2012-04-20 17:45:54 +04:00
|
|
|
config ARM64
|
|
|
|
def_bool y
|
2015-06-10 19:08:53 +03:00
|
|
|
select ACPI_CCA_REQUIRED if ACPI
|
2015-03-24 20:58:51 +03:00
|
|
|
select ACPI_GENERIC_GSI if ACPI
|
2015-03-24 17:02:51 +03:00
|
|
|
select ACPI_REDUCED_HARDWARE_ONLY if ACPI
|
2012-04-20 17:45:54 +04:00
|
|
|
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
|
2015-04-15 01:48:00 +03:00
|
|
|
select ARCH_HAS_ELF_RANDOMIZE
|
2014-12-13 03:57:44 +03:00
|
|
|
select ARCH_HAS_GCOV_PROFILE_ALL
|
2014-08-09 01:23:25 +04:00
|
|
|
select ARCH_HAS_SG_CHAIN
|
2013-09-04 13:55:17 +04:00
|
|
|
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
|
2014-05-09 13:33:01 +04:00
|
|
|
select ARCH_USE_CMPXCHG_LOCKREF
|
2014-06-06 21:53:16 +04:00
|
|
|
select ARCH_SUPPORTS_ATOMIC_RMW
|
2013-02-21 14:42:57 +04:00
|
|
|
select ARCH_WANT_OPTIONAL_GPIOLIB
|
2012-11-07 18:16:28 +04:00
|
|
|
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
|
2013-01-29 22:25:41 +04:00
|
|
|
select ARCH_WANT_FRAME_POINTERS
|
2012-12-18 19:26:13 +04:00
|
|
|
select ARM_AMBA
|
2012-11-20 14:06:00 +04:00
|
|
|
select ARM_ARCH_TIMER
|
2013-01-14 16:39:31 +04:00
|
|
|
select ARM_GIC
|
2014-07-04 11:28:30 +04:00
|
|
|
select AUDIT_ARCH_COMPAT_GENERIC
|
2014-11-25 21:47:22 +03:00
|
|
|
select ARM_GIC_V2M if PCI_MSI
|
2014-06-30 19:01:31 +04:00
|
|
|
select ARM_GIC_V3
|
2014-11-24 17:35:19 +03:00
|
|
|
select ARM_GIC_V3_ITS if PCI_MSI
|
2015-07-31 17:46:16 +03:00
|
|
|
select ARM_PSCI_FW
|
2013-05-08 20:29:24 +04:00
|
|
|
select BUILDTIME_EXTABLE_SORT
|
2012-12-18 19:27:25 +04:00
|
|
|
select CLONE_BACKWARDS
|
2012-09-22 21:33:36 +04:00
|
|
|
select COMMON_CLK
|
2013-11-07 22:37:14 +04:00
|
|
|
select CPU_PM if (SUSPEND || CPU_IDLE)
|
2013-11-06 23:32:13 +04:00
|
|
|
select DCACHE_WORD_ACCESS
|
2015-07-07 19:15:39 +03:00
|
|
|
select EDAC_SUPPORT
|
2014-10-10 02:26:44 +04:00
|
|
|
select GENERIC_ALLOCATOR
|
2012-04-20 17:45:54 +04:00
|
|
|
select GENERIC_CLOCKEVENTS
|
2015-05-29 20:28:44 +03:00
|
|
|
select GENERIC_CLOCKEVENTS_BROADCAST
|
2014-03-04 05:10:04 +04:00
|
|
|
select GENERIC_CPU_AUTOPROBE
|
2014-04-08 02:39:52 +04:00
|
|
|
select GENERIC_EARLY_IOREMAP
|
2015-08-21 06:40:22 +03:00
|
|
|
select GENERIC_IDLE_POLL_SETUP
|
2012-04-20 17:45:54 +04:00
|
|
|
select GENERIC_IRQ_PROBE
|
|
|
|
select GENERIC_IRQ_SHOW
|
2015-04-22 20:16:33 +03:00
|
|
|
select GENERIC_IRQ_SHOW_LEVEL
|
2014-11-19 16:09:07 +03:00
|
|
|
select GENERIC_PCI_IOMAP
|
2013-07-19 03:21:18 +04:00
|
|
|
select GENERIC_SCHED_CLOCK
|
2012-04-20 17:45:54 +04:00
|
|
|
select GENERIC_SMP_IDLE_THREAD
|
2013-11-06 21:20:22 +04:00
|
|
|
select GENERIC_STRNCPY_FROM_USER
|
|
|
|
select GENERIC_STRNLEN_USER
|
2012-04-20 17:45:54 +04:00
|
|
|
select GENERIC_TIME_VSYSCALL
|
2014-08-26 14:03:17 +04:00
|
|
|
