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      1 menu "Library routines"
      2 
      3 config BCH
      4 	bool "Enable Software based BCH ECC"
      5 	help
      6 	  Enables software based BCH ECC algorithm present in lib/bch.c
      7 	  This is used by SoC platforms which do not have built-in ELM
      8 	  hardware engine required for BCH ECC correction.
      9 
     10 config CC_OPTIMIZE_LIBS_FOR_SPEED
     11 	bool "Optimize libraries for speed"
     12 	help
     13 	  Enabling this option will pass "-O2" to gcc when compiling
     14 	  under "lib" directory.
     15 
     16 	  If unsure, say N.
     17 
     18 config DYNAMIC_CRC_TABLE
     19 	bool "Enable Dynamic tables for CRC"
     20 	help
     21 	  Enable this option to calculate entries for CRC tables at runtime.
     22 	  This can be helpful when reducing the size of the build image
     23 
     24 config HAVE_PRIVATE_LIBGCC
     25 	bool
     26 
     27 config LIB_UUID
     28 	bool
     29 
     30 config PRINTF
     31 	bool
     32 	default y
     33 
     34 config SPL_PRINTF
     35 	bool
     36 	select SPL_SPRINTF
     37 	select SPL_STRTO if !USE_TINY_PRINTF
     38 
     39 config TPL_PRINTF
     40 	bool
     41 	select TPL_SPRINTF
     42 	select TPL_STRTO if !USE_TINY_PRINTF
     43 
     44 config SPRINTF
     45 	bool
     46 	default y
     47 
     48 config SPL_SPRINTF
     49 	bool
     50 
     51 config TPL_SPRINTF
     52 	bool
     53 
     54 config STRTO
     55 	bool
     56 	default y
     57 
     58 config SPL_STRTO
     59 	bool
     60 
     61 config TPL_STRTO
     62 	bool
     63 
     64 config IMAGE_SPARSE
     65 	bool
     66 
     67 config IMAGE_SPARSE_FILLBUF_SIZE
     68 	hex "Android sparse image CHUNK_TYPE_FILL buffer size"
     69 	default 0x80000
     70 	depends on IMAGE_SPARSE
     71 	help
     72 	  Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
     73 	  chunks.
     74 
     75 config USE_PRIVATE_LIBGCC
     76 	bool "Use private libgcc"
     77 	depends on HAVE_PRIVATE_LIBGCC
     78 	default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
     79 	help
     80 	  This option allows you to use the built-in libgcc implementation
     81 	  of U-Boot instead of the one provided by the compiler.
     82 	  If unsure, say N.
     83 
     84 config SYS_HZ
     85 	int
     86 	default 1000
     87 	help
     88 	  The frequency of the timer returned by get_timer().
     89 	  get_timer() must operate in milliseconds and this option must be
     90 	  set to 1000.
     91 
     92 config USE_TINY_PRINTF
     93 	bool "Enable tiny printf() version"
     94 	help
     95 	  This option enables a tiny, stripped down printf version.
     96 	  This should only be used in space limited environments,
     97 	  like SPL versions with hard memory limits. This version
     98 	  reduces the code size by about 2.5KiB on armv7.
     99 
    100 	  The supported format specifiers are %c, %s, %u/%d and %x.
    101 
    102 config PANIC_HANG
    103 	bool "Do not reset the system on fatal error"
    104 	help
    105 	  Define this option to stop the system in case of a fatal error,
    106 	  so that you have to reset it manually. This is probably NOT a good
    107 	  idea for an embedded system where you want the system to reboot
    108 	  automatically as fast as possible, but it may be useful during
    109 	  development since you can try to debug the conditions that lead to
    110 	  the situation.
    111 
    112 config REGEX
    113 	bool "Enable regular expression support"
    114 	default y if NET
    115 	help
    116 	  If this variable is defined, U-Boot is linked against the
    117 	  SLRE (Super Light Regular Expression) library, which adds
    118 	  regex support to some commands, for example "env grep" and
    119 	  "setexpr".
    120 
    121 choice
    122 	prompt "Pseudo-random library support type"
    123 	depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
    124 	default LIB_RAND
    125 	help
    126 	  Select the library to provide pseudo-random number generator
    127 	  functions.  LIB_HW_RAND supports certain hardware engines that
    128 	  provide this functionality.  If in doubt, select LIB_RAND.
