arch/arm/mm/Kconfig - kernel/msm - Gitiles

 comment "Processor Type"

 config CPU_32
 	bool
 	default y

 # Select CPU types depending on the architecture selected.  This selects
 # which CPUs we support in the kernel image, and the compiler instruction
 # optimiser behaviour.

 # ARM610
 config CPU_ARM610
 	bool "Support ARM610 processor"
 	depends on ARCH_RPC
 	select CPU_32v3
 	select CPU_CACHE_V3
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V3 if MMU
 	select CPU_TLB_V3 if MMU
 	help
 	  The ARM610 is the successor to the ARM3 processor
 	  and was produced by VLSI Technology Inc.

 	  Say Y if you want support for the ARM610 processor.
 	  Otherwise, say N.

 # ARM7TDMI
 config CPU_ARM7TDMI
 	bool "Support ARM7TDMI processor"
 	depends on !MMU
 	select CPU_32v4T
 	select CPU_ABRT_LV4T
 	select CPU_CACHE_V4
 	help
 	  A 32-bit RISC microprocessor based on the ARM7 processor core
 	  which has no memory control unit and cache.

 	  Say Y if you want support for the ARM7TDMI processor.
 	  Otherwise, say N.

 # ARM710
 config CPU_ARM710
 	bool "Support ARM710 processor" if !ARCH_CLPS7500 && ARCH_RPC
 	default y if ARCH_CLPS7500
 	select CPU_32v3
 	select CPU_CACHE_V3
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V3 if MMU
 	select CPU_TLB_V3 if MMU
 	help
 	  A 32-bit RISC microprocessor based on the ARM7 processor core
 	  designed by Advanced RISC Machines Ltd. The ARM710 is the
 	  successor to the ARM610 processor. It was released in
 	  July 1994 by VLSI Technology Inc.

 	  Say Y if you want support for the ARM710 processor.
 	  Otherwise, say N.

 # ARM720T
 config CPU_ARM720T
 	bool "Support ARM720T processor" if !ARCH_CLPS711X && !ARCH_L7200 && !ARCH_CDB89712 && ARCH_INTEGRATOR
 	default y if ARCH_CLPS711X || ARCH_L7200 || ARCH_CDB89712 || ARCH_H720X
 	select CPU_32v4T
 	select CPU_ABRT_LV4T
 	select CPU_CACHE_V4
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WT if MMU
 	select CPU_TLB_V4WT if MMU
 	help
 	  A 32-bit RISC processor with 8kByte Cache, Write Buffer and
 	  MMU built around an ARM7TDMI core.

 	  Say Y if you want support for the ARM720T processor.
 	  Otherwise, say N.

 # ARM740T
 config CPU_ARM740T
 	bool "Support ARM740T processor" if ARCH_INTEGRATOR
 	depends on !MMU
 	select CPU_32v4T
 	select CPU_ABRT_LV4T
 	select CPU_CACHE_V3	# although the core is v4t
 	select CPU_CP15_MPU
 	help
 	  A 32-bit RISC processor with 8KB cache or 4KB variants,
 	  write buffer and MPU(Protection Unit) built around
 	  an ARM7TDMI core.

 	  Say Y if you want support for the ARM740T processor.
 	  Otherwise, say N.

 # ARM9TDMI
 config CPU_ARM9TDMI
 	bool "Support ARM9TDMI processor"
 	depends on !MMU
 	select CPU_32v4T
 	select CPU_ABRT_NOMMU
 	select CPU_CACHE_V4
 	help
 	  A 32-bit RISC microprocessor based on the ARM9 processor core
 	  which has no memory control unit and cache.

 	  Say Y if you want support for the ARM9TDMI processor.
 	  Otherwise, say N.

 # ARM920T
 config CPU_ARM920T
 	bool "Support ARM920T processor"
 	depends on ARCH_EP93XX || ARCH_INTEGRATOR || CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_IMX || ARCH_AAEC2000 || ARCH_AT91RM9200
 	default y if CPU_S3C2410 || CPU_S3C2440 || CPU_S3C2442 || ARCH_AT91RM9200
 	select CPU_32v4T
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WBI if MMU
 	help
 	  The ARM920T is licensed to be produced by numerous vendors,
 	  and is used in the Maverick EP9312 and the Samsung S3C2410.

 	  More information on the Maverick EP9312 at
 	  <http://linuxdevices.com/products/PD2382866068.html>.

 	  Say Y if you want support for the ARM920T processor.
 	  Otherwise, say N.

 # ARM922T
 config CPU_ARM922T
 	bool "Support ARM922T processor" if ARCH_INTEGRATOR
 	depends on ARCH_LH7A40X || ARCH_INTEGRATOR
 	default y if ARCH_LH7A40X
 	select CPU_32v4T
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WBI if MMU
 	help
 	  The ARM922T is a version of the ARM920T, but with smaller
 	  instruction and data caches. It is used in Altera's
 	  Excalibur XA device family.

