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Elixir Cross Referencer

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source "arch/powerpc/platforms/Kconfig.cputype"

config CONFIG_PPC32
	bool
	default y if !CONFIG_PPC64

config CONFIG_32BIT
	bool
	default y if CONFIG_PPC32

config CONFIG_64BIT
	bool
	default y if CONFIG_PPC64

config CONFIG_ARCH_PHYS_ADDR_T_64BIT
       def_bool CONFIG_PPC64 || CONFIG_PHYS_64BIT

config CONFIG_ARCH_DMA_ADDR_T_64BIT
	def_bool CONFIG_ARCH_PHYS_ADDR_T_64BIT

config CONFIG_MMU
	bool
	default y

config CONFIG_HAVE_SETUP_PER_CPU_AREA
	def_bool CONFIG_PPC64

config CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK
	def_bool CONFIG_PPC64

config CONFIG_NR_IRQS
	int "Number of virtual interrupt numbers"
	range 32 32768
	default "512"
	help
	  This defines the number of virtual interrupt numbers the kernel
	  can manage. Virtual interrupt numbers are what you see in
	  /proc/interrupts. If you configure your system to have too few,
	  drivers will fail to load or worse - handle with care.

config CONFIG_STACKTRACE_SUPPORT
	bool
	default y

config CONFIG_TRACE_IRQFLAGS_SUPPORT
	bool
	default y

config CONFIG_LOCKDEP_SUPPORT
	bool
	default y

config CONFIG_RWSEM_GENERIC_SPINLOCK
	bool

config CONFIG_RWSEM_XCHGADD_ALGORITHM
	bool
	default y

config CONFIG_GENERIC_LOCKBREAK
	bool
	default y
	depends on CONFIG_SMP && CONFIG_PREEMPT

config CONFIG_ARCH_HAS_ILOG2_U32
	bool
	default y

config CONFIG_ARCH_HAS_ILOG2_U64
	bool
	default y if CONFIG_64BIT

config CONFIG_GENERIC_HWEIGHT
	bool
	default y

config CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK
        bool

config CONFIG_PPC
	bool
	default y
	select CONFIG_BUILDTIME_EXTABLE_SORT
	select CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT
	select CONFIG_ARCH_MIGHT_HAVE_PC_SERIO
	select CONFIG_BINFMT_ELF
	select CONFIG_ARCH_HAS_ELF_RANDOMIZE
	select CONFIG_OF
	select CONFIG_OF_EARLY_FLATTREE
	select CONFIG_OF_RESERVED_MEM
	select CONFIG_HAVE_FTRACE_MCOUNT_RECORD
	select CONFIG_HAVE_DYNAMIC_FTRACE
	select CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS if CONFIG_MPROFILE_KERNEL
	select CONFIG_HAVE_FUNCTION_TRACER
	select CONFIG_HAVE_FUNCTION_GRAPH_TRACER
	select CONFIG_SYSCTL_EXCEPTION_TRACE
	select CONFIG_VIRT_TO_BUS if !CONFIG_PPC64
	select CONFIG_HAVE_IDE
	select CONFIG_HAVE_IOREMAP_PROT
	select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CONFIG_CPU_LITTLE_ENDIAN && CONFIG_POWER7_CPU)
	select CONFIG_HAVE_KPROBES
	select CONFIG_HAVE_ARCH_KGDB
	select CONFIG_HAVE_KRETPROBES
	select CONFIG_HAVE_ARCH_TRACEHOOK
	select CONFIG_HAVE_MEMBLOCK
	select CONFIG_HAVE_MEMBLOCK_NODE_MAP
	select CONFIG_HAVE_DMA_API_DEBUG
	select CONFIG_HAVE_OPROFILE
	select CONFIG_HAVE_DEBUG_KMEMLEAK
	select CONFIG_ARCH_HAS_SG_CHAIN
	select CONFIG_GENERIC_ATOMIC64 if CONFIG_PPC32
	select CONFIG_HAVE_PERF_EVENTS
	select CONFIG_HAVE_PERF_REGS
	select CONFIG_HAVE_PERF_USER_STACK_DUMP
	select CONFIG_HAVE_REGS_AND_STACK_ACCESS_API
	select CONFIG_HAVE_HW_BREAKPOINT if CONFIG_PERF_EVENTS && CONFIG_PPC_BOOK3S_64
	select CONFIG_ARCH_WANT_IPC_PARSE_VERSION
	select CONFIG_SPARSE_IRQ
	select CONFIG_IRQ_DOMAIN
	select CONFIG_GENERIC_IRQ_SHOW
	select CONFIG_GENERIC_IRQ_SHOW_LEVEL
	select CONFIG_IRQ_FORCED_THREADING
	select CONFIG_HAVE_RCU_TABLE_FREE if CONFIG_SMP
	select CONFIG_HAVE_SYSCALL_TRACEPOINTS
	select CONFIG_HAVE_CBPF_JIT if !CONFIG_PPC64
	select CONFIG_HAVE_EBPF_JIT if CONFIG_PPC64
	select CONFIG_HAVE_ARCH_JUMP_LABEL
	select CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG
	select CONFIG_ARCH_HAS_GCOV_PROFILE_ALL
	select CONFIG_GENERIC_SMP_IDLE_THREAD
	select CONFIG_GENERIC_CMOS_UPDATE
	select CONFIG_GENERIC_TIME_VSYSCALL_OLD
	select CONFIG_GENERIC_CLOCKEVENTS
	select CONFIG_GENERIC_CLOCKEVENTS_BROADCAST if CONFIG_SMP
	select CONFIG_ARCH_HAS_TICK_BROADCAST if CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
	select CONFIG_GENERIC_STRNCPY_FROM_USER
	select CONFIG_GENERIC_STRNLEN_USER
	select CONFIG_HAVE_MOD_ARCH_SPECIFIC
	select CONFIG_MODULES_USE_ELF_RELA
	select CONFIG_CLONE_BACKWARDS
	select CONFIG_ARCH_USE_BUILTIN_BSWAP
	select CONFIG_OLD_SIGSUSPEND
	select CONFIG_OLD_SIGACTION if CONFIG_PPC32
	select CONFIG_HAVE_DEBUG_STACKOVERFLOW
	select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK
	select CONFIG_ARCH_USE_CMPXCHG_LOCKREF if CONFIG_PPC64
	select CONFIG_HAVE_ARCH_AUDITSYSCALL
	select CONFIG_ARCH_SUPPORTS_ATOMIC_RMW
	select CONFIG_DCACHE_WORD_ACCESS if CONFIG_PPC64 && CONFIG_CPU_LITTLE_ENDIAN
	select CONFIG_NO_BOOTMEM
	select CONFIG_HAVE_GENERIC_RCU_GUP
	select CONFIG_HAVE_PERF_EVENTS_NMI if CONFIG_PPC64
	select CONFIG_HAVE_NMI if CONFIG_PERF_EVENTS
	select CONFIG_EDAC_SUPPORT
	select CONFIG_EDAC_ATOMIC_SCRUB
	select CONFIG_ARCH_HAS_DMA_SET_COHERENT_MASK
	select CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED
	select CONFIG_HAVE_ARCH_SECCOMP_FILTER
	select CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL
	select CONFIG_ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
	select CONFIG_HAVE_LIVEPATCH if CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS
	select CONFIG_GENERIC_CPU_AUTOPROBE
	select CONFIG_HAVE_VIRT_CPU_ACCOUNTING
	select CONFIG_ARCH_HAS_SCALED_CPUTIME if CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
	select CONFIG_HAVE_ARCH_HARDENED_USERCOPY
	select CONFIG_HAVE_KERNEL_GZIP

