2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
13 select SYS_SUPPORTS_APM_EMULATION
16 select HAVE_KPROBES if (!XIP_KERNEL)
17 select HAVE_KRETPROBES if (HAVE_KPROBES)
18 select HAVE_FTRACE if (!XIP_KERNEL)
19 select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
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_SUPPORTS_AOUT
146 config ARCH_MAY_HAVE_PC_FDC
152 config GENERIC_ISA_DMA
161 config GENERIC_HARDIRQS_NO__DO_IRQ
167 config OPROFILE_ARMV6
169 depends on CPU_V6 && !SMP
170 select OPROFILE_ARM11_CORE
172 config OPROFILE_MPCORE
174 depends on CPU_V6 && SMP
175 select OPROFILE_ARM11_CORE
177 config OPROFILE_ARM11_CORE
180 config OPROFILE_ARMV7
182 depends on CPU_V7 && !SMP
189 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
190 default DRAM_BASE if REMAP_VECTORS_TO_RAM
193 The base address of exception vectors.
195 source "init/Kconfig"
200 prompt "ARM system type"
201 default ARCH_VERSATILE
204 bool "Agilent AAEC-2000 based"
208 This enables support for systems based on the Agilent AAEC-2000
210 config ARCH_INTEGRATOR
211 bool "ARM Ltd. Integrator family"
216 Support for ARM's Integrator platform.
219 bool "ARM Ltd. RealView family"
224 select GENERIC_CLOCKEVENTS
226 This enables support for ARM Ltd RealView boards.
228 config ARCH_VERSATILE
229 bool "ARM Ltd. Versatile family"
235 select GENERIC_CLOCKEVENTS
237 This enables support for ARM Ltd Versatile board.
244 This enables support for systems based on the Atmel AT91RM9200,
245 AT91SAM9 and AT91CAP9 processors.
248 bool "Cirrus CL-PS7500FE"
252 select ARCH_SPARSEMEM_ENABLE
254 Support for the Cirrus Logic PS7500FE system-on-a-chip.
257 bool "Cirrus Logic CLPS711x/EP721x-based"
259 Support for Cirrus Logic 711x/721x based boards.
266 This is an evaluation board for the StrongARM processor available
267 from Digital. It has limited hardware on-board, including an
268 Ethernet interface, two PCMCIA sockets, two serial ports and a
277 select ARCH_REQUIRE_GPIOLIB
279 This enables support for the Cirrus EP93xx series of CPUs.
281 config ARCH_FOOTBRIDGE
285 Support for systems based on the DC21285 companion chip
286 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
289 bool "Hilscher NetX based"
292 This enables support for systems based on the Hilscher NetX Soc
295 bool "Hynix HMS720x-based"
298 This enables support for systems based on the Hynix HMS720x
304 select GENERIC_CLOCKEVENTS
306 Support for Motorola's i.MX family of processors (MX1, MXL).
313 select ARCH_SUPPORTS_MSI
316 Support for Intel's IOP13XX (XScale) family of processors.
324 select ARCH_REQUIRE_GPIOLIB
326 Support for Intel's 80219 and IOP32X (XScale) family of
335 select ARCH_REQUIRE_GPIOLIB
337 Support for Intel's IOP33X (XScale) family of processors.
344 Support for Intel's IXP23xx (XScale) family of processors.
347 bool "IXP2400/2800-based"
351 Support for Intel's IXP2400/2800 (XScale) family of processors.
358 select GENERIC_CLOCKEVENTS
359 select ZONE_DMA if PCI
361 Support for Intel's IXP4XX (XScale) family of processors.
367 Say Y here if you intend to run this kernel on a LinkUp Systems
368 L7200 Software Development Board which uses an ARM720T processor.
369 Information on this board can be obtained at:
371 <http://www.linkupsys.com/>
373 If you have any questions or comments about the Linux kernel port
374 to this board, send e-mail to <sjhill@cotw.com>.
377 bool "Marvell Kirkwood"
380 select GENERIC_CLOCKEVENTS
383 Support for the following Marvell Kirkwood series SoCs:
384 88F6180, 88F6192 and 88F6281.
