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#
# Realtek Semiconductor Corp.
#
# RLX Linux Kernel Configuration
#
# Tony Wu (tonywu@realtek.com)
# Dec. 07, 2008
#
source "arch/rlx/config.in"
config MIPS
bool
default y
select EMBEDDED
config TRAD_SIGNALS
bool
default y
config EMBEDDED
bool
default y
#
# 32BIT
#
config 32BIT
bool
default y
config BOOT_32BIT
bool
default y
config BINFMT_ELF32
bool
default y
config BINFMT_ELF
bool
default y
config SYS_SUPPORTS_32BIT_KERNEL
bool
default y
config CPU_SUPPORTS_32BIT_KERNEL
bool
default y
#
# CPU
#
config CPU_RLX4180
bool
default y if ARCH_CPU_RLX4180
config CPU_RLX4181
bool
default y if ARCH_CPU_RLX4181
config CPU_RLX5181
bool
default y if ARCH_CPU_RLX5181
config CPU_RLX5280
bool
default y if ARCH_CPU_RLX5280
config CPU_RLX4281
bool
default y if ARCH_CPU_RLX4281
config CPU_RLX5281
bool
default y if ARCH_CPU_RLX5281
config CPU_HAS_RADIAX
bool
default y if ARCH_CPU_RADIAX
config CPU_HAS_SLEEP
bool
default y if ARCH_CPU_SLEEP
config CPU_HAS_ULS
bool
default y if ARCH_CPU_ULS
config CPU_HAS_LLSC
bool
default y if ARCH_CPU_LLSC
config CPU_HAS_SYNC
bool
default y if ARCH_CPU_SYNC
config MMU
bool
default y
config PAGE_SIZE_4KB
bool
default y
#
# CPU may reorder R->R, R->W, W->R, W->W
# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
#
config WEAK_ORDERING
bool
#
# CPU may reorder reads and writes beyond LL/SC
# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
#
config WEAK_REORDERING_BEYOND_LLSC
bool
#
# CACHE
#
config CPU_HAS_WBC
bool
default y if ARCH_CACHE_WBC
config CPU_HAS_L2C
bool
default y if ARCH_CACHE_L2C
#
## WRITE BUFFER
##
config CPU_HAS_WB
bool
default n
#
# DMA
#
config DMA_NONCOHERENT
bool
default y
select DMA_NEED_PCI_MAP_STATE
config DMA_NEED_PCI_MAP_STATE
bool
config ZONE_DMA
bool
#
# ENDIAN
#
config CPU_BIG_ENDIAN
bool
default y if ARCH_CPU_EB
config CPU_LITTLE_ENDIAN
bool
default y if ARCH_CPU_EL
#
# IRQ
#
config IRQ_CPU
bool
default y if ARCH_IRQ_CPU
config IRQ_VEC
bool
default y if ARCH_IRQ_VEC
config GENERIC_HARDIRQS
bool
default y
config GENERIC_IRQ_PROBE
bool
default n
config GENERIC_HARDIRQS_NO__DO_IRQ
def_bool y
#
# BUS
#
config HW_HAS_PCI
bool
default y if ARCH_BUS_PCI
config ARCH_SUPPORTS_MSI
bool
default y if ARCH_BUS_PCI_MSI
config HW_HAS_USB
bool
default y if ARCH_BUS_USB
#
# end of RLX configuration
#
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config ARCH_SUPPORTS_OPROFILE
bool
default y if !MIPS_MT_SMTC
config GENERIC_FIND_NEXT_BIT
bool
default y
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default y
config GENERIC_CLOCKEVENTS
bool
default y
config GENERIC_TIME
bool
default y
config GENERIC_CMOS_UPDATE
bool
default n
config SCHED_OMIT_FRAME_POINTER
bool
default y
#
# Select some configuration options automatically based on user selections.
#
config EARLY_PRINTK
bool "Early printk" if EMBEDDED && DEBUG_KERNEL
depends on SYS_HAS_EARLY_PRINTK
default y
help
This option enables special console drivers which allow the kernel
to print messages very early in the bootup process.
