# # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # config MMU bool default y config UID16 bool config RWSEM_GENERIC_SPINLOCK bool config RWSEM_XCHGADD_ALGORITHM bool default y config GENERIC_ISA_DMA bool default y config HAVE_DEC_LOCK bool default y config EARLY_PRINTK bool default y config COMPAT bool default y config FRAME_POINTER 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" menu "Platform support" choice prompt "Platform Type" default PPC_PSERIES config PPC_ISERIES bool "iSeries" config PPC_PSERIES bool "pSeries" endchoice config PPC bool default y config PPC64 bool default y config HUGETLB_PAGE bool "Huge TLB Page Support" help This enables support for huge pages. User space applications can make use of this support with the sys_alloc_hugepages and sys_free_hugepages system calls. If your applications are huge page aware and your processor supports this (only POWER4, then say Y here. Otherwise, say N. 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 IRQ_ALL_CPUS bool "Distribute interrupts on all CPUs by default" depends on SMP && PPC_PSERIES help This option gives the kernel permission to distribute IRQs across multiple CPUs. Saying N here will route all IRQs to the first CPU. config NR_CPUS int "Maximum number of CPUs (2-128)" depends on SMP default "32" config HMT bool "Hardware multithreading" depends on SMP && PPC_PSERIES config DISCONTIGMEM bool "Discontiguous Memory Support" depends on SMP && PPC_PSERIES config NUMA bool "NUMA support" depends on DISCONTIGMEM config PREEMPT bool 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. Unfortunately the kernel code has some race conditions if both CONFIG_SMP and CONFIG_PREEMPT are enabled, so this option is currently disabled if you are building an SMP kernel. Say Y here if you are building a kernel for a desktop, embedded or real-time system. Say N if you are unsure. config MSCHUNKS bool depends on PPC_ISERIES default y config RTAS_FLASH tristate "Firmware flash interface" depends on !PPC_ISERIES config SCANLOG tristate "Scanlog dump interface" depends on !PPC_ISERIES config PPC_RTAS bool "Proc interface to RTAS" depends on !PPC_ISERIES endmenu menu "General setup" 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 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 "fs/Kconfig.binfmt" source "drivers/pci/Kconfig" config HOTPLUG bool "Support for hot-pluggable devices" ---help--- Say Y here if you want to plug devices into your computer while the system is running, and be able to use them quickly. In many cases, the devices can likewise be unplugged at any time too. One well known example of this is PCMCIA- or PC-cards, credit-card size devices such as network cards, modems or hard drives which are plugged into slots found on all modern laptop computers. Another example, used on modern desktops as well as laptops, is USB. Enable HOTPLUG and KMOD, and build a modular kernel. Get agent software (at <http://linux-hotplug.sourceforge.net/>) and install it. Then your kernel will automatically call out to a user mode "policy agent" (/sbin/hotplug) to load modules and set up software needed to use devices as you hotplug them. source "drivers/pcmcia/Kconfig" source "drivers/pci/hotplug/Kconfig" config PROC_DEVICETREE bool "Support for Open Firmware device tree in /proc" depends on !PPC_ISERIES 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 source "drivers/base/Kconfig" source "drivers/mtd/Kconfig" source "drivers/parport/Kconfig" source "drivers/pnp/Kconfig" source "drivers/block/Kconfig" source "drivers/ide/Kconfig" source "drivers/scsi/Kconfig" source "drivers/md/Kconfig" source "drivers/message/fusion/Kconfig" source "drivers/ieee1394/Kconfig" source "drivers/message/i2o/Kconfig" source "net/Kconfig" source "net/ax25/Kconfig" source "net/irda/Kconfig" source "drivers/isdn/Kconfig" source "drivers/telephony/Kconfig" # # input before char - char/joystick depends on it. As does USB. # source "drivers/input/Kconfig" source "drivers/char/Kconfig" source "drivers/media/Kconfig" source "fs/Kconfig" source "drivers/video/Kconfig" source "sound/Kconfig" source "drivers/usb/Kconfig" source "net/bluetooth/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 VIODASD_IDE bool "iSeries Virtual disk IDE emulation" depends on VIODASD help This causes the iSeries virtual disks to look like IDE disks. If you have programs or utilities that only support certain kinds of disks, this option will cause iSeries virtual disks to pretend to be IDE disks, which may satisfy the program. 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 VIOCD_AZTECH bool "iSeries Virtual CD Aztech emulation" depends on VIOCD 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. config VETH tristate "iSeries Virtual Ethernet driver support" endmenu config VIOPATH bool depends on PPC_ISERIES default y source "arch/ppc64/oprofile/Kconfig" menu "Kernel hacking" config DEBUG_KERNEL bool "Kernel debugging" help Say Y here if you are developing drivers or trying to debug and identify kernel problems. config DEBUG_SLAB bool "Debug memory allocations" depends on DEBUG_KERNEL help Say Y here to have the kernel do limited verification on memory allocation as well as poisoning memory on free to catch use of freed memory. config MAGIC_SYSRQ bool "Magic SysRq key" depends on DEBUG_KERNEL help If you say Y here, you will have some control over the system even if the system crashes for example during kernel debugging (e.g., you will be able to flush the buffer cache to disk, reboot the system immediately or dump some status information). This is accomplished by pressing various keys while holding SysRq (Alt+PrintScreen). It also works on a serial console (on PC hardware at least), if you send a BREAK and then within 5 seconds a command keypress. The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y unless you really know what this hack does. config XMON bool "Include xmon kernel debugger" depends on DEBUG_KERNEL help Include in-kernel hooks for the xmon kernel monitor/debugger. Unless you are intending to debug the kernel, say N here. config XMON_DEFAULT bool "Enable xmon by default" depends on XMON config PPCDBG bool "Include PPCDBG realtime debugging" depends on DEBUG_KERNEL config DEBUG_INFO bool "Compile the kernel with debug info" depends on DEBUG_KERNEL help If you say Y here the resulting kernel image will include debugging info resulting in a larger kernel image. Say Y here only if you plan to use gdb to debug the kernel. If you don't debug the kernel, you can say N. endmenu source "security/Kconfig" source "crypto/Kconfig" source "lib/Kconfig"