663 lines
17 KiB
Plaintext
663 lines
17 KiB
Plaintext
config ARM64
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def_bool y
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select ARCH_BINFMT_ELF_RANDOMIZE_PIE
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select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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select ARCH_HAS_GCOV_PROFILE_ALL
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select ARCH_HAS_SG_CHAIN
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select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
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select ARCH_USE_CMPXCHG_LOCKREF
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select ARCH_SUPPORTS_ATOMIC_RMW
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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 AUDIT_ARCH_COMPAT_GENERIC
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select ARM_GIC_V2M if PCI_MSI
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select ARM_GIC_V3
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select ARM_GIC_V3_ITS if PCI_MSI
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select BUILDTIME_EXTABLE_SORT
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select CLONE_BACKWARDS
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select COMMON_CLK
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select CPU_PM if (SUSPEND || CPU_IDLE)
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select DCACHE_WORD_ACCESS
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select GENERIC_ALLOCATOR
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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_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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select GENERIC_PCI_IOMAP
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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 HANDLE_DOMAIN_IRQ
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select HARDIRQS_SW_RESEND
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select HAVE_ALIGNED_STRUCT_PAGE if SLUB
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_ARCH_JUMP_LABEL
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select HAVE_ARCH_KGDB
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select HAVE_ARCH_SECCOMP_FILTER
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select HAVE_ARCH_TRACEHOOK
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select HAVE_BPF_JIT
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select HAVE_C_RECORDMCOUNT
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select HAVE_CC_STACKPROTECTOR
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select HAVE_CMPXCHG_DOUBLE
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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_HW_BREAKPOINT if PERF_EVENTS
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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_PERF_REGS
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select HAVE_PERF_USER_STACK_DUMP
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select HAVE_RCU_TABLE_FREE
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select HAVE_SYSCALL_TRACEPOINTS
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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 HAVE_CONTEXT_TRACKING
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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 if !PCI
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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_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_DMA
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def_bool y
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config HAVE_GENERIC_RCU_GUP
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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 FIX_EARLYCON_MEM
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def_bool y
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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_SEATTLE
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bool "AMD Seattle SoC Family"
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help
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This enables support for AMD Seattle SOC Family
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config ARCH_THUNDER
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bool "Cavium Inc. Thunder SoC Family"
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help
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This enables support for Cavium's Thunder Family of SoCs.
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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_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 PCI
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bool "PCI support"
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help
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This feature enables support for PCI bus system. If you say Y
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here, the kernel will include drivers and infrastructure code
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to support PCI bus devices.
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config PCI_DOMAINS
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def_bool PCI
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config PCI_DOMAINS_GENERIC
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def_bool 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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source "drivers/pci/hotplug/Kconfig"
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endmenu
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menu "Kernel Features"
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menu "ARM errata workarounds via the alternatives framework"
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config ARM64_ERRATUM_826319
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bool "Cortex-A53: 826319: System might deadlock if a write cannot complete until read data is accepted"
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default y
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help
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This option adds an alternative code sequence to work around ARM
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erratum 826319 on Cortex-A53 parts up to r0p2 with an AMBA 4 ACE or
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AXI master interface and an L2 cache.
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If a Cortex-A53 uses an AMBA AXI4 ACE interface to other processors
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and is unable to accept a certain write via this interface, it will
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not progress on read data presented on the read data channel and the
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system can deadlock.
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The workaround promotes data cache clean instructions to
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data cache clean-and-invalidate.
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Please note that this does not necessarily enable the workaround,
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as it depends on the alternative framework, which will only patch
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the kernel if an affected CPU is detected.
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If unsure, say Y.
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config ARM64_ERRATUM_827319
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bool "Cortex-A53: 827319: Data cache clean instructions might cause overlapping transactions to the interconnect"
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default y
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help
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This option adds an alternative code sequence to work around ARM
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erratum 827319 on Cortex-A53 parts up to r0p2 with an AMBA 5 CHI
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master interface and an L2 cache.
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Under certain conditions this erratum can cause a clean line eviction
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to occur at the same time as another transaction to the same address
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on the AMBA 5 CHI interface, which can cause data corruption if the
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interconnect reorders the two transactions.
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The workaround promotes data cache clean instructions to
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data cache clean-and-invalidate.
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Please note that this does not necessarily enable the workaround,
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as it depends on the alternative framework, which will only patch
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the kernel if an affected CPU is detected.
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If unsure, say Y.
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config ARM64_ERRATUM_824069
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bool "Cortex-A53: 824069: Cache line might not be marked as clean after a CleanShared snoop"
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default y
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help
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This option adds an alternative code sequence to work around ARM
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erratum 824069 on Cortex-A53 parts up to r0p2 when it is connected
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to a coherent interconnect.
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If a Cortex-A53 processor is executing a store or prefetch for
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write instruction at the same time as a processor in another
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cluster is executing a cache maintenance operation to the same
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address, then this erratum might cause a clean cache line to be
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incorrectly marked as dirty.
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The workaround promotes data cache clean instructions to
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data cache clean-and-invalidate.
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Please note that this option does not necessarily enable the
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workaround, as it depends on the alternative framework, which will
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only patch the kernel if an affected CPU is detected.
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If unsure, say Y.
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config ARM64_ERRATUM_819472
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bool "Cortex-A53: 819472: Store exclusive instructions might cause data corruption"
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default y
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help
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This option adds an alternative code sequence to work around ARM
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erratum 819472 on Cortex-A53 parts up to r0p1 with an L2 cache
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present when it is connected to a coherent interconnect.
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If the processor is executing a load and store exclusive sequence at
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the same time as a processor in another cluster is executing a cache
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maintenance operation to the same address, then this erratum might
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cause data corruption.
