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 HAVE_PRIVATE_LIBGCC 19 bool 20 21config USE_PRIVATE_LIBGCC 22 bool "Use private libgcc" 23 depends on HAVE_PRIVATE_LIBGCC 24 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS) 25 help 26 This option allows you to use the built-in libgcc implementation 27 of U-Boot instead of the one provided by the compiler. 28 If unsure, say N. 29 30config SYS_HZ 31 int 32 default 1000 33 help 34 The frequency of the timer returned by get_timer(). 35 get_timer() must operate in milliseconds and this option must be 36 set to 1000. 37 38config USE_TINY_PRINTF 39 bool "Enable tiny printf() version" 40 help 41 This option enables a tiny, stripped down printf version. 42 This should only be used in space limited environments, 43 like SPL versions with hard memory limits. This version 44 reduces the code size by about 2.5KiB on armv7. 45 46 The supported format specifiers are %c, %s, %u/%d and %x. 47 48config REGEX 49 bool "Enable regular expression support" 50 default y if NET 51 help 52 If this variable is defined, U-Boot is linked against the 53 SLRE (Super Light Regular Expression) library, which adds 54 regex support to some commands, for example "env grep" and 55 "setexpr". 56 57config LIB_RAND 58 bool "Pseudo-random library support " 59 help 60 This library provides pseudo-random number generator functions. 61 62config SPL_TINY_MEMSET 63 bool "Use a very small memset() in SPL" 64 help 65 The faster memset() is the arch-specific one (if available) enabled 66 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get 67 better performance by writing a word at a time. But in very 68 size-constrained envrionments even this may be too big. Enable this 69 option to reduce code size slightly at the cost of some speed. 70 71config TPL_TINY_MEMSET 72 bool "Use a very small memset() in TPL" 73 help 74 The faster memset() is the arch-specific one (if available) enabled 75 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get 76 better performance by writing a word at a time. But in very 77 size-constrained envrionments even this may be too big. Enable this 78 option to reduce code size slightly at the cost of some speed. 79 80config RBTREE 81 bool 82 83config BITREVERSE 84 bool "Bit reverse library from Linux" 85 86source lib/dhry/Kconfig 87 88menu "Security support" 89 90config AES 91 bool "Support the AES algorithm" 92 help 93 This provides a means to encrypt and decrypt data using the AES 94 (Advanced Encryption Standard). This algorithm uses a symetric key 95 and is widely used as a streaming cipher. Different key lengths are 96 supported by the algorithm but only a 128-bit key is supported at 97 present. 98 99source lib/rsa/Kconfig 100 101config TPM 102 bool "Trusted Platform Module (TPM) Support" 103 depends on DM 104 help 105 This enables support for TPMs which can be used to provide security 106 features for your board. The TPM can be connected via LPC or I2C 107 and a sandbox TPM is provided for testing purposes. Use the 'tpm' 108 command to interactive the TPM. Driver model support is provided 109 for the low-level TPM interface, but only one TPM is supported at 110 a time by the TPM library. 111 112endmenu 113 114menu "Hashing Support" 115 116config SHA1 117 bool "Enable SHA1 support" 118 help 119 This option enables support of hashing using SHA1 algorithm. 120 The hash is calculated in software. 121 The SHA1 algorithm produces a 160-bit (20-byte) hash value 122 (digest). 123 124config SHA256 125 bool "Enable SHA256 support" 126 help 127 This option enables support of hashing using SHA256 algorithm. 128 The hash is calculated in software. 129 The SHA256 algorithm produces a 256-bit (32-byte) hash value 130 (digest). 131 132config SHA_HW_ACCEL 133 bool "Enable hashing using hardware" 134 help 135 This option enables hardware acceleration 136 for SHA1/SHA256 hashing. 137 This affects the 'hash' command and also the 138 hash_lookup_algo() function. 139 140config SHA_PROG_HW_ACCEL 141 bool "Enable Progressive hashing support using hardware" 142 depends on SHA_HW_ACCEL 143 help 144 This option enables hardware-acceleration for 145 SHA1/SHA256 progressive hashing. 146 Data can be streamed in a block at a time and the hashing 147 is performed in hardware. 