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
274 select ARCH_REQUIRE_GPIOLIB
276 This enables support for the Cirrus EP93xx series of CPUs.
278 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"
291 This enables support for systems based on the Hilscher NetX Soc
294 bool "Hynix HMS720x-based"
298 This enables support for systems based on the Hynix HMS720x
305 select GENERIC_CLOCKEVENTS
307 Support for Motorola's i.MX family of processors (MX1, MXL).
315 select ARCH_SUPPORTS_MSI
318 Support for Intel's IOP13XX (XScale) family of processors.
327 select ARCH_REQUIRE_GPIOLIB
329 Support for Intel's 80219 and IOP32X (XScale) family of
339 select ARCH_REQUIRE_GPIOLIB
341 Support for Intel's IOP33X (XScale) family of processors.
349 Support for Intel's IXP23xx (XScale) family of processors.
352 bool "IXP2400/2800-based"
357 Support for Intel's IXP2400/2800 (XScale) family of processors.
365 select GENERIC_CLOCKEVENTS
366 select DMABOUNCE if PCI
368 Support for Intel's IXP4XX (XScale) family of processors.
375 Say Y here if you intend to run this kernel on a LinkUp Systems
376 L7200 Software Development Board which uses an ARM720T processor.
377 Information on this board can be obtained at:
379 <http://www.linkupsys.com/>
381 If you have any questions or comments about the Linux kernel port
382 to this board, send e-mail to <sjhill@cotw.com>.
385 bool "Marvell Kirkwood"
389 select GENERIC_CLOCKEVENTS
392 Support for the following Marvell Kirkwood series SoCs:
393 88F6180, 88F6192 and 88F6281.
396 bool "Micrel/Kendin KS8695"
400 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
401 System-on-Chip devices.
404 bool "NetSilicon NS9xxx"
408 select GENERIC_CLOCKEVENTS
411 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
414 <http://www.digi.com/products/microprocessors/index.jsp>
417 bool "Marvell Loki (88RC8480)"
420 select GENERIC_CLOCKEVENTS
423 Support for the Marvell Loki (88RC8480) SoC.
426 bool "Marvell MV78xx0"
430 select GENERIC_CLOCKEVENTS
433 Support for the following Marvell MV78xx0 series SoCs:
437 bool "Freescale MXC/iMX-based"
439 select GENERIC_CLOCKEVENTS
442 select ARCH_REQUIRE_GPIOLIB
444 Support for Freescale MXC/iMX-based family of processors
453 select GENERIC_CLOCKEVENTS
456 Support for the following Marvell Orion 5x series SoCs:
457 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
458 Orion-2 (5281), Orion-1-90 (6183).
461 bool "Philips Nexperia PNX4008 Mobile"
465 This enables support for Philips PNX4008 mobile platform.
468 bool "PXA2xx/PXA3xx-based"
474 select ARCH_REQUIRE_GPIOLIB
476 select GENERIC_CLOCKEVENTS
479 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
486 select ARCH_MAY_HAVE_PC_FDC
487 select HAVE_PATA_PLATFORM
490 select ARCH_SPARSEMEM_ENABLE
492 On the Acorn Risc-PC, Linux can support the internal IDE disk and
493 CD-ROM interface, serial and parallel port, and the floppy drive.
499 select ARCH_SPARSEMEM_ENABLE
503 select GENERIC_CLOCKEVENTS
506 select ARCH_REQUIRE_GPIOLIB
508 Support for StrongARM 11x0 based boards.
511 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
515 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
516 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
517 the Samsung SMDK2410 development board (and derivatives).
527 Support for the StrongARM based Digital DNARD machine, also known
528 as "Shark" (<http://www.shark-linux.de/shark.html>).
533 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
534 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
536 Say Y here for systems based on one of the Sharp LH7A40X
537 System on a Chip processors. These CPUs include an ARM922T
538 core with a wide array of integrated devices for
539 hand-held and low-power applications.
