2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
15 select SYS_SUPPORTS_APM_EMULATION
16 select GENERIC_ATOMIC64 if (!CPU_32v6K)
17 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
19 select HAVE_KPROBES if (!XIP_KERNEL)
20 select HAVE_KRETPROBES if (HAVE_KPROBES)
21 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
22 select HAVE_GENERIC_DMA_COHERENT
23 select HAVE_KERNEL_GZIP
24 select HAVE_KERNEL_LZO
25 select HAVE_KERNEL_LZMA
26 select HAVE_PERF_EVENTS
27 select PERF_USE_VMALLOC
28 select HAVE_REGS_AND_STACK_ACCESS_API
30 The ARM series is a line of low-power-consumption RISC chip designs
31 licensed by ARM Ltd and targeted at embedded applications and
32 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
33 manufactured, but legacy ARM-based PC hardware remains popular in
34 Europe. There is an ARM Linux project with a web page at
35 <http://www.arm.linux.org.uk/>.
40 config SYS_SUPPORTS_APM_EMULATION
46 config ARCH_USES_GETTIMEOFFSET
50 config GENERIC_CLOCKEVENTS
53 config GENERIC_CLOCKEVENTS_BROADCAST
55 depends on GENERIC_CLOCKEVENTS
60 select GENERIC_ALLOCATOR
71 The Extended Industry Standard Architecture (EISA) bus was
72 developed as an open alternative to the IBM MicroChannel bus.
74 The EISA bus provided some of the features of the IBM MicroChannel
75 bus while maintaining backward compatibility with cards made for
76 the older ISA bus. The EISA bus saw limited use between 1988 and
77 1995 when it was made obsolete by the PCI bus.
79 Say Y here if you are building a kernel for an EISA-based machine.
89 MicroChannel Architecture is found in some IBM PS/2 machines and
90 laptops. It is a bus system similar to PCI or ISA. See
91 <file:Documentation/mca.txt> (and especially the web page given
92 there) before attempting to build an MCA bus kernel.
94 config GENERIC_HARDIRQS
98 config STACKTRACE_SUPPORT
102 config HAVE_LATENCYTOP_SUPPORT
107 config LOCKDEP_SUPPORT
111 config TRACE_IRQFLAGS_SUPPORT
115 config HARDIRQS_SW_RESEND
119 config GENERIC_IRQ_PROBE
123 config GENERIC_LOCKBREAK
126 depends on SMP && PREEMPT
128 config RWSEM_GENERIC_SPINLOCK
132 config RWSEM_XCHGADD_ALGORITHM
135 config ARCH_HAS_ILOG2_U32
138 config ARCH_HAS_ILOG2_U64
141 config ARCH_HAS_CPUFREQ
144 Internal node to signify that the ARCH has CPUFREQ support
145 and that the relevant menu configurations are displayed for
148 config GENERIC_HWEIGHT
152 config GENERIC_CALIBRATE_DELAY
156 config ARCH_MAY_HAVE_PC_FDC
162 config NEED_DMA_MAP_STATE
165 config GENERIC_ISA_DMA
174 config GENERIC_HARDIRQS_NO__DO_IRQ
177 config ARM_L1_CACHE_SHIFT_6
180 Setting ARM L1 cache line size to 64 Bytes.
184 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
185 default DRAM_BASE if REMAP_VECTORS_TO_RAM
188 The base address of exception vectors.
190 source "init/Kconfig"
192 source "kernel/Kconfig.freezer"
197 bool "MMU-based Paged Memory Management Support"
200 Select if you want MMU-based virtualised addressing space
201 support by paged memory management. If unsure, say 'Y'.
204 # The "ARM system type" choice list is ordered alphabetically by option
205 # text. Please add new entries in the option alphabetic order.
208 prompt "ARM system type"
209 default ARCH_VERSATILE
212 bool "Agilent AAEC-2000 based"
216 select ARCH_USES_GETTIMEOFFSET
218 This enables support for systems based on the Agilent AAEC-2000
220 config ARCH_INTEGRATOR
221 bool "ARM Ltd. Integrator family"
223 select ARCH_HAS_CPUFREQ
226 select GENERIC_CLOCKEVENTS
227 select PLAT_VERSATILE
229 Support for ARM's Integrator platform.
232 bool "ARM Ltd. RealView family"
236 select GENERIC_CLOCKEVENTS
237 select ARCH_WANT_OPTIONAL_GPIOLIB
238 select PLAT_VERSATILE
239 select ARM_TIMER_SP804
240 select GPIO_PL061 if GPIOLIB
242 This enables support for ARM Ltd RealView boards.
244 config ARCH_VERSATILE
245 bool "ARM Ltd. Versatile family"
250 select GENERIC_CLOCKEVENTS
251 select ARCH_WANT_OPTIONAL_GPIOLIB
252 select PLAT_VERSATILE
253 select ARM_TIMER_SP804
255 This enables support for ARM Ltd Versatile board.
258 bool "ARM Ltd. Versatile Express family"
