mirror of
https://github.com/u-boot/u-boot.git
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315 lines
9.4 KiB
Plaintext
315 lines
9.4 KiB
Plaintext
menu "Library routines"
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config BCH
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bool "Enable Software based BCH ECC"
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help
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Enables software based BCH ECC algorithm present in lib/bch.c
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This is used by SoC platforms which do not have built-in ELM
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hardware engine required for BCH ECC correction.
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config CC_OPTIMIZE_LIBS_FOR_SPEED
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bool "Optimize libraries for speed"
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help
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Enabling this option will pass "-O2" to gcc when compiling
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under "lib" directory.
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If unsure, say N.
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config DYNAMIC_CRC_TABLE
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bool "Enable Dynamic tables for CRC"
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help
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Enable this option to calculate entries for CRC tables at runtime.
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This can be helpful when reducing the size of the build image
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config HAVE_PRIVATE_LIBGCC
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bool
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config LIB_UUID
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bool
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config USE_PRIVATE_LIBGCC
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bool "Use private libgcc"
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depends on HAVE_PRIVATE_LIBGCC
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default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
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help
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This option allows you to use the built-in libgcc implementation
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of U-Boot instead of the one provided by the compiler.
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If unsure, say N.
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config SYS_HZ
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int
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default 1000
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help
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The frequency of the timer returned by get_timer().
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get_timer() must operate in milliseconds and this option must be
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set to 1000.
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config USE_TINY_PRINTF
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bool "Enable tiny printf() version"
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help
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This option enables a tiny, stripped down printf version.
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This should only be used in space limited environments,
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like SPL versions with hard memory limits. This version
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reduces the code size by about 2.5KiB on armv7.
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The supported format specifiers are %c, %s, %u/%d and %x.
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config PANIC_HANG
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bool "Do not reset the system on fatal error"
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help
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Define this option to stop the system in case of a fatal error,
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so that you have to reset it manually. This is probably NOT a good
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idea for an embedded system where you want the system to reboot
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automatically as fast as possible, but it may be useful during
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development since you can try to debug the conditions that lead to
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the situation.
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config REGEX
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bool "Enable regular expression support"
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default y if NET
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help
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If this variable is defined, U-Boot is linked against the
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SLRE (Super Light Regular Expression) library, which adds
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regex support to some commands, for example "env grep" and
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"setexpr".
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choice
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prompt "Pseudo-random library support type"
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depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
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default LIB_RAND
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help
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Select the library to provide pseudo-random number generator
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functions. LIB_HW_RAND supports certain hardware engines that
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provide this functionality. If in doubt, select LIB_RAND.
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config LIB_RAND
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bool "Pseudo-random library support"
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config LIB_HW_RAND
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bool "HW Engine for random libray support"
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endchoice
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config SPL_TINY_MEMSET
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bool "Use a very small memset() in SPL"
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help
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The faster memset() is the arch-specific one (if available) enabled
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by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
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better performance by writing a word at a time. But in very
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size-constrained envrionments even this may be too big. Enable this
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option to reduce code size slightly at the cost of some speed.
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config TPL_TINY_MEMSET
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bool "Use a very small memset() in TPL"
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help
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The faster memset() is the arch-specific one (if available) enabled
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by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
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better performance by writing a word at a time. But in very
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size-constrained envrionments even this may be too big. Enable this
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option to reduce code size slightly at the cost of some speed.
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config RBTREE
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bool
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config BITREVERSE
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bool "Bit reverse library from Linux"
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source lib/dhry/Kconfig
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menu "Security support"
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config AES
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bool "Support the AES algorithm"
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help
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This provides a means to encrypt and decrypt data using the AES
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(Advanced Encryption Standard). This algorithm uses a symetric key
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and is widely used as a streaming cipher. Different key lengths are
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supported by the algorithm but only a 128-bit key is supported at
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present.
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source lib/rsa/Kconfig
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config TPM
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bool "Trusted Platform Module (TPM) Support"
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depends on DM
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help
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This enables support for TPMs which can be used to provide security
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features for your board. The TPM can be connected via LPC or I2C
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and a sandbox TPM is provided for testing purposes. Use the 'tpm'
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command to interactive the TPM. Driver model support is provided
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for the low-level TPM interface, but only one TPM is supported at
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a time by the TPM library.
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endmenu
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menu "Hashing Support"
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config SHA1
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bool "Enable SHA1 support"
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help
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This option enables support of hashing using SHA1 algorithm.
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The hash is calculated in software.
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The SHA1 algorithm produces a 160-bit (20-byte) hash value
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(digest).
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config SHA256
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bool "Enable SHA256 support"
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help
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This option enables support of hashing using SHA256 algorithm.
