# # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # config 64BIT def_bool y config MMU bool default y config PPC_STD_MMU def_bool y config UID16 bool config RWSEM_GENERIC_SPINLOCK bool config RWSEM_XCHGADD_ALGORITHM bool default y config GENERIC_CALIBRATE_DELAY bool default y config GENERIC_ISA_DMA bool default y config EARLY_PRINTK bool default y config COMPAT bool default y config SCHED_NO_NO_OMIT_FRAME_POINTER bool default y config ARCH_MAY_HAVE_PC_FDC bool default y # We optimistically allocate largepages from the VM, so make the limit # large enough (16MB). This badly named config option is actually # max order + 1 config FORCE_MAX_ZONEORDER int default "13" source "init/Kconfig" config SYSVIPC_COMPAT bool depends on COMPAT && SYSVIPC default y menu "Platform support" choice prompt "Platform Type" default PPC_MULTIPLATFORM config PPC_ISERIES bool "IBM Legacy iSeries" config PPC_MULTIPLATFORM bool "Generic" endchoice config PPC_PSERIES depends on PPC_MULTIPLATFORM bool " IBM pSeries & new iSeries" default y config PPC_BPA bool " Broadband Processor Architecture" depends on PPC_MULTIPLATFORM config PPC_PMAC depends on PPC_MULTIPLATFORM bool " Apple G5 based machines" default y select U3_DART config PPC_MAPLE depends on PPC_MULTIPLATFORM bool " Maple 970FX Evaluation Board" select U3_DART select MPIC_BROKEN_U3 default n help This option enables support for the Maple 970FX Evaluation Board. For more informations, refer to config PPC bool default y config PPC64 bool default y config PPC_OF depends on PPC_MULTIPLATFORM bool default y config XICS depends on PPC_PSERIES bool default y config MPIC depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE bool default y config PPC_I8259 depends on PPC_PSERIES bool default y config BPA_IIC depends on PPC_BPA bool default y # VMX is pSeries only for now until somebody writes the iSeries # exception vectors for it config ALTIVEC bool "Support for VMX (Altivec) vector unit" depends on PPC_MULTIPLATFORM default y config PPC_SPLPAR depends on PPC_PSERIES bool "Support for shared-processor logical partitions" default n help Enabling this option will make the kernel run more efficiently on logically-partitioned pSeries systems which use shared processors, that is, which share physical processors between two or more partitions. config KEXEC bool "kexec system call (EXPERIMENTAL)" depends on 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 indepedent of the system firmware. And like a reboot you can start any kernel with it, not just Linux. The name comes from the similiarity 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 IBMVIO depends on PPC_PSERIES || PPC_ISERIES bool default y config U3_DART bool depends on PPC_MULTIPLATFORM default n config MPIC_BROKEN_U3 bool depends on PPC_MAPLE default y config PPC_PMAC64 bool depends on PPC_PMAC default y config BOOTX_TEXT bool "Support for early boot text console" depends PPC_OF help Say Y here to see progress messages from the boot firmware in text mode. Requires an Open Firmware compatible video card. config POWER4 def_bool y config PPC_FPU def_bool y config POWER4_ONLY bool "Optimize for POWER4" default n ---help--- Cause the compiler to optimize for POWER4 processors. The resulting binary will not work on POWER3 or RS64 processors when compiled with binutils 2.15 or later. config IOMMU_VMERGE bool "Enable IOMMU virtual merging (EXPERIMENTAL)" depends on EXPERIMENTAL default n 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(). Say Y if you know the drivers you are using are properly handling this case. config SMP bool "Symmetric multi-processing support" ---help--- This enables support for systems with more than one CPU. If you have a system with only one CPU, 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 single-processor machines. On a single-processor machine, the kernel will run faster if you say N here. If you don't know what to do here, say Y. config NR_CPUS int "Maximum number of CPUs (2-128)" range 2 128 depends on SMP default "32" config