lib/Kconfig

   1 menu "Library routines"
   2
   3 config CC_OPTIMIZE_LIBS_FOR_SPEED
   4         bool "Optimize libraries for speed"
   5         help
   6           Enabling this option will pass "-O2" to gcc when compiling
   7           under "lib" directory.
   8
   9           If unsure, say N.
  10
  11 config HAVE_PRIVATE_LIBGCC
  12         bool
  13
  14 config USE_PRIVATE_LIBGCC
  15         bool "Use private libgcc"
  16         depends on HAVE_PRIVATE_LIBGCC
  17         help
  18           This option allows you to use the built-in libgcc implementation
  19           of U-boot instead of the one privided by the compiler.
  20           If unsure, say N.
  21
  22 config SYS_HZ
  23         int
  24         default 1000
  25         help
  26           The frequency of the timer returned by get_timer().
  27           get_timer() must operate in milliseconds and this option must be
  28           set to 1000.
  29
  30 config SYS_VSNPRINTF
  31         bool "Enable safe version of sprintf()"
  32         help
  33           Since sprintf() can overflow its buffer, it is common to use
  34           snprintf() instead, which knows the buffer size and can avoid
  35           overflow. However, this does increase code size slightly (for
  36           Thumb-2, about 420 bytes). Enable this option for safety when
  37           using sprintf() with data you do not control.
  38
  39 config REGEX
  40         bool "Enable regular expression support"
  41         help
  42           If this variable is defined, U-Boot is linked against the
  43           SLRE (Super Light Regular Expression) library, which adds
  44           regex support to some commands, for example "env grep" and
  45           "setexpr".
  46
  47 config LIB_RAND
  48         bool "Pseudo-random library support "
  49         help
  50           This library provides pseudo-random number generator functions.
  51
  52 source lib/rsa/Kconfig
  53
  54 menu "Hashing Support"
  55
  56 config SHA1
  57         bool "Enable SHA1 support"
  58         help
  59           This option enables support of hashing using SHA1 algorithm.
  60           The hash is calculated in software.
  61           The SHA1 algorithm produces a 160-bit (20-byte) hash value
  62           (digest).
  63
  64 config SHA256
  65         bool "Enable SHA256 support"
  66         help
  67           This option enables support of hashing using SHA256 algorithm.
  68           The hash is calculated in software.
  69           The SHA256 algorithm produces a 256-bit (32-byte) hash value
  70           (digest).
  71
  72 config SHA_HW_ACCEL
  73         bool "Enable hashing using hardware"
  74         help
  75           This option enables hardware acceleration
  76           for SHA1/SHA256 hashing.
  77           This affects the 'hash' command and also the
  78           hash_lookup_algo() function.
  79
  80 config SHA_PROG_HW_ACCEL
  81         bool "Enable Progressive hashing support using hardware"
  82         depends on SHA_HW_ACCEL
  83         help
  84           This option enables hardware-acceleration for
  85           SHA1/SHA256 progressive hashing.
  86           Data can be streamed in a block at a time and the hashing
  87           is performed in hardware.
  88 endmenu
  89
  90 config ERRNO_STR
  91         bool "Enable function for getting errno-related string message"
  92         help
  93           The function errno_str(int errno), returns a pointer to the errno
  94           corresponding text message:
  95           - if errno is null or positive number - a pointer to "Success" message
  96           - if errno is negative - a pointer to errno related message
  97
  98 endmenu