2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
14 select SYS_SUPPORTS_APM_EMULATION
17 select HAVE_KPROBES if (!XIP_KERNEL)
18 select HAVE_KRETPROBES if (HAVE_KPROBES)
19 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
20 select HAVE_GENERIC_DMA_COHERENT
22 The ARM series is a line of low-power-consumption RISC chip designs
23 licensed by ARM Ltd and targeted at embedded applications and
24 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
25 manufactured, but legacy ARM-based PC hardware remains popular in
26 Europe. There is an ARM Linux project with a web page at
27 <http://www.arm.linux.org.uk/>.
32 config SYS_SUPPORTS_APM_EMULATION
43 config GENERIC_CLOCKEVENTS
47 config GENERIC_CLOCKEVENTS_BROADCAST
49 depends on GENERIC_CLOCKEVENTS
50 default y if SMP && !LOCAL_TIMERS
63 The Extended Industry Standard Architecture (EISA) bus was
64 developed as an open alternative to the IBM MicroChannel bus.
66 The EISA bus provided some of the features of the IBM MicroChannel
67 bus while maintaining backward compatibility with cards made for
68 the older ISA bus. The EISA bus saw limited use between 1988 and
69 1995 when it was made obsolete by the PCI bus.
71 Say Y here if you are building a kernel for an EISA-based machine.
81 MicroChannel Architecture is found in some IBM PS/2 machines and
82 laptops. It is a bus system similar to PCI or ISA. See
83 <file:Documentation/mca.txt> (and especially the web page given
84 there) before attempting to build an MCA bus kernel.
86 config GENERIC_HARDIRQS
90 config STACKTRACE_SUPPORT
94 config HAVE_LATENCYTOP_SUPPORT
99 config LOCKDEP_SUPPORT
103 config TRACE_IRQFLAGS_SUPPORT
107 config HARDIRQS_SW_RESEND
111 config GENERIC_IRQ_PROBE
115 config GENERIC_LOCKBREAK
118 depends on SMP && PREEMPT
120 config RWSEM_GENERIC_SPINLOCK
124 config RWSEM_XCHGADD_ALGORITHM
127 config ARCH_HAS_ILOG2_U32
131 config ARCH_HAS_ILOG2_U64
135 config GENERIC_HWEIGHT
139 config GENERIC_CALIBRATE_DELAY
143 config ARCH_MAY_HAVE_PC_FDC
149 config GENERIC_ISA_DMA
158 config GENERIC_HARDIRQS_NO__DO_IRQ
163 config OPROFILE_ARMV6
165 depends on CPU_V6 && !SMP
166 select OPROFILE_ARM11_CORE
168 config OPROFILE_MPCORE
170 depends on CPU_V6 && SMP
171 select OPROFILE_ARM11_CORE
173 config OPROFILE_ARM11_CORE
176 config OPROFILE_ARMV7
178 depends on CPU_V7 && !SMP
185 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
186 default DRAM_BASE if REMAP_VECTORS_TO_RAM
189 The base address of exception vectors.
191 source "init/Kconfig"
193 source "kernel/Kconfig.freezer"
198 prompt "ARM system type"
199 default ARCH_VERSATILE
202 bool "Agilent AAEC-2000 based"
207 This enables support for systems based on the Agilent AAEC-2000
209 config ARCH_INTEGRATOR
210 bool "ARM Ltd. Integrator family"
216 Support for ARM's Integrator platform.
219 bool "ARM Ltd. RealView family"
225 select GENERIC_CLOCKEVENTS
227 This enables support for ARM Ltd RealView boards.
229 config ARCH_VERSATILE
230 bool "ARM Ltd. Versatile family"
237 select GENERIC_CLOCKEVENTS
239 This enables support for ARM Ltd Versatile board.
246 This enables support for systems based on the Atmel AT91RM9200,
247 AT91SAM9 and AT91CAP9 processors.
250 bool "Cirrus Logic CLPS711x/EP721x-based"