 	  Say Y if you want support for the ARM922T processor.
 	  Otherwise, say N.

 # ARM925T
 config CPU_ARM925T
  	bool "Support ARM925T processor" if ARCH_OMAP1
  	depends on ARCH_OMAP15XX
  	default y if ARCH_OMAP15XX
 	select CPU_32v4T
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WBI if MMU
  	help
  	  The ARM925T is a mix between the ARM920T and ARM926T, but with
 	  different instruction and data caches. It is used in TI's OMAP
  	  device family.

  	  Say Y if you want support for the ARM925T processor.
  	  Otherwise, say N.

 # ARM926T
 config CPU_ARM926T
 	bool "Support ARM926T processor"
 	depends on ARCH_INTEGRATOR || ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || MACH_REALVIEW_EB || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_NS9XXX
 	default y if ARCH_VERSATILE_PB || MACH_VERSATILE_AB || ARCH_OMAP730 || ARCH_OMAP16XX || ARCH_PNX4008 || ARCH_NETX || CPU_S3C2412 || ARCH_AT91SAM9260 || ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || ARCH_NS9XXX
 	select CPU_32v5
 	select CPU_ABRT_EV5TJ
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WBI if MMU
 	help
 	  This is a variant of the ARM920.  It has slightly different
 	  instruction sequences for cache and TLB operations.  Curiously,
 	  there is no documentation on it at the ARM corporate website.

 	  Say Y if you want support for the ARM926T processor.
 	  Otherwise, say N.

 # ARM940T
 config CPU_ARM940T
 	bool "Support ARM940T processor" if ARCH_INTEGRATOR
 	depends on !MMU
 	select CPU_32v4T
 	select CPU_ABRT_NOMMU
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MPU
 	help
 	  ARM940T is a member of the ARM9TDMI family of general-
 	  purpose microprocessors with MPU and separate 4KB
 	  instruction and 4KB data cases, each with a 4-word line
 	  length.

 	  Say Y if you want support for the ARM940T processor.
 	  Otherwise, say N.

 # ARM946E-S
 config CPU_ARM946E
 	bool "Support ARM946E-S processor" if ARCH_INTEGRATOR
 	depends on !MMU
 	select CPU_32v5
 	select CPU_ABRT_NOMMU
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MPU
 	help
 	  ARM946E-S is a member of the ARM9E-S family of high-
 	  performance, 32-bit system-on-chip processor solutions.
 	  The TCM and ARMv5TE 32-bit instruction set is supported.

 	  Say Y if you want support for the ARM946E-S processor.
 	  Otherwise, say N.

 # ARM1020 - needs validating
 config CPU_ARM1020
 	bool "Support ARM1020T (rev 0) processor"
 	depends on ARCH_INTEGRATOR
 	select CPU_32v5
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WBI if MMU
 	help
 	  The ARM1020 is the 32K cached version of the ARM10 processor,
 	  with an addition of a floating-point unit.

 	  Say Y if you want support for the ARM1020 processor.
 	  Otherwise, say N.

 # ARM1020E - needs validating
 config CPU_ARM1020E
 	bool "Support ARM1020E processor"
 	depends on ARCH_INTEGRATOR
 	select CPU_32v5
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_V4WT
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WBI if MMU
 	depends on n

 # ARM1022E
 config CPU_ARM1022
 	bool "Support ARM1022E processor"
 	depends on ARCH_INTEGRATOR
 	select CPU_32v5
 	select CPU_ABRT_EV4T
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU # can probably do better
 	select CPU_TLB_V4WBI if MMU
 	help
 	  The ARM1022E is an implementation of the ARMv5TE architecture
 	  based upon the ARM10 integer core with a 16KiB L1 Harvard cache,
 	  embedded trace macrocell, and a floating-point unit.

 	  Say Y if you want support for the ARM1022E processor.
 	  Otherwise, say N.

 # ARM1026EJ-S
 config CPU_ARM1026
 	bool "Support ARM1026EJ-S processor"
 	depends on ARCH_INTEGRATOR
 	select CPU_32v5
 	select CPU_ABRT_EV5T # But need Jazelle, but EV5TJ ignores bit 10
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU # can probably do better
 	select CPU_TLB_V4WBI if MMU
 	help
 	  The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture
 	  based upon the ARM10 integer core.

 	  Say Y if you want support for the ARM1026EJ-S processor.
 	  Otherwise, say N.

