# SPDX-License-Identifier: GPL-2.0-only

  config MICROBLAZE
  	def_bool y

  	select ARCH_32BIT_OFF_T

  	select ARCH_NO_SWAP

  	select ARCH_HAS_BINFMT_FLAT if !MMU

  	select ARCH_HAS_DMA_PREP_COHERENT

  	select ARCH_HAS_GCOV_PROFILE_ALL

  	select ARCH_HAS_SYNC_DMA_FOR_CPU
  	select ARCH_HAS_SYNC_DMA_FOR_DEVICE

  	select ARCH_HAS_DMA_SET_UNCACHED if !MMU

  	select ARCH_MIGHT_HAVE_PC_PARPORT

  	select ARCH_WANT_IPC_PARSE_VERSION

  	select BUILDTIME_TABLE_SORT

  	select TIMER_OF

  	select CLONE_BACKWARDS3
  	select COMMON_CLK

  	select DMA_DIRECT_REMAP if MMU

  	select GENERIC_ATOMIC64
  	select GENERIC_CLOCKEVENTS
  	select GENERIC_CPU_DEVICES
  	select GENERIC_IDLE_POLL_SETUP

  	select GENERIC_IRQ_PROBE

  	select GENERIC_IRQ_SHOW

  	select GENERIC_PCI_IOMAP

  	select GENERIC_SCHED_CLOCK

  	select HAVE_ARCH_HASH

  	select HAVE_ARCH_KGDB

  	select HAVE_ARCH_SECCOMP

  	select HAVE_DEBUG_KMEMLEAK

  	select HAVE_DMA_CONTIGUOUS

  	select HAVE_DYNAMIC_FTRACE
  	select HAVE_FTRACE_MCOUNT_RECORD
  	select HAVE_FUNCTION_GRAPH_TRACER

  	select HAVE_FUNCTION_TRACER

  	select HAVE_OPROFILE

  	select HAVE_PCI

  	select IRQ_DOMAIN

  	select XILINX_INTC

  	select MODULES_USE_ELF_RELA

  	select OF
  	select OF_EARLY_FLATTREE

  	select PCI_DOMAINS_GENERIC if PCI

  	select PCI_SYSCALL if PCI

  	select TRACING_SUPPORT
  	select VIRT_TO_BUS

  	select CPU_NO_EFFICIENT_FFS

  	select MMU_GATHER_NO_RANGE if MMU

  	select SPARSE_IRQ

  	select SET_FS

  # Endianness selection
  choice
  	prompt "Endianness selection"

  	default CPU_LITTLE_ENDIAN

  	help
  	  microblaze architectures can be configured for either little or
  	  big endian formats. Be sure to select the appropriate mode.
  
  config CPU_BIG_ENDIAN
  	bool "Big endian"
  
  config CPU_LITTLE_ENDIAN
  	bool "Little endian"
  
  endchoice

  config ZONE_DMA
  	def_bool y

  config ARCH_HAS_ILOG2_U32
  	def_bool n
  
  config ARCH_HAS_ILOG2_U64
  	def_bool n

  config GENERIC_HWEIGHT
  	def_bool y

  config GENERIC_CALIBRATE_DELAY
  	def_bool y

  config GENERIC_CSUM
  	def_bool y

  config STACKTRACE_SUPPORT
  	def_bool y

  config LOCKDEP_SUPPORT
  	def_bool y

  source "arch/microblaze/Kconfig.platform"

  
  menu "Processor type and features"

  source "kernel/Kconfig.hz"
  
  config MMU

  	bool "MMU support"
  	default n

  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.

  endmenu

  menu "Kernel features"

  config NR_CPUS
  	int
  	default "1"

  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
  	bool "High memory support"

  	depends on MMU

  	help

  	  The address space of Microblaze processors is only 4 Gigabytes large
  	  and it has to accommodate user address space, kernel address
  	  space as well as some memory mapped IO. That means that, if you
  	  have a large amount of physical memory and/or IO, not all of the
  	  memory can be "permanently mapped" by the kernel. The physical
  	  memory that is not permanently mapped is called "high memory".

  	  If unsure, say n.

  
  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 MANUAL_RESET_VECTOR
  	hex "Microblaze reset vector address setup"
  	default "0x0"
  	help
  	  Set this option to have the kernel override the CPU Reset vector.
  	  If zero, no change will be made to the MicroBlaze reset vector at
  	  address 0x0.
  	  If non-zero, a jump instruction to this address, will be written
  	  to the reset vector at address 0x0.
  	  If you are unsure, set it to default value 0x0.

  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_16K_PAGES
  	bool "16k page size"

  config MICROBLAZE_64K_PAGES
  	bool "64k page size"

  
  endchoice

  endmenu

  menu "Bus Options"

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

  endmenu