select HANDLE_DOMAIN_IRQ
|
2012-04-20 17:45:54 +04:00
|
|
|
select HARDIRQS_SW_RESEND
|
2014-10-24 16:22:20 +04:00
|
|
|
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
|
2014-07-04 11:28:30 +04:00
|
|
|
select HAVE_ARCH_AUDITSYSCALL
|
2014-11-03 05:02:23 +03:00
|
|
|
select HAVE_ARCH_BITREVERSE
|
2014-01-07 18:17:13 +04:00
|
|
|
select HAVE_ARCH_JUMP_LABEL
|
2015-10-12 18:52:58 +03:00
|
|
|
select HAVE_ARCH_KASAN if SPARSEMEM_VMEMMAP
|
2014-01-28 15:20:22 +04:00
|
|
|
select HAVE_ARCH_KGDB
|
2014-11-28 08:26:39 +03:00
|
|
|
select HAVE_ARCH_SECCOMP_FILTER
|
2012-04-20 17:45:54 +04:00
|
|
|
select HAVE_ARCH_TRACEHOOK
|
2014-08-27 08:15:30 +04:00
|
|
|
select HAVE_BPF_JIT
|
2014-04-30 13:54:32 +04:00
|
|
|
select HAVE_C_RECORDMCOUNT
|
2014-06-26 02:55:03 +04:00
|
|
|
select HAVE_CC_STACKPROTECTOR
|
2014-10-24 16:22:20 +04:00
|
|
|
select HAVE_CMPXCHG_DOUBLE
|
2015-05-29 16:57:47 +03:00
|
|
|
select HAVE_CMPXCHG_LOCAL
|
2012-10-09 03:28:13 +04:00
|
|
|
select HAVE_DEBUG_BUGVERBOSE
|
2012-10-09 03:28:11 +04:00
|
|
|
select HAVE_DEBUG_KMEMLEAK
|
2012-04-20 17:45:54 +04:00
|
|
|
select HAVE_DMA_API_DEBUG
|
|
|
|
select HAVE_DMA_ATTRS
|
2013-12-12 23:28:33 +04:00
|
|
|
select HAVE_DMA_CONTIGUOUS
|
2014-04-30 13:54:34 +04:00
|
|
|
select HAVE_DYNAMIC_FTRACE
|
2013-12-16 21:50:08 +04:00
|
|
|
select HAVE_EFFICIENT_UNALIGNED_ACCESS
|
2014-04-30 13:54:32 +04:00
|
|
|
select HAVE_FTRACE_MCOUNT_RECORD
|
2014-04-30 13:54:33 +04:00
|
|
|
select HAVE_FUNCTION_TRACER
|
|
|
|
select HAVE_FUNCTION_GRAPH_TRACER
|
2012-04-20 17:45:54 +04:00
|
|
|
select HAVE_GENERIC_DMA_COHERENT
|
|
|
|
select HAVE_HW_BREAKPOINT if PERF_EVENTS
|
|
|
|
select HAVE_MEMBLOCK
|
2014-02-07 21:12:45 +04:00
|
|
|
select HAVE_PATA_PLATFORM
|
2012-04-20 17:45:54 +04:00
|
|
|
select HAVE_PERF_EVENTS
|
2014-02-03 22:18:27 +04:00
|
|
|
select HAVE_PERF_REGS
|
|
|
|
select HAVE_PERF_USER_STACK_DUMP
|
2014-10-10 02:29:23 +04:00
|
|
|
select HAVE_RCU_TABLE_FREE
|
2014-04-30 13:54:36 +04:00
|
|
|
select HAVE_SYSCALL_TRACEPOINTS
|
2012-04-20 17:45:54 +04:00
|
|
|
select IRQ_DOMAIN
|
2015-04-27 23:53:09 +03:00
|
|
|
select IRQ_FORCED_THREADING
|
2012-10-16 14:26:57 +04:00
|
|
|
select MODULES_USE_ELF_RELA
|
2012-04-20 17:45:54 +04:00
|
|
|
select NO_BOOTMEM
|
|
|
|
select OF
|
|
|
|
select OF_EARLY_FLATTREE
|
2014-02-28 17:42:55 +04:00
|
|
|
select OF_RESERVED_MEM
|
2012-04-20 17:45:54 +04:00
|
|
|
select PERF_USE_VMALLOC
|
2013-02-28 22:14:37 +04:00
|
|
|
select POWER_RESET
|
|
|
|
select POWER_SUPPLY
|
2012-04-20 17:45:54 +04:00
|
|
|
select RTC_LIB
|
|
|
|
select SPARSE_IRQ
|
2012-10-09 03:28:16 +04:00
|
|
|
select SYSCTL_EXCEPTION_TRACE
|
2014-05-30 23:34:15 +04:00
|
|
|
select HAVE_CONTEXT_TRACKING
|
2012-04-20 17:45:54 +04:00
|
|
|
help
|
|
|
|
ARM 64-bit (AArch64) Linux support.
