| # |
| # For a description of the syntax of this configuration file, |
| # see Documentation/kbuild/kconfig-language.txt. |
| # |
| |
| mainmenu "Linux Kernel Configuration" |
| |
| config ARM |
| bool |
| default y |
| select RTC_LIB |
| select SYS_SUPPORTS_APM_EMULATION |
| select HAVE_OPROFILE |
| select HAVE_KPROBES if (!XIP_KERNEL) |
| select HAVE_KRETPROBES if (HAVE_KPROBES) |
| help |
| The ARM series is a line of low-power-consumption RISC chip designs |
| licensed by ARM Ltd and targeted at embedded applications and |
| handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
| manufactured, but legacy ARM-based PC hardware remains popular in |
| Europe. There is an ARM Linux project with a web page at |
| <http://www.arm.linux.org.uk/>. |
| |
| config SYS_SUPPORTS_APM_EMULATION |
| bool |
| |
| config GENERIC_GPIO |
| bool |
| default n |
| |
| config GENERIC_TIME |
| bool |
| default n |
| |
| config GENERIC_CLOCKEVENTS |
| bool |
| default n |
| |
| config GENERIC_CLOCKEVENTS_BROADCAST |
| bool |
| depends on GENERIC_CLOCKEVENTS |
| default y if SMP && !LOCAL_TIMERS |
| |
| config MMU |
| bool |
| default y |
| |
| config NO_IOPORT |
| bool |
| default n |
| |
| config EISA |
| bool |
| ---help--- |
| The Extended Industry Standard Architecture (EISA) bus was |
| developed as an open alternative to the IBM MicroChannel bus. |
| |
| The EISA bus provided some of the features of the IBM MicroChannel |
| bus while maintaining backward compatibility with cards made for |
| the older ISA bus. The EISA bus saw limited use between 1988 and |
| 1995 when it was made obsolete by the PCI bus. |
| |
| Say Y here if you are building a kernel for an EISA-based machine. |
| |
| Otherwise, say N. |
| |
| config SBUS |
| bool |
| |
| config MCA |
| bool |
| help |
| MicroChannel Architecture is found in some IBM PS/2 machines and |
| laptops. It is a bus system similar to PCI or ISA. See |
| <file:Documentation/mca.txt> (and especially the web page given |
| there) before attempting to build an MCA bus kernel. |
| |
| config GENERIC_HARDIRQS |
| bool |
| default y |
| |
| config STACKTRACE_SUPPORT |
| bool |
| default y |
| |
| config LOCKDEP_SUPPORT |
| bool |
| default y |
| |
| config TRACE_IRQFLAGS_SUPPORT |
| bool |
| default y |
| |
| config HARDIRQS_SW_RESEND |
| bool |
| default y |
| |
| config GENERIC_IRQ_PROBE |
| bool |
| default y |
| |
| config GENERIC_LOCKBREAK |
| bool |
| default y |
| depends on SMP && PREEMPT |
| |
| config RWSEM_GENERIC_SPINLOCK |
| bool |
| default y |
| |
| config RWSEM_XCHGADD_ALGORITHM |
| bool |
| |
| config ARCH_HAS_ILOG2_U32 |
| bool |
| default n |
| |
| config ARCH_HAS_ILOG2_U64 |
| bool |
| default n |
| |
| config GENERIC_HWEIGHT |
| bool |
| default y |
| |
| config GENERIC_CALIBRATE_DELAY |
| bool |
| default y |
| |
| config ARCH_SUPPORTS_AOUT |
| def_bool y |
| |
| config ARCH_MAY_HAVE_PC_FDC |
| bool |
| |
| config ZONE_DMA |
| bool |
| default y |
| |
| config GENERIC_ISA_DMA |
| bool |
| |
| config FIQ |
| bool |
| |
| config ARCH_MTD_XIP |
| bool |
| |
| if OPROFILE |
| |
| config OPROFILE_ARMV6 |
| def_bool y |
| depends on CPU_V6 && !SMP |
| select OPROFILE_ARM11_CORE |
| |
| config OPROFILE_MPCORE |
| def_bool y |
| depends on CPU_V6 && SMP |
| select OPROFILE_ARM11_CORE |
| |
| config OPROFILE_ARM11_CORE |
| bool |
| |
| endif |
| |
| config VECTORS_BASE |
| hex |
| default 0xffff0000 if MMU || CPU_HIGH_VECTOR |
| default DRAM_BASE if REMAP_VECTORS_TO_RAM |
| default 0x00000000 |
| help |
| The base address of exception vectors. |
| |
| source "init/Kconfig" |
| |
| menu "System Type" |
| |
| choice |
| prompt "ARM system type" |
| default ARCH_VERSATILE |
| |
| config ARCH_AAEC2000 |
| bool "Agilent AAEC-2000 based" |
| select ARM_AMBA |
| help |
| This enables support for systems based on the Agilent AAEC-2000 |
| |
| config ARCH_INTEGRATOR |
| bool "ARM Ltd. Integrator family" |
| select ARM_AMBA |
| select ICST525 |
| help |
| Support for ARM's Integrator platform. |
| |
| config ARCH_REALVIEW |
| bool "ARM Ltd. RealView family" |
| select ARM_AMBA |
| select ICST307 |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| help |
| This enables support for ARM Ltd RealView boards. |
| |
| config ARCH_VERSATILE |