253 Support for Cirrus Logic 711x/721x based boards.
261 This is an evaluation board for the StrongARM processor available
262 from Digital. It has limited hardware on-board, including an
263 Ethernet interface, two PCMCIA sockets, two serial ports and a
274 select ARCH_REQUIRE_GPIOLIB
276 This enables support for the Cirrus EP93xx series of CPUs.
278 config ARCH_FOOTBRIDGE
283 Support for systems based on the DC21285 companion chip
284 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
287 bool "Hilscher NetX based"
290 select GENERIC_CLOCKEVENTS
293 This enables support for systems based on the Hilscher NetX Soc
296 bool "Hynix HMS720x-based"
300 This enables support for systems based on the Hynix HMS720x
307 select GENERIC_CLOCKEVENTS
309 Support for Motorola's i.MX family of processors (MX1, MXL).
317 select ARCH_SUPPORTS_MSI
320 Support for Intel's IOP13XX (XScale) family of processors.
329 select ARCH_REQUIRE_GPIOLIB
331 Support for Intel's 80219 and IOP32X (XScale) family of
341 select ARCH_REQUIRE_GPIOLIB
343 Support for Intel's IOP33X (XScale) family of processors.
351 Support for Intel's IXP23xx (XScale) family of processors.
354 bool "IXP2400/2800-based"
359 Support for Intel's IXP2400/2800 (XScale) family of processors.
367 select GENERIC_CLOCKEVENTS
368 select DMABOUNCE if PCI
370 Support for Intel's IXP4XX (XScale) family of processors.
377 Say Y here if you intend to run this kernel on a LinkUp Systems
378 L7200 Software Development Board which uses an ARM720T processor.
379 Information on this board can be obtained at:
381 <http://www.linkupsys.com/>
383 If you have any questions or comments about the Linux kernel port
384 to this board, send e-mail to <sjhill@cotw.com>.
387 bool "Marvell Kirkwood"
392 select GENERIC_CLOCKEVENTS
395 Support for the following Marvell Kirkwood series SoCs:
396 88F6180, 88F6192 and 88F6281.
399 bool "Micrel/Kendin KS8695"
402 select ARCH_REQUIRE_GPIOLIB
404 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
405 System-on-Chip devices.
408 bool "NetSilicon NS9xxx"
412 select GENERIC_CLOCKEVENTS
415 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
418 <http://www.digi.com/products/microprocessors/index.jsp>
421 bool "Marvell Loki (88RC8480)"
424 select GENERIC_CLOCKEVENTS
427 Support for the Marvell Loki (88RC8480) SoC.
430 bool "Marvell MV78xx0"
435 select GENERIC_CLOCKEVENTS
438 Support for the following Marvell MV78xx0 series SoCs:
442 bool "Freescale MXC/iMX-based"
444 select GENERIC_CLOCKEVENTS
447 select ARCH_REQUIRE_GPIOLIB
449 Support for Freescale MXC/iMX-based family of processors
458 select GENERIC_CLOCKEVENTS
461 Support for the following Marvell Orion 5x series SoCs:
462 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
463 Orion-2 (5281), Orion-1-90 (6183).
466 bool "Philips Nexperia PNX4008 Mobile"
470 This enables support for Philips PNX4008 mobile platform.
473 bool "PXA2xx/PXA3xx-based"
479 select ARCH_REQUIRE_GPIOLIB
481 select GENERIC_CLOCKEVENTS
484 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
491 select ARCH_MAY_HAVE_PC_FDC
492 select HAVE_PATA_PLATFORM
495 select ARCH_SPARSEMEM_ENABLE
497 On the Acorn Risc-PC, Linux can support the internal IDE disk and
498 CD-ROM interface, serial and parallel port, and the floppy drive.
504 select ARCH_SPARSEMEM_ENABLE
508 select GENERIC_CLOCKEVENTS
511 select ARCH_REQUIRE_GPIOLIB
513 Support for StrongARM 11x0 based boards.
516 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
520 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
521 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
522 the Samsung SMDK2410 development board (and derivatives).
525 bool "Samsung S3C64XX"
529 Samsung S3C64XX series based systems
539 Support for the StrongARM based Digital DNARD machine, also known
540 as "Shark" (<http://www.shark-linux.de/shark.html>).
545 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
546 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
548 Say Y here for systems based on one of the Sharp LH7A40X
549 System on a Chip processors. These CPUs include an ARM922T
550 core with a wide array of integrated devices for
551 hand-held and low-power applications.