545 select GENERIC_CLOCKEVENTS
547 select ARCH_REQUIRE_GPIOLIB
551 Support for TI's DaVinci platform.
557 select ARCH_REQUIRE_GPIOLIB
559 select GENERIC_CLOCKEVENTS
561 Support for TI's OMAP platform (OMAP1 and OMAP2).
567 select GENERIC_CLOCKEVENTS
569 Support for Qualcomm MSM7K based systems. This runs on the ARM11
570 apps processor of the MSM7K and depends on a shared memory
571 interface to the ARM9 modem processor which runs the baseband stack
572 and controls some vital subsystems (clock and power control, etc).
576 source "arch/arm/mach-clps711x/Kconfig"
578 source "arch/arm/mach-ep93xx/Kconfig"
580 source "arch/arm/mach-footbridge/Kconfig"
582 source "arch/arm/mach-integrator/Kconfig"
584 source "arch/arm/mach-iop32x/Kconfig"
586 source "arch/arm/mach-iop33x/Kconfig"
588 source "arch/arm/mach-iop13xx/Kconfig"
590 source "arch/arm/mach-ixp4xx/Kconfig"
592 source "arch/arm/mach-ixp2000/Kconfig"
594 source "arch/arm/mach-ixp23xx/Kconfig"
596 source "arch/arm/mach-loki/Kconfig"
598 source "arch/arm/mach-mv78xx0/Kconfig"
600 source "arch/arm/mach-pxa/Kconfig"
602 source "arch/arm/mach-sa1100/Kconfig"
604 source "arch/arm/plat-omap/Kconfig"
606 source "arch/arm/mach-omap1/Kconfig"
608 source "arch/arm/mach-omap2/Kconfig"
610 source "arch/arm/mach-orion5x/Kconfig"
612 source "arch/arm/mach-kirkwood/Kconfig"
614 source "arch/arm/plat-s3c24xx/Kconfig"
615 source "arch/arm/plat-s3c/Kconfig"
618 source "arch/arm/mach-s3c2400/Kconfig"
619 source "arch/arm/mach-s3c2410/Kconfig"
620 source "arch/arm/mach-s3c2412/Kconfig"
621 source "arch/arm/mach-s3c2440/Kconfig"
622 source "arch/arm/mach-s3c2442/Kconfig"
623 source "arch/arm/mach-s3c2443/Kconfig"
626 source "arch/arm/mach-lh7a40x/Kconfig"
628 source "arch/arm/mach-imx/Kconfig"
630 source "arch/arm/mach-h720x/Kconfig"
632 source "arch/arm/mach-versatile/Kconfig"
634 source "arch/arm/mach-aaec2000/Kconfig"
636 source "arch/arm/mach-realview/Kconfig"
638 source "arch/arm/mach-at91/Kconfig"
640 source "arch/arm/plat-mxc/Kconfig"
642 source "arch/arm/mach-netx/Kconfig"
644 source "arch/arm/mach-ns9xxx/Kconfig"
646 source "arch/arm/mach-davinci/Kconfig"
648 source "arch/arm/mach-ks8695/Kconfig"
650 source "arch/arm/mach-msm/Kconfig"
652 # Definitions to make life easier
662 source arch/arm/mm/Kconfig
665 bool "Enable iWMMXt support"
666 depends on CPU_XSCALE || CPU_XSC3
667 default y if PXA27x || PXA3xx
669 Enable support for iWMMXt context switching at run time if
670 running on a CPU that supports it.
672 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
675 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
679 source "arch/arm/Kconfig-nommu"
684 source "arch/arm/common/Kconfig"
686 config FORCE_MAX_ZONEORDER
699 Find out whether you have ISA slots on your motherboard. ISA is the
700 name of a bus system, i.e. the way the CPU talks to the other stuff
701 inside your box. Other bus systems are PCI, EISA, MicroChannel
702 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
703 newer boards don't support it. If you have ISA, say Y, otherwise N.
