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