797 lines
21 KiB
Text
797 lines
21 KiB
Text
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_HAS_SG_CHAIN
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select ARCH_HAS_OPP
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select ARCH_USE_CMPXCHG_LOCKREF
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select ARCH_HAS_OPP
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select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
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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 ARM_GIC_V3
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select BUILDTIME_EXTABLE_SORT
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select AUDIT_ARCH_COMPAT_GENERIC
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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_IOMAP
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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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_AUDITSYSCALL
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select HAVE_ARCH_SECCOMP_FILTER
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select HAVE_ARCH_TRACEHOOK
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select HAVE_C_RECORDMCOUNT
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select HAVE_CC_STACKPROTECTOR
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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_GENERIC_HARDIRQS
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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_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 CLOCKSOURCE_VALIDATE_LAST_CYCLE
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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
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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_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 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 ARM64_DMA_USE_IOMMU
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bool
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select ARM_HAS_SG_CHAIN
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select NEED_SG_DMA_LENGTH
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if ARM64_DMA_USE_IOMMU
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config ARM64_DMA_IOMMU_ALIGNMENT
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int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
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range 4 9
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default 8
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help
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DMA mapping framework by default aligns all buffers to the smallest
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PAGE_SIZE order which is greater than or equal to the requested buffer
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size. This works well for buffers up to a few hundreds kilobytes, but
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for larger buffers it just a waste of address space. Drivers which has
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relatively small addressing window (like 64Mib) might run out of
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virtual space with just a few allocations.
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With this parameter you can specify the maximum PAGE_SIZE order for
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DMA IOMMU buffers. Larger buffers will be aligned only to this
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specified order. The order is expressed as a power of two multiplied
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by the PAGE_SIZE.
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endif
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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 FIX_EARLYCON_MEM
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def_bool y
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config KERNEL_MODE_NEON
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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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source "kernel/Kconfig.dump"
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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_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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config ARCH_SUNXI
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bool "Allwinner SoC Family"
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select PINCTRL
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select SUNXI_TIMER
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help
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This enables support for Allwinner SUNXI SoC family
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if ARCH_SUNXI
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choice
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prompt "Select the architecture of SoC"
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default ARCH_SUN50I
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help
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Select the architecture for SoC
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sunxi
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`-- sun50i ----- Cortex-A53 based Family SoCs
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config ARCH_SUN50I
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bool "Allwinner SUN50I"
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endchoice
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# Select the wafer with sun50i
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if ARCH_SUN50I
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choice
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prompt "Select the wafer with arch sun50i"
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default ARCH_SUN50IW1
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help
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Select the wafer with arch sun50i
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config ARCH_SUN50IW1
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bool "Allwinner SUN50IW1 SoCs"
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help
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Support for Allwinner SUN50IW1 SoC family
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config ARCH_SUN50IW2
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bool "Allwinner SUN50IW2 SoCs"
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help
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Support for Allwinner SUN50IW2 SoC family
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config ARCH_SUN50IW3
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bool "Allwinner SUN50IW3 SoCs"
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help
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Support for Allwinner SUN50IW3 SoC family
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config ARCH_SUN50IW6
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bool "Allwinner SUN50IW6 SoCs"
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help
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Support for Allwinner SUN50IW6 SoC family
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endchoice
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endif
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# Select the SoC with specific arch and wafer
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if ARCH_SUN50IW1
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choice
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prompt "Select the SoC with wafer ARCH_SUN50IW1"
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default ARCH_SUN50IW1P1
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help
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Select the SoC with wafer ARCH_SUN50IW1
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config ARCH_SUN50IW1P1
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bool "Allwinner SUN50IW1P1"
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select SUNXI_SMC
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endchoice
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endif
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if ARCH_SUN50IW2
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choice
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prompt "Select the SoC with wafer ARCH_SUN50IW2"
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default ARCH_SUN50IW2P1
