lib/Kconfig

   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_ARCH_IOMAP
  25         bool
  26         help
  27           Enable this option if architecture provides io{read,write}{8,16,32}
  28           I/O accessor functions.
  29
  30 config HAVE_PRIVATE_LIBGCC
  31         bool
  32
  33 config LIB_UUID
  34         bool
  35
  36 config PRINTF
  37         bool
  38         default y
  39
  40 config SPL_PRINTF
  41         bool
  42         select SPL_SPRINTF
  43         select SPL_STRTO if !USE_TINY_PRINTF
  44
  45 config TPL_PRINTF
  46         bool
  47         select TPL_SPRINTF
  48         select TPL_STRTO if !USE_TINY_PRINTF
  49
  50 config SPRINTF
  51         bool
  52         default y
  53
  54 config SPL_SPRINTF
  55         bool
  56
  57 config TPL_SPRINTF
  58         bool
  59
  60 config STRTO
  61         bool
  62         default y
  63
  64 config SPL_STRTO
  65         bool
  66
  67 config TPL_STRTO
  68         bool
  69
  70 config IMAGE_SPARSE
  71         bool
  72
  73 config IMAGE_SPARSE_FILLBUF_SIZE
  74         hex "Android sparse image CHUNK_TYPE_FILL buffer size"
  75         default 0x80000
  76         depends on IMAGE_SPARSE
  77         help
  78           Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
  79           chunks.
  80
  81 config USE_PRIVATE_LIBGCC
  82         bool "Use private libgcc"
  83         depends on HAVE_PRIVATE_LIBGCC
  84         default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
  85         help
  86           This option allows you to use the built-in libgcc implementation
  87           of U-Boot instead of the one provided by the compiler.
  88           If unsure, say N.
  89
  90 config SYS_HZ
  91         int
  92         default 1000
  93         help
  94           The frequency of the timer returned by get_timer().
  95           get_timer() must operate in milliseconds and this option must be
  96           set to 1000.
  97
  98 config USE_TINY_PRINTF
  99         bool "Enable tiny printf() version"
 100         help
 101           This option enables a tiny, stripped down printf version.
 102           This should only be used in space limited environments,
 103           like SPL versions with hard memory limits. This version
 104           reduces the code size by about 2.5KiB on armv7.
 105
 106           The supported format specifiers are %c, %s, %u/%d and %x.
 107
 108 config PANIC_HANG
 109         bool "Do not reset the system on fatal error"
 110         help
 111           Define this option to stop the system in case of a fatal error,
 112           so that you have to reset it manually. This is probably NOT a good
 113           idea for an embedded system where you want the system to reboot
 114           automatically as fast as possible, but it may be useful during
 115           development since you can try to debug the conditions that lead to
 116           the situation.
 117
 118 config REGEX
 119         bool "Enable regular expression support"
 120         default y if NET
 121         help
 122           If this variable is defined, U-Boot is linked against the
 123           SLRE (Super Light Regular Expression) library, which adds
 124           regex support to some commands, for example "env grep" and
 125           "setexpr".
 126
 127 choice
 128         prompt "Pseudo-random library support type"
 129         depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
 130         default LIB_RAND
 131         help
 132           Select the library to provide pseudo-random number generator
 133           functions.  LIB_HW_RAND supports certain hardware engines that
 134           provide this functionality.  If in doubt, select LIB_RAND.
 135
 136 config LIB_RAND
 137         bool "Pseudo-random library support"
 138
 139 config LIB_HW_RAND
 140         bool "HW Engine for random libray support"
 141
 142 endchoice
 143
 144 config SPL_TINY_MEMSET
 145         bool "Use a very small memset() in SPL"
 146         help
 147           The faster memset() is the arch-specific one (if available) enabled
 148           by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
 149           better performance by writing a word at a time. But in very
 150           size-constrained environments even this may be too big. Enable this
 151           option to reduce code size slightly at the cost of some speed.
 152
 153 config TPL_TINY_MEMSET
 154         bool "Use a very small memset() in TPL"
 155         help
 156           The faster memset() is the arch-specific one (if available) enabled
 157           by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
 158           better performance by writing a word at a time. But in very
 159           size-constrained environments even this may be too big. Enable this
 160           option to reduce code size slightly at the cost of some speed.
 161
 162 config RBTREE
 163         bool
 164
 165 config BITREVERSE
 166         bool "Bit reverse library from Linux"
 167
 168 source lib/dhry/Kconfig
 169
 170 menu "Security support"
 171
 172 config AES
 173         bool "Support the AES algorithm"
 174         help
 175           This provides a means to encrypt and decrypt data using the AES
 176           (Advanced Encryption Standard). This algorithm uses a symetric key
 177           and is widely used as a streaming cipher. Different key lengths are
 178           supported by the algorithm but only a 128-bit key is supported at
 179           present.
