TERES/SOFTWARE/A64-TERES/linux-a64/arch/arm64/Kconfig
Dimitar Gamishev f9b0e7a283 linux
2017-10-13 14:07:04 +03:00

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Executable File

config ARM64
def_bool y
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select ARCH_HAS_SG_CHAIN
select ARCH_HAS_OPP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_HAS_OPP
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
select ARCH_WANT_FRAME_POINTERS
select ARM_AMBA
select ARM_ARCH_TIMER
select ARM_GIC
select ARM_GIC_V3
select BUILDTIME_EXTABLE_SORT
select AUDIT_ARCH_COMPAT_GENERIC
select CLONE_BACKWARDS
select COMMON_CLK
select CPU_PM if (SUSPEND || CPU_IDLE)
select DCACHE_WORD_ACCESS
select GENERIC_ALLOCATOR
select GENERIC_CLOCKEVENTS
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
select GENERIC_IOMAP
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_SMP_IDLE_THREAD
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
select GENERIC_TIME_VSYSCALL
select HARDIRQS_SW_RESEND
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KGDB
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_C_RECORDMCOUNT
select HAVE_CC_STACKPROTECTOR
select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_ATTRS
select HAVE_DMA_CONTIGUOUS
select HAVE_DYNAMIC_FTRACE
select HAVE_EFFICIENT_UNALIGNED_ACCESS
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_GENERIC_DMA_COHERENT
select HAVE_GENERIC_HARDIRQS
select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_MEMBLOCK
select HAVE_PATA_PLATFORM
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
select HAVE_SYSCALL_TRACEPOINTS
select IRQ_DOMAIN
select MODULES_USE_ELF_RELA
select NO_BOOTMEM
select OF
select OF_EARLY_FLATTREE
select OF_RESERVED_MEM
select PERF_USE_VMALLOC
select POWER_RESET
select POWER_SUPPLY
select RTC_LIB
select SPARSE_IRQ
select SYSCTL_EXCEPTION_TRACE
select CLOCKSOURCE_VALIDATE_LAST_CYCLE
help
ARM 64-bit (AArch64) Linux support.
config 64BIT
def_bool y
config ARCH_PHYS_ADDR_T_64BIT
def_bool y
config MMU
def_bool y
config NO_IOPORT
def_bool y
config STACKTRACE_SUPPORT
def_bool y
config ILLEGAL_POINTER_VALUE
hex
default 0xdead000000000000
config LOCKDEP_SUPPORT
def_bool y
config TRACE_IRQFLAGS_SUPPORT
def_bool y
config RWSEM_XCHGADD_ALGORITHM
def_bool y
config GENERIC_HWEIGHT
def_bool y
config GENERIC_CSUM
def_bool y
config GENERIC_CALIBRATE_DELAY
def_bool y
config ZONE_DMA
def_bool y
config ARCH_DMA_ADDR_T_64BIT
def_bool y
config NEED_DMA_MAP_STATE
def_bool y
config NEED_SG_DMA_LENGTH
def_bool y
config SWIOTLB
def_bool y
config IOMMU_HELPER
def_bool SWIOTLB
config FIX_EARLYCON_MEM
def_bool y
config KERNEL_MODE_NEON
def_bool y
source "init/Kconfig"
source "kernel/Kconfig.freezer"
menu "Platform selection"
config ARCH_VEXPRESS
bool "ARMv8 software model (Versatile Express)"
select ARCH_REQUIRE_GPIOLIB
select COMMON_CLK_VERSATILE
select POWER_RESET_VEXPRESS
select VEXPRESS_CONFIG
help
This enables support for the ARMv8 software model (Versatile
Express).
config ARCH_XGENE
bool "AppliedMicro X-Gene SOC Family"
help
This enables support for AppliedMicro X-Gene SOC Family
config ARCH_SUNXI
bool "Allwinner SOC Family"
select PINCTRL
select SUNXI_TIMER
help
This enables support for Allwinner SUNXI SoC family
config ARCH_SUN50I
bool "ARMv8 based Allwinner SUN50I"
select ARCH_SUNXI
help
Thereis enables support for Allwinner SUNXI SoC family
config ARCH_SUN50IW1P1
bool "ARMv8 based Allwinner SUN50IW1P1"
select ARCH_SUN50I
help
Thereis enables support for Allwinner SUNXI SoC family
# ==========================================
# Select the board between FPGA and real IC
# ==========================================
choice
prompt "Allwinner development boards"
depends on ARCH_SUNXI
default FPGA_V4_PLATFORM
config FPGA_V4_PLATFORM
bool "FPGAv4 board"
help
Support for Allwinner's FPGAv4 board
config FPGA_V7_PLATFORM
bool "FPGAv7 board"
help
Support for Allwinner's FPGAv7 board
config EVB_PLATFORM
bool "EVB board"
help
Support for Allwinner's EVB board
endchoice
config SUNXI_SOC_NAME
string "The name of SUNXI SoC"
default ""
help
Used for /sysfs/.../sysinfo.
