2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
14 select SYS_SUPPORTS_APM_EMULATION
15 select GENERIC_ATOMIC64 if (!CPU_32v6K)
16 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
18 select HAVE_KPROBES if (!XIP_KERNEL)
19 select HAVE_KRETPROBES if (HAVE_KPROBES)
20 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
21 select HAVE_GENERIC_DMA_COHERENT
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
24 select HAVE_KERNEL_LZMA
25 select HAVE_PERF_EVENTS
26 select PERF_USE_VMALLOC
28 The ARM series is a line of low-power-consumption RISC chip designs
29 licensed by ARM Ltd and targeted at embedded applications and
30 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
31 manufactured, but legacy ARM-based PC hardware remains popular in
32 Europe. There is an ARM Linux project with a web page at
33 <http://www.arm.linux.org.uk/>.
38 config SYS_SUPPORTS_APM_EMULATION
48 config ARCH_USES_GETTIMEOFFSET
52 config GENERIC_CLOCKEVENTS
55 config GENERIC_CLOCKEVENTS_BROADCAST
57 depends on GENERIC_CLOCKEVENTS
58 default y if SMP && !LOCAL_TIMERS
62 select GENERIC_ALLOCATOR
73 The Extended Industry Standard Architecture (EISA) bus was
74 developed as an open alternative to the IBM MicroChannel bus.
76 The EISA bus provided some of the features of the IBM MicroChannel
77 bus while maintaining backward compatibility with cards made for
78 the older ISA bus. The EISA bus saw limited use between 1988 and
79 1995 when it was made obsolete by the PCI bus.
81 Say Y here if you are building a kernel for an EISA-based machine.
91 MicroChannel Architecture is found in some IBM PS/2 machines and
92 laptops. It is a bus system similar to PCI or ISA. See
93 <file:Documentation/mca.txt> (and especially the web page given
94 there) before attempting to build an MCA bus kernel.
96 config GENERIC_HARDIRQS
100 config STACKTRACE_SUPPORT
104 config HAVE_LATENCYTOP_SUPPORT
109 config LOCKDEP_SUPPORT
113 config TRACE_IRQFLAGS_SUPPORT
117 config HARDIRQS_SW_RESEND
121 config GENERIC_IRQ_PROBE
125 config GENERIC_LOCKBREAK
128 depends on SMP && PREEMPT
130 config RWSEM_GENERIC_SPINLOCK
134 config RWSEM_XCHGADD_ALGORITHM
137 config ARCH_HAS_ILOG2_U32
140 config ARCH_HAS_ILOG2_U64
143 config ARCH_HAS_CPUFREQ
146 Internal node to signify that the ARCH has CPUFREQ support
147 and that the relevant menu configurations are displayed for
150 config GENERIC_HWEIGHT
154 config GENERIC_CALIBRATE_DELAY
158 config ARCH_MAY_HAVE_PC_FDC
164 config NEED_DMA_MAP_STATE
167 config GENERIC_ISA_DMA
176 config GENERIC_HARDIRQS_NO__DO_IRQ
179 config ARM_L1_CACHE_SHIFT_6
182 Setting ARM L1 cache line size to 64 Bytes.
186 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
187 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 The base address of exception vectors.
192 source "init/Kconfig"
194 source "kernel/Kconfig.freezer"
199 bool "MMU-based Paged Memory Management Support"
202 Select if you want MMU-based virtualised addressing space
203 support by paged memory management. If unsure, say 'Y'.
206 # The "ARM system type" choice list is ordered alphabetically by option
207 # text. Please add new entries in the option alphabetic order.
210 prompt "ARM system type"
211 default ARCH_VERSATILE
214 bool "Agilent AAEC-2000 based"
218 select ARCH_USES_GETTIMEOFFSET
220 This enables support for systems based on the Agilent AAEC-2000
222 config ARCH_INTEGRATOR
223 bool "ARM Ltd. Integrator family"
225 select ARCH_HAS_CPUFREQ
228 select GENERIC_CLOCKEVENTS
229 select PLAT_VERSATILE
231 Support for ARM's Integrator platform.
234 bool "ARM Ltd. RealView family"
238 select GENERIC_CLOCKEVENTS
239 select ARCH_WANT_OPTIONAL_GPIOLIB
240 select PLAT_VERSATILE
241 select ARM_TIMER_SP804
242 select GPIO_PL061 if GPIOLIB
244 This enables support for ARM Ltd RealView boards.
246 config ARCH_VERSATILE
247 bool "ARM Ltd. Versatile family"
252 select GENERIC_CLOCKEVENTS
253 select ARCH_WANT_OPTIONAL_GPIOLIB
254 select PLAT_VERSATILE
255 select ARM_TIMER_SP804
257 This enables support for ARM Ltd Versatile board.
260 bool "ARM Ltd. Versatile Express family"
