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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
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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"
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.
depends on SMP && (DEBUGGER || KEXEC_CORE || HARDLOCKUP_DETECTOR)
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
Benjamin Herrenschmidt
committed
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_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
Kirill A. Shutemov
committed
select HAVE_GENERIC_GUP
select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
select HAVE_IRQ_EXIT_ON_IRQ_STACK
select HAVE_KERNEL_GZIP
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