705 # Select ISA DMA controller support
710 # Select ISA DMA interface
715 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
717 Find out whether you have a PCI motherboard. PCI is the name of a
718 bus system, i.e. the way the CPU talks to the other stuff inside
719 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
720 VESA. If you have PCI, say Y, otherwise N.
725 # Select the host bridge type
726 config PCI_HOST_VIA82C505
728 depends on PCI && ARCH_SHARK
731 config PCI_HOST_ITE8152
733 depends on PCI && MACH_ARMCORE
737 source "drivers/pci/Kconfig"
739 source "drivers/pcmcia/Kconfig"
743 menu "Kernel Features"
745 source "kernel/time/Kconfig"
748 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
749 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
750 select USE_GENERIC_SMP_HELPERS
752 This enables support for systems with more than one CPU. If you have
753 a system with only one CPU, like most personal computers, say N. If
754 you have a system with more than one CPU, say Y.
756 If you say N here, the kernel will run on single and multiprocessor
757 machines, but will use only one CPU of a multiprocessor machine. If
758 you say Y here, the kernel will run on many, but not all, single
759 processor machines. On a single processor machine, the kernel will
760 run faster if you say N here.
762 See also <file:Documentation/i386/IO-APIC.txt>,
763 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
764 <http://www.linuxdoc.org/docs.html#howto>.
766 If you don't know what to do here, say N.
769 prompt "Memory split"
772 Select the desired split between kernel and user memory.
774 If you are not absolutely sure what you are doing, leave this
778 bool "3G/1G user/kernel split"
780 bool "2G/2G user/kernel split"
782 bool "1G/3G user/kernel split"
787 default 0x40000000 if VMSPLIT_1G
788 default 0x80000000 if VMSPLIT_2G
792 int "Maximum number of CPUs (2-32)"
798 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
799 depends on SMP && HOTPLUG && EXPERIMENTAL
801 Say Y here to experiment with turning CPUs off and on. CPUs
802 can be controlled through /sys/devices/system/cpu.
805 bool "Use local timer interrupts"
806 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
809 Enable support for local timers on SMP platforms, rather then the
810 legacy IPI broadcast method. Local timers allows the system
811 accounting to be spread across the timer interval, preventing a
812 "thundering herd" at every timer tick.
815 bool "Preemptible Kernel (EXPERIMENTAL)"
816 depends on EXPERIMENTAL
818 This option reduces the latency of the kernel when reacting to
819 real-time or interactive events by allowing a low priority process to
820 be preempted even if it is in kernel mode executing a system call.
821 This allows applications to run more reliably even when the system is
824 Say Y here if you are building a kernel for a desktop, embedded
825 or real-time system. Say N if you are unsure.
829 default 128 if ARCH_L7200
830 default 200 if ARCH_EBSA110 || ARCH_S3C2410
831 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
832 default AT91_TIMER_HZ if ARCH_AT91
836 bool "Use the ARM EABI to compile the kernel"
838 This option allows for the kernel to be compiled using the latest
839 ARM ABI (aka EABI). This is only useful if you are using a user
840 space environment that is also compiled with EABI.
842 Since there are major incompatibilities between the legacy ABI and
843 EABI, especially with regard to structure member alignment, this
844 option also changes the kernel syscall calling convention to
845 disambiguate both ABIs and allow for backward compatibility support
846 (selected with CONFIG_OABI_COMPAT).
848 To use this you need GCC version 4.0.0 or later.
851 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
852 depends on AEABI && EXPERIMENTAL
855 This option preserves the old syscall interface along with the
856 new (ARM EABI) one. It also provides a compatibility layer to
857 intercept syscalls that have structure arguments which layout
858 in memory differs between the legacy ABI and the new ARM EABI
859 (only for non "thumb" binaries). This option adds a tiny
860 overhead to all syscalls and produces a slightly larger kernel.