261 select ARCH_WANT_OPTIONAL_GPIOLIB
263 select ARM_TIMER_SP804
265 select GENERIC_CLOCKEVENTS
268 select PLAT_VERSATILE
270 This enables support for the ARM Ltd Versatile Express boards.
274 select ARCH_REQUIRE_GPIOLIB
276 select ARCH_USES_GETTIMEOFFSET
278 This enables support for systems based on the Atmel AT91RM9200,
279 AT91SAM9 and AT91CAP9 processors.
282 bool "Broadcom BCMRING"
287 select GENERIC_CLOCKEVENTS
288 select ARCH_WANT_OPTIONAL_GPIOLIB
290 Support for Broadcom's BCMRing platform.
293 bool "Cirrus Logic CLPS711x/EP721x-based"
295 select ARCH_USES_GETTIMEOFFSET
297 Support for Cirrus Logic 711x/721x based boards.
300 bool "Cavium Networks CNS3XXX family"
302 select GENERIC_CLOCKEVENTS
304 select PCI_DOMAINS if PCI
306 Support for Cavium Networks CNS3XXX platform.
309 bool "Cortina Systems Gemini"
311 select ARCH_REQUIRE_GPIOLIB
312 select ARCH_USES_GETTIMEOFFSET
314 Support for the Cortina Systems Gemini family SoCs
321 select ARCH_USES_GETTIMEOFFSET
323 This is an evaluation board for the StrongARM processor available
324 from Digital. It has limited hardware on-board, including an
325 Ethernet interface, two PCMCIA sockets, two serial ports and a
334 select ARCH_REQUIRE_GPIOLIB
335 select ARCH_HAS_HOLES_MEMORYMODEL
336 select ARCH_USES_GETTIMEOFFSET
338 This enables support for the Cirrus EP93xx series of CPUs.
340 config ARCH_FOOTBRIDGE
344 select ARCH_USES_GETTIMEOFFSET
346 Support for systems based on the DC21285 companion chip
347 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
350 bool "Freescale MXC/iMX-based"
351 select GENERIC_CLOCKEVENTS
352 select ARCH_REQUIRE_GPIOLIB
355 Support for Freescale MXC/iMX-based family of processors
358 bool "Freescale STMP3xxx"
361 select ARCH_REQUIRE_GPIOLIB
362 select GENERIC_CLOCKEVENTS
363 select USB_ARCH_HAS_EHCI
365 Support for systems based on the Freescale 3xxx CPUs.
368 bool "Hilscher NetX based"
371 select GENERIC_CLOCKEVENTS
373 This enables support for systems based on the Hilscher NetX Soc
376 bool "Hynix HMS720x-based"
379 select ARCH_USES_GETTIMEOFFSET
381 This enables support for systems based on the Hynix HMS720x
389 select ARCH_SUPPORTS_MSI
392 Support for Intel's IOP13XX (XScale) family of processors.
400 select ARCH_REQUIRE_GPIOLIB
402 Support for Intel's 80219 and IOP32X (XScale) family of
411 select ARCH_REQUIRE_GPIOLIB
413 Support for Intel's IOP33X (XScale) family of processors.
420 select ARCH_USES_GETTIMEOFFSET
422 Support for Intel's IXP23xx (XScale) family of processors.
425 bool "IXP2400/2800-based"
429 select ARCH_USES_GETTIMEOFFSET
431 Support for Intel's IXP2400/2800 (XScale) family of processors.
438 select GENERIC_CLOCKEVENTS
439 select DMABOUNCE if PCI
441 Support for Intel's IXP4XX (XScale) family of processors.
447 select ARCH_USES_GETTIMEOFFSET
449 Say Y here if you intend to run this kernel on a LinkUp Systems
450 L7200 Software Development Board which uses an ARM720T processor.
451 Information on this board can be obtained at:
453 <http://www.linkupsys.com/>
455 If you have any questions or comments about the Linux kernel port
456 to this board, send e-mail to <sjhill@cotw.com>.
461 select ARCH_REQUIRE_GPIOLIB
462 select GENERIC_CLOCKEVENTS
465 Support for the Marvell Dove SoC 88AP510
468 bool "Marvell Kirkwood"
471 select ARCH_REQUIRE_GPIOLIB
472 select GENERIC_CLOCKEVENTS
475 Support for the following Marvell Kirkwood series SoCs:
476 88F6180, 88F6192 and 88F6281.
479 bool "Marvell Loki (88RC8480)"
481 select GENERIC_CLOCKEVENTS
484 Support for the Marvell Loki (88RC8480) SoC.
489 select ARCH_REQUIRE_GPIOLIB
492 select USB_ARCH_HAS_OHCI
495 select GENERIC_CLOCKEVENTS
497 Support for the NXP LPC32XX family of processors
500 bool "Marvell MV78xx0"
503 select ARCH_REQUIRE_GPIOLIB
504 select GENERIC_CLOCKEVENTS
507 Support for the following Marvell MV78xx0 series SoCs:
515 select ARCH_REQUIRE_GPIOLIB
516 select GENERIC_CLOCKEVENTS
519 Support for the following Marvell Orion 5x series SoCs:
520 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
521 Orion-2 (5281), Orion-1-90 (6183).
524 bool "Marvell PXA168/910/MMP2"
526 select ARCH_REQUIRE_GPIOLIB
528 select GENERIC_CLOCKEVENTS
532 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
535 bool "Micrel/Kendin KS8695"
537 select ARCH_REQUIRE_GPIOLIB
538 select ARCH_USES_GETTIMEOFFSET
540 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
541 System-on-Chip devices.
544 bool "NetSilicon NS9xxx"
547 select GENERIC_CLOCKEVENTS
550 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
553 <http://www.digi.com/products/microprocessors/index.jsp>
556 bool "Nuvoton W90X900 CPU"
558 select ARCH_REQUIRE_GPIOLIB
560 select GENERIC_CLOCKEVENTS
562 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
563 At present, the w90x900 has been renamed nuc900, regarding
564 the ARM series product line, you can login the following
565 link address to know more.