 # SA110
 config CPU_SA110
 	bool "Support StrongARM(R) SA-110 processor" if !ARCH_EBSA110 && !FOOTBRIDGE && !ARCH_TBOX && !ARCH_SHARK && !ARCH_NEXUSPCI && ARCH_RPC
 	default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_TBOX || ARCH_SHARK || ARCH_NEXUSPCI
 	select CPU_32v3 if ARCH_RPC
 	select CPU_32v4 if !ARCH_RPC
 	select CPU_ABRT_EV4
 	select CPU_CACHE_V4WB
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_COPY_V4WB if MMU
 	select CPU_TLB_V4WB if MMU
 	help
 	  The Intel StrongARM(R) SA-110 is a 32-bit microprocessor and
 	  is available at five speeds ranging from 100 MHz to 233 MHz.
 	  More information is available at
 	  <http://developer.intel.com/design/strong/sa110.htm>.

 	  Say Y if you want support for the SA-110 processor.
 	  Otherwise, say N.

 # SA1100
 config CPU_SA1100
 	bool
 	depends on ARCH_SA1100
 	default y
 	select CPU_32v4
 	select CPU_ABRT_EV4
 	select CPU_CACHE_V4WB
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_TLB_V4WB if MMU

 # XScale
 config CPU_XSCALE
 	bool
 	depends on ARCH_IOP32X || ARCH_IOP33X || ARCH_PXA || ARCH_IXP4XX || ARCH_IXP2000
 	default y
 	select CPU_32v5
 	select CPU_ABRT_EV5T
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_TLB_V4WBI if MMU

 # XScale Core Version 3
 config CPU_XSC3
 	bool
 	depends on ARCH_IXP23XX || ARCH_IOP13XX
 	default y
 	select CPU_32v5
 	select CPU_ABRT_EV5T
 	select CPU_CACHE_VIVT
 	select CPU_CP15_MMU
 	select CPU_TLB_V4WBI if MMU
 	select IO_36

 # ARMv6
 config CPU_V6
 	bool "Support ARM V6 processor"
 	depends on ARCH_INTEGRATOR || MACH_REALVIEW_EB || ARCH_OMAP2
 	select CPU_32v6
 	select CPU_ABRT_EV6
 	select CPU_CACHE_V6
 	select CPU_CACHE_VIPT
 	select CPU_CP15_MMU
 	select CPU_COPY_V6 if MMU
 	select CPU_TLB_V6 if MMU

 # ARMv6k
 config CPU_32v6K
 	bool "Support ARM V6K processor extensions" if !SMP
 	depends on CPU_V6
 	default y if SMP
 	help
 	  Say Y here if your ARMv6 processor supports the 'K' extension.
 	  This enables the kernel to use some instructions not present
 	  on previous processors, and as such a kernel build with this
 	  enabled will not boot on processors with do not support these
 	  instructions.

 # Figure out what processor architecture version we should be using.
 # This defines the compiler instruction set which depends on the machine type.
 config CPU_32v3
 	bool
 	select TLS_REG_EMUL if SMP || !MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

 config CPU_32v4
 	bool
 	select TLS_REG_EMUL if SMP || !MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

 config CPU_32v4T
 	bool
 	select TLS_REG_EMUL if SMP || !MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

 config CPU_32v5
 	bool
 	select TLS_REG_EMUL if SMP || !MMU
 	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

 config CPU_32v6
 	bool

 # The abort model
 config CPU_ABRT_NOMMU
 	bool

 config CPU_ABRT_EV4
 	bool

 config CPU_ABRT_EV4T
 	bool

 config CPU_ABRT_LV4T
 	bool

 config CPU_ABRT_EV5T
 	bool

 config CPU_ABRT_EV5TJ
 	bool

 config CPU_ABRT_EV6
 	bool

 # The cache model
 config CPU_CACHE_V3
 	bool

 config CPU_CACHE_V4
 	bool

 config CPU_CACHE_V4WT
 	bool

 config CPU_CACHE_V4WB
 	bool

 config CPU_CACHE_V6
 	bool

 config CPU_CACHE_VIVT
 	bool

 config CPU_CACHE_VIPT
 	bool

 if MMU
 # The copy-page model
 config CPU_COPY_V3
 	bool

 config CPU_COPY_V4WT
 	bool

 config CPU_COPY_V4WB
 	bool

 config CPU_COPY_V6
 	bool

 # This selects the TLB model
 config CPU_TLB_V3
 	bool
 	help
 	  ARM Architecture Version 3 TLB.

 config CPU_TLB_V4WT
 	bool
 	help
 	  ARM Architecture Version 4 TLB with writethrough cache.

 config CPU_TLB_V4WB
 	bool
 	help
 	  ARM Architecture Version 4 TLB with writeback cache.

 config CPU_TLB_V4WBI
 	bool
 	help
 	  ARM Architecture Version 4 TLB with writeback cache and invalidate
 	  instruction cache entry.

 config CPU_TLB_V6
 	bool

 endif

 config CPU_CP15
 	bool
 	help
 	  Processor has the CP15 register.

 config CPU_CP15_MMU
 	bool
 	select CPU_CP15
 	help
 	  Processor has the CP15 register, which has MMU related registers.

 config CPU_CP15_MPU
 	bool
 	select CPU_CP15
 	help
 	  Processor has the CP15 register, which has MPU related registers.

