1menu "Library routines" 2 3config CC_OPTIMIZE_LIBS_FOR_SPEED 4 bool "Optimize libraries for speed" 5 help 6 Enabling this option will pass "-O2" to gcc when compiling 7 under "lib" directory. 8 9 If unsure, say N. 10 11config HAVE_PRIVATE_LIBGCC 12 bool 13 14config USE_PRIVATE_LIBGCC 15 bool "Use private libgcc" 16 depends on HAVE_PRIVATE_LIBGCC 17 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS) 18 help 19 This option allows you to use the built-in libgcc implementation 20 of U-Boot instead of the one provided by the compiler. 21 If unsure, say N. 22 23config SYS_HZ 24 int 25 default 1000 26 help 27 The frequency of the timer returned by get_timer(). 28 get_timer() must operate in milliseconds and this option must be 29 set to 1000. 30 31config USE_TINY_PRINTF 32 bool "Enable tiny printf() version" 33 help 34 This option enables a tiny, stripped down printf version. 35 This should only be used in space limited environments, 36 like SPL versions with hard memory limits. This version 37 reduces the code size by about 2.5KiB on armv7. 38 39 The supported format specifiers are %c, %s, %u/%d and %x. 40 41config REGEX 42 bool "Enable regular expression support" 43 default y if NET 44 help 45 If this variable is defined, U-Boot is linked against the 46 SLRE (Super Light Regular Expression) library, which adds 47 regex support to some commands, for example "env grep" and 48 "setexpr". 49 50config LIB_RAND 51 bool "Pseudo-random library support " 52 help 53 This library provides pseudo-random number generator functions. 54 55config SPL_TINY_MEMSET 56 bool "Use a very small memset() in SPL" 57 help 58 The faster memset() is the arch-specific one (if available) enabled 59 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get 60 better performance by writing a word at a time. But in very 61 size-constrained envrionments even this may be too big. Enable this 62 option to reduce code size slightly at the cost of some speed. 63 64config TPL_TINY_MEMSET 65 bool "Use a very small memset() in TPL" 66 help 67 The faster memset() is the arch-specific one (if available) enabled 68 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get 69 better performance by writing a word at a time. But in very 70 size-constrained envrionments even this may be too big. Enable this 71 option to reduce code size slightly at the cost of some speed. 72 73config RBTREE 74 bool 75 76source lib/dhry/Kconfig 77 78menu "Security support" 79 80config AES 81 bool "Support the AES algorithm" 82 help 83 This provides a means to encrypt and decrypt data using the AES 84 (Advanced Encryption Standard). This algorithm uses a symetric key 85 and is widely used as a streaming cipher. Different key lengths are 86 supported by the algorithm but only a 128-bit key is supported at 87 present. 88 89source lib/rsa/Kconfig 90 91config TPM 92 bool "Trusted Platform Module (TPM) Support" 93 depends on DM 94 help 95 This enables support for TPMs which can be used to provide security 96 features for your board. The TPM can be connected via LPC or I2C 97 and a sandbox TPM is provided for testing purposes. Use the 'tpm' 98 command to interactive the TPM. Driver model support is provided 99 for the low-level TPM interface, but only one TPM is supported at 100 a time by the TPM library. 101 102endmenu 103 104menu "Hashing Support" 105 106config SHA1 107 bool "Enable SHA1 support" 108 help 109 This option enables support of hashing using SHA1 algorithm. 110 The hash is calculated in software. 111 The SHA1 algorithm produces a 160-bit (20-byte) hash value 112 (digest). 113 114config SHA256 115 bool "Enable SHA256 support" 116 help 117 This option enables support of hashing using SHA256 algorithm. 118 The hash is calculated in software. 119 The SHA256 algorithm produces a 256-bit (32-byte) hash value 120 (digest). 121 122config SHA_HW_ACCEL 123 bool "Enable hashing using hardware" 124 help 125 This option enables hardware acceleration 126 for SHA1/SHA256 hashing. 127 This affects the 'hash' command and also the 128 hash_lookup_algo() function. 