567 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
568 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
571 bool "Nuvoton NUC93X CPU"
575 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
576 low-power and high performance MPEG-4/JPEG multimedia controller chip.
579 bool "Philips Nexperia PNX4008 Mobile"
582 select ARCH_USES_GETTIMEOFFSET
584 This enables support for Philips PNX4008 mobile platform.
587 bool "PXA2xx/PXA3xx-based"
590 select ARCH_HAS_CPUFREQ
592 select ARCH_REQUIRE_GPIOLIB
593 select GENERIC_CLOCKEVENTS
597 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
602 select GENERIC_CLOCKEVENTS
603 select ARCH_REQUIRE_GPIOLIB
605 Support for Qualcomm MSM/QSD based systems. This runs on the
606 apps processor of the MSM/QSD and depends on a shared memory
607 interface to the modem processor which runs the baseband
608 stack and controls some vital subsystems
609 (clock and power control, etc).
612 bool "Renesas SH-Mobile"
614 Support for Renesas's SH-Mobile ARM platforms
621 select ARCH_MAY_HAVE_PC_FDC
622 select HAVE_PATA_PLATFORM
625 select ARCH_SPARSEMEM_ENABLE
626 select ARCH_USES_GETTIMEOFFSET
628 On the Acorn Risc-PC, Linux can support the internal IDE disk and
629 CD-ROM interface, serial and parallel port, and the floppy drive.
635 select ARCH_SPARSEMEM_ENABLE
637 select ARCH_HAS_CPUFREQ
639 select GENERIC_CLOCKEVENTS
642 select ARCH_REQUIRE_GPIOLIB
644 Support for StrongARM 11x0 based boards.
647 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
649 select ARCH_HAS_CPUFREQ
651 select ARCH_USES_GETTIMEOFFSET
653 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
654 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
655 the Samsung SMDK2410 development board (and derivatives).
657 Note, the S3C2416 and the S3C2450 are so close that they even share
658 the same SoC ID code. This means that there is no seperate machine
659 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
662 bool "Samsung S3C64XX"
668 select ARCH_USES_GETTIMEOFFSET
669 select ARCH_HAS_CPUFREQ
670 select ARCH_REQUIRE_GPIOLIB
671 select SAMSUNG_CLKSRC
672 select SAMSUNG_IRQ_VIC_TIMER
673 select SAMSUNG_IRQ_UART
674 select S3C_GPIO_TRACK
675 select S3C_GPIO_PULL_UPDOWN
676 select S3C_GPIO_CFG_S3C24XX
677 select S3C_GPIO_CFG_S3C64XX
679 select USB_ARCH_HAS_OHCI
680 select SAMSUNG_GPIOLIB_4BIT
682 Samsung S3C64XX series based systems
685 bool "Samsung S5P6440"
689 select ARCH_USES_GETTIMEOFFSET
691 Samsung S5P6440 CPU based systems
694 bool "Samsung S5P6442"
698 select ARCH_USES_GETTIMEOFFSET
700 Samsung S5P6442 CPU based systems
703 bool "Samsung S5PC100"
707 select ARM_L1_CACHE_SHIFT_6
708 select ARCH_USES_GETTIMEOFFSET
710 Samsung S5PC100 series based systems
713 bool "Samsung S5PV210/S5PC110"
717 select ARM_L1_CACHE_SHIFT_6
718 select ARCH_USES_GETTIMEOFFSET
720 Samsung S5PV210/S5PC110 series based systems
729 select ARCH_USES_GETTIMEOFFSET
731 Support for the StrongARM based Digital DNARD machine, also known
732 as "Shark" (<http://www.shark-linux.de/shark.html>).
737 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
738 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
739 select ARCH_USES_GETTIMEOFFSET
741 Say Y here for systems based on one of the Sharp LH7A40X
742 System on a Chip processors. These CPUs include an ARM922T
743 core with a wide array of integrated devices for
744 hand-held and low-power applications.
747 bool "ST-Ericsson U300 Series"
753 select GENERIC_CLOCKEVENTS
757 Support for ST-Ericsson U300 series mobile platforms.
760 bool "ST-Ericsson U8500 Series"
763 select GENERIC_CLOCKEVENTS
765 select ARCH_REQUIRE_GPIOLIB
767 Support for ST-Ericsson's Ux500 architecture
770 bool "STMicroelectronics Nomadik"
775 select GENERIC_CLOCKEVENTS
776 select ARCH_REQUIRE_GPIOLIB
778 Support for the Nomadik platform by ST-Ericsson
782 select GENERIC_CLOCKEVENTS
783 select ARCH_REQUIRE_GPIOLIB
787 select GENERIC_ALLOCATOR
788 select ARCH_HAS_HOLES_MEMORYMODEL
790 Support for TI's DaVinci platform.
795 select ARCH_REQUIRE_GPIOLIB
796 select ARCH_HAS_CPUFREQ
797 select GENERIC_CLOCKEVENTS
798 select ARCH_HAS_HOLES_MEMORYMODEL
800 Support for TI's OMAP platform (OMAP1 and OMAP2).
805 select ARCH_REQUIRE_GPIOLIB
807 select GENERIC_CLOCKEVENTS
810 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
815 # This is sorted alphabetically by mach-* pathname. However, plat-*
816 # Kconfigs may be included either alphabetically (according to the
817 # plat- suffix) or along side the corresponding mach-* source.