259 select ARCH_WANT_OPTIONAL_GPIOLIB
261 select ARM_TIMER_SP804
263 select GENERIC_CLOCKEVENTS
266 select PLAT_VERSATILE
268 This enables support for the ARM Ltd Versatile Express boards.
272 select ARCH_REQUIRE_GPIOLIB
274 select ARCH_USES_GETTIMEOFFSET
276 This enables support for systems based on the Atmel AT91RM9200,
277 AT91SAM9 and AT91CAP9 processors.
280 bool "Broadcom BCMRING"
285 select GENERIC_CLOCKEVENTS
286 select ARCH_WANT_OPTIONAL_GPIOLIB
288 Support for Broadcom's BCMRing platform.
291 bool "Cirrus Logic CLPS711x/EP721x-based"
293 select ARCH_USES_GETTIMEOFFSET
295 Support for Cirrus Logic 711x/721x based boards.
298 bool "Cavium Networks CNS3XXX family"
300 select GENERIC_CLOCKEVENTS
302 select PCI_DOMAINS if PCI
304 Support for Cavium Networks CNS3XXX platform.
307 bool "Cortina Systems Gemini"
309 select ARCH_REQUIRE_GPIOLIB
310 select ARCH_USES_GETTIMEOFFSET
312 Support for the Cortina Systems Gemini family SoCs
319 select ARCH_USES_GETTIMEOFFSET
321 This is an evaluation board for the StrongARM processor available
322 from Digital. It has limited hardware on-board, including an
323 Ethernet interface, two PCMCIA sockets, two serial ports and a
332 select ARCH_REQUIRE_GPIOLIB
333 select ARCH_HAS_HOLES_MEMORYMODEL
334 select ARCH_USES_GETTIMEOFFSET
336 This enables support for the Cirrus EP93xx series of CPUs.
338 config ARCH_FOOTBRIDGE
342 select ARCH_USES_GETTIMEOFFSET
344 Support for systems based on the DC21285 companion chip
345 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
348 bool "Freescale MXC/iMX-based"
349 select GENERIC_CLOCKEVENTS
350 select ARCH_REQUIRE_GPIOLIB
353 Support for Freescale MXC/iMX-based family of processors
356 bool "Freescale STMP3xxx"
359 select ARCH_REQUIRE_GPIOLIB
360 select GENERIC_CLOCKEVENTS
361 select USB_ARCH_HAS_EHCI
363 Support for systems based on the Freescale 3xxx CPUs.
366 bool "Hilscher NetX based"
369 select GENERIC_CLOCKEVENTS
371 This enables support for systems based on the Hilscher NetX Soc
374 bool "Hynix HMS720x-based"
377 select ARCH_USES_GETTIMEOFFSET
379 This enables support for systems based on the Hynix HMS720x
387 select ARCH_SUPPORTS_MSI
390 Support for Intel's IOP13XX (XScale) family of processors.
398 select ARCH_REQUIRE_GPIOLIB
400 Support for Intel's 80219 and IOP32X (XScale) family of
409 select ARCH_REQUIRE_GPIOLIB
411 Support for Intel's IOP33X (XScale) family of processors.
418 select ARCH_USES_GETTIMEOFFSET
420 Support for Intel's IXP23xx (XScale) family of processors.
423 bool "IXP2400/2800-based"
427 select ARCH_USES_GETTIMEOFFSET
429 Support for Intel's IXP2400/2800 (XScale) family of processors.
436 select GENERIC_CLOCKEVENTS
437 select DMABOUNCE if PCI
439 Support for Intel's IXP4XX (XScale) family of processors.
444 select ARCH_REQUIRE_GPIOLIB
445 select GENERIC_CLOCKEVENTS
448 Support for the Marvell Dove SoC 88AP510
451 bool "Marvell Kirkwood"
454 select ARCH_REQUIRE_GPIOLIB
455 select GENERIC_CLOCKEVENTS
458 Support for the following Marvell Kirkwood series SoCs:
459 88F6180, 88F6192 and 88F6281.
462 bool "Marvell Loki (88RC8480)"
464 select GENERIC_CLOCKEVENTS
467 Support for the Marvell Loki (88RC8480) SoC.
472 select ARCH_REQUIRE_GPIOLIB
475 select USB_ARCH_HAS_OHCI
478 select GENERIC_CLOCKEVENTS
480 Support for the NXP LPC32XX family of processors
483 bool "Marvell MV78xx0"
486 select ARCH_REQUIRE_GPIOLIB
487 select GENERIC_CLOCKEVENTS
490 Support for the following Marvell MV78xx0 series SoCs:
498 select ARCH_REQUIRE_GPIOLIB
499 select GENERIC_CLOCKEVENTS
502 Support for the following Marvell Orion 5x series SoCs:
503 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
504 Orion-2 (5281), Orion-1-90 (6183).
507 bool "Marvell PXA168/910/MMP2"
509 select ARCH_REQUIRE_GPIOLIB
511 select GENERIC_CLOCKEVENTS
515 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
518 bool "Micrel/Kendin KS8695"
520 select ARCH_REQUIRE_GPIOLIB
521 select ARCH_USES_GETTIMEOFFSET
523 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
524 System-on-Chip devices.
527 bool "NetSilicon NS9xxx"
530 select GENERIC_CLOCKEVENTS
533 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
536 <http://www.digi.com/products/microprocessors/index.jsp>
539 bool "Nuvoton W90X900 CPU"
541 select ARCH_REQUIRE_GPIOLIB
543 select GENERIC_CLOCKEVENTS
545 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
546 At present, the w90x900 has been renamed nuc900, regarding
547 the ARM series product line, you can login the following
548 link address to know more.
550 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
551 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
554 bool "Nuvoton NUC93X CPU"
558 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
559 low-power and high performance MPEG-4/JPEG multimedia controller chip.