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help
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Select the SoC with wafer ARCH_SUN50IW2
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config ARCH_SUN50IW2P1
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bool "Allwinner SUN50IW2P1"
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select HAVE_UNSTABLE_SCHED_CLOCK
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select SUNXI_SMC
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endchoice
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endif
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if ARCH_SUN50IW3
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choice
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prompt "Select the SoC with wafer ARCH_SUN50IW3"
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default ARCH_SUN50IW3P1
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help
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Select the SoC with wafer ARCH_SUN50IW3
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config ARCH_SUN50IW3P1
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bool "Allwinner SUN50IW3P1"
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select HAVE_UNSTABLE_SCHED_CLOCK
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select SUNXI_SMC
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endchoice
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endif
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if ARCH_SUN50IW6
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choice
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prompt "Select the SoC with wafer ARCH_SUN50IW6"
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default ARCH_SUN50IW6P1
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help
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Select the SoC with wafer ARCH_SUN50IW6
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config ARCH_SUN50IW6P1
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bool "Allwinner SUN50IW6P1"
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select HAVE_UNSTABLE_SCHED_CLOCK
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select SUNXI_SMC
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select ARCH_SUPPORTS_MSI
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endchoice
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endif
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# Select the board between FPGA and EVB
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choice
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prompt "Allwinner development boards"
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depends on ARCH_SUNXI
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default FPGA_V4_PLATFORM
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config FPGA_V4_PLATFORM
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bool "FPGAv4 board"
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help
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Support for Allwinner's FPGAv4 board
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config FPGA_V7_PLATFORM
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bool "FPGAv7 board"
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help
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Support for Allwinner's FPGAv7 board
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config EVB_PLATFORM
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bool "EVB board"
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help
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Support for Allwinner's EVB board
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endchoice
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config SUNXI_SOC_NAME
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string "The name of SUNXI SoC"
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default ""
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help
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Used for /sysfs/.../sysinfo.
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endif # end of ARCH_SUNXI
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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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config ARM_AMBA
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bool
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endmenu
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menu "Kernel Features"
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menu "ARM errata workarounds"
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config ARM64_ERRATUM_845719
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bool "Cortex-A53: 845719: a load might read incorrect data"
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depends on COMPAT
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default n
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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 845719 on Cortex-A53 parts up to r0p4.
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When running a compat (AArch32) userspace on an affected Cortex-A53
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part, a load at EL0 from a virtual address that matches the bottom 32
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bits of the virtual address used by a recent load at (AArch64) EL1
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might return incorrect data.
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The workaround is to write the contextidr_el1 register on exception
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return to a 32-bit task.
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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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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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select USE_GENERIC_SMP_HELPERS
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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 CPU_OPS_SUNXI
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bool "Use SUNXI cpu ops instead of psci"
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depends on SMP && ARCH_SUN50I
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help
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Use sunxi cpu ops for SMP. If use psci 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 DISABLE_CPU_SCHED_DOMAIN_BALANCE
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bool "(EXPERIMENTAL) Disable CPU level scheduler load-balancing"
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help
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Disables scheduler load-balancing at CPU sched domain level.
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config SCHED_HMP
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bool "(EXPERIMENTAL) Heterogenous multiprocessor scheduling"
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depends on DISABLE_CPU_SCHED_DOMAIN_BALANCE && SCHED_MC && FAIR_GROUP_SCHED && !SCHED_AUTOGROUP
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help
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Experimental scheduler optimizations for heterogeneous platforms.
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Attempts to introspectively select task affinity to optimize power
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and performance. Basic support for multiple (>2) cpu types is in place,
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but it has only been tested with two types of cpus.
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There is currently no support for migration of task groups, hence
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!SCHED_AUTOGROUP. Furthermore, normal load-balancing must be disabled
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between cpus of different type (DISABLE_CPU_SCHED_DOMAIN_BALANCE).
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config SCHED_HMP_PRIO_FILTER
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bool "(EXPERIMENTAL) Filter HMP migrations by task priority"
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depends on SCHED_HMP
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help
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Enables task priority based HMP migration filter. Any task with
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a NICE value above the threshold will always be on low-power cpus
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with less compute capacity.
