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 "Do not reset the system on fatal error"
51 Define this option to stop the system in case of a fatal error,
52 so that you have to reset it manually. This is probably NOT a good
53 idea for an embedded system where you want the system to reboot
54 automatically as fast as possible, but it may be useful during
55 development since you can try to debug the conditions that lead to
59 bool "Enable regular expression support"
62 If this variable is defined, U-Boot is linked against the
63 SLRE (Super Light Regular Expression) library, which adds
64 regex support to some commands, for example "env grep" and
68 bool "Pseudo-random library support "
70 This library provides pseudo-random number generator functions.
72 config SPL_TINY_MEMSET
73 bool "Use a very small memset() in SPL"
75 The faster memset() is the arch-specific one (if available) enabled
76 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
77 better performance by writing a word at a time. But in very
78 size-constrained envrionments even this may be too big. Enable this
79 option to reduce code size slightly at the cost of some speed.
81 config TPL_TINY_MEMSET
82 bool "Use a very small memset() in TPL"
84 The faster memset() is the arch-specific one (if available) enabled
85 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
86 better performance by writing a word at a time. But in very
87 size-constrained envrionments even this may be too big. Enable this
88 option to reduce code size slightly at the cost of some speed.
94 bool "Bit reverse library from Linux"
96 source lib/dhry/Kconfig
98 menu "Security support"
101 bool "Support the AES algorithm"
103 This provides a means to encrypt and decrypt data using the AES
104 (Advanced Encryption Standard). This algorithm uses a symetric key
105 and is widely used as a streaming cipher. Different key lengths are
106 supported by the algorithm but only a 128-bit key is supported at
109 source lib/rsa/Kconfig
112 bool "Trusted Platform Module (TPM) Support"
115 This enables support for TPMs which can be used to provide security
116 features for your board. The TPM can be connected via LPC or I2C
117 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
118 command to interactive the TPM. Driver model support is provided
119 for the low-level TPM interface, but only one TPM is supported at
120 a time by the TPM library.
124 menu "Hashing Support"
127 bool "Enable SHA1 support"
129 This option enables support of hashing using SHA1 algorithm.
130 The hash is calculated in software.
131 The SHA1 algorithm produces a 160-bit (20-byte) hash value
135 bool "Enable SHA256 support"
137 This option enables support of hashing using SHA256 algorithm.
138 The hash is calculated in software.
139 The SHA256 algorithm produces a 256-bit (32-byte) hash value
143 bool "Enable hashing using hardware"
145 This option enables hardware acceleration
146 for SHA1/SHA256 hashing.
147 This affects the 'hash' command and also the
148 hash_lookup_algo() function.
150 config SHA_PROG_HW_ACCEL
151 bool "Enable Progressive hashing support using hardware"
152 depends on SHA_HW_ACCEL
154 This option enables hardware-acceleration for
155 SHA1/SHA256 progressive hashing.
156 Data can be streamed in a block at a time and the hashing
157 is performed in hardware.
167 menu "Compression Support"
170 bool "Enable LZ4 decompression support"
172 If this option is set, support for LZ4 compressed images
173 is included. The LZ4 algorithm can run in-place as long as the
174 compressed image is loaded to the end of the output buffer, and
175 trades lower compression ratios for much faster decompression.
177 NOTE: This implements the release version of the LZ4 frame
178 format as generated by default by the 'lz4' command line tool.
179 This is not the same as the outdated, less efficient legacy
180 frame format currently (2015) implemented in the Linux kernel
181 (generated by 'lz4 -l'). The two formats are incompatible.
184 bool "Enable LZMA decompression support"
186 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
187 a dictionary compression algorithm that provides a high compression
188 ratio and fairly fast decompression speed. See also
189 CONFIG_CMD_LZMADEC which provides a decode command.
192 bool "Enable LZO decompression support"
194 This enables support for LZO compression algorithm.r
197 bool "Enable LZO decompression support in SPL"
199 This enables support for LZO compression algorithm in the SPL.
202 bool "Enable gzip decompression support for SPL build"
205 This enables support for GZIP compression altorithm for SPL boot.
210 This enables compression lib for SPL boot.
215 bool "Enable function for getting errno-related string message"
217 The function errno_str(int errno), returns a pointer to the errno
218 corresponding text message:
219 - if errno is null or positive number - a pointer to "Success" message
220 - if errno is negative - a pointer to errno related message
223 bool "Enable the FDT library"
224 default y if OF_CONTROL
226 This enables the FDT library (libfdt). It provides functions for
227 accessing binary device tree images in memory, such as adding and
228 removing nodes and properties, scanning through the tree and finding
229 particular compatible nodes. The library operates on a flattened
230 version of the device tree.
232 config OF_LIBFDT_OVERLAY
233 bool "Enable the FDT library overlay support"
235 This enables the FDT library (libfdt) overlay support.
238 bool "Enable the FDT library for SPL"
239 default y if SPL_OF_CONTROL
241 This enables the FDT library (libfdt). It provides functions for
242 accessing binary device tree images in memory, such as adding and
243 removing nodes and properties, scanning through the tree and finding
244 particular compatible nodes. The library operates on a flattened
245 version of the device tree.
247 config FDT_FIXUP_PARTITIONS
248 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
252 Allow overwriting defined partitions in the device tree blob
253 using partition info defined in the 'mtdparts' environment
257 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
259 config GENERATE_SMBIOS_TABLE
260 bool "Generate an SMBIOS (System Management BIOS) table"
262 depends on X86 || EFI_LOADER
264 The System Management BIOS (SMBIOS) specification addresses how
265 motherboard and system vendors present management information about
266 their products in a standard format by extending the BIOS interface
267 on Intel architecture systems.
269 Check http://www.dmtf.org/standards/smbios for details.
271 config SMBIOS_MANUFACTURER
272 string "SMBIOS Manufacturer"
273 depends on GENERATE_SMBIOS_TABLE
276 The board manufacturer to store in SMBIOS structures.
277 Change this to override the default one (CONFIG_SYS_VENDOR).
279 config SMBIOS_PRODUCT_NAME
280 string "SMBIOS Product Name"
281 depends on GENERATE_SMBIOS_TABLE
284 The product name to store in SMBIOS structures.
285 Change this to override the default one (CONFIG_SYS_BOARD).
289 source lib/efi/Kconfig
290 source lib/efi_loader/Kconfig