#
  # For a description of the syntax of this configuration file,

  # see the file Documentation/kbuild/kconfig-language.txt in the
  # Linux kernel source tree.

  #
  mainmenu "U-Boot $UBOOTVERSION Configuration"
  
  config UBOOTVERSION
  	string
  	option env="UBOOTVERSION"

  # Allow defaults in arch-specific code to override any given here
  source "arch/Kconfig"

  menu "General setup"

  config LOCALVERSION
  	string "Local version - append to U-Boot release"

  	help
  	  Append an extra string to the end of your U-Boot version.

  	  This will show up in your boot log, for example.

  	  The string you set here will be appended after the contents of
  	  any files with a filename matching localversion* in your
  	  object and source tree, in that order.  Your total string can
  	  be a maximum of 64 characters.
  
  config LOCALVERSION_AUTO
  	bool "Automatically append version information to the version string"

  	default y
  	help
  	  This will try to automatically determine if the current tree is a

  	  release tree by looking for Git tags that belong to the current

  	  top of tree revision.
  
  	  A string of the format -gxxxxxxxx will be added to the localversion

  	  if a Git-based tree is found.  The string generated by this will be

  	  appended after any matching localversion* files, and after the value
  	  set in CONFIG_LOCALVERSION.
  
  	  (The actual string used here is the first eight characters produced
  	  by running the command:
  
  	    $ git rev-parse --verify HEAD
  
  	  which is done within the script "scripts/setlocalversion".)

  config CC_OPTIMIZE_FOR_SIZE
  	bool "Optimize for size"

  	default y
  	help
  	  Enabling this option will pass "-Os" instead of "-O2" to gcc
  	  resulting in a smaller U-Boot image.
  
  	  This option is enabled by default for U-Boot.

  config SYS_MALLOC_F
  	bool "Enable malloc() pool before relocation"

  	default y if DM

  	help

  	  Before relocation, memory is very limited on many platforms. Still,

  	  we can provide a small malloc() pool if needed. Driver model in
  	  particular needs this to operate, so that it can allocate the
  	  initial serial device and any others that are needed.
  
  config SYS_MALLOC_F_LEN
  	hex "Size of malloc() pool before relocation"
  	depends on SYS_MALLOC_F
  	default 0x400
  	help

  	  Before relocation, memory is very limited on many platforms. Still,

  	  we can provide a small malloc() pool if needed. Driver model in
  	  particular needs this to operate, so that it can allocate the
  	  initial serial device and any others that are needed.

  menuconfig EXPERT

  	bool "Configure standard U-Boot features (expert users)"
  	default y
  	help
  	  This option allows certain base U-Boot options and settings
  	  to be disabled or tweaked. This is for specialized
  	  environments which can tolerate a "non-standard" U-Boot.

  	  Use this only if you really know what you are doing.

  
  if EXPERT
  	config SYS_MALLOC_CLEAR_ON_INIT
  	bool "Init with zeros the memory reserved for malloc (slow)"
  	default y
  	help
  	  This setting is enabled by default. The reserved malloc
  	  memory is initialized with zeros, so first malloc calls
  	  will return the pointer to the zeroed memory. But this
  	  slows the boot time.
  
  	  It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
  	  value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
  	  Then the boot time can be significantly reduced.
  	  Warning:
  	  When disabling this, please check if malloc calls, maybe

  	  should be replaced by calloc - if one expects zeroed memory.

  endif

  endmenu		# General setup

  menu "Boot images"

  config SUPPORT_SPL
  	bool

  config SUPPORT_TPL
  	bool

  config SPL
  	bool

  	depends on SUPPORT_SPL

  	prompt "Enable SPL"

  	help
  	  If you want to build SPL as well as the normal image, say Y.

  config SPL_SYS_MALLOC_SIMPLE
  	bool
  	depends on SPL

  	prompt "Only use malloc_simple functions in the SPL"

  	help
  	  Say Y here to only use the *_simple malloc functions from

  	  malloc_simple.c, rather then using the versions from dlmalloc.c;

  	  this will make the SPL binary smaller at the cost of more heap
  	  usage as the *_simple malloc functions do not re-use free-ed mem.

  config SPL_STACK_R
  	depends on SPL
  	bool "Enable SDRAM location for SPL stack"
  	help
  	  SPL starts off execution in SRAM and thus typically has only a small
  	  stack available. Since SPL sets up DRAM while in its board_init_f()
  	  function, it is possible for the stack to move there before
  	  board_init_r() is reached. This option enables a special SDRAM
  	  location for the SPL stack. U-Boot SPL switches to this after
  	  board_init_f() completes, and before board_init_r() starts.
  
  config SPL_STACK_R_ADDR
  	depends on SPL_STACK_R
  	hex "SDRAM location for SPL stack"
  	help
  	  Specify the address in SDRAM for the SPL stack. This will be set up
  	  before board_init_r() is called.

  config SPL_STACK_R_MALLOC_SIMPLE_LEN
  	depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
  	hex "Size of malloc_simple heap after switching to DRAM SPL stack"
  	default 0x100000
  	help
  	  Specify the amount of the stack to use as memory pool for
  	  malloc_simple after switching the stack to DRAM. This may be set
  	  to give board_init_r() a larger heap then the initial heap in
  	  SRAM which is limited to SYS_MALLOC_F_LEN bytes.

