menu "Library routines"
+config BCH
+ bool "Enable Software based BCH ECC"
+ help
+ Enables software based BCH ECC algorithm present in lib/bch.c
+ This is used by SoC platforms which do not have built-in ELM
+ hardware engine required for BCH ECC correction.
+
config CC_OPTIMIZE_LIBS_FOR_SPEED
bool "Optimize libraries for speed"
help
If unsure, say N.
+config DYNAMIC_CRC_TABLE
+ bool "Enable Dynamic tables for CRC"
+ help
+ Enable this option to calculate entries for CRC tables at runtime.
+ This can be helpful when reducing the size of the build image
+
config HAVE_PRIVATE_LIBGCC
bool
+config LIB_UUID
+ bool
+
+config PRINTF
+ bool
+ default y
+
+config SPL_PRINTF
+ bool
+ select SPL_SPRINTF
+ select SPL_STRTO if !USE_TINY_PRINTF
+
+config TPL_PRINTF
+ bool
+ select TPL_SPRINTF
+ select TPL_STRTO if !USE_TINY_PRINTF
+
+config SPRINTF
+ bool
+ default y
+
+config SPL_SPRINTF
+ bool
+
+config TPL_SPRINTF
+ bool
+
+config STRTO
+ bool
+ default y
+
+config SPL_STRTO
+ bool
+
+config TPL_STRTO
+ bool
+
+config IMAGE_SPARSE
+ bool
+
+config IMAGE_SPARSE_FILLBUF_SIZE
+ hex "Android sparse image CHUNK_TYPE_FILL buffer size"
+ default 0x80000
+ depends on IMAGE_SPARSE
+ help
+ Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
+ chunks.
+
config USE_PRIVATE_LIBGCC
bool "Use private libgcc"
depends on HAVE_PRIVATE_LIBGCC
The supported format specifiers are %c, %s, %u/%d and %x.
+config PANIC_HANG
+ bool "Do not reset the system on fatal error"
+ help
+ Define this option to stop the system in case of a fatal error,
+ so that you have to reset it manually. This is probably NOT a good
+ idea for an embedded system where you want the system to reboot
+ automatically as fast as possible, but it may be useful during
+ development since you can try to debug the conditions that lead to
+ the situation.
+
config REGEX
bool "Enable regular expression support"
default y if NET
regex support to some commands, for example "env grep" and
"setexpr".
-config LIB_RAND
- bool "Pseudo-random library support "
+choice
+ prompt "Pseudo-random library support type"
+ depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
+ default LIB_RAND
help
- This library provides pseudo-random number generator functions.
+ Select the library to provide pseudo-random number generator
+ functions. LIB_HW_RAND supports certain hardware engines that
+ provide this functionality. If in doubt, select LIB_RAND.
+
+config LIB_RAND
+ bool "Pseudo-random library support"
+
+config LIB_HW_RAND
+ bool "HW Engine for random libray support"
+
+endchoice
config SPL_TINY_MEMSET
bool "Use a very small memset() in SPL"
size-constrained envrionments even this may be too big. Enable this
option to reduce code size slightly at the cost of some speed.
+config TPL_TINY_MEMSET
+ bool "Use a very small memset() in TPL"
+ help
+ The faster memset() is the arch-specific one (if available) enabled
+ by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
+ better performance by writing a word at a time. But in very
+ size-constrained envrionments even this may be too big. Enable this
+ option to reduce code size slightly at the cost of some speed.
+
config RBTREE
bool
+config BITREVERSE
+ bool "Bit reverse library from Linux"
+
source lib/dhry/Kconfig
+menu "Security support"
+
+config AES
+ bool "Support the AES algorithm"
+ help
+ This provides a means to encrypt and decrypt data using the AES
+ (Advanced Encryption Standard). This algorithm uses a symetric key
+ and is widely used as a streaming cipher. Different key lengths are
+ supported by the algorithm but only a 128-bit key is supported at
+ present.
+
source lib/rsa/Kconfig
config TPM
for the low-level TPM interface, but only one TPM is supported at
a time by the TPM library.
+endmenu
+
+menu "Android Verified Boot"
+
+config LIBAVB
+ bool "Android Verified Boot 2.0 support"
+ depends on ANDROID_BOOT_IMAGE
+ default n
+ help
+ This enables support of Android Verified Boot 2.0 which can be used
+ to assure the end user of the integrity of the software running on a
+ device. Introduces such features as boot chain of trust, rollback
+ protection etc.
+
+endmenu
+
menu "Hashing Support"
config SHA1
config MD5
bool
+config CRC32C
+ bool
+
endmenu
menu "Compression Support"
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
+ This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
+ a dictionary compression algorithm that provides a high compression
+ ratio and fairly fast decompression speed. See also
+ CONFIG_CMD_LZMADEC which provides a decode command.
+
config LZO
+ bool "Enable LZO decompression support"
+ help
+ This enables support for LZO compression algorithm.r
+
+config SPL_LZO
+ bool "Enable LZO decompression support in SPL"
+ help
+ This enables support for LZO compression algorithm in the SPL.
+
+config SPL_GZIP
+ bool "Enable gzip decompression support for SPL build"
+ select SPL_ZLIB
+ help
+ This enables support for GZIP compression altorithm for SPL boot.
+
+config SPL_ZLIB
bool
+ help
+ This enables compression lib for SPL boot.
+
endmenu
config ERRNO_STR
- if errno is null or positive number - a pointer to "Success" message
- if errno is negative - a pointer to errno related message
+config HEXDUMP
+ bool "Enable hexdump"
+ help
+ This enables functions for printing dumps of binary data.
+
config OF_LIBFDT
bool "Enable the FDT library"
default y if OF_CONTROL
help
This enables the FDT library (libfdt). It provides functions for
accessing binary device tree images in memory, such as adding and
- removing notes and properties, scanning through the tree and finding
+ removing nodes and properties, scanning through the tree and finding
particular compatible nodes. The library operates on a flattened
version of the device tree.
config OF_LIBFDT_OVERLAY
bool "Enable the FDT library overlay support"
+ depends on OF_LIBFDT
+ default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
help
This enables the FDT library (libfdt) overlay support.
help
This enables the FDT library (libfdt). It provides functions for
accessing binary device tree images in memory, such as adding and
- removing notes and properties, scanning through the tree and finding
+ removing nodes and properties, scanning through the tree and finding
particular compatible nodes. The library operates on a flattened
version of the device tree.
config FDT_FIXUP_PARTITIONS
bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
depends on OF_LIBFDT
- default n
+ depends on CMD_MTDPARTS
help
Allow overwriting defined partitions in the device tree blob
using partition info defined in the 'mtdparts' environment
source lib/efi/Kconfig
source lib/efi_loader/Kconfig
+source lib/optee/Kconfig
endmenu