path: root/arch/powerpc/Kconfig

# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux/PowerPC Kernel Configuration"

config PPC64
	bool "64-bit kernel"
	default n
	help
	  This option selects whether a 32-bit or a 64-bit kernel
	  will be built.

config PPC32
	bool
	default y if !PPC64

config 64BIT
	bool
	default y if PPC64

config PPC_MERGE
	def_bool y

config MMU
	bool
	default y

config GENERIC_HARDIRQS
	bool
	default y

config IRQ_PER_CPU
	bool
	default y

config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

config ARCH_HAS_ILOG2_U32
	bool
	default y

config ARCH_HAS_ILOG2_U64
	bool
	default y if 64BIT

config GENERIC_HWEIGHT
	bool
	default y

config GENERIC_CALIBRATE_DELAY
	bool
	default y

config GENERIC_FIND_NEXT_BIT
	bool
	default y

config PPC
	bool
	default y

config EARLY_PRINTK
	bool
	default y

config COMPAT
	bool
	default y if PPC64

config SYSVIPC_COMPAT
	bool
	depends on COMPAT && SYSVIPC
	default y

# All PPC32s use generic nvram driver through ppc_md
config GENERIC_NVRAM
	bool
	default y if PPC32

config SCHED_NO_NO_OMIT_FRAME_POINTER
	bool
	default y

config ARCH_MAY_HAVE_PC_FDC
	bool
	default y

config PPC_OF
	def_bool y

config PPC_UDBG_16550
	bool
	default n

config GENERIC_TBSYNC
	bool
	default y if PPC32 && SMP
	default n

config AUDIT_ARCH
	bool
	default y

config GENERIC_BUG
	bool
	default y
	depends on BUG

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

menu "Processor support"
choice
	prompt "Processor Type"
	depends on PPC32
	default 6xx

config CLASSIC32
	bool "52xx/6xx/7xx/74xx"
	select PPC_FPU
	select 6xx
	help
	  There are four families of PowerPC chips supported.  The more common
	  types (601, 603, 604, 740, 750, 7400), the Motorola embedded
	  versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
	  embedded versions (403 and 405) and the high end 64 bit Power
	  processors (POWER 3, POWER4, and IBM PPC970 also known as G5).

	  This option is the catch-all for 6xx types, including some of the
	  embedded versions.  Unless there is see an option for the specific
	  chip family you are using, you want this option.
	  
	  You do not want this if you are building a kernel for a 64 bit
	  IBM RS/6000 or an Apple G5, choose 6xx.
	  
	  If unsure, select this option
	  
	  Note that the kernel runs in 32-bit mode even on 64-bit chips.

config PPC_82xx
	bool "Freescale 82xx"
	select 6xx
	select PPC_FPU

config PPC_83xx
	bool "Freescale 83xx"
	select 6xx
	select FSL_SOC
	select 83xx
	select PPC_FPU

config PPC_85xx
	bool "Freescale 85xx"
	select E500
	select FSL_SOC
	select 85xx

config PPC_86xx
	bool "Freescale 86xx"
	select 6xx
	select FSL_SOC
	select PPC_FPU
	select ALTIVEC
	help
	  The Freescale E600 SoCs have 74xx cores.

config PPC_8xx
	bool "Freescale 8xx"
	select FSL_SOC
	select 8xx

config 40x
	bool "AMCC 40x"
	select PPC_DCR_NATIVE

config 44x
	bool "AMCC 44x"
	select PPC_DCR_NATIVE


config E200
	bool "Freescale e200"

endchoice

config POWER4_ONLY
	bool "Optimize for POWER4"
	depends on PPC64
	default n
	---help---
	  Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
	  The resulting binary will not work on POWER3 or RS64 processors
	  when compiled with binutils 2.15 or later.

config POWER3
	bool
	depends on PPC64
	default y if !POWER4_ONLY

config POWER4
	depends on PPC64
	def_bool y

config 6xx
	bool

# this is temp to handle compat with arch=pp