557 select GENERIC_CLOCKEVENTS
559 select ARCH_REQUIRE_GPIOLIB
563 Support for TI's DaVinci platform.
569 select ARCH_REQUIRE_GPIOLIB
571 select GENERIC_CLOCKEVENTS
573 Support for TI's OMAP platform (OMAP1 and OMAP2).
579 select GENERIC_CLOCKEVENTS
581 Support for Qualcomm MSM7K based systems. This runs on the ARM11
582 apps processor of the MSM7K and depends on a shared memory
583 interface to the ARM9 modem processor which runs the baseband stack
584 and controls some vital subsystems (clock and power control, etc).
587 bool "Nuvoton W90X900 CPU"
590 Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
591 can login www.mcuos.com or www.nuvoton.com to know more.
595 source "arch/arm/mach-clps711x/Kconfig"
597 source "arch/arm/mach-ep93xx/Kconfig"
599 source "arch/arm/mach-footbridge/Kconfig"
601 source "arch/arm/mach-integrator/Kconfig"
603 source "arch/arm/mach-iop32x/Kconfig"
605 source "arch/arm/mach-iop33x/Kconfig"
607 source "arch/arm/mach-iop13xx/Kconfig"
609 source "arch/arm/mach-ixp4xx/Kconfig"
611 source "arch/arm/mach-ixp2000/Kconfig"
613 source "arch/arm/mach-ixp23xx/Kconfig"
615 source "arch/arm/mach-loki/Kconfig"
617 source "arch/arm/mach-mv78xx0/Kconfig"
619 source "arch/arm/mach-pxa/Kconfig"
621 source "arch/arm/mach-sa1100/Kconfig"
623 source "arch/arm/plat-omap/Kconfig"
625 source "arch/arm/mach-omap1/Kconfig"
627 source "arch/arm/mach-omap2/Kconfig"
629 source "arch/arm/mach-orion5x/Kconfig"
631 source "arch/arm/mach-kirkwood/Kconfig"
633 source "arch/arm/plat-s3c24xx/Kconfig"
634 source "arch/arm/plat-s3c64xx/Kconfig"
635 source "arch/arm/plat-s3c/Kconfig"
638 source "arch/arm/mach-s3c2400/Kconfig"
639 source "arch/arm/mach-s3c2410/Kconfig"
640 source "arch/arm/mach-s3c2412/Kconfig"
641 source "arch/arm/mach-s3c2440/Kconfig"
642 source "arch/arm/mach-s3c2442/Kconfig"
643 source "arch/arm/mach-s3c2443/Kconfig"
647 source "arch/arm/mach-s3c6400/Kconfig"
648 source "arch/arm/mach-s3c6410/Kconfig"
651 source "arch/arm/mach-lh7a40x/Kconfig"
653 source "arch/arm/mach-imx/Kconfig"
655 source "arch/arm/mach-h720x/Kconfig"
657 source "arch/arm/mach-versatile/Kconfig"
659 source "arch/arm/mach-aaec2000/Kconfig"
661 source "arch/arm/mach-realview/Kconfig"
663 source "arch/arm/mach-at91/Kconfig"
665 source "arch/arm/plat-mxc/Kconfig"
667 source "arch/arm/mach-netx/Kconfig"
669 source "arch/arm/mach-ns9xxx/Kconfig"
671 source "arch/arm/mach-davinci/Kconfig"
673 source "arch/arm/mach-ks8695/Kconfig"
675 source "arch/arm/mach-msm/Kconfig"
677 source "arch/arm/mach-w90x900/Kconfig"
679 # Definitions to make life easier
689 source arch/arm/mm/Kconfig
692 bool "Enable iWMMXt support"
693 depends on CPU_XSCALE || CPU_XSC3
694 default y if PXA27x || PXA3xx
696 Enable support for iWMMXt context switching at run time if
697 running on a CPU that supports it.