config CONFIG_GENERIC_CSUM
	def_bool CONFIG_CPU_LITTLE_ENDIAN

config CONFIG_EARLY_PRINTK
	bool
	default y

config CONFIG_PANIC_TIMEOUT
	int
	default 180

config CONFIG_COMPAT
	bool
	default y if CONFIG_PPC64
	select CONFIG_COMPAT_BINFMT_ELF
	select CONFIG_ARCH_WANT_OLD_COMPAT_IPC
	select CONFIG_COMPAT_OLD_SIGACTION

config CONFIG_SYSVIPC_COMPAT
	bool
	depends on CONFIG_COMPAT && CONFIG_SYSVIPC
	default y

# All PPC32s use generic nvram driver through ppc_md
config CONFIG_GENERIC_NVRAM
	bool
	default y if CONFIG_PPC32

config CONFIG_SCHED_OMIT_FRAME_POINTER
	bool
	default y

config CONFIG_ARCH_MAY_HAVE_PC_FDC
	bool
	default CONFIG_PCI

config CONFIG_PPC_UDBG_16550
	bool
	default n

config CONFIG_GENERIC_TBSYNC
	bool
	default y if CONFIG_PPC32 && CONFIG_SMP
	default n

config CONFIG_AUDIT_ARCH
	bool
	default y

config CONFIG_GENERIC_BUG
	bool
	default y
	depends on CONFIG_BUG

config CONFIG_SYS_SUPPORTS_APM_EMULATION
	default y if CONFIG_PMAC_APM_EMU
	bool

config CONFIG_EPAPR_BOOT
	bool
	help
	  Used to allow a board to specify it wants an ePAPR compliant wrapper.
	default n

config CONFIG_DEFAULT_UIMAGE
	bool
	help
	  Used to allow a board to specify it wants a uImage built by default
	default n

config CONFIG_ARCH_HIBERNATION_POSSIBLE
	bool
	default y

config CONFIG_ARCH_SUSPEND_POSSIBLE
	def_bool y
	depends on CONFIG_ADB_PMU || CONFIG_PPC_EFIKA || CONFIG_PPC_LITE5200 || CONFIG_PPC_83xx || \
		   (CONFIG_PPC_85xx && !CONFIG_PPC_E500MC) || CONFIG_PPC_86xx || CONFIG_PPC_PSERIES \
		   || CONFIG_44x || CONFIG_40x

config CONFIG_PPC_DCR_NATIVE
	bool
	default n

config CONFIG_PPC_DCR_MMIO
	bool
	default n

config CONFIG_PPC_DCR
	bool
	depends on CONFIG_PPC_DCR_NATIVE || CONFIG_PPC_DCR_MMIO
	default y

config CONFIG_PPC_OF_PLATFORM_PCI
	bool
	depends on CONFIG_PCI
	depends on CONFIG_PPC64 # not supported on 32 bits yet
	default n

config CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC
	depends on CONFIG_PPC32 || CONFIG_PPC_STD_MMU_64
	def_bool y

config CONFIG_ARCH_SUPPORTS_UPROBES
	def_bool y

config CONFIG_PPC_ADV_DEBUG_REGS
	bool
	depends on CONFIG_40x || CONFIG_BOOKE
	default y

config CONFIG_PPC_ADV_DEBUG_IACS
	int
	depends on CONFIG_PPC_ADV_DEBUG_REGS
	default 4 if CONFIG_44x
	default 2

config CONFIG_PPC_ADV_DEBUG_DACS
	int
	depends on CONFIG_PPC_ADV_DEBUG_REGS
	default 2

config CONFIG_PPC_ADV_DEBUG_DVCS
	int
	depends on CONFIG_PPC_ADV_DEBUG_REGS
	default 2 if CONFIG_44x
	default 0

config CONFIG_PPC_ADV_DEBUG_DAC_RANGE
	bool
	depends on CONFIG_PPC_ADV_DEBUG_REGS && CONFIG_44x
	default y

config CONFIG_PPC_EMULATE_SSTEP
	bool
	default y if CONFIG_KPROBES || CONFIG_UPROBES || CONFIG_XMON || CONFIG_HAVE_HW_BREAKPOINT

config CONFIG_ZONE_DMA32
	bool
	default y if CONFIG_PPC64

config CONFIG_PGTABLE_LEVELS
	int
	default 2 if !CONFIG_PPC64
	default 3 if CONFIG_PPC_64K_PAGES && !CONFIG_PPC_BOOK3S_64
	default 4

source "init/Kconfig"

source "kernel/Kconfig.freezer"

source "arch/powerpc/sysdev/Kconfig"
source "arch/powerpc/platforms/Kconfig"

menu "Kernel options"

config CONFIG_HIGHMEM
	bool "High memory support"
	depends on CONFIG_PPC32

source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "fs/Kconfig.binfmt"

config CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
	bool
	depends on CONFIG_HUGETLB_PAGE
	default y

config CONFIG_MATH_EMULATION
	bool "Math emulation"
	depends on CONFIG_4xx || CONFIG_8xx || CONFIG_PPC_MPC832x || CONFIG_BOOKE
	---help---
	  Some PowerPC chips designed for embedded applications do not have
	  a floating-point unit and therefore do not implement the
	  floating-point instructions in the PowerPC instruction set.  If you
	  say Y here, the kernel will include code to emulate a floating-point
	  unit, which will allow programs that use floating-point
	  instructions to run.

	  This is also useful to emulate missing (optional) instructions
	  such as fsqrt on cores that do have an CONFIG_FPU but do not implement
	  them (such as Freescale BookE).

choice
	prompt "Math emulation options"
	default CONFIG_MATH_EMULATION_FULL
	depends on CONFIG_MATH_EMULATION

config	CONFIG_MATH_EMULATION_FULL
	bool "Emulate all the floating point instructions"
	---help---
	  Select this option will enable the kernel to support to emulate
	  all the floating point instructions. If your SoC doesn't have
	  a CONFIG_FPU, you should select this.

config CONFIG_MATH_EMULATION_HW_UNIMPLEMENTED
	bool "Just emulate the FPU unimplemented instructions"
	---help---
	  Select this if you know there does have a hardware CONFIG_FPU on your
	  SoC, but some floating point instructions are not implemented by that.

endchoice

config CONFIG_PPC_TRANSACTIONAL_MEM
       bool "Transactional Memory support for POWERPC"
       depends on CONFIG_PPC_BOOK3S_64
       depends on CONFIG_SMP
       select CONFIG_ALTIVEC
       select CONFIG_VSX
       default n
       ---help---
         Support user-mode Transactional Memory on POWERPC.

config CONFIG_DISABLE_MPROFILE_KERNEL
	bool "Disable use of mprofile-kernel for kernel tracing"
	depends on CONFIG_PPC64 && CONFIG_CPU_LITTLE_ENDIAN
	default y
	help
	  Selecting this options disables use of the mprofile-kernel ABI for
	  kernel tracing. That will cause options such as live patching
	  (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
	  be disabled also.

	  If you have a toolchain which supports mprofile-kernel, then you can
	  enable this. Otherwise leave it disabled. If you're not sure, say
	  "N".

config CONFIG_MPROFILE_KERNEL
	depends on CONFIG_PPC64 && CONFIG_CPU_LITTLE_ENDIAN
	def_bool !CONFIG_DISABLE_MPROFILE_KERNEL

config CONFIG_USE_THIN_ARCHIVES
	bool "Build the kernel using thin archives"
	default n
	select CONFIG_THIN_ARCHIVES
	help
	  Build the kernel using thin archives.
	  If you're unsure say N.

config CONFIG_IOMMU_HELPER
	def_bool CONFIG_PPC64

config CONFIG_SWIOTLB
	bool "SWIOTLB support"
	default n
	select CONFIG_IOMMU_HELPER
	---help---
	  Support for IO bounce buffering for systems without an IOMMU.
	  This allows us to DMA to the full physical address space on
	  platforms where the size of a physical address is larger
	  than the bus address.  Not all platforms support this.

config CONFIG_HOTPLUG_CPU
	bool "Support for enabling/disabling CPUs"
	depends on CONFIG_SMP && (CONFIG_PPC_PSERIES || \
	CONFIG_PPC_PMAC || CONFIG_PPC_POWERNV || CONFIG_FSL_SOC_BOOKE)
	---help---
	  Say Y here to be able to disable and re-enable individual
	  CPUs at runtime on CONFIG_SMP machines.