|
|
|
|
|
|
|
|
config 64BIT
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config ARCH_PHYS_ADDR_T_64BIT
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config MMU
|
|
|
|
def_bool y
|
|
|
|
|
2014-04-08 02:39:19 +04:00
|
|
|
config NO_IOPORT_MAP
|
2014-09-29 18:29:31 +04:00
|
|
|
def_bool y if !PCI
|
2012-04-20 17:45:54 +04:00
|
|
|
|
|
|
|
config STACKTRACE_SUPPORT
|
|
|
|
def_bool y
|
|
|
|
|
2015-08-18 22:50:10 +03:00
|
|
|
config ILLEGAL_POINTER_VALUE
|
|
|
|
hex
|
|
|
|
default 0xdead000000000000
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
config LOCKDEP_SUPPORT
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config TRACE_IRQFLAGS_SUPPORT
|
|
|
|
def_bool y
|
|
|
|
|
2014-03-14 21:47:05 +04:00
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
2012-04-20 17:45:54 +04:00
|
|
|
def_bool y
|
|
|
|
|
2015-07-24 18:37:48 +03:00
|
|
|
config GENERIC_BUG
|
|
|
|
def_bool y
|
|
|
|
depends on BUG
|
|
|
|
|
|
|
|
config GENERIC_BUG_RELATIVE_POINTERS
|
|
|
|
def_bool y
|
|
|
|
depends on GENERIC_BUG
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
config GENERIC_HWEIGHT
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config GENERIC_CSUM
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
|
|
def_bool y
|
|
|
|
|
2014-02-27 16:09:22 +04:00
|
|
|
config ZONE_DMA
|
2012-04-20 17:45:54 +04:00
|
|
|
def_bool y
|
|
|
|
|
2014-10-10 02:29:25 +04:00
|
|
|
config HAVE_GENERIC_RCU_GUP
|
|
|
|
def_bool y
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
config ARCH_DMA_ADDR_T_64BIT
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config NEED_DMA_MAP_STATE
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config NEED_SG_DMA_LENGTH
|
|
|
|
def_bool y
|
|
|
|
|
2015-05-29 20:28:44 +03:00
|
|
|
config SMP
|
|
|
|
def_bool y
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
config SWIOTLB
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config IOMMU_HELPER
|
|
|
|
def_bool SWIOTLB
|
|
|
|
|
2013-07-09 17:18:12 +04:00
|
|
|
config KERNEL_MODE_NEON
|
|
|
|
def_bool y
|
|
|
|
|
2014-04-19 02:19:59 +04:00
|
|
|
config FIX_EARLYCON_MEM
|
|
|
|
def_bool y
|
|
|
|
|
2015-04-15 01:45:39 +03:00
|
|
|
config PGTABLE_LEVELS
|
|
|
|
int
|
|
|
|
default 2 if ARM64_64K_PAGES && ARM64_VA_BITS_42
|
|
|
|
default 3 if ARM64_64K_PAGES && ARM64_VA_BITS_48
|
|
|
|
default 3 if ARM64_4K_PAGES && ARM64_VA_BITS_39
|
2015-10-19 16:19:37 +03:00
|
|
|
default 3 if ARM64_16K_PAGES && ARM64_VA_BITS_47
|
|
|
|
default 4 if !ARM64_64K_PAGES && ARM64_VA_BITS_48
|
2015-04-15 01:45:39 +03:00
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
|
|
source "kernel/Kconfig.freezer"
|
|
|
|
|
2015-07-20 22:09:16 +03:00
|
|
|
source "arch/arm64/Kconfig.platforms"
|
2012-04-20 17:45:54 +04:00
|
|
|
|
|
|
|
menu "Bus support"
|
|
|
|
|
2014-09-29 18:29:31 +04:00
|
|
|
config PCI
|
|
|
|
bool "PCI support"
|
|
|
|
help
|
|
|
|
This feature enables support for PCI bus system. If you say Y
|
|
|
|
here, the kernel will include drivers and infrastructure code
|
|
|
|
to support PCI bus devices.
|
|
|
|
|
|
|
|
config PCI_DOMAINS
|
|
|
|
def_bool PCI
|
|
|
|
|
|
|
|
config PCI_DOMAINS_GENERIC
|
|
|
|
def_bool PCI
|
|
|
|
|
|
|
|
config PCI_SYSCALL
|
|
|
|
def_bool PCI
|
|
|
|
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
source "drivers/pci/pcie/Kconfig"
|
|
|
|
source "drivers/pci/hotplug/Kconfig"
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
endmenu
|
|
|
|
|
|
|
|
menu "Kernel Features"
|
|
|
|
|
2014-11-14 18:54:12 +03:00
|
|
|
menu "ARM errata workarounds via the alternatives framework"
|
|
|
|
|
|
|
|
config ARM64_ERRATUM_826319
|
|
|
|
bool "Cortex-A53: 826319: System might deadlock if a write cannot complete until read data is accepted"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option adds an alternative code sequence to work around ARM
|
|
|
|
erratum 826319 on Cortex-A53 parts up to r0p2 with an AMBA 4 ACE or
|
|
|
|
AXI master interface and an L2 cache.