699 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
702 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
706 source "arch/arm/Kconfig-nommu"
711 source "arch/arm/common/Kconfig"
713 config FORCE_MAX_ZONEORDER
726 Find out whether you have ISA slots on your motherboard. ISA is the
727 name of a bus system, i.e. the way the CPU talks to the other stuff
728 inside your box. Other bus systems are PCI, EISA, MicroChannel
729 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
730 newer boards don't support it. If you have ISA, say Y, otherwise N.
732 # Select ISA DMA controller support
737 # Select ISA DMA interface
742 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
744 Find out whether you have a PCI motherboard. PCI is the name of a
745 bus system, i.e. the way the CPU talks to the other stuff inside
746 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
747 VESA. If you have PCI, say Y, otherwise N.
752 # Select the host bridge type
753 config PCI_HOST_VIA82C505
755 depends on PCI && ARCH_SHARK
758 config PCI_HOST_ITE8152
760 depends on PCI && MACH_ARMCORE
764 source "drivers/pci/Kconfig"
766 source "drivers/pcmcia/Kconfig"
770 menu "Kernel Features"
772 source "kernel/time/Kconfig"
775 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
776 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
777 select USE_GENERIC_SMP_HELPERS
779 This enables support for systems with more than one CPU. If you have
780 a system with only one CPU, like most personal computers, say N. If
781 you have a system with more than one CPU, say Y.
783 If you say N here, the kernel will run on single and multiprocessor
784 machines, but will use only one CPU of a multiprocessor machine. If
785 you say Y here, the kernel will run on many, but not all, single
786 processor machines. On a single processor machine, the kernel will
787 run faster if you say N here.
789 See also <file:Documentation/i386/IO-APIC.txt>,
790 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
791 <http://www.linuxdoc.org/docs.html#howto>.
793 If you don't know what to do here, say N.
796 prompt "Memory split"
799 Select the desired split between kernel and user memory.
801 If you are not absolutely sure what you are doing, leave this
805 bool "3G/1G user/kernel split"
807 bool "2G/2G user/kernel split"
809 bool "1G/3G user/kernel split"
814 default 0x40000000 if VMSPLIT_1G
815 default 0x80000000 if VMSPLIT_2G
819 int "Maximum number of CPUs (2-32)"
825 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
826 depends on SMP && HOTPLUG && EXPERIMENTAL
828 Say Y here to experiment with turning CPUs off and on. CPUs
829 can be controlled through /sys/devices/system/cpu.
832 bool "Use local timer interrupts"
833 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || REALVIEW_EB_A9MP)
836 Enable support for local timers on SMP platforms, rather then the
837 legacy IPI broadcast method. Local timers allows the system
838 accounting to be spread across the timer interval, preventing a
839 "thundering herd" at every timer tick.
842 bool "Preemptible Kernel (EXPERIMENTAL)"
843 depends on EXPERIMENTAL
845 This option reduces the latency of the kernel when reacting to
846 real-time or interactive events by allowing a low priority process to
847 be preempted even if it is in kernel mode executing a system call.
848 This allows applications to run more reliably even when the system is
851 Say Y here if you are building a kernel for a desktop, embedded
852 or real-time system. Say N if you are unsure.
856 default 128 if ARCH_L7200
857 default 200 if ARCH_EBSA110 || ARCH_S3C2410
858 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
859 default AT91_TIMER_HZ if ARCH_AT91
863 bool "Use the ARM EABI to compile the kernel"
865 This option allows for the kernel to be compiled using the latest
866 ARM ABI (aka EABI). This is only useful if you are using a user
867 space environment that is also compiled with EABI.
869 Since there are major incompatibilities between the legacy ABI and
870 EABI, especially with regard to structure member alignment, this
871 option also changes the kernel syscall calling convention to
872 disambiguate both ABIs and allow for backward compatibility support
873 (selected with CONFIG_OABI_COMPAT).
875 To use this you need GCC version 4.0.0 or later.
878 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
879 depends on AEABI && EXPERIMENTAL
882 This option preserves the old syscall interface along with the
883 new (ARM EABI) one. It also provides a compatibility layer to
884 intercept syscalls that have structure arguments which layout
885 in memory differs between the legacy ABI and the new ARM EABI
886 (only for non "thumb" binaries). This option adds a tiny
887 overhead to all syscalls and produces a slightly larger kernel.
