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 source lib/rsa/Kconfig
  40
  41 menu "Hashing Support"
  42
  43 config SHA1
  44         bool "Enable SHA1 support"
  45         help
  46           This option enables support of hashing using SHA1 algorithm.
  47           The hash is calculated in software.
  48           The SHA1 algorithm produces a 160-bit (20-byte) hash value
  49           (digest).
  50
  51 config SHA256
  52         bool "Enable SHA256 support"
  53         help
  54           This option enables support of hashing using SHA256 algorithm.
  55           The hash is calculated in software.
  56           The SHA256 algorithm produces a 256-bit (32-byte) hash value
  57           (digest).
  58
  59 config SHA_HW_ACCEL
  60         bool "Enable hashing using hardware"
  61         help
  62           This option enables hardware acceleration
  63           for SHA1/SHA256 hashing.
  64           This affects the 'hash' command and also the
  65           hash_lookup_algo() function.
  66
  67 config SHA_PROG_HW_ACCEL
  68         bool "Enable Progressive hashing support using hardware"
  69         depends on SHA_HW_ACCEL
  70         help
  71           This option enables hardware-acceleration for
  72           SHA1/SHA256 progressive hashing.
  73           Data can be streamed in a block at a time and the hashing
  74           is performed in hardware.
  75 endmenu
  76
  77 endmenu