562 bool "Philips Nexperia PNX4008 Mobile"
565 select ARCH_USES_GETTIMEOFFSET
567 This enables support for Philips PNX4008 mobile platform.
570 bool "PXA2xx/PXA3xx-based"
573 select ARCH_HAS_CPUFREQ
575 select ARCH_REQUIRE_GPIOLIB
576 select GENERIC_CLOCKEVENTS
580 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
585 select GENERIC_CLOCKEVENTS
586 select ARCH_REQUIRE_GPIOLIB
588 Support for Qualcomm MSM/QSD based systems. This runs on the
589 apps processor of the MSM/QSD and depends on a shared memory
590 interface to the modem processor which runs the baseband
591 stack and controls some vital subsystems
592 (clock and power control, etc).
595 bool "Renesas SH-Mobile"
597 Support for Renesas's SH-Mobile ARM platforms
604 select ARCH_MAY_HAVE_PC_FDC
605 select HAVE_PATA_PLATFORM
608 select ARCH_SPARSEMEM_ENABLE
609 select ARCH_USES_GETTIMEOFFSET
611 On the Acorn Risc-PC, Linux can support the internal IDE disk and
612 CD-ROM interface, serial and parallel port, and the floppy drive.
618 select ARCH_SPARSEMEM_ENABLE
620 select ARCH_HAS_CPUFREQ
622 select GENERIC_CLOCKEVENTS
625 select ARCH_REQUIRE_GPIOLIB
627 Support for StrongARM 11x0 based boards.
630 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
632 select ARCH_HAS_CPUFREQ
634 select ARCH_USES_GETTIMEOFFSET
636 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
637 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
638 the Samsung SMDK2410 development board (and derivatives).
640 Note, the S3C2416 and the S3C2450 are so close that they even share
641 the same SoC ID code. This means that there is no seperate machine
642 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
645 bool "Samsung S3C64XX"
651 select ARCH_USES_GETTIMEOFFSET
652 select ARCH_HAS_CPUFREQ
653 select ARCH_REQUIRE_GPIOLIB
654 select SAMSUNG_CLKSRC
655 select SAMSUNG_IRQ_VIC_TIMER
656 select SAMSUNG_IRQ_UART
657 select S3C_GPIO_TRACK
658 select S3C_GPIO_PULL_UPDOWN
659 select S3C_GPIO_CFG_S3C24XX
660 select S3C_GPIO_CFG_S3C64XX
662 select USB_ARCH_HAS_OHCI
663 select SAMSUNG_GPIOLIB_4BIT
665 Samsung S3C64XX series based systems
668 bool "Samsung S5P6440"
672 select ARCH_USES_GETTIMEOFFSET
674 Samsung S5P6440 CPU based systems
677 bool "Samsung S5P6442"
681 select ARCH_USES_GETTIMEOFFSET
683 Samsung S5P6442 CPU based systems
686 bool "Samsung S5PC100"
690 select ARM_L1_CACHE_SHIFT_6
691 select ARCH_USES_GETTIMEOFFSET
693 Samsung S5PC100 series based systems
696 bool "Samsung S5PV210/S5PC110"
700 select ARM_L1_CACHE_SHIFT_6
701 select ARCH_USES_GETTIMEOFFSET
703 Samsung S5PV210/S5PC110 series based systems
712 select ARCH_USES_GETTIMEOFFSET
714 Support for the StrongARM based Digital DNARD machine, also known
715 as "Shark" (<http://www.shark-linux.de/shark.html>).
720 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
721 select ARCH_USES_GETTIMEOFFSET
723 Say Y here for systems based on one of the Sharp LH7A40X
724 System on a Chip processors. These CPUs include an ARM922T
725 core with a wide array of integrated devices for
726 hand-held and low-power applications.
729 bool "ST-Ericsson U300 Series"
735 select GENERIC_CLOCKEVENTS
739 Support for ST-Ericsson U300 series mobile platforms.
742 bool "ST-Ericsson U8500 Series"
745 select GENERIC_CLOCKEVENTS
747 select ARCH_REQUIRE_GPIOLIB
749 Support for ST-Ericsson's Ux500 architecture
752 bool "STMicroelectronics Nomadik"
757 select GENERIC_CLOCKEVENTS
758 select ARCH_REQUIRE_GPIOLIB
760 Support for the Nomadik platform by ST-Ericsson
764 select GENERIC_CLOCKEVENTS
765 select ARCH_REQUIRE_GPIOLIB
769 select GENERIC_ALLOCATOR
770 select ARCH_HAS_HOLES_MEMORYMODEL
772 Support for TI's DaVinci platform.
777 select ARCH_REQUIRE_GPIOLIB
778 select ARCH_HAS_CPUFREQ
779 select GENERIC_CLOCKEVENTS
780 select ARCH_HAS_HOLES_MEMORYMODEL
782 Support for TI's OMAP platform (OMAP1 and OMAP2).
787 select ARCH_REQUIRE_GPIOLIB
789 select GENERIC_CLOCKEVENTS
792 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
797 # This is sorted alphabetically by mach-* pathname. However, plat-*
798 # Kconfigs may be included either alphabetically (according to the
799 # plat- suffix) or along side the corresponding mach-* source.
