1menu "Library routines" 2 3config 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 10config 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 18config 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 24config HAVE_PRIVATE_LIBGCC 25 bool 26 27config LIB_UUID 28 bool 29 30config PRINTF 31 bool 32 default y 33 34config SPL_PRINTF 35 bool 36 select SPL_SPRINTF 37 select SPL_STRTO if !USE_TINY_PRINTF 38 39config TPL_PRINTF 40 bool 41 select TPL_SPRINTF 42 select TPL_STRTO if !USE_TINY_PRINTF 43 44config SPRINTF 45 bool 46 default y 47 48config SPL_SPRINTF 49 bool 50 51config TPL_SPRINTF 52 bool 53 54config STRTO 55 bool 56 default y 57 58config SPL_STRTO 59 bool 60 61config TPL_STRTO 62 bool 63 64config IMAGE_SPARSE 65 bool 66 67config 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 75config 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 84config 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 92config 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 102config 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 112config 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 121choice 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 130config LIB_RAND 131 bool "Pseudo-random library support" 132 133config LIB_HW_RAND 134 bool "HW Engine for random libray support" 135 136endchoice 137 138config 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 147config 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 156config RBTREE 157 bool 158 159config BITREVERSE 160 bool "Bit reverse library from Linux" 161 162source lib/dhry/Kconfig 163 164menu "Security support" 165 166config 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 175source lib/rsa/Kconfig 176 177config 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 188endmenu 189 190menu "Hashing Support" 191 192config SHA1 193 bool "Enable SHA1 support" 194 help 195 This option enables support of hashing using SHA1 algorithm. 196 The hash is calculated in software. 197 The SHA1 algorithm produces a 160-bit (20-byte) hash value 198 (digest). 199 200config SHA256 201 bool "Enable SHA256 support" 202 help 203 This option enables support of hashing using SHA256 algorithm. 204 The hash is calculated in software. 205 The SHA256 algorithm produces a 256-bit (32-byte) hash value 206 (digest). 207 208config SHA_HW_ACCEL 209 bool "Enable hashing using hardware" 210 help 211 This option enables hardware acceleration 212 for SHA1/SHA256 hashing. 213 This affects the 'hash' command and also the 214 hash_lookup_algo() function. 215 216config SHA_PROG_HW_ACCEL 217 bool "Enable Progressive hashing support using hardware" 218 depends on SHA_HW_ACCEL 219 help 220 This option enables hardware-acceleration for 221 SHA1/SHA256 progressive hashing. 222 Data can be streamed in a block at a time and the hashing 223 is performed in hardware. 224 225config MD5 226 bool 227 228config CRC32C 229 bool 230 231endmenu 232 233menu "Compression Support" 234 235config LZ4 236 bool "Enable LZ4 decompression support" 237 help 238 If this option is set, support for LZ4 compressed images 239 is included. The LZ4 algorithm can run in-place as long as the 240 compressed image is loaded to the end of the output buffer, and 241 trades lower compression ratios for much faster decompression. 242 243 NOTE: This implements the release version of the LZ4 frame 244 format as generated by default by the 'lz4' command line tool. 245 This is not the same as the outdated, less efficient legacy 246 frame format currently (2015) implemented in the Linux kernel 247 (generated by 'lz4 -l'). The two formats are incompatible. 248 249config LZMA 250 bool "Enable LZMA decompression support" 251 help 252 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), 253 a dictionary compression algorithm that provides a high compression 254 ratio and fairly fast decompression speed. See also 255 CONFIG_CMD_LZMADEC which provides a decode command. 256 257config LZO 258 bool "Enable LZO decompression support" 259 help 260 This enables support for LZO compression algorithm.r 261 262config SPL_LZO 263 bool "Enable LZO decompression support in SPL" 264 help 265 This enables support for LZO compression algorithm in the SPL. 266 267config SPL_GZIP 268 bool "Enable gzip decompression support for SPL build" 269 select SPL_ZLIB 270 help 271 This enables support for GZIP compression altorithm for SPL boot. 272 273config SPL_ZLIB 274 bool 275 help 276 This enables compression lib for SPL boot. 277 278endmenu 279 280config ERRNO_STR 281 bool "Enable function for getting errno-related string message" 282 help 283 The function errno_str(int errno), returns a pointer to the errno 284 corresponding text message: 285 - if errno is null or positive number - a pointer to "Success" message 286 - if errno is negative - a pointer to errno related message 287 288config OF_LIBFDT 289 bool "Enable the FDT library" 290 default y if OF_CONTROL 291 help 292 This enables the FDT library (libfdt). It provides functions for 293 accessing binary device tree images in memory, such as adding and 294 removing nodes and properties, scanning through the tree and finding 295 particular compatible nodes. The library operates on a flattened 296 version of the device tree. 297 298config OF_LIBFDT_OVERLAY 299 bool "Enable the FDT library overlay support" 300 depends on OF_LIBFDT 301 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE 302 help 303 This enables the FDT library (libfdt) overlay support. 304 305config SPL_OF_LIBFDT 306 bool "Enable the FDT library for SPL" 307 default y if SPL_OF_CONTROL 308 help 309 This enables the FDT library (libfdt). It provides functions for 310 accessing binary device tree images in memory, such as adding and 311 removing nodes and properties, scanning through the tree and finding 312 particular compatible nodes. The library operates on a flattened 313 version of the device tree. 314 315config FDT_FIXUP_PARTITIONS 316 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'" 317 depends on OF_LIBFDT 318 default n 319 help 320 Allow overwriting defined partitions in the device tree blob 321 using partition info defined in the 'mtdparts' environment 322 variable. 323 324menu "System tables" 325 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) 326 327config GENERATE_SMBIOS_TABLE 328 bool "Generate an SMBIOS (System Management BIOS) table" 329 default y 330 depends on X86 || EFI_LOADER 331 help 332 The System Management BIOS (SMBIOS) specification addresses how 333 motherboard and system vendors present management information about 334 their products in a standard format by extending the BIOS interface 335 on Intel architecture systems. 336 337 Check http://www.dmtf.org/standards/smbios for details. 338 339config SMBIOS_MANUFACTURER 340 string "SMBIOS Manufacturer" 341 depends on GENERATE_SMBIOS_TABLE 342 default SYS_VENDOR 343 help 344 The board manufacturer to store in SMBIOS structures. 345 Change this to override the default one (CONFIG_SYS_VENDOR). 346 347config SMBIOS_PRODUCT_NAME 348 string "SMBIOS Product Name" 349 depends on GENERATE_SMBIOS_TABLE 350 default SYS_BOARD 351 help 352 The product name to store in SMBIOS structures. 353 Change this to override the default one (CONFIG_SYS_BOARD). 354 355endmenu 356 357source lib/efi/Kconfig 358source lib/efi_loader/Kconfig 359source lib/optee/Kconfig 360 361endmenu 362