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 DYNAMIC_CRC_TABLE
19 bool "Enable Dynamic tables for CRC"
21 Enable this option to calculate entries for CRC tables at runtime.
22 This can be helpful when reducing the size of the build image
24 config HAVE_PRIVATE_LIBGCC
37 select SPL_STRTO if !USE_TINY_PRINTF
42 select TPL_STRTO if !USE_TINY_PRINTF
67 config IMAGE_SPARSE_FILLBUF_SIZE
68 hex "Android sparse image CHUNK_TYPE_FILL buffer size"
70 depends on IMAGE_SPARSE
72 Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
75 config USE_PRIVATE_LIBGCC
76 bool "Use private libgcc"
77 depends on HAVE_PRIVATE_LIBGCC
78 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
80 This option allows you to use the built-in libgcc implementation
81 of U-Boot instead of the one provided by the compiler.
88 The frequency of the timer returned by get_timer().
89 get_timer() must operate in milliseconds and this option must be
92 config USE_TINY_PRINTF
93 bool "Enable tiny printf() version"
95 This option enables a tiny, stripped down printf version.
96 This should only be used in space limited environments,
97 like SPL versions with hard memory limits. This version
98 reduces the code size by about 2.5KiB on armv7.
100 The supported format specifiers are %c, %s, %u/%d and %x.
103 bool "Do not reset the system on fatal error"
105 Define this option to stop the system in case of a fatal error,
106 so that you have to reset it manually. This is probably NOT a good
107 idea for an embedded system where you want the system to reboot
108 automatically as fast as possible, but it may be useful during
109 development since you can try to debug the conditions that lead to
113 bool "Enable regular expression support"
116 If this variable is defined, U-Boot is linked against the
117 SLRE (Super Light Regular Expression) library, which adds
118 regex support to some commands, for example "env grep" and
122 prompt "Pseudo-random library support type"
123 depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
126 Select the library to provide pseudo-random number generator
127 functions. LIB_HW_RAND supports certain hardware engines that
128 provide this functionality. If in doubt, select LIB_RAND.
131 bool "Pseudo-random library support"
134 bool "HW Engine for random libray support"
138 config SPL_TINY_MEMSET
139 bool "Use a very small memset() in SPL"
141 The faster memset() is the arch-specific one (if available) enabled
142 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
143 better performance by writing a word at a time. But in very
144 size-constrained envrionments even this may be too big. Enable this
145 option to reduce code size slightly at the cost of some speed.
147 config TPL_TINY_MEMSET
148 bool "Use a very small memset() in TPL"
150 The faster memset() is the arch-specific one (if available) enabled
151 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
152 better performance by writing a word at a time. But in very
153 size-constrained envrionments even this may be too big. Enable this
154 option to reduce code size slightly at the cost of some speed.
160 bool "Bit reverse library from Linux"
162 source lib/dhry/Kconfig
164 menu "Security support"
167 bool "Support the AES algorithm"
169 This provides a means to encrypt and decrypt data using the AES
170 (Advanced Encryption Standard). This algorithm uses a symetric key
171 and is widely used as a streaming cipher. Different key lengths are
172 supported by the algorithm but only a 128-bit key is supported at
175 source lib/rsa/Kconfig
178 bool "Trusted Platform Module (TPM) Support"
181 This enables support for TPMs which can be used to provide security
182 features for your board. The TPM can be connected via LPC or I2C
183 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
184 command to interactive the TPM. Driver model support is provided
185 for the low-level TPM interface, but only one TPM is supported at
186 a time by the TPM library.
190 menu "Hashing Support"
193 bool "Enable SHA1 support"
195 This option enables support of hashing using SHA1 algorithm.
196 The hash is calculated in software.
197 The SHA1 algorithm produces a 160-bit (20-byte) hash value
201 bool "Enable SHA256 support"
203 This option enables support of hashing using SHA256 algorithm.
204 The hash is calculated in software.
205 The SHA256 algorithm produces a 256-bit (32-byte) hash value
209 bool "Enable hashing using hardware"
211 This option enables hardware acceleration
212 for SHA1/SHA256 hashing.