801 source "arch/arm/mach-aaec2000/Kconfig"
803 source "arch/arm/mach-at91/Kconfig"
805 source "arch/arm/mach-bcmring/Kconfig"
807 source "arch/arm/mach-clps711x/Kconfig"
809 source "arch/arm/mach-cns3xxx/Kconfig"
811 source "arch/arm/mach-davinci/Kconfig"
813 source "arch/arm/mach-dove/Kconfig"
815 source "arch/arm/mach-ep93xx/Kconfig"
817 source "arch/arm/mach-footbridge/Kconfig"
819 source "arch/arm/mach-gemini/Kconfig"
821 source "arch/arm/mach-h720x/Kconfig"
823 source "arch/arm/mach-integrator/Kconfig"
825 source "arch/arm/mach-iop32x/Kconfig"
827 source "arch/arm/mach-iop33x/Kconfig"
829 source "arch/arm/mach-iop13xx/Kconfig"
831 source "arch/arm/mach-ixp4xx/Kconfig"
833 source "arch/arm/mach-ixp2000/Kconfig"
835 source "arch/arm/mach-ixp23xx/Kconfig"
837 source "arch/arm/mach-kirkwood/Kconfig"
839 source "arch/arm/mach-ks8695/Kconfig"
841 source "arch/arm/mach-lh7a40x/Kconfig"
843 source "arch/arm/mach-loki/Kconfig"
845 source "arch/arm/mach-lpc32xx/Kconfig"
847 source "arch/arm/mach-msm/Kconfig"
849 source "arch/arm/mach-mv78xx0/Kconfig"
851 source "arch/arm/plat-mxc/Kconfig"
853 source "arch/arm/mach-netx/Kconfig"
855 source "arch/arm/mach-nomadik/Kconfig"
856 source "arch/arm/plat-nomadik/Kconfig"
858 source "arch/arm/mach-ns9xxx/Kconfig"
860 source "arch/arm/mach-nuc93x/Kconfig"
862 source "arch/arm/plat-omap/Kconfig"
864 source "arch/arm/mach-omap1/Kconfig"
866 source "arch/arm/mach-omap2/Kconfig"
868 source "arch/arm/mach-orion5x/Kconfig"
870 source "arch/arm/mach-pxa/Kconfig"
871 source "arch/arm/plat-pxa/Kconfig"
873 source "arch/arm/mach-mmp/Kconfig"
875 source "arch/arm/mach-realview/Kconfig"
877 source "arch/arm/mach-sa1100/Kconfig"
879 source "arch/arm/plat-samsung/Kconfig"
880 source "arch/arm/plat-s3c24xx/Kconfig"
881 source "arch/arm/plat-s5p/Kconfig"
883 source "arch/arm/plat-spear/Kconfig"
886 source "arch/arm/mach-s3c2400/Kconfig"
887 source "arch/arm/mach-s3c2410/Kconfig"
888 source "arch/arm/mach-s3c2412/Kconfig"
889 source "arch/arm/mach-s3c2416/Kconfig"
890 source "arch/arm/mach-s3c2440/Kconfig"
891 source "arch/arm/mach-s3c2443/Kconfig"
895 source "arch/arm/mach-s3c64xx/Kconfig"
898 source "arch/arm/mach-s5p6440/Kconfig"
900 source "arch/arm/mach-s5p6442/Kconfig"
902 source "arch/arm/mach-s5pc100/Kconfig"
904 source "arch/arm/mach-s5pv210/Kconfig"
906 source "arch/arm/mach-shmobile/Kconfig"
908 source "arch/arm/plat-stmp3xxx/Kconfig"
910 source "arch/arm/mach-u300/Kconfig"
912 source "arch/arm/mach-ux500/Kconfig"
914 source "arch/arm/mach-versatile/Kconfig"
916 source "arch/arm/mach-vexpress/Kconfig"
918 source "arch/arm/mach-w90x900/Kconfig"
920 # Definitions to make life easier
926 select GENERIC_CLOCKEVENTS
934 config PLAT_VERSATILE
937 config ARM_TIMER_SP804
940 source arch/arm/mm/Kconfig
943 bool "Enable iWMMXt support"
944 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
945 default y if PXA27x || PXA3xx || ARCH_MMP
947 Enable support for iWMMXt context switching at run time if
948 running on a CPU that supports it.
950 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
953 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
957 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
958 (!ARCH_OMAP3 || OMAP3_EMU)
963 source "arch/arm/Kconfig-nommu"
966 config ARM_ERRATA_411920
967 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
968 depends on CPU_V6 && !SMP
970 Invalidation of the Instruction Cache operation can
971 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
972 It does not affect the MPCore. This option enables the ARM Ltd.
973 recommended workaround.
975 config ARM_ERRATA_430973
976 bool "ARM errata: Stale prediction on replaced interworking branch"
979 This option enables the workaround for the 430973 Cortex-A8
980 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
981 interworking branch is replaced with another code sequence at the
982 same virtual address, whether due to self-modifying code or virtual
983 to physical address re-mapping, Cortex-A8 does not recover from the
984 stale interworking branch prediction. This results in Cortex-A8
985 executing the new code sequence in the incorrect ARM or Thumb state.
986 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
987 and also flushes the branch target cache at every context switch.
988 Note that setting specific bits in the ACTLR register may not be
989 available in non-secure mode.
991 config ARM_ERRATA_458693
992 bool "ARM errata: Processor deadlock when a false hazard is created"
995 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
996 erratum. For very specific sequences of memory operations, it is
997 possible for a hazard condition intended for a cache line to instead
998 be incorrectly associated with a different cache line. This false
999 hazard might then cause a processor deadlock. The workaround enables
1000 the L1 caching of the NEON accesses and disables the PLD instruction
1001 in the ACTLR register. Note that setting specific bits in the ACTLR
1002 register may not be available in non-secure mode.