|
|
|
|
|
|
|
|
If a Cortex-A53 uses an AMBA AXI4 ACE interface to other processors
|
|
|
|
and is unable to accept a certain write via this interface, it will
|
|
|
|
not progress on read data presented on the read data channel and the
|
|
|
|
system can deadlock.
|
|
|
|
|
|
|
|
The workaround promotes data cache clean instructions to
|
|
|
|
data cache clean-and-invalidate.
|
|
|
|
Please note that this does not necessarily enable the workaround,
|
|
|
|
as it depends on the alternative framework, which will only patch
|
|
|
|
the kernel if an affected CPU is detected.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
|
|
|
config ARM64_ERRATUM_827319
|
|
|
|
bool "Cortex-A53: 827319: Data cache clean instructions might cause overlapping transactions to the interconnect"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option adds an alternative code sequence to work around ARM
|
|
|
|
erratum 827319 on Cortex-A53 parts up to r0p2 with an AMBA 5 CHI
|
|
|
|
master interface and an L2 cache.
|
|
|
|
|
|
|
|
Under certain conditions this erratum can cause a clean line eviction
|
|
|
|
to occur at the same time as another transaction to the same address
|
|
|
|
on the AMBA 5 CHI interface, which can cause data corruption if the
|
|
|
|
interconnect reorders the two transactions.
|
|
|
|
|
|
|
|
The workaround promotes data cache clean instructions to
|
|
|
|
data cache clean-and-invalidate.
|
|
|
|
Please note that this does not necessarily enable the workaround,
|
|
|
|
as it depends on the alternative framework, which will only patch
|
|
|
|
the kernel if an affected CPU is detected.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
|
|
|
config ARM64_ERRATUM_824069
|
|
|
|
bool "Cortex-A53: 824069: Cache line might not be marked as clean after a CleanShared snoop"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option adds an alternative code sequence to work around ARM
|
|
|
|
erratum 824069 on Cortex-A53 parts up to r0p2 when it is connected
|
|
|
|
to a coherent interconnect.
|
|
|
|
|
|
|
|
If a Cortex-A53 processor is executing a store or prefetch for
|
|
|
|
write instruction at the same time as a processor in another
|
|
|
|
cluster is executing a cache maintenance operation to the same
|
|
|
|
address, then this erratum might cause a clean cache line to be
|
|
|
|
incorrectly marked as dirty.
|
|
|
|
|
|
|
|
The workaround promotes data cache clean instructions to
|
|
|
|
data cache clean-and-invalidate.
|
|
|
|
Please note that this option does not necessarily enable the
|
|
|
|
workaround, as it depends on the alternative framework, which will
|
|
|
|
only patch the kernel if an affected CPU is detected.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
|
|
|
config ARM64_ERRATUM_819472
|
|
|
|
bool "Cortex-A53: 819472: Store exclusive instructions might cause data corruption"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option adds an alternative code sequence to work around ARM
|
|
|
|
erratum 819472 on Cortex-A53 parts up to r0p1 with an L2 cache
|
|
|
|
present when it is connected to a coherent interconnect.
|
|
|
|
|
|
|
|
If the processor is executing a load and store exclusive sequence at
|
|
|
|
the same time as a processor in another cluster is executing a cache
|
|
|
|
maintenance operation to the same address, then this erratum might
|
|
|
|
cause data corruption.
|
|
|
|
|
|
|
|
The workaround promotes data cache clean instructions to
|
|
|
|
data cache clean-and-invalidate.
|
|
|
|
Please note that this does not necessarily enable the workaround,
|
|
|
|
as it depends on the alternative framework, which will only patch
|
|
|
|
the kernel if an affected CPU is detected.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
|
|
|
config ARM64_ERRATUM_832075
|
|
|
|
bool "Cortex-A57: 832075: possible deadlock on mixing exclusive memory accesses with device loads"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option adds an alternative code sequence to work around ARM
|
|
|
|
erratum 832075 on Cortex-A57 parts up to r1p2.
|
|
|
|
|
|
|
|
Affected Cortex-A57 parts might deadlock when exclusive load/store
|
|
|
|
instructions to Write-Back memory are mixed with Device loads.
|
|
|
|
|
|
|
|
The workaround is to promote device loads to use Load-Acquire
|
|
|
|
semantics.
|
|
|
|
Please note that this does not necessarily enable the workaround,
|
|
|
|
as it depends on the alternative framework, which will only patch
|
|
|
|
the kernel if an affected CPU is detected.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
2015-03-23 22:07:02 +03:00
|
|
|
config ARM64_ERRATUM_845719
|
|
|
|
bool "Cortex-A53: 845719: a load might read incorrect data"
|
|
|
|
depends on COMPAT
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option adds an alternative code sequence to work around ARM
|
|
|
|
erratum 845719 on Cortex-A53 parts up to r0p4.