888 If you know you'll be using only pure EABI user space then you
889 can say N here. If this option is not selected and you attempt
890 to execute a legacy ABI binary then the result will be
891 UNPREDICTABLE (in fact it can be predicted that it won't work
892 at all). If in doubt say Y.
894 config ARCH_FLATMEM_HAS_HOLES
899 # Discontigmem is deprecated
900 config ARCH_DISCONTIGMEM_ENABLE
903 config ARCH_SPARSEMEM_ENABLE
906 config ARCH_SPARSEMEM_DEFAULT
907 def_bool ARCH_SPARSEMEM_ENABLE
909 config ARCH_SELECT_MEMORY_MODEL
910 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
914 default "4" if ARCH_LH7A40X
916 depends on NEED_MULTIPLE_NODES
919 bool "High Memory Support (EXPERIMENTAL)"
920 depends on MMU && EXPERIMENTAL
922 The address space of ARM processors is only 4 Gigabytes large
923 and it has to accommodate user address space, kernel address
924 space as well as some memory mapped IO. That means that, if you
925 have a large amount of physical memory and/or IO, not all of the
926 memory can be "permanently mapped" by the kernel. The physical
927 memory that is not permanently mapped is called "high memory".
929 Depending on the selected kernel/user memory split, minimum
930 vmalloc space and actual amount of RAM, you may not need this
931 option which should result in a slightly faster kernel.
938 bool "Timer and CPU usage LEDs"
939 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
940 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
941 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
942 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
943 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
944 ARCH_AT91 || ARCH_DAVINCI || \
945 ARCH_KS8695 || MACH_RD88F5182
947 If you say Y here, the LEDs on your machine will be used
948 to provide useful information about your current system status.
950 If you are compiling a kernel for a NetWinder or EBSA-285, you will
951 be able to select which LEDs are active using the options below. If
952 you are compiling a kernel for the EBSA-110 or the LART however, the
953 red LED will simply flash regularly to indicate that the system is
954 still functional. It is safe to say Y here if you have a CATS
955 system, but the driver will do nothing.
958 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
959 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
960 || MACH_OMAP_PERSEUS2
962 depends on !GENERIC_CLOCKEVENTS
963 default y if ARCH_EBSA110
965 If you say Y here, one of the system LEDs (the green one on the
966 NetWinder, the amber one on the EBSA285, or the red one on the LART)
967 will flash regularly to indicate that the system is still
968 operational. This is mainly useful to kernel hackers who are
969 debugging unstable kernels.
971 The LART uses the same LED for both Timer LED and CPU usage LED
972 functions. You may choose to use both, but the Timer LED function
973 will overrule the CPU usage LED.
976 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
978 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
979 || MACH_OMAP_PERSEUS2
982 If you say Y here, the red LED will be used to give a good real
983 time indication of CPU usage, by lighting whenever the idle task
984 is not currently executing.
986 The LART uses the same LED for both Timer LED and CPU usage LED
987 functions. You may choose to use both, but the Timer LED function
988 will overrule the CPU usage LED.
990 config ALIGNMENT_TRAP
992 depends on CPU_CP15_MMU
993 default y if !ARCH_EBSA110
995 ARM processors cannot fetch/store information which is not
996 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
997 address divisible by 4. On 32-bit ARM processors, these non-aligned
998 fetch/store instructions will be emulated in software if you say
999 here, which has a severe performance impact. This is necessary for
1000 correct operation of some network protocols. With an IP-only
1001 configuration it is safe to say N, otherwise say Y.
1007 # Compressed boot loader in ROM. Yes, we really want to ask about
1008 # TEXT and BSS so we preserve their values in the config files.
1009 config ZBOOT_ROM_TEXT
1010 hex "Compressed ROM boot loader base address"
1013 The physical address at which the ROM-able zImage is to be
1014 placed in the target. Platforms which normally make use of
1015 ROM-able zImage formats normally set this to a suitable
1016 value in their defconfig file.
1018 If ZBOOT_ROM is not enabled, this has no effect.
1020 config ZBOOT_ROM_BSS
1021 hex "Compressed ROM boot loader BSS address"
1024 The base address of an area of read/write memory in the target
1025 for the ROM-able zImage which must be available while the
1026 decompressor is running. It must be large enough to hold the
1027 entire decompressed kernel plus an additional 128 KiB.
