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