|
|
|
|
|
|
|
|
When running a compat (AArch32) userspace on an affected Cortex-A53
|
|
|
|
part, a load at EL0 from a virtual address that matches the bottom 32
|
|
|
|
bits of the virtual address used by a recent load at (AArch64) EL1
|
|
|
|
might return incorrect data.
|
|
|
|
|
|
|
|
The workaround is to write the contextidr_el1 register on exception
|
|
|
|
return to a 32-bit task.
|
|
|
|
Please note that this does not necessarily enable the workaround,
|
|
|
|
as it depends on the alternative framework, which will only patch
|
|
|
|
the kernel if an affected CPU is detected.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
2015-03-17 15:15:02 +03:00
|
|
|
config ARM64_ERRATUM_843419
|
|
|
|
bool "Cortex-A53: 843419: A load or store might access an incorrect address"
|
|
|
|
depends on MODULES
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option builds kernel modules using the large memory model in
|
|
|
|
order to avoid the use of the ADRP instruction, which can cause
|
|
|
|
a subsequent memory access to use an incorrect address on Cortex-A53
|
|
|
|
parts up to r0p4.
|
|
|
|
|
|
|
|
Note that the kernel itself must be linked with a version of ld
|
|
|
|
which fixes potentially affected ADRP instructions through the
|
|
|
|
use of veneers.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
2014-11-14 18:54:12 +03:00
|
|
|
endmenu
|
|
|
|
|
|
|
|
|
2014-05-12 13:40:38 +04:00
|
|
|
choice
|
|
|
|
prompt "Page size"
|
|
|
|
default ARM64_4K_PAGES
|
|
|
|
help
|
|
|
|
Page size (translation granule) configuration.
|
|
|
|
|
|
|
|
config ARM64_4K_PAGES
|
|
|
|
bool "4KB"
|
|
|
|
help
|
|
|
|
This feature enables 4KB pages support.
|
|
|
|
|
2015-10-19 16:19:37 +03:00
|
|
|
config ARM64_16K_PAGES
|
|
|
|
bool "16KB"
|
|
|
|
help
|
|
|
|
The system will use 16KB pages support. AArch32 emulation
|
|
|
|
requires applications compiled with 16K (or a multiple of 16K)
|
|
|
|
aligned segments.
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
config ARM64_64K_PAGES
|
2014-05-12 13:40:38 +04:00
|
|
|
bool "64KB"
|
2012-04-20 17:45:54 +04:00
|
|
|
help
|
|
|
|
This feature enables 64KB pages support (4KB by default)
|
|
|
|
allowing only two levels of page tables and faster TLB
|
2015-10-19 16:19:34 +03:00
|
|
|
look-up. AArch32 emulation requires applications compiled
|
|
|
|
with 64K aligned segments.
|
2012-04-20 17:45:54 +04:00
|
|
|
|
2014-05-12 13:40:38 +04:00
|
|
|
endchoice
|
|
|
|
|
|
|
|
choice
|
|
|
|
prompt "Virtual address space size"
|
|
|
|
default ARM64_VA_BITS_39 if ARM64_4K_PAGES
|
2015-10-19 16:19:37 +03:00
|
|
|
default ARM64_VA_BITS_47 if ARM64_16K_PAGES
|
2014-05-12 13:40:38 +04:00
|
|
|
default ARM64_VA_BITS_42 if ARM64_64K_PAGES
|
|
|
|
help
|
|
|
|
Allows choosing one of multiple possible virtual address
|
|
|
|
space sizes. The level of translation table is determined by
|
|
|
|
a combination of page size and virtual address space size.
|
|
|
|
|
|
|
|
config ARM64_VA_BITS_39
|
|
|
|
bool "39-bit"
|
|
|
|
depends on ARM64_4K_PAGES
|
|
|
|
|
|
|
|
config ARM64_VA_BITS_42
|
|
|
|
bool "42-bit"
|
|
|
|
depends on ARM64_64K_PAGES
|
|
|
|
|
2015-10-19 16:19:37 +03:00
|
|
|
config ARM64_VA_BITS_47
|
|
|
|
bool "47-bit"
|
|
|
|
depends on ARM64_16K_PAGES
|
|
|
|
|
2014-05-12 13:40:51 +04:00
|
|
|
config ARM64_VA_BITS_48
|
|
|
|
bool "48-bit"
|
|
|
|
|
2014-05-12 13:40:38 +04:00
|
|
|
endchoice
|
|
|
|
|
|
|
|
config ARM64_VA_BITS
|
|
|
|
int
|
|
|
|
default 39 if ARM64_VA_BITS_39
|
|
|
|
default 42 if ARM64_VA_BITS_42
|
2015-10-19 16:19:37 +03:00
|
|
|
default 47 if ARM64_VA_BITS_47
|
2014-05-12 13:40:51 +04:00
|
|
|
default 48 if ARM64_VA_BITS_48
|
2014-05-12 13:40:38 +04:00
|
|
|
|
2013-10-11 17:52:19 +04:00
|
|
|
config CPU_BIG_ENDIAN
|
|
|
|
bool "Build big-endian kernel"
|
|
|
|
help
|
|
|
|
Say Y if you plan on running a kernel in big-endian mode.
