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
50 config ARCH_USES_GETTIMEOFFSET
54 config GENERIC_CLOCKEVENTS
57 config GENERIC_CLOCKEVENTS_BROADCAST
59 depends on GENERIC_CLOCKEVENTS
64 select GENERIC_ALLOCATOR
75 The Extended Industry Standard Architecture (EISA) bus was
76 developed as an open alternative to the IBM MicroChannel bus.
78 The EISA bus provided some of the features of the IBM MicroChannel
79 bus while maintaining backward compatibility with cards made for
80 the older ISA bus. The EISA bus saw limited use between 1988 and
81 1995 when it was made obsolete by the PCI bus.
83 Say Y here if you are building a kernel for an EISA-based machine.
93 MicroChannel Architecture is found in some IBM PS/2 machines and
94 laptops. It is a bus system similar to PCI or ISA. See
95 <file:Documentation/mca.txt> (and especially the web page given
96 there) before attempting to build an MCA bus kernel.
98 config GENERIC_HARDIRQS
102 config STACKTRACE_SUPPORT
106 config HAVE_LATENCYTOP_SUPPORT
111 config LOCKDEP_SUPPORT
115 config TRACE_IRQFLAGS_SUPPORT
119 config HARDIRQS_SW_RESEND
123 config GENERIC_IRQ_PROBE
127 config GENERIC_LOCKBREAK
130 depends on SMP && PREEMPT
132 config RWSEM_GENERIC_SPINLOCK
136 config RWSEM_XCHGADD_ALGORITHM
139 config ARCH_HAS_ILOG2_U32
142 config ARCH_HAS_ILOG2_U64
145 config ARCH_HAS_CPUFREQ
148 Internal node to signify that the ARCH has CPUFREQ support
149 and that the relevant menu configurations are displayed for
152 config GENERIC_HWEIGHT
156 config GENERIC_CALIBRATE_DELAY
160 config ARCH_MAY_HAVE_PC_FDC
166 config NEED_DMA_MAP_STATE
169 config GENERIC_ISA_DMA
178 config GENERIC_HARDIRQS_NO__DO_IRQ
181 config ARM_L1_CACHE_SHIFT_6
184 Setting ARM L1 cache line size to 64 Bytes.
188 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
189 default DRAM_BASE if REMAP_VECTORS_TO_RAM
192 The base address of exception vectors.
194 source "init/Kconfig"
196 source "kernel/Kconfig.freezer"
201 bool "MMU-based Paged Memory Management Support"
204 Select if you want MMU-based virtualised addressing space
205 support by paged memory management. If unsure, say 'Y'.
208 # The "ARM system type" choice list is ordered alphabetically by option
209 # text. Please add new entries in the option alphabetic order.
212 prompt "ARM system type"
213 default ARCH_VERSATILE
216 bool "Agilent AAEC-2000 based"
220 select ARCH_USES_GETTIMEOFFSET
222 This enables support for systems based on the Agilent AAEC-2000
224 config ARCH_INTEGRATOR
225 bool "ARM Ltd. Integrator family"
227 select ARCH_HAS_CPUFREQ
230 select GENERIC_CLOCKEVENTS
231 select PLAT_VERSATILE
233 Support for ARM's Integrator platform.
236 bool "ARM Ltd. RealView family"
240 select GENERIC_CLOCKEVENTS
241 select ARCH_WANT_OPTIONAL_GPIOLIB
242 select PLAT_VERSATILE
243 select ARM_TIMER_SP804
244 select GPIO_PL061 if GPIOLIB
246 This enables support for ARM Ltd RealView boards.
248 config ARCH_VERSATILE
249 bool "ARM Ltd. Versatile family"
254 select GENERIC_CLOCKEVENTS
255 select ARCH_WANT_OPTIONAL_GPIOLIB
256 select PLAT_VERSATILE
257 select ARM_TIMER_SP804
259 This enables support for ARM Ltd Versatile board.
262 bool "ARM Ltd. Versatile Express family"
263 select ARCH_WANT_OPTIONAL_GPIOLIB
265 select ARM_TIMER_SP804
267 select GENERIC_CLOCKEVENTS
270 select PLAT_VERSATILE
272 This enables support for the ARM Ltd Versatile Express boards.
276 select ARCH_REQUIRE_GPIOLIB
278 select ARCH_USES_GETTIMEOFFSET
280 This enables support for systems based on the Atmel AT91RM9200,
281 AT91SAM9 and AT91CAP9 processors.
284 bool "Broadcom BCMRING"
289 select GENERIC_CLOCKEVENTS
290 select ARCH_WANT_OPTIONAL_GPIOLIB
292 Support for Broadcom's BCMRing platform.
295 bool "Cirrus Logic CLPS711x/EP721x-based"
297 select ARCH_USES_GETTIMEOFFSET
299 Support for Cirrus Logic 711x/721x based boards.
302 bool "Cavium Networks CNS3XXX family"
