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 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 47config LIB_RAND 48 bool "Pseudo-random library support " 49 help 50 This library provides pseudo-random number generator functions. 51 52source lib/rsa/Kconfig 53 54menu "Hashing Support" 55 56config 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 64config 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 72config 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 80config 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. 88endmenu 89 90config 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 98endmenu 99