	  Say N if you are unsure.

config CONFIG_ARCH_CPU_PROBE_RELEASE
	def_bool y
	depends on CONFIG_HOTPLUG_CPU

config CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG
	def_bool y

config CONFIG_ARCH_HAS_WALK_MEMORY
	def_bool y

config CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE
	def_bool y

config CONFIG_PPC64_SUPPORTS_MEMORY_FAILURE
	bool "Add support for memory hwpoison"
	depends on CONFIG_PPC_BOOK3S_64
	default "y" if CONFIG_PPC_POWERNV
	select CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE

config CONFIG_KEXEC
	bool "kexec system call"
	depends on (CONFIG_PPC_BOOK3S || CONFIG_FSL_BOOKE || (CONFIG_44x && !CONFIG_SMP)) || CONFIG_PPC_BOOK3E
	select CONFIG_KEXEC_CORE
	help
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
	  but it is independent of the system firmware.   And like a reboot
	  you can start any kernel with it, not just Linux.

	  The name comes from the similarity to the exec system call.

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
	  initially work for you.  As of this writing the exact hardware
	  interface is strongly in flux, so no good recommendation can be
	  made.

config CONFIG_KEXEC_FILE
	bool "kexec file based system call"
	select CONFIG_KEXEC_CORE
	select CONFIG_HAVE_IMA_KEXEC
	select CONFIG_BUILD_BIN2C
	depends on CONFIG_PPC64
	depends on CONFIG_CRYPTO=y
	depends on CONFIG_CRYPTO_SHA256=y
	help
	  This is a new version of the kexec system call. This call is
	  file based and takes in file descriptors as system call arguments
	  for kernel and initramfs as opposed to a list of segments as is the
	  case for the older kexec call.

config CONFIG_RELOCATABLE
	bool "Build a relocatable kernel"
	depends on (CONFIG_PPC64 && !CONFIG_COMPILE_TEST) || (CONFIG_FLATMEM && (CONFIG_44x || CONFIG_FSL_BOOKE))
	select CONFIG_NONSTATIC_KERNEL
	select CONFIG_MODULE_REL_CRCS if CONFIG_MODVERSIONS
	help
	  This builds a kernel image that is capable of running at the
	  location the kernel is loaded at. For ppc32, there is no any
	  alignment restrictions, and this feature is a superset of
	  CONFIG_DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
	  16k-aligned base address. The kernel is linked as a
	  position-independent executable (PIE) and contains dynamic relocations
	  which are processed early in the bootup process.

	  One use is for the kexec on panic case where the recovery kernel
	  must live at a different physical address than the primary
	  kernel.

	  Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
	  it has been loaded at and the compile time physical addresses
	  CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
	  setting can still be useful to bootwrappers that need to know the
	  load address of the kernel (eg. u-boot/mkimage).

config CONFIG_RELOCATABLE_TEST
	bool "Test relocatable kernel"
	depends on (CONFIG_PPC64 && CONFIG_RELOCATABLE)
	default n
	help
	  This runs the relocatable kernel at the address it was initially
	  loaded at, which tends to be non-zero and therefore test the
	  relocation code.

config CONFIG_CRASH_DUMP
	bool "Build a kdump crash kernel"
	depends on CONFIG_PPC64 || CONFIG_6xx || CONFIG_FSL_BOOKE || (CONFIG_44x && !CONFIG_SMP)
	select CONFIG_RELOCATABLE if (CONFIG_PPC64 && !CONFIG_COMPILE_TEST) || CONFIG_44x || CONFIG_FSL_BOOKE
	help
	  Build a kernel suitable for use as a kdump capture kernel.
	  The same kernel binary can be used as production kernel and dump
	  capture kernel.

config CONFIG_FA_DUMP
	bool "Firmware-assisted dump"
	depends on CONFIG_PPC64 && CONFIG_PPC_RTAS && CONFIG_CRASH_DUMP && CONFIG_KEXEC_CORE
	help
	  CONFIG_A robust mechanism to get reliable kernel crash dump with
	  assistance from firmware. This approach does not use kexec,
	  instead firmware assists in booting the kdump kernel
	  while preserving memory contents. Firmware-assisted dump
	  is meant to be a kdump replacement offering robustness and
	  speed not possible without system firmware assistance.