 #
 # CPU supports 36-bit I/O
 #
 config IO_36
 	bool

 comment "Processor Features"

 config ARM_THUMB
 	bool "Support Thumb user binaries"
 	depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_V6
 	default y
 	help
 	  Say Y if you want to include kernel support for running user space
 	  Thumb binaries.

 	  The Thumb instruction set is a compressed form of the standard ARM
 	  instruction set resulting in smaller binaries at the expense of
 	  slightly less efficient code.

 	  If you don't know what this all is, saying Y is a safe choice.

 config CPU_BIG_ENDIAN
 	bool "Build big-endian kernel"
 	depends on ARCH_SUPPORTS_BIG_ENDIAN
 	help
 	  Say Y if you plan on running a kernel in big-endian mode.
 	  Note that your board must be properly built and your board
 	  port must properly enable any big-endian related features
 	  of your chipset/board/processor.

 config CPU_HIGH_VECTOR
 	depends on !MMU && CPU_CP15 && !CPU_ARM740T
 	bool "Select the High exception vector"
 	default n
 	help
 	  Say Y here to select high exception vector(0xFFFF0000~).
 	  The exception vector can be vary depending on the platform
 	  design in nommu mode. If your platform needs to select
 	  high exception vector, say Y.
 	  Otherwise or if you are unsure, say N, and the low exception
 	  vector (0x00000000~) will be used.

 config CPU_ICACHE_DISABLE
 	bool "Disable I-Cache (I-bit)"
 	depends on CPU_CP15 && !(CPU_ARM610 || CPU_ARM710 || CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3)
 	help
 	  Say Y here to disable the processor instruction cache. Unless
 	  you have a reason not to or are unsure, say N.

 config CPU_DCACHE_DISABLE
 	bool "Disable D-Cache (C-bit)"
 	depends on CPU_CP15
 	help
 	  Say Y here to disable the processor data cache. Unless
 	  you have a reason not to or are unsure, say N.

 config CPU_DCACHE_SIZE
 	hex
 	depends on CPU_ARM740T || CPU_ARM946E
 	default 0x00001000 if CPU_ARM740T
 	default 0x00002000 # default size for ARM946E-S
 	help
 	  Some cores are synthesizable to have various sized cache. For
 	  ARM946E-S case, it can vary from 0KB to 1MB.
 	  To support such cache operations, it is efficient to know the size
 	  before compile time.
 	  If your SoC is configured to have a different size, define the value
 	  here with proper conditions.

 config CPU_DCACHE_WRITETHROUGH
 	bool "Force write through D-cache"
 	depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_V6) && !CPU_DCACHE_DISABLE
 	default y if CPU_ARM925T
 	help
 	  Say Y here to use the data cache in writethrough mode. Unless you
 	  specifically require this or are unsure, say N.

 config CPU_CACHE_ROUND_ROBIN
 	bool "Round robin I and D cache replacement algorithm"
 	depends on (CPU_ARM926T || CPU_ARM946E || CPU_ARM1020) && (!CPU_ICACHE_DISABLE || !CPU_DCACHE_DISABLE)
 	help
 	  Say Y here to use the predictable round-robin cache replacement
 	  policy.  Unless you specifically require this or are unsure, say N.

 config CPU_BPREDICT_DISABLE
 	bool "Disable branch prediction"
 	depends on CPU_ARM1020 || CPU_V6 || CPU_XSC3
 	help
 	  Say Y here to disable branch prediction.  If unsure, say N.

 config TLS_REG_EMUL
 	bool
 	help
 	  An SMP system using a pre-ARMv6 processor (there are apparently
 	  a few prototypes like that in existence) and therefore access to
 	  that required register must be emulated.

 config HAS_TLS_REG
 	bool
 	depends on !TLS_REG_EMUL
 	default y if SMP || CPU_32v7
 	help
 	  This selects support for the CP15 thread register.
 	  It is defined to be available on some ARMv6 processors (including
 	  all SMP capable ARMv6's) or later processors.  User space may
 	  assume directly accessing that register and always obtain the
 	  expected value only on ARMv7 and above.

 config NEEDS_SYSCALL_FOR_CMPXCHG
 	bool
 	help
 	  SMP on a pre-ARMv6 processor?  Well OK then.
 	  Forget about fast user space cmpxchg support.
 	  It is just not possible.

 config OUTER_CACHE
 	bool
 	default n

 config CACHE_L2X0
 	bool
 	select OUTER_CACHE
	comment "Processor Type"

	config CPU_32
	bool
	default y

	# Select CPU types depending on the architecture selected. This selects
	# which CPUs we support in the kernel image, and the compiler instruction
	# optimiser behaviour.

