path: root/arch/microblaze/Kconfig

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

mainmenu "Linux/Microblaze Kernel Configuration"

config MICROBLAZE
	def_bool y
	select HAVE_MEMBLOCK
	select HAVE_FUNCTION_TRACER
	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
	select HAVE_FUNCTION_GRAPH_TRACER
	select HAVE_DYNAMIC_FTRACE
	select HAVE_FTRACE_MCOUNT_RECORD
	select USB_ARCH_HAS_EHCI
	select ARCH_WANT_OPTIONAL_GPIOLIB
	select HAVE_OPROFILE
	select HAVE_ARCH_KGDB
	select HAVE_DMA_ATTRS
	select HAVE_DMA_API_DEBUG
	select TRACING_SUPPORT

config SWAP
	def_bool n

config RWSEM_GENERIC_SPINLOCK
	def_bool y

config RWSEM_XCHGADD_ALGORITHM
	bool

config ARCH_HAS_ILOG2_U32
	def_bool n

config ARCH_HAS_ILOG2_U64
	def_bool n

config GENERIC_FIND_NEXT_BIT
	def_bool y

config GENERIC_HWEIGHT
	def_bool y

config GENERIC_HARDIRQS
	def_bool y

config GENERIC_IRQ_PROBE
	def_bool y

config GENERIC_CALIBRATE_DELAY
	def_bool y

config GENERIC_TIME
	def_bool y

config GENERIC_TIME_VSYSCALL
	def_bool n

config GENERIC_CLOCKEVENTS
	def_bool y

config GENERIC_HARDIRQS_NO__DO_IRQ
	def_bool y

config GENERIC_GPIO
	def_bool y

config GENERIC_CSUM
	def_bool y

config STACKTRACE_SUPPORT
	def_bool y

config LOCKDEP_SUPPORT
	def_bool y

config HAVE_LATENCYTOP_SUPPORT
	def_bool y

config DTC
	def_bool y

source "init/Kconfig"

source "kernel/Kconfig.freezer"

source "arch/microblaze/platform/Kconfig.platform"

menu "Processor type and features"

source "kernel/time/Kconfig"

source "kernel/Kconfig.preempt"

source "kernel/Kconfig.hz"

config MMU
	bool "MMU support"
	default n

config NO_MMU
	bool
	depends on !MMU
	default y

comment "Boot options"

config CMDLINE_BOOL
	bool "Default bootloader kernel arguments"

config CMDLINE
	string "Default kernel command string"
	depends on CMDLINE_BOOL
	default "console=ttyUL0,115200"
	help
	  On some architectures there is currently no way for the boot loader
	  to pass arguments to the kernel. For these architectures, you should
	  supply some command-line options at build time by entering them
	  here.

config CMDLINE_FORCE
	bool "Force default kernel command string"
	depends on CMDLINE_BOOL
	default n
	help
	  Set this to have arguments from the default kernel command string
	  override those passed by the boot loader.

config OF
	def_bool y
	select OF_FLATTREE

config PROC_DEVICETREE
	bool "Support for device tree in /proc"
	depends on PROC_FS
	help
	  This option adds a device-tree directory under /proc which contains
	  an image of the device tree that the kernel copies from Open
	  Firmware or other boot firmware. If unsure, say Y here.

endmenu

menu "Advanced setup"

config ADVANCED_OPTIONS
	bool "Prompt for advanced kernel configuration options"
	help
	  This option will enable prompting for a variety of advanced kernel
	  configuration options.  These options can cause the kernel to not
	  work if they are set incorrectly, but can be used to optimize certain
	  aspects of kernel memory management.

	  Unless you know what you are doing, say N here.

comment "Default settings for advanced configuration options are used"
	depends on !ADVANCED_OPTIONS

config XILINX_UNCACHED_SHADOW
	bool "Are you using uncached shadow for RAM ?"
	depends on ADVANCED_OPTIONS && !MMU
	default n
	help
	  This is needed to be able to allocate uncachable memory regions.
	  The feature requires the design to define the RAM memory controller
	  window to be twice as large as the actual physical memory.

config HIGHMEM_START_BOOL
	bool "Set high memory pool address"
	depends on ADVANCED_OPTIONS && HIGHMEM
	help
	  This option allows you to set the base address of the kernel virtual
	  area used to map high memory pages.  This can be useful in
	  optimizing the layout of kernel virtual memory.

	  Say N here unless you know what you are doing.

config HIGHMEM_START
	hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
	depends on MMU
	default "0xfe000000"

config LOWMEM_SIZE_BOOL
	bool "Set maximum low memory"
	depends on ADVANCED_OPTIONS && MMU
	help
	  This option allows you to set the maximum amount of memory which
	  will be used as "low memory", that is, memory which the kernel can
	  access directly, without having to set up a kernel virtual mapping.
	  This can be useful in optimizing the layout of kernel virtual
	  memory.

	  Say N here unless you know what you are doing.

config LOWMEM_SIZE
	hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
	default "0x30000000"

config KERNEL_START_BOOL
	bool "Set custom kernel base address"
	depends on ADVANCED_OPTIONS
	help
	  This option allows you to set the kernel virtual address at which
	  the kernel will map low memory (the kernel image will be linked at
	  this address).  This can be useful in optimizing the virtual memory
	  layout of the system.

	  Say N here unless you know what you are doing.

config KERNEL_START
	hex "Virtual address of kernel base" if KERNEL_START_BOOL
	default "0xc0000000" if MMU
	default KERNEL_BASE_ADDR if !MMU

config TASK_SIZE_BOOL
	bool "Set custom user task size"
	depends on ADVANCED_OPTIONS && MMU
	help
	  This option allows you to set the amount of virtual address space
	  allocated to user tasks.  This can be useful in optimizing the
	  virtual memory layout of the system.

	  Say N here unless you know what you are doing.

config TASK_SIZE
	hex "Size of user task space" if TASK_SIZE_BOOL
	default "0x80000000"

choice
	prompt "Page size"
	default MICROBLAZE_4K_PAGES
	depends on ADVANCED_OPTIONS && !MMU
	help
	  Select the kernel logical page size. Increasing the page size
	  will reduce software overhead at each page boundary, allow
	  hardware prefetch mechanisms to be more effective, and allow
	  larger dma transfers increasing IO efficiency and reducing
	  overhead. However the utilization of memory will increase.
	  For example, each cached file will using a multiple of the
	  page size to hold its contents and the difference between the
	  end of file and the end of page is wasted.

	  If unsure, choose 4K_PAGES.

config MICROBLAZE_4K_PAGES
	bool "4k page size"

config MICROBLAZE_8K_PAGES
	bool "8k page size"

config MICROBLAZE_16K_PAGES
	bool "16k page size"

config MICROBLAZE_32K_PAGES
	bool "32k page size"

endchoice

endmenu

source "mm/Kconfig"

menu "Exectuable file formats"

source "fs/Kconfig.binfmt"

endmenu

menu "Bus Options"

config PCI
	bool "PCI support"

config PCI_DOMAINS
	def_bool PCI

config PCI_SYSCALL
	def_bool PCI

config PCI_XILINX
	bool "Xilinx PCI host bridge support"
	depends on PCI

source "drivers/pci/Kconfig"

endmenu

source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

source "arch/microblaze/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"