Mac Easy 2010 May

home *** CD-ROM | disk | FTP | other *** search

/ Mac Easy 2010 May / Mac Life Ubuntu.iso / casper / filesystem.squashfs / usr / src / linux-headers-2.6.28-15 / arch / powerpc / Kconfig < prev next >

Wrap

Text File | 2009-09-09 | 20.8 KB | 870 lines

# For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # mainmenu "Linux/PowerPC Kernel Configuration" source "arch/powerpc/platforms/Kconfig.cputype" config PPC32 bool default y if !PPC64 config 64BIT bool default y if PPC64 config WORD_SIZE int default 64 if PPC64 default 32 if !PPC64 config ARCH_PHYS_ADDR_T_64BIT def_bool PPC64 || PHYS_64BIT config MMU bool default y config GENERIC_CMOS_UPDATE def_bool y config GENERIC_TIME def_bool y config GENERIC_TIME_VSYSCALL def_bool y config GENERIC_CLOCKEVENTS def_bool y config GENERIC_HARDIRQS bool default y config HAVE_SETUP_PER_CPU_AREA def_bool PPC64 config IRQ_PER_CPU bool default y config STACKTRACE_SUPPORT bool default y config HAVE_LATENCYTOP_SUPPORT def_bool y config TRACE_IRQFLAGS_SUPPORT bool depends on PPC64 default y config LOCKDEP_SUPPORT bool default y config RWSEM_GENERIC_SPINLOCK bool config RWSEM_XCHGADD_ALGORITHM bool default y config GENERIC_LOCKBREAK bool default y depends on SMP && PREEMPT config ARCH_HAS_ILOG2_U32 bool default y config ARCH_HAS_ILOG2_U64 bool default y if 64BIT config GENERIC_HWEIGHT bool default y config GENERIC_CALIBRATE_DELAY bool default y config GENERIC_FIND_NEXT_BIT bool default y config GENERIC_GPIO bool help Generic GPIO API support config ARCH_NO_VIRT_TO_BUS def_bool PPC64 config PPC bool default y select HAVE_FUNCTION_TRACER select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_IDE select HAVE_IOREMAP_PROT select HAVE_EFFICIENT_UNALIGNED_ACCESS select HAVE_KPROBES select HAVE_ARCH_KGDB select HAVE_KRETPROBES select HAVE_ARCH_TRACEHOOK select HAVE_LMB select HAVE_DMA_ATTRS if PPC64 select USE_GENERIC_SMP_HELPERS if SMP select HAVE_OPROFILE select HAVE_SYSCALL_WRAPPERS if PPC64 config EARLY_PRINTK bool default y config COMPAT bool default y if PPC64 select COMPAT_BINFMT_ELF config SYSVIPC_COMPAT bool depends on COMPAT && SYSVIPC default y # All PPC32s use generic nvram driver through ppc_md config GENERIC_NVRAM bool default y if PPC32 config SCHED_NO_NO_OMIT_FRAME_POINTER bool default y config ARCH_MAY_HAVE_PC_FDC bool default !PPC_PSERIES || PCI config PPC_OF def_bool y config OF def_bool y config PPC_UDBG_16550 bool default n config GENERIC_TBSYNC bool default y if PPC32 && SMP default n config AUDIT_ARCH bool default y config GENERIC_BUG bool default y depends on BUG config SYS_SUPPORTS_APM_EMULATION default y if PMAC_APM_EMU bool config DEFAULT_UIMAGE bool help Used to allow a board to specify it wants a uImage built by default default n config REDBOOT bool config HIBERNATE_32 bool depends on (PPC_PMAC && !SMP) || BROKEN default y config HIBERNATE_64 bool depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL) default y config ARCH_HIBERNATION_POSSIBLE bool depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32) default y config ARCH_SUSPEND_POSSIBLE def_bool y depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx config PPC_DCR_NATIVE bool default n config PPC_DCR_MMIO bool default n config PPC_DCR bool depends on PPC_DCR_NATIVE || PPC_DCR_MMIO default y config PPC_OF_PLATFORM_PCI bool depends on PCI depends on PPC64 # not supported on 32 bits yet default n source "init/Kconfig" source "kernel/Kconfig.freezer" source "arch/powerpc/sysdev/Kconfig" source "arch/powerpc/platforms/Kconfig" menu "Kernel options" config HIGHMEM bool "High memory support" depends on PPC32 source kernel/time/Kconfig source kernel/Kconfig.hz source kernel/Kconfig.preempt source "fs/Kconfig.binfmt" config HUGETLB_PAGE_SIZE_VARIABLE bool depends on HUGETLB_PAGE default y config MATH_EMULATION bool "Math emulation" depends on 4xx || 8xx || E200 || PPC_MPC832x || E500 ---help--- Some PowerPC chips designed for embedded applications do not