	# ARM610
	config CPU_ARM610
	bool "Support ARM610 processor"
	depends on ARCH_RPC
	select CPU_32v3
	select CPU_CACHE_V3
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V3 if MMU
	select CPU_TLB_V3 if MMU
	help
	The ARM610 is the successor to the ARM3 processor
	and was produced by VLSI Technology Inc.

	Say Y if you want support for the ARM610 processor.
	Otherwise, say N.

	# ARM7TDMI
	config CPU_ARM7TDMI
	bool "Support ARM7TDMI processor"
	depends on !MMU
	select CPU_32v4T
	select CPU_ABRT_LV4T
	select CPU_CACHE_V4
	help
	A 32-bit RISC microprocessor based on the ARM7 processor core
	which has no memory control unit and cache.

	Say Y if you want support for the ARM7TDMI processor.
	Otherwise, say N.

	# ARM710
	config CPU_ARM710
	bool "Support ARM710 processor" if !ARCH_CLPS7500 && ARCH_RPC
	default y if ARCH_CLPS7500
	select CPU_32v3
	select CPU_CACHE_V3
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V3 if MMU
	select CPU_TLB_V3 if MMU
	help
	A 32-bit RISC microprocessor based on the ARM7 processor core
	designed by Advanced RISC Machines Ltd. The ARM710 is the
	successor to the ARM610 processor. It was released in
	July 1994 by VLSI Technology Inc.

	Say Y if you want support for the ARM710 processor.
	Otherwise, say N.

	# ARM720T
	config CPU_ARM720T
	bool "Support ARM720T processor" if !ARCH_CLPS711X && !ARCH_L7200 && !ARCH_CDB89712 && ARCH_INTEGRATOR
	default y if ARCH_CLPS711X \|\| ARCH_L7200 \|\| ARCH_CDB89712 \|\| ARCH_H720X
	select CPU_32v4T
	select CPU_ABRT_LV4T
	select CPU_CACHE_V4
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WT if MMU
	select CPU_TLB_V4WT if MMU
	help
	A 32-bit RISC processor with 8kByte Cache, Write Buffer and
	MMU built around an ARM7TDMI core.

	Say Y if you want support for the ARM720T processor.
	Otherwise, say N.

	# ARM740T
	config CPU_ARM740T
	bool "Support ARM740T processor" if ARCH_INTEGRATOR
	depends on !MMU
	select CPU_32v4T
	select CPU_ABRT_LV4T
	select CPU_CACHE_V3 # although the core is v4t
	select CPU_CP15_MPU
	help
	A 32-bit RISC processor with 8KB cache or 4KB variants,
	write buffer and MPU(Protection Unit) built around
	an ARM7TDMI core.

	Say Y if you want support for the ARM740T processor.
	Otherwise, say N.

	# ARM9TDMI
	config CPU_ARM9TDMI
	bool "Support ARM9TDMI processor"
	depends on !MMU
	select CPU_32v4T
	select CPU_ABRT_NOMMU
	select CPU_CACHE_V4
	help
	A 32-bit RISC microprocessor based on the ARM9 processor core
	which has no memory control unit and cache.

	Say Y if you want support for the ARM9TDMI processor.
	Otherwise, say N.

	# ARM920T
	config CPU_ARM920T
	bool "Support ARM920T processor"
	depends on ARCH_EP93XX \|\| ARCH_INTEGRATOR \|\| CPU_S3C2410 \|\| CPU_S3C2440 \|\| CPU_S3C2442 \|\| ARCH_IMX \|\| ARCH_AAEC2000 \|\| ARCH_AT91RM9200
	default y if CPU_S3C2410 \|\| CPU_S3C2440 \|\| CPU_S3C2442 \|\| ARCH_AT91RM9200
	select CPU_32v4T
	select CPU_ABRT_EV4T
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
	help
	The ARM920T is licensed to be produced by numerous vendors,
	and is used in the Maverick EP9312 and the Samsung S3C2410.

	More information on the Maverick EP9312 at
	<http://linuxdevices.com/products/PD2382866068.html>.

	Say Y if you want support for the ARM920T processor.
	Otherwise, say N.

	# ARM922T
	config CPU_ARM922T
	bool "Support ARM922T processor" if ARCH_INTEGRATOR
	depends on ARCH_LH7A40X \|\| ARCH_INTEGRATOR
	default y if ARCH_LH7A40X
	select CPU_32v4T
	select CPU_ABRT_EV4T
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
	help
	The ARM922T is a version of the ARM920T, but with smaller
	instruction and data caches. It is used in Altera's
	Excalibur XA device family.

	Say Y if you want support for the ARM922T processor.
	Otherwise, say N.

	# ARM925T
	config CPU_ARM925T
	bool "Support ARM925T processor" if ARCH_OMAP1
	depends on ARCH_OMAP15XX
	default y if ARCH_OMAP15XX
	select CPU_32v4T
	select CPU_ABRT_EV4T
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
	help
	The ARM925T is a mix between the ARM920T and ARM926T, but with
	different instruction and data caches. It is used in TI's OMAP
	device family.

