1 menu "Library routines"
4 bool "Enable Software based BCH ECC"
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.
10 config CC_OPTIMIZE_LIBS_FOR_SPEED
11 bool "Optimize libraries for speed"
13 Enabling this option will pass "-O2" to gcc when compiling
14 under "lib" directory.
18 config HAVE_PRIVATE_LIBGCC
21 config USE_PRIVATE_LIBGCC
22 bool "Use private libgcc"
23 depends on HAVE_PRIVATE_LIBGCC
24 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
26 This option allows you to use the built-in libgcc implementation
27 of U-Boot instead of the one provided by the compiler.
34 The frequency of the timer returned by get_timer().
35 get_timer() must operate in milliseconds and this option must be
38 config USE_TINY_PRINTF
39 bool "Enable tiny printf() version"
41 This option enables a tiny, stripped down printf version.
42 This should only be used in space limited environments,
43 like SPL versions with hard memory limits. This version
44 reduces the code size by about 2.5KiB on armv7.
46 The supported format specifiers are %c, %s, %u/%d and %x.
49 bool "Enable regular expression support"
52 If this variable is defined, U-Boot is linked against the
53 SLRE (Super Light Regular Expression) library, which adds
54 regex support to some commands, for example "env grep" and
58 bool "Pseudo-random library support "
60 This library provides pseudo-random number generator functions.
62 config SPL_TINY_MEMSET
63 bool "Use a very small memset() in SPL"
65 The faster memset() is the arch-specific one (if available) enabled
66 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
67 better performance by writing a word at a time. But in very
68 size-constrained envrionments even this may be too big. Enable this
69 option to reduce code size slightly at the cost of some speed.
71 config TPL_TINY_MEMSET
72 bool "Use a very small memset() in TPL"
74 The faster memset() is the arch-specific one (if available) enabled
75 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
76 better performance by writing a word at a time. But in very
77 size-constrained envrionments even this may be too big. Enable this
78 option to reduce code size slightly at the cost of some speed.
83 source lib/dhry/Kconfig
85 menu "Security support"
88 bool "Support the AES algorithm"
90 This provides a means to encrypt and decrypt data using the AES
91 (Advanced Encryption Standard). This algorithm uses a symetric key
92 and is widely used as a streaming cipher. Different key lengths are
93 supported by the algorithm but only a 128-bit key is supported at
96 source lib/rsa/Kconfig
99 bool "Trusted Platform Module (TPM) Support"
102 This enables support for TPMs which can be used to provide security
103 features for your board. The TPM can be connected via LPC or I2C
104 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
105 command to interactive the TPM. Driver model support is provided
106 for the low-level TPM interface, but only one TPM is supported at
107 a time by the TPM library.
111 menu "Hashing Support"
114 bool "Enable SHA1 support"
116 This option enables support of hashing using SHA1 algorithm.
117 The hash is calculated in software.
118 The SHA1 algorithm produces a 160-bit (20-byte) hash value
122 bool "Enable SHA256 support"
124 This option enables support of hashing using SHA256 algorithm.
125 The hash is calculated in software.
126 The SHA256 algorithm produces a 256-bit (32-byte) hash value
130 bool "Enable hashing using hardware"
132 This option enables hardware acceleration
133 for SHA1/SHA256 hashing.
134 This affects the 'hash' command and also the
135 hash_lookup_algo() function.
137 config SHA_PROG_HW_ACCEL
138 bool "Enable Progressive hashing support using hardware"
139 depends on SHA_HW_ACCEL
141 This option enables hardware-acceleration for
142 SHA1/SHA256 progressive hashing.
143 Data can be streamed in a block at a time and the hashing
144 is performed in hardware.
151 menu "Compression Support"
154 bool "Enable LZ4 decompression support"
156 If this option is set, support for LZ4 compressed images
157 is included. The LZ4 algorithm can run in-place as long as the
158 compressed image is loaded to the end of the output buffer, and
159 trades lower compression ratios for much faster decompression.
161 NOTE: This implements the release version of the LZ4 frame
162 format as generated by default by the 'lz4' command line tool.
163 This is not the same as the outdated, less efficient legacy
164 frame format currently (2015) implemented in the Linux kernel
165 (generated by 'lz4 -l'). The two formats are incompatible.
168 bool "Enable LZMA decompression support"
170 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
171 a dictionary compression algorithm that provides a high compression
172 ratio and fairly fast decompression speed. See also
173 CONFIG_CMD_LZMADEC which provides a decode command.
176 bool "Enable LZO decompression support"
178 This enables support for LZO compression algorithm.r
182 bool "Enable function for getting errno-related string message"
184 The function errno_str(int errno), returns a pointer to the errno
185 corresponding text message:
186 - if errno is null or positive number - a pointer to "Success" message
187 - if errno is negative - a pointer to errno related message
190 bool "Enable the FDT library"
191 default y if OF_CONTROL
193 This enables the FDT library (libfdt). It provides functions for
194 accessing binary device tree images in memory, such as adding and
195 removing nodes and properties, scanning through the tree and finding
196 particular compatible nodes. The library operates on a flattened
197 version of the device tree.
199 config OF_LIBFDT_OVERLAY
200 bool "Enable the FDT library overlay support"
202 This enables the FDT library (libfdt) overlay support.
205 bool "Enable the FDT library for SPL"
206 default y if SPL_OF_CONTROL
208 This enables the FDT library (libfdt). It provides functions for
209 accessing binary device tree images in memory, such as adding and
210 removing nodes and properties, scanning through the tree and finding
211 particular compatible nodes. The library operates on a flattened
212 version of the device tree.
214 config FDT_FIXUP_PARTITIONS
215 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
219 Allow overwriting defined partitions in the device tree blob
220 using partition info defined in the 'mtdparts' environment
224 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
226 config GENERATE_SMBIOS_TABLE
227 bool "Generate an SMBIOS (System Management BIOS) table"
229 depends on X86 || EFI_LOADER
231 The System Management BIOS (SMBIOS) specification addresses how
232 motherboard and system vendors present management information about
233 their products in a standard format by extending the BIOS interface
234 on Intel architecture systems.
236 Check http://www.dmtf.org/standards/smbios for details.
238 config SMBIOS_MANUFACTURER
239 string "SMBIOS Manufacturer"
240 depends on GENERATE_SMBIOS_TABLE
243 The board manufacturer to store in SMBIOS structures.
244 Change this to override the default one (CONFIG_SYS_VENDOR).
246 config SMBIOS_PRODUCT_NAME
247 string "SMBIOS Product Name"
248 depends on GENERATE_SMBIOS_TABLE
251 The product name to store in SMBIOS structures.
252 Change this to override the default one (CONFIG_SYS_BOARD).
256 source lib/efi/Kconfig
257 source lib/efi_loader/Kconfig