endmenu
menu "Bus support"
config ARM_AMBA
bool
endmenu
menu "Kernel Features"
config ARM64_64K_PAGES
bool "Enable 64KB pages support"
help
This feature enables 64KB pages support (4KB by default)
allowing only two levels of page tables and faster TLB
look-up. AArch32 emulation is not available when this feature
is enabled.
config CPU_BIG_ENDIAN
bool "Build big-endian kernel"
help
Say Y if you plan on running a kernel in big-endian mode.
config SMP
bool "Symmetric Multi-Processing"
select USE_GENERIC_SMP_HELPERS
help
This enables support for systems with more than one CPU. 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 many, but not all, 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 N.
config SCHED_MC
bool "Multi-core scheduler support"
depends on SMP
help
Multi-core scheduler support improves the CPU scheduler's decision
making when dealing with multi-core CPU chips at a cost of slightly
increased overhead in some places. If unsure say N here.
config CPU_OPS_SUNXI
bool "Use SUNXI cpu ops instead of psci"
depends on SMP && ARCH_SUN50I
help
Use sunxi cpu ops for SMP. If use psci say N here.
config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
help
Improves the CPU scheduler's decision making when dealing with
MultiThreading at a cost of slightly increased overhead in some
places. If unsure say N here.
config DISABLE_CPU_SCHED_DOMAIN_BALANCE
bool "(EXPERIMENTAL) Disable CPU level scheduler load-balancing"
help
Disables scheduler load-balancing at CPU sched domain level.
config SCHED_HMP
bool "(EXPERIMENTAL) Heterogenous multiprocessor scheduling"
depends on DISABLE_CPU_SCHED_DOMAIN_BALANCE && SCHED_MC && FAIR_GROUP_SCHED && !SCHED_AUTOGROUP
help
Experimental scheduler optimizations for heterogeneous platforms.
Attempts to introspectively select task affinity to optimize power
and performance. Basic support for multiple (>2) cpu types is in place,
but it has only been tested with two types of cpus.
There is currently no support for migration of task groups, hence
!SCHED_AUTOGROUP. Furthermore, normal load-balancing must be disabled
between cpus of different type (DISABLE_CPU_SCHED_DOMAIN_BALANCE).
config SCHED_HMP_PRIO_FILTER
bool "(EXPERIMENTAL) Filter HMP migrations by task priority"
depends on SCHED_HMP
help
Enables task priority based HMP migration filter. Any task with
a NICE value above the threshold will always be on low-power cpus
with less compute capacity.
config SCHED_HMP_PRIO_FILTER_VAL
int "NICE priority threshold"
default 5
depends on SCHED_HMP_PRIO_FILTER
config HMP_FAST_CPU_MASK
string "HMP scheduler fast CPU mask"
depends on SCHED_HMP
help
Leave empty to use device tree information.
Specify the cpuids of the fast CPUs in the system as a list string,
e.g. cpuid 0+1 should be specified as 0-1.
config HMP_SLOW_CPU_MASK
string "HMP scheduler slow CPU mask"
depends on SCHED_HMP
help
Leave empty to use device tree information.
Specify the cpuids of the slow CPUs in the system as a list string,
e.g. cpuid 0+1 should be specified as 0-1.
config HMP_VARIABLE_SCALE
bool "Allows changing the load tracking scale through sysfs"
depends on SCHED_HMP
help
When turned on, this option exports the thresholds and load average
period value for the load tracking patches through sysfs.
The values can be modified to change the rate of load accumulation
and the thresholds used for HMP migration.
The load_avg_period_ms is the time in ms to reach a load average of
0.5 for an idle task of 0 load average ratio that start a busy loop.
The up_threshold and down_threshold is the value to go to a faster
CPU or to go back to a slower cpu.
The {up,down}_threshold are devided by 1024 before being compared
to the load average.
For examples, with load_avg_period_ms = 128 and up_threshold = 512,
a running task with a load of 0 will be migrated to a bigger CPU after
128ms, because after 128ms its load_avg_ratio is 0.5 and the real
up_threshold is 0.5.
