| 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 |