| bool "ARM Ltd. Versatile family" |
| select ARM_AMBA |
| select ARM_VIC |
| select ICST307 |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| help |
| This enables support for ARM Ltd Versatile board. |
| |
| config ARCH_AT91 |
| bool "Atmel AT91" |
| select GENERIC_GPIO |
| help |
| This enables support for systems based on the Atmel AT91RM9200, |
| AT91SAM9 and AT91CAP9 processors. |
| |
| config ARCH_CLPS7500 |
| bool "Cirrus CL-PS7500FE" |
| select TIMER_ACORN |
| select ISA |
| select NO_IOPORT |
| select HAVE_IDE |
| help |
| Support for the Cirrus Logic PS7500FE system-on-a-chip. |
| |
| config ARCH_CLPS711X |
| bool "Cirrus Logic CLPS711x/EP721x-based" |
| help |
| Support for Cirrus Logic 711x/721x based boards. |
| |
| config ARCH_CO285 |
| bool "Co-EBSA285" |
| select FOOTBRIDGE |
| select FOOTBRIDGE_ADDIN |
| select HAVE_IDE |
| help |
| Support for Intel's EBSA285 companion chip. |
| |
| config ARCH_EBSA110 |
| bool "EBSA-110" |
| select ISA |
| select NO_IOPORT |
| help |
| This is an evaluation board for the StrongARM processor available |
| from Digital. It has limited hardware on-board, including an |
| Ethernet interface, two PCMCIA sockets, two serial ports and a |
| parallel port. |
| |
| config ARCH_EP93XX |
| bool "EP93xx-based" |
| select ARM_AMBA |
| select ARM_VIC |
| select GENERIC_GPIO |
| select HAVE_GPIO_LIB |
| help |
| This enables support for the Cirrus EP93xx series of CPUs. |
| |
| config ARCH_FOOTBRIDGE |
| bool "FootBridge" |
| select FOOTBRIDGE |
| select HAVE_IDE |
| help |
| Support for systems based on the DC21285 companion chip |
| ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. |
| |
| config ARCH_NETX |
| bool "Hilscher NetX based" |
| select ARM_VIC |
| help |
| This enables support for systems based on the Hilscher NetX Soc |
| |
| config ARCH_H720X |
| bool "Hynix HMS720x-based" |
| select ISA_DMA_API |
| help |
| This enables support for systems based on the Hynix HMS720x |
| |
| config ARCH_IMX |
| bool "IMX" |
| select GENERIC_GPIO |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| help |
| Support for Motorola's i.MX family of processors (MX1, MXL). |
| |
| config ARCH_IOP13XX |
| bool "IOP13xx-based" |
| depends on MMU |
| select PLAT_IOP |
| select PCI |
| select ARCH_SUPPORTS_MSI |
| help |
| Support for Intel's IOP13XX (XScale) family of processors. |
| |
| config ARCH_IOP32X |
| bool "IOP32x-based" |
| depends on MMU |
| select PLAT_IOP |
| select PCI |
| select HAVE_IDE |
| help |
| Support for Intel's 80219 and IOP32X (XScale) family of |
| processors. |
| |
| config ARCH_IOP33X |
| bool "IOP33x-based" |
| depends on MMU |
| select PLAT_IOP |
| select PCI |
| select HAVE_IDE |
| help |
| Support for Intel's IOP33X (XScale) family of processors. |
| |
| config ARCH_IXP23XX |
| bool "IXP23XX-based" |
| depends on MMU |
| select HAVE_IDE |
| select PCI |
| help |
| Support for Intel's IXP23xx (XScale) family of processors. |
| |
| config ARCH_IXP2000 |
| bool "IXP2400/2800-based" |
| depends on MMU |
| select PCI |
| help |
| Support for Intel's IXP2400/2800 (XScale) family of processors. |
| |
| config ARCH_IXP4XX |
| bool "IXP4xx-based" |
| depends on MMU |
| select GENERIC_GPIO |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| select HAVE_IDE |
| help |
| Support for Intel's IXP4XX (XScale) family of processors. |
| |
| config ARCH_L7200 |
| bool "LinkUp-L7200" |
| select FIQ |
| select HAVE_IDE |
| help |
| Say Y here if you intend to run this kernel on a LinkUp Systems |
| L7200 Software Development Board which uses an ARM720T processor. |
| Information on this board can be obtained at: |
| |
| <http://www.linkupsys.com/> |
| |
| If you have any questions or comments about the Linux kernel port |
| to this board, send e-mail to <sjhill@cotw.com>. |
| |
| config ARCH_KS8695 |
| bool "Micrel/Kendin KS8695" |
| select GENERIC_GPIO |
| help |
| Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based |
| System-on-Chip devices. |
| |
| config ARCH_NS9XXX |
| bool "NetSilicon NS9xxx" |
| select GENERIC_GPIO |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| help |
| Say Y here if you intend to run this kernel on a NetSilicon NS9xxx |
| System. |
| |
