| 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 SYS_VSNPRINTF |
| bool "Enable safe version of sprintf()" |
| help |
| Since sprintf() can overflow its buffer, it is common to use |
| snprintf() instead, which knows the buffer size and can avoid |
| overflow. However, this does increase code size slightly (for |
| Thumb-2, about 420 bytes). Enable this option for safety when |
| using sprintf() with data you do not control. |
| |
| config USE_TINY_PRINTF |
| bool "Enable tiny printf() version" |
| help |
| This option enables a tiny, stripped down printf version. |
| This should only be used in space limited environments, |
| like SPL versions with hard memory limits. This version |
| reduces the code size by about 2.5KiB on armv7. |
| |
| The supported format specifiers are %c, %s, %u/%d and %x. |
| |
| config REGEX |
| bool "Enable regular expression support" |
| default y if NET |
| help |
| If this variable is defined, U-Boot is linked against the |
| SLRE (Super Light Regular Expression) library, which adds |
| regex support to some commands, for example "env grep" and |
| "setexpr". |
| |
| config LIB_RAND |
| bool "Pseudo-random library support " |
| help |
| This library provides pseudo-random number generator functions. |
| |
| source lib/dhry/Kconfig |
| |
| source lib/rsa/Kconfig |
| |
| config TPM |
| bool "Trusted Platform Module (TPM) Support" |
| depends on DM |
| help |
| This enables support for TPMs which can be used to provide security |
| features for your board. The TPM can be connected via LPC or I2C |
| and a sandbox TPM is provided for testing purposes. Use the 'tpm' |
| command to interactive the TPM. Driver model support is provided |
| for the low-level TPM interface, but only one TPM is supported at |
| a time by the TPM library. |
| |
| menu "Hashing Support" |
| |
| config SHA1 |
| bool "Enable SHA1 support" |
| help |
| This option enables support of hashing using SHA1 algorithm. |
| The hash is calculated in software. |
| The SHA1 algorithm produces a 160-bit (20-byte) hash value |
| (digest). |
| |
| config SHA256 |
| bool "Enable SHA256 support" |
| help |
| This option enables support of hashing using SHA256 algorithm. |
| The hash is calculated in software. |
| The SHA256 algorithm produces a 256-bit (32-byte) hash value |
| (digest). |
| |
| config SHA_HW_ACCEL |
| bool "Enable hashing using hardware" |
| help |
| This option enables hardware acceleration |
| for SHA1/SHA256 hashing. |
| This affects the 'hash' command and also the |
| hash_lookup_algo() function. |
| |
| config SHA_PROG_HW_ACCEL |
| bool "Enable Progressive hashing support using hardware" |
| depends on SHA_HW_ACCEL |
| help |
| This option enables hardware-acceleration for |
| SHA1/SHA256 progressive hashing. |
| Data can be streamed in a block at a time and the hashing |
| is performed in hardware. |
| endmenu |
| |
| menu "Compression Support" |
| |
| config LZ4 |
| bool "Enable LZ4 decompression support" |
| help |
| If this option is set, support for LZ4 compressed images |
| is included. The LZ4 algorithm can run in-place as long as the |
| compressed image is loaded to the end of the output buffer, and |
| trades lower compression ratios for much faster decompression. |
| |
| NOTE: This implements the release version of the LZ4 frame |
| format as generated by default by the 'lz4' command line tool. |
| This is not the same as the outdated, less efficient legacy |
| frame format currently (2015) implemented in the Linux kernel |
| (generated by 'lz4 -l'). The two formats are incompatible. |
| |
| config LZMA |
| bool "Enable LZMA decompression support" |
| help |
| If this option is set, support for LZMA compressed images |
| is included. The LZMA algorithm can run in-place as long as the |
| compressed image is loaded to the end of the output buffer, and |
| trades high compression ratios and fairly fast decompression speed. |
| |
| endmenu |
| |
| config ERRNO_STR |
| bool "Enable function for getting errno-related string message" |
| help |
| The function errno_str(int errno), returns a pointer to the errno |
| corresponding text message: |
| - if errno is null or positive number - a pointer to "Success" message |
| - if errno is negative - a pointer to errno related message |
| |
| source lib/efi/Kconfig |
| |
| endmenu |
