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 55source lib/dhry/Kconfig 56 57source lib/rsa/Kconfig 58 59config TPM 60 bool "Trusted Platform Module (TPM) Support" 61 depends on DM 62 help 63 This enables support for TPMs which can be used to provide security 64 features for your board. The TPM can be connected via LPC or I2C 65 and a sandbox TPM is provided for testing purposes. Use the 'tpm' 66 command to interactive the TPM. Driver model support is provided 67 for the low-level TPM interface, but only one TPM is supported at 68 a time by the TPM library. 69 70menu "Hashing Support" 71 72config SHA1 73 bool "Enable SHA1 support" 74 help 75 This option enables support of hashing using SHA1 algorithm. 76 The hash is calculated in software. 77 The SHA1 algorithm produces a 160-bit (20-byte) hash value 78 (digest). 79 80config SHA256 81 bool "Enable SHA256 support" 82 help 83 This option enables support of hashing using SHA256 algorithm. 84 The hash is calculated in software. 85 The SHA256 algorithm produces a 256-bit (32-byte) hash value 86 (digest). 87 88config SHA_HW_ACCEL 89 bool "Enable hashing using hardware" 90 help 91 This option enables hardware acceleration 92 for SHA1/SHA256 hashing. 93 This affects the 'hash' command and also the 94 hash_lookup_algo() function. 95 96config SHA_PROG_HW_ACCEL 97 bool "Enable Progressive hashing support using hardware" 98 depends on SHA_HW_ACCEL 99 help 100 This option enables hardware-acceleration for 101 SHA1/SHA256 progressive hashing. 102 Data can be streamed in a block at a time and the hashing 103 is performed in hardware. 104endmenu 105 106menu "Compression Support" 107 108config LZ4 109 bool "Enable LZ4 decompression support" 110 help 111 If this option is set, support for LZ4 compressed images 112 is included. The LZ4 algorithm can run in-place as long as the 113 compressed image is loaded to the end of the output buffer, and 114 trades lower compression ratios for much faster decompression. 115 116 NOTE: This implements the release version of the LZ4 frame 117 format as generated by default by the 'lz4' command line tool. 118 This is not the same as the outdated, less efficient legacy 119 frame format currently (2015) implemented in the Linux kernel 120 (generated by 'lz4 -l'). The two formats are incompatible. 121 122endmenu 123 124config ERRNO_STR 125 bool "Enable function for getting errno-related string message" 126 help 127 The function errno_str(int errno), returns a pointer to the errno 128 corresponding text message: 129 - if errno is null or positive number - a pointer to "Success" message 130 - if errno is negative - a pointer to errno related message 131 132config OF_LIBFDT 133 bool "Enable the FDT library" 134 default y if OF_CONTROL 135 help 136 This enables the FDT library (libfdt). It provides functions for 137 accessing binary device tree images in memory, such as adding and 138 removing notes and properties, scanning through the tree and finding 139 particular compatible nodes. The library operates on a flattened 140 version of the device tree. 141 142config SPL_OF_LIBFDT 143 bool "Enable the FDT library for SPL" 144 default y if SPL_OF_CONTROL 145 help 146 This enables the FDT library (libfdt). It provides functions for 147 accessing binary device tree images in memory, such as adding and 148 removing notes and properties, scanning through the tree and finding 149 particular compatible nodes. The library operates on a flattened 150 version of the device tree. 151 152source lib/efi/Kconfig 153source lib/efi_loader/Kconfig 154 155endmenu 156