861 If you know you'll be using only pure EABI user space then you
862 can say N here. If this option is not selected and you attempt
863 to execute a legacy ABI binary then the result will be
864 UNPREDICTABLE (in fact it can be predicted that it won't work
865 at all). If in doubt say Y.
867 config ARCH_FLATMEM_HAS_HOLES
872 # Discontigmem is deprecated
873 config ARCH_DISCONTIGMEM_ENABLE
876 config ARCH_SPARSEMEM_ENABLE
879 config ARCH_SPARSEMEM_DEFAULT
880 def_bool ARCH_SPARSEMEM_ENABLE
882 config ARCH_SELECT_MEMORY_MODEL
883 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
887 default "4" if ARCH_LH7A40X
889 depends on NEED_MULTIPLE_NODES
894 bool "Timer and CPU usage LEDs"
895 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
896 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
897 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
898 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
899 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
900 ARCH_AT91 || ARCH_DAVINCI || \
901 ARCH_KS8695 || MACH_RD88F5182
903 If you say Y here, the LEDs on your machine will be used
904 to provide useful information about your current system status.
906 If you are compiling a kernel for a NetWinder or EBSA-285, you will
907 be able to select which LEDs are active using the options below. If
908 you are compiling a kernel for the EBSA-110 or the LART however, the
909 red LED will simply flash regularly to indicate that the system is
910 still functional. It is safe to say Y here if you have a CATS
911 system, but the driver will do nothing.
914 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
915 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
916 || MACH_OMAP_PERSEUS2
918 depends on !GENERIC_CLOCKEVENTS
919 default y if ARCH_EBSA110
921 If you say Y here, one of the system LEDs (the green one on the
922 NetWinder, the amber one on the EBSA285, or the red one on the LART)
923 will flash regularly to indicate that the system is still
924 operational. This is mainly useful to kernel hackers who are
925 debugging unstable kernels.
927 The LART uses the same LED for both Timer LED and CPU usage LED
928 functions. You may choose to use both, but the Timer LED function
929 will overrule the CPU usage LED.
932 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
934 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
935 || MACH_OMAP_PERSEUS2
938 If you say Y here, the red LED will be used to give a good real
939 time indication of CPU usage, by lighting whenever the idle task
940 is not currently executing.
942 The LART uses the same LED for both Timer LED and CPU usage LED
943 functions. You may choose to use both, but the Timer LED function
944 will overrule the CPU usage LED.
946 config ALIGNMENT_TRAP
948 depends on CPU_CP15_MMU
949 default y if !ARCH_EBSA110
951 ARM processors cannot fetch/store information which is not
952 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
953 address divisible by 4. On 32-bit ARM processors, these non-aligned
954 fetch/store instructions will be emulated in software if you say
955 here, which has a severe performance impact. This is necessary for
956 correct operation of some network protocols. With an IP-only
957 configuration it is safe to say N, otherwise say Y.
963 # Compressed boot loader in ROM. Yes, we really want to ask about
964 # TEXT and BSS so we preserve their values in the config files.
965 config ZBOOT_ROM_TEXT
966 hex "Compressed ROM boot loader base address"
969 The physical address at which the ROM-able zImage is to be
970 placed in the target. Platforms which normally make use of
971 ROM-able zImage formats normally set this to a suitable
972 value in their defconfig file.
974 If ZBOOT_ROM is not enabled, this has no effect.
977 hex "Compressed ROM boot loader BSS address"
980 The base address of an area of read/write memory in the target
981 for the ROM-able zImage which must be available while the
982 decompressor is running. It must be large enough to hold the
983 entire decompressed kernel plus an additional 128 KiB.
984 Platforms which normally make use of ROM-able zImage formats
985 normally set this to a suitable value in their defconfig file.
987 If ZBOOT_ROM is not enabled, this has no effect.
990 bool "Compressed boot loader in ROM/flash"
991 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
993 Say Y here if you intend to execute your compressed kernel image
994 (zImage) directly from ROM or flash. If unsure, say N.