304 select GENERIC_CLOCKEVENTS
306 select PCI_DOMAINS if PCI
308 Support for Cavium Networks CNS3XXX platform.
311 bool "Cortina Systems Gemini"
313 select ARCH_REQUIRE_GPIOLIB
314 select ARCH_USES_GETTIMEOFFSET
316 Support for the Cortina Systems Gemini family SoCs
323 select ARCH_USES_GETTIMEOFFSET
325 This is an evaluation board for the StrongARM processor available
326 from Digital. It has limited hardware on-board, including an
327 Ethernet interface, two PCMCIA sockets, two serial ports and a
336 select ARCH_REQUIRE_GPIOLIB
337 select ARCH_HAS_HOLES_MEMORYMODEL
338 select ARCH_USES_GETTIMEOFFSET
340 This enables support for the Cirrus EP93xx series of CPUs.
342 config ARCH_FOOTBRIDGE
346 select ARCH_USES_GETTIMEOFFSET
348 Support for systems based on the DC21285 companion chip
349 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
352 bool "Freescale MXC/iMX-based"
353 select GENERIC_CLOCKEVENTS
354 select ARCH_REQUIRE_GPIOLIB
357 Support for Freescale MXC/iMX-based family of processors
360 bool "Freescale STMP3xxx"
363 select ARCH_REQUIRE_GPIOLIB
364 select GENERIC_CLOCKEVENTS
365 select USB_ARCH_HAS_EHCI
367 Support for systems based on the Freescale 3xxx CPUs.
370 bool "Hilscher NetX based"
373 select GENERIC_CLOCKEVENTS
375 This enables support for systems based on the Hilscher NetX Soc
378 bool "Hynix HMS720x-based"
381 select ARCH_USES_GETTIMEOFFSET
383 This enables support for systems based on the Hynix HMS720x
391 select ARCH_SUPPORTS_MSI
394 Support for Intel's IOP13XX (XScale) family of processors.
402 select ARCH_REQUIRE_GPIOLIB
404 Support for Intel's 80219 and IOP32X (XScale) family of
413 select ARCH_REQUIRE_GPIOLIB
415 Support for Intel's IOP33X (XScale) family of processors.
422 select ARCH_USES_GETTIMEOFFSET
424 Support for Intel's IXP23xx (XScale) family of processors.
427 bool "IXP2400/2800-based"
431 select ARCH_USES_GETTIMEOFFSET
433 Support for Intel's IXP2400/2800 (XScale) family of processors.
440 select GENERIC_CLOCKEVENTS
441 select DMABOUNCE if PCI
443 Support for Intel's IXP4XX (XScale) family of processors.
448 select ARCH_REQUIRE_GPIOLIB
449 select GENERIC_CLOCKEVENTS
452 Support for the Marvell Dove SoC 88AP510
455 bool "Marvell Kirkwood"
458 select ARCH_REQUIRE_GPIOLIB
459 select GENERIC_CLOCKEVENTS
462 Support for the following Marvell Kirkwood series SoCs:
463 88F6180, 88F6192 and 88F6281.
466 bool "Marvell Loki (88RC8480)"
468 select GENERIC_CLOCKEVENTS
471 Support for the Marvell Loki (88RC8480) SoC.
476 select ARCH_REQUIRE_GPIOLIB
479 select USB_ARCH_HAS_OHCI
482 select GENERIC_CLOCKEVENTS
484 Support for the NXP LPC32XX family of processors
487 bool "Marvell MV78xx0"
490 select ARCH_REQUIRE_GPIOLIB
491 select GENERIC_CLOCKEVENTS
494 Support for the following Marvell MV78xx0 series SoCs:
502 select ARCH_REQUIRE_GPIOLIB
503 select GENERIC_CLOCKEVENTS
506 Support for the following Marvell Orion 5x series SoCs:
507 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
508 Orion-2 (5281), Orion-1-90 (6183).
511 bool "Marvell PXA168/910/MMP2"
513 select ARCH_REQUIRE_GPIOLIB
515 select GENERIC_CLOCKEVENTS
519 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
522 bool "Micrel/Kendin KS8695"
524 select ARCH_REQUIRE_GPIOLIB
525 select ARCH_USES_GETTIMEOFFSET
527 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
528 System-on-Chip devices.
531 bool "NetSilicon NS9xxx"
534 select GENERIC_CLOCKEVENTS
537 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
540 <http://www.digi.com/products/microprocessors/index.jsp>
543 bool "Nuvoton W90X900 CPU"
545 select ARCH_REQUIRE_GPIOLIB
547 select GENERIC_CLOCKEVENTS
549 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
550 At present, the w90x900 has been renamed nuc900, regarding
551 the ARM series product line, you can login the following
552 link address to know more.
554 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
555 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
558 bool "Nuvoton NUC93X CPU"
562 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
563 low-power and high performance MPEG-4/JPEG multimedia controller chip.
566 bool "Philips Nexperia PNX4008 Mobile"
569 select ARCH_USES_GETTIMEOFFSET
571 This enables support for Philips PNX4008 mobile platform.
574 bool "PXA2xx/PXA3xx-based"
577 select ARCH_HAS_CPUFREQ
579 select ARCH_REQUIRE_GPIOLIB
580 select GENERIC_CLOCKEVENTS
584 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
589 select GENERIC_CLOCKEVENTS
590 select ARCH_REQUIRE_GPIOLIB
592 Support for Qualcomm MSM/QSD based systems. This runs on the
593 apps processor of the MSM/QSD and depends on a shared memory
594 interface to the modem processor which runs the baseband
595 stack and controls some vital subsystems
596 (clock and power control, etc).
