c2440/Kconfig"
623 source "arch/arm/mach-s3c2442/Kconfig"
624 source "arch/arm/mach-s3c2443/Kconfig"
627 source "arch/arm/mach-lh7a40x/Kconfig"
629 source "arch/arm/mach-imx/Kconfig"
631 source "arch/arm/mach-h720x/Kconfig"
633 source "arch/arm/mach-versatile/Kconfig"
635 source "arch/arm/mach-aaec2000/Kconfig"
637 source "arch/arm/mach-realview/Kconfig"
639 source "arch/arm/mach-at91/Kconfig"
641 source "arch/arm/plat-mxc/Kconfig"
643 source "arch/arm/mach-netx/Kconfig"
645 source "arch/arm/mach-ns9xxx/Kconfig"
647 source "arch/arm/mach-davinci/Kconfig"
649 source "arch/arm/mach-ks8695/Kconfig"
651 source "arch/arm/mach-msm/Kconfig"
653 # Definitions to make life easier
663 source arch/arm/mm/Kconfig
666 bool "Enable iWMMXt support"
667 depends on CPU_XSCALE || CPU_XSC3
668 default y if PXA27x || PXA3xx
670 Enable support for iWMMXt context switching at run time if
671 running on a CPU that supports it.
673 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
676 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
680 source "arch/arm/Kconfig-nommu"
685 source "arch/arm/common/Kconfig"
687 config FORCE_MAX_ZONEORDER
700 Find out whether you have ISA slots on your motherboard. ISA is the
701 name of a bus system, i.e. the way the CPU talks to the other stuff
702 inside your box. Other bus systems are PCI, EISA, MicroChannel
703 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
704 newer boards don't support it. If you have ISA, say Y, otherwise N.
706 # Select ISA DMA controller support
711 # Select ISA DMA interface
716 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
718 Find out whether you have a PCI motherboard. PCI is the name of a
719 bus system, i.e. the way the CPU talks to the other stuff inside
720 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
721 VESA. If you have PCI, say Y, otherwise N.
726 # Select the host bridge type
727 config PCI_HOST_VIA82C505
729 depends on PCI && ARCH_SHARK
732 config PCI_HOST_ITE8152
734 depends on PCI && MACH_ARMCORE
738 source "drivers/pci/Kconfig"
740 source "drivers/pcmcia/Kconfig"
744 menu "Kernel Features"
746 source "kernel/time/Kconfig"
749 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
750 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
751 select USE_GENERIC_SMP_HELPERS
753 This enables support for systems with more than one CPU. If you have
754 a system with only one CPU, like most personal computers, say N. If
755 you have a system with more than one CPU, say Y.
757 If you say N here, the kernel will run on single and multiprocessor
758 machines, but will use only one CPU of a multiprocessor machine. If
759 you say Y here, the kernel will run on many, but not all, single
760 processor machines. On a single processor machine, the kernel will
761 run faster if you say N here.
763 See also <file:Documentation/i386/IO-APIC.txt>,
764 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
765 <http://www.linuxdoc.org/docs.html#howto>.
767 If you don't know what to do here, say N.
770 prompt "Memory split"
773 Select the desired split between kernel and user memory.
775 If you are not absolutely sure what you are doing, leave this
779 bool "3G/1G user/kernel split"
781 bool "2G/2G user/kernel split"
783 bool "1G/3G user/kernel split"
788 default 0x40000000 if VMSPLIT_1G
789 default 0x80000000 if VMSPLIT_2G
793 int "Maximum number of CPUs (2-32)"
799 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
800 depends on SMP && HOTPLUG && EXPERIMENTAL
802 Say Y here to experiment with turning CPUs off and on. CPUs
803 can be controlled through /sys/devices/system/cpu.
806 bool "Use local timer interrupts"
807 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
810 Enable support for local timers on SMP platforms, rather then the
811 legacy IPI broadcast method. Local timers allows the system
812 accounting to be spread across the timer interval, preventing a
813 "thundering herd" at every timer tick.
816 bool "Preemptible Kernel (EXPERIMENTAL)"
817 depends on EXPERIMENTAL
819 This option reduces the latency of the kernel when reacting to
820 real-time or interactive events by allowing a low priority process to
821 be preempted even if it is in kernel mode executing a system call.