have a floating-point unit and therefore do not implement the floating-point instructions in the PowerPC instruction set. If you say Y here, the kernel will include code to emulate a floating-point unit, which will allow programs that use floating-point instructions to run. config 8XX_MINIMAL_FPEMU bool "Minimal math emulation for 8xx" depends on 8xx && !MATH_EMULATION help Older arch/ppc kernels still emulated a few floating point instructions such as load and store, even when full math emulation is disabled. Say "Y" here if you want to preserve this behavior. It is recommended that you build a soft-float userspace instead. config IOMMU_VMERGE bool "Enable IOMMU virtual merging" depends on PPC64 default y help Cause IO segments sent to a device for DMA to be merged virtually by the IOMMU when they happen to have been allocated contiguously. This doesn't add pressure to the IOMMU allocator. However, some drivers don't support getting large merged segments coming back from *_map_sg(). Most drivers don't have this problem; it is safe to say Y here. config IOMMU_HELPER def_bool PPC64 config HOTPLUG_CPU bool "Support for enabling/disabling CPUs" depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) ---help--- Say Y here to be able to disable and re-enable individual CPUs at runtime on SMP machines. Say N if you are unsure. config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y config ARCH_HAS_WALK_MEMORY def_bool y config ARCH_ENABLE_MEMORY_HOTREMOVE def_bool y config KEXEC bool "kexec system call (EXPERIMENTAL)" depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && 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. The name comes from the similarity to the exec system call. 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. As of this writing the exact hardware interface is strongly in flux, so no good recommendation can be made. config CRASH_DUMP bool "Build a kdump crash kernel" depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE help Build a kernel suitable for use as a kdump capture kernel. The same kernel binary can be used as production kernel and dump capture kernel. config PHYP_DUMP bool "Hypervisor-assisted dump (EXPERIMENTAL)" depends on PPC_PSERIES && EXPERIMENTAL help Hypervisor-assisted dump is meant to be a kdump replacement offering robustness and speed not possible without system hypervisor assistence. If unsure, say "N" config PPCBUG_NVRAM bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC default y if PPC_PREP config IRQ_ALL_CPUS bool "Distribute interrupts on all CPUs by default" depends on SMP && !MV64360 help This option gives the kernel permission to distribute IRQs across multiple CPUs. Saying N here will route all IRQs to the first CPU. Generally saying Y is safe, although some problems have been reported with SMP Power Macintoshes with this option enabled. config NUMA bool "NUMA support" depends on PPC64 default y if SMP && PPC_PSERIES config NODES_SHIFT int default "4" depends on NEED_MULTIPLE_NODES config ARCH_SELECT_MEMORY_MODEL def_bool y depends on PPC64 config ARCH_FLATMEM_ENABLE def_bool y depends on (PPC64 && !NUMA) || PPC32 config ARCH_SPARSEMEM_ENABLE def_bool y depends on PPC64 select SPARSEMEM_VMEMMAP_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y depends on (SMP && PPC_PSERIES) || PPC_PS3 config ARCH_POPULATES_NODE_MAP def_bool y source "mm/Kconfig" config ARCH_MEMORY_PROBE def_bool y depends on MEMORY_HOTPLUG # Some NUMA nodes have memory ranges that span # other nodes. Even though a pfn is valid and # between a node's start and end pfns, it may not # reside on that node. See memmap_init_zone() # for details. config NODES_SPAN_OTHER_NODES def_bool y depends on NEED_MULTIPLE_NODES config PPC_HAS_HASH_64K bool depends on PPC64 default n config PPC_64K_PAGES bool "64k page size" depends on PPC64 select PPC_HAS_HASH_64K help This option changes the kernel logical page size to 64k. On machines without processor support for 