| <http://www.digi.com/products/microprocessors/index.jsp> |
| |
| config ARCH_MXC |
| bool "Freescale MXC/iMX-based" |
| select ARCH_MTD_XIP |
| help |
| Support for Freescale MXC/iMX-based family of processors |
| |
| config ARCH_ORION5X |
| bool "Marvell Orion" |
| depends on MMU |
| select PCI |
| select GENERIC_GPIO |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| select PLAT_ORION |
| help |
| Support for the following Marvell Orion 5x series SoCs: |
| Orion-1 (5181), Orion-NAS (5182), Orion-2 (5281.) |
| |
| config ARCH_PNX4008 |
| bool "Philips Nexperia PNX4008 Mobile" |
| help |
| This enables support for Philips PNX4008 mobile platform. |
| |
| config ARCH_PXA |
| bool "PXA2xx/PXA3xx-based" |
| depends on MMU |
| select ARCH_MTD_XIP |
| select GENERIC_GPIO |
| select HAVE_IDE |
| select HAVE_GPIO_LIB |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| select TICK_ONESHOT |
| help |
| Support for Intel/Marvell's PXA2xx/PXA3xx processor line. |
| |
| config ARCH_RPC |
| bool "RiscPC" |
| select ARCH_ACORN |
| select FIQ |
| select TIMER_ACORN |
| select ARCH_MAY_HAVE_PC_FDC |
| select ISA_DMA_API |
| select NO_IOPORT |
| select HAVE_IDE |
| help |
| On the Acorn Risc-PC, Linux can support the internal IDE disk and |
| CD-ROM interface, serial and parallel port, and the floppy drive. |
| |
| config ARCH_SA1100 |
| bool "SA1100-based" |
| select ISA |
| select ARCH_DISCONTIGMEM_ENABLE |
| select ARCH_SPARSEMEM_ENABLE |
| select ARCH_SELECT_MEMORY_MODEL |
| select ARCH_MTD_XIP |
| select GENERIC_GPIO |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| select TICK_ONESHOT |
| select HAVE_IDE |
| select HAVE_GPIO_LIB |
| help |
| Support for StrongARM 11x0 based boards. |
| |
| config ARCH_S3C2410 |
| bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" |
| select GENERIC_GPIO |
| select HAVE_IDE |
| help |
| Samsung S3C2410X CPU based systems, such as the Simtec Electronics |
| BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or |
| the Samsung SMDK2410 development board (and derivatives). |
| |
| config ARCH_SHARK |
| bool "Shark" |
| select HAVE_IDE |
| select ISA |
| select ISA_DMA |
| select PCI |
| help |
| Support for the StrongARM based Digital DNARD machine, also known |
| as "Shark" (<http://www.shark-linux.de/shark.html>). |
| |
| config ARCH_LH7A40X |
| bool "Sharp LH7A40X" |
| select HAVE_IDE |
| help |
| Say Y here for systems based on one of the Sharp LH7A40X |
| System on a Chip processors. These CPUs include an ARM922T |
| core with a wide array of integrated devices for |
| hand-held and low-power applications. |
| |
| config ARCH_DAVINCI |
| bool "TI DaVinci" |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| select GENERIC_GPIO |
| help |
| Support for TI's DaVinci platform. |
| |
| config ARCH_OMAP |
| bool "TI OMAP" |
| select GENERIC_GPIO |
| select HAVE_GPIO_LIB |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| help |
| Support for TI's OMAP platform (OMAP1 and OMAP2). |
| |
| config ARCH_MSM7X00A |
| bool "Qualcomm MSM7X00A" |
| select GENERIC_TIME |
| select GENERIC_CLOCKEVENTS |
| help |
| Support for Qualcomm MSM7X00A based systems. This runs on the ARM11 |
| apps processor of the MSM7X00A and depends on a shared memory |
| interface to the ARM9 modem processor which runs the baseband stack |
| and controls some vital subsystems (clock and power control, etc). |
| <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp> |
| |
| endchoice |
| |
| source "arch/arm/mach-clps711x/Kconfig" |
| |
| source "arch/arm/mach-ep93xx/Kconfig" |
| |
| source "arch/arm/mach-footbridge/Kconfig" |
| |
| source "arch/arm/mach-integrator/Kconfig" |
| |
| source "arch/arm/mach-iop32x/Kconfig" |
| |
| source "arch/arm/mach-iop33x/Kconfig" |
| |
| source "arch/arm/mach-iop13xx/Kconfig" |
| |
| source "arch/arm/mach-ixp4xx/Kconfig" |
| |
| source "arch/arm/mach-ixp2000/Kconfig" |
| |
| source "arch/arm/mach-ixp23xx/Kconfig" |
| |
| source "arch/arm/mach-pxa/Kconfig" |
| |
| source "arch/arm/mach-sa1100/Kconfig" |
| |
| source "arch/arm/plat-omap/Kconfig" |
| |
| source "arch/arm/mach-omap1/Kconfig" |
| |
| source "arch/arm/mach-omap2/Kconfig" |
| |
| source "arch/arm/mach-orion5x/Kconfig" |
| |
| source "arch/arm/plat-s3c24xx/Kconfig" |
