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kernel/linux-imx6_3.14.28/arch/frv/Kconfig 8.88 KB
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  config FRV
  	bool
  	default y
  	select HAVE_IDE
  	select HAVE_ARCH_TRACEHOOK
  	select HAVE_PERF_EVENTS
  	select HAVE_UID16
  	select VIRT_TO_BUS
  	select GENERIC_IRQ_SHOW
  	select HAVE_DEBUG_BUGVERBOSE
  	select ARCH_HAVE_NMI_SAFE_CMPXCHG
  	select GENERIC_CPU_DEVICES
  	select ARCH_WANT_IPC_PARSE_VERSION
  	select OLD_SIGSUSPEND3
  	select OLD_SIGACTION
  	select HAVE_DEBUG_STACKOVERFLOW
  
  config ZONE_DMA
  	bool
  	default y
  
  config RWSEM_GENERIC_SPINLOCK
  	bool
  	default y
  
  config RWSEM_XCHGADD_ALGORITHM
  	bool
  
  config GENERIC_HWEIGHT
  	bool
  	default y
  
  config GENERIC_CALIBRATE_DELAY
  	bool
  	default n
  
  config TIME_LOW_RES
  	bool
  	default y
  
  config QUICKLIST
  	bool
  	default y
  
  config ARCH_HAS_ILOG2_U32
  	bool
  	default y
  
  config ARCH_HAS_ILOG2_U64
  	bool
  	default y
  
  config HZ
  	int
  	default 1000
  
  source "init/Kconfig"
  
  source "kernel/Kconfig.freezer"
  
  
  menu "Fujitsu FR-V system setup"
  
  config MMU
  	bool "MMU support"
  	help
  	  This options switches on and off support for the FR-V MMU
  	  (effectively switching between vmlinux and uClinux). Not all FR-V
  	  CPUs support this. Currently only the FR451 has a sufficiently
  	  featured MMU.
  
  config FRV_OUTOFLINE_ATOMIC_OPS
  	bool "Out-of-line the FRV atomic operations"
  	default n
  	help
  	  Setting this option causes the FR-V atomic operations to be mostly
  	  implemented out-of-line.
  
  	  See Documentation/frv/atomic-ops.txt for more information.
  
  config HIGHMEM
  	bool "High memory support"
  	depends on MMU
  	default y
  	help
  	  If you wish to use more than 256MB of memory with your MMU based
  	  system, you will need to select this option. The kernel can only see
  	  the memory between 0xC0000000 and 0xD0000000 directly... everything
  	  else must be kmapped.
  
  	  The arch is, however, capable of supporting up to 3GB of SDRAM.
  
  config HIGHPTE
  	bool "Allocate page tables in highmem"
  	depends on HIGHMEM
  	default y
  	help
  	  The VM uses one page of memory for each page table.  For systems
  	  with a lot of RAM, this can be wasteful of precious low memory.
  	  Setting this option will put user-space page tables in high memory.
  
  source "mm/Kconfig"
  
  choice
  	prompt "uClinux kernel load address"
  	depends on !MMU
  	default UCPAGE_OFFSET_C0000000
  	help
  	  This option sets the base address for the uClinux kernel. The kernel
  	  will rearrange the SDRAM layout to start at this address, and move
  	  itself to start there. It must be greater than 0, and it must be
  	  sufficiently less than 0xE0000000 that the SDRAM does not intersect
  	  the I/O region.
  
  	  The base address must also be aligned such that the SDRAM controller
  	  can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
  
  config UCPAGE_OFFSET_20000000
         bool "0x20000000"
  
  config UCPAGE_OFFSET_40000000
         bool "0x40000000"
  
  config UCPAGE_OFFSET_60000000
         bool "0x60000000"
  
  config UCPAGE_OFFSET_80000000
         bool "0x80000000"
  
  config UCPAGE_OFFSET_A0000000
         bool "0xA0000000"
  
  config UCPAGE_OFFSET_C0000000
         bool "0xC0000000 (Recommended)"
  
  endchoice
  
  config PAGE_OFFSET
  	hex
  	default 0x20000000 if UCPAGE_OFFSET_20000000
  	default 0x40000000 if UCPAGE_OFFSET_40000000
  	default 0x60000000 if UCPAGE_OFFSET_60000000
  	default 0x80000000 if UCPAGE_OFFSET_80000000
  	default 0xA0000000 if UCPAGE_OFFSET_A0000000
  	default 0xC0000000
  
  config PROTECT_KERNEL
  	bool "Protect core kernel against userspace"
  	depends on !MMU
  	default y
  	help
  	  Selecting this option causes the uClinux kernel to change the
  	  permittivity of DAMPR register covering the core kernel image to
  	  prevent userspace accessing the underlying memory directly.
  
  choice
  	prompt "CPU Caching mode"
  	default FRV_DEFL_CACHE_WBACK
  	help
  	  This option determines the default caching mode for the kernel.
  
  	  Write-Back caching mode involves the all reads and writes causing
  	  the affected cacheline to be read into the cache first before being
  	  operated upon. Memory is not then updated by a write until the cache
  	  is filled and a cacheline needs to be displaced from the cache to
  	  make room. Only at that point is it written back.
  
  	  Write-Behind caching is similar to Write-Back caching, except that a
  	  write won't fetch a cacheline into the cache if there isn't already
  	  one there; it will write directly to memory instead.
  
  	  Write-Through caching only fetches cachelines from memory on a
  	  read. Writes always get written directly to memory. If the affected
  	  cacheline is also in cache, it will be updated too.
  
