705 lines
17 KiB
Plaintext
705 lines
17 KiB
Plaintext
# 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 PPC_MERGE
|
|
def_bool y
|
|
|
|
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 ARCH_SETS_UP_PER_CPU_AREA
|
|
def_bool PPC64
|
|
|
|
config IRQ_PER_CPU
|
|
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 ARCH_NO_VIRT_TO_BUS
|
|
def_bool PPC64
|
|
|
|
config PPC
|
|
bool
|
|
default y
|
|
|
|
config EARLY_PRINTK
|
|
bool
|
|
default y
|
|
|
|
config COMPAT
|
|
bool
|
|
default y if PPC64
|
|
|
|
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 PPC64_SWSUSP
|
|
bool
|
|
depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL))
|
|
default y
|
|
|
|
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 PPC64 # not supported on 32 bits yet
|
|
default n
|
|
|
|
source "init/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"
|
|
|
|
# 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
|
|
depends on PPC64
|
|
default "9" if PPC_64K_PAGES
|
|
default "13"
|
|
|
|
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 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 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 (EXPERIMENTAL)"
|
|
depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
|
|
help
|
|
Build a kernel suitable for use as a kdump capture kernel.
|
|
The kernel will be linked at a different address than normal, and
|
|
so can only be used for Kdump.
|
|
|
|
Don't change this unless you know what you are doing.
|
|
|
|
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 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.
|
|
|
|
if !44x || BROKEN
|
|
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.
|
|
|
|
config WANT_DEVICE_TREE
|
|
bool
|
|
default n
|
|
|
|
config DEVICE_TREE
|
|
string "Static device tree source file"
|
|
depends on WANT_DEVICE_TREE
|
|
help
|
|
This specifies the device tree source (.dts) file to be
|
|
compiled and included when building the bootwrapper. If a
|
|
relative filename is given, then it will be relative to
|
|
arch/powerpc/boot/dts. If you are not using the bootwrapper,
|
|
or do not need to build a dts into the bootwrapper, this
|
|
field is ignored.
|
|
|
|
For example, this is required when building a cuImage target
|
|
for an older U-Boot, which cannot pass a device tree itself.
|
|
Such a kernel will not work with a newer U-Boot that tries to
|
|
pass a device tree (unless you tell it not to). If your U-Boot
|
|
does not mention a device tree in "help bootm", then use the
|
|
cuImage target and specify a device tree here. Otherwise, use
|
|
the uImage target and leave this field blank.
|
|
|
|
endmenu
|
|
|
|
config ISA_DMA_API
|
|
bool
|
|
default y
|
|
|
|
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
|
|
|
|
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
|
|
config MCA
|
|
bool
|
|
|
|
config PCI
|
|
bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
|
|
|| PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
|
|
|| PPC_PS3
|
|
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"
|
|
|
|
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 HIGHMEM_START_BOOL
|
|
bool "Set high memory pool address"
|
|
depends on ADVANCED_OPTIONS && HIGHMEM
|
|
help
|
|
This option allows you to set the base address of the kernel virtual
|
|
area used to map high memory pages. This can be useful in
|
|
optimizing the layout of kernel virtual memory.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config HIGHMEM_START
|
|
hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
|
|
default "0xfe000000"
|
|
|
|
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 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 map low memory (the kernel image will be linked at
|
|
this address). This can be useful in optimizing the virtual memory
|
|
layout of the system.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config KERNEL_START
|
|
hex "Virtual address of kernel base" if KERNEL_START_BOOL
|
|
default "0xc0000000"
|
|
|
|
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 BOOT_LOAD_BOOL
|
|
bool "Set the boot link/load address"
|
|
depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
|
|
help
|
|
This option allows you to set the initial load address of the zImage
|
|
or zImage.initrd file. This can be useful if you are on a board
|
|
which has a small amount of memory.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config BOOT_LOAD
|
|
hex "Link/load address for booting" if BOOT_LOAD_BOOL
|
|
default "0x00400000" if 40x || 8xx || 8260
|
|
default "0x01000000" if 44x
|
|
default "0x00800000"
|
|
|
|
config PIN_TLB
|
|
bool "Pinned Kernel TLBs (860 ONLY)"
|
|
depends on ADVANCED_OPTIONS && 8xx
|
|
endmenu
|
|
|
|
if PPC64
|
|
config KERNEL_START
|
|
hex
|
|
default "0xc000000000000000"
|
|
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 "kernel/Kconfig.instrumentation"
|
|
|
|
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
|
|
|
|
config PPC_LIB_RHEAP
|
|
bool
|
|
|