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The hash is calculated in software.
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The SHA256 algorithm produces a 256-bit (32-byte) hash value
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(digest).
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config SHA_HW_ACCEL
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bool "Enable hashing using hardware"
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help
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This option enables hardware acceleration
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for SHA1/SHA256 hashing.
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This affects the 'hash' command and also the
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hash_lookup_algo() function.
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config SHA_PROG_HW_ACCEL
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bool "Enable Progressive hashing support using hardware"
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depends on SHA_HW_ACCEL
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help
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This option enables hardware-acceleration for
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SHA1/SHA256 progressive hashing.
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Data can be streamed in a block at a time and the hashing
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is performed in hardware.
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config MD5
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bool
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config CRC32C
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bool
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endmenu
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menu "Compression Support"
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config LZ4
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bool "Enable LZ4 decompression support"
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help
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If this option is set, support for LZ4 compressed images
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is included. The LZ4 algorithm can run in-place as long as the
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compressed image is loaded to the end of the output buffer, and
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trades lower compression ratios for much faster decompression.
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NOTE: This implements the release version of the LZ4 frame
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format as generated by default by the 'lz4' command line tool.
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This is not the same as the outdated, less efficient legacy
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frame format currently (2015) implemented in the Linux kernel
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(generated by 'lz4 -l'). The two formats are incompatible.
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config LZMA
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bool "Enable LZMA decompression support"
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help
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This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
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a dictionary compression algorithm that provides a high compression
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ratio and fairly fast decompression speed. See also
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CONFIG_CMD_LZMADEC which provides a decode command.
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config LZO
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bool "Enable LZO decompression support"
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help
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This enables support for LZO compression algorithm.r
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config SPL_LZO
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bool "Enable LZO decompression support in SPL"
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help
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This enables support for LZO compression algorithm in the SPL.
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config SPL_GZIP
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bool "Enable gzip decompression support for SPL build"
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select SPL_ZLIB
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help
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This enables support for GZIP compression altorithm for SPL boot.
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config SPL_ZLIB
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bool
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help
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This enables compression lib for SPL boot.
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endmenu
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config ERRNO_STR
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bool "Enable function for getting errno-related string message"
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help
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The function errno_str(int errno), returns a pointer to the errno
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corresponding text message:
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- if errno is null or positive number - a pointer to "Success" message
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- if errno is negative - a pointer to errno related message
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config OF_LIBFDT
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bool "Enable the FDT library"
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default y if OF_CONTROL
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help
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This enables the FDT library (libfdt). It provides functions for
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accessing binary device tree images in memory, such as adding and
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removing nodes and properties, scanning through the tree and finding
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particular compatible nodes. The library operates on a flattened
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version of the device tree.
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config OF_LIBFDT_OVERLAY
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bool "Enable the FDT library overlay support"
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help
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This enables the FDT library (libfdt) overlay support.
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config SPL_OF_LIBFDT
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bool "Enable the FDT library for SPL"
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default y if SPL_OF_CONTROL
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help
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This enables the FDT library (libfdt). It provides functions for
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accessing binary device tree images in memory, such as adding and
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removing nodes and properties, scanning through the tree and finding
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particular compatible nodes. The library operates on a flattened
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version of the device tree.
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config FDT_FIXUP_PARTITIONS
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bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
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depends on OF_LIBFDT
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default n
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help
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Allow overwriting defined partitions in the device tree blob
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using partition info defined in the 'mtdparts' environment
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variable.
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menu "System tables"
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depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
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config GENERATE_SMBIOS_TABLE
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bool "Generate an SMBIOS (System Management BIOS) table"
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default y
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depends on X86 || EFI_LOADER
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help
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The System Management BIOS (SMBIOS) specification addresses how
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motherboard and system vendors present management information about
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their products in a standard format by extending the BIOS interface
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on Intel architecture systems.
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Check http://www.dmtf.org/standards/smbios for details.
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config SMBIOS_MANUFACTURER
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string "SMBIOS Manufacturer"
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depends on GENERATE_SMBIOS_TABLE
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default SYS_VENDOR
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help
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The board manufacturer to store in SMBIOS structures.
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Change this to override the default one (CONFIG_SYS_VENDOR).
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config SMBIOS_PRODUCT_NAME
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string "SMBIOS Product Name"
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depends on GENERATE_SMBIOS_TABLE
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default SYS_BOARD
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help
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The product name to store in SMBIOS structures.
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Change this to override the default one (CONFIG_SYS_BOARD).
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endmenu
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source lib/efi/Kconfig
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source lib/efi_loader/Kconfig
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source lib/optee/Kconfig
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endmenu
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