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"
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"
253 select ARCH_SPARSEMEM_ENABLE
255 Support for the Cirrus Logic PS7500FE system-on-a-chip.
258 bool "Cirrus Logic CLPS711x/EP721x-based"
261 Support for Cirrus Logic 711x/721x based boards.
269 This is an evaluation board for the StrongARM processor available
270 from Digital. It has limited hardware on-board, including an
271 Ethernet interface, two PCMCIA sockets, two serial ports and a
281 select ARCH_REQUIRE_GPIOLIB
283 This enables support for the Cirrus EP93xx series of CPUs.
285 config ARCH_FOOTBRIDGE
290 Support for systems based on the DC21285 companion chip
291 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
294 bool "Hilscher NetX based"
298 This enables support for systems based on the Hilscher NetX Soc
301 bool "Hynix HMS720x-based"
305 This enables support for systems based on the Hynix HMS720x
312 select GENERIC_CLOCKEVENTS
314 Support for Motorola's i.MX family of processors (MX1, MXL).
322 select ARCH_SUPPORTS_MSI
325 Support for Intel's IOP13XX (XScale) family of processors.
334 select ARCH_REQUIRE_GPIOLIB
336 Support for Intel's 80219 and IOP32X (XScale) family of
346 select ARCH_REQUIRE_GPIOLIB
348 Support for Intel's IOP33X (XScale) family of processors.
356 Support for Intel's IXP23xx (XScale) family of processors.
359 bool "IXP2400/2800-based"
364 Support for Intel's IXP2400/2800 (XScale) family of processors.
372 select GENERIC_CLOCKEVENTS
373 select DMABOUNCE if PCI
375 Support for Intel's IXP4XX (XScale) family of processors.
382 Say Y here if you intend to run this kernel on a LinkUp Systems
383 L7200 Software Development Board which uses an ARM720T processor.
384 Information on this board can be obtained at:
386 <http://www.linkupsys.com/>
388 If you have any questions or comments about the Linux kernel port
389 to this board, send e-mail to <sjhill@cotw.com>.
392 bool "Marvell Kirkwood"
396 select GENERIC_CLOCKEVENTS
399 Support for the following Marvell Kirkwood series SoCs:
400 88F6180, 88F6192 and 88F6281.
403 bool "Micrel/Kendin KS8695"
407 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
408 System-on-Chip devices.
411 bool "NetSilicon NS9xxx"
415 select GENERIC_CLOCKEVENTS
418 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
421 <http://www.digi.com/products/microprocessors/index.jsp>
424 bool "Marvell Loki (88RC8480)"
427 select GENERIC_CLOCKEVENTS
430 Support for the Marvell Loki (88RC8480) SoC.
433 bool "Marvell MV78xx0"
437 select GENERIC_CLOCKEVENTS
440 Support for the following Marvell MV78xx0 series SoCs:
444 bool "Freescale MXC/iMX-based"
446 select GENERIC_CLOCKEVENTS
449 select ARCH_REQUIRE_GPIOLIB
451 Support for Freescale MXC/iMX-based family of processors
460 select GENERIC_CLOCKEVENTS
463 Support for the following Marvell Orion 5x series SoCs:
464 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
465 Orion-2 (5281), Orion-1-90 (6183).
468 bool "Philips Nexperia PNX4008 Mobile"
472 This enables support for Philips PNX4008 mobile platform.
475 bool "PXA2xx/PXA3xx-based"
480 select ARCH_REQUIRE_GPIOLIB
482 select GENERIC_CLOCKEVENTS
485 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
492 select ARCH_MAY_HAVE_PC_FDC
493 select HAVE_PATA_PLATFORM
496 select ARCH_SPARSEMEM_ENABLE
498 On the Acorn Risc-PC, Linux can support the internal IDE disk and
499 CD-ROM interface, serial and parallel port, and the floppy drive.
505 select ARCH_SPARSEMEM_ENABLE
509 select GENERIC_CLOCKEVENTS
512 select ARCH_REQUIRE_GPIOLIB
514 Support for StrongARM 11x0 based boards.
517 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
521 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
522 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
523 the Samsung SMDK2410 development board (and derivatives).
