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