819 source "arch/arm/mach-aaec2000/Kconfig"
821 source "arch/arm/mach-at91/Kconfig"
823 source "arch/arm/mach-bcmring/Kconfig"
825 source "arch/arm/mach-clps711x/Kconfig"
827 source "arch/arm/mach-cns3xxx/Kconfig"
829 source "arch/arm/mach-davinci/Kconfig"
831 source "arch/arm/mach-dove/Kconfig"
833 source "arch/arm/mach-ep93xx/Kconfig"
835 source "arch/arm/mach-footbridge/Kconfig"
837 source "arch/arm/mach-gemini/Kconfig"
839 source "arch/arm/mach-h720x/Kconfig"
841 source "arch/arm/mach-integrator/Kconfig"
843 source "arch/arm/mach-iop32x/Kconfig"
845 source "arch/arm/mach-iop33x/Kconfig"
847 source "arch/arm/mach-iop13xx/Kconfig"
849 source "arch/arm/mach-ixp4xx/Kconfig"
851 source "arch/arm/mach-ixp2000/Kconfig"
853 source "arch/arm/mach-ixp23xx/Kconfig"
855 source "arch/arm/mach-kirkwood/Kconfig"
857 source "arch/arm/mach-ks8695/Kconfig"
859 source "arch/arm/mach-lh7a40x/Kconfig"
861 source "arch/arm/mach-loki/Kconfig"
863 source "arch/arm/mach-lpc32xx/Kconfig"
865 source "arch/arm/mach-msm/Kconfig"
867 source "arch/arm/mach-mv78xx0/Kconfig"
869 source "arch/arm/plat-mxc/Kconfig"
871 source "arch/arm/mach-netx/Kconfig"
873 source "arch/arm/mach-nomadik/Kconfig"
874 source "arch/arm/plat-nomadik/Kconfig"
876 source "arch/arm/mach-ns9xxx/Kconfig"
878 source "arch/arm/mach-nuc93x/Kconfig"
880 source "arch/arm/plat-omap/Kconfig"
882 source "arch/arm/mach-omap1/Kconfig"
884 source "arch/arm/mach-omap2/Kconfig"
886 source "arch/arm/mach-orion5x/Kconfig"
888 source "arch/arm/mach-pxa/Kconfig"
889 source "arch/arm/plat-pxa/Kconfig"
891 source "arch/arm/mach-mmp/Kconfig"
893 source "arch/arm/mach-realview/Kconfig"
895 source "arch/arm/mach-sa1100/Kconfig"
897 source "arch/arm/plat-samsung/Kconfig"
898 source "arch/arm/plat-s3c24xx/Kconfig"
899 source "arch/arm/plat-s5p/Kconfig"
901 source "arch/arm/plat-spear/Kconfig"
904 source "arch/arm/mach-s3c2400/Kconfig"
905 source "arch/arm/mach-s3c2410/Kconfig"
906 source "arch/arm/mach-s3c2412/Kconfig"
907 source "arch/arm/mach-s3c2416/Kconfig"
908 source "arch/arm/mach-s3c2440/Kconfig"
909 source "arch/arm/mach-s3c2443/Kconfig"
913 source "arch/arm/mach-s3c64xx/Kconfig"
916 source "arch/arm/mach-s5p6440/Kconfig"
918 source "arch/arm/mach-s5p6442/Kconfig"
920 source "arch/arm/mach-s5pc100/Kconfig"
922 source "arch/arm/mach-s5pv210/Kconfig"
924 source "arch/arm/mach-shmobile/Kconfig"
926 source "arch/arm/plat-stmp3xxx/Kconfig"
928 source "arch/arm/mach-u300/Kconfig"
930 source "arch/arm/mach-ux500/Kconfig"
932 source "arch/arm/mach-versatile/Kconfig"
934 source "arch/arm/mach-vexpress/Kconfig"
936 source "arch/arm/mach-w90x900/Kconfig"
938 # Definitions to make life easier
944 select GENERIC_CLOCKEVENTS
952 config PLAT_VERSATILE
955 config ARM_TIMER_SP804
958 source arch/arm/mm/Kconfig
961 bool "Enable iWMMXt support"
962 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
963 default y if PXA27x || PXA3xx || ARCH_MMP
965 Enable support for iWMMXt context switching at run time if
966 running on a CPU that supports it.
968 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
971 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
975 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
976 (!ARCH_OMAP3 || OMAP3_EMU)
981 source "arch/arm/Kconfig-nommu"
984 config ARM_ERRATA_411920
985 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
986 depends on CPU_V6 && !SMP
988 Invalidation of the Instruction Cache operation can
989 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
990 It does not affect the MPCore. This option enables the ARM Ltd.
991 recommended workaround.
993 config ARM_ERRATA_430973
994 bool "ARM errata: Stale prediction on replaced interworking branch"
997 This option enables the workaround for the 430973 Cortex-A8
998 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
999 interworking branch is replaced with another code sequence at the
1000 same virtual address, whether due to self-modifying code or virtual
1001 to physical address re-mapping, Cortex-A8 does not recover from the
1002 stale interworking branch prediction. This results in Cortex-A8
1003 executing the new code sequence in the incorrect ARM or Thumb state.
1004 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1005 and also flushes the branch target cache at every context switch.