599 bool "Renesas SH-Mobile"
601 Support for Renesas's SH-Mobile ARM platforms
608 select ARCH_MAY_HAVE_PC_FDC
609 select HAVE_PATA_PLATFORM
612 select ARCH_SPARSEMEM_ENABLE
613 select ARCH_USES_GETTIMEOFFSET
615 On the Acorn Risc-PC, Linux can support the internal IDE disk and
616 CD-ROM interface, serial and parallel port, and the floppy drive.
622 select ARCH_SPARSEMEM_ENABLE
624 select ARCH_HAS_CPUFREQ
626 select GENERIC_CLOCKEVENTS
629 select ARCH_REQUIRE_GPIOLIB
631 Support for StrongARM 11x0 based boards.
634 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
636 select ARCH_HAS_CPUFREQ
638 select ARCH_USES_GETTIMEOFFSET
640 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
641 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
642 the Samsung SMDK2410 development board (and derivatives).
644 Note, the S3C2416 and the S3C2450 are so close that they even share
645 the same SoC ID code. This means that there is no seperate machine
646 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
649 bool "Samsung S3C64XX"
655 select ARCH_USES_GETTIMEOFFSET
656 select ARCH_HAS_CPUFREQ
657 select ARCH_REQUIRE_GPIOLIB
658 select SAMSUNG_CLKSRC
659 select SAMSUNG_IRQ_VIC_TIMER
660 select SAMSUNG_IRQ_UART
661 select S3C_GPIO_TRACK
662 select S3C_GPIO_PULL_UPDOWN
663 select S3C_GPIO_CFG_S3C24XX
664 select S3C_GPIO_CFG_S3C64XX
666 select USB_ARCH_HAS_OHCI
667 select SAMSUNG_GPIOLIB_4BIT
669 Samsung S3C64XX series based systems
672 bool "Samsung S5P6440"
676 select ARCH_USES_GETTIMEOFFSET
678 Samsung S5P6440 CPU based systems
681 bool "Samsung S5P6442"
685 select ARCH_USES_GETTIMEOFFSET
687 Samsung S5P6442 CPU based systems
690 bool "Samsung S5PC100"
694 select ARM_L1_CACHE_SHIFT_6
695 select ARCH_USES_GETTIMEOFFSET
697 Samsung S5PC100 series based systems
700 bool "Samsung S5PV210/S5PC110"
704 select ARM_L1_CACHE_SHIFT_6
705 select ARCH_USES_GETTIMEOFFSET
707 Samsung S5PV210/S5PC110 series based systems
716 select ARCH_USES_GETTIMEOFFSET
718 Support for the StrongARM based Digital DNARD machine, also known
719 as "Shark" (<http://www.shark-linux.de/shark.html>).
724 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
725 select ARCH_USES_GETTIMEOFFSET
727 Say Y here for systems based on one of the Sharp LH7A40X
728 System on a Chip processors. These CPUs include an ARM922T
729 core with a wide array of integrated devices for
730 hand-held and low-power applications.
733 bool "ST-Ericsson U300 Series"
739 select GENERIC_CLOCKEVENTS
743 Support for ST-Ericsson U300 series mobile platforms.
746 bool "ST-Ericsson U8500 Series"
749 select GENERIC_CLOCKEVENTS
751 select ARCH_REQUIRE_GPIOLIB
753 Support for ST-Ericsson's Ux500 architecture
756 bool "STMicroelectronics Nomadik"
761 select GENERIC_CLOCKEVENTS
762 select ARCH_REQUIRE_GPIOLIB
764 Support for the Nomadik platform by ST-Ericsson
768 select GENERIC_CLOCKEVENTS
769 select ARCH_REQUIRE_GPIOLIB
773 select GENERIC_ALLOCATOR
774 select ARCH_HAS_HOLES_MEMORYMODEL
776 Support for TI's DaVinci platform.
781 select ARCH_REQUIRE_GPIOLIB
782 select ARCH_HAS_CPUFREQ
783 select GENERIC_CLOCKEVENTS
784 select ARCH_HAS_HOLES_MEMORYMODEL
786 Support for TI's OMAP platform (OMAP1 and OMAP2).
791 select ARCH_REQUIRE_GPIOLIB
793 select GENERIC_CLOCKEVENTS
796 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
801 # This is sorted alphabetically by mach-* pathname. However, plat-*
802 # Kconfigs may be included either alphabetically (according to the
803 # plat- suffix) or along side the corresponding mach-* source.