  	  The final option is to turn of caching entirely.
  
  	  Note that not all CPUs support Write-Behind caching. If the CPU on
  	  which the kernel is running doesn't, it'll fall back to Write-Back
  	  caching.
  
  config FRV_DEFL_CACHE_WBACK
  	bool "Write-Back"
  
  config FRV_DEFL_CACHE_WBEHIND
  	bool "Write-Behind"
  
  config FRV_DEFL_CACHE_WTHRU
  	bool "Write-Through"
  
  config FRV_DEFL_CACHE_DISABLED
  	bool "Disabled"
  
  endchoice
  
  menu "CPU core support"
  
  config CPU_FR401
  	bool "Include FR401 core support"
  	depends on !MMU
  	default y
  	help
  	  This enables support for the FR401, FR401A and FR403 CPUs
  
  config CPU_FR405
  	bool "Include FR405 core support"
  	depends on !MMU
  	default y
  	help
  	  This enables support for the FR405 CPU
  
  config CPU_FR451
  	bool "Include FR451 core support"
  	default y
  	help
  	  This enables support for the FR451 CPU
  
  config CPU_FR451_COMPILE
  	bool "Specifically compile for FR451 core"
  	depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
  	default y
  	help
  	  This causes appropriate flags to be passed to the compiler to
  	  optimise for the FR451 CPU
  
  config CPU_FR551
  	bool "Include FR551 core support"
  	depends on !MMU
  	default y
  	help
  	  This enables support for the FR555 CPU
  
  config CPU_FR551_COMPILE
  	bool "Specifically compile for FR551 core"
  	depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
  	default y
  	help
  	  This causes appropriate flags to be passed to the compiler to
  	  optimise for the FR555 CPU
  
  config FRV_L1_CACHE_SHIFT
  	int
  	default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
  	default "6" if CPU_FR551
  
  endmenu
  
  choice
  	prompt "System support"
  	default MB93091_VDK
  
  config MB93091_VDK
  	bool "MB93091 CPU board with or without motherboard"
  
  config MB93093_PDK
  	bool "MB93093 PDK unit"
  
  endchoice
  
  if MB93091_VDK
  choice
  	prompt "Motherboard support"
  	default MB93090_MB00
  
  config MB93090_MB00
  	bool "Use the MB93090-MB00 motherboard"
  	help
  	  Select this option if the MB93091 CPU board is going to be used with
  	  a MB93090-MB00 VDK motherboard
  
  config MB93091_NO_MB
  	bool "Use standalone"
  	help
  	  Select this option if the MB93091 CPU board is going to be used
  	  without a motherboard
  
  endchoice
  endif
  
  config FUJITSU_MB93493
  	bool "MB93493 Multimedia chip"
  	help
  	  Select this option if the MB93493 multimedia chip is going to be
  	  used.
  
  choice
  	prompt "GP-Relative data support"
  	default GPREL_DATA_8
  	help
  	  This option controls what data, if any, should be placed in the GP
  	  relative data sections. Using this means that the compiler can
  	  generate accesses to the data using GR16-relative addressing which
  	  is faster than absolute instructions and saves space (2 instructions
  	  per access).
  
  	  However, the GPREL region is limited in size because the immediate
  	  value used in the load and store instructions is limited to a 12-bit
  	  signed number.
  
  	  So if the linker starts complaining that accesses to GPREL data are
  	  out of range, try changing this option from the default.
  
  	  Note that modules will always be compiled with this feature disabled
  	  as the module data will not be in range of the GP base address.
  
  config GPREL_DATA_8
  	bool "Put data objects of up to 8 bytes into GP-REL"
  
  config GPREL_DATA_4
  	bool "Put data objects of up to 4 bytes into GP-REL"
  
  config GPREL_DATA_NONE
  	bool "Don't use GP-REL"
  
  endchoice
  
  config FRV_ONCPU_SERIAL
  	bool "Use on-CPU serial ports"
  	select SERIAL_8250
  	default y
  
  config PCI
  	bool "Use PCI"
  	depends on MB93090_MB00
  	default y
  	select GENERIC_PCI_IOMAP
  	help
  	  Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
  	  onboard. If you have one of these boards and you wish to use the PCI
  	  facilities, say Y here.
  
  config RESERVE_DMA_COHERENT
  	bool "Reserve DMA coherent memory"
  	depends on PCI && !MMU
  	default y
  	help
  	  Many PCI drivers require access to uncached memory for DMA device
  	  communications (such as is done with some Ethernet buffer rings). If
  	  a fully featured MMU is available, this can be done through page
  	  table settings, but if not, a region has to be set aside and marked
  	  with a special DAMPR register.
  
  	  Setting this option causes uClinux to set aside a portion of the
  	  available memory for use in this manner. The memory will then be
  	  unavailable for normal kernel use.
  
  source "drivers/pci/Kconfig"
  
  source "drivers/pcmcia/Kconfig"
  
  menu "Power management options"
  
  config ARCH_SUSPEND_POSSIBLE
  	def_bool y
  
  source kernel/power/Kconfig
  endmenu
  
  endmenu
  
  
  menu "Executable formats"
  
  source "fs/Kconfig.binfmt"
  
  endmenu
  
  source "net/Kconfig"
  
  source "drivers/Kconfig"
  
  source "fs/Kconfig"
  
  source "arch/frv/Kconfig.debug"
  
  source "security/Kconfig"
  
  source "crypto/Kconfig"
  
  source "lib/Kconfig"