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 149config CRC32C 150 bool 151 152endmenu 153 154menu "Compression Support" 155 156config LZ4 157 bool "Enable LZ4 decompression support" 158 help 159 If this option is set, support for LZ4 compressed images 160 is included. The LZ4 algorithm can run in-place as long as the 161 compressed image is loaded to the end of the output buffer, and 162 trades lower compression ratios for much faster decompression. 163 164 NOTE: This implements the release version of the LZ4 frame 165 format as generated by default by the 'lz4' command line tool. 166 This is not the same as the outdated, less efficient legacy 167 frame format currently (2015) implemented in the Linux kernel 168 (generated by 'lz4 -l'). The two formats are incompatible. 169 170config LZMA 171 bool "Enable LZMA decompression support" 172 help 173 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), 174 a dictionary compression algorithm that provides a high compression 175 ratio and fairly fast decompression speed. See also 176 CONFIG_CMD_LZMADEC which provides a decode command. 177 178config LZO 179 bool "Enable LZO decompression support" 180 help 181 This enables support for LZO compression algorithm.r 182 183config SPL_GZIP 184 bool "Enable gzip decompression support for SPL build" 185 select SPL_ZLIB 186 help 187 This enables support for GZIP compression altorithm for SPL boot. 188 189config SPL_ZLIB 190 bool 191 help 192 This enables compression lib for SPL boot. 193 194endmenu 195 196config ERRNO_STR 197 bool "Enable function for getting errno-related string message" 198 help 199 The function errno_str(int errno), returns a pointer to the errno 200 corresponding text message: 201 - if errno is null or positive number - a pointer to "Success" message 202 - if errno is negative - a pointer to errno related message 203 204config OF_LIBFDT 205 bool "Enable the FDT library" 206 default y if OF_CONTROL 207 help 208 This enables the FDT library (libfdt). It provides functions for 209 accessing binary device tree images in memory, such as adding and 210 removing nodes and properties, scanning through the tree and finding 211 particular compatible nodes. The library operates on a flattened 212 version of the device tree. 213 214config OF_LIBFDT_OVERLAY 215 bool "Enable the FDT library overlay support" 216 help 217 This enables the FDT library (libfdt) overlay support. 218 219config SPL_OF_LIBFDT 220 bool "Enable the FDT library for SPL" 221 default y if SPL_OF_CONTROL 222 help 223 This enables the FDT library (libfdt). It provides functions for 224 accessing binary device tree images in memory, such as adding and 225 removing nodes and properties, scanning through the tree and finding 226 particular compatible nodes. The library operates on a flattened 227 version of the device tree. 228 229config FDT_FIXUP_PARTITIONS 230 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'" 231 depends on OF_LIBFDT 232 default n 233 help 234 Allow overwriting defined partitions in the device tree blob 235 using partition info defined in the 'mtdparts' environment 236 variable. 237 238menu "System tables" 239 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) 240 241config GENERATE_SMBIOS_TABLE 242 bool "Generate an SMBIOS (System Management BIOS) table" 243 default y 244 depends on X86 || EFI_LOADER 245 help 246 The System Management BIOS (SMBIOS) specification addresses how 247 motherboard and system vendors present management information about 248 their products in a standard format by extending the BIOS interface 249 on Intel architecture systems. 250 251 Check http://www.dmtf.org/standards/smbios for details. 252 253config SMBIOS_MANUFACTURER 254 string "SMBIOS Manufacturer" 255 depends on GENERATE_SMBIOS_TABLE 256 default SYS_VENDOR 257 help 258 The board manufacturer to store in SMBIOS structures. 259 Change this to override the default one (CONFIG_SYS_VENDOR). 260 261config SMBIOS_PRODUCT_NAME 262 string "SMBIOS Product Name" 263 depends on GENERATE_SMBIOS_TABLE 264 default SYS_BOARD 265 help 266 The product name to store in SMBIOS structures. 267 Change this to override the default one (CONFIG_SYS_BOARD). 268 269endmenu 270 271source lib/efi/Kconfig 272source lib/efi_loader/Kconfig 273 274endmenu 275