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 39source lib/rsa/Kconfig 40 41menu "Hashing Support" 42 43config 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 51config 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 59config 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 67config 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. 75endmenu 76 77endmenu 78