	  If unsure, say "N"

config CONFIG_IRQ_ALL_CPUS
	bool "Distribute interrupts on all CPUs by default"
	depends on CONFIG_SMP
	help
	  This option gives the kernel permission to distribute IRQs across
	  multiple CPUs.  Saying N here will route all IRQs to the first
	  CPU.  Generally saying Y is safe, although some problems have been
	  reported with CONFIG_SMP Power Macintoshes with this option enabled.

config CONFIG_NUMA
	bool "NUMA support"
	depends on CONFIG_PPC64
	default y if CONFIG_SMP && CONFIG_PPC_PSERIES

config CONFIG_NODES_SHIFT
	int
	default "8" if CONFIG_PPC64
	default "4"
	depends on CONFIG_NEED_MULTIPLE_NODES

config CONFIG_USE_PERCPU_NUMA_NODE_ID
	def_bool y
	depends on CONFIG_NUMA

config CONFIG_HAVE_MEMORYLESS_NODES
	def_bool y
	depends on CONFIG_NUMA

config CONFIG_ARCH_SELECT_MEMORY_MODEL
	def_bool y
	depends on CONFIG_PPC64

config CONFIG_ARCH_FLATMEM_ENABLE
	def_bool y
	depends on (CONFIG_PPC64 && !CONFIG_NUMA) || CONFIG_PPC32

config CONFIG_ARCH_SPARSEMEM_ENABLE
	def_bool y
	depends on CONFIG_PPC64
	select CONFIG_SPARSEMEM_VMEMMAP_ENABLE

config CONFIG_ARCH_SPARSEMEM_DEFAULT
	def_bool y
	depends on (CONFIG_SMP && CONFIG_PPC_PSERIES) || CONFIG_PPC_PS3

config CONFIG_SYS_SUPPORTS_HUGETLBFS
	bool

config CONFIG_ILLEGAL_POINTER_VALUE
	hex
	# This is roughly half way between the top of user space and the bottom
	# of kernel space, which seems about as good as we can get.
	default 0x5deadbeef0000000 if CONFIG_PPC64
	default 0

source "mm/Kconfig"

config CONFIG_ARCH_MEMORY_PROBE
	def_bool y
	depends on CONFIG_MEMORY_HOTPLUG

# Some CONFIG_NUMA nodes have memory ranges that span
# other nodes.  Even though a pfn is valid and
# between a node's start and end pfns, it may not
# reside on that node.  See memmap_init_zone()
# for details.
config CONFIG_NODES_SPAN_OTHER_NODES
	def_bool y
	depends on CONFIG_NEED_MULTIPLE_NODES

config CONFIG_STDBINUTILS
	bool "Using standard binutils settings"
	depends on CONFIG_44x
	default y
	help
	  Turning this option off allows you to select 256KB PAGE_SIZE on CONFIG_44x.
	  Note, that kernel will be able to run only those applications,
	  which had been compiled using binutils later than 2.17.50.0.3 with
	  '-zmax-page-size' set to 256K (the default is 64K). Or, if using
	  the older binutils, you can patch them with a trivial patch, which
	  changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.

choice
	prompt "Page size"
	default CONFIG_PPC_4K_PAGES
	help
	  Select the kernel logical page size. Increasing the page size
	  will reduce software overhead at each page boundary, allow
	  hardware prefetch mechanisms to be more effective, and allow
	  larger dma transfers increasing IO efficiency and reducing
	  overhead. However the utilization of memory will increase.
	  For example, each cached file will using a multiple of the
	  page size to hold its contents and the difference between the
	  end of file and the end of page is wasted.

	  Some dedicated systems, such as software raid serving with
	  accelerated calculations, have shown significant increases.

	  If you configure a 64 bit kernel for 64k pages but the
	  processor does not support them, then the kernel will simulate
	  them with 4k pages, loading them on demand, but with the
	  reduced software overhead and larger internal fragmentation.
	  For the 32 bit kernel, a large page option will not be offered
	  unless it is supported by the configured processor.

	  If unsure, choose 4K_PAGES.

config CONFIG_PPC_4K_PAGES
	bool "4k page size"
	select CONFIG_HAVE_ARCH_SOFT_DIRTY if CONFIG_PPC_BOOK3S_64

config CONFIG_PPC_16K_PAGES
	bool "16k page size"
	depends on CONFIG_44x || CONFIG_PPC_8xx

config CONFIG_PPC_64K_PAGES
	bool "64k page size"
	depends on !CONFIG_PPC_FSL_BOOK3E && (CONFIG_44x || CONFIG_PPC_STD_MMU_64 || CONFIG_PPC_BOOK3E_64)
	select CONFIG_HAVE_ARCH_SOFT_DIRTY if CONFIG_PPC_BOOK3S_64

config CONFIG_PPC_256K_PAGES
	bool "256k page size"
	depends on CONFIG_44x && !CONFIG_STDBINUTILS
	help
	  Make the page size 256k.

	  As the ELF standard only requires alignment to support page
	  sizes up to 64k, you will need to compile all of your user
	  space applications with a non-standard binutils settings
	  (see the CONFIG_STDBINUTILS description for details).

	  Say N unless you know what you are doing.

endchoice

config CONFIG_FORCE_MAX_ZONEORDER
	int "Maximum zone order"
	range 8 9 if CONFIG_PPC64 && CONFIG_PPC_64K_PAGES
	default "9" if CONFIG_PPC64 && CONFIG_PPC_64K_PAGES
	range 13 13 if CONFIG_PPC64 && !CONFIG_PPC_64K_PAGES
	default "13" if CONFIG_PPC64 && !CONFIG_PPC_64K_PAGES
	range 9 64 if CONFIG_PPC32 && CONFIG_PPC_16K_PAGES
	default "9" if CONFIG_PPC32 && CONFIG_PPC_16K_PAGES
	range 7 64 if CONFIG_PPC32 && CONFIG_PPC_64K_PAGES
	default "7" if CONFIG_PPC32 && CONFIG_PPC_64K_PAGES
	range 5 64 if CONFIG_PPC32 && CONFIG_PPC_256K_PAGES
	default "5" if CONFIG_PPC32 && CONFIG_PPC_256K_PAGES
	range 11 64
	default "11"
	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.