This patch has the same behavior as changing the Y of the load
average computation to
(1002/1024)^(LOAD_AVG_PERIOD/load_avg_period_ms)
but it remove intermadiate overflows in computation.
config HMP_FREQUENCY_INVARIANT_SCALE
bool "(EXPERIMENTAL) Frequency-Invariant Tracked Load for HMP"
depends on HMP_VARIABLE_SCALE && CPU_FREQ
help
Scales the current load contribution in line with the frequency
of the CPU that the task was executed on.
In this version, we use a simple linear scale derived from the
maximum frequency reported by CPUFreq.
Restricting tracked load to be scaled by the CPU's frequency
represents the consumption of possible compute capacity
(rather than consumption of actual instantaneous capacity as
normal) and allows the HMP migration's simple threshold
migration strategy to interact more predictably with CPUFreq's
asynchronous compute capacity changes.
config SCHED_HMP_LITTLE_PACKING
bool "Small task packing for HMP"
depends on SCHED_HMP
default n
help
Allows the HMP Scheduler to pack small tasks into CPUs in the
smallest HMP domain.
Controlled by two sysfs files in sys/kernel/hmp.
packing_enable: 1 to enable, 0 to disable packing. Default 1.
packing_limit: runqueue load ratio where a RQ is considered
to be full. Default is NICE_0_LOAD * 9/8.
config NR_CPUS
int "Maximum number of CPUs (2-32)"
range 2 32
depends on SMP
# These have to remain sorted largest to smallest
default "8"
config HOTPLUG_CPU
bool "Support for hot-pluggable CPUs"
depends on SMP
help
Say Y here to experiment with turning CPUs off and on. CPUs
can be controlled through /sys/devices/system/cpu.
config SWP_EMULATE
bool "Emulate SWP/SWPB instructions"
help
ARMv6 architecture deprecates use of the SWP/SWPB instructions. ARMv8
oblosetes the use of SWP/SWPB instructions. ARMv7 multiprocessing
extensions introduce the ability to disable these instructions,
triggering an undefined instruction exception when executed. Say Y
here to enable software emulation of these instructions for userspace
(not kernel) using LDREX/STREX. Also creates /proc/cpu/swp_emulation
for statistics.
In some older versions of glibc [<=2.8] SWP is used during futex
trylock() operations with the assumption that the code will not
be preempted. This invalid assumption may be more likely to fail
with SWP emulation enabled, leading to deadlock of the user
application.
NOTE: when accessing uncached shared regions, LDREX/STREX rely
on an external transaction monitoring block called a global
monitor to maintain update atomicity. If your system does not
implement a global monitor, this option can cause programs that
perform SWP operations to uncached memory to deadlock.
If unsure, say Y.
source kernel/Kconfig.preempt
config HZ
int
default 100
config ARCH_HAS_HOLES_MEMORYMODEL
def_bool y if SPARSEMEM
config ARCH_SPARSEMEM_ENABLE
def_bool y
select SPARSEMEM_VMEMMAP_ENABLE
config ARCH_SPARSEMEM_DEFAULT
def_bool ARCH_SPARSEMEM_ENABLE
config ARCH_SELECT_MEMORY_MODEL
def_bool ARCH_SPARSEMEM_ENABLE
config HAVE_ARCH_PFN_VALID
def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
config HW_PERF_EVENTS
bool "Enable hardware performance counter support for perf events"
depends on PERF_EVENTS
default y
help
Enable hardware performance counter support for perf events. If
disabled, perf events will use software events only.
config SYS_SUPPORTS_HUGETLBFS
def_bool y
config ARCH_WANT_GENERAL_HUGETLB
def_bool y
config ARCH_WANT_HUGE_PMD_SHARE
def_bool y if !ARM64_64K_PAGES
config HAVE_ARCH_TRANSPARENT_HUGEPAGE
def_bool y
config ARMV7_COMPAT
bool "Kernel support for ARMv7 applications"
depends on COMPAT
select SWP_EMULATE
help
This option enables features that allow that ran on an ARMv7 or older
processor to continue functioning.
If you want to execute ARMv7 applications, say Y
config ARMV7_COMPAT_CPUINFO
bool "Report backwards compatible cpu features in /proc/cpuinfo"
depends on ARMV7_COMPAT
default y
help
This option makes /proc/cpuinfo list CPU features that an ARMv7 or
earlier kernel would report, but are not optional on an ARMv8 or later
processor.
