select ARM_GIC_V2M if PCI_MSI
select ARM_GIC_V3
select ARM_GIC_V3_ITS if PCI_MSI
+ select ARM_PSCI_FW
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
select EDAC_SUPPORT
select GENERIC_ALLOCATOR
select GENERIC_CLOCKEVENTS
- select GENERIC_CLOCKEVENTS_BROADCAST if SMP
+ select GENERIC_CLOCKEVENTS_BROADCAST
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
select GENERIC_IRQ_PROBE
select HAVE_C_RECORDMCOUNT
select HAVE_CC_STACKPROTECTOR
select HAVE_CMPXCHG_DOUBLE
+ select HAVE_CMPXCHG_LOCAL
select HAVE_DEBUG_BUGVERBOSE
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
config STACKTRACE_SUPPORT
def_bool y
+config ILLEGAL_POINTER_VALUE
+ hex
+ default 0xdead000000000000
+
config LOCKDEP_SUPPORT
def_bool y
config RWSEM_XCHGADD_ALGORITHM
def_bool y
+config GENERIC_BUG
+ def_bool y
+ depends on BUG
+
+config GENERIC_BUG_RELATIVE_POINTERS
+ def_bool y
+ depends on GENERIC_BUG
+
config GENERIC_HWEIGHT
def_bool y
config NEED_SG_DMA_LENGTH
def_bool y
+config SMP
+ def_bool y
+
config SWIOTLB
def_bool y
source "kernel/Kconfig.freezer"
-menu "Platform selection"
-
-config ARCH_EXYNOS
- bool
- help
- This enables support for Samsung Exynos SoC family
-
-config ARCH_EXYNOS7
- bool "ARMv8 based Samsung Exynos7"
- select ARCH_EXYNOS
- select COMMON_CLK_SAMSUNG
- select HAVE_S3C2410_WATCHDOG if WATCHDOG
- select HAVE_S3C_RTC if RTC_CLASS
- select PINCTRL
- select PINCTRL_EXYNOS
-
- help
- This enables support for Samsung Exynos7 SoC family
-
-config ARCH_FSL_LS2085A
- bool "Freescale LS2085A SOC"
- help
- This enables support for Freescale LS2085A SOC.
-
-config ARCH_HISI
- bool "Hisilicon SoC Family"
- help
- This enables support for Hisilicon ARMv8 SoC family
-
-config ARCH_MEDIATEK
- bool "Mediatek MT65xx & MT81xx ARMv8 SoC"
- select ARM_GIC
- select PINCTRL
- help
- Support for Mediatek MT65xx & MT81xx ARMv8 SoCs
-
-config ARCH_QCOM
- bool "Qualcomm Platforms"
- select PINCTRL
- help
- This enables support for the ARMv8 based Qualcomm chipsets.
-
-config ARCH_SEATTLE
- bool "AMD Seattle SoC Family"
- help
- This enables support for AMD Seattle SOC Family
-
-config ARCH_TEGRA
- bool "NVIDIA Tegra SoC Family"
- select ARCH_HAS_RESET_CONTROLLER
- select ARCH_REQUIRE_GPIOLIB
- select CLKDEV_LOOKUP
- select CLKSRC_MMIO
- select CLKSRC_OF
- select GENERIC_CLOCKEVENTS
- select HAVE_CLK
- select PINCTRL
- select RESET_CONTROLLER
- help
- This enables support for the NVIDIA Tegra SoC family.
-
-config ARCH_TEGRA_132_SOC
- bool "NVIDIA Tegra132 SoC"
- depends on ARCH_TEGRA
- select PINCTRL_TEGRA124
- select USB_ULPI if USB_PHY
- select USB_ULPI_VIEWPORT if USB_PHY
- help
- Enable support for NVIDIA Tegra132 SoC, based on the Denver
- ARMv8 CPU. The Tegra132 SoC is similar to the Tegra124 SoC,
- but contains an NVIDIA Denver CPU complex in place of
- Tegra124's "4+1" Cortex-A15 CPU complex.
-
-config ARCH_SPRD
- bool "Spreadtrum SoC platform"
- help
- Support for Spreadtrum ARM based SoCs
-
-config ARCH_THUNDER
- bool "Cavium Inc. Thunder SoC Family"
- help
- This enables support for Cavium's Thunder Family of SoCs.
-
-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_ZYNQMP
- bool "Xilinx ZynqMP Family"
- help
- This enables support for Xilinx ZynqMP Family
-
-endmenu
+source "arch/arm64/Kconfig.platforms"
menu "Bus support"
help
Say Y if you plan on running a kernel in big-endian mode.
-config SMP
- bool "Symmetric Multi-Processing"
- 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
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
config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
- depends on SMP
# These have to remain sorted largest to smallest
default "64"
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.
source kernel/Kconfig.preempt
-config UP_LATE_INIT
- def_bool y
- depends on !SMP
-
config HZ
int
default 100
If unsure, say Y
endif
+menu "ARMv8.1 architectural features"
+
+config ARM64_HW_AFDBM
+ bool "Support for hardware updates of the Access and Dirty page flags"
+ default y
+ help
+ The ARMv8.1 architecture extensions introduce support for
+ hardware updates of the access and dirty information in page
+ table entries. When enabled in TCR_EL1 (HA and HD bits) on
+ capable processors, accesses to pages with PTE_AF cleared will
+ set this bit instead of raising an access flag fault.
+ Similarly, writes to read-only pages with the DBM bit set will
+ clear the read-only bit (AP[2]) instead of raising a
+ permission fault.
+
+ Kernels built with this configuration option enabled continue
+ to work on pre-ARMv8.1 hardware and the performance impact is
+ minimal. If unsure, say Y.
+
+config ARM64_PAN
+ bool "Enable support for Privileged Access Never (PAN)"
+ default y
+ help
+ Privileged Access Never (PAN; part of the ARMv8.1 Extensions)
+ prevents the kernel or hypervisor from accessing user-space (EL0)
+ memory directly.
+
+ Choosing this option will cause any unprotected (not using
+ copy_to_user et al) memory access to fail with a permission fault.
+
+ The feature is detected at runtime, and will remain as a 'nop'
+ instruction if the cpu does not implement the feature.
+
+config ARM64_LSE_ATOMICS
+ bool "Atomic instructions"
+ help
+ As part of the Large System Extensions, ARMv8.1 introduces new
+ atomic instructions that are designed specifically to scale in
+ very large systems.
+
+ Say Y here to make use of these instructions for the in-kernel
+ atomic routines. This incurs a small overhead on CPUs that do
+ not support these instructions and requires the kernel to be
+ built with binutils >= 2.25.
+
+endmenu
+
endmenu
menu "Boot options"
projects / firefly-linux-kernel-4.4.55.git / blobdiff