1006 Note that setting specific bits in the ACTLR register may not be
1007 available in non-secure mode.
1009 config ARM_ERRATA_458693
1010 bool "ARM errata: Processor deadlock when a false hazard is created"
1013 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1014 erratum. For very specific sequences of memory operations, it is
1015 possible for a hazard condition intended for a cache line to instead
1016 be incorrectly associated with a different cache line. This false
1017 hazard might then cause a processor deadlock. The workaround enables
1018 the L1 caching of the NEON accesses and disables the PLD instruction
1019 in the ACTLR register. Note that setting specific bits in the ACTLR
1020 register may not be available in non-secure mode.
1022 config ARM_ERRATA_460075
1023 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1026 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1027 erratum. Any asynchronous access to the L2 cache may encounter a
1028 situation in which recent store transactions to the L2 cache are lost
1029 and overwritten with stale memory contents from external memory. The
1030 workaround disables the write-allocate mode for the L2 cache via the
1031 ACTLR register. Note that setting specific bits in the ACTLR register
1032 may not be available in non-secure mode.
1034 config PL310_ERRATA_588369
1035 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1036 depends on CACHE_L2X0 && ARCH_OMAP4
1038 The PL310 L2 cache controller implements three types of Clean &
1039 Invalidate maintenance operations: by Physical Address
1040 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1041 They are architecturally defined to behave as the execution of a
1042 clean operation followed immediately by an invalidate operation,
1043 both performing to the same memory location. This functionality
1044 is not correctly implemented in PL310 as clean lines are not
1045 invalidated as a result of these operations. Note that this errata
1046 uses Texas Instrument's secure monitor api.
1049 source "arch/arm/common/Kconfig"
1051 config FORCE_MAX_ZONEORDER
1064 Find out whether you have ISA slots on your motherboard. ISA is the
1065 name of a bus system, i.e. the way the CPU talks to the other stuff
1066 inside your box. Other bus systems are PCI, EISA, MicroChannel
1067 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1068 newer boards don't support it. If you have ISA, say Y, otherwise N.
1070 # Select ISA DMA controller support
1075 # Select ISA DMA interface
1080 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1082 Find out whether you have a PCI motherboard. PCI is the name of a
1083 bus system, i.e. the way the CPU talks to the other stuff inside
1084 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1085 VESA. If you have PCI, say Y, otherwise N.
1094 # Select the host bridge type
1095 config PCI_HOST_VIA82C505
1097 depends on PCI && ARCH_SHARK
1100 config PCI_HOST_ITE8152
1102 depends on PCI && MACH_ARMCORE
1106 source "drivers/pci/Kconfig"
1108 source "drivers/pcmcia/Kconfig"
1112 menu "Kernel Features"
1114 source "kernel/time/Kconfig"
1117 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1118 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1119 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1120 ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1121 depends on GENERIC_CLOCKEVENTS
1122 select USE_GENERIC_SMP_HELPERS
1123 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1125 This enables support for systems with more than one CPU. If you have
1126 a system with only one CPU, like most personal computers, say N. If
1127 you have a system with more than one CPU, say Y.
1129 If you say N here, the kernel will run on single and multiprocessor
1130 machines, but will use only one CPU of a multiprocessor machine. If
1131 you say Y here, the kernel will run on many, but not all, single
1132 processor machines. On a single processor machine, the kernel will
1133 run faster if you say N here.
1135 See also <file:Documentation/i386/IO-APIC.txt>,
1136 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1137 <http://www.linuxdoc.org/docs.html#howto>.
1139 If you don't know what to do here, say N.
1145 This option enables support for the ARM system coherency unit
1151 This options enables support for the ARM timer and watchdog unit
1154 prompt "Memory split"
1157 Select the desired split between kernel and user memory.
1159 If you are not absolutely sure what you are doing, leave this
1163 bool "3G/1G user/kernel split"
1165 bool "2G/2G user/kernel split"
1167 bool "1G/3G user/kernel split"
1172 default 0x40000000 if VMSPLIT_1G
1173 default 0x80000000 if VMSPLIT_2G
1177 int "Maximum number of CPUs (2-32)"
1183 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1184 depends on SMP && HOTPLUG && EXPERIMENTAL
1186 Say Y here to experiment with turning CPUs off and on. CPUs
1187 can be controlled through /sys/devices/system/cpu.
1190 bool "Use local timer interrupts"
1191 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1192 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1194 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1196 Enable support for local timers on SMP platforms, rather then the
1197 legacy IPI broadcast method. Local timers allows the system
1198 accounting to be spread across the timer interval, preventing a
1199 "thundering herd" at every timer tick.
1201 source kernel/Kconfig.preempt
1205 default 128 if ARCH_L7200
1206 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210
1207 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1208 default AT91_TIMER_HZ if ARCH_AT91
1211 config THUMB2_KERNEL
1212 bool "Compile the kernel in Thumb-2 mode"
1213 depends on CPU_V7 && EXPERIMENTAL
1215 select ARM_ASM_UNIFIED
1217 By enabling this option, the kernel will be compiled in
1218 Thumb-2 mode. A compiler/assembler that understand the unified
1219 ARM-Thumb syntax is needed.
1223 config ARM_ASM_UNIFIED
1227 bool "Use the ARM EABI to compile the kernel"
1229 This option allows for the kernel to be compiled using the latest
1230 ARM ABI (aka EABI). This is only useful if you are using a user
1231 space environment that is also compiled with EABI.