805 source "arch/arm/mach-aaec2000/Kconfig"
807 source "arch/arm/mach-at91/Kconfig"
809 source "arch/arm/mach-bcmring/Kconfig"
811 source "arch/arm/mach-clps711x/Kconfig"
813 source "arch/arm/mach-cns3xxx/Kconfig"
815 source "arch/arm/mach-davinci/Kconfig"
817 source "arch/arm/mach-dove/Kconfig"
819 source "arch/arm/mach-ep93xx/Kconfig"
821 source "arch/arm/mach-footbridge/Kconfig"
823 source "arch/arm/mach-gemini/Kconfig"
825 source "arch/arm/mach-h720x/Kconfig"
827 source "arch/arm/mach-integrator/Kconfig"
829 source "arch/arm/mach-iop32x/Kconfig"
831 source "arch/arm/mach-iop33x/Kconfig"
833 source "arch/arm/mach-iop13xx/Kconfig"
835 source "arch/arm/mach-ixp4xx/Kconfig"
837 source "arch/arm/mach-ixp2000/Kconfig"
839 source "arch/arm/mach-ixp23xx/Kconfig"
841 source "arch/arm/mach-kirkwood/Kconfig"
843 source "arch/arm/mach-ks8695/Kconfig"
845 source "arch/arm/mach-lh7a40x/Kconfig"
847 source "arch/arm/mach-loki/Kconfig"
849 source "arch/arm/mach-lpc32xx/Kconfig"
851 source "arch/arm/mach-msm/Kconfig"
853 source "arch/arm/mach-mv78xx0/Kconfig"
855 source "arch/arm/plat-mxc/Kconfig"
857 source "arch/arm/mach-netx/Kconfig"
859 source "arch/arm/mach-nomadik/Kconfig"
860 source "arch/arm/plat-nomadik/Kconfig"
862 source "arch/arm/mach-ns9xxx/Kconfig"
864 source "arch/arm/mach-nuc93x/Kconfig"
866 source "arch/arm/plat-omap/Kconfig"
868 source "arch/arm/mach-omap1/Kconfig"
870 source "arch/arm/mach-omap2/Kconfig"
872 source "arch/arm/mach-orion5x/Kconfig"
874 source "arch/arm/mach-pxa/Kconfig"
875 source "arch/arm/plat-pxa/Kconfig"
877 source "arch/arm/mach-mmp/Kconfig"
879 source "arch/arm/mach-realview/Kconfig"
881 source "arch/arm/mach-sa1100/Kconfig"
883 source "arch/arm/plat-samsung/Kconfig"
884 source "arch/arm/plat-s3c24xx/Kconfig"
885 source "arch/arm/plat-s5p/Kconfig"
887 source "arch/arm/plat-spear/Kconfig"
890 source "arch/arm/mach-s3c2400/Kconfig"
891 source "arch/arm/mach-s3c2410/Kconfig"
892 source "arch/arm/mach-s3c2412/Kconfig"
893 source "arch/arm/mach-s3c2416/Kconfig"
894 source "arch/arm/mach-s3c2440/Kconfig"
895 source "arch/arm/mach-s3c2443/Kconfig"
899 source "arch/arm/mach-s3c64xx/Kconfig"
902 source "arch/arm/mach-s5p6440/Kconfig"
904 source "arch/arm/mach-s5p6442/Kconfig"
906 source "arch/arm/mach-s5pc100/Kconfig"
908 source "arch/arm/mach-s5pv210/Kconfig"
910 source "arch/arm/mach-shmobile/Kconfig"
912 source "arch/arm/plat-stmp3xxx/Kconfig"
914 source "arch/arm/mach-u300/Kconfig"
916 source "arch/arm/mach-ux500/Kconfig"
918 source "arch/arm/mach-versatile/Kconfig"
920 source "arch/arm/mach-vexpress/Kconfig"
922 source "arch/arm/mach-w90x900/Kconfig"
924 # Definitions to make life easier
930 select GENERIC_CLOCKEVENTS
938 config PLAT_VERSATILE
941 config ARM_TIMER_SP804
944 source arch/arm/mm/Kconfig
947 bool "Enable iWMMXt support"
948 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
949 default y if PXA27x || PXA3xx || ARCH_MMP
951 Enable support for iWMMXt context switching at run time if
952 running on a CPU that supports it.
954 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
957 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
961 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
962 (!ARCH_OMAP3 || OMAP3_EMU)
967 source "arch/arm/Kconfig-nommu"
970 config ARM_ERRATA_411920
971 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
972 depends on CPU_V6 && !SMP
974 Invalidation of the Instruction Cache operation can
975 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
976 It does not affect the MPCore. This option enables the ARM Ltd.
977 recommended workaround.
979 config ARM_ERRATA_430973
980 bool "ARM errata: Stale prediction on replaced interworking branch"
983 This option enables the workaround for the 430973 Cortex-A8
984 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
985 interworking branch is replaced with another code sequence at the
986 same virtual address, whether due to self-modifying code or virtual
987 to physical address re-mapping, Cortex-A8 does not recover from the
988 stale interworking branch prediction. This results in Cortex-A8
989 executing the new code sequence in the incorrect ARM or Thumb state.
990 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
991 and also flushes the branch target cache at every context switch.
992 Note that setting specific bits in the ACTLR register may not be
993 available in non-secure mode.
995 config ARM_ERRATA_458693
996 bool "ARM errata: Processor deadlock when a false hazard is created"
999 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1000 erratum. For very specific sequences of memory operations, it is
1001 possible for a hazard condition intended for a cache line to instead
1002 be incorrectly associated with a different cache line. This false
1003 hazard might then cause a processor deadlock. The workaround enables
1004 the L1 caching of the NEON accesses and disables the PLD instruction
1005 in the ACTLR register. Note that setting specific bits in the ACTLR
1006 register may not be available in non-secure mode.
1008 config ARM_ERRATA_460075
1009 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1012 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1013 erratum. Any asynchronous access to the L2 cache may encounter a
1014 situation in which recent store transactions to the L2 cache are lost
1015 and overwritten with stale memory contents from external memory. The
1016 workaround disables the write-allocate mode for the L2 cache via the
1017 ACTLR register. Note that setting specific bits in the ACTLR register
1018 may not be available in non-secure mode.