| source "arch/arm/plat-s3c/Kconfig" |
| |
| if ARCH_S3C2410 |
| source "arch/arm/mach-s3c2400/Kconfig" |
| source "arch/arm/mach-s3c2410/Kconfig" |
| source "arch/arm/mach-s3c2412/Kconfig" |
| source "arch/arm/mach-s3c2440/Kconfig" |
| source "arch/arm/mach-s3c2442/Kconfig" |
| source "arch/arm/mach-s3c2443/Kconfig" |
| endif |
| |
| source "arch/arm/mach-lh7a40x/Kconfig" |
| |
| source "arch/arm/mach-imx/Kconfig" |
| |
| source "arch/arm/mach-h720x/Kconfig" |
| |
| source "arch/arm/mach-versatile/Kconfig" |
| |
| source "arch/arm/mach-aaec2000/Kconfig" |
| |
| source "arch/arm/mach-realview/Kconfig" |
| |
| source "arch/arm/mach-at91/Kconfig" |
| |
| source "arch/arm/plat-mxc/Kconfig" |
| |
| source "arch/arm/mach-netx/Kconfig" |
| |
| source "arch/arm/mach-ns9xxx/Kconfig" |
| |
| source "arch/arm/mach-davinci/Kconfig" |
| |
| source "arch/arm/mach-ks8695/Kconfig" |
| |
| source "arch/arm/mach-msm/Kconfig" |
| |
| # Definitions to make life easier |
| config ARCH_ACORN |
| bool |
| |
| config PLAT_IOP |
| bool |
| |
| config PLAT_ORION |
| bool |
| |
| source arch/arm/mm/Kconfig |
| |
| config IWMMXT |
| bool "Enable iWMMXt support" |
| depends on CPU_XSCALE || CPU_XSC3 |
| default y if PXA27x || PXA3xx |
| help |
| Enable support for iWMMXt context switching at run time if |
| running on a CPU that supports it. |
| |
| # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
| config XSCALE_PMU |
| bool |
| depends on CPU_XSCALE && !XSCALE_PMU_TIMER |
| default y |
| |
| if !MMU |
| source "arch/arm/Kconfig-nommu" |
| endif |
| |
| endmenu |
| |
| source "arch/arm/common/Kconfig" |
| |
| config FORCE_MAX_ZONEORDER |
| int |
| depends on SA1111 |
| default "9" |
| |
| menu "Bus support" |
| |
| config ARM_AMBA |
| bool |
| |
| config ISA |
| bool |
| help |
| Find out whether you have ISA slots on your motherboard. ISA is the |
| name of a bus system, i.e. the way the CPU talks to the other stuff |
| inside your box. Other bus systems are PCI, EISA, MicroChannel |
| (MCA) or VESA. ISA is an older system, now being displaced by PCI; |
| newer boards don't support it. If you have ISA, say Y, otherwise N. |
| |
| # Select ISA DMA controller support |
| config ISA_DMA |
| bool |
| select ISA_DMA_API |
| |
| # Select ISA DMA interface |
| config ISA_DMA_API |
| bool |
| |
| config PCI |
| bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE |
| help |
| Find out whether you have a PCI motherboard. PCI is the name of a |
| bus system, i.e. the way the CPU talks to the other stuff inside |
| your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or |
| VESA. If you have PCI, say Y, otherwise N. |
| |
| config PCI_SYSCALL |
| def_bool PCI |
| |
| # Select the host bridge type |
| config PCI_HOST_VIA82C505 |
| bool |
| depends on PCI && ARCH_SHARK |
| default y |
| |
| config PCI_HOST_ITE8152 |
| bool |
| depends on PCI && MACH_ARMCORE |
| default y |
| select DMABOUNCE |
| |
| source "drivers/pci/Kconfig" |
| |
| source "drivers/pcmcia/Kconfig" |
| |
| endmenu |
| |
| menu "Kernel Features" |
| |
| source "kernel/time/Kconfig" |
| |
| config SMP |
| bool "Symmetric Multi-Processing (EXPERIMENTAL)" |
| depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP) |
| help |
| This enables support for systems with more than one CPU. If you have |
| a system with only one CPU, like most personal computers, say N. If |
| you have a system with more than one CPU, say Y. |
| |
| If you say N here, the kernel will run on single and multiprocessor |
| machines, but will use only one CPU of a multiprocessor machine. If |
| you say Y here, the kernel will run on many, but not all, single |
| processor machines. On a single processor machine, the kernel will |
| run faster if you say N here. |
| |
| See also <file:Documentation/i386/IO-APIC.txt>, |
| <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
| <http://www.linuxdoc.org/docs.html#howto>. |
| |
| If you don't know what to do here, say N. |
| |
| config NR_CPUS |
| int "Maximum number of CPUs (2-32)" |
| range 2 32 |
| depends on SMP |
| default "4" |
| |
| config HOTPLUG_CPU |
| bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" |
| depends on SMP && HOTPLUG && EXPERIMENTAL |
| help |
| Say Y here to experiment with turning CPUs off and on. CPUs |