533 Support for the StrongARM based Digital DNARD machine, also known
534 as "Shark" (<http://www.shark-linux.de/shark.html>).
539 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
540 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
542 Say Y here for systems based on one of the Sharp LH7A40X
543 System on a Chip processors. These CPUs include an ARM922T
544 core with a wide array of integrated devices for
545 hand-held and low-power applications.
551 select GENERIC_CLOCKEVENTS
553 select ARCH_REQUIRE_GPIOLIB
557 Support for TI's DaVinci platform.
563 select ARCH_REQUIRE_GPIOLIB
565 select GENERIC_CLOCKEVENTS
567 Support for TI's OMAP platform (OMAP1 and OMAP2).
573 select GENERIC_CLOCKEVENTS
575 Support for Qualcomm MSM7K based systems. This runs on the ARM11
576 apps processor of the MSM7K and depends on a shared memory
577 interface to the ARM9 modem processor which runs the baseband stack
578 and controls some vital subsystems (clock and power control, etc).
582 source "arch/arm/mach-clps711x/Kconfig"
584 source "arch/arm/mach-ep93xx/Kconfig"
586 source "arch/arm/mach-footbridge/Kconfig"
588 source "arch/arm/mach-integrator/Kconfig"
590 source "arch/arm/mach-iop32x/Kconfig"
592 source "arch/arm/mach-iop33x/Kconfig"
594 source "arch/arm/mach-iop13xx/Kconfig"
596 source "arch/arm/mach-ixp4xx/Kconfig"
598 source "arch/arm/mach-ixp2000/Kconfig"
600 source "arch/arm/mach-ixp23xx/Kconfig"
602 source "arch/arm/mach-loki/Kconfig"
604 source "arch/arm/mach-mv78xx0/Kconfig"
606 source "arch/arm/mach-pxa/Kconfig"
608 source "arch/arm/mach-sa1100/Kconfig"
610 source "arch/arm/plat-omap/Kconfig"
612 source "arch/arm/mach-omap1/Kconfig"
614 source "arch/arm/mach-omap2/Kconfig"
616 source "arch/arm/mach-orion5x/Kconfig"
618 source "arch/arm/mach-kirkwood/Kconfig"
620 source "arch/arm/plat-s3c24xx/Kconfig"
621 source "arch/arm/plat-s3c/Kconfig"
624 source "arch/arm/mach-s3c2400/Kconfig"
625 source "arch/arm/mach-s3c2410/Kconfig"
626 source "arch/arm/mach-s3c2412/Kconfig"
627 source "arch/arm/mach-s3c2440/Kconfig"
628 source "arch/arm/mach-s3c2442/Kconfig"
629 source "arch/arm/mach-s3c2443/Kconfig"
632 source "arch/arm/mach-lh7a40x/Kconfig"
634 source "arch/arm/mach-imx/Kconfig"
636 source "arch/arm/mach-h720x/Kconfig"
638 source "arch/arm/mach-versatile/Kconfig"
640 source "arch/arm/mach-aaec2000/Kconfig"
642 source "arch/arm/mach-realview/Kconfig"
644 source "arch/arm/mach-at91/Kconfig"
646 source "arch/arm/plat-mxc/Kconfig"
648 source "arch/arm/mach-netx/Kconfig"
650 source "arch/arm/mach-ns9xxx/Kconfig"
652 source "arch/arm/mach-davinci/Kconfig"
654 source "arch/arm/mach-ks8695/Kconfig"
656 source "arch/arm/mach-msm/Kconfig"
658 # Definitions to make life easier
668 source arch/arm/mm/Kconfig
671 bool "Enable iWMMXt support"
672 depends on CPU_XSCALE || CPU_XSC3
673 default y if PXA27x || PXA3xx
675 Enable support for iWMMXt context switching at run time if
676 running on a CPU that supports it.
