1 menu "Library routines"
3 config CC_OPTIMIZE_LIBS_FOR_SPEED
4 bool "Optimize libraries for speed"
6 Enabling this option will pass "-O2" to gcc when compiling
11 config HAVE_PRIVATE_LIBGCC
14 config USE_PRIVATE_LIBGCC
15 bool "Use private libgcc"
16 depends on HAVE_PRIVATE_LIBGCC
17 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
19 This option allows you to use the built-in libgcc implementation
20 of U-Boot instead of the one provided by the compiler.
27 The frequency of the timer returned by get_timer().
28 get_timer() must operate in milliseconds and this option must be
31 config USE_TINY_PRINTF
32 bool "Enable tiny printf() version"
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.
39 The supported format specifiers are %c, %s, %u/%d and %x.
42 bool "Enable regular expression support"
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
51 bool "Pseudo-random library support "
53 This library provides pseudo-random number generator functions.
55 source lib/dhry/Kconfig
57 source lib/rsa/Kconfig
60 bool "Trusted Platform Module (TPM) Support"
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.
70 menu "Hashing Support"
73 bool "Enable SHA1 support"
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
81 bool "Enable SHA256 support"
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
89 bool "Enable hashing using hardware"
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.
96 config SHA_PROG_HW_ACCEL
97 bool "Enable Progressive hashing support using hardware"
98 depends on SHA_HW_ACCEL
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.
106 menu "Compression Support"
109 bool "Enable LZ4 decompression support"
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.
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.
125 bool "Enable function for getting errno-related string message"
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
133 bool "Enable the FDT library"
134 default y if OF_CONTROL
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.
143 bool "Enable the FDT library for SPL"
144 default y if SPL_OF_CONTROL
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.
152 source lib/efi/Kconfig
153 source lib/efi_loader/Kconfig