64k pages, the kernel will simulate them by loading each individual 4k page on demand transparently, while on hardware with such support, it will be used to map normal application pages. config FORCE_MAX_ZONEORDER int "Maximum zone order" range 9 64 if PPC_64K_PAGES default "9" if PPC_64K_PAGES range 13 64 if PPC64 && !PPC_64K_PAGES default "13" if PPC64 && !PPC_64K_PAGES range 11 64 default "11" help The kernel memory allocator divides physically contiguous memory blocks into "zones", where each zone is a power of two number of pages. This option selects the largest power of two that the kernel keeps in the memory allocator. If you need to allocate very large blocks of physically contiguous memory, then you may need to increase this value. This config option is actually maximum order plus one. For example, a value of 11 means that the largest free memory block is 2^10 pages. The page size is not necessarily 4KB. For example, on 64-bit systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep this in mind when choosing a value for this option. config PPC_SUBPAGE_PROT bool "Support setting protections for 4k subpages" depends on PPC_64K_PAGES help This option adds support for a system call to allow user programs to set access permissions (read/write, readonly, or no access) on the 4k subpages of each 64k page. config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" depends on PPC64 && SMP help SMT scheduler support improves the CPU scheduler's decision making when dealing with POWER5 cpus at a cost of slightly increased overhead in some places. If unsure say N here. config PROC_DEVICETREE bool "Support for device tree in /proc" depends on PROC_FS help This option adds a device-tree directory under /proc which contains an image of the device tree that the kernel copies from Open Firmware or other boot firmware. If unsure, say Y here. config CMDLINE_BOOL bool "Default bootloader kernel arguments" config CMDLINE string "Initial kernel command string" depends on CMDLINE_BOOL default "console=ttyS0,9600 console=tty0 root=/dev/sda2" help On some platforms, there is currently no way for the boot loader to pass arguments to the kernel. For these platforms, you can supply some command-line options at build time by entering them here. In most cases you will need to specify the root device here. config EXTRA_TARGETS string "Additional default image types" help List additional targets to be built by the bootwrapper here (separated by spaces). This is useful for targets that depend of device tree files in the .dts directory. Targets in this list will be build as part of the default build target, or when the user does a 'make zImage' or a 'make zImage.initrd'. If unsure, leave blank if !44x || BROKEN config ARCH_WANTS_FREEZER_CONTROL def_bool y depends on ADB_PMU source kernel/power/Kconfig endif config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" depends on PROC_FS default y help This kernel feature is useful for number crunching applications that may need to compute untrusted bytecode during their execution. By using pipes or other transports made available to the process as file descriptors supporting the read/write syscalls, it's possible to isolate those applications in their own address space using seccomp. Once seccomp is enabled via /proc/<pid>/seccomp, it cannot be disabled and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. If unsure, say Y. Only embedded should say N here. endmenu config ISA_DMA_API bool default !PPC_ISERIES || PCI menu "Bus options" config ISA bool "Support for ISA-bus hardware" depends on PPC_PREP || PPC_CHRP select PPC_I8259 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. If you have an Apple machine, say N here; if you have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If you have an embedded board, consult your board documentation. config ZONE_DMA bool default y config GENERIC_ISA_DMA bool depends on PPC64 || POWER4 || 6xx && !CPM2 default y