678 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
681 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
685 source "arch/arm/Kconfig-nommu"
690 source "arch/arm/common/Kconfig"
692 config FORCE_MAX_ZONEORDER
705 Find out whether you have ISA slots on your motherboard. ISA is the
706 name of a bus system, i.e. the way the CPU talks to the other stuff
707 inside your box. Other bus systems are PCI, EISA, MicroChannel
708 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
709 newer boards don't support it. If you have ISA, say Y, otherwise N.
711 # Select ISA DMA controller support
716 # Select ISA DMA interface
721 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
723 Find out whether you have a PCI motherboard. PCI is the name of a
724 bus system, i.e. the way the CPU talks to the other stuff inside
725 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
726 VESA. If you have PCI, say Y, otherwise N.
731 # Select the host bridge type
732 config PCI_HOST_VIA82C505
734 depends on PCI && ARCH_SHARK
737 config PCI_HOST_ITE8152
739 depends on PCI && MACH_ARMCORE
743 source "drivers/pci/Kconfig"
745 source "drivers/pcmcia/Kconfig"
749 menu "Kernel Features"
751 source "kernel/time/Kconfig"
754 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
755 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
756 select USE_GENERIC_SMP_HELPERS
758 This enables support for systems with more than one CPU. If you have
759 a system with only one CPU, like most personal computers, say N. If
760 you have a system with more than one CPU, say Y.
762 If you say N here, the kernel will run on single and multiprocessor
763 machines, but will use only one CPU of a multiprocessor machine. If
764 you say Y here, the kernel will run on many, but not all, single
765 processor machines. On a single processor machine, the kernel will
766 run faster if you say N here.
768 See also <file:Documentation/i386/IO-APIC.txt>,
769 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
770 <http://www.linuxdoc.org/docs.html#howto>.
772 If you don't know what to do here, say N.
775 prompt "Memory split"
778 Select the desired split between kernel and user memory.
780 If you are not absolutely sure what you are doing, leave this
784 bool "3G/1G user/kernel split"
786 bool "2G/2G user/kernel split"
788 bool "1G/3G user/kernel split"
793 default 0x40000000 if VMSPLIT_1G
794 default 0x80000000 if VMSPLIT_2G
798 int "Maximum number of CPUs (2-32)"
804 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
805 depends on SMP && HOTPLUG && EXPERIMENTAL
807 Say Y here to experiment with turning CPUs off and on. CPUs
808 can be controlled through /sys/devices/system/cpu.
811 bool "Use local timer interrupts"
812 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
815 Enable support for local timers on SMP platforms, rather then the
816 legacy IPI broadcast method. Local timers allows the system
817 accounting to be spread across the timer interval, preventing a
818 "thundering herd" at every timer tick.
821 bool "Preemptible Kernel (EXPERIMENTAL)"
822 depends on EXPERIMENTAL
824 This option reduces the latency of the kernel when reacting to
825 real-time or interactive events by allowing a low priority process to
826 be preempted even if it is in kernel mode executing a system call.
827 This allows applications to run more reliably even when the system is
830 Say Y here if you are building a kernel for a desktop, embedded
831 or real-time system. Say N if you are unsure.
835 default 128 if ARCH_L7200
836 default 200 if ARCH_EBSA110 || ARCH_S3C2410
837 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
838 default AT91_TIMER_HZ if ARCH_AT91
842 bool "Use the ARM EABI to compile the kernel"
844 This option allows for the kernel to be compiled using the latest
845 ARM ABI (aka EABI). This is only useful if you are using a user
846 space environment that is also compiled with EABI.
848 Since there are major incompatibilities between the legacy ABI and
849 EABI, especially with regard to structure member alignment, this
850 option also changes the kernel syscall calling convention to
851 disambiguate both ABIs and allow for backward compatibility support
852 (selected with CONFIG_OABI_COMPAT).