|
|
|
|
|
2014-03-04 11:51:17 +04:00
|
|
|
config SCHED_MC
|
|
|
|
bool "Multi-core scheduler support"
|
|
|
|
help
|
|
|
|
Multi-core scheduler support improves the CPU scheduler's decision
|
|
|
|
making when dealing with multi-core CPU chips at a cost of slightly
|
|
|
|
increased overhead in some places. If unsure say N here.
|
|
|
|
|
|
|
|
config SCHED_SMT
|
|
|
|
bool "SMT scheduler support"
|
|
|
|
help
|
|
|
|
Improves the CPU scheduler's decision making when dealing with
|
|
|
|
MultiThreading at a cost of slightly increased overhead in some
|
|
|
|
places. If unsure say N here.
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
config NR_CPUS
|
2015-03-18 14:01:18 +03:00
|
|
|
int "Maximum number of CPUs (2-4096)"
|
|
|
|
range 2 4096
|
2013-04-24 13:06:57 +04:00
|
|
|
# These have to remain sorted largest to smallest
|
2014-09-08 15:44:48 +04:00
|
|
|
default "64"
|
2012-04-20 17:45:54 +04:00
|
|
|
|
2013-10-24 23:30:18 +04:00
|
|
|
config HOTPLUG_CPU
|
|
|
|
bool "Support for hot-pluggable CPUs"
|
2015-09-24 12:32:14 +03:00
|
|
|
select GENERIC_IRQ_MIGRATION
|
2013-10-24 23:30:18 +04:00
|
|
|
help
|
|
|
|
Say Y here to experiment with turning CPUs off and on. CPUs
|
|
|
|
can be controlled through /sys/devices/system/cpu.
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
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
|
2015-10-02 12:55:03 +03:00
|
|
|
def_bool y
|
|
|
|
depends on ARM_PMU
|
2012-04-20 17:45:54 +04:00
|
|
|
|
2013-04-10 16:48:00 +04:00
|
|
|
config SYS_SUPPORTS_HUGETLBFS
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config ARCH_WANT_GENERAL_HUGETLB
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
config ARCH_WANT_HUGE_PMD_SHARE
|
2015-10-19 16:19:37 +03:00
|
|
|
def_bool y if ARM64_4K_PAGES || ARM64_16K_PAGES
|
2013-04-10 16:48:00 +04:00
|
|
|
|
2013-04-19 19:23:57 +04:00
|
|
|
config HAVE_ARCH_TRANSPARENT_HUGEPAGE
|
|
|
|
def_bool y
|
|
|
|
|
2014-04-03 20:48:54 +04:00
|
|
|
config ARCH_HAS_CACHE_LINE_SIZE
|
|
|
|
def_bool y
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
source "mm/Kconfig"
|
|
|
|
|
2014-11-28 08:26:39 +03:00
|
|
|
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.
|
|
|
|
|
2013-06-03 21:05:43 +04:00
|
|
|
config XEN_DOM0
|
|
|
|
def_bool y
|
|
|
|
depends on XEN
|
|
|
|
|
|
|
|
config XEN
|
2014-09-18 01:07:06 +04:00
|
|
|
bool "Xen guest support on ARM64"
|
2013-06-03 21:05:43 +04:00
|
|
|
depends on ARM64 && OF
|
2013-10-10 17:40:44 +04:00
|
|
|
select SWIOTLB_XEN
|
2013-06-03 21:05:43 +04:00
|
|
|
help
|
|
|
|
Say Y if you want to run Linux in a Virtual Machine on Xen on ARM64.
|
|
|
|
|
2013-04-25 18:19:21 +04:00
|
|
|
config FORCE_MAX_ZONEORDER
|
|
|
|
int
|
|
|
|
default "14" if (ARM64_64K_PAGES && TRANSPARENT_HUGEPAGE)
|
2015-10-19 16:19:37 +03:00
|
|
|
default "12" if (ARM64_16K_PAGES && TRANSPARENT_HUGEPAGE)
|
2013-04-25 18:19:21 +04:00
|
|
|
default "11"
|
2015-10-19 16:19:37 +03:00
|
|
|
help
|
|
|
|
The kernel memory allocator divides physically contiguous memory
|
|
|
|
blocks into "zones", where each zone is a power of two number of
|
|
|
|
pages. This option selects the largest power of two that the kernel
|
|
|
|
keeps in the memory allocator. If you need to allocate very large
|
|
|
|
blocks of physically contiguous memory, then you may need to
|
|
|
|
increase this value.
|
|
|
|
|
|
|
|
This config option is actually maximum order plus one. For example,
|
|
|
|
a value of 11 means that the largest free memory block is 2^10 pages.
|
|
|
|
|
|
|
|
We make sure that we can allocate upto a HugePage size for each configuration.