1233 Since there are major incompatibilities between the legacy ABI and
1234 EABI, especially with regard to structure member alignment, this
1235 option also changes the kernel syscall calling convention to
1236 disambiguate both ABIs and allow for backward compatibility support
1237 (selected with CONFIG_OABI_COMPAT).
1239 To use this you need GCC version 4.0.0 or later.
1242 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1243 depends on AEABI && EXPERIMENTAL
1246 This option preserves the old syscall interface along with the
1247 new (ARM EABI) one. It also provides a compatibility layer to
1248 intercept syscalls that have structure arguments which layout
1249 in memory differs between the legacy ABI and the new ARM EABI
1250 (only for non "thumb" binaries). This option adds a tiny
1251 overhead to all syscalls and produces a slightly larger kernel.
1252 If you know you'll be using only pure EABI user space then you
1253 can say N here. If this option is not selected and you attempt
1254 to execute a legacy ABI binary then the result will be
1255 UNPREDICTABLE (in fact it can be predicted that it won't work
1256 at all). If in doubt say Y.
1258 config ARCH_HAS_HOLES_MEMORYMODEL
1261 # Discontigmem is deprecated
1262 config ARCH_DISCONTIGMEM_ENABLE
1265 config ARCH_SPARSEMEM_ENABLE
1268 config ARCH_SPARSEMEM_DEFAULT
1269 def_bool ARCH_SPARSEMEM_ENABLE
1271 config ARCH_SELECT_MEMORY_MODEL
1272 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1276 default "4" if ARCH_LH7A40X
1278 depends on NEED_MULTIPLE_NODES
1281 bool "High Memory Support (EXPERIMENTAL)"
1282 depends on MMU && EXPERIMENTAL
1284 The address space of ARM processors is only 4 Gigabytes large
1285 and it has to accommodate user address space, kernel address
1286 space as well as some memory mapped IO. That means that, if you
1287 have a large amount of physical memory and/or IO, not all of the
1288 memory can be "permanently mapped" by the kernel. The physical
1289 memory that is not permanently mapped is called "high memory".
1291 Depending on the selected kernel/user memory split, minimum
1292 vmalloc space and actual amount of RAM, you may not need this
1293 option which should result in a slightly faster kernel.
1298 bool "Allocate 2nd-level pagetables from highmem"
1300 depends on !OUTER_CACHE
1302 config HW_PERF_EVENTS
1303 bool "Enable hardware performance counter support for perf events"
1304 depends on PERF_EVENTS && CPU_HAS_PMU
1307 Enable hardware performance counter support for perf events. If
1308 disabled, perf events will use software events only.
1313 bool "Timer and CPU usage LEDs"
1314 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1315 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1316 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1317 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1318 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1319 ARCH_AT91 || ARCH_DAVINCI || \
1320 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1322 If you say Y here, the LEDs on your machine will be used
1323 to provide useful information about your current system status.
1325 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1326 be able to select which LEDs are active using the options below. If
1327 you are compiling a kernel for the EBSA-110 or the LART however, the
1328 red LED will simply flash regularly to indicate that the system is
1329 still functional. It is safe to say Y here if you have a CATS
1330 system, but the driver will do nothing.
1333 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1334 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1335 || MACH_OMAP_PERSEUS2
1337 depends on !GENERIC_CLOCKEVENTS
1338 default y if ARCH_EBSA110
1340 If you say Y here, one of the system LEDs (the green one on the
1341 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1342 will flash regularly to indicate that the system is still
1343 operational. This is mainly useful to kernel hackers who are
1344 debugging unstable kernels.
1346 The LART uses the same LED for both Timer LED and CPU usage LED
1347 functions. You may choose to use both, but the Timer LED function
1348 will overrule the CPU usage LED.
1351 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1353 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1354 || MACH_OMAP_PERSEUS2
1357 If you say Y here, the red LED will be used to give a good real
1358 time indication of CPU usage, by lighting whenever the idle task
1359 is not currently executing.
1361 The LART uses the same LED for both Timer LED and CPU usage LED
1362 functions. You may choose to use both, but the Timer LED function
1363 will overrule the CPU usage LED.
1365 config ALIGNMENT_TRAP
1367 depends on CPU_CP15_MMU
1368 default y if !ARCH_EBSA110
1369 select HAVE_PROC_CPU if PROC_FS
1371 ARM processors cannot fetch/store information which is not
1372 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1373 address divisible by 4. On 32-bit ARM processors, these non-aligned
1374 fetch/store instructions will be emulated in software if you say
1375 here, which has a severe performance impact. This is necessary for
1376 correct operation of some network protocols. With an IP-only
1377 configuration it is safe to say N, otherwise say Y.
1379 config UACCESS_WITH_MEMCPY
1380 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1381 depends on MMU && EXPERIMENTAL
1382 default y if CPU_FEROCEON
1384 Implement faster copy_to_user and clear_user methods for CPU
1385 cores where a 8-word STM instruction give significantly higher
1386 memory write throughput than a sequence of individual 32bit stores.
1388 A possible side effect is a slight increase in scheduling latency
1389 between threads sharing the same address space if they invoke
1390 such copy operations with large buffers.
1392 However, if the CPU data cache is using a write-allocate mode,
1393 this option is unlikely to provide any performance gain.