854 To use this you need GCC version 4.0.0 or later.
857 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
858 depends on AEABI && EXPERIMENTAL
861 This option preserves the old syscall interface along with the
862 new (ARM EABI) one. It also provides a compatibility layer to
863 intercept syscalls that have structure arguments which layout
864 in memory differs between the legacy ABI and the new ARM EABI
865 (only for non "thumb" binaries). This option adds a tiny
866 overhead to all syscalls and produces a slightly larger kernel.
867 If you know you'll be using only pure EABI user space then you
868 can say N here. If this option is not selected and you attempt
869 to execute a legacy ABI binary then the result will be
870 UNPREDICTABLE (in fact it can be predicted that it won't work
871 at all). If in doubt say Y.
873 config ARCH_FLATMEM_HAS_HOLES
878 # Discontigmem is deprecated
879 config ARCH_DISCONTIGMEM_ENABLE
882 config ARCH_SPARSEMEM_ENABLE
885 config ARCH_SPARSEMEM_DEFAULT
886 def_bool ARCH_SPARSEMEM_ENABLE
888 config ARCH_SELECT_MEMORY_MODEL
889 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
893 default "4" if ARCH_LH7A40X
895 depends on NEED_MULTIPLE_NODES
900 bool "Timer and CPU usage LEDs"
901 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
902 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
903 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
904 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
905 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
906 ARCH_AT91 || ARCH_DAVINCI || \
907 ARCH_KS8695 || MACH_RD88F5182
909 If you say Y here, the LEDs on your machine will be used
910 to provide useful information about your current system status.
912 If you are compiling a kernel for a NetWinder or EBSA-285, you will
913 be able to select which LEDs are active using the options below. If
914 you are compiling a kernel for the EBSA-110 or the LART however, the
915 red LED will simply flash regularly to indicate that the system is
916 still functional. It is safe to say Y here if you have a CATS
917 system, but the driver will do nothing.
920 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
921 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
922 || MACH_OMAP_PERSEUS2
924 depends on !GENERIC_CLOCKEVENTS
925 default y if ARCH_EBSA110
927 If you say Y here, one of the system LEDs (the green one on the
928 NetWinder, the amber one on the EBSA285, or the red one on the LART)
929 will flash regularly to indicate that the system is still
930 operational. This is mainly useful to kernel hackers who are
931 debugging unstable kernels.
933 The LART uses the same LED for both Timer LED and CPU usage LED
934 functions. You may choose to use both, but the Timer LED function
935 will overrule the CPU usage LED.
938 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
940 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
941 || MACH_OMAP_PERSEUS2
944 If you say Y here, the red LED will be used to give a good real
945 time indication of CPU usage, by lighting whenever the idle task
946 is not currently executing.
948 The LART uses the same LED for both Timer LED and CPU usage LED
949 functions. You may choose to use both, but the Timer LED function
950 will overrule the CPU usage LED.
952 config ALIGNMENT_TRAP
954 depends on CPU_CP15_MMU
955 default y if !ARCH_EBSA110
957 ARM processors cannot fetch/store information which is not
958 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
959 address divisible by 4. On 32-bit ARM processors, these non-aligned
960 fetch/store instructions will be emulated in software if you say
961 here, which has a severe performance impact. This is necessary for
962 correct operation of some network protocols. With an IP-only
963 configuration it is safe to say N, otherwise say Y.
969 # Compressed boot loader in ROM. Yes, we really want to ask about
970 # TEXT and BSS so we preserve their values in the config files.
971 config ZBOOT_ROM_TEXT
972 hex "Compressed ROM boot loader base address"
975 The physical address at which the ROM-able zImage is to be
976 placed in the target. Platforms which normally make use of
977 ROM-able zImage formats normally set this to a suitable
978 value in their defconfig file.
980 If ZBOOT_ROM is not enabled, this has no effect.
983 hex "Compressed ROM boot loader BSS address"
986 The base address of an area of read/write memory in the target
987 for the ROM-able zImage which must be available while the
988 decompressor is running. It must be large enough to hold the
989 entire decompressed kernel plus an additional 128 KiB.
990 Platforms which normally make use of ROM-able zImage formats
991 normally set this to a suitable value in their defconfig file.