| can be controlled through /sys/devices/system/cpu. |
| |
| config LOCAL_TIMERS |
| bool "Use local timer interrupts" |
| depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP) |
| default y |
| help |
| Enable support for local timers on SMP platforms, rather then the |
| legacy IPI broadcast method. Local timers allows the system |
| accounting to be spread across the timer interval, preventing a |
| "thundering herd" at every timer tick. |
| |
| config PREEMPT |
| bool "Preemptible Kernel (EXPERIMENTAL)" |
| depends on EXPERIMENTAL |
| help |
| This option reduces the latency of the kernel when reacting to |
| real-time or interactive events by allowing a low priority process to |
| be preempted even if it is in kernel mode executing a system call. |
| This allows applications to run more reliably even when the system is |
| under load. |
| |
| Say Y here if you are building a kernel for a desktop, embedded |
| or real-time system. Say N if you are unsure. |
| |
| config NO_IDLE_HZ |
| bool "Dynamic tick timer" |
| depends on !GENERIC_CLOCKEVENTS |
| help |
| Select this option if you want to disable continuous timer ticks |
| and have them programmed to occur as required. This option saves |
| power as the system can remain in idle state for longer. |
| |
| By default dynamic tick is disabled during the boot, and can be |
| manually enabled with: |
| |
| echo 1 > /sys/devices/system/timer/timer0/dyn_tick |
| |
| Alternatively, if you want dynamic tick automatically enabled |
| during boot, pass "dyntick=enable" via the kernel command string. |
| |
| Please note that dynamic tick may affect the accuracy of |
| timekeeping on some platforms depending on the implementation. |
| Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
| to have accurate timekeeping with dynamic tick. |
| |
| config HZ |
| int |
| default 128 if ARCH_L7200 |
| default 200 if ARCH_EBSA110 || ARCH_S3C2410 |
| default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
| default AT91_TIMER_HZ if ARCH_AT91 |
| default 100 |
| |
| config AEABI |
| bool "Use the ARM EABI to compile the kernel" |
| help |
| This option allows for the kernel to be compiled using the latest |
| ARM ABI (aka EABI). This is only useful if you are using a user |
| space environment that is also compiled with EABI. |
| |
| Since there are major incompatibilities between the legacy ABI and |
| EABI, especially with regard to structure member alignment, this |
| option also changes the kernel syscall calling convention to |
| disambiguate both ABIs and allow for backward compatibility support |
| (selected with CONFIG_OABI_COMPAT). |
| |
| To use this you need GCC version 4.0.0 or later. |
| |
| config OABI_COMPAT |
| bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
| depends on AEABI && EXPERIMENTAL |
| default y |
| help |
| This option preserves the old syscall interface along with the |
| new (ARM EABI) one. It also provides a compatibility layer to |
| intercept syscalls that have structure arguments which layout |
| in memory differs between the legacy ABI and the new ARM EABI |
| (only for non "thumb" binaries). This option adds a tiny |
| overhead to all syscalls and produces a slightly larger kernel. |
| If you know you'll be using only pure EABI user space then you |
| can say N here. If this option is not selected and you attempt |
| to execute a legacy ABI binary then the result will be |
| UNPREDICTABLE (in fact it can be predicted that it won't work |
| at all). If in doubt say Y. |
| |
| config ARCH_DISCONTIGMEM_ENABLE |
| bool |
| default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
| help |
| Say Y to support efficient handling of discontiguous physical memory, |
| for architectures which are either NUMA (Non-Uniform Memory Access) |
| or have huge holes in the physical address space for other reasons. |
| See <file:Documentation/vm/numa> for more. |
| |
| config ARCH_SPARSEMEM_ENABLE |
| bool |
| |
| config ARCH_SELECT_MEMORY_MODEL |
| bool |
| |
| config NODES_SHIFT |
| int |
| default "4" if ARCH_LH7A40X |
| default "2" |
| depends on NEED_MULTIPLE_NODES |
| |
| source "mm/Kconfig" |
| |
| config LEDS |
| bool "Timer and CPU usage LEDs" |
| depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ |
| ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ |
| ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ |
| ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ |
| ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
| ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \ |
| ARCH_KS8695 || MACH_RD88F5182 |
| help |
| If you say Y here, the LEDs on your machine will be used |
| to provide useful information about your current system status. |
| |
| If you are compiling a kernel for a NetWinder or EBSA-285, you will |
| be able to select which LEDs are active using the options below. If |
| you are compiling a kernel for the EBSA-110 or the LART however, the |
| red LED will simply flash regularly to indicate that the system is |
| still functional. It is safe to say Y here if you have a CATS |
| system, but the driver will do nothing. |
| |
| config LEDS_TIMER |
| bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ |
| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ |
| || MACH_OMAP_PERSEUS2 |
| depends on LEDS |
| depends on !GENERIC_CLOCKEVENTS |
| default y if ARCH_EBSA110 |
| help |
| If you say Y here, one of the system LEDs (the green one on the |
| NetWinder, the amber one on the EBSA285, or the red one on the LART) |
| will flash regularly to indicate that the system is still |
| operational. This is mainly useful to kernel hackers who are |
| debugging unstable kernels. |
| |
| The LART uses the same LED for both Timer LED and CPU usage LED |
| functions. You may choose to use both, but the Timer LED function |
| will overrule the CPU usage LED. |
| |
| config LEDS_CPU |
| bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ |
| !ARCH_OMAP) \ |
| || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ |
| || MACH_OMAP_PERSEUS2 |
| depends on LEDS |
| help |
| If you say Y here, the red LED will be used to give a good real |
| time indication of CPU usage, by lighting whenever the idle task |
| is not currently executing. |
| |
| The LART uses the same LED for both Timer LED and CPU usage LED |
| functions. You may choose to use both, but the Timer LED function |
| will overrule the CPU usage LED. |
| |
| config ALIGNMENT_TRAP |
| bool |
| depends on CPU_CP15_MMU |
| default y if !ARCH_EBSA110 |
| help |
| ARM processors cannot fetch/store information which is not |
| naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
| address divisible by 4. On 32-bit ARM processors, these non-aligned |
| fetch/store instructions will be emulated in software if you say |
| here, which has a severe performance impact. This is necessary for |
| correct operation of some network protocols. With an IP-only |
| configuration it is safe to say N, otherwise say Y. |
| |
| endmenu |
| |
| menu "Boot options" |
| |
| # Compressed boot loader in ROM. Yes, we really want to ask about |
| # TEXT and BSS so we preserve their values in the config files. |
| config ZBOOT_ROM_TEXT |
| hex "Compressed ROM boot loader base address" |
| default "0" |
| help |
| The physical address at which the ROM-able zImage is to be |
| placed in the target. Platforms which normally make use of |
| ROM-able zImage formats normally set this to a suitable |
| value in their defconfig file. |
| |
| If ZBOOT_ROM is not enabled, this has no effect. |
| |
| config ZBOOT_ROM_BSS |
| hex "Compressed ROM boot loader BSS address" |
| default "0" |
| help |
| The base address of an area of read/write memory in the target |
| for the ROM-able zImage which must be available while the |
| decompressor is running. It must be large enough to hold the |
| entire decompressed kernel plus an additional 128 KiB. |
| Platforms which normally make use of ROM-able zImage formats |
| normally set this to a suitable value in their defconfig file. |
| |
| If ZBOOT_ROM is not enabled, this has no effect. |
| |
| config ZBOOT_ROM |
| bool "Compressed boot loader in ROM/flash" |
| depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS |
| help |
| Say Y here if you intend to execute your compressed kernel image |
| (zImage) directly from ROM or flash. If unsure, say N. |
| |
| config CMDLINE |
| string "Default kernel command string" |
| default "" |
| help |