997 string "Default kernel command string"
1000 On some architectures (EBSA110 and CATS), there is currently no way
1001 for the boot loader to pass arguments to the kernel. For these
1002 architectures, you should supply some command-line options at build
1003 time by entering them here. As a minimum, you should specify the
1004 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1007 bool "Kernel Execute-In-Place from ROM"
1008 depends on !ZBOOT_ROM
1010 Execute-In-Place allows the kernel to run from non-volatile storage
1011 directly addressable by the CPU, such as NOR flash. This saves RAM
1012 space since the text section of the kernel is not loaded from flash
1013 to RAM. Read-write sections, such as the data section and stack,
1014 are still copied to RAM. The XIP kernel is not compressed since
1015 it has to run directly from flash, so it will take more space to
1016 store it. The flash address used to link the kernel object files,
1017 and for storing it, is configuration dependent. Therefore, if you
1018 say Y here, you must know the proper physical address where to
1019 store the kernel image depending on your own flash memory usage.
1021 Also note that the make target becomes "make xipImage" rather than
1022 "make zImage" or "make Image". The final kernel binary to put in
1023 ROM memory will be arch/arm/boot/xipImage.
1027 config XIP_PHYS_ADDR
1028 hex "XIP Kernel Physical Location"
1029 depends on XIP_KERNEL
1030 default "0x00080000"
1032 This is the physical address in your flash memory the kernel will
1033 be linked for and stored to. This address is dependent on your
1037 bool "Kexec system call (EXPERIMENTAL)"
1038 depends on EXPERIMENTAL
1040 kexec is a system call that implements the ability to shutdown your
1041 current kernel, and to start another kernel. It is like a reboot
1042 but it is independent of the system firmware. And like a reboot
1043 you can start any kernel with it, not just Linux.
1045 It is an ongoing process to be certain the hardware in a machine
1046 is properly shutdown, so do not be surprised if this code does not
1047 initially work for you. It may help to enable device hotplugging
1051 bool "Export atags in procfs"
1055 Should the atags used to boot the kernel be exported in an "atags"
1056 file in procfs. Useful with kexec.
1060 menu "CPU Power Management"
1062 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1064 source "drivers/cpufreq/Kconfig"
1066 config CPU_FREQ_SA1100
1068 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1071 config CPU_FREQ_SA1110
1073 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1076 config CPU_FREQ_INTEGRATOR
1077 tristate "CPUfreq driver for ARM Integrator CPUs"
1078 depends on ARCH_INTEGRATOR && CPU_FREQ
1081 This enables the CPUfreq driver for ARM Integrator CPUs.
1083 For details, take a look at <file:Documentation/cpu-freq>.
1088 tristate "CPUfreq driver for i.MX CPUs"
1089 depends on ARCH_IMX && CPU_FREQ
1092 This enables the CPUfreq driver for i.MX CPUs.
1098 depends on CPU_FREQ && ARCH_PXA && PXA25x
1100 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1104 source "drivers/cpuidle/Kconfig"
1108 menu "Floating point emulation"
1110 comment "At least one emulation must be selected"
1113 bool "NWFPE math emulation"
1114 depends on !AEABI || OABI_COMPAT
1116 Say Y to include the NWFPE floating point emulator in the kernel.
1117 This is necessary to run most binaries. Linux does not currently
1118 support floating point hardware so you need to say Y here even if
1119 your machine has an FPA or floating point co-processor podule.
1121 You may say N here if you are going to load the Acorn FPEmulator
1122 early in the bootup.
1125 bool "Support extended precision"
1126 depends on FPE_NWFPE
1128 Say Y to include 80-bit support in the kernel floating-point
1129 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1130 Note that gcc does not generate 80-bit operations by default,
1131 so in most cases this option only enlarges the size of the
1132 floating point emulator without any good reason.
