Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5 mainmenu "U-Boot $UBOOTVERSION Configuration"
   6
   7 config UBOOTVERSION
   8         string
   9         option env="UBOOTVERSION"
  10
  11 # Allow defaults in arch-specific code to override any given here
  12 source "arch/Kconfig"
  13
  14 menu "General setup"
  15
  16 config LOCALVERSION
  17         string "Local version - append to U-Boot release"
  18         help
  19           Append an extra string to the end of your U-Boot version.
  20           This will show up on your boot log, for example.
  21           The string you set here will be appended after the contents of
  22           any files with a filename matching localversion* in your
  23           object and source tree, in that order.  Your total string can
  24           be a maximum of 64 characters.
  25
  26 config LOCALVERSION_AUTO
  27         bool "Automatically append version information to the version string"
  28         default y
  29         help
  30           This will try to automatically determine if the current tree is a
  31           release tree by looking for git tags that belong to the current
  32           top of tree revision.
  33
  34           A string of the format -gxxxxxxxx will be added to the localversion
  35           if a git-based tree is found.  The string generated by this will be
  36           appended after any matching localversion* files, and after the value
  37           set in CONFIG_LOCALVERSION.
  38
  39           (The actual string used here is the first eight characters produced
  40           by running the command:
  41
  42             $ git rev-parse --verify HEAD
  43
  44           which is done within the script "scripts/setlocalversion".)
  45
  46 config CC_OPTIMIZE_FOR_SIZE
  47         bool "Optimize for size"
  48         default y
  49         help
  50           Enabling this option will pass "-Os" instead of "-O2" to gcc
  51           resulting in a smaller U-Boot image.
  52
  53           This option is enabled by default for U-Boot.
  54
  55 config SYS_MALLOC_F
  56         bool "Enable malloc() pool before relocation"
  57         default y if DM
  58         help
  59           Before relocation memory is very limited on many platforms. Still,
  60           we can provide a small malloc() pool if needed. Driver model in
  61           particular needs this to operate, so that it can allocate the
  62           initial serial device and any others that are needed.
  63
  64 config SYS_MALLOC_F_LEN
  65         hex "Size of malloc() pool before relocation"
  66         depends on SYS_MALLOC_F
  67         default 0x400
  68         help
  69           Before relocation memory is very limited on many platforms. Still,
  70           we can provide a small malloc() pool if needed. Driver model in
  71           particular needs this to operate, so that it can allocate the
  72           initial serial device and any others that are needed.
  73
  74 menuconfig EXPERT
  75         bool "Configure standard U-Boot features (expert users)"
  76         default y
  77         help
  78           This option allows certain base U-Boot options and settings
  79           to be disabled or tweaked. This is for specialized
  80           environments which can tolerate a "non-standard" U-Boot.
  81           Only use this if you really know what you are doing.
  82
  83 if EXPERT
  84         config SYS_MALLOC_CLEAR_ON_INIT
  85         bool "Init with zeros the memory reserved for malloc (slow)"
  86         default y
  87         help
  88           This setting is enabled by default. The reserved malloc
  89           memory is initialized with zeros, so first malloc calls
  90           will return the pointer to the zeroed memory. But this
  91           slows the boot time.
  92
  93           It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
  94           value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
  95           Then the boot time can be significantly reduced.
  96           Warning:
  97           When disabling this, please check if malloc calls, maybe
  98           should be replaced by calloc - if expects zeroed memory.
  99 endif
 100 endmenu         # General setup
 101
 102 menu "Boot images"
 103
 104 config SUPPORT_SPL
 105         bool
 106
 107 config SUPPORT_TPL
 108         bool
 109
 110 config SPL
 111         bool
 112         depends on SUPPORT_SPL
 113         prompt "Enable SPL"
 114         help
 115           If you want to build SPL as well as the normal image, say Y.
 116
 117 config SPL_SYS_MALLOC_SIMPLE
 118         bool
 119         depends on SPL
 120         prompt "Only use malloc_simple functions in the spl"
 121         help
 122           Say Y here to only use the *_simple malloc functions from
 123           malloc_simple.c, rather then using the versions from dlmalloc.c
 124           this will make the SPL binary smaller at the cost of more heap
 125           usage as the *_simple malloc functions do not re-use free-ed mem.