| On some architectures (EBSA110 and CATS), there is currently no way |
| for the boot loader to pass arguments to the kernel. For these |
| architectures, you should supply some command-line options at build |
| time by entering them here. As a minimum, you should specify the |
| memory size and the root device (e.g., mem=64M root=/dev/nfs). |
| |
| config XIP_KERNEL |
| bool "Kernel Execute-In-Place from ROM" |
| depends on !ZBOOT_ROM |
| help |
| Execute-In-Place allows the kernel to run from non-volatile storage |
| directly addressable by the CPU, such as NOR flash. This saves RAM |
| space since the text section of the kernel is not loaded from flash |
| to RAM. Read-write sections, such as the data section and stack, |
| are still copied to RAM. The XIP kernel is not compressed since |
| it has to run directly from flash, so it will take more space to |
| store it. The flash address used to link the kernel object files, |
| and for storing it, is configuration dependent. Therefore, if you |
| say Y here, you must know the proper physical address where to |
| store the kernel image depending on your own flash memory usage. |
| |
| Also note that the make target becomes "make xipImage" rather than |
| "make zImage" or "make Image". The final kernel binary to put in |
| ROM memory will be arch/arm/boot/xipImage. |
| |
| If unsure, say N. |
| |
| config XIP_PHYS_ADDR |
| hex "XIP Kernel Physical Location" |
| depends on XIP_KERNEL |
| default "0x00080000" |
| help |
| This is the physical address in your flash memory the kernel will |
| be linked for and stored to. This address is dependent on your |
| own flash usage. |
| |
| config KEXEC |
| bool "Kexec system call (EXPERIMENTAL)" |
| depends on EXPERIMENTAL |
| help |
| kexec is a system call that implements the ability to shutdown your |
| current kernel, and to start another kernel. It is like a reboot |
| but it is independent of the system firmware. And like a reboot |
| you can start any kernel with it, not just Linux. |
| |
| It is an ongoing process to be certain the hardware in a machine |
| is properly shutdown, so do not be surprised if this code does not |
| initially work for you. It may help to enable device hotplugging |
| support. |
| |
| config ATAGS_PROC |
| bool "Export atags in procfs" |
| depends on KEXEC |
| default y |
| help |
| Should the atags used to boot the kernel be exported in an "atags" |
| file in procfs. Useful with kexec. |
| |
| endmenu |
| |
| if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA) |
| |
| menu "CPU Frequency scaling" |
| |
| source "drivers/cpufreq/Kconfig" |
| |
| config CPU_FREQ_SA1100 |
| bool |
| depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
| default y |
| |
| config CPU_FREQ_SA1110 |
| bool |
| depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) |
| default y |
| |
| config CPU_FREQ_INTEGRATOR |
| tristate "CPUfreq driver for ARM Integrator CPUs" |
| depends on ARCH_INTEGRATOR && CPU_FREQ |
| default y |
| help |
| This enables the CPUfreq driver for ARM Integrator CPUs. |
| |
| For details, take a look at <file:Documentation/cpu-freq>. |
| |
| If in doubt, say Y. |
| |
| config CPU_FREQ_IMX |
| tristate "CPUfreq driver for i.MX CPUs" |
| depends on ARCH_IMX && CPU_FREQ |
| default n |
| help |
| This enables the CPUfreq driver for i.MX CPUs. |
| |
| If in doubt, say N. |
| |
| config CPU_FREQ_PXA |
| bool |
| depends on CPU_FREQ && ARCH_PXA && PXA25x |
| default y |
| select CPU_FREQ_DEFAULT_GOV_USERSPACE |
| |
| endmenu |
| |
| endif |
| |
| menu "Floating point emulation" |
| |
| comment "At least one emulation must be selected" |
| |
| config FPE_NWFPE |
| bool "NWFPE math emulation" |
| depends on !AEABI || OABI_COMPAT |
| ---help--- |
| Say Y to include the NWFPE floating point emulator in the kernel. |
| This is necessary to run most binaries. Linux does not currently |
| support floating point hardware so you need to say Y here even if |
| your machine has an FPA or floating point co-processor podule. |
| |
| You may say N here if you are going to load the Acorn FPEmulator |
| early in the bootup. |
| |
| config FPE_NWFPE_XP |
| bool "Support extended precision" |
| depends on FPE_NWFPE |
| help |
| Say Y to include 80-bit support in the kernel floating-point |