	  The page size is not necessarily 4KB.  For example, on 64-bit
	  systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
	  this in mind when choosing a value for this option.

config CONFIG_PPC_SUBPAGE_PROT
	bool "Support setting protections for 4k subpages"
	depends on CONFIG_PPC_STD_MMU_64 && CONFIG_PPC_64K_PAGES
	help
	  This option adds support for a system call to allow user programs
	  to set access permissions (read/write, readonly, or no access)
	  on the 4k subpages of each 64k page.

config CONFIG_PPC_COPRO_BASE
	bool
	default n

config CONFIG_SCHED_SMT
	bool "SMT (Hyperthreading) scheduler support"
	depends on CONFIG_PPC64 && CONFIG_SMP
	help
	  SMT scheduler support improves the CPU scheduler's decision making
	  when dealing with POWER5 cpus at a cost of slightly increased
	  overhead in some places. If unsure say N here.

config CONFIG_PPC_DENORMALISATION
	bool "PowerPC denormalisation exception handling"
	depends on CONFIG_PPC_BOOK3S_64
	default "y" if CONFIG_PPC_POWERNV
	---help---
	  Add support for handling denormalisation of single precision
	  values.  Useful for bare metal only.  If unsure say Y here.

config CONFIG_CMDLINE_BOOL
	bool "Default bootloader kernel arguments"

config CONFIG_CMDLINE
	string "Initial kernel command string"
	depends on CONFIG_CMDLINE_BOOL
	default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
	help
	  On some platforms, there is currently no way for the boot loader to
	  pass arguments to the kernel. For these platforms, you can supply
	  some command-line options at build time by entering them here.  In
	  most cases you will need to specify the root device here.

config CONFIG_CMDLINE_FORCE
	bool "Always use the default kernel command string"
	depends on CONFIG_CMDLINE_BOOL
	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 CONFIG_EXTRA_TARGETS
	string "Additional default image types"
	help
	  List additional targets to be built by the bootwrapper here (separated
	  by spaces).  This is useful for targets that depend of device tree
	  files in the .dts directory.

	  Targets in this list will be build as part of the default build
	  target, or when the user does a 'make zImage' or a
	  'make zImage.initrd'.

	  If unsure, leave blank

config CONFIG_ARCH_WANTS_FREEZER_CONTROL
	def_bool y
	depends on CONFIG_ADB_PMU

source kernel/power/Kconfig

config CONFIG_SECCOMP
	bool "Enable seccomp to safely compute untrusted bytecode"
	depends on CONFIG_PROC_FS
	default y
	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 /proc/<pid>/seccomp, it cannot be disabled
	  and the task is only allowed to execute a few safe syscalls
	  defined by each seccomp mode.

	  If unsure, say Y. Only embedded should say N here.

endmenu

config CONFIG_ISA_DMA_API
	bool
	default CONFIG_PCI

menu "Bus options"

config CONFIG_ISA
	bool "Support for ISA-bus hardware"
	depends on CONFIG_PPC_CHRP
	select CONFIG_PPC_I8259
	help
	  Find out whether you have CONFIG_ISA slots on your motherboard.  CONFIG_ISA is the
	  name of a bus system, i.e. the way the CPU talks to the other stuff
	  inside your box.  If you have an Apple machine, say N here; if you
	  have an IBM RS/6000 or pSeries machine, say Y.  If you have an
	  embedded board, consult your board documentation.

config CONFIG_ZONE_DMA
	bool
	default y

config CONFIG_NEED_DMA_MAP_STATE
	def_bool (CONFIG_PPC64 || CONFIG_NOT_COHERENT_CACHE)

config CONFIG_NEED_SG_DMA_LENGTH
	def_bool y

config CONFIG_GENERIC_ISA_DMA
	bool
	depends on CONFIG_ISA_DMA_API
	default y

config CONFIG_PPC_INDIRECT_PCI
	bool
	depends on CONFIG_PCI
	default y if CONFIG_40x || CONFIG_44x
	default n

config CONFIG_EISA
	bool

config CONFIG_SBUS
	bool

config CONFIG_FSL_SOC
	bool

config CONFIG_FSL_PCI
 	bool
	select CONFIG_PPC_INDIRECT_PCI
	select CONFIG_PCI_QUIRKS

config CONFIG_FSL_PMC
	bool
	default y
	depends on CONFIG_SUSPEND && (CONFIG_PPC_85xx || CONFIG_PPC_86xx)
	help
	  Freescale MPC85xx/MPC86xx power management controller support
	  (suspend/resume). For MPC83xx see platforms/83xx/suspend.c

config CONFIG_PPC4xx_CPM
	bool
	default y
	depends on CONFIG_SUSPEND && (CONFIG_44x || CONFIG_40x)
	help
	  PPC4xx Clock Power Management (CONFIG_CPM) support (suspend/resume).
	  It also enables support for two different idle states (idle-wait
	  and idle-doze).

config CONFIG_4xx_SOC
	bool

config CONFIG_FSL_LBC
	bool "Freescale Local Bus support"
	help
	  Enables reporting of errors from the Freescale local bus
	  controller.  Also contains some common code used by
	  drivers for specific local bus peripherals.