This is useful for kernel debugging when your machine crashes very
early before the console code is initialized. For normal operation,
it is not recommended because it looks ugly on some machines and
doesn't cooperate with an X server. You should normally say N here,
unless you want to debug such a crash.
config SYS_HAS_EARLY_PRINTK
bool
config NO_IOPORT
def_bool n
config GENERIC_ISA_DMA
bool
select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
config GENERIC_ISA_DMA_SUPPORT_BROKEN
bool
select GENERIC_ISA_DMA
config GENERIC_GPIO
bool
config SWAP_IO_SPACE
bool
#
# Set to y for ptrace access to watch registers.
#
config HARDWARE_WATCHPOINTS
bool
default y if CPU_MIPSR1 || CPU_MIPSR2
menu "Kernel type"
#
# - Highmem only makes sense for the 32-bit kernel.
# - The current highmem code will only work properly on physically indexed
# caches such as R3000, SB1, R7000 or those that look like they're virtually
# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
# moment we protect the user and offer the highmem option only on machines
# where it's known to be safe. This will not offer highmem on a few systems
# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
# indexed CPUs but we're playing safe.
# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
# know they might have memory configurations that could make use of highmem
# support.
#
config HIGHMEM
bool "High Memory Support"
depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
config CPU_SUPPORTS_HIGHMEM
bool
config SYS_SUPPORTS_HIGHMEM
bool
config ARCH_FLATMEM_ENABLE
def_bool y
config ARCH_DISCONTIGMEM_ENABLE
def_bool n
config ARCH_POPULATES_NODE_MAP
def_bool y
config NODES_SHIFT
int
default "6"
depends on NEED_MULTIPLE_NODES
source "mm/Kconfig"
config SMP
def_bool n
source "kernel/time/Kconfig"
#
# Timer Interrupt Frequency Configuration
#
choice
prompt "Timer frequency"
default HZ_250
help
Allows the configuration of the timer frequency.
config HZ_48
bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
config HZ_100
bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
config HZ_128
bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
config HZ_250
bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
config HZ_256
bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
config HZ_1000
bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
config HZ_1024
bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
endchoice
config SYS_SUPPORTS_48HZ
bool
config SYS_SUPPORTS_100HZ
bool
config SYS_SUPPORTS_128HZ
bool
config SYS_SUPPORTS_250HZ
bool
config SYS_SUPPORTS_256HZ
bool
config SYS_SUPPORTS_1000HZ
bool
config SYS_SUPPORTS_1024HZ
bool
config SYS_SUPPORTS_ARBIT_HZ
bool
default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
!SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
!SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
!SYS_SUPPORTS_1024HZ
config HZ
int
default 48 if HZ_48
default 100 if HZ_100
default 128 if HZ_128
default 250 if HZ_250
default 256 if HZ_256
default 1000 if HZ_1000
default 1024 if HZ_1024
source "kernel/Kconfig.preempt"
config KEXEC
bool "Kexec system call (EXPERIMENTAL)"
depends on 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 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 LOCKDEP_SUPPORT
bool
default y
config STACKTRACE_SUPPORT
bool
default n
source "init/Kconfig"
config PROBE_INITRD_HEADER
bool "Probe initrd header created by addinitrd"
depends on BLK_DEV_INITRD
help
Probe initrd header at the last page of kernel image.
Say Y here if you are using arch/rlx/boot/addinitrd.c to
add initrd or initramfs image to the kernel image.
Otherwise, say N.
source "kernel/Kconfig.freezer"
menu "Bus options (PCI/USB)"
config PCI
bool "Support for PCI controller"
depends on HW_HAS_PCI
select PCI_DOMAINS
help
Find out whether you have a PCI motherboard. PCI is the name of a
bus system, i.e. the way the CPU talks to the other stuff inside
your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
say Y, otherwise N.
config PCI_DOMAINS
bool
source "drivers/pci/Kconfig"
source "drivers/pci/hotplug/Kconfig"
source "drivers/pcmcia/Kconfig"
endmenu
menu "Power management options"
config ARCH_SUSPEND_POSSIBLE
def_bool y
depends on !SMP
source "kernel/power/Kconfig"
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
source "arch/rlx/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
|