562 lines
14 KiB
Plaintext
562 lines
14 KiB
Plaintext
config ARM64
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def_bool y
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select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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select ARCH_USE_CMPXCHG_LOCKREF
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select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
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select ARCH_WANT_OPTIONAL_GPIOLIB
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select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
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select ARCH_WANT_FRAME_POINTERS
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select ARM_AMBA
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select ARM_ARCH_TIMER
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select ARM_GIC
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select BUILDTIME_EXTABLE_SORT
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select CLONE_BACKWARDS
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select COMMON_CLK if !ARCH_MSM
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select CPU_PM if (SUSPEND || CPU_IDLE)
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select DCACHE_WORD_ACCESS
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select EDAC_SUPPORT
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select GENERIC_CLOCKEVENTS
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select GENERIC_CLOCKEVENTS_BROADCAST if SMP
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select GENERIC_CPU_AUTOPROBE
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select GENERIC_EARLY_IOREMAP
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select GENERIC_IOMAP
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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select GENERIC_SCHED_CLOCK
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_STRNCPY_FROM_USER
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select GENERIC_STRNLEN_USER
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select GENERIC_TIME_VSYSCALL
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select HARDIRQS_SW_RESEND
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select HAVE_ARCH_JUMP_LABEL
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select HAVE_ARCH_KGDB
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select HAVE_ARCH_TRACEHOOK
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select HAVE_C_RECORDMCOUNT
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select HAVE_DEBUG_BUGVERBOSE
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_DMA_API_DEBUG
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select HAVE_DMA_ATTRS
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select HAVE_DMA_CONTIGUOUS
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select HAVE_DYNAMIC_FTRACE
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select HAVE_EFFICIENT_UNALIGNED_ACCESS
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_GENERIC_DMA_COHERENT
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select HAVE_MEMBLOCK
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select HAVE_PATA_PLATFORM
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select HAVE_PERF_EVENTS
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_PERF_REGS
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select HAVE_PERF_USER_STACK_DUMP
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select IRQ_DOMAIN
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select MODULES_USE_ELF_RELA
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select NO_BOOTMEM
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select OF
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select OF_EARLY_FLATTREE
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select OF_RESERVED_MEM
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select PERF_USE_VMALLOC
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select POWER_RESET
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select POWER_SUPPLY
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select RTC_LIB
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select SPARSE_IRQ
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select SYSCTL_EXCEPTION_TRACE
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select MSM_JTAGV8 if CORESIGHT_ETMV4
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help
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ARM 64-bit (AArch64) Linux support.
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config 64BIT
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def_bool y
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config ARCH_PHYS_ADDR_T_64BIT
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def_bool y
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config MMU
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def_bool y
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config NO_IOPORT_MAP
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def_bool y
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config STACKTRACE_SUPPORT
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def_bool y
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config LOCKDEP_SUPPORT
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def_bool y
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config TRACE_IRQFLAGS_SUPPORT
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def_bool y
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config RWSEM_XCHGADD_ALGORITHM
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def_bool y
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config GENERIC_BUG
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def_bool y
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depends on BUG
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config GENERIC_HWEIGHT
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def_bool y
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config GENERIC_CSUM
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def_bool y
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config GENERIC_CALIBRATE_DELAY
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def_bool y
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config ZONE_DMA32
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def_bool y
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config ARCH_DMA_ADDR_T_64BIT
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def_bool y
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config NEED_DMA_MAP_STATE
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def_bool y
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config NEED_SG_DMA_LENGTH
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def_bool y
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config SWIOTLB
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def_bool y
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config IOMMU_HELPER
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def_bool SWIOTLB
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config KERNEL_MODE_NEON
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def_bool y
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config ARCH_HAS_CPUFREQ
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bool
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help
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Internal node to signify that the ARCH has CPUFREQ support
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and that the relevant menu configurations are displayed for
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it.