 126
 127 config SPL_STACK_R
 128         depends on SPL
 129         bool "Enable SDRAM location for SPL stack"
 130         help
 131           SPL starts off execution in SRAM and thus typically has only a small
 132           stack available. Since SPL sets up DRAM while in its board_init_f()
 133           function, it is possible for the stack to move there before
 134           board_init_r() is reached. This option enables a special SDRAM
 135           location for the SPL stack. U-Boot SPL switches to this after
 136           board_init_f() completes, and before board_init_r() starts.
 137
 138 config SPL_STACK_R_ADDR
 139         depends on SPL_STACK_R
 140         hex "SDRAM location for SPL stack"
 141         help
 142           Specify the address in SDRAM for the SPL stack. This will be set up
 143           before board_init_r() is called.
 144
 145 config SPL_STACK_R_MALLOC_SIMPLE_LEN
 146         depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
 147         hex "Size of malloc_simple heap after switching to DRAM SPL stack"
 148         default 0x100000
 149         help
 150           Specify the amount of the stack to use as memory pool for
 151           malloc_simple after switching the stack to DRAM. This may be set
 152           to give board_init_r() a larger heap then the initial heap in
 153           SRAM which is limited to SYS_MALLOC_F_LEN bytes.
 154
 155 config TPL
 156         bool
 157         depends on SPL && SUPPORT_TPL
 158         prompt "Enable TPL"
 159         help
 160           If you want to build TPL as well as the normal image and SPL, say Y.
 161
 162 config FIT
 163         bool "Support Flattened Image Tree"
 164         help
 165           This option allows to boot the new uImage structrure,
 166           Flattened Image Tree.  FIT is formally a FDT, which can include
 167           images of various types (kernel, FDT blob, ramdisk, etc.)
 168           in a single blob.  To boot this new uImage structure,
 169           pass the address of the blob to the "bootm" command.
 170
 171 config FIT_VERBOSE
 172         bool "Display verbose messages on FIT boot"
 173         depends on FIT
 174
 175 config FIT_SIGNATURE
 176         bool "Enable signature verification of FIT uImages"
 177         depends on FIT
 178         depends on DM
 179         select RSA
 180         help
 181           This option enables signature verification of FIT uImages,
 182           using a hash signed and verified using RSA. If
 183           CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
 184           hashing is available using hardware, RSA library will use it.
 185           See doc/uImage.FIT/signature.txt for more details.
 186
 187 config SYS_EXTRA_OPTIONS
 188         string "Extra Options (DEPRECATED)"
 189         help
 190           The old configuration infrastructure (= mkconfig + boards.cfg)
 191           provided the extra options field. If you have something like
 192           "HAS_BAR,BAZ=64", the optional options
 193             #define CONFIG_HAS
 194             #define CONFIG_BAZ  64
 195           will be defined in include/config.h.
 196           This option was prepared for the smooth migration from the old
 197           configuration to Kconfig. Since this option will be removed sometime,
 198           new boards should not use this option.
 199
 200 config SYS_TEXT_BASE
 201         depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP
 202         depends on !EFI_APP
 203         hex "Text Base"
 204         help
 205           TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
 206
 207 config SYS_CLK_FREQ
 208         depends on ARC || ARCH_SUNXI
 209         int "CPU clock frequency"
 210         help
 211           TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
 212
 213 endmenu         # Boot images
 214
 215 source "common/Kconfig"
 216
 217 source "dts/Kconfig"
 218
 219 source "net/Kconfig"
 220
 221 source "drivers/Kconfig"
 222
 223 source "fs/Kconfig"
 224
 225 source "lib/Kconfig"
 226
 227 source "test/Kconfig"