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.
189 bool "Trusted Platform Module (TPM) Support in SPL"
192 This enables support for TPMs which can be used to provide security
193 features for your board. The TPM can be connected via LPC or I2C
194 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
195 command to interactive the TPM. Driver model support is provided
196 for the low-level TPM interface, but only one TPM is supported at
197 a time by the TPM library.
200 bool "Trusted Platform Module (TPM) Support in TPL"
203 This enables support for TPMs which can be used to provide security
204 features for your board. The TPM can be connected via LPC or I2C
205 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
206 command to interactive the TPM. Driver model support is provided
207 for the low-level TPM interface, but only one TPM is supported at
208 a time by the TPM library.
212 menu "Android Verified Boot"
215 bool "Android Verified Boot 2.0 support"
216 depends on ANDROID_BOOT_IMAGE
219 This enables support of Android Verified Boot 2.0 which can be used
220 to assure the end user of the integrity of the software running on a
221 device. Introduces such features as boot chain of trust, rollback
226 menu "Hashing Support"
229 bool "Enable SHA1 support"
231 This option enables support of hashing using SHA1 algorithm.
232 The hash is calculated in software.
233 The SHA1 algorithm produces a 160-bit (20-byte) hash value
237 bool "Enable SHA256 support"
239 This option enables support of hashing using SHA256 algorithm.
240 The hash is calculated in software.
241 The SHA256 algorithm produces a 256-bit (32-byte) hash value
245 bool "Enable hashing using hardware"
247 This option enables hardware acceleration
248 for SHA1/SHA256 hashing.
249 This affects the 'hash' command and also the
250 hash_lookup_algo() function.
252 config SHA_PROG_HW_ACCEL
253 bool "Enable Progressive hashing support using hardware"
254 depends on SHA_HW_ACCEL
256 This option enables hardware-acceleration for
257 SHA1/SHA256 progressive hashing.
258 Data can be streamed in a block at a time and the hashing
259 is performed in hardware.
269 menu "Compression Support"
272 bool "Enable LZ4 decompression support"
274 If this option is set, support for LZ4 compressed images
275 is included. The LZ4 algorithm can run in-place as long as the
276 compressed image is loaded to the end of the output buffer, and
277 trades lower compression ratios for much faster decompression.
279 NOTE: This implements the release version of the LZ4 frame
280 format as generated by default by the 'lz4' command line tool.
281 This is not the same as the outdated, less efficient legacy
282 frame format currently (2015) implemented in the Linux kernel
283 (generated by 'lz4 -l'). The two formats are incompatible.
286 bool "Enable LZMA decompression support"
288 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
289 a dictionary compression algorithm that provides a high compression
290 ratio and fairly fast decompression speed. See also
291 CONFIG_CMD_LZMADEC which provides a decode command.
294 bool "Enable LZO decompression support"
296 This enables support for LZO compression algorithm.r
299 bool "Enable LZO decompression support in SPL"
301 This enables support for LZO compression algorithm in the SPL.
304 bool "Enable gzip decompression support for SPL build"
307 This enables support for GZIP compression altorithm for SPL boot.
312 This enables compression lib for SPL boot.
317 bool "Enable function for getting errno-related string message"
319 The function errno_str(int errno), returns a pointer to the errno
320 corresponding text message:
321 - if errno is null or positive number - a pointer to "Success" message
322 - if errno is negative - a pointer to errno related message
325 bool "Enable hexdump"
327 This enables functions for printing dumps of binary data.
330 bool "Enable the FDT library"
331 default y if OF_CONTROL
333 This enables the FDT library (libfdt). It provides functions for
334 accessing binary device tree images in memory, such as adding and
335 removing nodes and properties, scanning through the tree and finding
336 particular compatible nodes. The library operates on a flattened
337 version of the device tree.
339 config OF_LIBFDT_OVERLAY
340 bool "Enable the FDT library overlay support"
342 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
344 This enables the FDT library (libfdt) overlay support.
347 bool "Enable the FDT library for SPL"
348 default y if SPL_OF_CONTROL
350 This enables the FDT library (libfdt). It provides functions for
351 accessing binary device tree images in memory, such as adding and
352 removing nodes and properties, scanning through the tree and finding
353 particular compatible nodes. The library operates on a flattened
354 version of the device tree.
357 bool "Enable the FDT library for TPL"
358 default y if TPL_OF_CONTROL
360 This enables the FDT library (libfdt). It provides functions for
361 accessing binary device tree images in memory, such as adding and
362 removing nodes and properties, scanning through the tree and finding
363 particular compatible nodes. The library operates on a flattened
364 version of the device tree.
366 config FDT_FIXUP_PARTITIONS
367 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
369 depends on CMD_MTDPARTS
371 Allow overwriting defined partitions in the device tree blob
372 using partition info defined in the 'mtdparts' environment
376 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
378 config GENERATE_SMBIOS_TABLE
379 bool "Generate an SMBIOS (System Management BIOS) table"
381 depends on X86 || EFI_LOADER
383 The System Management BIOS (SMBIOS) specification addresses how
384 motherboard and system vendors present management information about
385 their products in a standard format by extending the BIOS interface
386 on Intel architecture systems.
388 Check http://www.dmtf.org/standards/smbios for details.
390 config SMBIOS_MANUFACTURER
391 string "SMBIOS Manufacturer"
392 depends on GENERATE_SMBIOS_TABLE
395 The board manufacturer to store in SMBIOS structures.
396 Change this to override the default one (CONFIG_SYS_VENDOR).
398 config SMBIOS_PRODUCT_NAME
399 string "SMBIOS Product Name"
400 depends on GENERATE_SMBIOS_TABLE
403 The product name to store in SMBIOS structures.
404 Change this to override the default one (CONFIG_SYS_BOARD).
408 source lib/efi/Kconfig
409 source lib/efi_loader/Kconfig
410 source lib/optee/Kconfig