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 SYS_STACK_SIZE 39 hex 40 default 0x20000 41 help 42 The system stack size. 43 44config USE_TINY_PRINTF 45 bool "Enable tiny printf() version" 46 help 47 This option enables a tiny, stripped down printf version. 48 This should only be used in space limited environments, 49 like SPL versions with hard memory limits. This version 50 reduces the code size by about 2.5KiB on armv7. 51 52 The supported format specifiers are %c, %s, %u/%d and %x. 53 54config PANIC_HANG 55 bool "Do not reset the system on fatal error" 56 help 57 Define this option to stop the system in case of a fatal error, 58 so that you have to reset it manually. This is probably NOT a good 59 idea for an embedded system where you want the system to reboot 60 automatically as fast as possible, but it may be useful during 61 development since you can try to debug the conditions that lead to 62 the situation. 63 64config REGEX 65 bool "Enable regular expression support" 66 default y if NET 67 help 68 If this variable is defined, U-Boot is linked against the 69 SLRE (Super Light Regular Expression) library, which adds 70 regex support to some commands, for example "env grep" and 71 "setexpr". 72 73config LIB_RAND 74 bool "Pseudo-random library support " 75 help 76 This library provides pseudo-random number generator functions. 77 78config SPL_TINY_MEMSET 79 bool "Use a very small memset() in SPL" 80 help 81 The faster memset() is the arch-specific one (if available) enabled 82 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get 83 better performance by writing a word at a time. But in very 84 size-constrained envrionments even this may be too big. Enable this 85 option to reduce code size slightly at the cost of some speed. 86 87config TPL_TINY_MEMSET 88 bool "Use a very small memset() in TPL" 89 help 90 The faster memset() is the arch-specific one (if available) enabled 91 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get 92 better performance by writing a word at a time. But in very 93 size-constrained envrionments even this may be too big. Enable this 94 option to reduce code size slightly at the cost of some speed. 95 96config RBTREE 97 bool 98 99config BITREVERSE 100 bool 101 102config SYSMEM 103 bool "System memory management" 104 default y 105 help 106 This enables support for system permanent memory management. 107 108source lib/dhry/Kconfig 109 110menu "Security support" 111 112config AES 113 bool "Support the AES algorithm" 114 help 115 This provides a means to encrypt and decrypt data using the AES 116 (Advanced Encryption Standard). This algorithm uses a symetric key 117 and is widely used as a streaming cipher. Different key lengths are 118 supported by the algorithm but only a 128-bit key is supported at 119 present. 120 121source lib/rsa/Kconfig 122 123config TPM 124 bool "Trusted Platform Module (TPM) Support" 125 depends on DM 126 help 127 This enables support for TPMs which can be used to provide security 128 features for your board. The TPM can be connected via LPC or I2C 129 and a sandbox TPM is provided for testing purposes. Use the 'tpm' 130 command to interactive the TPM. Driver model support is provided 131 for the low-level TPM interface, but only one TPM is supported at 132 a time by the TPM library. 133 134endmenu 135 136menu "Hashing Support" 137 138config SHA1 139 bool "Enable SHA1 support" 140 help 141 This option enables support of hashing using SHA1 algorithm. 142 The hash is calculated in software. 143 The SHA1 algorithm produces a 160-bit (20-byte) hash value 144 (digest). 145 146config SHA256 147 bool "Enable SHA256 support" 148 help 149 This option enables support of hashing using SHA256 algorithm. 150 The hash is calculated in software. 151 The SHA256 algorithm produces a 256-bit (32-byte) hash value 152 (digest). 153 154config SHA_HW_ACCEL 155 bool "Enable hashing using hardware" 156 help 157 This option enables hardware acceleration 158 for SHA1/SHA256 hashing. 159 This affects the 'hash' command and also the 160 hash_lookup_algo() function. 161 162config SHA_PROG_HW_ACCEL 163 bool "Enable Progressive hashing support using hardware" 164 depends on SHA_HW_ACCEL 165 help 166 This option enables hardware-acceleration for 167 SHA1/SHA256 progressive hashing. 168 Data can be streamed in a block at a time and the hashing 169 is performed in hardware. 170 171config MD5 172 bool 173 174config CRC32C 175 bool 176 177endmenu 178 179menu "Compression Support" 180 181config LZ4 182 bool "Enable LZ4 decompression support" 183 help 184 If this option is set, support for LZ4 compressed images 185 is included. The LZ4 algorithm can run in-place as long as the 186 compressed image is loaded to the end of the output buffer, and 187 trades lower compression ratios for much faster decompression. 