 180
 181 source lib/rsa/Kconfig
 182
 183 config TPM
 184         bool "Trusted Platform Module (TPM) Support"
 185         depends on DM
 186         help
 187           This enables support for TPMs which can be used to provide security
 188           features for your board. The TPM can be connected via LPC or I2C
 189           and a sandbox TPM is provided for testing purposes. Use the 'tpm'
 190           command to interactive the TPM. Driver model support is provided
 191           for the low-level TPM interface, but only one TPM is supported at
 192           a time by the TPM library.
 193
 194 config SPL_TPM
 195         bool "Trusted Platform Module (TPM) Support in SPL"
 196         depends on SPL_DM
 197         help
 198           This enables support for TPMs which can be used to provide security
 199           features for your board. The TPM can be connected via LPC or I2C
 200           and a sandbox TPM is provided for testing purposes. Use the 'tpm'
 201           command to interactive the TPM. Driver model support is provided
 202           for the low-level TPM interface, but only one TPM is supported at
 203           a time by the TPM library.
 204
 205 config TPL_TPM
 206         bool "Trusted Platform Module (TPM) Support in TPL"
 207         depends on TPL_DM
 208         help
 209           This enables support for TPMs which can be used to provide security
 210           features for your board. The TPM can be connected via LPC or I2C
 211           and a sandbox TPM is provided for testing purposes. Use the 'tpm'
 212           command to interactive the TPM. Driver model support is provided
 213           for the low-level TPM interface, but only one TPM is supported at
 214           a time by the TPM library.
 215
 216 endmenu
 217
 218 menu "Android Verified Boot"
 219
 220 config LIBAVB
 221         bool "Android Verified Boot 2.0 support"
 222         depends on ANDROID_BOOT_IMAGE
 223         default n
 224         help
 225           This enables support of Android Verified Boot 2.0 which can be used
 226           to assure the end user of the integrity of the software running on a
 227           device. Introduces such features as boot chain of trust, rollback
 228           protection etc.
 229
 230 endmenu
 231
 232 menu "Hashing Support"
 233
 234 config SHA1
 235         bool "Enable SHA1 support"
 236         help
 237           This option enables support of hashing using SHA1 algorithm.
 238           The hash is calculated in software.
 239           The SHA1 algorithm produces a 160-bit (20-byte) hash value
 240           (digest).
 241
 242 config SHA256
 243         bool "Enable SHA256 support"
 244         help
 245           This option enables support of hashing using SHA256 algorithm.
 246           The hash is calculated in software.
 247           The SHA256 algorithm produces a 256-bit (32-byte) hash value
 248           (digest).
 249
 250 config SHA_HW_ACCEL
 251         bool "Enable hashing using hardware"
 252         help
 253           This option enables hardware acceleration
 254           for SHA1/SHA256 hashing.
 255           This affects the 'hash' command and also the
 256           hash_lookup_algo() function.
 257
 258 config SHA_PROG_HW_ACCEL
 259         bool "Enable Progressive hashing support using hardware"
 260         depends on SHA_HW_ACCEL
 261         help
 262           This option enables hardware-acceleration for
 263           SHA1/SHA256 progressive hashing.
 264           Data can be streamed in a block at a time and the hashing
 265           is performed in hardware.
 266
 267 config MD5
 268         bool
 269
 270 config CRC32C
 271         bool
 272
 273 endmenu
 274
 275 menu "Compression Support"
 276
 277 config LZ4
 278         bool "Enable LZ4 decompression support"
 279         help
 280           If this option is set, support for LZ4 compressed images
 281           is included. The LZ4 algorithm can run in-place as long as the
 282           compressed image is loaded to the end of the output buffer, and
 283           trades lower compression ratios for much faster decompression.
 284
 285           NOTE: This implements the release version of the LZ4 frame
 286           format as generated by default by the 'lz4' command line tool.
 287           This is not the same as the outdated, less efficient legacy
 288           frame format currently (2015) implemented in the Linux kernel
 289           (generated by 'lz4 -l'). The two formats are incompatible.