1134 You almost surely want to say N here.
1137 bool "FastFPE math emulation (EXPERIMENTAL)"
1138 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1140 Say Y here to include the FAST floating point emulator in the kernel.
1141 This is an experimental much faster emulator which now also has full
1142 precision for the mantissa. It does not support any exceptions.
1143 It is very simple, and approximately 3-6 times faster than NWFPE.
1145 It should be sufficient for most programs. It may be not suitable
1146 for scientific calculations, but you have to check this for yourself.
1147 If you do not feel you need a faster FP emulation you should better
1151 bool "VFP-format floating point maths"
1152 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1154 Say Y to include VFP support code in the kernel. This is needed
1155 if your hardware includes a VFP unit.
1157 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1158 release notes and additional status information.
1160 Say N if your target does not have VFP hardware.
1168 bool "Advanced SIMD (NEON) Extension support"
1169 depends on VFPv3 && CPU_V7
1171 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1176 menu "Userspace binary formats"
1178 source "fs/Kconfig.binfmt"
1181 tristate "RISC OS personality"
1184 Say Y here to include the kernel code necessary if you want to run
1185 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1186 experimental; if this sounds frightening, say N and sleep in peace.
1187 You can also say M here to compile this support as a module (which
1188 will be called arthur).
1192 menu "Power management options"
1194 source "kernel/power/Kconfig"
1196 config ARCH_SUSPEND_POSSIBLE
1201 source "net/Kconfig"
1203 menu "Device Drivers"
1205 source "drivers/base/Kconfig"
1207 source "drivers/connector/Kconfig"
1209 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1210 source "drivers/mtd/Kconfig"
1213 source "drivers/parport/Kconfig"
1215 source "drivers/pnp/Kconfig"
1217 source "drivers/block/Kconfig"
1219 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1221 source "drivers/misc/Kconfig"
1223 source "drivers/ide/Kconfig"
1225 source "drivers/scsi/Kconfig"
1227 source "drivers/ata/Kconfig"
1229 source "drivers/md/Kconfig"
1231 source "drivers/message/fusion/Kconfig"
1233 source "drivers/ieee1394/Kconfig"
1235 source "drivers/message/i2o/Kconfig"
1237 source "drivers/net/Kconfig"
1239 source "drivers/isdn/Kconfig"
1241 # input before char - char/joystick depends on it. As does USB.
1243 source "drivers/input/Kconfig"
1245 source "drivers/char/Kconfig"
1247 source "drivers/i2c/Kconfig"
1249 source "drivers/spi/Kconfig"
1251 source "drivers/gpio/Kconfig"
1253 source "drivers/w1/Kconfig"
1255 source "drivers/power/Kconfig"
1257 source "drivers/hwmon/Kconfig"
1259 source "drivers/thermal/Kconfig"
1261 source "drivers/watchdog/Kconfig"
1263 source "drivers/ssb/Kconfig"
1265 #source "drivers/l3/Kconfig"
1267 source "drivers/mfd/Kconfig"
1269 source "drivers/media/Kconfig"
1271 source "drivers/video/Kconfig"
1273 source "sound/Kconfig"
1275 source "drivers/hid/Kconfig"
1277 source "drivers/usb/Kconfig"
1279 source "drivers/uwb/Kconfig"
1281 source "drivers/mmc/Kconfig"
1283 source "drivers/memstick/Kconfig"
1285 source "drivers/accessibility/Kconfig"
1287 source "drivers/leds/Kconfig"
1289 source "drivers/rtc/Kconfig"
1291 source "drivers/dma/Kconfig"
1293 source "drivers/dca/Kconfig"
1295 source "drivers/auxdisplay/Kconfig"
1297 source "drivers/regulator/Kconfig"
1299 source "drivers/uio/Kconfig"
1305 source "arch/arm/Kconfig.debug"
1307 source "security/Kconfig"
1309 source "crypto/Kconfig"
1311 source "lib/Kconfig"