menu "Library routines" config CC_OPTIMIZE_LIBS_FOR_SPEED bool "Optimize libraries for speed" help Enabling this option will pass "-O2" to gcc when compiling under "lib" directory. If unsure, say N. config HAVE_PRIVATE_LIBGCC bool config USE_PRIVATE_LIBGCC bool "Use private libgcc" depends on HAVE_PRIVATE_LIBGCC help This option allows you to use the built-in libgcc implementation of U-boot instead of the one privided by the compiler. If unsure, say N. config SYS_HZ int default 1000 help The frequency of the timer returned by get_timer(). get_timer() must operate in milliseconds and this option must be set to 1000. config RSA bool "Use RSA Library" help RSA support. This enables the RSA algorithm used for FIT image verification in U-Boot. See doc/uImage.FIT/signature.txt for more details. endmenu