387 bool "Micrel/Kendin KS8695"
390 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
391 System-on-Chip devices.
394 bool "NetSilicon NS9xxx"
397 select GENERIC_CLOCKEVENTS
400 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
403 <http://www.digi.com/products/microprocessors/index.jsp>
406 bool "Marvell Loki (88RC8480)"
408 select GENERIC_CLOCKEVENTS
411 Support for the Marvell Loki (88RC8480) SoC.
414 bool "Marvell MV78xx0"
417 select GENERIC_CLOCKEVENTS
420 Support for the following Marvell MV78xx0 series SoCs:
424 bool "Freescale MXC/iMX-based"
426 select GENERIC_CLOCKEVENTS
429 select ARCH_REQUIRE_GPIOLIB
431 Support for Freescale MXC/iMX-based family of processors
439 select GENERIC_CLOCKEVENTS
442 Support for the following Marvell Orion 5x series SoCs:
443 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
447 bool "Philips Nexperia PNX4008 Mobile"
450 This enables support for Philips PNX4008 mobile platform.
453 bool "PXA2xx/PXA3xx-based"
458 select ARCH_REQUIRE_GPIOLIB
460 select GENERIC_CLOCKEVENTS
463 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
470 select ARCH_MAY_HAVE_PC_FDC
471 select HAVE_PATA_PLATFORM
474 select ARCH_SPARSEMEM_ENABLE
476 On the Acorn Risc-PC, Linux can support the internal IDE disk and
477 CD-ROM interface, serial and parallel port, and the floppy drive.
482 select ARCH_SPARSEMEM_ENABLE
486 select GENERIC_CLOCKEVENTS
489 select ARCH_REQUIRE_GPIOLIB
491 Support for StrongARM 11x0 based boards.
494 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
498 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
499 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
500 the Samsung SMDK2410 development board (and derivatives).
509 Support for the StrongARM based Digital DNARD machine, also known
510 as "Shark" (<http://www.shark-linux.de/shark.html>).
514 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
515 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
517 Say Y here for systems based on one of the Sharp LH7A40X
518 System on a Chip processors. These CPUs include an ARM922T
519 core with a wide array of integrated devices for
520 hand-held and low-power applications.
525 select GENERIC_CLOCKEVENTS
530 Support for TI's DaVinci platform.
536 select ARCH_REQUIRE_GPIOLIB
538 select GENERIC_CLOCKEVENTS
540 Support for TI's OMAP platform (OMAP1 and OMAP2).
543 bool "Qualcomm MSM7X00A"
545 select GENERIC_CLOCKEVENTS
547 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
548 apps processor of the MSM7X00A and depends on a shared memory
549 interface to the ARM9 modem processor which runs the baseband stack
550 and controls some vital subsystems (clock and power control, etc).
551 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
555 source "arch/arm/mach-clps711x/Kconfig"
557 source "arch/arm/mach-ep93xx/Kconfig"
559 source "arch/arm/mach-footbridge/Kconfig"
561 source "arch/arm/mach-integrator/Kconfig"
563 source "arch/arm/mach-iop32x/Kconfig"
565 source "arch/arm/mach-iop33x/Kconfig"
567 source "arch/arm/mach-iop13xx/Kconfig"
569 source "arch/arm/mach-ixp4xx/Kconfig"
571 source "arch/arm/mach-ixp2000/Kconfig"
573 source "arch/arm/mach-ixp23xx/Kconfig"
575 source "arch/arm/mach-loki/Kconfig"
577 source "arch/arm/mach-mv78xx0/Kconfig"
579 source "arch/arm/mach-pxa/Kconfig"
581 source "arch/arm/mach-sa1100/Kconfig"
583 source "arch/arm/plat-omap/Kconfig"
585 source "arch/arm/mach-omap1/Kconfig"
587 source "arch/arm/mach-omap2/Kconfig"
589 source "arch/arm/mach-orion5x/Kconfig"
591 source "arch/arm/mach-kirkwood/Kconfig"
593 source "arch/arm/plat-s3c24xx/Kconfig"
594 source "arch/arm/plat-s3c/Kconfig"
597 source "arch/arm/mach-s3c2400/Kconfig"
598 source "arch/arm/mach-s3c2410/Kconfig"
599 source "arch/arm/mach-s3c2412/Kconfig"
600 source "arch/arm/mach-s3c2440/Kconfig"
601 source "arch/arm/mach-s3c2442/Kconfig"
602 source "arch/arm/mach-s3c2443/Kconfig"
605 source "arch/arm/mach-lh7a40x/Kconfig"
607 source "arch/arm/mach-imx/Kconfig"
609 source "arch/arm/mach-h720x/Kconfig"
611 source "arch/arm/mach-versatile/Kconfig"
613 source "arch/arm/mach-aaec2000/Kconfig"
615 source "arch/arm/mach-realview/Kconfig"
617 source "arch/arm/mach-at91/Kconfig"
619 source "arch/arm/plat-mxc/Kconfig"
621 source "arch/arm/mach-netx/Kconfig"
623 source "arch/arm/mach-ns9xxx/Kconfig"
625 source "arch/arm/mach-davinci/Kconfig"
627 source "arch/arm/mach-ks8695/Kconfig"
629 source "arch/arm/mach-msm/Kconfig"
631 # Definitions to make life easier
641 source arch/arm/mm/Kconfig
644 bool "Enable iWMMXt support"
645 depends on CPU_XSCALE || CPU_XSC3
646 default y if PXA27x || PXA3xx
648 Enable support for iWMMXt context switching at run time if
649 running on a CPU that supports it.