1020 config PL310_ERRATA_588369
1021 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1022 depends on CACHE_L2X0 && ARCH_OMAP4
1024 The PL310 L2 cache controller implements three types of Clean &
1025 Invalidate maintenance operations: by Physical Address
1026 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1027 They are architecturally defined to behave as the execution of a
1028 clean operation followed immediately by an invalidate operation,
1029 both performing to the same memory location. This functionality
1030 is not correctly implemented in PL310 as clean lines are not
1031 invalidated as a result of these operations. Note that this errata
1032 uses Texas Instrument's secure monitor api.
1035 source "arch/arm/common/Kconfig"
1045 Find out whether you have ISA slots on your motherboard. ISA is the
1046 name of a bus system, i.e. the way the CPU talks to the other stuff
1047 inside your box. Other bus systems are PCI, EISA, MicroChannel
1048 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1049 newer boards don't support it. If you have ISA, say Y, otherwise N.
1051 # Select ISA DMA controller support
1056 # Select ISA DMA interface
1061 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1063 Find out whether you have a PCI motherboard. PCI is the name of a
1064 bus system, i.e. the way the CPU talks to the other stuff inside
1065 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1066 VESA. If you have PCI, say Y, otherwise N.
1075 # Select the host bridge type
1076 config PCI_HOST_VIA82C505
1078 depends on PCI && ARCH_SHARK
1081 config PCI_HOST_ITE8152
1083 depends on PCI && MACH_ARMCORE
1087 source "drivers/pci/Kconfig"
1089 source "drivers/pcmcia/Kconfig"
1093 menu "Kernel Features"
1095 source "kernel/time/Kconfig"
1098 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1099 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1100 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1101 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1102 depends on GENERIC_CLOCKEVENTS
1103 select USE_GENERIC_SMP_HELPERS
1104 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1106 This enables support for systems with more than one CPU. If you have
1107 a system with only one CPU, like most personal computers, say N. If
1108 you have a system with more than one CPU, say Y.
1110 If you say N here, the kernel will run on single and multiprocessor
1111 machines, but will use only one CPU of a multiprocessor machine. If
1112 you say Y here, the kernel will run on many, but not all, single
1113 processor machines. On a single processor machine, the kernel will
1114 run faster if you say N here.
1116 See also <file:Documentation/i386/IO-APIC.txt>,
1117 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1118 <http://www.linuxdoc.org/docs.html#howto>.
1120 If you don't know what to do here, say N.
1126 This option enables support for the ARM system coherency unit
1132 This options enables support for the ARM timer and watchdog unit
1135 prompt "Memory split"
1138 Select the desired split between kernel and user memory.
1140 If you are not absolutely sure what you are doing, leave this
1144 bool "3G/1G user/kernel split"
1146 bool "2G/2G user/kernel split"
1148 bool "1G/3G user/kernel split"
1153 default 0x40000000 if VMSPLIT_1G
1154 default 0x80000000 if VMSPLIT_2G
1158 int "Maximum number of CPUs (2-32)"
1164 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1165 depends on SMP && HOTPLUG && EXPERIMENTAL
1167 Say Y here to experiment with turning CPUs off and on. CPUs
1168 can be controlled through /sys/devices/system/cpu.
1171 bool "Use local timer interrupts"
1172 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1173 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1174 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1176 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_VEXPRESS || ARCH_OMAP4 || ARCH_U8500)
1178 Enable support for local timers on SMP platforms, rather then the
1179 legacy IPI broadcast method. Local timers allows the system
1180 accounting to be spread across the timer interval, preventing a
1181 "thundering herd" at every timer tick.
1183 source kernel/Kconfig.preempt
1187 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1188 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1189 default AT91_TIMER_HZ if ARCH_AT91
1190 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1193 config THUMB2_KERNEL
1194 bool "Compile the kernel in Thumb-2 mode"
1195 depends on CPU_V7 && EXPERIMENTAL
1197 select ARM_ASM_UNIFIED
1199 By enabling this option, the kernel will be compiled in
1200 Thumb-2 mode. A compiler/assembler that understand the unified
1201 ARM-Thumb syntax is needed.
1205 config ARM_ASM_UNIFIED
1209 bool "Use the ARM EABI to compile the kernel"
1211 This option allows for the kernel to be compiled using the latest
1212 ARM ABI (aka EABI). This is only useful if you are using a user
1213 space environment that is also compiled with EABI.
1215 Since there are major incompatibilities between the legacy ABI and
1216 EABI, especially with regard to structure member alignment, this
1217 option also changes the kernel syscall calling convention to
1218 disambiguate both ABIs and allow for backward compatibility support
1219 (selected with CONFIG_OABI_COMPAT).
1221 To use this you need GCC version 4.0.0 or later.
1224 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1225 depends on AEABI && EXPERIMENTAL
1228 This option preserves the old syscall interface along with the
1229 new (ARM EABI) one. It also provides a compatibility layer to
1230 intercept syscalls that have structure arguments which layout
1231 in memory differs between the legacy ABI and the new ARM EABI
1232 (only for non "thumb" binaries). This option adds a tiny
1233 overhead to all syscalls and produces a slightly larger kernel.
