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