651 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
654 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
658 source "arch/arm/Kconfig-nommu"
663 source "arch/arm/common/Kconfig"
665 config FORCE_MAX_ZONEORDER
678 Find out whether you have ISA slots on your motherboard. ISA is the
679 name of a bus system, i.e. the way the CPU talks to the other stuff
680 inside your box. Other bus systems are PCI, EISA, MicroChannel
681 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
682 newer boards don't support it. If you have ISA, say Y, otherwise N.
684 # Select ISA DMA controller support
689 # Select ISA DMA interface
694 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
696 Find out whether you have a PCI motherboard. PCI is the name of a
697 bus system, i.e. the way the CPU talks to the other stuff inside
698 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
699 VESA. If you have PCI, say Y, otherwise N.
704 # Select the host bridge type
705 config PCI_HOST_VIA82C505
707 depends on PCI && ARCH_SHARK
710 config PCI_HOST_ITE8152
712 depends on PCI && MACH_ARMCORE
716 source "drivers/pci/Kconfig"
718 source "drivers/pcmcia/Kconfig"
722 menu "Kernel Features"
724 source "kernel/time/Kconfig"
727 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
728 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
729 select USE_GENERIC_SMP_HELPERS
731 This enables support for systems with more than one CPU. If you have
732 a system with only one CPU, like most personal computers, say N. If
733 you have a system with more than one CPU, say Y.
735 If you say N here, the kernel will run on single and multiprocessor
736 machines, but will use only one CPU of a multiprocessor machine. If
737 you say Y here, the kernel will run on many, but not all, single
738 processor machines. On a single processor machine, the kernel will
739 run faster if you say N here.
741 See also <file:Documentation/i386/IO-APIC.txt>,
742 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
743 <http://www.linuxdoc.org/docs.html#howto>.
745 If you don't know what to do here, say N.
748 prompt "Memory split"
751 Select the desired split between kernel and user memory.
753 If you are not absolutely sure what you are doing, leave this
757 bool "3G/1G user/kernel split"
759 bool "2G/2G user/kernel split"
761 bool "1G/3G user/kernel split"
766 default 0x40000000 if VMSPLIT_1G
767 default 0x80000000 if VMSPLIT_2G
771 int "Maximum number of CPUs (2-32)"
777 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
778 depends on SMP && HOTPLUG && EXPERIMENTAL
780 Say Y here to experiment with turning CPUs off and on. CPUs
781 can be controlled through /sys/devices/system/cpu.
784 bool "Use local timer interrupts"
785 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
788 Enable support for local timers on SMP platforms, rather then the
789 legacy IPI broadcast method. Local timers allows the system
790 accounting to be spread across the timer interval, preventing a
791 "thundering herd" at every timer tick.
794 bool "Preemptible Kernel (EXPERIMENTAL)"
795 depends on EXPERIMENTAL
797 This option reduces the latency of the kernel when reacting to
798 real-time or interactive events by allowing a low priority process to
799 be preempted even if it is in kernel mode executing a system call.
800 This allows applications to run more reliably even when the system is
803 Say Y here if you are building a kernel for a desktop, embedded
804 or real-time system. Say N if you are unsure.