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "Platform selection"
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config ARCH_VEXPRESS
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bool "ARMv8 software model (Versatile Express)"
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select ARCH_REQUIRE_GPIOLIB
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select COMMON_CLK_VERSATILE
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select POWER_RESET_VEXPRESS
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select VEXPRESS_CONFIG
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help
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This enables support for the ARMv8 software model (Versatile
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Express).
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config ARCH_MSM
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bool "Qualcomm Platforms"
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select ARCH_REQUIRE_GPIOLIB
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select CLKDEV_LOOKUP
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select HAVE_CLK
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select HAVE_CLK_PREPARE
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select MSM_IRQ
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select PINCTRL
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select SOC_BUS
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select PCI
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select ARCH_HAS_CPUFREQ
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select CPU_FREQ_MSM
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select PM_DEVFREQ
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select MSM_DEVFREQ_DEVBW
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select MSM_BIMC_BWMON
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select DEVFREQ_GOV_MSM_BW_HWMON
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select DEVFREQ_SIMPLE_DEV
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select ARCH_HAS_OPP
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help
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This enables support for the ARMv8 based Qualcomm chipsets.
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config ARCH_MSM8916
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bool "Enable Support for Qualcomm MSM8916"
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depends on ARCH_MSM
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help
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This enables support for the MSM8916 chipset. If you dont
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know what do here, say N
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config ARCH_MSM8994
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bool "Enable Support for Qualcomm MSM8994"
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depends on ARCH_MSM
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help
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This enables support for the MSM8994 chipset. If you dont
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know what do here, say N
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config ARCH_MSM8994_V1_TLBI_WA
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bool "Enable MSM8994 v1 TLBI workaround"
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depends on ARCH_MSM8994
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help
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This enables support for the MSM8994 v1 TLBI workaround. This
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workaround is required for MSM8994 V1 revision where the
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[39:38] bits of VA are tied to zero and due to which TLBI
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operations with VA or ASID will not work.
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config MSM8994_V1_PMUIRQ_WA
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bool "Enable MSM8994 v1 PMU-CTI IRQ workaround"
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depends on ARCH_MSM8994 && CORESIGHT_CTI
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help
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This enables support for the MSM8994 v1 PMU-CTI IRQ workaround.
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This workaround is required for MSM8994 V1 revision where the
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percpu PMU interrupt is incorrectly connected to the corresponding
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CPUs in the other cluster.
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config ARCH_MSM8992
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bool "Enable Support for Qualcomm MSM8992"
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depends on ARCH_MSM
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help
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Enable kernel support for the MSM8992 chipset. If you don't
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know what this is, you can safely say 'N' here.
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config ARCH_XGENE
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bool "AppliedMicro X-Gene SOC Family"
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help
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This enables support for AppliedMicro X-Gene SOC Family
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endmenu
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menu "Bus support"
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config ARM_AMBA
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bool
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config PCI
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bool "PCI support"
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help
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Find out whether you have a PCI motherboard. PCI is the name of a
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bus system, i.e. the way the CPU talks to the other stuff inside
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your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
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VESA. If you have PCI, say Y, otherwise N.
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config PCI_DOMAINS
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bool
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depends on PCI
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config PCI_SYSCALL
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def_bool PCI
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source "drivers/pci/Kconfig"
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source "drivers/pci/pcie/Kconfig"
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endmenu
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menu "Kernel Features"
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config ARM64_DCACHE_DISABLE
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bool "Disable CPU Data Caches"
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help
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Disable CPU data cache usage by setting the SCTLR[C] bit during
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kernel initialization. This will result in a considerable
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performance impact, but may be useful in certain situations.
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If you are not sure what to do, select 'N' here.
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config ARM64_ICACHE_DISABLE
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bool "Disable CPU Instruction Caches"
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help
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Disable CPU instruction cache usage by setting the SCTLR[I]
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bit during kernel initialization. This will result in a
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considerable performance impact, but may be useful in certain
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situations.
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If you are not sure what to do, select 'N' here.
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config ARM64_64K_PAGES
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bool "Enable 64KB pages support"
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help
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This feature enables 64KB pages support (4KB by default)
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allowing only two levels of page tables and faster TLB
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look-up. AArch32 emulation is not available when this feature
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is enabled.