1028 Platforms which normally make use of ROM-able zImage formats
1029 normally set this to a suitable value in their defconfig file.
1031 If ZBOOT_ROM is not enabled, this has no effect.
1034 bool "Compressed boot loader in ROM/flash"
1035 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1037 Say Y here if you intend to execute your compressed kernel image
1038 (zImage) directly from ROM or flash. If unsure, say N.
1041 string "Default kernel command string"
1044 On some architectures (EBSA110 and CATS), there is currently no way
1045 for the boot loader to pass arguments to the kernel. For these
1046 architectures, you should supply some command-line options at build
1047 time by entering them here. As a minimum, you should specify the
1048 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1051 bool "Kernel Execute-In-Place from ROM"
1052 depends on !ZBOOT_ROM
1054 Execute-In-Place allows the kernel to run from non-volatile storage
1055 directly addressable by the CPU, such as NOR flash. This saves RAM
1056 space since the text section of the kernel is not loaded from flash
1057 to RAM. Read-write sections, such as the data section and stack,
1058 are still copied to RAM. The XIP kernel is not compressed since
1059 it has to run directly from flash, so it will take more space to
1060 store it. The flash address used to link the kernel object files,
1061 and for storing it, is configuration dependent. Therefore, if you
1062 say Y here, you must know the proper physical address where to
1063 store the kernel image depending on your own flash memory usage.
1065 Also note that the make target becomes "make xipImage" rather than
1066 "make zImage" or "make Image". The final kernel binary to put in
1067 ROM memory will be arch/arm/boot/xipImage.
1071 config XIP_PHYS_ADDR
1072 hex "XIP Kernel Physical Location"
1073 depends on XIP_KERNEL
1074 default "0x00080000"
1076 This is the physical address in your flash memory the kernel will
1077 be linked for and stored to. This address is dependent on your
1081 bool "Kexec system call (EXPERIMENTAL)"
1082 depends on EXPERIMENTAL
1084 kexec is a system call that implements the ability to shutdown your
1085 current kernel, and to start another kernel. It is like a reboot
1086 but it is independent of the system firmware. And like a reboot
1087 you can start any kernel with it, not just Linux.
1089 It is an ongoing process to be certain the hardware in a machine
1090 is properly shutdown, so do not be surprised if this code does not
1091 initially work for you. It may help to enable device hotplugging
1095 bool "Export atags in procfs"
1099 Should the atags used to boot the kernel be exported in an "atags"
1100 file in procfs. Useful with kexec.
1104 menu "CPU Power Management"
1106 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1108 source "drivers/cpufreq/Kconfig"
1110 config CPU_FREQ_SA1100
1112 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1115 config CPU_FREQ_SA1110
1117 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1120 config CPU_FREQ_INTEGRATOR
1121 tristate "CPUfreq driver for ARM Integrator CPUs"
1122 depends on ARCH_INTEGRATOR && CPU_FREQ
1125 This enables the CPUfreq driver for ARM Integrator CPUs.
1127 For details, take a look at <file:Documentation/cpu-freq>.
1132 tristate "CPUfreq driver for i.MX CPUs"
1133 depends on ARCH_IMX && CPU_FREQ
1136 This enables the CPUfreq driver for i.MX CPUs.
1142 depends on CPU_FREQ && ARCH_PXA && PXA25x
1144 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1148 source "drivers/cpuidle/Kconfig"
1152 menu "Floating point emulation"
1154 comment "At least one emulation must be selected"
1157 bool "NWFPE math emulation"
1158 depends on !AEABI || OABI_COMPAT
1160 Say Y to include the NWFPE floating point emulator in the kernel.
1161 This is necessary to run most binaries. Linux does not currently
1162 support floating point hardware so you need to say Y here even if
1163 your machine has an FPA or floating point co-processor podule.
1165 You may say N here if you are going to load the Acorn FPEmulator
1166 early in the bootup.