1234 If you know you'll be using only pure EABI user space then you
1235 can say N here. If this option is not selected and you attempt
1236 to execute a legacy ABI binary then the result will be
1237 UNPREDICTABLE (in fact it can be predicted that it won't work
1238 at all). If in doubt say Y.
1240 config ARCH_HAS_HOLES_MEMORYMODEL
1243 config ARCH_SPARSEMEM_ENABLE
1246 config ARCH_SPARSEMEM_DEFAULT
1247 def_bool ARCH_SPARSEMEM_ENABLE
1249 config ARCH_SELECT_MEMORY_MODEL
1250 def_bool ARCH_SPARSEMEM_ENABLE
1253 bool "High Memory Support (EXPERIMENTAL)"
1254 depends on MMU && EXPERIMENTAL
1256 The address space of ARM processors is only 4 Gigabytes large
1257 and it has to accommodate user address space, kernel address
1258 space as well as some memory mapped IO. That means that, if you
1259 have a large amount of physical memory and/or IO, not all of the
1260 memory can be "permanently mapped" by the kernel. The physical
1261 memory that is not permanently mapped is called "high memory".
1263 Depending on the selected kernel/user memory split, minimum
1264 vmalloc space and actual amount of RAM, you may not need this
1265 option which should result in a slightly faster kernel.
1270 bool "Allocate 2nd-level pagetables from highmem"
1272 depends on !OUTER_CACHE
1274 config HW_PERF_EVENTS
1275 bool "Enable hardware performance counter support for perf events"
1276 depends on PERF_EVENTS && CPU_HAS_PMU
1279 Enable hardware performance counter support for perf events. If
1280 disabled, perf events will use software events only.
1285 This enables support for sparse irqs. This is useful in general
1286 as most CPUs have a fairly sparse array of IRQ vectors, which
1287 the irq_desc then maps directly on to. Systems with a high
1288 number of off-chip IRQs will want to treat this as
1289 experimental until they have been independently verified.
1293 config FORCE_MAX_ZONEORDER
1294 int "Maximum zone order" if ARCH_SHMOBILE
1295 range 11 64 if ARCH_SHMOBILE
1296 default "9" if SA1111
1299 The kernel memory allocator divides physically contiguous memory
1300 blocks into "zones", where each zone is a power of two number of
1301 pages. This option selects the largest power of two that the kernel
1302 keeps in the memory allocator. If you need to allocate very large
1303 blocks of physically contiguous memory, then you may need to
1304 increase this value.
1306 This config option is actually maximum order plus one. For example,
1307 a value of 11 means that the largest free memory block is 2^10 pages.
1310 bool "Timer and CPU usage LEDs"
1311 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1312 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1313 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1314 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1315 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1316 ARCH_AT91 || ARCH_DAVINCI || \
1317 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1319 If you say Y here, the LEDs on your machine will be used
1320 to provide useful information about your current system status.
1322 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1323 be able to select which LEDs are active using the options below. If
1324 you are compiling a kernel for the EBSA-110 or the LART however, the
1325 red LED will simply flash regularly to indicate that the system is
1326 still functional. It is safe to say Y here if you have a CATS
1327 system, but the driver will do nothing.
1330 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1331 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1332 || MACH_OMAP_PERSEUS2
1334 depends on !GENERIC_CLOCKEVENTS
1335 default y if ARCH_EBSA110
1337 If you say Y here, one of the system LEDs (the green one on the
1338 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1339 will flash regularly to indicate that the system is still
1340 operational. This is mainly useful to kernel hackers who are
1341 debugging unstable kernels.
1343 The LART uses the same LED for both Timer LED and CPU usage LED
1344 functions. You may choose to use both, but the Timer LED function
1345 will overrule the CPU usage LED.
1348 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1350 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1351 || MACH_OMAP_PERSEUS2
1354 If you say Y here, the red LED will be used to give a good real
1355 time indication of CPU usage, by lighting whenever the idle task
1356 is not currently executing.
1358 The LART uses the same LED for both Timer LED and CPU usage LED
1359 functions. You may choose to use both, but the Timer LED function
1360 will overrule the CPU usage LED.
1362 config ALIGNMENT_TRAP
1364 depends on CPU_CP15_MMU
1365 default y if !ARCH_EBSA110
1366 select HAVE_PROC_CPU if PROC_FS
1368 ARM processors cannot fetch/store information which is not
1369 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1370 address divisible by 4. On 32-bit ARM processors, these non-aligned
1371 fetch/store instructions will be emulated in software if you say
1372 here, which has a severe performance impact. This is necessary for
1373 correct operation of some network protocols. With an IP-only
1374 configuration it is safe to say N, otherwise say Y.
1376 config UACCESS_WITH_MEMCPY
1377 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1378 depends on MMU && EXPERIMENTAL
1379 default y if CPU_FEROCEON
1381 Implement faster copy_to_user and clear_user methods for CPU
1382 cores where a 8-word STM instruction give significantly higher
1383 memory write throughput than a sequence of individual 32bit stores.
1385 A possible side effect is a slight increase in scheduling latency
1386 between threads sharing the same address space if they invoke
1387 such copy operations with large buffers.
1389 However, if the CPU data cache is using a write-allocate mode,
1390 this option is unlikely to provide any performance gain.