    129 
    130 config LIB_RAND
    131 	bool "Pseudo-random library support"
    132 
    133 config LIB_HW_RAND
    134 	bool "HW Engine for random libray support"
    135 
    136 endchoice
    137 
    138 config SPL_TINY_MEMSET
    139 	bool "Use a very small memset() in SPL"
    140 	help
    141 	  The faster memset() is the arch-specific one (if available) enabled
    142 	  by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
    143 	  better performance by writing a word at a time. But in very
    144 	  size-constrained envrionments even this may be too big. Enable this
    145 	  option to reduce code size slightly at the cost of some speed.
    146 
    147 config TPL_TINY_MEMSET
    148 	bool "Use a very small memset() in TPL"
    149 	help
    150 	  The faster memset() is the arch-specific one (if available) enabled
    151 	  by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
    152 	  better performance by writing a word at a time. But in very
    153 	  size-constrained envrionments even this may be too big. Enable this
    154 	  option to reduce code size slightly at the cost of some speed.
    155 
    156 config RBTREE
    157 	bool
    158 
    159 config BITREVERSE
    160 	bool "Bit reverse library from Linux"
    161 
    162 source lib/dhry/Kconfig
    163 
    164 menu "Security support"
    165 
    166 config AES
    167 	bool "Support the AES algorithm"
    168 	help
    169 	  This provides a means to encrypt and decrypt data using the AES
    170 	  (Advanced Encryption Standard). This algorithm uses a symetric key
    171 	  and is widely used as a streaming cipher. Different key lengths are
    172 	  supported by the algorithm but only a 128-bit key is supported at
    173 	  present.
    174 
    175 source lib/rsa/Kconfig
    176 
    177 config TPM
    178 	bool "Trusted Platform Module (TPM) Support"
    179 	depends on DM
    180 	help
    181 	  This enables support for TPMs which can be used to provide security
    182 	  features for your board. The TPM can be connected via LPC or I2C
    183 	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
    184 	  command to interactive the TPM. Driver model support is provided
    185 	  for the low-level TPM interface, but only one TPM is supported at
    186 	  a time by the TPM library.
    187 
    188 endmenu
    189 
    190 menu "Android Verified Boot"
    191 
    192 config LIBAVB
    193 	bool "Android Verified Boot 2.0 support"
    194 	depends on ANDROID_BOOT_IMAGE
    195 	default n
    196 	help
    197 	  This enables support of Android Verified Boot 2.0 which can be used
    198 	  to assure the end user of the integrity of the software running on a
    199 	  device. Introduces such features as boot chain of trust, rollback
    200 	  protection etc.
    201 
    202 endmenu
    203 
    204 menu "Hashing Support"
    205 
    206 config SHA1
    207 	bool "Enable SHA1 support"
    208 	help
    209 	  This option enables support of hashing using SHA1 algorithm.
    210 	  The hash is calculated in software.
    211 	  The SHA1 algorithm produces a 160-bit (20-byte) hash value
    212 	  (digest).
    213 
    214 config SHA256
    215 	bool "Enable SHA256 support"
    216 	help
    217 	  This option enables support of hashing using SHA256 algorithm.
    218 	  The hash is calculated in software.
    219 	  The SHA256 algorithm produces a 256-bit (32-byte) hash value
    220 	  (digest).
    221 
    222 config SHA_HW_ACCEL
    223 	bool "Enable hashing using hardware"
    224 	help
    225 	  This option enables hardware acceleration
    226 	  for SHA1/SHA256 hashing.
    227 	  This affects the 'hash' command and also the
    228 	  hash_lookup_algo() function.
    229 
    230 config SHA_PROG_HW_ACCEL
    231 	bool "Enable Progressive hashing support using hardware"
    232 	depends on SHA_HW_ACCEL
    233 	help
    234 	  This option enables hardware-acceleration for
    235 	  SHA1/SHA256 progressive hashing.
    236 	  Data can be streamed in a block at a time and the hashing
    237 	  is performed in hardware.
    238 
    239 config MD5
    240 	bool
    241 
    242 config CRC32C
    243 	bool
    244 
    245 endmenu
    246 
    247 menu "Compression Support"
    248 
    249 config LZ4
    250 	bool "Enable LZ4 decompression support"
    251 	help
    252 	  If this option is set, support for LZ4 compressed images
    253 	  is included. The LZ4 algorithm can run in-place as long as the
    254 	  compressed image is loaded to the end of the output buffer, and
    255 	  trades lower compression ratios for much faster decompression.
    256 	  
    257 	  NOTE: This implements the release version of the LZ4 frame
    258 	  format as generated by default by the 'lz4' command line tool.
    259 	  This is not the same as the outdated, less efficient legacy
    260 	  frame format currently (2015) implemented in the Linux kernel
    261 	  (generated by 'lz4 -l'). The two formats are incompatible.