1004 config ARM_ERRATA_460075
1005 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1008 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1009 erratum. Any asynchronous access to the L2 cache may encounter a
1010 situation in which recent store transactions to the L2 cache are lost
1011 and overwritten with stale memory contents from external memory. The
1012 workaround disables the write-allocate mode for the L2 cache via the
1013 ACTLR register. Note that setting specific bits in the ACTLR register
1014 may not be available in non-secure mode.
1016 config PL310_ERRATA_588369
1017 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1018 depends on CACHE_L2X0 && ARCH_OMAP4
1020 The PL310 L2 cache controller implements three types of Clean &
1021 Invalidate maintenance operations: by Physical Address
1022 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1023 They are architecturally defined to behave as the execution of a
1024 clean operation followed immediately by an invalidate operation,
1025 both performing to the same memory location. This functionality
1026 is not correctly implemented in PL310 as clean lines are not
1027 invalidated as a result of these operations. Note that this errata
1028 uses Texas Instrument's secure monitor api.
1031 source "arch/arm/common/Kconfig"
1041 Find out whether you have ISA slots on your motherboard. ISA is the
1042 name of a bus system, i.e. the way the CPU talks to the other stuff
1043 inside your box. Other bus systems are PCI, EISA, MicroChannel
1044 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1045 newer boards don't support it. If you have ISA, say Y, otherwise N.
1047 # Select ISA DMA controller support
1052 # Select ISA DMA interface
1057 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1059 Find out whether you have a PCI motherboard. PCI is the name of a
1060 bus system, i.e. the way the CPU talks to the other stuff inside
1061 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1062 VESA. If you have PCI, say Y, otherwise N.
1071 # Select the host bridge type
1072 config PCI_HOST_VIA82C505
1074 depends on PCI && ARCH_SHARK
1077 config PCI_HOST_ITE8152
1079 depends on PCI && MACH_ARMCORE
1083 source "drivers/pci/Kconfig"
1085 source "drivers/pcmcia/Kconfig"
1089 menu "Kernel Features"
1091 source "kernel/time/Kconfig"
1094 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1095 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1096 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1097 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1098 depends on GENERIC_CLOCKEVENTS
1099 select USE_GENERIC_SMP_HELPERS
1100 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1102 This enables support for systems with more than one CPU. If you have
1103 a system with only one CPU, like most personal computers, say N. If
1104 you have a system with more than one CPU, say Y.
1106 If you say N here, the kernel will run on single and multiprocessor
1107 machines, but will use only one CPU of a multiprocessor machine. If
1108 you say Y here, the kernel will run on many, but not all, single
1109 processor machines. On a single processor machine, the kernel will
1110 run faster if you say N here.
1112 See also <file:Documentation/i386/IO-APIC.txt>,
1113 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1114 <http://www.linuxdoc.org/docs.html#howto>.
1116 If you don't know what to do here, say N.
1122 This option enables support for the ARM system coherency unit
1128 This options enables support for the ARM timer and watchdog unit
1131 prompt "Memory split"
1134 Select the desired split between kernel and user memory.
1136 If you are not absolutely sure what you are doing, leave this
1140 bool "3G/1G user/kernel split"
1142 bool "2G/2G user/kernel split"
1144 bool "1G/3G user/kernel split"
1149 default 0x40000000 if VMSPLIT_1G
1150 default 0x80000000 if VMSPLIT_2G
1154 int "Maximum number of CPUs (2-32)"
1160 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1161 depends on SMP && HOTPLUG && EXPERIMENTAL
1163 Say Y here to experiment with turning CPUs off and on. CPUs
1164 can be controlled through /sys/devices/system/cpu.
1167 bool "Use local timer interrupts"
1168 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1169 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1170 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1172 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500)
1174 Enable support for local timers on SMP platforms, rather then the
1175 legacy IPI broadcast method. Local timers allows the system
1176 accounting to be spread across the timer interval, preventing a
1177 "thundering herd" at every timer tick.
1179 source kernel/Kconfig.preempt
1183 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1184 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1185 default AT91_TIMER_HZ if ARCH_AT91
1186 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1189 config THUMB2_KERNEL
1190 bool "Compile the kernel in Thumb-2 mode"
1191 depends on CPU_V7 && EXPERIMENTAL
1193 select ARM_ASM_UNIFIED
1195 By enabling this option, the kernel will be compiled in
1196 Thumb-2 mode. A compiler/assembler that understand the unified
1197 ARM-Thumb syntax is needed.
1201 config ARM_ASM_UNIFIED
1205 bool "Use the ARM EABI to compile the kernel"
1207 This option allows for the kernel to be compiled using the latest
1208 ARM ABI (aka EABI). This is only useful if you are using a user
1209 space environment that is also compiled with EABI.
1211 Since there are major incompatibilities between the legacy ABI and
1212 EABI, especially with regard to structure member alignment, this
1213 option also changes the kernel syscall calling convention to
1214 disambiguate both ABIs and allow for backward compatibility support
1215 (selected with CONFIG_OABI_COMPAT).