	Say Y if you want support for the ARM925T processor.
	Otherwise, say N.

	# ARM926T
	config CPU_ARM926T
	bool "Support ARM926T processor"
	depends on ARCH_INTEGRATOR \|\| ARCH_VERSATILE_PB \|\| MACH_VERSATILE_AB \|\| ARCH_OMAP730 \|\| ARCH_OMAP16XX \|\| MACH_REALVIEW_EB \|\| ARCH_PNX4008 \|\| ARCH_NETX \|\| CPU_S3C2412 \|\| ARCH_AT91SAM9260 \|\| ARCH_AT91SAM9261 \|\| ARCH_AT91SAM9263 \|\| ARCH_NS9XXX
	default y if ARCH_VERSATILE_PB \|\| MACH_VERSATILE_AB \|\| ARCH_OMAP730 \|\| ARCH_OMAP16XX \|\| ARCH_PNX4008 \|\| ARCH_NETX \|\| CPU_S3C2412 \|\| ARCH_AT91SAM9260 \|\| ARCH_AT91SAM9261 \|\| ARCH_AT91SAM9263 \|\| ARCH_NS9XXX
	select CPU_32v5
	select CPU_ABRT_EV5TJ
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
	help
	This is a variant of the ARM920. It has slightly different
	instruction sequences for cache and TLB operations. Curiously,
	there is no documentation on it at the ARM corporate website.

	Say Y if you want support for the ARM926T processor.
	Otherwise, say N.

	# ARM940T
	config CPU_ARM940T
	bool "Support ARM940T processor" if ARCH_INTEGRATOR
	depends on !MMU
	select CPU_32v4T
	select CPU_ABRT_NOMMU
	select CPU_CACHE_VIVT
	select CPU_CP15_MPU
	help
	ARM940T is a member of the ARM9TDMI family of general-
	purpose microprocessors with MPU and separate 4KB
	instruction and 4KB data cases, each with a 4-word line
	length.

	Say Y if you want support for the ARM940T processor.
	Otherwise, say N.

	# ARM946E-S
	config CPU_ARM946E
	bool "Support ARM946E-S processor" if ARCH_INTEGRATOR
	depends on !MMU
	select CPU_32v5
	select CPU_ABRT_NOMMU
	select CPU_CACHE_VIVT
	select CPU_CP15_MPU
	help
	ARM946E-S is a member of the ARM9E-S family of high-
	performance, 32-bit system-on-chip processor solutions.
	The TCM and ARMv5TE 32-bit instruction set is supported.

	Say Y if you want support for the ARM946E-S processor.
	Otherwise, say N.

	# ARM1020 - needs validating
	config CPU_ARM1020
	bool "Support ARM1020T (rev 0) processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV4T
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
	help
	The ARM1020 is the 32K cached version of the ARM10 processor,
	with an addition of a floating-point unit.

	Say Y if you want support for the ARM1020 processor.
	Otherwise, say N.

	# ARM1020E - needs validating
	config CPU_ARM1020E
	bool "Support ARM1020E processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV4T
	select CPU_CACHE_V4WT
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WBI if MMU
	depends on n

	# ARM1022E
	config CPU_ARM1022
	bool "Support ARM1022E processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV4T
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU # can probably do better
	select CPU_TLB_V4WBI if MMU
	help
	The ARM1022E is an implementation of the ARMv5TE architecture
	based upon the ARM10 integer core with a 16KiB L1 Harvard cache,
	embedded trace macrocell, and a floating-point unit.

	Say Y if you want support for the ARM1022E processor.
	Otherwise, say N.

	# ARM1026EJ-S
	config CPU_ARM1026
	bool "Support ARM1026EJ-S processor"
	depends on ARCH_INTEGRATOR
	select CPU_32v5
	select CPU_ABRT_EV5T # But need Jazelle, but EV5TJ ignores bit 10
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU # can probably do better
	select CPU_TLB_V4WBI if MMU
	help
	The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture
	based upon the ARM10 integer core.

	Say Y if you want support for the ARM1026EJ-S processor.
	Otherwise, say N.

	# SA110
	config CPU_SA110
	bool "Support StrongARM(R) SA-110 processor" if !ARCH_EBSA110 && !FOOTBRIDGE && !ARCH_TBOX && !ARCH_SHARK && !ARCH_NEXUSPCI && ARCH_RPC
	default y if ARCH_EBSA110 \|\| FOOTBRIDGE \|\| ARCH_TBOX \|\| ARCH_SHARK \|\| ARCH_NEXUSPCI
	select CPU_32v3 if ARCH_RPC
	select CPU_32v4 if !ARCH_RPC
	select CPU_ABRT_EV4
	select CPU_CACHE_V4WB
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_COPY_V4WB if MMU
	select CPU_TLB_V4WB if MMU
	help
	The Intel StrongARM(R) SA-110 is a 32-bit microprocessor and
	is available at five speeds ranging from 100 MHz to 233 MHz.
	More information is available at
	<http://developer.intel.com/design/strong/sa110.htm>.