822 This allows applications to run more reliably even when the system is
825 Say Y here if you are building a kernel for a desktop, embedded
826 or real-time system. Say N if you are unsure.
830 default 128 if ARCH_L7200
831 default 200 if ARCH_EBSA110 || ARCH_S3C2410
832 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
833 default AT91_TIMER_HZ if ARCH_AT91
837 bool "Use the ARM EABI to compile the kernel"
839 This option allows for the kernel to be compiled using the latest
840 ARM ABI (aka EABI). This is only useful if you are using a user
841 space environment that is also compiled with EABI.
843 Since there are major incompatibilities between the legacy ABI and
844 EABI, especially with regard to structure member alignment, this
845 option also changes the kernel syscall calling convention to
846 disambiguate both ABIs and allow for backward compatibility support
847 (selected with CONFIG_OABI_COMPAT).
849 To use this you need GCC version 4.0.0 or later.
852 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
853 depends on AEABI && EXPERIMENTAL
856 This option preserves the old syscall interface along with the
857 new (ARM EABI) one. It also provides a compatibility layer to
858 intercept syscalls that have structure arguments which layout
859 in memory differs between the legacy ABI and the new ARM EABI
860 (only for non "thumb" binaries). This option adds a tiny
861 overhead to all syscalls and produces a slightly larger kernel.
862 If you know you'll be using only pure EABI user space then you
863 can say N here. If this option is not selected and you attempt
864 to execute a legacy ABI binary then the result will be
865 UNPREDICTABLE (in fact it can be predicted that it won't work
866 at all). If in doubt say Y.
868 config ARCH_FLATMEM_HAS_HOLES
873 # Discontigmem is deprecated
874 config ARCH_DISCONTIGMEM_ENABLE
877 config ARCH_SPARSEMEM_ENABLE
880 config ARCH_SPARSEMEM_DEFAULT
881 def_bool ARCH_SPARSEMEM_ENABLE
883 config ARCH_SELECT_MEMORY_MODEL
884 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
888 default "4" if ARCH_LH7A40X
890 depends on NEED_MULTIPLE_NODES
895 bool "Timer and CPU usage LEDs"
896 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
897 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
898 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
899 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
900 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
901 ARCH_AT91 || ARCH_DAVINCI || \
902 ARCH_KS8695 || MACH_RD88F5182
904 If you say Y here, the LEDs on your machine will be used
905 to provide useful information about your current system status.
907 If you are compiling a kernel for a NetWinder or EBSA-285, you will
908 be able to select which LEDs are active using the options below. If
909 you are compiling a kernel for the EBSA-110 or the LART however, the
910 red LED will simply flash regularly to indicate that the system is
911 still functional. It is safe to say Y here if you have a CATS
912 system, but the driver will do nothing.
915 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
916 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
917 || MACH_OMAP_PERSEUS2
919 depends on !GENERIC_CLOCKEVENTS
920 default y if ARCH_EBSA110
922 If you say Y here, one of the system LEDs (the green one on the
923 NetWinder, the amber one on the EBSA285, or the red one on the LART)
924 will flash regularly to indicate that the system is still
925 operational. This is mainly useful to kernel hackers who are
926 debugging unstable kernels.
928 The LART uses the same LED for both Timer LED and CPU usage LED
929 functions. You may choose to use both, but the Timer LED function
930 will overrule the CPU usage LED.
933 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
935 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
936 || MACH_OMAP_PERSEUS2
939 If you say Y here, the red LED will be used to give a good real
940 time indication of CPU usage, by lighting whenever the idle task
941 is not currently executing.
943 The LART uses the same LED for both Timer LED and CPU usage LED
944 functions. You may choose to use both, but the Timer LED function
945 will overrule the CPU usage LED.
947 config ALIGNMENT_TRAP
949 depends on CPU_CP15_MMU
950 default y if !ARCH_EBSA110
952 ARM processors cannot fetch/store information which is not
953 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
954 address divisible by 4. On 32-bit ARM processors, these non-aligned
955 fetch/store instructions will be emulated in software if you say
956 here, which has a severe performance impact. This is necessary for
957 correct operation of some network protocols. With an IP-only
958 configuration it is safe to say N, otherwise say Y.
964 # Compressed boot loader in ROM. Yes, we really want to ask about
965 # TEXT and BSS so we preserve their values in the config files.