808 default 128 if ARCH_L7200
809 default 200 if ARCH_EBSA110 || ARCH_S3C2410
810 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
811 default AT91_TIMER_HZ if ARCH_AT91
815 bool "Use the ARM EABI to compile the kernel"
817 This option allows for the kernel to be compiled using the latest
818 ARM ABI (aka EABI). This is only useful if you are using a user
819 space environment that is also compiled with EABI.
821 Since there are major incompatibilities between the legacy ABI and
822 EABI, especially with regard to structure member alignment, this
823 option also changes the kernel syscall calling convention to
824 disambiguate both ABIs and allow for backward compatibility support
825 (selected with CONFIG_OABI_COMPAT).
827 To use this you need GCC version 4.0.0 or later.
830 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
831 depends on AEABI && EXPERIMENTAL
834 This option preserves the old syscall interface along with the
835 new (ARM EABI) one. It also provides a compatibility layer to
836 intercept syscalls that have structure arguments which layout
837 in memory differs between the legacy ABI and the new ARM EABI
838 (only for non "thumb" binaries). This option adds a tiny
839 overhead to all syscalls and produces a slightly larger kernel.
840 If you know you'll be using only pure EABI user space then you
841 can say N here. If this option is not selected and you attempt
842 to execute a legacy ABI binary then the result will be
843 UNPREDICTABLE (in fact it can be predicted that it won't work
844 at all). If in doubt say Y.
846 # Discontigmem is deprecated
847 config ARCH_DISCONTIGMEM_ENABLE
850 config ARCH_SPARSEMEM_ENABLE
853 config ARCH_SPARSEMEM_DEFAULT
854 def_bool ARCH_SPARSEMEM_ENABLE
856 config ARCH_SELECT_MEMORY_MODEL
857 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
861 default "4" if ARCH_LH7A40X
863 depends on NEED_MULTIPLE_NODES
868 bool "Timer and CPU usage LEDs"
869 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
870 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
871 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
872 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
873 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
874 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
875 ARCH_KS8695 || MACH_RD88F5182
877 If you say Y here, the LEDs on your machine will be used
878 to provide useful information about your current system status.
880 If you are compiling a kernel for a NetWinder or EBSA-285, you will
881 be able to select which LEDs are active using the options below. If
882 you are compiling a kernel for the EBSA-110 or the LART however, the
883 red LED will simply flash regularly to indicate that the system is
884 still functional. It is safe to say Y here if you have a CATS
885 system, but the driver will do nothing.
888 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
889 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
890 || MACH_OMAP_PERSEUS2
892 depends on !GENERIC_CLOCKEVENTS
893 default y if ARCH_EBSA110
895 If you say Y here, one of the system LEDs (the green one on the
896 NetWinder, the amber one on the EBSA285, or the red one on the LART)
897 will flash regularly to indicate that the system is still
898 operational. This is mainly useful to kernel hackers who are
899 debugging unstable kernels.
901 The LART uses the same LED for both Timer LED and CPU usage LED
902 functions. You may choose to use both, but the Timer LED function
903 will overrule the CPU usage LED.
906 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
908 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
909 || MACH_OMAP_PERSEUS2
912 If you say Y here, the red LED will be used to give a good real
913 time indication of CPU usage, by lighting whenever the idle task
914 is not currently executing.
916 The LART uses the same LED for both Timer LED and CPU usage LED
917 functions. You may choose to use both, but the Timer LED function
918 will overrule the CPU usage LED.
920 config ALIGNMENT_TRAP
922 depends on CPU_CP15_MMU
923 default y if !ARCH_EBSA110
925 ARM processors cannot fetch/store information which is not
926 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
927 address divisible by 4. On 32-bit ARM processors, these non-aligned
928 fetch/store instructions will be emulated in software if you say
929 here, which has a severe performance impact. This is necessary for
930 correct operation of some network protocols. With an IP-only
931 configuration it is safe to say N, otherwise say Y.
937 # Compressed boot loader in ROM. Yes, we really want to ask about
938 # TEXT and BSS so we preserve their values in the config files.