	Say Y if you want support for the SA-110 processor.
	Otherwise, say N.

	# SA1100
	config CPU_SA1100
	bool
	depends on ARCH_SA1100
	default y
	select CPU_32v4
	select CPU_ABRT_EV4
	select CPU_CACHE_V4WB
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_TLB_V4WB if MMU

	# XScale
	config CPU_XSCALE
	bool
	depends on ARCH_IOP32X \|\| ARCH_IOP33X \|\| ARCH_PXA \|\| ARCH_IXP4XX \|\| ARCH_IXP2000
	default y
	select CPU_32v5
	select CPU_ABRT_EV5T
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_TLB_V4WBI if MMU

	# XScale Core Version 3
	config CPU_XSC3
	bool
	depends on ARCH_IXP23XX \|\| ARCH_IOP13XX
	default y
	select CPU_32v5
	select CPU_ABRT_EV5T
	select CPU_CACHE_VIVT
	select CPU_CP15_MMU
	select CPU_TLB_V4WBI if MMU
	select IO_36

	# ARMv6
	config CPU_V6
	bool "Support ARM V6 processor"
	depends on ARCH_INTEGRATOR \|\| MACH_REALVIEW_EB \|\| ARCH_OMAP2
	select CPU_32v6
	select CPU_ABRT_EV6
	select CPU_CACHE_V6
	select CPU_CACHE_VIPT
	select CPU_CP15_MMU
	select CPU_COPY_V6 if MMU
	select CPU_TLB_V6 if MMU

	# ARMv6k
	config CPU_32v6K
	bool "Support ARM V6K processor extensions" if !SMP
	depends on CPU_V6
	default y if SMP
	help
	Say Y here if your ARMv6 processor supports the 'K' extension.
	This enables the kernel to use some instructions not present
	on previous processors, and as such a kernel build with this
	enabled will not boot on processors with do not support these
	instructions.

	# Figure out what processor architecture version we should be using.
	# This defines the compiler instruction set which depends on the machine type.
	config CPU_32v3
	bool
	select TLS_REG_EMUL if SMP \|\| !MMU
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

	config CPU_32v4
	bool
	select TLS_REG_EMUL if SMP \|\| !MMU
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

	config CPU_32v4T
	bool
	select TLS_REG_EMUL if SMP \|\| !MMU
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

	config CPU_32v5
	bool
	select TLS_REG_EMUL if SMP \|\| !MMU
	select NEEDS_SYSCALL_FOR_CMPXCHG if SMP

	config CPU_32v6
	bool

	# The abort model
	config CPU_ABRT_NOMMU
	bool

	config CPU_ABRT_EV4
	bool

	config CPU_ABRT_EV4T
	bool

	config CPU_ABRT_LV4T
	bool

	config CPU_ABRT_EV5T
	bool

	config CPU_ABRT_EV5TJ
	bool

	config CPU_ABRT_EV6
	bool

	# The cache model
	config CPU_CACHE_V3
	bool

	config CPU_CACHE_V4
	bool

	config CPU_CACHE_V4WT
	bool

	config CPU_CACHE_V4WB
	bool

	config CPU_CACHE_V6
	bool

	config CPU_CACHE_VIVT
	bool

	config CPU_CACHE_VIPT
	bool

	if MMU
	# The copy-page model
	config CPU_COPY_V3
	bool

	config CPU_COPY_V4WT
	bool

	config CPU_COPY_V4WB
	bool

	config CPU_COPY_V6
	bool

	# This selects the TLB model
	config CPU_TLB_V3
	bool
	help
	ARM Architecture Version 3 TLB.

	config CPU_TLB_V4WT
	bool
	help
	ARM Architecture Version 4 TLB with writethrough cache.

	config CPU_TLB_V4WB
	bool
	help
	ARM Architecture Version 4 TLB with writeback cache.

	config CPU_TLB_V4WBI
	bool
	help
	ARM Architecture Version 4 TLB with writeback cache and invalidate
	instruction cache entry.

	config CPU_TLB_V6
	bool

	endif

	config CPU_CP15
	bool
	help
	Processor has the CP15 register.

	config CPU_CP15_MMU
	bool
	select CPU_CP15
	help
	Processor has the CP15 register, which has MMU related registers.

	config CPU_CP15_MPU
	bool
	select CPU_CP15
	help
	Processor has the CP15 register, which has MPU related registers.