|
|
|
|
Hence we have :
|
|
|
|
MAX_ORDER = (PMD_SHIFT - PAGE_SHIFT) + 1 => PAGE_SHIFT - 2
|
|
|
|
|
|
|
|
However for 4K, we choose a higher default value, 11 as opposed to 10, giving us
|
|
|
|
4M allocations matching the default size used by generic code.
|
2013-04-25 18:19:21 +04:00
|
|
|
|
2014-11-20 19:51:10 +03:00
|
|
|
menuconfig ARMV8_DEPRECATED
|
|
|
|
bool "Emulate deprecated/obsolete ARMv8 instructions"
|
|
|
|
depends on COMPAT
|
|
|
|
help
|
|
|
|
Legacy software support may require certain instructions
|
|
|
|
that have been deprecated or obsoleted in the architecture.
|
|
|
|
|
|
|
|
Enable this config to enable selective emulation of these
|
|
|
|
features.
|
|
|
|
|
|
|
|
If unsure, say Y
|
|
|
|
|
|
|
|
if ARMV8_DEPRECATED
|
|
|
|
|
|
|
|
config SWP_EMULATION
|
|
|
|
bool "Emulate SWP/SWPB instructions"
|
|
|
|
help
|
|
|
|
ARMv8 obsoletes the use of A32 SWP/SWPB instructions such that
|
|
|
|
they are always undefined. Say Y here to enable software
|
|
|
|
emulation of these instructions for userspace using LDXR/STXR.
|
|
|
|
|
|
|
|
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, LDXR/STXR 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
|
|
|
|
|
|
|
|
config CP15_BARRIER_EMULATION
|
|
|
|
bool "Emulate CP15 Barrier instructions"
|
|
|
|
help
|
|
|
|
The CP15 barrier instructions - CP15ISB, CP15DSB, and
|
|
|
|
CP15DMB - are deprecated in ARMv8 (and ARMv7). It is
|
|
|
|
strongly recommended to use the ISB, DSB, and DMB
|
|
|
|
instructions instead.
|
|
|
|
|
|
|
|
Say Y here to enable software emulation of these
|
|
|
|
instructions for AArch32 userspace code. When this option is
|
|
|
|
enabled, CP15 barrier usage is traced which can help
|
|
|
|
identify software that needs updating.
|
|
|
|
|
|
|
|
If unsure, say Y
|
|
|
|
|
2015-01-21 15:43:11 +03:00
|
|
|
config SETEND_EMULATION
|
|
|
|
bool "Emulate SETEND instruction"
|
|
|
|
help
|
|
|
|
The SETEND instruction alters the data-endianness of the
|
|
|
|
AArch32 EL0, and is deprecated in ARMv8.
|
|
|
|
|
|
|
|
Say Y here to enable software emulation of the instruction
|
|
|
|
for AArch32 userspace code.
|
|
|
|
|
|
|
|
Note: All the cpus on the system must have mixed endian support at EL0
|
|
|
|
for this feature to be enabled. If a new CPU - which doesn't support mixed
|
|
|
|
endian - is hotplugged in after this feature has been enabled, there could
|
|
|
|
be unexpected results in the applications.
|
|
|
|
|
|
|
|
If unsure, say Y
|
2014-11-20 19:51:10 +03:00
|
|
|
endif
|
|
|
|
|
2015-07-27 17:54:13 +03:00
|
|
|
menu "ARMv8.1 architectural features"
|
|
|
|
|
|
|
|
config ARM64_HW_AFDBM
|
|
|
|
bool "Support for hardware updates of the Access and Dirty page flags"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
The ARMv8.1 architecture extensions introduce support for
|
|
|
|
hardware updates of the access and dirty information in page
|
|
|
|
table entries. When enabled in TCR_EL1 (HA and HD bits) on
|
|
|
|
capable processors, accesses to pages with PTE_AF cleared will
|
|
|
|
set this bit instead of raising an access flag fault.
|
|
|
|
Similarly, writes to read-only pages with the DBM bit set will
|
|
|
|
clear the read-only bit (AP[2]) instead of raising a
|
|
|
|
permission fault.
|
|
|
|
|
|
|
|
Kernels built with this configuration option enabled continue
|
|
|
|
to work on pre-ARMv8.1 hardware and the performance impact is
|
|
|
|
minimal. If unsure, say Y.
|
|
|
|
|
|
|
|
config ARM64_PAN
|
|
|
|
bool "Enable support for Privileged Access Never (PAN)"
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
Privileged Access Never (PAN; part of the ARMv8.1 Extensions)
|
|
|
|
prevents the kernel or hypervisor from accessing user-space (EL0)
|
|
|
|
memory directly.
|
|
|
|
|
|
|
|
Choosing this option will cause any unprotected (not using
|
|
|
|
copy_to_user et al) memory access to fail with a permission fault.
|
|
|
|
|
|
|
|
The feature is detected at runtime, and will remain as a 'nop'
|
|
|
|
instruction if the cpu does not implement the feature.