 290
 291 config LZMA
 292         bool "Enable LZMA decompression support"
 293         help
 294           This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
 295           a dictionary compression algorithm that provides a high compression
 296           ratio and fairly fast decompression speed. See also
 297           CONFIG_CMD_LZMADEC which provides a decode command.
 298
 299 config LZO
 300         bool "Enable LZO decompression support"
 301         help
 302           This enables support for LZO compression algorithm.r
 303
 304 config SPL_LZ4
 305         bool "Enable LZ4 decompression support in SPL"
 306         help
 307           This enables support for tge LZ4 decompression algorithm in SPL. LZ4
 308           is a lossless data compression algorithm that is focused on
 309           fast compression and decompression speed. It belongs to the LZ77
 310           family of byte-oriented compression schemes.
 311
 312 config SPL_LZO
 313         bool "Enable LZO decompression support in SPL"
 314         help
 315           This enables support for LZO compression algorithm in the SPL.
 316
 317 config SPL_GZIP
 318         bool "Enable gzip decompression support for SPL build"
 319         select SPL_ZLIB
 320         help
 321           This enables support for GZIP compression altorithm for SPL boot.
 322
 323 config SPL_ZLIB
 324         bool
 325         help
 326           This enables compression lib for SPL boot.
 327
 328 endmenu
 329
 330 config ERRNO_STR
 331         bool "Enable function for getting errno-related string message"
 332         help
 333           The function errno_str(int errno), returns a pointer to the errno
 334           corresponding text message:
 335           - if errno is null or positive number - a pointer to "Success" message
 336           - if errno is negative - a pointer to errno related message
 337
 338 config HEXDUMP
 339         bool "Enable hexdump"
 340         help
 341           This enables functions for printing dumps of binary data.
 342
 343 config OF_LIBFDT
 344         bool "Enable the FDT library"
 345         default y if OF_CONTROL
 346         help
 347           This enables the FDT library (libfdt). It provides functions for
 348           accessing binary device tree images in memory, such as adding and
 349           removing nodes and properties, scanning through the tree and finding
 350           particular compatible nodes. The library operates on a flattened
 351           version of the device tree.
 352
 353 config OF_LIBFDT_OVERLAY
 354         bool "Enable the FDT library overlay support"
 355         depends on OF_LIBFDT
 356         default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
 357         help
 358           This enables the FDT library (libfdt) overlay support.
 359
 360 config SPL_OF_LIBFDT
 361         bool "Enable the FDT library for SPL"
 362         default y if SPL_OF_CONTROL
 363         help
 364           This enables the FDT library (libfdt). It provides functions for
 365           accessing binary device tree images in memory, such as adding and
 366           removing nodes and properties, scanning through the tree and finding
 367           particular compatible nodes. The library operates on a flattened
 368           version of the device tree.
 369
 370 config TPL_OF_LIBFDT
 371         bool "Enable the FDT library for TPL"
 372         default y if TPL_OF_CONTROL
 373         help
 374           This enables the FDT library (libfdt). It provides functions for
 375           accessing binary device tree images in memory, such as adding and
 376           removing nodes and properties, scanning through the tree and finding
 377           particular compatible nodes. The library operates on a flattened
 378           version of the device tree.
 379
 380 config FDT_FIXUP_PARTITIONS
 381         bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
 382         depends on OF_LIBFDT
 383         depends on CMD_MTDPARTS
 384         help
 385           Allow overwriting defined partitions in the device tree blob
 386           using partition info defined in the 'mtdparts' environment
 387           variable.
 388
 389 menu "System tables"
 390         depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
 391
 392 config GENERATE_SMBIOS_TABLE
 393         bool "Generate an SMBIOS (System Management BIOS) table"
 394         default y
 395         depends on X86 || EFI_LOADER
 396         help
 397           The System Management BIOS (SMBIOS) specification addresses how
 398           motherboard and system vendors present management information about
 399           their products in a standard format by extending the BIOS interface
 400           on Intel architecture systems.
 401
 402           Check http://www.dmtf.org/standards/smbios for details.
 403
 404 config SMBIOS_MANUFACTURER
 405         string "SMBIOS Manufacturer"
 406         depends on GENERATE_SMBIOS_TABLE
 407         default SYS_VENDOR
 408         help
 409           The board manufacturer to store in SMBIOS structures.
 410           Change this to override the default one (CONFIG_SYS_VENDOR).
 411
 412 config SMBIOS_PRODUCT_NAME
 413         string "SMBIOS Product Name"
 414         depends on GENERATE_SMBIOS_TABLE
 415         default SYS_BOARD
 416         help
 417           The product name to store in SMBIOS structures.
 418           Change this to override the default one (CONFIG_SYS_BOARD).
 419
 420 endmenu
 421
 422 source lib/efi/Kconfig
 423 source lib/efi_loader/Kconfig
 424 source lib/optee/Kconfig
 425
 426 endmenu