config CONFIG_FSL_GTM
	bool
	depends on CONFIG_PPC_83xx || CONFIG_QUICC_ENGINE || CONFIG_CPM2
	help
	  Freescale General-purpose Timers support

# Yes CONFIG_MCA RS/6000s exist but Linux-CONFIG_PPC does not currently support any
config CONFIG_MCA
	bool

# Platforms that what CONFIG_PCI turned unconditionally just do select CONFIG_PCI
# in their config node.  Platforms that want to choose at config
# time should select CONFIG_PPC_PCI_CHOICE
config CONFIG_PPC_PCI_CHOICE
	bool

config CONFIG_PCI
	bool "PCI support" if CONFIG_PPC_PCI_CHOICE
	default y if !CONFIG_40x && !CONFIG_CPM2 && !CONFIG_8xx && !CONFIG_PPC_83xx \
		&& !CONFIG_PPC_85xx && !CONFIG_PPC_86xx && !CONFIG_GAMECUBE_COMMON
	default CONFIG_PCI_QSPAN if !CONFIG_4xx && !CONFIG_CPM2 && CONFIG_8xx
	select CONFIG_GENERIC_PCI_IOMAP
	help
	  Find out whether your system includes a CONFIG_PCI bus. CONFIG_PCI is the name of
	  a bus system, i.e. the way the CPU talks to the other stuff inside
	  your box.  If you say Y here, the kernel will include drivers and
	  infrastructure code to support CONFIG_PCI bus devices.

config CONFIG_PCI_DOMAINS
	def_bool CONFIG_PCI

config CONFIG_PCI_SYSCALL
	def_bool CONFIG_PCI

config CONFIG_PCI_QSPAN
	bool "QSpan PCI"
	depends on !CONFIG_4xx && !CONFIG_CPM2 && CONFIG_8xx
	select CONFIG_PPC_I8259
	help
	  Say Y here if you have a system based on a Motorola CONFIG_8xx-series
	  embedded processor with a QSPAN CONFIG_PCI interface, otherwise say N.

config CONFIG_PCI_8260
	bool
	depends on CONFIG_PCI && CONFIG_8260
	select CONFIG_PPC_INDIRECT_PCI
	default y

source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

config CONFIG_HAS_RAPIDIO
	bool
	default n

config CONFIG_RAPIDIO
	tristate "RapidIO support"
	depends on CONFIG_HAS_RAPIDIO || CONFIG_PCI
	help
	  If you say Y here, the kernel will include drivers and
	  infrastructure code to support RapidIO interconnect devices.

config CONFIG_FSL_RIO
	bool "Freescale Embedded SRIO Controller support"
	depends on CONFIG_RAPIDIO = y && CONFIG_HAS_RAPIDIO
	default "n"
	---help---
	  Include support for RapidIO controller on Freescale embedded
	  processors (MPC8548, CONFIG_MPC8641, etc).

source "drivers/rapidio/Kconfig"

endmenu

config CONFIG_NONSTATIC_KERNEL
	bool
	default n

menu "Advanced setup"
	depends on CONFIG_PPC32

config CONFIG_ADVANCED_OPTIONS
	bool "Prompt for advanced kernel configuration options"
	help
	  This option will enable prompting for a variety of advanced kernel
	  configuration options.  These options can cause the kernel to not
	  work if they are set incorrectly, but can be used to optimize certain
	  aspects of kernel memory management.

	  Unless you know what you are doing, say N here.

comment "Default settings for advanced configuration options are used"
	depends on !CONFIG_ADVANCED_OPTIONS

config CONFIG_LOWMEM_SIZE_BOOL
	bool "Set maximum low memory"
	depends on CONFIG_ADVANCED_OPTIONS
	help
	  This option allows you to set the maximum amount of memory which
	  will be used as "low memory", that is, memory which the kernel can
	  access directly, without having to set up a kernel virtual mapping.
	  This can be useful in optimizing the layout of kernel virtual
	  memory.

	  Say N here unless you know what you are doing.

config CONFIG_LOWMEM_SIZE
	hex "Maximum low memory size (in bytes)" if CONFIG_LOWMEM_SIZE_BOOL
	default "0x30000000"

config CONFIG_LOWMEM_CAM_NUM_BOOL
	bool "Set number of CAMs to use to map low memory"
	depends on CONFIG_ADVANCED_OPTIONS && CONFIG_FSL_BOOKE
	help
	  This option allows you to set the maximum number of CAM slots that
	  will be used to map low memory.  There are a limited number of slots
	  available and even more limited number that will fit in the L1 CONFIG_MMU.
	  However, using more entries will allow mapping more low memory.  This
	  can be useful in optimizing the layout of kernel virtual memory.

	  Say N here unless you know what you are doing.

config CONFIG_LOWMEM_CAM_NUM
	depends on CONFIG_FSL_BOOKE
	int "Number of CAMs to use to map low memory" if CONFIG_LOWMEM_CAM_NUM_BOOL
	default 3

config CONFIG_DYNAMIC_MEMSTART
	bool "Enable page aligned dynamic load address for kernel"
	depends on CONFIG_ADVANCED_OPTIONS && CONFIG_FLATMEM && (CONFIG_FSL_BOOKE || CONFIG_44x)
	select CONFIG_NONSTATIC_KERNEL
	help
	  This option enables the kernel to be loaded at any page aligned
	  physical address. The kernel creates a mapping from CONFIG_KERNELBASE to 
	  the address where the kernel is loaded. The page size here implies
	  the TLB page size of the mapping for kernel on the particular platform.
	  Please refer to the init code for finding the TLB page size.