|
|
|
|
|
|
|
|
config ARM64_LSE_ATOMICS
|
|
|
|
bool "Atomic instructions"
|
|
|
|
help
|
|
|
|
As part of the Large System Extensions, ARMv8.1 introduces new
|
|
|
|
atomic instructions that are designed specifically to scale in
|
|
|
|
very large systems.
|
|
|
|
|
|
|
|
Say Y here to make use of these instructions for the in-kernel
|
|
|
|
atomic routines. This incurs a small overhead on CPUs that do
|
|
|
|
not support these instructions and requires the kernel to be
|
|
|
|
built with binutils >= 2.25.
|
|
|
|
|
|
|
|
endmenu
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2012-04-20 17:45:54 +04:00
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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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|
|
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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2014-07-02 16:54:43 +04:00
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config EFI_STUB
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bool
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2014-04-16 05:59:30 +04:00
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|
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config EFI
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|
|
bool "UEFI runtime support"
|
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|
|
depends on OF && !CPU_BIG_ENDIAN
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|
|
select LIBFDT
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|
|
select UCS2_STRING
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|
|
|
select EFI_PARAMS_FROM_FDT
|
2014-07-04 21:41:53 +04:00
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|
|
select EFI_RUNTIME_WRAPPERS
|
2014-07-02 16:54:43 +04:00
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|
|
select EFI_STUB
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|
|
|
select EFI_ARMSTUB
|
2014-04-16 05:59:30 +04:00
|
|
|
default y
|
|
|
|
help
|
|
|
|
This option provides support for runtime services provided
|
|
|
|
by UEFI firmware (such as non-volatile variables, realtime
|
2014-04-16 06:47:52 +04:00
|
|
|
clock, and platform reset). A UEFI stub is also provided to
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|
|
allow the kernel to be booted as an EFI application. This
|
|
|
|
is only useful on systems that have UEFI firmware.
|
2014-04-16 05:59:30 +04:00
|
|
|
|
2014-10-04 19:46:43 +04:00
|
|
|
config DMI
|
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|
|
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.
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
endmenu
|
|
|
|
|
|
|
|
menu "Userspace binary formats"
|
|
|
|
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
|
|
|
|
config COMPAT
|
|
|
|
bool "Kernel support for 32-bit EL0"
|
2015-10-19 16:19:32 +03:00
|
|
|
depends on ARM64_4K_PAGES || EXPERT
|
2012-04-20 17:45:54 +04:00
|
|
|
select COMPAT_BINFMT_ELF
|
2012-10-09 03:28:08 +04:00
|
|
|
select HAVE_UID16
|
2012-12-26 01:29:11 +04:00
|
|
|
select OLD_SIGSUSPEND3
|
2012-12-26 04:31:29 +04:00
|
|
|
select COMPAT_OLD_SIGACTION
|
2012-04-20 17:45:54 +04:00
|
|
|
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.
|
|
|
|
|
2015-10-19 16:19:37 +03:00
|
|
|
If you use a page size other than 4KB (i.e, 16KB or 64KB), please be aware
|
|
|
|
that you will only be able to execute AArch32 binaries that were compiled
|
|
|
|
with page size aligned segments.
|
2015-03-16 19:32:23 +03:00
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
If you want to execute 32-bit userspace applications, say Y.
|
|
|
|
|
|
|
|
config SYSVIPC_COMPAT
|
|
|
|
def_bool y
|
|
|
|
depends on COMPAT && SYSVIPC
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
2013-11-07 22:37:14 +04:00
|
|
|
menu "Power management options"
|
|
|
|
|
|
|
|
source "kernel/power/Kconfig"
|
|
|
|
|
|
|
|
config ARCH_SUSPEND_POSSIBLE
|
|
|
|
def_bool y
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
2013-07-17 17:54:21 +04:00
|
|
|
menu "CPU Power Management"
|
|
|
|
|
|
|
|
source "drivers/cpuidle/Kconfig"
|
|
|
|
|
2014-02-24 06:27:57 +04:00
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
source "net/Kconfig"
|
|
|
|
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
|
2014-04-16 05:59:30 +04:00
|
|
|
source "drivers/firmware/Kconfig"
|
|
|
|
|
2015-03-24 17:02:53 +03:00
|
|
|
source "drivers/acpi/Kconfig"
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
source "fs/Kconfig"
|
|
|
|
|
2013-07-04 16:34:32 +04:00
|
|
|
source "arch/arm64/kvm/Kconfig"
|
|
|
|
|
2012-04-20 17:45:54 +04:00
|
|
|
source "arch/arm64/Kconfig.debug"
|
|
|
|
|
|
|
|
source "security/Kconfig"
|
|
|
|
|
|
|
|
source "crypto/Kconfig"
|
2014-03-06 12:23:33 +04:00
|
|
|
if CRYPTO
|
|
|
|
source "arch/arm64/crypto/Kconfig"
|
|
|
|
endif
|
2012-04-20 17:45:54 +04:00
|
|
|
|
|
|
|
source "lib/Kconfig"
|