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config SCHED_HMP_PRIO_FILTER_VAL
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int "NICE priority threshold"
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default 5
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depends on SCHED_HMP_PRIO_FILTER
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config HMP_FAST_CPU_MASK
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string "HMP scheduler fast CPU mask"
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depends on SCHED_HMP
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help
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Leave empty to use device tree information.
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Specify the cpuids of the fast CPUs in the system as a list string,
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e.g. cpuid 0+1 should be specified as 0-1.
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config HMP_SLOW_CPU_MASK
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string "HMP scheduler slow CPU mask"
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depends on SCHED_HMP
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help
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Leave empty to use device tree information.
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Specify the cpuids of the slow CPUs in the system as a list string,
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e.g. cpuid 0+1 should be specified as 0-1.
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config HMP_VARIABLE_SCALE
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bool "Allows changing the load tracking scale through sysfs"
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depends on SCHED_HMP
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help
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When turned on, this option exports the thresholds and load average
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period value for the load tracking patches through sysfs.
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The values can be modified to change the rate of load accumulation
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and the thresholds used for HMP migration.
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The load_avg_period_ms is the time in ms to reach a load average of
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0.5 for an idle task of 0 load average ratio that start a busy loop.
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The up_threshold and down_threshold is the value to go to a faster
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CPU or to go back to a slower cpu.
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The {up,down}_threshold are devided by 1024 before being compared
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to the load average.
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For examples, with load_avg_period_ms = 128 and up_threshold = 512,
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a running task with a load of 0 will be migrated to a bigger CPU after
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128ms, because after 128ms its load_avg_ratio is 0.5 and the real
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up_threshold is 0.5.
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This patch has the same behavior as changing the Y of the load
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average computation to
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(1002/1024)^(LOAD_AVG_PERIOD/load_avg_period_ms)
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but it remove intermadiate overflows in computation.
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config HMP_FREQUENCY_INVARIANT_SCALE
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bool "(EXPERIMENTAL) Frequency-Invariant Tracked Load for HMP"
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depends on HMP_VARIABLE_SCALE && CPU_FREQ
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help
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Scales the current load contribution in line with the frequency
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of the CPU that the task was executed on.
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In this version, we use a simple linear scale derived from the
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maximum frequency reported by CPUFreq.
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Restricting tracked load to be scaled by the CPU's frequency
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represents the consumption of possible compute capacity
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(rather than consumption of actual instantaneous capacity as
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normal) and allows the HMP migration's simple threshold
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migration strategy to interact more predictably with CPUFreq's
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asynchronous compute capacity changes.
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config SCHED_HMP_LITTLE_PACKING
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bool "Small task packing for HMP"
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depends on SCHED_HMP
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default n
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help
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Allows the HMP Scheduler to pack small tasks into CPUs in the
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smallest HMP domain.
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Controlled by two sysfs files in sys/kernel/hmp.
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packing_enable: 1 to enable, 0 to disable packing. Default 1.
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packing_limit: runqueue load ratio where a RQ is considered
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to be full. Default is NICE_0_LOAD * 9/8.
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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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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
|
|
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 CC_STACKPROTECTOR
|
|
bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
|
|
help
|
|
This option turns on the -fstack-protector GCC feature. This
|
|
feature puts, at the beginning of functions, a canary value on
|
|
the stack just before the return address, and validates
|
|
the value just before actually returning. Stack based buffer
|
|
overflows (that need to overwrite this return address) now also
|
|
overwrite the canary, which gets detected and the attack is then
|
|
neutralized via a kernel panic.
|
|
This feature requires gcc version 4.2 or above.
|
|
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.
|
|
|
|
config SUNXI_OOPS_HOOK
|
|
bool "Homlet platform oops hook"
|
|
default n
|
|
help
|
|
Hooks for oops:
|
|
1. enable sdcard jtag
|
|
2. print cpu/dram/gpu frequency and temperature
|
|
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"
|