1395 config CC_STACKPROTECTOR
1396 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1398 This option turns on the -fstack-protector GCC feature. This
1399 feature puts, at the beginning of functions, a canary value on
1400 the stack just before the return address, and validates
1401 the value just before actually returning. Stack based buffer
1402 overflows (that need to overwrite this return address) now also
1403 overwrite the canary, which gets detected and the attack is then
1404 neutralized via a kernel panic.
1405 This feature requires gcc version 4.2 or above.
1407 config DEPRECATED_PARAM_STRUCT
1408 bool "Provide old way to pass kernel parameters"
1410 This was deprecated in 2001 and announced to live on for 5 years.
1411 Some old boot loaders still use this way.
1417 # Compressed boot loader in ROM. Yes, we really want to ask about
1418 # TEXT and BSS so we preserve their values in the config files.
1419 config ZBOOT_ROM_TEXT
1420 hex "Compressed ROM boot loader base address"
1423 The physical address at which the ROM-able zImage is to be
1424 placed in the target. Platforms which normally make use of
1425 ROM-able zImage formats normally set this to a suitable
1426 value in their defconfig file.
1428 If ZBOOT_ROM is not enabled, this has no effect.
1430 config ZBOOT_ROM_BSS
1431 hex "Compressed ROM boot loader BSS address"
1434 The base address of an area of read/write memory in the target
1435 for the ROM-able zImage which must be available while the
1436 decompressor is running. It must be large enough to hold the
1437 entire decompressed kernel plus an additional 128 KiB.
1438 Platforms which normally make use of ROM-able zImage formats
1439 normally set this to a suitable value in their defconfig file.
1441 If ZBOOT_ROM is not enabled, this has no effect.
1444 bool "Compressed boot loader in ROM/flash"
1445 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1447 Say Y here if you intend to execute your compressed kernel image
1448 (zImage) directly from ROM or flash. If unsure, say N.
1451 string "Default kernel command string"
1454 On some architectures (EBSA110 and CATS), there is currently no way
1455 for the boot loader to pass arguments to the kernel. For these
1456 architectures, you should supply some command-line options at build
1457 time by entering them here. As a minimum, you should specify the
1458 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1460 config CMDLINE_FORCE
1461 bool "Always use the default kernel command string"
1462 depends on CMDLINE != ""
1464 Always use the default kernel command string, even if the boot
1465 loader passes other arguments to the kernel.
1466 This is useful if you cannot or don't want to change the
1467 command-line options your boot loader passes to the kernel.
1472 bool "Kernel Execute-In-Place from ROM"
1473 depends on !ZBOOT_ROM
1475 Execute-In-Place allows the kernel to run from non-volatile storage
1476 directly addressable by the CPU, such as NOR flash. This saves RAM
1477 space since the text section of the kernel is not loaded from flash
1478 to RAM. Read-write sections, such as the data section and stack,
1479 are still copied to RAM. The XIP kernel is not compressed since
1480 it has to run directly from flash, so it will take more space to
1481 store it. The flash address used to link the kernel object files,
1482 and for storing it, is configuration dependent. Therefore, if you
1483 say Y here, you must know the proper physical address where to
1484 store the kernel image depending on your own flash memory usage.
1486 Also note that the make target becomes "make xipImage" rather than
1487 "make zImage" or "make Image". The final kernel binary to put in
1488 ROM memory will be arch/arm/boot/xipImage.
1492 config XIP_PHYS_ADDR
1493 hex "XIP Kernel Physical Location"
1494 depends on XIP_KERNEL
1495 default "0x00080000"
1497 This is the physical address in your flash memory the kernel will
1498 be linked for and stored to. This address is dependent on your
1502 bool "Kexec system call (EXPERIMENTAL)"
1503 depends on EXPERIMENTAL
1505 kexec is a system call that implements the ability to shutdown your
1506 current kernel, and to start another kernel. It is like a reboot
1507 but it is independent of the system firmware. And like a reboot
1508 you can start any kernel with it, not just Linux.
1510 It is an ongoing process to be certain the hardware in a machine
1511 is properly shutdown, so do not be surprised if this code does not
1512 initially work for you. It may help to enable device hotplugging
1516 bool "Export atags in procfs"
1520 Should the atags used to boot the kernel be exported in an "atags"
1521 file in procfs. Useful with kexec.
1523 config AUTO_ZRELADDR
1524 bool "Auto calculation of the decompressed kernel image address"
1525 depends on !ZBOOT_ROM && !ARCH_U300
1527 ZRELADDR is the physical address where the decompressed kernel
1528 image will be placed. If AUTO_ZRELADDR is selected, the address
1529 will be determined at run-time by masking the current IP with
1530 0xf8000000. This assumes the zImage being placed in the first 128MB
1531 from start of memory.