| emulator. Otherwise, only 32 and 64-bit support is compiled in. |
| Note that gcc does not generate 80-bit operations by default, |
| so in most cases this option only enlarges the size of the |
| floating point emulator without any good reason. |
| |
| You almost surely want to say N here. |
| |
| config FPE_FASTFPE |
| bool "FastFPE math emulation (EXPERIMENTAL)" |
| depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
| ---help--- |
| Say Y here to include the FAST floating point emulator in the kernel. |
| This is an experimental much faster emulator which now also has full |
| precision for the mantissa. It does not support any exceptions. |
| It is very simple, and approximately 3-6 times faster than NWFPE. |
| |
| It should be sufficient for most programs. It may be not suitable |
| for scientific calculations, but you have to check this for yourself. |
| If you do not feel you need a faster FP emulation you should better |
| choose NWFPE. |
| |
| config VFP |
| bool "VFP-format floating point maths" |
| depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON |
| help |
| Say Y to include VFP support code in the kernel. This is needed |
| if your hardware includes a VFP unit. |
| |
| Please see <file:Documentation/arm/VFP/release-notes.txt> for |
| release notes and additional status information. |
| |
| Say N if your target does not have VFP hardware. |
| |
| config VFPv3 |
| bool |
| depends on VFP |
| default y if CPU_V7 |
| |
| config NEON |
| bool "Advanced SIMD (NEON) Extension support" |
| depends on VFPv3 && CPU_V7 |
| help |
| Say Y to include support code for NEON, the ARMv7 Advanced SIMD |
| Extension. |
| |
| endmenu |
| |
| menu "Userspace binary formats" |
| |
| source "fs/Kconfig.binfmt" |
| |
| config ARTHUR |
| tristate "RISC OS personality" |
| depends on !AEABI |
| help |
| Say Y here to include the kernel code necessary if you want to run |
| Acorn RISC OS/Arthur binaries under Linux. This code is still very |
| experimental; if this sounds frightening, say N and sleep in peace. |
| You can also say M here to compile this support as a module (which |
| will be called arthur). |
| |
| endmenu |
| |
| menu "Power management options" |
| |
| source "kernel/power/Kconfig" |
| |
| config ARCH_SUSPEND_POSSIBLE |
| def_bool y |
| |
| endmenu |
| |
| source "net/Kconfig" |
| |
| menu "Device Drivers" |
| |
| source "drivers/base/Kconfig" |
| |
| source "drivers/connector/Kconfig" |
| |
| if ALIGNMENT_TRAP || !CPU_CP15_MMU |
| source "drivers/mtd/Kconfig" |
| endif |
| |
| source "drivers/parport/Kconfig" |
| |
| source "drivers/pnp/Kconfig" |
| |
| source "drivers/block/Kconfig" |
| |
| # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4 |
| |
| source "drivers/misc/Kconfig" |
| |
| source "drivers/ide/Kconfig" |
| |
| source "drivers/scsi/Kconfig" |
| |
| source "drivers/ata/Kconfig" |
| |
| source "drivers/md/Kconfig" |
| |
| source "drivers/message/fusion/Kconfig" |
| |
| source "drivers/ieee1394/Kconfig" |
| |
| source "drivers/message/i2o/Kconfig" |
| |
| source "drivers/net/Kconfig" |
| |
| source "drivers/isdn/Kconfig" |
| |
| # input before char - char/joystick depends on it. As does USB. |
| |
| source "drivers/input/Kconfig" |
| |
| source "drivers/char/Kconfig" |
| |
| source "drivers/i2c/Kconfig" |
| |
| source "drivers/spi/Kconfig" |
| |
| source "drivers/gpio/Kconfig" |
| |
| source "drivers/w1/Kconfig" |
| |
| source "drivers/power/Kconfig" |
| |
| source "drivers/hwmon/Kconfig" |
| |
| source "drivers/watchdog/Kconfig" |
| |
| source "drivers/ssb/Kconfig" |
| |
| #source "drivers/l3/Kconfig" |
| |
| source "drivers/mfd/Kconfig" |
| |
| source "drivers/media/Kconfig" |
| |
| source "drivers/video/Kconfig" |
| |
| source "sound/Kconfig" |
| |
| source "drivers/hid/Kconfig" |
| |
| source "drivers/usb/Kconfig" |
| |
| source "drivers/mmc/Kconfig" |
| |
| source "drivers/leds/Kconfig" |
| |
| source "drivers/rtc/Kconfig" |
| |
| source "drivers/dma/Kconfig" |
| |
| source "drivers/dca/Kconfig" |
| |
| source "drivers/uio/Kconfig" |
| |
| endmenu |
| |
| source "fs/Kconfig" |
| |
| source "arch/arm/Kconfig.debug" |
| |
| source "security/Kconfig" |
| |
| source "crypto/Kconfig" |
| |
| source "lib/Kconfig" |