129 130config SHA_PROG_HW_ACCEL 131 bool "Enable Progressive hashing support using hardware" 132 depends on SHA_HW_ACCEL 133 help 134 This option enables hardware-acceleration for 135 SHA1/SHA256 progressive hashing. 136 Data can be streamed in a block at a time and the hashing 137 is performed in hardware. 138 139config MD5 140 bool 141 142endmenu 143 144menu "Compression Support" 145 146config LZ4 147 bool "Enable LZ4 decompression support" 148 help 149 If this option is set, support for LZ4 compressed images 150 is included. The LZ4 algorithm can run in-place as long as the 151 compressed image is loaded to the end of the output buffer, and 152 trades lower compression ratios for much faster decompression. 153 154 NOTE: This implements the release version of the LZ4 frame 155 format as generated by default by the 'lz4' command line tool. 156 This is not the same as the outdated, less efficient legacy 157 frame format currently (2015) implemented in the Linux kernel 158 (generated by 'lz4 -l'). The two formats are incompatible. 159 160config LZMA 161 bool "Enable LZMA decompression support" 162 help 163 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), 164 a dictionary compression algorithm that provides a high compression 165 ratio and fairly fast decompression speed. See also 166 CONFIG_CMD_LZMADEC which provides a decode command. 167 168config LZO 169 bool "Enable LZO decompression support" 170 help 171 This enables support for LZO compression algorithm.r 172endmenu 173 174config ERRNO_STR 175 bool "Enable function for getting errno-related string message" 176 help 177 The function errno_str(int errno), returns a pointer to the errno 178 corresponding text message: 179 - if errno is null or positive number - a pointer to "Success" message 180 - if errno is negative - a pointer to errno related message 181 182config OF_LIBFDT 183 bool "Enable the FDT library" 184 default y if OF_CONTROL 185 help 186 This enables the FDT library (libfdt). It provides functions for 187 accessing binary device tree images in memory, such as adding and 188 removing notes and properties, scanning through the tree and finding 189 particular compatible nodes. The library operates on a flattened 190 version of the device tree. 191 192config OF_LIBFDT_OVERLAY 193 bool "Enable the FDT library overlay support" 194 help 195 This enables the FDT library (libfdt) overlay support. 196 197config SPL_OF_LIBFDT 198 bool "Enable the FDT library for SPL" 199 default y if SPL_OF_CONTROL 200 help 201 This enables the FDT library (libfdt). It provides functions for 202 accessing binary device tree images in memory, such as adding and 203 removing notes and properties, scanning through the tree and finding 204 particular compatible nodes. The library operates on a flattened 205 version of the device tree. 206 207config FDT_FIXUP_PARTITIONS 208 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'" 209 depends on OF_LIBFDT 210 default n 211 help 212 Allow overwriting defined partitions in the device tree blob 213 using partition info defined in the 'mtdparts' environment 214 variable. 215 216menu "System tables" 217 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) 218 219config GENERATE_SMBIOS_TABLE 220 bool "Generate an SMBIOS (System Management BIOS) table" 221 default y 222 depends on X86 || EFI_LOADER 223 help 224 The System Management BIOS (SMBIOS) specification addresses how 225 motherboard and system vendors present management information about 226 their products in a standard format by extending the BIOS interface 227 on Intel architecture systems. 228 229 Check http://www.dmtf.org/standards/smbios for details. 230 231config SMBIOS_MANUFACTURER 232 string "SMBIOS Manufacturer" 233 depends on GENERATE_SMBIOS_TABLE 234 default SYS_VENDOR 235 help 236 The board manufacturer to store in SMBIOS structures. 237 Change this to override the default one (CONFIG_SYS_VENDOR). 238 239config SMBIOS_PRODUCT_NAME 240 string "SMBIOS Product Name" 241 depends on GENERATE_SMBIOS_TABLE 242 default SYS_BOARD 243 help 244 The product name to store in SMBIOS structures. 245 Change this to override the default one (CONFIG_SYS_BOARD). 246 247endmenu 248 249source lib/efi/Kconfig 250source lib/efi_loader/Kconfig 251 252endmenu 253