993 If ZBOOT_ROM is not enabled, this has no effect.
996 bool "Compressed boot loader in ROM/flash"
997 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
999 Say Y here if you intend to execute your compressed kernel image
1000 (zImage) directly from ROM or flash. If unsure, say N.
1003 string "Default kernel command string"
1006 On some architectures (EBSA110 and CATS), there is currently no way
1007 for the boot loader to pass arguments to the kernel. For these
1008 architectures, you should supply some command-line options at build
1009 time by entering them here. As a minimum, you should specify the
1010 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1013 bool "Kernel Execute-In-Place from ROM"
1014 depends on !ZBOOT_ROM
1016 Execute-In-Place allows the kernel to run from non-volatile storage
1017 directly addressable by the CPU, such as NOR flash. This saves RAM
1018 space since the text section of the kernel is not loaded from flash
1019 to RAM. Read-write sections, such as the data section and stack,
1020 are still copied to RAM. The XIP kernel is not compressed since
1021 it has to run directly from flash, so it will take more space to
1022 store it. The flash address used to link the kernel object files,
1023 and for storing it, is configuration dependent. Therefore, if you
1024 say Y here, you must know the proper physical address where to
1025 store the kernel image depending on your own flash memory usage.
1027 Also note that the make target becomes "make xipImage" rather than
1028 "make zImage" or "make Image". The final kernel binary to put in
1029 ROM memory will be arch/arm/boot/xipImage.
1033 config XIP_PHYS_ADDR
1034 hex "XIP Kernel Physical Location"
1035 depends on XIP_KERNEL
1036 default "0x00080000"
1038 This is the physical address in your flash memory the kernel will
1039 be linked for and stored to. This address is dependent on your
1043 bool "Kexec system call (EXPERIMENTAL)"
1044 depends on EXPERIMENTAL
1046 kexec is a system call that implements the ability to shutdown your
1047 current kernel, and to start another kernel. It is like a reboot
1048 but it is independent of the system firmware. And like a reboot
1049 you can start any kernel with it, not just Linux.
1051 It is an ongoing process to be certain the hardware in a machine
1052 is properly shutdown, so do not be surprised if this code does not
1053 initially work for you. It may help to enable device hotplugging
1057 bool "Export atags in procfs"
1061 Should the atags used to boot the kernel be exported in an "atags"
1062 file in procfs. Useful with kexec.
1066 menu "CPU Power Management"
1068 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1070 source "drivers/cpufreq/Kconfig"
1072 config CPU_FREQ_SA1100
1074 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1077 config CPU_FREQ_SA1110
1079 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1082 config CPU_FREQ_INTEGRATOR
1083 tristate "CPUfreq driver for ARM Integrator CPUs"
1084 depends on ARCH_INTEGRATOR && CPU_FREQ
1087 This enables the CPUfreq driver for ARM Integrator CPUs.
1089 For details, take a look at <file:Documentation/cpu-freq>.
1094 tristate "CPUfreq driver for i.MX CPUs"
1095 depends on ARCH_IMX && CPU_FREQ
1098 This enables the CPUfreq driver for i.MX CPUs.
1104 depends on CPU_FREQ && ARCH_PXA && PXA25x
1106 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1110 source "drivers/cpuidle/Kconfig"
1114 menu "Floating point emulation"
1116 comment "At least one emulation must be selected"
1119 bool "NWFPE math emulation"
1120 depends on !AEABI || OABI_COMPAT
1122 Say Y to include the NWFPE floating point emulator in the kernel.
1123 This is necessary to run most binaries. Linux does not currently
1124 support floating point hardware so you need to say Y here even if
1125 your machine has an FPA or floating point co-processor podule.
1127 You may say N here if you are going to load the Acorn FPEmulator
1128 early in the bootup.
1131 bool "Support extended precision"
1132 depends on FPE_NWFPE
1134 Say Y to include 80-bit support in the kernel floating-point
1135 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1136 Note that gcc does not generate 80-bit operations by default,
1137 so in most cases this option only enlarges the size of the
1138 floating point emulator without any good reason.
