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