	#
	# CPU supports 36-bit I/O
	#
	config IO_36
	bool

	comment "Processor Features"

	config ARM_THUMB
	bool "Support Thumb user binaries"
	depends on CPU_ARM720T \|\| CPU_ARM740T \|\| CPU_ARM920T \|\| CPU_ARM922T \|\| CPU_ARM925T \|\| CPU_ARM926T \|\| CPU_ARM940T \|\| CPU_ARM946E \|\| CPU_ARM1020 \|\| CPU_ARM1020E \|\| CPU_ARM1022 \|\| CPU_ARM1026 \|\| CPU_XSCALE \|\| CPU_XSC3 \|\| CPU_V6
	default y
	help
	Say Y if you want to include kernel support for running user space
	Thumb binaries.

	The Thumb instruction set is a compressed form of the standard ARM
	instruction set resulting in smaller binaries at the expense of
	slightly less efficient code.

	If you don't know what this all is, saying Y is a safe choice.

	config CPU_BIG_ENDIAN
	bool "Build big-endian kernel"
	depends on ARCH_SUPPORTS_BIG_ENDIAN
	help
	Say Y if you plan on running a kernel in big-endian mode.
	Note that your board must be properly built and your board
	port must properly enable any big-endian related features
	of your chipset/board/processor.

	config CPU_HIGH_VECTOR
	depends on !MMU && CPU_CP15 && !CPU_ARM740T
	bool "Select the High exception vector"
	default n
	help
	Say Y here to select high exception vector(0xFFFF0000~).
	The exception vector can be vary depending on the platform
	design in nommu mode. If your platform needs to select
	high exception vector, say Y.
	Otherwise or if you are unsure, say N, and the low exception
	vector (0x00000000~) will be used.

	config CPU_ICACHE_DISABLE
	bool "Disable I-Cache (I-bit)"
	depends on CPU_CP15 && !(CPU_ARM610 \|\| CPU_ARM710 \|\| CPU_ARM720T \|\| CPU_ARM740T \|\| CPU_XSCALE \|\| CPU_XSC3)
	help
	Say Y here to disable the processor instruction cache. Unless
	you have a reason not to or are unsure, say N.

	config CPU_DCACHE_DISABLE
	bool "Disable D-Cache (C-bit)"
	depends on CPU_CP15
	help
	Say Y here to disable the processor data cache. Unless
	you have a reason not to or are unsure, say N.

	config CPU_DCACHE_SIZE
	hex
	depends on CPU_ARM740T \|\| CPU_ARM946E
	default 0x00001000 if CPU_ARM740T
	default 0x00002000 # default size for ARM946E-S
	help
	Some cores are synthesizable to have various sized cache. For
	ARM946E-S case, it can vary from 0KB to 1MB.
	To support such cache operations, it is efficient to know the size
	before compile time.
	If your SoC is configured to have a different size, define the value
	here with proper conditions.

	config CPU_DCACHE_WRITETHROUGH
	bool "Force write through D-cache"
	depends on (CPU_ARM740T \|\| CPU_ARM920T \|\| CPU_ARM922T \|\| CPU_ARM925T \|\| CPU_ARM926T \|\| CPU_ARM940T \|\| CPU_ARM946E \|\| CPU_ARM1020 \|\| CPU_V6) && !CPU_DCACHE_DISABLE
	default y if CPU_ARM925T
	help
	Say Y here to use the data cache in writethrough mode. Unless you
	specifically require this or are unsure, say N.

	config CPU_CACHE_ROUND_ROBIN
	bool "Round robin I and D cache replacement algorithm"
	depends on (CPU_ARM926T \|\| CPU_ARM946E \|\| CPU_ARM1020) && (!CPU_ICACHE_DISABLE \|\| !CPU_DCACHE_DISABLE)
	help
	Say Y here to use the predictable round-robin cache replacement
	policy. Unless you specifically require this or are unsure, say N.

	config CPU_BPREDICT_DISABLE
	bool "Disable branch prediction"
	depends on CPU_ARM1020 \|\| CPU_V6 \|\| CPU_XSC3
	help
	Say Y here to disable branch prediction. If unsure, say N.

	config TLS_REG_EMUL
	bool
	help
	An SMP system using a pre-ARMv6 processor (there are apparently
	a few prototypes like that in existence) and therefore access to
	that required register must be emulated.

	config HAS_TLS_REG
	bool
	depends on !TLS_REG_EMUL
	default y if SMP \|\| CPU_32v7
	help
	This selects support for the CP15 thread register.
	It is defined to be available on some ARMv6 processors (including
	all SMP capable ARMv6's) or later processors. User space may
	assume directly accessing that register and always obtain the
	expected value only on ARMv7 and above.

	config NEEDS_SYSCALL_FOR_CMPXCHG
	bool
	help
	SMP on a pre-ARMv6 processor? Well OK then.
	Forget about fast user space cmpxchg support.
	It is just not possible.

	config OUTER_CACHE
	bool
	default n

	config CACHE_L2X0
	bool
	select OUTER_CACHE