1217 To use this you need GCC version 4.0.0 or later.
1220 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1221 depends on AEABI && EXPERIMENTAL
1224 This option preserves the old syscall interface along with the
1225 new (ARM EABI) one. It also provides a compatibility layer to
1226 intercept syscalls that have structure arguments which layout
1227 in memory differs between the legacy ABI and the new ARM EABI
1228 (only for non "thumb" binaries). This option adds a tiny
1229 overhead to all syscalls and produces a slightly larger kernel.
1230 If you know you'll be using only pure EABI user space then you
1231 can say N here. If this option is not selected and you attempt
1232 to execute a legacy ABI binary then the result will be
1233 UNPREDICTABLE (in fact it can be predicted that it won't work
1234 at all). If in doubt say Y.
1236 config ARCH_HAS_HOLES_MEMORYMODEL
1239 config ARCH_SPARSEMEM_ENABLE
1242 config ARCH_SPARSEMEM_DEFAULT
1243 def_bool ARCH_SPARSEMEM_ENABLE
1245 config ARCH_SELECT_MEMORY_MODEL
1246 def_bool ARCH_SPARSEMEM_ENABLE
1249 bool "High Memory Support (EXPERIMENTAL)"
1250 depends on MMU && EXPERIMENTAL
1252 The address space of ARM processors is only 4 Gigabytes large
1253 and it has to accommodate user address space, kernel address
1254 space as well as some memory mapped IO. That means that, if you
1255 have a large amount of physical memory and/or IO, not all of the
1256 memory can be "permanently mapped" by the kernel. The physical
1257 memory that is not permanently mapped is called "high memory".
1259 Depending on the selected kernel/user memory split, minimum
1260 vmalloc space and actual amount of RAM, you may not need this
1261 option which should result in a slightly faster kernel.
1266 bool "Allocate 2nd-level pagetables from highmem"
1268 depends on !OUTER_CACHE
1270 config HW_PERF_EVENTS
1271 bool "Enable hardware performance counter support for perf events"
1272 depends on PERF_EVENTS && CPU_HAS_PMU
1275 Enable hardware performance counter support for perf events. If
1276 disabled, perf events will use software events only.
1281 This enables support for sparse irqs. This is useful in general
1282 as most CPUs have a fairly sparse array of IRQ vectors, which
1283 the irq_desc then maps directly on to. Systems with a high
1284 number of off-chip IRQs will want to treat this as
1285 experimental until they have been independently verified.
1289 config FORCE_MAX_ZONEORDER
1290 int "Maximum zone order" if ARCH_SHMOBILE
1291 range 11 64 if ARCH_SHMOBILE
1292 default "9" if SA1111
1295 The kernel memory allocator divides physically contiguous memory
1296 blocks into "zones", where each zone is a power of two number of
1297 pages. This option selects the largest power of two that the kernel
1298 keeps in the memory allocator. If you need to allocate very large
1299 blocks of physically contiguous memory, then you may need to
1300 increase this value.
1302 This config option is actually maximum order plus one. For example,
1303 a value of 11 means that the largest free memory block is 2^10 pages.
1306 bool "Timer and CPU usage LEDs"
1307 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1308 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1309 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1310 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1311 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1312 ARCH_AT91 || ARCH_DAVINCI || \
1313 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1315 If you say Y here, the LEDs on your machine will be used
1316 to provide useful information about your current system status.
1318 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1319 be able to select which LEDs are active using the options below. If
1320 you are compiling a kernel for the EBSA-110 or the LART however, the
1321 red LED will simply flash regularly to indicate that the system is
1322 still functional. It is safe to say Y here if you have a CATS
1323 system, but the driver will do nothing.
1326 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1327 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1328 || MACH_OMAP_PERSEUS2
1330 depends on !GENERIC_CLOCKEVENTS
1331 default y if ARCH_EBSA110
1333 If you say Y here, one of the system LEDs (the green one on the
1334 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1335 will flash regularly to indicate that the system is still
1336 operational. This is mainly useful to kernel hackers who are
1337 debugging unstable kernels.
1339 The LART uses the same LED for both Timer LED and CPU usage LED
1340 functions. You may choose to use both, but the Timer LED function
1341 will overrule the CPU usage LED.
1344 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1346 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1347 || MACH_OMAP_PERSEUS2
1350 If you say Y here, the red LED will be used to give a good real
1351 time indication of CPU usage, by lighting whenever the idle task
1352 is not currently executing.
1354 The LART uses the same LED for both Timer LED and CPU usage LED
1355 functions. You may choose to use both, but the Timer LED function
1356 will overrule the CPU usage LED.
1358 config ALIGNMENT_TRAP
1360 depends on CPU_CP15_MMU
1361 default y if !ARCH_EBSA110
1362 select HAVE_PROC_CPU if PROC_FS
1364 ARM processors cannot fetch/store information which is not
1365 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1366 address divisible by 4. On 32-bit ARM processors, these non-aligned
1367 fetch/store instructions will be emulated in software if you say
1368 here, which has a severe performance impact. This is necessary for
1369 correct operation of some network protocols. With an IP-only
1370 configuration it is safe to say N, otherwise say Y.
1372 config UACCESS_WITH_MEMCPY
1373 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1374 depends on MMU && EXPERIMENTAL
1375 default y if CPU_FEROCEON
1377 Implement faster copy_to_user and clear_user methods for CPU
1378 cores where a 8-word STM instruction give significantly higher
1379 memory write throughput than a sequence of individual 32bit stores.
1381 A possible side effect is a slight increase in scheduling latency
1382 between threads sharing the same address space if they invoke
1383 such copy operations with large buffers.