    262 
    263 config LZMA
    264 	bool "Enable LZMA decompression support"
    265 	help
    266 	  This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
    267 	  a dictionary compression algorithm that provides a high compression
    268 	  ratio and fairly fast decompression speed. See also
    269 	  CONFIG_CMD_LZMADEC which provides a decode command.
    270 
    271 config LZO
    272 	bool "Enable LZO decompression support"
    273 	help
    274 	  This enables support for LZO compression algorithm.r
    275 
    276 config SPL_LZO
    277 	bool "Enable LZO decompression support in SPL"
    278 	help
    279 	  This enables support for LZO compression algorithm in the SPL.
    280 
    281 config SPL_GZIP
    282 	bool "Enable gzip decompression support for SPL build"
    283 	select SPL_ZLIB
    284 	help
    285 	  This enables support for GZIP compression altorithm for SPL boot.
    286 
    287 config SPL_ZLIB
    288 	bool
    289 	help
    290 	  This enables compression lib for SPL boot.
    291 
    292 endmenu
    293 
    294 config ERRNO_STR
    295 	bool "Enable function for getting errno-related string message"
    296 	help
    297 	  The function errno_str(int errno), returns a pointer to the errno
    298 	  corresponding text message:
    299 	  - if errno is null or positive number - a pointer to "Success" message
    300 	  - if errno is negative - a pointer to errno related message
    301 
    302 config HEXDUMP
    303 	bool "Enable hexdump"
    304 	help
    305 	  This enables functions for printing dumps of binary data.
    306 
    307 config OF_LIBFDT
    308 	bool "Enable the FDT library"
    309 	default y if OF_CONTROL
    310 	help
    311 	  This enables the FDT library (libfdt). It provides functions for
    312 	  accessing binary device tree images in memory, such as adding and
    313 	  removing nodes and properties, scanning through the tree and finding
    314 	  particular compatible nodes. The library operates on a flattened
    315 	  version of the device tree.
    316 
    317 config OF_LIBFDT_OVERLAY
    318 	bool "Enable the FDT library overlay support"
    319 	depends on OF_LIBFDT
    320 	default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
    321 	help
    322 	  This enables the FDT library (libfdt) overlay support.
    323 
    324 config SPL_OF_LIBFDT
    325 	bool "Enable the FDT library for SPL"
    326 	default y if SPL_OF_CONTROL
    327 	help
    328 	  This enables the FDT library (libfdt). It provides functions for
    329 	  accessing binary device tree images in memory, such as adding and
    330 	  removing nodes and properties, scanning through the tree and finding
    331 	  particular compatible nodes. The library operates on a flattened
    332 	  version of the device tree.
    333 
    334 config FDT_FIXUP_PARTITIONS
    335 	bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
    336 	depends on OF_LIBFDT
    337 	default n
    338 	help
    339 	  Allow overwriting defined partitions in the device tree blob
    340 	  using partition info defined in the 'mtdparts' environment
    341 	  variable.
    342 
    343 menu "System tables"
    344 	depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
    345 
    346 config GENERATE_SMBIOS_TABLE
    347 	bool "Generate an SMBIOS (System Management BIOS) table"
    348 	default y
    349 	depends on X86 || EFI_LOADER
    350 	help
    351 	  The System Management BIOS (SMBIOS) specification addresses how
    352 	  motherboard and system vendors present management information about
    353 	  their products in a standard format by extending the BIOS interface
    354 	  on Intel architecture systems.
    355 
    356 	  Check http://www.dmtf.org/standards/smbios for details.
    357 
    358 config SMBIOS_MANUFACTURER
    359 	string "SMBIOS Manufacturer"
    360 	depends on GENERATE_SMBIOS_TABLE
    361 	default SYS_VENDOR
    362 	help
    363 	  The board manufacturer to store in SMBIOS structures.
    364 	  Change this to override the default one (CONFIG_SYS_VENDOR).
    365 
    366 config SMBIOS_PRODUCT_NAME
    367 	string "SMBIOS Product Name"
    368 	depends on GENERATE_SMBIOS_TABLE
    369 	default SYS_BOARD
    370 	help
    371 	  The product name to store in SMBIOS structures.
    372 	  Change this to override the default one (CONFIG_SYS_BOARD).
    373 
    374 endmenu
    375 
    376 source lib/efi/Kconfig
    377 source lib/efi_loader/Kconfig
    378 source lib/optee/Kconfig
    379 
    380 endmenu
    381