966 config ZBOOT_ROM_TEXT
967 hex "Compressed ROM boot loader base address"
970 The physical address at which the ROM-able zImage is to be
971 placed in the target. Platforms which normally make use of
972 ROM-able zImage formats normally set this to a suitable
973 value in their defconfig file.
975 If ZBOOT_ROM is not enabled, this has no effect.
978 hex "Compressed ROM boot loader BSS address"
981 The base address of an area of read/write memory in the target
982 for the ROM-able zImage which must be available while the
983 decompressor is running. It must be large enough to hold the
984 entire decompressed kernel plus an additional 128 KiB.
985 Platforms which normally make use of ROM-able zImage formats
986 normally set this to a suitable value in their defconfig file.
988 If ZBOOT_ROM is not enabled, this has no effect.
991 bool "Compressed boot loader in ROM/flash"
992 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
994 Say Y here if you intend to execute your compressed kernel image
995 (zImage) directly from ROM or flash. If unsure, say N.
998 string "Default kernel command string"
1001 On some architectures (EBSA110 and CATS), there is currently no way
1002 for the boot loader to pass arguments to the kernel. For these
1003 architectures, you should supply some command-line options at build
1004 time by entering them here. As a minimum, you should specify the
1005 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1008 bool "Kernel Execute-In-Place from ROM"
1009 depends on !ZBOOT_ROM
1011 Execute-In-Place allows the kernel to run from non-volatile storage
1012 directly addressable by the CPU, such as NOR flash. This saves RAM
1013 space since the text section of the kernel is not loaded from flash
1014 to RAM. Read-write sections, such as the data section and stack,
1015 are still copied to RAM. The XIP kernel is not compressed since
1016 it has to run directly from flash, so it will take more space to
1017 store it. The flash address used to link the kernel object files,
1018 and for storing it, is configuration dependent. Therefore, if you
1019 say Y here, you must know the proper physical address where to
1020 store the kernel image depending on your own flash memory usage.
1022 Also note that the make target becomes "make xipImage" rather than
1023 "make zImage" or "make Image". The final kernel binary to put in
1024 ROM memory will be arch/arm/boot/xipImage.
1028 config XIP_PHYS_ADDR
1029 hex "XIP Kernel Physical Location"
1030 depends on XIP_KERNEL
1031 default "0x00080000"
1033 This is the physical address in your flash memory the kernel will
1034 be linked for and stored to. This address is dependent on your
1038 bool "Kexec system call (EXPERIMENTAL)"
1039 depends on EXPERIMENTAL
1041 kexec is a system call that implements the ability to shutdown your
1042 current kernel, and to start another kernel. It is like a reboot
1043 but it is independent of the system firmware. And like a reboot
1044 you can start any kernel with it, not just Linux.
1046 It is an ongoing process to be certain the hardware in a machine
1047 is properly shutdown, so do not be surprised if this code does not
1048 initially work for you. It may help to enable device hotplugging
1052 bool "Export atags in procfs"
1056 Should the atags used to boot the kernel be exported in an "atags"
1057 file in procfs. Useful with kexec.
1061 menu "CPU Power Management"
1063 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1065 source "drivers/cpufreq/Kconfig"
1067 config CPU_FREQ_SA1100
1069 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1072 config CPU_FREQ_SA1110
1074 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1077 config CPU_FREQ_INTEGRATOR
1078 tristate "CPUfreq driver for ARM Integrator CPUs"
1079 depends on ARCH_INTEGRATOR && CPU_FREQ
1082 This enables the CPUfreq driver for ARM Integrator CPUs.
1084 For details, take a look at <file:Documentation/cpu-freq>.
1089 tristate "CPUfreq driver for i.MX CPUs"
1090 depends on ARCH_IMX && CPU_FREQ
1093 This enables the CPUfreq driver for i.MX CPUs.
1099 depends on CPU_FREQ && ARCH_PXA && PXA25x
1101 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1105 source "drivers/cpuidle/Kconfig"
1109 menu "Floating point emulation"
1111 comment "At least one emulation must be selected"
1114 bool "NWFPE math emulation"
1115 depends on !AEABI || OABI_COMPAT
1117 Say Y to include the NWFPE floating point emulator in the kernel.
1118 This is necessary to run most binaries. Linux does not currently
1119 support floating point hardware so you need to say Y here even if
1120 your machine has an FPA or floating point co-processor podule.
