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380 lines
11 KiB
380 lines
11 KiB
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 PRINTF |
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bool |
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default y |
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config SPL_PRINTF |
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bool |
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select SPL_SPRINTF |
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select SPL_STRTO if !USE_TINY_PRINTF |
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config TPL_PRINTF |
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bool |
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select TPL_SPRINTF |
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select TPL_STRTO if !USE_TINY_PRINTF |
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config SPRINTF |
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bool |
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default y |
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config SPL_SPRINTF |
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bool |
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config TPL_SPRINTF |
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bool |
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config STRTO |
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bool |
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default y |
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config SPL_STRTO |
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bool |
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config TPL_STRTO |
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bool |
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config IMAGE_SPARSE |
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bool |
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config IMAGE_SPARSE_FILLBUF_SIZE |
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hex "Android sparse image CHUNK_TYPE_FILL buffer size" |
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default 0x80000 |
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depends on IMAGE_SPARSE |
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help |
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Set the size of the fill buffer used when processing CHUNK_TYPE_FILL |
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chunks. |
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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 "Android Verified Boot" |
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config LIBAVB |
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bool "Android Verified Boot 2.0 support" |
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depends on ANDROID_BOOT_IMAGE |
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default n |
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help |
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This enables support of Android Verified Boot 2.0 which can be used |
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to assure the end user of the integrity of the software running on a |
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device. Introduces such features as boot chain of trust, rollback |
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protection etc. |
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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 HEXDUMP |
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bool "Enable hexdump" |
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help |
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This enables functions for printing dumps of binary data. |
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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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depends on OF_LIBFDT |
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default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE |
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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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depends on CMD_MTDPARTS |
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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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