939 config ZBOOT_ROM_TEXT
940 hex "Compressed ROM boot loader base address"
943 The physical address at which the ROM-able zImage is to be
944 placed in the target. Platforms which normally make use of
945 ROM-able zImage formats normally set this to a suitable
946 value in their defconfig file.
948 If ZBOOT_ROM is not enabled, this has no effect.
951 hex "Compressed ROM boot loader BSS address"
954 The base address of an area of read/write memory in the target
955 for the ROM-able zImage which must be available while the
956 decompressor is running. It must be large enough to hold the
957 entire decompressed kernel plus an additional 128 KiB.
958 Platforms which normally make use of ROM-able zImage formats
959 normally set this to a suitable value in their defconfig file.
961 If ZBOOT_ROM is not enabled, this has no effect.
964 bool "Compressed boot loader in ROM/flash"
965 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
967 Say Y here if you intend to execute your compressed kernel image
968 (zImage) directly from ROM or flash. If unsure, say N.
971 string "Default kernel command string"
974 On some architectures (EBSA110 and CATS), there is currently no way
975 for the boot loader to pass arguments to the kernel. For these
976 architectures, you should supply some command-line options at build
977 time by entering them here. As a minimum, you should specify the
978 memory size and the root device (e.g., mem=64M root=/dev/nfs).
981 bool "Kernel Execute-In-Place from ROM"
982 depends on !ZBOOT_ROM
984 Execute-In-Place allows the kernel to run from non-volatile storage
985 directly addressable by the CPU, such as NOR flash. This saves RAM
986 space since the text section of the kernel is not loaded from flash
987 to RAM. Read-write sections, such as the data section and stack,
988 are still copied to RAM. The XIP kernel is not compressed since
989 it has to run directly from flash, so it will take more space to
990 store it. The flash address used to link the kernel object files,
991 and for storing it, is configuration dependent. Therefore, if you
992 say Y here, you must know the proper physical address where to
993 store the kernel image depending on your own flash memory usage.
995 Also note that the make target becomes "make xipImage" rather than
996 "make zImage" or "make Image". The final kernel binary to put in
997 ROM memory will be arch/arm/boot/xipImage.
1001 config XIP_PHYS_ADDR
1002 hex "XIP Kernel Physical Location"
1003 depends on XIP_KERNEL
1004 default "0x00080000"
1006 This is the physical address in your flash memory the kernel will
1007 be linked for and stored to. This address is dependent on your
1011 bool "Kexec system call (EXPERIMENTAL)"
1012 depends on EXPERIMENTAL
1014 kexec is a system call that implements the ability to shutdown your
1015 current kernel, and to start another kernel. It is like a reboot
1016 but it is independent of the system firmware. And like a reboot
1017 you can start any kernel with it, not just Linux.
1019 It is an ongoing process to be certain the hardware in a machine
1020 is properly shutdown, so do not be surprised if this code does not
1021 initially work for you. It may help to enable device hotplugging
1025 bool "Export atags in procfs"
1029 Should the atags used to boot the kernel be exported in an "atags"
1030 file in procfs. Useful with kexec.
1034 menu "CPU Power Management"
1036 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1038 source "drivers/cpufreq/Kconfig"
1040 config CPU_FREQ_SA1100
1042 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1045 config CPU_FREQ_SA1110
1047 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1050 config CPU_FREQ_INTEGRATOR
1051 tristate "CPUfreq driver for ARM Integrator CPUs"
1052 depends on ARCH_INTEGRATOR && CPU_FREQ
1055 This enables the CPUfreq driver for ARM Integrator CPUs.
1057 For details, take a look at <file:Documentation/cpu-freq>.
1062 tristate "CPUfreq driver for i.MX CPUs"
1063 depends on ARCH_IMX && CPU_FREQ
1066 This enables the CPUfreq driver for i.MX CPUs.
1072 depends on CPU_FREQ && ARCH_PXA && PXA25x
1074 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1078 source "drivers/cpuidle/Kconfig"
1082 menu "Floating point emulation"
1084 comment "At least one emulation must be selected"
1087 bool "NWFPE math emulation"
1088 depends on !AEABI || OABI_COMPAT
1090 Say Y to include the NWFPE floating point emulator in the kernel.
1091 This is necessary to run most binaries. Linux does not currently
1092 support floating point hardware so you need to say Y here even if
1093 your machine has an FPA or floating point co-processor podule.