1169 bool "Support extended precision"
1170 depends on FPE_NWFPE
1172 Say Y to include 80-bit support in the kernel floating-point
1173 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1174 Note that gcc does not generate 80-bit operations by default,
1175 so in most cases this option only enlarges the size of the
1176 floating point emulator without any good reason.
1178 You almost surely want to say N here.
1181 bool "FastFPE math emulation (EXPERIMENTAL)"
1182 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1184 Say Y here to include the FAST floating point emulator in the kernel.
1185 This is an experimental much faster emulator which now also has full
1186 precision for the mantissa. It does not support any exceptions.
1187 It is very simple, and approximately 3-6 times faster than NWFPE.
1189 It should be sufficient for most programs. It may be not suitable
1190 for scientific calculations, but you have to check this for yourself.
1191 If you do not feel you need a faster FP emulation you should better
1195 bool "VFP-format floating point maths"
1196 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1198 Say Y to include VFP support code in the kernel. This is needed
1199 if your hardware includes a VFP unit.
1201 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1202 release notes and additional status information.
1204 Say N if your target does not have VFP hardware.
1212 bool "Advanced SIMD (NEON) Extension support"
1213 depends on VFPv3 && CPU_V7
1215 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1220 menu "Userspace binary formats"
1222 source "fs/Kconfig.binfmt"
1225 tristate "RISC OS personality"
1228 Say Y here to include the kernel code necessary if you want to run
1229 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1230 experimental; if this sounds frightening, say N and sleep in peace.
1231 You can also say M here to compile this support as a module (which
1232 will be called arthur).
1236 menu "Power management options"
1238 source "kernel/power/Kconfig"
1240 config ARCH_SUSPEND_POSSIBLE
1245 source "net/Kconfig"
1247 menu "Device Drivers"
1249 source "drivers/base/Kconfig"
1251 source "drivers/connector/Kconfig"
1253 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1254 source "drivers/mtd/Kconfig"
1257 source "drivers/parport/Kconfig"
1259 source "drivers/pnp/Kconfig"
1261 source "drivers/block/Kconfig"
1263 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1265 source "drivers/misc/Kconfig"
1267 source "drivers/ide/Kconfig"
1269 source "drivers/scsi/Kconfig"
1271 source "drivers/ata/Kconfig"
1273 source "drivers/md/Kconfig"
1275 source "drivers/message/fusion/Kconfig"
1277 source "drivers/ieee1394/Kconfig"
1279 source "drivers/message/i2o/Kconfig"
1281 source "drivers/net/Kconfig"
1283 source "drivers/isdn/Kconfig"
1285 # input before char - char/joystick depends on it. As does USB.
1287 source "drivers/input/Kconfig"
1289 source "drivers/char/Kconfig"
1291 source "drivers/i2c/Kconfig"
1293 source "drivers/spi/Kconfig"
1295 source "drivers/gpio/Kconfig"
1297 source "drivers/w1/Kconfig"
1299 source "drivers/power/Kconfig"
1301 source "drivers/hwmon/Kconfig"
1303 source "drivers/thermal/Kconfig"
1305 source "drivers/watchdog/Kconfig"
1307 source "drivers/ssb/Kconfig"
1309 #source "drivers/l3/Kconfig"
1311 source "drivers/mfd/Kconfig"
1313 source "drivers/media/Kconfig"
1315 source "drivers/video/Kconfig"
1317 source "sound/Kconfig"
1319 source "drivers/hid/Kconfig"
1321 source "drivers/usb/Kconfig"
1323 source "drivers/uwb/Kconfig"
1325 source "drivers/mmc/Kconfig"
1327 source "drivers/memstick/Kconfig"
1329 source "drivers/accessibility/Kconfig"
1331 source "drivers/leds/Kconfig"
1333 source "drivers/rtc/Kconfig"
1335 source "drivers/dma/Kconfig"
1337 source "drivers/dca/Kconfig"
1339 source "drivers/auxdisplay/Kconfig"
1341 source "drivers/regulator/Kconfig"
1343 source "drivers/uio/Kconfig"
1345 source "drivers/staging/Kconfig"
1351 source "arch/arm/Kconfig.debug"
1353 source "security/Kconfig"
1355 source "crypto/Kconfig"
1357 source "lib/Kconfig"