1122 You may say N here if you are going to load the Acorn FPEmulator
1123 early in the bootup.
1126 bool "Support extended precision"
1127 depends on FPE_NWFPE
1129 Say Y to include 80-bit support in the kernel floating-point
1130 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1131 Note that gcc does not generate 80-bit operations by default,
1132 so in most cases this option only enlarges the size of the
1133 floating point emulator without any good reason.
1135 You almost surely want to say N here.
1138 bool "FastFPE math emulation (EXPERIMENTAL)"
1139 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1141 Say Y here to include the FAST floating point emulator in the kernel.
1142 This is an experimental much faster emulator which now also has full
1143 precision for the mantissa. It does not support any exceptions.
1144 It is very simple, and approximately 3-6 times faster than NWFPE.
1146 It should be sufficient for most programs. It may be not suitable
1147 for scientific calculations, but you have to check this for yourself.
1148 If you do not feel you need a faster FP emulation you should better
1152 bool "VFP-format floating point maths"
1153 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1155 Say Y to include VFP support code in the kernel. This is needed
1156 if your hardware includes a VFP unit.
1158 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1159 release notes and additional status information.
1161 Say N if your target does not have VFP hardware.
1169 bool "Advanced SIMD (NEON) Extension support"
1170 depends on VFPv3 && CPU_V7
1172 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1177 menu "Userspace binary formats"
1179 source "fs/Kconfig.binfmt"
1182 tristate "RISC OS personality"
1185 Say Y here to include the kernel code necessary if you want to run
1186 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1187 experimental; if this sounds frightening, say N and sleep in peace.
1188 You can also say M here to compile this support as a module (which
1189 will be called arthur).
1193 menu "Power management options"
1195 source "kernel/power/Kconfig"
1197 config ARCH_SUSPEND_POSSIBLE
1202 source "net/Kconfig"
1204 menu "Device Drivers"
1206 source "drivers/base/Kconfig"
1208 source "drivers/connector/Kconfig"
1210 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1211 source "drivers/mtd/Kconfig"
1214 source "drivers/parport/Kconfig"
1216 source "drivers/pnp/Kconfig"
1218 source "drivers/block/Kconfig"
1220 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1222 source "drivers/misc/Kconfig"
1224 source "drivers/ide/Kconfig"
1226 source "drivers/scsi/Kconfig"
1228 source "drivers/ata/Kconfig"
1230 source "drivers/md/Kconfig"
1232 source "drivers/message/fusion/Kconfig"
1234 source "drivers/ieee1394/Kconfig"
1236 source "drivers/message/i2o/Kconfig"
1238 source "drivers/net/Kconfig"
1240 source "drivers/isdn/Kconfig"
1242 # input before char - char/joystick depends on it. As does USB.
1244 source "drivers/input/Kconfig"
1246 source "drivers/char/Kconfig"
1248 source "drivers/i2c/Kconfig"
1250 source "drivers/spi/Kconfig"
1252 source "drivers/gpio/Kconfig"
1254 source "drivers/w1/Kconfig"
1256 source "drivers/power/Kconfig"
1258 source "drivers/hwmon/Kconfig"
1260 source "drivers/thermal/Kconfig"
1262 source "drivers/watchdog/Kconfig"
1264 source "drivers/ssb/Kconfig"
1266 #source "drivers/l3/Kconfig"
1268 source "drivers/mfd/Kconfig"
1270 source "drivers/media/Kconfig"
1272 source "drivers/video/Kconfig"
1274 source "sound/Kconfig"
1276 source "drivers/hid/Kconfig"
1278 source "drivers/usb/Kconfig"
1280 source "drivers/uwb/Kconfig"
1282 source "drivers/mmc/Kconfig"
1284 source "drivers/memstick/Kconfig"
1286 source "drivers/accessibility/Kconfig"
1288 source "drivers/leds/Kconfig"
1290 source "drivers/rtc/Kconfig"
1292 source "drivers/dma/Kconfig"
1294 source "drivers/dca/Kconfig"
1296 source "drivers/auxdisplay/Kconfig"
1298 source "drivers/regulator/Kconfig"
1300 source "drivers/uio/Kconfig"
1306 source "arch/arm/Kconfig.debug"
1308 source "security/Kconfig"
1310 source "crypto/Kconfig"
1312 source "lib/Kconfig"