#
# 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 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 HAVE_DEC_LOCK
bool
default y
config EARLY_PRINTK
bool
default y
config COMPAT
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_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 <http://www.970eval.com>
config PPC
bool
default y
config PPC64
bool
default y
config PPC_OF
depends on PPC_MULTIPLATFORM
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 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_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 DISCONTIGMEM
bool "Discontiguous Memory Support"
depends on SMP && PPC_PSERIES
config NUMA
bool "NUMA support"
depends on DISCONTIGMEM
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.
config PREEMPT
bool "Preemptible Kernel"
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.
Say Y here if you are building a kernel for a desktop, embedded
or real-time system. Say N if you are unsure.
config PREEMPT_BKL
bool "Preempt The Big Kernel Lock"
depends on PREEMPT
default y
help
This option reduces the latency of the kernel by making the
big kernel lock preemptible.
Say Y here if you are building a kernel for a desktop system.
Say N if you are unsure.
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 MSCHUNKS
bool
depends on PPC_ISERIES
default y
config PPC_RTAS
bool
depends on PPC_PSERIES
default y
config RTAS_PROC
bool "Proc interface to RTAS"
depends on PPC_RTAS
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
<key word>=<value> 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/<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
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_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.
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/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/ppc64/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"