If you want to execute ARMv7 applications, say Y
source "mm/Kconfig"
config FORCE_MAX_ZONEORDER
int
default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
default "11"
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
---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 prctl(PR_SET_SECCOMP), it cannot be disabled
and the task is only allowed to execute a few safe syscalls
defined by each seccomp mode.
config ARM64_MODULE_CMODEL_LARGE
bool
config ARM64_ERRATUM_843419
bool "Cortex-A53: 843419: A load or store might access an incorrect address"
depends on MODULES
default y
select ARM64_MODULE_CMODEL_LARGE
select ARM64_MODULE_CMODEL_LARGE if MODULES
help
This option builds kernel modules using the large memory model in
order to avoid the use of the ADRP instruction, which can cause
a subsequent memory access to use an incorrect address on Cortex-A53
parts up to r0p4.
Note that the kernel itself must be linked with a version of ld
which fixes potentially affected ADRP instructions through the
use of veneers.
This option links the kernel with '--fix-cortex-a53-843419' and
builds modules using the large memory model in order to avoid the use
of the ADRP instruction, which can cause a subsequent memory access
to use an incorrect address on Cortex-A53 parts up to r0p4.
If unsure, say Y.
endmenu
menu "Boot options"
config CMDLINE
string "Default kernel command string"
default ""
help
Provide a set of default command-line options at build time by
entering them here. As a minimum, you should specify the the
root device (e.g. root=/dev/nfs).
choice
prompt "Kernel command line type" if CMDLINE != ""
default CMDLINE_FROM_BOOTLOADER
config CMDLINE_FROM_BOOTLOADER
bool "Use bootloader kernel arguments if available"
help
Uses the command-line options passed by the boot loader. If
the boot loader doesn't provide any, the default kernel command
string provided in CMDLINE will be used.
config CMDLINE_EXTEND
bool "Extend bootloader kernel arguments"
help
The command-line arguments provided by the boot loader will be
appended to the default kernel command string.
config CMDLINE_FORCE
bool "Always use the default kernel command string"
help
Always use the default kernel command string, even if the boot
loader passes other arguments to the kernel.
This is useful if you cannot or don't want to change the
command-line options your boot loader passes to the kernel.
endchoice
config BUILD_ARM64_APPENDED_DTB_IMAGE
bool "Build a concatenated Image.gz/dtb by default"
depends on OF
help
Enabling this option will cause a concatenated Image.gz and list of
DTBs to be built by default (instead of a standalone Image.gz.)
The image will built in arch/arm64/boot/Image.gz-dtb
config BUILD_ARM64_APPENDED_DTB_IMAGE_NAMES
string "Default dtb names"
depends on BUILD_ARM64_APPENDED_DTB_IMAGE
help
Space separated list of names of dtbs to append when
building a concatenated Image.gz-dtb.
config EFI
bool "UEFI runtime support"
depends on OF && !CPU_BIG_ENDIAN
select LIBFDT
select UCS2_STRING
select EFI_PARAMS_FROM_FDT
default y
help
This option provides support for runtime services provided
by UEFI firmware (such as non-volatile variables, realtime
clock, and platform reset). A UEFI stub is also provided to
allow the kernel to be booted as an EFI application. This
is only useful on systems that have UEFI firmware.
endmenu
menu "Userspace binary formats"
source "fs/Kconfig.binfmt"
config COMPAT
bool "Kernel support for 32-bit EL0"
depends on !ARM64_64K_PAGES
select COMPAT_BINFMT_ELF
select HAVE_UID16
select OLD_SIGSUSPEND3
select COMPAT_OLD_SIGACTION
help
This option enables support for a 32-bit EL0 running under a 64-bit
kernel at EL1. AArch32-specific components such as system calls,
the user helper functions, VFP support and the ptrace interface are
handled appropriately by the kernel.
If you want to execute 32-bit userspace applications, say Y.
config SYSVIPC_COMPAT
def_bool y
depends on COMPAT && SYSVIPC
endmenu
menu "Power management options"
source "kernel/power/Kconfig"
source "drivers/cpufreq/Kconfig"
config ARCH_SUSPEND_POSSIBLE
def_bool y
config ARM64_CPU_SUSPEND
def_bool PM_SLEEP
endmenu
menu "CPU Power Management"
source "drivers/cpuidle/Kconfig"
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "drivers/firmware/Kconfig"
source "fs/Kconfig"
source "arch/arm64/kvm/Kconfig"
source "arch/arm64/Kconfig.debug"
source "security/Kconfig"
source "crypto/Kconfig"
if CRYPTO
source "arch/arm64/crypto/Kconfig"
endif
source "lib/Kconfig"