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config CPU_BIG_ENDIAN
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bool "Build big-endian kernel"
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help
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Say Y if you plan on running a kernel in big-endian mode.
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config SMP
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bool "Symmetric Multi-Processing"
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help
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This enables support for systems with more than one CPU. If
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you say N here, the kernel will run on single and
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multiprocessor machines, but will use only one CPU of a
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multiprocessor machine. If you say Y here, the kernel will run
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on many, but not all, single processor machines. On a single
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processor machine, the kernel will run faster if you say N
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here.
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If you don't know what to do here, say N.
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on SMP
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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making when dealing with multi-core CPU chips at a cost of slightly
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increased overhead in some places. If unsure say N here.
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config SCHED_SMT
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bool "SMT scheduler support"
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depends on SMP
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help
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Improves the CPU scheduler's decision making when dealing with
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MultiThreading at a cost of slightly increased overhead in some
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places. If unsure say N here.
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config NR_CPUS
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int "Maximum number of CPUs (2-32)"
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range 2 32
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depends on SMP
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# These have to remain sorted largest to smallest
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default "8"
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SMP
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help
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu.
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source kernel/Kconfig.preempt
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config SWP_EMULATE
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bool "Emulate SWP/SWPB instructions"
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help
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ARMv6 architecture deprecates use of the SWP/SWPB instructions. ARMv8
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oblosetes the use of SWP/SWPB instructions. ARMv7 multiprocessing
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extensions introduce the ability to disable these instructions,
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triggering an undefined instruction exception when executed. Say Y
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here to enable software emulation of these instructions for userspace
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(not kernel) using LDREX/STREX. Also creates /proc/cpu/swp_emulation
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for statistics.
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In some older versions of glibc [<=2.8] SWP is used during futex
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trylock() operations with the assumption that the code will not
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be preempted. This invalid assumption may be more likely to fail
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with SWP emulation enabled, leading to deadlock of the user
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application.
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NOTE: when accessing uncached shared regions, LDREX/STREX rely
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on an external transaction monitoring block called a global
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monitor to maintain update atomicity. If your system does not
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implement a global monitor, this option can cause programs that
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perform SWP operations to uncached memory to deadlock.
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If unsure, say Y.
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config HZ
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int
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default 100
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config ARCH_HAS_HOLES_MEMORYMODEL
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def_bool y if SPARSEMEM
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool ARCH_SPARSEMEM_ENABLE
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config ARCH_SELECT_MEMORY_MODEL
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def_bool ARCH_SPARSEMEM_ENABLE
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config HAVE_ARCH_PFN_VALID
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def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
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config HW_PERF_EVENTS
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bool "Enable hardware performance counter support for perf events"
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depends on PERF_EVENTS
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default y
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help
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Enable hardware performance counter support for perf events. If
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disabled, perf events will use software events only.
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config PERF_EVENTS_USERMODE
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bool "Enable usermode access for perf events"
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depends on PERF_EVENTS
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help
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Enable user-mode access to performance counters for perf events.
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If enabled, the access permissions allowing CPU performance
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counters to be accessed from user-mode are set.
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If you want user-mode programs to access perf events, say Y
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config PERF_EVENTS_RESET_PMU_DEBUGFS
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bool "Reset PMU via debugfs node"
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depends on PERF_EVENTS
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help
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Enable the debugfs node that can be used to reset PMUs and all
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state variables associated with PMUs. If enabled, PMU and internal
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state variable are cleared.
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If you want to reset PMU and PMU related internal Perf variables
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via debugfs then say Y.
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config SYS_SUPPORTS_HUGETLBFS
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def_bool y
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config ARCH_WANT_GENERAL_HUGETLB
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def_bool y
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config ARCH_WANT_HUGE_PMD_SHARE
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def_bool y if !ARM64_64K_PAGES
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config HAVE_ARCH_TRANSPARENT_HUGEPAGE
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def_bool y
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config ARMV7_COMPAT
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bool "Kernel support for ARMv7 applications"
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depends on COMPAT
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select SWP_EMULATE
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help
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This option enables features that allow that ran on an ARMv7 or older
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processor to continue functioning.