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The workaround promotes data cache clean instructions to
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data cache clean-and-invalidate.
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Please note that this does not necessarily enable the workaround,
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as it depends on the alternative framework, which will only patch
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the kernel if an affected CPU is detected.
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If unsure, say Y.
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config ARM64_ERRATUM_832075
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bool "Cortex-A57: 832075: possible deadlock on mixing exclusive memory accesses with device loads"
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default y
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help
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This option adds an alternative code sequence to work around ARM
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erratum 832075 on Cortex-A57 parts up to r1p2.
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Affected Cortex-A57 parts might deadlock when exclusive load/store
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instructions to Write-Back memory are mixed with Device loads.
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The workaround is to promote device loads to use Load-Acquire
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semantics.
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Please note that this does not necessarily enable the workaround,
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as it depends on the alternative framework, which will only patch
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the kernel if an affected CPU is detected.
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If unsure, say Y.
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endmenu
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choice
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prompt "Page size"
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default ARM64_4K_PAGES
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help
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Page size (translation granule) configuration.
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config ARM64_4K_PAGES
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bool "4KB"
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help
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This feature enables 4KB pages support.
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config ARM64_64K_PAGES
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bool "64KB"
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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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endchoice
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choice
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prompt "Virtual address space size"
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default ARM64_VA_BITS_39 if ARM64_4K_PAGES
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default ARM64_VA_BITS_42 if ARM64_64K_PAGES
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help
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Allows choosing one of multiple possible virtual address
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space sizes. The level of translation table is determined by
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a combination of page size and virtual address space size.
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config ARM64_VA_BITS_39
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bool "39-bit"
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depends on ARM64_4K_PAGES
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config ARM64_VA_BITS_42
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bool "42-bit"
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depends on ARM64_64K_PAGES
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config ARM64_VA_BITS_48
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bool "48-bit"
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depends on !ARM_SMMU
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endchoice
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config ARM64_VA_BITS
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int
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default 39 if ARM64_VA_BITS_39
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default 42 if ARM64_VA_BITS_42
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default 48 if ARM64_VA_BITS_48
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config ARM64_PGTABLE_LEVELS
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int
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default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
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default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
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default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
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default 4 if ARM64_4K_PAGES && ARM64_VA_BITS_48
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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 (2-64)"
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range 2 64
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depends on SMP
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# These have to remain sorted largest to smallest
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default "64"
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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 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 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 ARCH_HAS_CACHE_LINE_SIZE
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def_bool y
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source "mm/Kconfig"
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config SECCOMP
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bool "Enable seccomp to safely compute untrusted bytecode"
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---help---
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This kernel feature is useful for number crunching applications
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that may need to compute untrusted bytecode during their
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execution. By using pipes or other transports made available to
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the process as file descriptors supporting the read/write
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syscalls, it's possible to isolate those applications in
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their own address space using seccomp. Once seccomp is
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enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
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and the task is only allowed to execute a few safe syscalls
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defined by each seccomp mode.
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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"
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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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menuconfig ARMV8_DEPRECATED
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bool "Emulate deprecated/obsolete ARMv8 instructions"
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depends on COMPAT
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help
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Legacy software support may require certain instructions
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that have been deprecated or obsoleted in the architecture.
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Enable this config to enable selective emulation of these
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features.
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If unsure, say Y
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if ARMV8_DEPRECATED
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config SWP_EMULATION
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bool "Emulate SWP/SWPB instructions"
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help
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ARMv8 obsoletes the use of A32 SWP/SWPB instructions such that
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they are always undefined. Say Y here to enable software
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emulation of these instructions for userspace using LDXR/STXR.
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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, LDXR/STXR 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 CP15_BARRIER_EMULATION
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bool "Emulate CP15 Barrier instructions"
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help
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The CP15 barrier instructions - CP15ISB, CP15DSB, and
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CP15DMB - are deprecated in ARMv8 (and ARMv7). It is
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strongly recommended to use the ISB, DSB, and DMB
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instructions instead.
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Say Y here to enable software emulation of these
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instructions for AArch32 userspace code. When this option is
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enabled, CP15 barrier usage is traced which can help
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identify software that needs updating.
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If unsure, say Y
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endif
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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
|
|
root device (e.g. root=/dev/nfs).
|
|
|
|
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.
|
|
|
|
config EFI_STUB
|
|
bool
|
|
|
|
config EFI
|
|
bool "UEFI runtime support"
|
|
depends on OF && !CPU_BIG_ENDIAN
|
|
select LIBFDT
|
|
select UCS2_STRING
|
|
select EFI_PARAMS_FROM_FDT
|
|
select EFI_RUNTIME_WRAPPERS
|
|
select EFI_STUB
|
|
select EFI_ARMSTUB
|
|
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.
|
|
|
|
config DMI
|
|
bool "Enable support for SMBIOS (DMI) tables"
|
|
depends on EFI
|
|
default y
|
|
help
|
|
This enables SMBIOS/DMI feature for systems.
|
|
|
|
This option is only useful on systems that have UEFI firmware.
|
|
However, even with this option, the resultant kernel should
|
|
continue to boot on existing non-UEFI platforms.
|
|
|
|
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"
|
|
|
|
config ARCH_SUSPEND_POSSIBLE
|
|
def_bool y
|
|
|
|
config ARM64_CPU_SUSPEND
|
|
def_bool PM_SLEEP
|
|
|
|
endmenu
|
|
|
|
menu "CPU Power Management"
|
|
|
|
source "drivers/cpuidle/Kconfig"
|
|
|
|
source "drivers/cpufreq/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"
|