HMT bool "Hardware multithreading" depends on SMP && PPC_PSERIES && BROKEN help This option enables hardware multithreading on RS64 cpus. pSeries systems p620 and p660 have such a cpu type. config NUMA bool "NUMA support" default y if SMP && PPC_PSERIES config ARCH_SELECT_MEMORY_MODEL def_bool y config ARCH_FLATMEM_ENABLE def_bool y depends on !NUMA config ARCH_DISCONTIGMEM_ENABLE def_bool y depends on SMP && PPC_PSERIES config ARCH_DISCONTIGMEM_DEFAULT def_bool y depends on ARCH_DISCONTIGMEM_ENABLE config ARCH_SPARSEMEM_ENABLE def_bool y depends on ARCH_DISCONTIGMEM_ENABLE source "mm/Kconfig" config HAVE_ARCH_EARLY_PFN_TO_NID def_bool y depends on NEED_MULTIPLE_NODES # 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. # # This is a relatively temporary hack that should # be able to go away when sparsemem is fully in # place config NODES_SPAN_OTHER_NODES def_bool y depends on NEED_MULTIPLE_NODES config SCHED_SMT bool "SMT (Hyperthreading) scheduler support" depends on SMP default off 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. source "kernel/Kconfig.preempt" source kernel/Kconfig.hz config EEH bool "PCI Extended Error Handling (EEH)" if EMBEDDED depends on PPC_PSERIES default y if !EMBEDDED # # Use the generic interrupt handling code in kernel/irq/: # config GENERIC_HARDIRQS bool default y config PPC_RTAS bool depends on PPC_PSERIES || PPC_BPA default y config RTAS_ERROR_LOGGING bool depends on PPC_RTAS default y config RTAS_PROC bool "Proc interface to RTAS" depends on PPC_RTAS default y config RTAS_FLASH tristate "Firmware flash interface" depends on RTAS_PROC config SCANLOG tristate "Scanlog dump interface" depends on RTAS_PROC && PPC_PSERIES config LPARCFG tristate "LPAR Configuration Data" depends on PPC_PSERIES || PPC_ISERIES help Provide system capacity information via human readable = pairs through a /proc/ppc64/lparcfg interface. 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//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. source "fs/Kconfig.binfmt" config HOTPLUG_CPU bool "Support for hot-pluggable CPUs" depends on SMP && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC) select HOTPLUG ---help--- Say Y here to be able to turn CPUs off and on. Say N if you are unsure. config PROC_DEVICETREE bool "Support for Open Firmware device tree in /proc" 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. If unsure, say Y here. config CMDLINE_BOOL bool "Default bootloader kernel arguments" depends on !PPC_ISERIES 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. endmenu config ISA_DMA_API bool default y menu "Bus Options" 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. 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 SBUS bool config MCA bool config EISA bool config PCI bool "support for PCI devices" if (EMBEDDED && PPC_ISERIES) default y 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 bool default PCI source "drivers/pci/Kconfig" source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" endmenu source "net/Kconfig" source "drivers/Kconfig" source "fs/Kconfig" menu "iSeries device drivers" depends on PPC_ISERIES config VIOCONS tristate "iSeries Virtual Console Support" config VIODASD tristate "iSeries Virtual I/O disk support" help If you are running on an iSeries system and you want to use virtual disks created and managed by OS/400, say Y. config VIOCD tristate "iSeries Virtual I/O CD support" help If you are running Linux on an IBM iSeries system and you want to read a CD drive owned by OS/400, say Y here. config VIOTAPE tristate "iSeries Virtual Tape Support" help If you are running Linux on an iSeries system and you want Linux to read and/or write a tape drive owned by OS/400, say Y here. endmenu config VIOPATH bool depends on VIOCONS || VIODASD || VIOCD || VIOTAPE || VETH default y source "arch/powerpc/oprofile/Kconfig" source "arch/ppc64/Kconfig.debug" source "security/Kconfig" config KEYS_COMPAT bool depends on COMPAT && KEYS default y source "crypto/Kconfig" source "lib/Kconfig"