  config SPL_SEPARATE_BSS
  	depends on SPL
  	bool "BSS section is in a different memory region from text"
  	help
  	  Some platforms need a large BSS region in SPL and can provide this
  	  because RAM is already set up. In this case BSS can be moved to RAM.
  	  This option should then be enabled so that the correct device tree
  	  location is used. Normally we put the device tree at the end of BSS
  	  but with this option enabled, it goes at _image_binary_end.

  config TPL
  	bool

  	depends on SPL && SUPPORT_TPL

  	prompt "Enable TPL"

  	help
  	  If you want to build TPL as well as the normal image and SPL, say Y.

  config FIT
  	bool "Support Flattened Image Tree"

  	help
  	  This option allows to boot the new uImage structrure,
  	  Flattened Image Tree.  FIT is formally a FDT, which can include
  	  images of various types (kernel, FDT blob, ramdisk, etc.)
  	  in a single blob.  To boot this new uImage structure,

  	  pass the address of the blob to the "bootm" command.

  	  FIT is very flexible, supporting compression, multiple images,
  	  multiple configurations, verification through hashing and also
  	  verified boot (secure boot using RSA). This option enables that
  	  feature.

  
  config FIT_VERBOSE
  	bool "Display verbose messages on FIT boot"
  	depends on FIT
  
  config FIT_SIGNATURE

  	bool "Enable signature verification of FIT uImages"

  	depends on FIT

  	depends on DM

  	select RSA

  	help
  	  This option enables signature verification of FIT uImages,

  	  using a hash signed and verified using RSA. If
  	  CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive

  	  hashing is available using hardware, then then RSA library will use
  	  it. See doc/uImage.FIT/signature.txt for more details.
  
  	  WARNING: When relying on signed FIT images with a required signature
  	  check the legacy image format is disabled by default, so that
  	  unsigned images cannot be loaded. If a board needs the legacy image
  	  format support in this case, enable it using
  	  CONFIG_IMAGE_FORMAT_LEGACY.
  
  config FIT_BEST_MATCH
  	bool "Select the best match for the kernel device tree"
  	depends on FIT
  	help
  	  When no configuration is explicitly selected, default to the
  	  one whose fdt's compatibility field best matches that of
  	  U-Boot itself. A match is considered "best" if it matches the
  	  most specific compatibility entry of U-Boot's fdt's root node.
  	  The order of entries in the configuration's fdt is ignored.
  
  config FIT_VERBOSE
  	bool "Show verbose messages when FIT images fails"
  	depends on FIT
  	help
  	  Generally a system will have valid FIT images so debug messages
  	  are a waste of code space. If you are debugging your images then
  	  you can enable this option to get more verbose information about
  	  failures.
  
  config OF_BOARD_SETUP
  	bool "Set up board-specific details in device tree before boot"
  	depends on OF_LIBFDT
  	help
  	  This causes U-Boot to call ft_board_setup() before booting into
  	  the Operating System. This function can set up various
  	  board-specific information in the device tree for use by the OS.
  	  The device tree is then passed to the OS.
  
  config OF_SYSTEM_SETUP
  	bool "Set up system-specific details in device tree before boot"
  	depends on OF_LIBFDT
  	help
  	  This causes U-Boot to call ft_system_setup() before booting into
  	  the Operating System. This function can set up various
  	  system-specific information in the device tree for use by the OS.
  	  The device tree is then passed to the OS.
  
  config OF_STDOUT_VIA_ALIAS
  	bool "Update the device-tree stdout alias from U-Boot"
  	depends on OF_LIBFDT
  	help
  	  This uses U-Boot's serial alias from the aliases node to update
  	  the device tree passed to the OS. The "linux,stdout-path" property
  	  in the chosen node is set to point to the correct serial node.
  	  This option currently references CONFIG_CONS_INDEX, which is
  	  incorrect when used with device tree as this option does not
  	  exist / should not be used.

  config SYS_EXTRA_OPTIONS
  	string "Extra Options (DEPRECATED)"

  	help
  	  The old configuration infrastructure (= mkconfig + boards.cfg)

  	  provided the extra options field. If you have something like

  	  "HAS_BAR,BAZ=64", the optional options
  	    #define CONFIG_HAS
  	    #define CONFIG_BAZ	64
  	  will be defined in include/config.h.
  	  This option was prepared for the smooth migration from the old
  	  configuration to Kconfig. Since this option will be removed sometime,
  	  new boards should not use this option.

  config SYS_TEXT_BASE

  	depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \

  		(M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE

  	depends on !EFI_APP

  	hex "Text Base"
  	help
  	  TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture

  config SPL_LOAD_FIT
  	bool "Enable SPL loading U-Boot as a FIT"
  	depends on FIT
  	help
  	  Normally with the SPL framework a legacy image is generated as part
  	  of the build. This contains U-Boot along with information as to
  	  where it should be loaded. This option instead enables generation
  	  of a FIT (Flat Image Tree) which provides more flexibility. In
  	  particular it can handle selecting from multiple device tree
  	  and passing the correct one to U-Boot.

  config SYS_CLK_FREQ

  	depends on ARC || ARCH_SUNXI

  	int "CPU clock frequency"
  	help
  	  TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture

  endmenu		# Boot images

  source "common/Kconfig"

  source "cmd/Kconfig"

  source "dts/Kconfig"

  source "net/Kconfig"
  
  source "drivers/Kconfig"
  
  source "fs/Kconfig"
  
  source "lib/Kconfig"

  
  source "test/Kconfig"