1392 config CC_STACKPROTECTOR
1393 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1395 This option turns on the -fstack-protector GCC feature. This
1396 feature puts, at the beginning of functions, a canary value on
1397 the stack just before the return address, and validates
1398 the value just before actually returning. Stack based buffer
1399 overflows (that need to overwrite this return address) now also
1400 overwrite the canary, which gets detected and the attack is then
1401 neutralized via a kernel panic.
1402 This feature requires gcc version 4.2 or above.
1404 config DEPRECATED_PARAM_STRUCT
1405 bool "Provide old way to pass kernel parameters"
1407 This was deprecated in 2001 and announced to live on for 5 years.
1408 Some old boot loaders still use this way.
1414 # Compressed boot loader in ROM. Yes, we really want to ask about
1415 # TEXT and BSS so we preserve their values in the config files.
1416 config ZBOOT_ROM_TEXT
1417 hex "Compressed ROM boot loader base address"
1420 The physical address at which the ROM-able zImage is to be
1421 placed in the target. Platforms which normally make use of
1422 ROM-able zImage formats normally set this to a suitable
1423 value in their defconfig file.
1425 If ZBOOT_ROM is not enabled, this has no effect.
1427 config ZBOOT_ROM_BSS
1428 hex "Compressed ROM boot loader BSS address"
1431 The base address of an area of read/write memory in the target
1432 for the ROM-able zImage which must be available while the
1433 decompressor is running. It must be large enough to hold the
1434 entire decompressed kernel plus an additional 128 KiB.
1435 Platforms which normally make use of ROM-able zImage formats
1436 normally set this to a suitable value in their defconfig file.
1438 If ZBOOT_ROM is not enabled, this has no effect.
1441 bool "Compressed boot loader in ROM/flash"
1442 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1444 Say Y here if you intend to execute your compressed kernel image
1445 (zImage) directly from ROM or flash. If unsure, say N.
1448 string "Default kernel command string"
1451 On some architectures (EBSA110 and CATS), there is currently no way
1452 for the boot loader to pass arguments to the kernel. For these
1453 architectures, you should supply some command-line options at build
1454 time by entering them here. As a minimum, you should specify the
1455 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1457 config CMDLINE_FORCE
1458 bool "Always use the default kernel command string"
1459 depends on CMDLINE != ""
1461 Always use the default kernel command string, even if the boot
1462 loader passes other arguments to the kernel.
1463 This is useful if you cannot or don't want to change the
1464 command-line options your boot loader passes to the kernel.
1469 bool "Kernel Execute-In-Place from ROM"
1470 depends on !ZBOOT_ROM
1472 Execute-In-Place allows the kernel to run from non-volatile storage
1473 directly addressable by the CPU, such as NOR flash. This saves RAM
1474 space since the text section of the kernel is not loaded from flash
1475 to RAM. Read-write sections, such as the data section and stack,
1476 are still copied to RAM. The XIP kernel is not compressed since
1477 it has to run directly from flash, so it will take more space to
1478 store it. The flash address used to link the kernel object files,
1479 and for storing it, is configuration dependent. Therefore, if you
1480 say Y here, you must know the proper physical address where to
1481 store the kernel image depending on your own flash memory usage.
1483 Also note that the make target becomes "make xipImage" rather than
1484 "make zImage" or "make Image". The final kernel binary to put in
1485 ROM memory will be arch/arm/boot/xipImage.
1489 config XIP_PHYS_ADDR
1490 hex "XIP Kernel Physical Location"
1491 depends on XIP_KERNEL
1492 default "0x00080000"
1494 This is the physical address in your flash memory the kernel will
1495 be linked for and stored to. This address is dependent on your
1499 bool "Kexec system call (EXPERIMENTAL)"
1500 depends on EXPERIMENTAL
1502 kexec is a system call that implements the ability to shutdown your
1503 current kernel, and to start another kernel. It is like a reboot
1504 but it is independent of the system firmware. And like a reboot
1505 you can start any kernel with it, not just Linux.
1507 It is an ongoing process to be certain the hardware in a machine
1508 is properly shutdown, so do not be surprised if this code does not
1509 initially work for you. It may help to enable device hotplugging
1513 bool "Export atags in procfs"
1517 Should the atags used to boot the kernel be exported in an "atags"
1518 file in procfs. Useful with kexec.
1520 config AUTO_ZRELADDR
1521 bool "Auto calculation of the decompressed kernel image address"
1522 depends on !ZBOOT_ROM && !ARCH_U300
1524 ZRELADDR is the physical address where the decompressed kernel
1525 image will be placed. If AUTO_ZRELADDR is selected, the address
1526 will be determined at run-time by masking the current IP with
1527 0xf8000000. This assumes the zImage being placed in the first 128MB
1528 from start of memory.
