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 RBTREE 65 bool 66 67source lib/dhry/Kconfig 68 69menu "Security support" 70 71config AES 72 bool "Support the AES algorithm" 73 help 74 This provides a means to encrypt and decrypt data using the AES 75 (Advanced Encryption Standard). This algorithm uses a symetric key 76 and is widely used as a streaming cipher. Different key lengths are 77 supported by the algorithm but only a 128-bit key is supported at 78 present. 79 80source lib/rsa/Kconfig 81 82config TPM 83 bool "Trusted Platform Module (TPM) Support" 84 depends on DM 85 help 86 This enables support for TPMs which can be used to provide security 87 features for your board. The TPM can be connected via LPC or I2C 88 and a sandbox TPM is provided for testing purposes. Use the 'tpm' 89 command to interactive the TPM. Driver model support is provided 90 for the low-level TPM interface, but only one TPM is supported at 91 a time by the TPM library. 92 93endmenu 94 95menu "Hashing Support" 96 97config SHA1 98 bool "Enable SHA1 support" 99 help 100 This option enables support of hashing using SHA1 algorithm. 101 The hash is calculated in software. 102 The SHA1 algorithm produces a 160-bit (20-byte) hash value 103 (digest). 104 105config SHA256 106 bool "Enable SHA256 support" 107 help 108 This option enables support of hashing using SHA256 algorithm. 109 The hash is calculated in software. 110 The SHA256 algorithm produces a 256-bit (32-byte) hash value 111 (digest). 112 113config SHA_HW_ACCEL 114 bool "Enable hashing using hardware" 115 help 116 This option enables hardware acceleration 117 for SHA1/SHA256 hashing. 118 This affects the 'hash' command and also the 119 hash_lookup_algo() function. 120 121config SHA_PROG_HW_ACCEL 122 bool "Enable Progressive hashing support using hardware" 123 depends on SHA_HW_ACCEL 124 help 125 This option enables hardware-acceleration for 126 SHA1/SHA256 progressive hashing. 127 Data can be streamed in a block at a time and the hashing 128 is performed in hardware. 129 130config MD5 131 bool 132 133endmenu 134 135menu "Compression Support" 136 137config LZ4 138 bool "Enable LZ4 decompression support" 139 help 140 If this option is set, support for LZ4 compressed images 141 is included. The LZ4 algorithm can run in-place as long as the 142 compressed image is loaded to the end of the output buffer, and 143 trades lower compression ratios for much faster decompression. 144 145 NOTE: This implements the release version of the LZ4 frame 146 format as generated by default by the 'lz4' command line tool. 147 This is not the same as the outdated, less efficient legacy 148 frame format currently (2015) implemented in the Linux kernel 149 (generated by 'lz4 -l'). The two formats are incompatible. 150 151config LZMA 152 bool "Enable LZMA decompression support" 153 help 154 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), 155 a dictionary compression algorithm that provides a high compression 156 ratio and fairly fast decompression speed. See also 157 CONFIG_CMD_LZMADEC which provides a decode command. 158 159config LZO 160 bool 161endmenu 162 163config ERRNO_STR 164 bool "Enable function for getting errno-related string message" 165 help 166 The function errno_str(int errno), returns a pointer to the errno 167 corresponding text message: 168 - if errno is null or positive number - a pointer to "Success" message 169 - if errno is negative - a pointer to errno related message 170 171config OF_LIBFDT 172 bool "Enable the FDT library" 173 default y if OF_CONTROL 174 help 175 This enables the FDT library (libfdt). It provides functions for 176 accessing binary device tree images in memory, such as adding and 177 removing notes and properties, scanning through the tree and finding 178 particular compatible nodes. The library operates on a flattened 179 version of the device tree. 180 181config OF_LIBFDT_OVERLAY 182 bool "Enable the FDT library overlay support" 183 help 184 This enables the FDT library (libfdt) overlay support. 185 186config SPL_OF_LIBFDT 187 bool "Enable the FDT library for SPL" 188 default y if SPL_OF_CONTROL 189 help 190 This enables the FDT library (libfdt). It provides functions for 191 accessing binary device tree images in memory, such as adding and 192 removing notes and properties, scanning through the tree and finding 193 particular compatible nodes. The library operates on a flattened 194 version of the device tree. 195 196config FDT_FIXUP_PARTITIONS 197 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'" 198 depends on OF_LIBFDT 199 default n 200 help 201 Allow overwriting defined partitions in the device tree blob 202 using partition info defined in the 'mtdparts' environment 203 variable. 204 205menu "System tables" 206 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) 207 208config GENERATE_SMBIOS_TABLE 209 bool "Generate an SMBIOS (System Management BIOS) table" 210 default y 211 depends on X86 || EFI_LOADER 212 help 213 The System Management BIOS (SMBIOS) specification addresses how 214 motherboard and system vendors present management information about 215 their products in a standard format by extending the BIOS interface 216 on Intel architecture systems. 217 218 Check http://www.dmtf.org/standards/smbios for details. 219 220config SMBIOS_MANUFACTURER 221 string "SMBIOS Manufacturer" 222 depends on GENERATE_SMBIOS_TABLE 223 default SYS_VENDOR 224 help 225 The board manufacturer to store in SMBIOS structures. 226 Change this to override the default one (CONFIG_SYS_VENDOR). 227 228config SMBIOS_PRODUCT_NAME 229 string "SMBIOS Product Name" 230 depends on GENERATE_SMBIOS_TABLE 231 default SYS_BOARD 232 help 233 The product name to store in SMBIOS structures. 234 Change this to override the default one (CONFIG_SYS_BOARD). 235 236endmenu 237 238source lib/efi/Kconfig 239source lib/efi_loader/Kconfig 240 241endmenu 242