1534 hex "Physical address of the decompressed kernel image"
1535 depends on !AUTO_ZRELADDR
1536 default 0x00008000 if ARCH_BCMRING ||\
1561 default 0x08008000 if ARCH_MX1 ||\
1563 default 0x10008000 if ARCH_MSM ||\
1566 default 0x20008000 if ARCH_S5P6440 ||\
1570 default 0x30008000 if ARCH_S3C2410 ||\
1576 default 0x40008000 if ARCH_STMP378X ||\
1580 default 0x50008000 if ARCH_S3C64XX ||\
1582 default 0x60008000 if ARCH_VEXPRESS
1583 default 0x80008000 if ARCH_MX25 ||\
1588 default 0x90008000 if ARCH_MX5 ||\
1590 default 0xa0008000 if ARCH_IOP32X ||\
1593 default 0xc0008000 if ARCH_LH7A40X ||\
1595 default 0xf0008000 if ARCH_AAEC2000 ||\
1597 default 0xc0028000 if ARCH_CLPS711X
1598 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1599 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1600 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1601 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1602 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1603 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1604 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1605 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1606 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1607 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1608 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1609 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1610 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1611 default 0xc0208000 if ARCH_SA1100 && SA1111
1612 default 0xc0008000 if ARCH_SA1100 && !SA1111
1613 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1614 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1615 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1617 ZRELADDR is the physical address where the decompressed kernel
1618 image will be placed. ZRELADDR has to be specified when the
1619 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1624 menu "CPU Power Management"
1628 source "drivers/cpufreq/Kconfig"
1630 config CPU_FREQ_SA1100
1633 config CPU_FREQ_SA1110
1636 config CPU_FREQ_INTEGRATOR
1637 tristate "CPUfreq driver for ARM Integrator CPUs"
1638 depends on ARCH_INTEGRATOR && CPU_FREQ
1641 This enables the CPUfreq driver for ARM Integrator CPUs.
1643 For details, take a look at <file:Documentation/cpu-freq>.
1649 depends on CPU_FREQ && ARCH_PXA && PXA25x
1651 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1653 config CPU_FREQ_S3C64XX
1654 bool "CPUfreq support for Samsung S3C64XX CPUs"
1655 depends on CPU_FREQ && CPU_S3C6410
1660 Internal configuration node for common cpufreq on Samsung SoC
1662 config CPU_FREQ_S3C24XX
1663 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1664 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1667 This enables the CPUfreq driver for the Samsung S3C24XX family
1670 For details, take a look at <file:Documentation/cpu-freq>.
1674 config CPU_FREQ_S3C24XX_PLL
1675 bool "Support CPUfreq changing of PLL frequency"
1676 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1678 Compile in support for changing the PLL frequency from the
1679 S3C24XX series CPUfreq driver. The PLL takes time to settle
1680 after a frequency change, so by default it is not enabled.
1682 This also means that the PLL tables for the selected CPU(s) will
1683 be built which may increase the size of the kernel image.
1685 config CPU_FREQ_S3C24XX_DEBUG
1686 bool "Debug CPUfreq Samsung driver core"
1687 depends on CPU_FREQ_S3C24XX
1689 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1691 config CPU_FREQ_S3C24XX_IODEBUG
1692 bool "Debug CPUfreq Samsung driver IO timing"
1693 depends on CPU_FREQ_S3C24XX
1695 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1697 config CPU_FREQ_S3C24XX_DEBUGFS
1698 bool "Export debugfs for CPUFreq"
1699 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1701 Export status information via debugfs.
1705 source "drivers/cpuidle/Kconfig"
1709 menu "Floating point emulation"
1711 comment "At least one emulation must be selected"
1714 bool "NWFPE math emulation"
1715 depends on !AEABI || OABI_COMPAT
1717 Say Y to include the NWFPE floating point emulator in the kernel.
1718 This is necessary to run most binaries. Linux does not currently
1719 support floating point hardware so you need to say Y here even if
1720 your machine has an FPA or floating point co-processor podule.
1722 You may say N here if you are going to load the Acorn FPEmulator
1723 early in the bootup.
1726 bool "Support extended precision"
1727 depends on FPE_NWFPE
1729 Say Y to include 80-bit support in the kernel floating-point
1730 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1731 Note that gcc does not generate 80-bit operations by default,
1732 so in most cases this option only enlarges the size of the
1733 floating point emulator without any good reason.
1735 You almost surely want to say N here.
1738 bool "FastFPE math emulation (EXPERIMENTAL)"
1739 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1741 Say Y here to include the FAST floating point emulator in the kernel.
1742 This is an experimental much faster emulator which now also has full
1743 precision for the mantissa. It does not support any exceptions.
1744 It is very simple, and approximately 3-6 times faster than NWFPE.
1746 It should be sufficient for most programs. It may be not suitable
1747 for scientific calculations, but you have to check this for yourself.
1748 If you do not feel you need a faster FP emulation you should better
1752 bool "VFP-format floating point maths"
1753 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1755 Say Y to include VFP support code in the kernel. This is needed
1756 if your hardware includes a VFP unit.
1758 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1759 release notes and additional status information.
1761 Say N if your target does not have VFP hardware.
1769 bool "Advanced SIMD (NEON) Extension support"
1770 depends on VFPv3 && CPU_V7
1772 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1777 menu "Userspace binary formats"
1779 source "fs/Kconfig.binfmt"
1782 tristate "RISC OS personality"
1785 Say Y here to include the kernel code necessary if you want to run
1786 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1787 experimental; if this sounds frightening, say N and sleep in peace.
1788 You can also say M here to compile this support as a module (which
1789 will be called arthur).
1793 menu "Power management options"
1795 source "kernel/power/Kconfig"
1797 config ARCH_SUSPEND_POSSIBLE
1802 source "net/Kconfig"
1804 source "drivers/Kconfig"
1808 source "arch/arm/Kconfig.debug"
1810 source "security/Kconfig"
1812 source "crypto/Kconfig"
1814 source "lib/Kconfig"