Kconfig

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

config PPC32
	bool
	default y if !PPC64

config 32BIT
	bool
	default y if PPC32

config 64BIT
	bool
	default y if PPC64

config ARCH_PHYS_ADDR_T_64BIT
       def_bool PPC64 || PHYS_64BIT

config ARCH_DMA_ADDR_T_64BIT
	def_bool ARCH_PHYS_ADDR_T_64BIT

config MMU
	bool
	default y

config ARCH_MMAP_RND_BITS_MAX
	# On Book3S 64, the default virtual address space for 64-bit processes
	# is 2^47 (128TB). As a maximum, allow randomisation to consume up to
	# 32T of address space (2^45), which should ensure a reasonable gap
	# between bottom-up and top-down allocations for applications that
	# consume "normal" amounts of address space. Book3S 64 only supports 64K
	# and 4K page sizes.
	default 29 if PPC_BOOK3S_64 && PPC_64K_PAGES # 29 = 45 (32T) - 16 (64K)
	default 33 if PPC_BOOK3S_64		     # 33 = 45 (32T) - 12 (4K)
	#
	# On all other 64-bit platforms (currently only Book3E), the virtual
	# address space is 2^46 (64TB). Allow randomisation to consume up to 16T
	# of address space (2^44). Only 4K page sizes are supported.
	default 32 if 64BIT	# 32 = 44 (16T) - 12 (4K)
	#
	# For 32-bit, use the compat values, as they're the same.
	default ARCH_MMAP_RND_COMPAT_BITS_MAX

config ARCH_MMAP_RND_BITS_MIN
	# Allow randomisation to consume up to 1GB of address space (2^30).
	default 14 if 64BIT && PPC_64K_PAGES	# 14 = 30 (1GB) - 16 (64K)
	default 18 if 64BIT			# 18 = 30 (1GB) - 12 (4K)
	#
	# For 32-bit, use the compat values, as they're the same.
	default ARCH_MMAP_RND_COMPAT_BITS_MIN

config ARCH_MMAP_RND_COMPAT_BITS_MAX
	# Total virtual address space for 32-bit processes is 2^31 (2GB).
	# Allow randomisation to consume up to 512MB of address space (2^29).
	default 11 if PPC_256K_PAGES	# 11 = 29 (512MB) - 18 (256K)
	default 13 if PPC_64K_PAGES	# 13 = 29 (512MB) - 16 (64K)
	default 15 if PPC_16K_PAGES 	# 15 = 29 (512MB) - 14 (16K)
	default 17			# 17 = 29 (512MB) - 12 (4K)

config ARCH_MMAP_RND_COMPAT_BITS_MIN
	# Total virtual address space for 32-bit processes is 2^31 (2GB).
	# Allow randomisation to consume up to 8MB of address space (2^23).
	default 5 if PPC_256K_PAGES	#  5 = 23 (8MB) - 18 (256K)
	default 7 if PPC_64K_PAGES	#  7 = 23 (8MB) - 16 (64K)
	default 9 if PPC_16K_PAGES	#  9 = 23 (8MB) - 14 (16K)
	default 11			# 11 = 23 (8MB) - 12 (4K)

config HAVE_SETUP_PER_CPU_AREA
	def_bool PPC64

config NEED_PER_CPU_EMBED_FIRST_CHUNK
	def_bool PPC64

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 NMI_IPI
	bool
	depends on SMP && (DEBUGGER || KEXEC_CORE || HARDLOCKUP_DETECTOR)
	default y

config PPC_WATCHDOG
	bool
	depends on HARDLOCKUP_DETECTOR
	depends on HAVE_HARDLOCKUP_DETECTOR_ARCH
	default y
	help
	  This is a placeholder when the powerpc hardlockup detector
	  watchdog is selected (arch/powerpc/kernel/watchdog.c). It is
	  seleted via the generic lockup detector menu which is why we
	  have no standalone config option for it here.