1140 You almost surely want to say N here.
1143 bool "FastFPE math emulation (EXPERIMENTAL)"
1144 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1146 Say Y here to include the FAST floating point emulator in the kernel.
1147 This is an experimental much faster emulator which now also has full
1148 precision for the mantissa. It does not support any exceptions.
1149 It is very simple, and approximately 3-6 times faster than NWFPE.
1151 It should be sufficient for most programs. It may be not suitable
1152 for scientific calculations, but you have to check this for yourself.
1153 If you do not feel you need a faster FP emulation you should better
1157 bool "VFP-format floating point maths"
1158 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1160 Say Y to include VFP support code in the kernel. This is needed
1161 if your hardware includes a VFP unit.
1163 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1164 release notes and additional status information.
1166 Say N if your target does not have VFP hardware.
1174 bool "Advanced SIMD (NEON) Extension support"
1175 depends on VFPv3 && CPU_V7
1177 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1182 menu "Userspace binary formats"
1184 source "fs/Kconfig.binfmt"
1187 tristate "RISC OS personality"
1190 Say Y here to include the kernel code necessary if you want to run
1191 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1192 experimental; if this sounds frightening, say N and sleep in peace.
1193 You can also say M here to compile this support as a module (which
1194 will be called arthur).
1198 menu "Power management options"
1200 source "kernel/power/Kconfig"
1202 config ARCH_SUSPEND_POSSIBLE
1207 source "net/Kconfig"
1209 menu "Device Drivers"
1211 source "drivers/base/Kconfig"
1213 source "drivers/connector/Kconfig"
1215 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1216 source "drivers/mtd/Kconfig"
1219 source "drivers/parport/Kconfig"
1221 source "drivers/pnp/Kconfig"
1223 source "drivers/block/Kconfig"
1225 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1227 source "drivers/misc/Kconfig"
1229 source "drivers/ide/Kconfig"
1231 source "drivers/scsi/Kconfig"
1233 source "drivers/ata/Kconfig"
1235 source "drivers/md/Kconfig"
1237 source "drivers/message/fusion/Kconfig"
1239 source "drivers/ieee1394/Kconfig"
1241 source "drivers/message/i2o/Kconfig"
1243 source "drivers/net/Kconfig"
1245 source "drivers/isdn/Kconfig"
1247 # input before char - char/joystick depends on it. As does USB.
1249 source "drivers/input/Kconfig"
1251 source "drivers/char/Kconfig"
1253 source "drivers/i2c/Kconfig"
1255 source "drivers/spi/Kconfig"
1257 source "drivers/gpio/Kconfig"
1259 source "drivers/w1/Kconfig"
1261 source "drivers/power/Kconfig"
1263 source "drivers/hwmon/Kconfig"
1265 source "drivers/thermal/Kconfig"
1267 source "drivers/watchdog/Kconfig"
1269 source "drivers/ssb/Kconfig"
1271 #source "drivers/l3/Kconfig"
1273 source "drivers/mfd/Kconfig"
1275 source "drivers/media/Kconfig"
1277 source "drivers/video/Kconfig"
1279 source "sound/Kconfig"
1281 source "drivers/hid/Kconfig"
1283 source "drivers/usb/Kconfig"
1285 source "drivers/uwb/Kconfig"
1287 source "drivers/mmc/Kconfig"
1289 source "drivers/memstick/Kconfig"
1291 source "drivers/accessibility/Kconfig"
1293 source "drivers/leds/Kconfig"
1295 source "drivers/rtc/Kconfig"
1297 source "drivers/dma/Kconfig"
1299 source "drivers/dca/Kconfig"
1301 source "drivers/auxdisplay/Kconfig"
1303 source "drivers/regulator/Kconfig"
1305 source "drivers/uio/Kconfig"
1311 source "arch/arm/Kconfig.debug"
1313 source "security/Kconfig"
1315 source "crypto/Kconfig"
1317 source "lib/Kconfig"