1531 hex "Physical address of the decompressed kernel image"
1532 depends on !AUTO_ZRELADDR
1533 default 0x00008000 if ARCH_BCMRING ||\
1558 default 0x08008000 if ARCH_MX1 ||\
1560 default 0x10008000 if ARCH_MSM ||\
1563 default 0x20008000 if ARCH_S5P6440 ||\
1567 default 0x30008000 if ARCH_S3C2410 ||\
1573 default 0x40008000 if ARCH_STMP378X ||\
1577 default 0x50008000 if ARCH_S3C64XX ||\
1579 default 0x60008000 if ARCH_VEXPRESS
1580 default 0x80008000 if ARCH_MX25 ||\
1585 default 0x90008000 if ARCH_MX5 ||\
1587 default 0xa0008000 if ARCH_IOP32X ||\
1590 default 0xc0008000 if ARCH_LH7A40X ||\
1592 default 0xf0008000 if ARCH_AAEC2000 ||\
1594 default 0xc0028000 if ARCH_CLPS711X
1595 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1596 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1597 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1598 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1599 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1600 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1601 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1602 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1603 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1604 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1605 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1606 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1607 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1608 default 0xc0208000 if ARCH_SA1100 && SA1111
1609 default 0xc0008000 if ARCH_SA1100 && !SA1111
1610 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1611 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1612 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1614 ZRELADDR is the physical address where the decompressed kernel
1615 image will be placed. ZRELADDR has to be specified when the
1616 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1621 menu "CPU Power Management"
1625 source "drivers/cpufreq/Kconfig"
1627 config CPU_FREQ_SA1100
1630 config CPU_FREQ_SA1110
1633 config CPU_FREQ_INTEGRATOR
1634 tristate "CPUfreq driver for ARM Integrator CPUs"
1635 depends on ARCH_INTEGRATOR && CPU_FREQ
1638 This enables the CPUfreq driver for ARM Integrator CPUs.
1640 For details, take a look at <file:Documentation/cpu-freq>.
1646 depends on CPU_FREQ && ARCH_PXA && PXA25x
1648 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1650 config CPU_FREQ_S3C64XX
1651 bool "CPUfreq support for Samsung S3C64XX CPUs"
1652 depends on CPU_FREQ && CPU_S3C6410
1657 Internal configuration node for common cpufreq on Samsung SoC
1659 config CPU_FREQ_S3C24XX
1660 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1661 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1664 This enables the CPUfreq driver for the Samsung S3C24XX family
1667 For details, take a look at <file:Documentation/cpu-freq>.
1671 config CPU_FREQ_S3C24XX_PLL
1672 bool "Support CPUfreq changing of PLL frequency"
1673 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1675 Compile in support for changing the PLL frequency from the
1676 S3C24XX series CPUfreq driver. The PLL takes time to settle
1677 after a frequency change, so by default it is not enabled.
1679 This also means that the PLL tables for the selected CPU(s) will
1680 be built which may increase the size of the kernel image.
1682 config CPU_FREQ_S3C24XX_DEBUG
1683 bool "Debug CPUfreq Samsung driver core"
1684 depends on CPU_FREQ_S3C24XX
1686 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1688 config CPU_FREQ_S3C24XX_IODEBUG
1689 bool "Debug CPUfreq Samsung driver IO timing"
1690 depends on CPU_FREQ_S3C24XX
1692 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1694 config CPU_FREQ_S3C24XX_DEBUGFS
1695 bool "Export debugfs for CPUFreq"
1696 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1698 Export status information via debugfs.
1702 source "drivers/cpuidle/Kconfig"
1706 menu "Floating point emulation"
1708 comment "At least one emulation must be selected"
1711 bool "NWFPE math emulation"
1712 depends on !AEABI || OABI_COMPAT
1714 Say Y to include the NWFPE floating point emulator in the kernel.
1715 This is necessary to run most binaries. Linux does not currently
1716 support floating point hardware so you need to say Y here even if
1717 your machine has an FPA or floating point co-processor podule.
1719 You may say N here if you are going to load the Acorn FPEmulator
1720 early in the bootup.
1723 bool "Support extended precision"
1724 depends on FPE_NWFPE
1726 Say Y to include 80-bit support in the kernel floating-point
1727 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1728 Note that gcc does not generate 80-bit operations by default,
1729 so in most cases this option only enlarges the size of the
1730 floating point emulator without any good reason.
1732 You almost surely want to say N here.
1735 bool "FastFPE math emulation (EXPERIMENTAL)"
1736 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1738 Say Y here to include the FAST floating point emulator in the kernel.
1739 This is an experimental much faster emulator which now also has full
1740 precision for the mantissa. It does not support any exceptions.
1741 It is very simple, and approximately 3-6 times faster than NWFPE.
1743 It should be sufficient for most programs. It may be not suitable
1744 for scientific calculations, but you have to check this for yourself.
1745 If you do not feel you need a faster FP emulation you should better
1749 bool "VFP-format floating point maths"
1750 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1752 Say Y to include VFP support code in the kernel. This is needed
1753 if your hardware includes a VFP unit.
1755 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1756 release notes and additional status information.
1758 Say N if your target does not have VFP hardware.
1766 bool "Advanced SIMD (NEON) Extension support"
1767 depends on VFPv3 && CPU_V7
1769 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1774 menu "Userspace binary formats"
1776 source "fs/Kconfig.binfmt"
1779 tristate "RISC OS personality"
1782 Say Y here to include the kernel code necessary if you want to run
1783 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1784 experimental; if this sounds frightening, say N and sleep in peace.
1785 You can also say M here to compile this support as a module (which
1786 will be called arthur).
1790 menu "Power management options"
1792 source "kernel/power/Kconfig"
1794 config ARCH_SUSPEND_POSSIBLE
1799 source "net/Kconfig"
1801 source "drivers/Kconfig"
1805 source "arch/arm/Kconfig.debug"
1807 source "security/Kconfig"
1809 source "crypto/Kconfig"
1811 source "lib/Kconfig"