config PPC_INDIRECT_PCI bool depends on PCI default y if 40x || 44x default n config EISA bool config SBUS bool config FSL_SOC bool config FSL_PCI bool select PPC_INDIRECT_PCI config 4xx_SOC bool config FSL_LBC bool help Freescale Localbus support config FSL_GTM bool depends on PPC_83xx || QUICC_ENGINE || CPM2 help Freescale General-purpose Timers support # Yes MCA RS/6000s exist but Linux-PPC does not currently support any config MCA bool # Platforms that what PCI turned unconditionally just do select PCI # in their config node. Platforms that want to choose at config # time should select PPC_PCI_CHOICE config PPC_PCI_CHOICE bool config PCI bool "PCI support" if PPC_PCI_CHOICE default y if !40x && !CPM2 && !8xx && !PPC_83xx \ && !PPC_85xx && !PPC_86xx default PCI_PERMEDIA if !4xx && !CPM2 && !8xx default PCI_QSPAN if !4xx && !CPM2 && 8xx select ARCH_SUPPORTS_MSI help Find out whether your system includes a PCI bus. PCI is the name of a bus system, i.e. the way the CPU talks to the other stuff inside your box. If you say Y here, the kernel will include drivers and infrastructure code to support PCI bus devices. config PCI_DOMAINS def_bool PCI config PCI_SYSCALL def_bool PCI config PCI_QSPAN bool "QSpan PCI" depends on !4xx && !CPM2 && 8xx select PPC_I8259 help Say Y here if you have a system based on a Motorola 8xx-series embedded processor with a QSPAN PCI interface, otherwise say N. config PCI_8260 bool depends on PCI && 8260 select PPC_INDIRECT_PCI default y config 8260_PCI9 bool "Enable workaround for MPC826x erratum PCI 9" depends on PCI_8260 && !8272 default y choice prompt "IDMA channel for PCI 9 workaround" depends on 8260_PCI9 config 8260_PCI9_IDMA1 bool "IDMA1" config 8260_PCI9_IDMA2 bool "IDMA2" config 8260_PCI9_IDMA3 bool "IDMA3" config 8260_PCI9_IDMA4 bool "IDMA4" endchoice source "drivers/pci/pcie/Kconfig" source "drivers/pci/Kconfig" source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" config HAS_RAPIDIO bool default n config RAPIDIO bool "RapidIO support" depends on HAS_RAPIDIO help If you say Y here, the kernel will include drivers and infrastructure code to support RapidIO interconnect devices. source "drivers/rapidio/Kconfig" endmenu menu "Advanced setup" depends on PPC32 config ADVANCED_OPTIONS bool "Prompt for advanced kernel configuration options" help This option will enable prompting for a variety of advanced kernel configuration options. These options can cause the kernel to not work if they are set incorrectly, but can be used to optimize certain aspects of kernel memory management. Unless you know what you are doing, say N here. comment "Default settings for advanced configuration options are used" depends on !ADVANCED_OPTIONS config LOWMEM_SIZE_BOOL bool "Set maximum low memory" depends on ADVANCED_OPTIONS help This option allows you to set the maximum amount of memory which will be used as "low memory", that is, memory which the kernel can access directly, without having to set up a kernel virtual mapping. This can be useful in optimizing the layout of kernel virtual memory. Say N here unless you know what you are doing. config LOWMEM_SIZE hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL default "0x30000000" config RELOCATABLE bool "Build a relocatable kernel (EXPERIMENTAL)" depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE help This builds a kernel image that is capable of running at the location the kernel is loaded at (some alignment restrictions may exist). One use is for the kexec on panic case where the recovery kernel must live at a different physical address than the primary kernel. Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address it has been loaded at and the compile time physical addresses CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START setting can still be useful to bootwrappers that need to know the load location of the kernel (eg. u-boot/mkimage). config PAGE_OFFSET_BOOL bool "Set custom page offset address" depends on ADVANCED_OPTIONS help This option allows you to set the kernel virtual address at which the kernel will map low memory. This can be useful in optimizing the virtual memory layout of the system. Say N here unless you know what you are doing. config PAGE_OFFSET hex "Virtual address of memory base" if PAGE_OFFSET_BOOL default "0xc0000000" config KERNEL_START_BOOL bool "Set custom kernel base address" depends on ADVANCED_OPTIONS help This option allows you to set the kernel virtual address at which the kernel will be loaded. Normally this should match PAGE_OFFSET however there are times (like kdump) that one might not want them to be the same. Say N here unless you know what you are doing. config KERNEL_START hex "Virtual address of kernel base" if KERNEL_START_BOOL default PAGE_OFFSET if PAGE_OFFSET_BOOL default "0xc2000000" if CRASH_DUMP default "0xc0000000" config PHYSICAL_START_BOOL bool "Set physical address where the kernel is loaded" depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE help This gives the physical address where the kernel is loaded. Say N here unless you know what you are doing. config PHYSICAL_START hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL default "0x02000000" if PPC_STD_MMU && CRASH_DUMP default "0x00000000" config PHYSICAL_ALIGN hex default "0x10000000" if FSL_BOOKE help This value puts the alignment restrictions on physical address where kernel is loaded and run from. Kernel is compiled for an address which meets above alignment restriction. config TASK_SIZE_BOOL bool "Set custom user task size" depends on ADVANCED_OPTIONS help This option allows you to set the amount of virtual address space allocated to user tasks. This can be useful in optimizing the virtual memory layout of the system. Say N here unless you know what you are doing. config TASK_SIZE hex "Size of user task space" if TASK_SIZE_BOOL default "0x80000000" if PPC_PREP || PPC_8xx default "0xc0000000" config CONSISTENT_START_BOOL bool "Set custom consistent memory pool address" depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE help This option allows you to set the base virtual address of the consistent memory pool. This pool of virtual memory is used to make consistent memory allocations. config CONSISTENT_START hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx) default "0xff100000" if NOT_COHERENT_CACHE config CONSISTENT_SIZE_BOOL bool "Set custom consistent memory pool size" depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE help This option allows you to set the size of the consistent memory pool. This pool of virtual memory is used to make consistent memory allocations. config CONSISTENT_SIZE hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL default "0x00200000" if NOT_COHERENT_CACHE config PIN_TLB bool "Pinned Kernel TLBs (860 ONLY)" depends on ADVANCED_OPTIONS && 8xx endmenu if PPC64 config RELOCATABLE bool "Build a relocatable kernel" help This builds a kernel image that is capable of running anywhere in the RMA (real memory area) at any 16k-aligned base address. The kernel is linked as a position-independent executable (PIE) and contains dynamic relocations which are processed early in the bootup process. One use is for the kexec on panic case where the recovery kernel must live at a different physical address than the primary kernel. config PAGE_OFFSET hex default "0xc000000000000000" config KERNEL_START hex default "0xc000000000000000" config PHYSICAL_START hex default "0x00000000" endif source "net/Kconfig" source "drivers/Kconfig" source "fs/Kconfig" # XXX source "arch/ppc/8xx_io/Kconfig" # XXX source "arch/ppc/8260_io/Kconfig" source "arch/powerpc/sysdev/qe_lib/Kconfig" source "lib/Kconfig" source "arch/powerpc/Kconfig.debug" source "security/Kconfig" config KEYS_COMPAT bool depends on COMPAT && KEYS default y source "crypto/Kconfig" config PPC_CLOCK bool default n select HAVE_CLK config PPC_LIB_RHEAP bool source "arch/powerpc/kvm/Kconfig"