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
18 This option allows you to use the built-in libgcc implementation
19 of U-boot instead of the one privided by the compiler.
26 The frequency of the timer returned by get_timer().
27 get_timer() must operate in milliseconds and this option must be
31 bool "Enable safe version of sprintf()"
33 Since sprintf() can overflow its buffer, it is common to use
34 snprintf() instead, which knows the buffer size and can avoid
35 overflow. However, this does increase code size slightly (for
36 Thumb-2, about 420 bytes). Enable this option for safety when
37 using sprintf() with data you do not control.
40 bool "Enable regular expression support"
43 If this variable is defined, U-Boot is linked against the
44 SLRE (Super Light Regular Expression) library, which adds
45 regex support to some commands, for example "env grep" and
49 bool "Pseudo-random library support "
51 This library provides pseudo-random number generator functions.
53 source lib/dhry/Kconfig
55 source lib/rsa/Kconfig
58 bool "Trusted Platform Module (TPM) Support"
61 This enables support for TPMs which can be used to provide security
62 features for your board. The TPM can be connected via LPC or I2C
63 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
64 command to interactive the TPM. Driver model support is provided
65 for the low-level TPM interface, but only one TPM is supported at
66 a time by the TPM library.
68 menu "Hashing Support"
71 bool "Enable SHA1 support"
73 This option enables support of hashing using SHA1 algorithm.
74 The hash is calculated in software.
75 The SHA1 algorithm produces a 160-bit (20-byte) hash value
79 bool "Enable SHA256 support"
81 This option enables support of hashing using SHA256 algorithm.
82 The hash is calculated in software.
83 The SHA256 algorithm produces a 256-bit (32-byte) hash value
87 bool "Enable hashing using hardware"
89 This option enables hardware acceleration
90 for SHA1/SHA256 hashing.
91 This affects the 'hash' command and also the
92 hash_lookup_algo() function.
94 config SHA_PROG_HW_ACCEL
95 bool "Enable Progressive hashing support using hardware"
96 depends on SHA_HW_ACCEL
98 This option enables hardware-acceleration for
99 SHA1/SHA256 progressive hashing.
100 Data can be streamed in a block at a time and the hashing
101 is performed in hardware.
104 menu "Compression Support"
107 bool "Enable LZ4 decompression support"
109 If this option is set, support for LZ4 compressed images
110 is included. The LZ4 algorithm can run in-place as long as the
111 compressed image is loaded to the end of the output buffer, and
112 trades lower compression ratios for much faster decompression.
114 NOTE: This implements the release version of the LZ4 frame
115 format as generated by default by the 'lz4' command line tool.
116 This is not the same as the outdated, less efficient legacy
117 frame format currently (2015) implemented in the Linux kernel
118 (generated by 'lz4 -l'). The two formats are incompatible.
123 bool "Enable function for getting errno-related string message"
125 The function errno_str(int errno), returns a pointer to the errno
126 corresponding text message:
127 - if errno is null or positive number - a pointer to "Success" message
128 - if errno is negative - a pointer to errno related message
130 source lib/efi/Kconfig