config STACKTRACE_SUPPORT
	bool
	default y

config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

config LOCKDEP_SUPPORT
	bool
	default y

config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

config GENERIC_HWEIGHT
	bool
	default y

config ARCH_HAS_DMA_SET_COHERENT_MASK
        bool

config PPC
	bool
	default y
	#
	# Please keep this list sorted alphabetically.
	#
	select ARCH_HAS_DEVMEM_IS_ALLOWED
	select ARCH_HAS_DMA_SET_COHERENT_MASK
	select ARCH_HAS_ELF_RANDOMIZE
	select ARCH_HAS_FORTIFY_SOURCE
	select ARCH_HAS_GCOV_PROFILE_ALL
	select ARCH_HAS_SCALED_CPUTIME		if VIRT_CPU_ACCOUNTING_NATIVE
	select ARCH_HAS_SG_CHAIN
	select ARCH_HAS_TICK_BROADCAST		if GENERIC_CLOCKEVENTS_BROADCAST
	select ARCH_HAS_UBSAN_SANITIZE_ALL
	select ARCH_HAS_ZONE_DEVICE		if PPC_BOOK3S_64
	select ARCH_HAVE_NMI_SAFE_CMPXCHG
	select ARCH_MIGHT_HAVE_PC_PARPORT
	select ARCH_MIGHT_HAVE_PC_SERIO
	select ARCH_SUPPORTS_ATOMIC_RMW
	select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
	select ARCH_USE_BUILTIN_BSWAP
	select ARCH_USE_CMPXCHG_LOCKREF		if PPC64
	select ARCH_WANT_IPC_PARSE_VERSION
	select ARCH_WEAK_RELEASE_ACQUIRE
	select BINFMT_ELF
	select BUILDTIME_EXTABLE_SORT
	select CLONE_BACKWARDS
	select DCACHE_WORD_ACCESS		if PPC64 && CPU_LITTLE_ENDIAN
	select EDAC_ATOMIC_SCRUB
	select EDAC_SUPPORT
	select GENERIC_ATOMIC64			if PPC32
	select GENERIC_CLOCKEVENTS
	select GENERIC_CLOCKEVENTS_BROADCAST	if SMP
	select GENERIC_CMOS_UPDATE
	select GENERIC_CPU_AUTOPROBE
	select GENERIC_IRQ_SHOW
	select GENERIC_IRQ_SHOW_LEVEL
	select GENERIC_SMP_IDLE_THREAD
	select GENERIC_STRNCPY_FROM_USER
	select GENERIC_STRNLEN_USER
	select GENERIC_TIME_VSYSCALL
	select HAVE_ARCH_AUDITSYSCALL
	select HAVE_ARCH_JUMP_LABEL
	select HAVE_ARCH_KGDB
	select HAVE_ARCH_MMAP_RND_BITS
	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
	select HAVE_ARCH_SECCOMP_FILTER
	select HAVE_ARCH_TRACEHOOK
	select ARCH_HAS_STRICT_KERNEL_RWX	if (PPC_BOOK3S_64 && !RELOCATABLE && !HIBERNATION)
	select ARCH_OPTIONAL_KERNEL_RWX		if ARCH_HAS_STRICT_KERNEL_RWX
	select HAVE_CBPF_JIT			if !PPC64
	select HAVE_CONTEXT_TRACKING		if PPC64
	select HAVE_DEBUG_KMEMLEAK
	select HAVE_DEBUG_STACKOVERFLOW
	select HAVE_DMA_API_DEBUG
	select HAVE_DYNAMIC_FTRACE
	select HAVE_DYNAMIC_FTRACE_WITH_REGS	if MPROFILE_KERNEL
	select HAVE_EBPF_JIT			if PPC64
	select HAVE_EFFICIENT_UNALIGNED_ACCESS	if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_FUNCTION_TRACER
	select HAVE_GCC_PLUGINS
	select HAVE_GENERIC_GUP
	select HAVE_HW_BREAKPOINT		if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
	select HAVE_IDE
	select HAVE_IOREMAP_PROT
	select HAVE_IRQ_EXIT_ON_IRQ_STACK
	select HAVE_KERNEL_GZIP
	select HAVE_KPROBES