1385 However, if the CPU data cache is using a write-allocate mode,
1386 this option is unlikely to provide any performance gain.
1388 config CC_STACKPROTECTOR
1389 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1391 This option turns on the -fstack-protector GCC feature. This
1392 feature puts, at the beginning of functions, a canary value on
1393 the stack just before the return address, and validates
1394 the value just before actually returning. Stack based buffer
1395 overflows (that need to overwrite this return address) now also
1396 overwrite the canary, which gets detected and the attack is then
1397 neutralized via a kernel panic.
1398 This feature requires gcc version 4.2 or above.
1400 config DEPRECATED_PARAM_STRUCT
1401 bool "Provide old way to pass kernel parameters"
1403 This was deprecated in 2001 and announced to live on for 5 years.
1404 Some old boot loaders still use this way.
1410 # Compressed boot loader in ROM. Yes, we really want to ask about
1411 # TEXT and BSS so we preserve their values in the config files.
1412 config ZBOOT_ROM_TEXT
1413 hex "Compressed ROM boot loader base address"
1416 The physical address at which the ROM-able zImage is to be
1417 placed in the target. Platforms which normally make use of
1418 ROM-able zImage formats normally set this to a suitable
1419 value in their defconfig file.
1421 If ZBOOT_ROM is not enabled, this has no effect.
1423 config ZBOOT_ROM_BSS
1424 hex "Compressed ROM boot loader BSS address"
1427 The base address of an area of read/write memory in the target
1428 for the ROM-able zImage which must be available while the
1429 decompressor is running. It must be large enough to hold the
1430 entire decompressed kernel plus an additional 128 KiB.
1431 Platforms which normally make use of ROM-able zImage formats
1432 normally set this to a suitable value in their defconfig file.
1434 If ZBOOT_ROM is not enabled, this has no effect.
1437 bool "Compressed boot loader in ROM/flash"
1438 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1440 Say Y here if you intend to execute your compressed kernel image
1441 (zImage) directly from ROM or flash. If unsure, say N.
1444 string "Default kernel command string"
1447 On some architectures (EBSA110 and CATS), there is currently no way
1448 for the boot loader to pass arguments to the kernel. For these
1449 architectures, you should supply some command-line options at build
1450 time by entering them here. As a minimum, you should specify the
1451 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1453 config CMDLINE_FORCE
1454 bool "Always use the default kernel command string"
1455 depends on CMDLINE != ""
1457 Always use the default kernel command string, even if the boot
1458 loader passes other arguments to the kernel.
1459 This is useful if you cannot or don't want to change the
1460 command-line options your boot loader passes to the kernel.
1465 bool "Kernel Execute-In-Place from ROM"
1466 depends on !ZBOOT_ROM
1468 Execute-In-Place allows the kernel to run from non-volatile storage
1469 directly addressable by the CPU, such as NOR flash. This saves RAM
1470 space since the text section of the kernel is not loaded from flash
1471 to RAM. Read-write sections, such as the data section and stack,
1472 are still copied to RAM. The XIP kernel is not compressed since
1473 it has to run directly from flash, so it will take more space to
1474 store it. The flash address used to link the kernel object files,
1475 and for storing it, is configuration dependent. Therefore, if you
1476 say Y here, you must know the proper physical address where to
1477 store the kernel image depending on your own flash memory usage.
1479 Also note that the make target becomes "make xipImage" rather than
1480 "make zImage" or "make Image". The final kernel binary to put in
1481 ROM memory will be arch/arm/boot/xipImage.
1485 config XIP_PHYS_ADDR
1486 hex "XIP Kernel Physical Location"
1487 depends on XIP_KERNEL
1488 default "0x00080000"
1490 This is the physical address in your flash memory the kernel will
1491 be linked for and stored to. This address is dependent on your
1495 bool "Kexec system call (EXPERIMENTAL)"
1496 depends on EXPERIMENTAL
1498 kexec is a system call that implements the ability to shutdown your
1499 current kernel, and to start another kernel. It is like a reboot
1500 but it is independent of the system firmware. And like a reboot
1501 you can start any kernel with it, not just Linux.
1503 It is an ongoing process to be certain the hardware in a machine
1504 is properly shutdown, so do not be surprised if this code does not
1505 initially work for you. It may help to enable device hotplugging
1509 bool "Export atags in procfs"
1513 Should the atags used to boot the kernel be exported in an "atags"
1514 file in procfs. Useful with kexec.
1516 config AUTO_ZRELADDR
1517 bool "Auto calculation of the decompressed kernel image address"
1518 depends on !ZBOOT_ROM && !ARCH_U300
1520 ZRELADDR is the physical address where the decompressed kernel
1521 image will be placed. If AUTO_ZRELADDR is selected, the address
1522 will be determined at run-time by masking the current IP with
1523 0xf8000000. This assumes the zImage being placed in the first 128MB
1524 from start of memory.