	  CONFIG_DYNAMIC_MEMSTART is an easy way of implementing pseudo-CONFIG_RELOCATABLE
	  kernel image, where the only restriction is the page aligned kernel
	  load address. When this option is enabled, the compile time physical 
	  address CONFIG_PHYSICAL_START is ignored.

	  This option is overridden by CONFIG_RELOCATABLE

config CONFIG_PAGE_OFFSET_BOOL
	bool "Set custom page offset address"
	depends on CONFIG_ADVANCED_OPTIONS
	help
	  This option allows you to set the kernel virtual address at which
	  the kernel will map low memory.  This can be useful in optimizing
	  the virtual memory layout of the system.

	  Say N here unless you know what you are doing.

config CONFIG_PAGE_OFFSET
	hex "Virtual address of memory base" if CONFIG_PAGE_OFFSET_BOOL
	default "0xc0000000"

config CONFIG_KERNEL_START_BOOL
	bool "Set custom kernel base address"
	depends on CONFIG_ADVANCED_OPTIONS
	help
	  This option allows you to set the kernel virtual address at which
	  the kernel will be loaded.  Normally this should match CONFIG_PAGE_OFFSET
	  however there are times (like kdump) that one might not want them
	  to be the same.

	  Say N here unless you know what you are doing.

config CONFIG_KERNEL_START
	hex "Virtual address of kernel base" if CONFIG_KERNEL_START_BOOL
	default CONFIG_PAGE_OFFSET if CONFIG_PAGE_OFFSET_BOOL
	default "0xc2000000" if CONFIG_CRASH_DUMP && !CONFIG_NONSTATIC_KERNEL
	default "0xc0000000"

config CONFIG_PHYSICAL_START_BOOL
	bool "Set physical address where the kernel is loaded"
	depends on CONFIG_ADVANCED_OPTIONS && CONFIG_FLATMEM && CONFIG_FSL_BOOKE
	help
	  This gives the physical address where the kernel is loaded.

	  Say N here unless you know what you are doing.

config CONFIG_PHYSICAL_START
	hex "Physical address where the kernel is loaded" if CONFIG_PHYSICAL_START_BOOL
	default "0x02000000" if CONFIG_PPC_STD_MMU && CONFIG_CRASH_DUMP && !CONFIG_NONSTATIC_KERNEL
	default "0x00000000"

config CONFIG_PHYSICAL_ALIGN
	hex
	default "0x04000000" if CONFIG_FSL_BOOKE
	help
	  This value puts the alignment restrictions on physical address
	  where kernel is loaded and run from. Kernel is compiled for an
	  address which meets above alignment restriction.

config CONFIG_TASK_SIZE_BOOL
	bool "Set custom user task size"
	depends on CONFIG_ADVANCED_OPTIONS
	help
	  This option allows you to set the amount of virtual address space
	  allocated to user tasks.  This can be useful in optimizing the
	  virtual memory layout of the system.

	  Say N here unless you know what you are doing.

config CONFIG_TASK_SIZE
	hex "Size of user task space" if CONFIG_TASK_SIZE_BOOL
	default "0x80000000" if CONFIG_PPC_8xx
	default "0xc0000000"

config CONFIG_CONSISTENT_SIZE_BOOL
	bool "Set custom consistent memory pool size"
	depends on CONFIG_ADVANCED_OPTIONS && CONFIG_NOT_COHERENT_CACHE
	help
	  This option allows you to set the size of the
	  consistent memory pool.  This pool of virtual memory
	  is used to make consistent memory allocations.

config CONFIG_CONSISTENT_SIZE
	hex "Size of consistent memory pool" if CONFIG_CONSISTENT_SIZE_BOOL
	default "0x00200000" if CONFIG_NOT_COHERENT_CACHE

config CONFIG_PIN_TLB
	bool "Pinned Kernel TLBs (860 ONLY)"
	depends on CONFIG_ADVANCED_OPTIONS && CONFIG_8xx

config CONFIG_PIN_TLB_IMMR
	bool "Pinned TLB for IMMR"
	depends on CONFIG_PIN_TLB
	default y
endmenu

if CONFIG_PPC64
# This value must have zeroes in the bottom 60 bits otherwise lots will break
config CONFIG_PAGE_OFFSET
	hex
	default "0xc000000000000000"
config CONFIG_KERNEL_START
	hex
	default "0xc000000000000000"
config CONFIG_PHYSICAL_START
	hex
	default "0x00000000"
endif

config	CONFIG_ARCH_RANDOM
	def_bool n

source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "lib/Kconfig"

source "arch/powerpc/Kconfig.debug"

source "security/Kconfig"

config CONFIG_KEYS_COMPAT
	bool
	depends on CONFIG_COMPAT && CONFIG_KEYS
	default y

source "crypto/Kconfig"

config CONFIG_PPC_LIB_RHEAP
	bool

source "arch/powerpc/kvm/Kconfig"

source "kernel/livepatch/Kconfig"