1095 You may say N here if you are going to load the Acorn FPEmulator
1096 early in the bootup.
1099 bool "Support extended precision"
1100 depends on FPE_NWFPE
1102 Say Y to include 80-bit support in the kernel floating-point
1103 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1104 Note that gcc does not generate 80-bit operations by default,
1105 so in most cases this option only enlarges the size of the
1106 floating point emulator without any good reason.
1108 You almost surely want to say N here.
1111 bool "FastFPE math emulation (EXPERIMENTAL)"
1112 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1114 Say Y here to include the FAST floating point emulator in the kernel.
1115 This is an experimental much faster emulator which now also has full
1116 precision for the mantissa. It does not support any exceptions.
1117 It is very simple, and approximately 3-6 times faster than NWFPE.
1119 It should be sufficient for most programs. It may be not suitable
1120 for scientific calculations, but you have to check this for yourself.
1121 If you do not feel you need a faster FP emulation you should better
1125 bool "VFP-format floating point maths"
1126 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1128 Say Y to include VFP support code in the kernel. This is needed
1129 if your hardware includes a VFP unit.
1131 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1132 release notes and additional status information.
1134 Say N if your target does not have VFP hardware.
1142 bool "Advanced SIMD (NEON) Extension support"
1143 depends on VFPv3 && CPU_V7
1145 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1150 menu "Userspace binary formats"
1152 source "fs/Kconfig.binfmt"
1155 tristate "RISC OS personality"
1158 Say Y here to include the kernel code necessary if you want to run
1159 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1160 experimental; if this sounds frightening, say N and sleep in peace.
1161 You can also say M here to compile this support as a module (which
1162 will be called arthur).
1166 menu "Power management options"
1168 source "kernel/power/Kconfig"
1170 config ARCH_SUSPEND_POSSIBLE
1175 source "net/Kconfig"
1177 menu "Device Drivers"
1179 source "drivers/base/Kconfig"
1181 source "drivers/connector/Kconfig"
1183 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1184 source "drivers/mtd/Kconfig"
1187 source "drivers/parport/Kconfig"
1189 source "drivers/pnp/Kconfig"
1191 source "drivers/block/Kconfig"
1193 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1195 source "drivers/misc/Kconfig"
1197 source "drivers/ide/Kconfig"
1199 source "drivers/scsi/Kconfig"
1201 source "drivers/ata/Kconfig"
1203 source "drivers/md/Kconfig"
1205 source "drivers/message/fusion/Kconfig"
1207 source "drivers/ieee1394/Kconfig"
1209 source "drivers/message/i2o/Kconfig"
1211 source "drivers/net/Kconfig"
1213 source "drivers/isdn/Kconfig"
1215 # input before char - char/joystick depends on it. As does USB.
1217 source "drivers/input/Kconfig"
1219 source "drivers/char/Kconfig"
1221 source "drivers/i2c/Kconfig"
1223 source "drivers/spi/Kconfig"
1225 source "drivers/gpio/Kconfig"
1227 source "drivers/w1/Kconfig"
1229 source "drivers/power/Kconfig"
1231 source "drivers/hwmon/Kconfig"
1233 source "drivers/thermal/Kconfig"
1235 source "drivers/watchdog/Kconfig"
1237 source "drivers/ssb/Kconfig"
1239 #source "drivers/l3/Kconfig"
1241 source "drivers/mfd/Kconfig"
1243 source "drivers/media/Kconfig"
1245 source "drivers/video/Kconfig"
1247 source "sound/Kconfig"
1249 source "drivers/hid/Kconfig"
1251 source "drivers/usb/Kconfig"
1253 source "drivers/mmc/Kconfig"
1255 source "drivers/memstick/Kconfig"
1257 source "drivers/accessibility/Kconfig"
1259 source "drivers/leds/Kconfig"
1261 source "drivers/rtc/Kconfig"
1263 source "drivers/dma/Kconfig"
1265 source "drivers/dca/Kconfig"
1267 source "drivers/auxdisplay/Kconfig"
1269 source "drivers/regulator/Kconfig"
1271 source "drivers/uio/Kconfig"
1277 source "arch/arm/Kconfig.debug"
1279 source "security/Kconfig"
1281 source "crypto/Kconfig"
1283 source "lib/Kconfig"