148 149config MD5 150 bool 151 152config CRC32C 153 bool 154 155endmenu 156 157menu "Compression Support" 158 159config LZ4 160 bool "Enable LZ4 decompression support" 161 help 162 If this option is set, support for LZ4 compressed images 163 is included. The LZ4 algorithm can run in-place as long as the 164 compressed image is loaded to the end of the output buffer, and 165 trades lower compression ratios for much faster decompression. 166 167 NOTE: This implements the release version of the LZ4 frame 168 format as generated by default by the 'lz4' command line tool. 169 This is not the same as the outdated, less efficient legacy 170 frame format currently (2015) implemented in the Linux kernel 171 (generated by 'lz4 -l'). The two formats are incompatible. 172 173config LZMA 174 bool "Enable LZMA decompression support" 175 help 176 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), 177 a dictionary compression algorithm that provides a high compression 178 ratio and fairly fast decompression speed. See also 179 CONFIG_CMD_LZMADEC which provides a decode command. 180 181config LZO 182 bool "Enable LZO decompression support" 183 help 184 This enables support for LZO compression algorithm.r 185 186config SPL_LZO 187 bool "Enable LZO decompression support in SPL" 188 help 189 This enables support for LZO compression algorithm in the SPL. 190 191config SPL_GZIP 192 bool "Enable gzip decompression support for SPL build" 193 select SPL_ZLIB 194 help 195 This enables support for GZIP compression altorithm for SPL boot. 196 197config SPL_ZLIB 198 bool 199 help 200 This enables compression lib for SPL boot. 201 202endmenu 203 204config ERRNO_STR 205 bool "Enable function for getting errno-related string message" 206 help 207 The function errno_str(int errno), returns a pointer to the errno 208 corresponding text message: 209 - if errno is null or positive number - a pointer to "Success" message 210 - if errno is negative - a pointer to errno related message 211 212config OF_LIBFDT 213 bool "Enable the FDT library" 214 default y if OF_CONTROL 215 help 216 This enables the FDT library (libfdt). It provides functions for 217 accessing binary device tree images in memory, such as adding and 218 removing nodes and properties, scanning through the tree and finding 219 particular compatible nodes. The library operates on a flattened 220 version of the device tree. 221 222config OF_LIBFDT_OVERLAY 223 bool "Enable the FDT library overlay support" 224 help 225 This enables the FDT library (libfdt) overlay support. 226 227config SPL_OF_LIBFDT 228 bool "Enable the FDT library for SPL" 229 default y if SPL_OF_CONTROL 230 help 231 This enables the FDT library (libfdt). It provides functions for 232 accessing binary device tree images in memory, such as adding and 233 removing nodes and properties, scanning through the tree and finding 234 particular compatible nodes. The library operates on a flattened 235 version of the device tree. 236 237config FDT_FIXUP_PARTITIONS 238 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'" 239 depends on OF_LIBFDT 240 default n 241 help 242 Allow overwriting defined partitions in the device tree blob 243 using partition info defined in the 'mtdparts' environment 244 variable. 245 246menu "System tables" 247 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) 248 249config GENERATE_SMBIOS_TABLE 250 bool "Generate an SMBIOS (System Management BIOS) table" 251 default y 252 depends on X86 || EFI_LOADER 253 help 254 The System Management BIOS (SMBIOS) specification addresses how 255 motherboard and system vendors present management information about 256 their products in a standard format by extending the BIOS interface 257 on Intel architecture systems. 258 259 Check http://www.dmtf.org/standards/smbios for details. 260 261config SMBIOS_MANUFACTURER 262 string "SMBIOS Manufacturer" 263 depends on GENERATE_SMBIOS_TABLE 264 default SYS_VENDOR 265 help 266 The board manufacturer to store in SMBIOS structures. 267 Change this to override the default one (CONFIG_SYS_VENDOR). 268 269config SMBIOS_PRODUCT_NAME 270 string "SMBIOS Product Name" 271 depends on GENERATE_SMBIOS_TABLE 272 default SYS_BOARD 273 help 274 The product name to store in SMBIOS structures. 275 Change this to override the default one (CONFIG_SYS_BOARD). 276 277endmenu 278 279source lib/efi/Kconfig 280source lib/efi_loader/Kconfig 281 282endmenu 283