1527 hex "Physical address of the decompressed kernel image"
1528 depends on !AUTO_ZRELADDR
1529 default 0x00008000 if ARCH_BCMRING ||\
1554 default 0x08008000 if ARCH_MX1 ||\
1556 default 0x10008000 if ARCH_MSM ||\
1559 default 0x20008000 if ARCH_S5P6440 ||\
1563 default 0x30008000 if ARCH_S3C2410 ||\
1569 default 0x40008000 if ARCH_STMP378X ||\
1573 default 0x50008000 if ARCH_S3C64XX ||\
1575 default 0x60008000 if ARCH_VEXPRESS
1576 default 0x80008000 if ARCH_MX25 ||\
1581 default 0x90008000 if ARCH_MX5 ||\
1583 default 0xa0008000 if ARCH_IOP32X ||\
1586 default 0xc0008000 if ARCH_LH7A40X ||\
1588 default 0xf0008000 if ARCH_AAEC2000 ||\
1590 default 0xc0028000 if ARCH_CLPS711X
1591 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1592 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1593 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1594 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1595 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1596 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1597 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1598 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1599 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1600 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1601 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1602 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1603 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1604 default 0xc0208000 if ARCH_SA1100 && SA1111
1605 default 0xc0008000 if ARCH_SA1100 && !SA1111
1606 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1607 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1608 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1610 ZRELADDR is the physical address where the decompressed kernel
1611 image will be placed. ZRELADDR has to be specified when the
1612 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1617 menu "CPU Power Management"
1621 source "drivers/cpufreq/Kconfig"
1623 config CPU_FREQ_SA1100
1626 config CPU_FREQ_SA1110
1629 config CPU_FREQ_INTEGRATOR
1630 tristate "CPUfreq driver for ARM Integrator CPUs"
1631 depends on ARCH_INTEGRATOR && CPU_FREQ
1634 This enables the CPUfreq driver for ARM Integrator CPUs.
1636 For details, take a look at <file:Documentation/cpu-freq>.
1642 depends on CPU_FREQ && ARCH_PXA && PXA25x
1644 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1646 config CPU_FREQ_S3C64XX
1647 bool "CPUfreq support for Samsung S3C64XX CPUs"
1648 depends on CPU_FREQ && CPU_S3C6410
1653 Internal configuration node for common cpufreq on Samsung SoC
1655 config CPU_FREQ_S3C24XX
1656 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1657 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1660 This enables the CPUfreq driver for the Samsung S3C24XX family
1663 For details, take a look at <file:Documentation/cpu-freq>.
1667 config CPU_FREQ_S3C24XX_PLL
1668 bool "Support CPUfreq changing of PLL frequency"
1669 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1671 Compile in support for changing the PLL frequency from the
1672 S3C24XX series CPUfreq driver. The PLL takes time to settle
1673 after a frequency change, so by default it is not enabled.
1675 This also means that the PLL tables for the selected CPU(s) will
1676 be built which may increase the size of the kernel image.
1678 config CPU_FREQ_S3C24XX_DEBUG
1679 bool "Debug CPUfreq Samsung driver core"
1680 depends on CPU_FREQ_S3C24XX
1682 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1684 config CPU_FREQ_S3C24XX_IODEBUG
1685 bool "Debug CPUfreq Samsung driver IO timing"
1686 depends on CPU_FREQ_S3C24XX
1688 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1690 config CPU_FREQ_S3C24XX_DEBUGFS
1691 bool "Export debugfs for CPUFreq"
1692 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1694 Export status information via debugfs.
1698 source "drivers/cpuidle/Kconfig"
1702 menu "Floating point emulation"
1704 comment "At least one emulation must be selected"
1707 bool "NWFPE math emulation"
1708 depends on !AEABI || OABI_COMPAT
1710 Say Y to include the NWFPE floating point emulator in the kernel.
1711 This is necessary to run most binaries. Linux does not currently
1712 support floating point hardware so you need to say Y here even if
1713 your machine has an FPA or floating point co-processor podule.
1715 You may say N here if you are going to load the Acorn FPEmulator
1716 early in the bootup.
1719 bool "Support extended precision"
1720 depends on FPE_NWFPE
1722 Say Y to include 80-bit support in the kernel floating-point
1723 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1724 Note that gcc does not generate 80-bit operations by default,
1725 so in most cases this option only enlarges the size of the
1726 floating point emulator without any good reason.
1728 You almost surely want to say N here.
1731 bool "FastFPE math emulation (EXPERIMENTAL)"
1732 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1734 Say Y here to include the FAST floating point emulator in the kernel.
1735 This is an experimental much faster emulator which now also has full
1736 precision for the mantissa. It does not support any exceptions.
1737 It is very simple, and approximately 3-6 times faster than NWFPE.
1739 It should be sufficient for most programs. It may be not suitable
1740 for scientific calculations, but you have to check this for yourself.
1741 If you do not feel you need a faster FP emulation you should better
1745 bool "VFP-format floating point maths"
1746 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1748 Say Y to include VFP support code in the kernel. This is needed
1749 if your hardware includes a VFP unit.
1751 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1752 release notes and additional status information.
1754 Say N if your target does not have VFP hardware.
1762 bool "Advanced SIMD (NEON) Extension support"
1763 depends on VFPv3 && CPU_V7
1765 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1770 menu "Userspace binary formats"
1772 source "fs/Kconfig.binfmt"
1775 tristate "RISC OS personality"
1778 Say Y here to include the kernel code necessary if you want to run
1779 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1780 experimental; if this sounds frightening, say N and sleep in peace.
1781 You can also say M here to compile this support as a module (which
1782 will be called arthur).
1786 menu "Power management options"
1788 source "kernel/power/Kconfig"
1790 config ARCH_SUSPEND_POSSIBLE
1795 source "net/Kconfig"
1797 source "drivers/Kconfig"
1801 source "arch/arm/Kconfig.debug"
1803 source "security/Kconfig"
1805 source "crypto/Kconfig"
1807 source "lib/Kconfig"