213 This affects the 'hash' command and also the
214 hash_lookup_algo() function.
216 config SHA_PROG_HW_ACCEL
217 bool "Enable Progressive hashing support using hardware"
218 depends on SHA_HW_ACCEL
220 This option enables hardware-acceleration for
221 SHA1/SHA256 progressive hashing.
222 Data can be streamed in a block at a time and the hashing
223 is performed in hardware.
233 menu "Compression Support"
236 bool "Enable LZ4 decompression support"
238 If this option is set, support for LZ4 compressed images
239 is included. The LZ4 algorithm can run in-place as long as the
240 compressed image is loaded to the end of the output buffer, and
241 trades lower compression ratios for much faster decompression.
243 NOTE: This implements the release version of the LZ4 frame
244 format as generated by default by the 'lz4' command line tool.
245 This is not the same as the outdated, less efficient legacy
246 frame format currently (2015) implemented in the Linux kernel
247 (generated by 'lz4 -l'). The two formats are incompatible.
250 bool "Enable LZMA decompression support"
252 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
253 a dictionary compression algorithm that provides a high compression
254 ratio and fairly fast decompression speed. See also
255 CONFIG_CMD_LZMADEC which provides a decode command.
258 bool "Enable LZO decompression support"
260 This enables support for LZO compression algorithm.r
263 bool "Enable LZO decompression support in SPL"
265 This enables support for LZO compression algorithm in the SPL.
268 bool "Enable gzip decompression support for SPL build"
271 This enables support for GZIP compression altorithm for SPL boot.
276 This enables compression lib for SPL boot.
281 bool "Enable function for getting errno-related string message"
283 The function errno_str(int errno), returns a pointer to the errno
284 corresponding text message:
285 - if errno is null or positive number - a pointer to "Success" message
286 - if errno is negative - a pointer to errno related message
289 bool "Enable hexdump"
291 This enables functions for printing dumps of binary data.
294 bool "Enable the FDT library"
295 default y if OF_CONTROL
297 This enables the FDT library (libfdt). It provides functions for
298 accessing binary device tree images in memory, such as adding and
299 removing nodes and properties, scanning through the tree and finding
300 particular compatible nodes. The library operates on a flattened
301 version of the device tree.
303 config OF_LIBFDT_OVERLAY
304 bool "Enable the FDT library overlay support"
306 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
308 This enables the FDT library (libfdt) overlay support.
311 bool "Enable the FDT library for SPL"
312 default y if SPL_OF_CONTROL
314 This enables the FDT library (libfdt). It provides functions for
315 accessing binary device tree images in memory, such as adding and
316 removing nodes and properties, scanning through the tree and finding
317 particular compatible nodes. The library operates on a flattened
318 version of the device tree.
320 config FDT_FIXUP_PARTITIONS
321 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
325 Allow overwriting defined partitions in the device tree blob
326 using partition info defined in the 'mtdparts' environment
330 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
332 config GENERATE_SMBIOS_TABLE
333 bool "Generate an SMBIOS (System Management BIOS) table"
335 depends on X86 || EFI_LOADER
337 The System Management BIOS (SMBIOS) specification addresses how
338 motherboard and system vendors present management information about
339 their products in a standard format by extending the BIOS interface
340 on Intel architecture systems.
342 Check http://www.dmtf.org/standards/smbios for details.
344 config SMBIOS_MANUFACTURER
345 string "SMBIOS Manufacturer"
346 depends on GENERATE_SMBIOS_TABLE
349 The board manufacturer to store in SMBIOS structures.
350 Change this to override the default one (CONFIG_SYS_VENDOR).
352 config SMBIOS_PRODUCT_NAME
353 string "SMBIOS Product Name"
354 depends on GENERATE_SMBIOS_TABLE
357 The product name to store in SMBIOS structures.
358 Change this to override the default one (CONFIG_SYS_BOARD).
362 source lib/efi/Kconfig
363 source lib/efi_loader/Kconfig
364 source lib/optee/Kconfig