188 189 NOTE: This implements the release version of the LZ4 frame 190 format as generated by default by the 'lz4' command line tool. 191 This is not the same as the outdated, less efficient legacy 192 frame format currently (2015) implemented in the Linux kernel 193 (generated by 'lz4 -l'). The two formats are incompatible. 194 195config LZMA 196 bool "Enable LZMA decompression support" 197 help 198 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm), 199 a dictionary compression algorithm that provides a high compression 200 ratio and fairly fast decompression speed. See also 201 CONFIG_CMD_LZMADEC which provides a decode command. 202 203config LZO 204 bool "Enable LZO decompression support" 205 help 206 This enables support for LZO compression algorithm.r 207 208config SPL_LZO 209 bool "Enable LZO decompression support in SPL" 210 help 211 This enables support for LZO compression algorithm in the SPL. 212 213config SPL_GZIP 214 bool "Enable gzip decompression support for SPL build" 215 select SPL_ZLIB 216 help 217 This enables support for GZIP compression altorithm for SPL boot. 218 219config SPL_ZLIB 220 bool 221 help 222 This enables compression lib for SPL boot. 223 224endmenu 225 226config ERRNO_STR 227 bool "Enable function for getting errno-related string message" 228 help 229 The function errno_str(int errno), returns a pointer to the errno 230 corresponding text message: 231 - if errno is null or positive number - a pointer to "Success" message 232 - if errno is negative - a pointer to errno related message 233 234config OF_LIBFDT 235 bool "Enable the FDT library" 236 default y if OF_CONTROL 237 help 238 This enables the FDT library (libfdt). It provides functions for 239 accessing binary device tree images in memory, such as adding and 240 removing nodes and properties, scanning through the tree and finding 241 particular compatible nodes. The library operates on a flattened 242 version of the device tree. 243 244config OF_LIBFDT_OVERLAY 245 bool "Enable the FDT library overlay support" 246 help 247 This enables the FDT library (libfdt) overlay support. 248 249config SPL_OF_LIBFDT 250 bool "Enable the FDT library for SPL" 251 default y if SPL_OF_CONTROL 252 help 253 This enables the FDT library (libfdt). It provides functions for 254 accessing binary device tree images in memory, such as adding and 255 removing nodes and properties, scanning through the tree and finding 256 particular compatible nodes. The library operates on a flattened 257 version of the device tree. 258 259config TPL_OF_LIBFDT 260 bool "Enable the FDT library for TPL" 261 default y if TPL_OF_CONTROL 262 help 263 This enables the FDT library (libfdt). It provides functions for 264 accessing binary device tree images in memory, such as adding and 265 removing nodes and properties, scanning through the tree and finding 266 particular compatible nodes. The library operates on a flattened 267 version of the device tree. 268 269config FDT_FIXUP_PARTITIONS 270 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'" 271 depends on OF_LIBFDT 272 default n 273 help 274 Allow overwriting defined partitions in the device tree blob 275 using partition info defined in the 'mtdparts' environment 276 variable. 277 278menu "System tables" 279 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER) 280 281config GENERATE_SMBIOS_TABLE 282 bool "Generate an SMBIOS (System Management BIOS) table" 283 default y 284 depends on X86 || EFI_LOADER 285 help 286 The System Management BIOS (SMBIOS) specification addresses how 287 motherboard and system vendors present management information about 288 their products in a standard format by extending the BIOS interface 289 on Intel architecture systems. 290 291 Check http://www.dmtf.org/standards/smbios for details. 292 293config SMBIOS_MANUFACTURER 294 string "SMBIOS Manufacturer" 295 depends on GENERATE_SMBIOS_TABLE 296 default SYS_VENDOR 297 help 298 The board manufacturer to store in SMBIOS structures. 299 Change this to override the default one (CONFIG_SYS_VENDOR). 300 301config SMBIOS_PRODUCT_NAME 302 string "SMBIOS Product Name" 303 depends on GENERATE_SMBIOS_TABLE 304 default SYS_BOARD 305 help 306 The product name to store in SMBIOS structures. 307 Change this to override the default one (CONFIG_SYS_BOARD). 308 309endmenu 310 311source lib/efi/Kconfig 312source lib/efi_loader/Kconfig 313source lib/avb/libavb/Kconfig 314source lib/avb/libavb_ab/Kconfig 315source lib/avb/libavb_atx/Kconfig 316source lib/avb/libavb_user/Kconfig 317source lib/avb/rk_avb_user/Kconfig 318source lib/optee_clientApi/Kconfig 319 320endmenu 321