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If you want to execute ARMv7 applications, say Y
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config ARMV7_COMPAT_CPUINFO
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bool "Report backwards compatible cpu features in /proc/cpuinfo"
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depends on ARMV7_COMPAT
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default y
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help
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This option makes /proc/cpuinfo list CPU features that an ARMv7 or
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earlier kernel would report, but are not optional on an ARMv8 or later
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processor.
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If you want to execute ARMv7 applications, say Y
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source "mm/Kconfig"
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config XEN_DOM0
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def_bool y
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depends on XEN
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config XEN
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bool "Xen guest support on ARM64 (EXPERIMENTAL)"
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depends on ARM64 && OF
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select SWIOTLB_XEN
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help
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Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
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config FORCE_MAX_ZONEORDER
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int
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default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
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default "11"
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endmenu
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menu "Boot options"
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config CMDLINE
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string "Default kernel command string"
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default ""
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help
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Provide a set of default command-line options at build time by
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entering them here. As a minimum, you should specify the the
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root device (e.g. root=/dev/nfs).
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choice
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prompt "Kernel command line type" if CMDLINE != ""
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default CMDLINE_FROM_BOOTLOADER
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config CMDLINE_FROM_BOOTLOADER
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bool "Use bootloader kernel arguments if available"
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help
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Uses the command-line options passed by the boot loader. If
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the boot loader doesn't provide any, the default kernel command
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string provided in CMDLINE will be used.
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config CMDLINE_EXTEND
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bool "Extend bootloader kernel arguments"
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help
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The command-line arguments provided by the boot loader will be
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appended to the default kernel command string.
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config CMDLINE_FORCE
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bool "Always use the default kernel command string"
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help
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Always use the default kernel command string, even if the boot
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loader passes other arguments to the kernel.
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This is useful if you cannot or don't want to change the
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command-line options your boot loader passes to the kernel.
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endchoice
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config BUILD_ARM64_APPENDED_DTB_IMAGE
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bool "Build a concatenated Image.gz/dtb by default"
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depends on OF
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help
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Enabling this option will cause a concatenated Image.gz and list of
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DTBs to be built by default (instead of a standalone Image.gz.)
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The image will built in arch/arm64/boot/Image.gz-dtb
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config BUILD_ARM64_APPENDED_DTB_IMAGE_NAMES
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string "Default dtb names"
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depends on BUILD_ARM64_APPENDED_DTB_IMAGE
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help
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Space separated list of names of dtbs to append when
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building a concatenated Image.gz-dtb.
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endmenu
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menu "Userspace binary formats"
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source "fs/Kconfig.binfmt"
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config COMPAT
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bool "Kernel support for 32-bit EL0"
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depends on !ARM64_64K_PAGES
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select COMPAT_BINFMT_ELF
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select HAVE_UID16
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select OLD_SIGSUSPEND3
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select COMPAT_OLD_SIGACTION
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help
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This option enables support for a 32-bit EL0 running under a 64-bit
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kernel at EL1. AArch32-specific components such as system calls,
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the user helper functions, VFP support and the ptrace interface are
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handled appropriately by the kernel.
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If you want to execute 32-bit userspace applications, say Y.
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config SYSVIPC_COMPAT
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def_bool y
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depends on COMPAT && SYSVIPC
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endmenu
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menu "Power management options"
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source "kernel/power/Kconfig"
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config ARCH_SUSPEND_POSSIBLE
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def_bool y
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config ARM64_CPU_SUSPEND
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def_bool PM_SLEEP
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endmenu
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menu "CPU Power Management"
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if ARCH_HAS_CPUFREQ
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source "drivers/cpufreq/Kconfig"
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endif
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source "drivers/cpuidle/Kconfig"
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endmenu
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "fs/Kconfig"
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source "arch/arm64/kvm/Kconfig"
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source "arch/arm64/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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source "lib/Kconfig"
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source "arch/arm64/mm/Kconfig"
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