1menu "Library routines" 2 3config 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 11config HAVE_PRIVATE_LIBGCC 12 bool 13 14config 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 22config 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 30config 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 39config REGEX 40 bool "Enable regular expression support" 41 default y if NET 42 help 43 If this variable is defined, U-Boot is linked against the 44 SLRE (Super Light Regular Expression) library, which adds 45 regex support to some commands, for example "env grep" and 46 "setexpr". 47 48config LIB_RAND 49 bool "Pseudo-random library support " 50 help 51 This library provides pseudo-random number generator functions. 52 53source lib/dhry/Kconfig 54 55source lib/rsa/Kconfig 56 57menu "Hashing Support" 58 59config SHA1 60 bool "Enable SHA1 support" 61 help 62 This option enables support of hashing using SHA1 algorithm. 63 The hash is calculated in software. 64 The SHA1 algorithm produces a 160-bit (20-byte) hash value 65 (digest). 66 67config SHA256 68 bool "Enable SHA256 support" 69 help 70 This option enables support of hashing using SHA256 algorithm. 71 The hash is calculated in software. 72 The SHA256 algorithm produces a 256-bit (32-byte) hash value 73 (digest). 74 75config SHA_HW_ACCEL 76 bool "Enable hashing using hardware" 77 help 78 This option enables hardware acceleration 79 for SHA1/SHA256 hashing. 80 This affects the 'hash' command and also the 81 hash_lookup_algo() function. 82 83config SHA_PROG_HW_ACCEL 84 bool "Enable Progressive hashing support using hardware" 85 depends on SHA_HW_ACCEL 86 help 87 This option enables hardware-acceleration for 88 SHA1/SHA256 progressive hashing. 89 Data can be streamed in a block at a time and the hashing 90 is performed in hardware. 91endmenu 92 93config ERRNO_STR 94 bool "Enable function for getting errno-related string message" 95 help 96 The function errno_str(int errno), returns a pointer to the errno 97 corresponding text message: 98 - if errno is null or positive number - a pointer to "Success" message 99 - if errno is negative - a pointer to errno related message 100 101endmenu 102