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_ARCH_IOMAP
27 Enable this option if architecture provides io{read,write}{8,16,32}
28 I/O accessor functions.
30 config HAVE_PRIVATE_LIBGCC
43 select SPL_STRTO if !USE_TINY_PRINTF
48 select TPL_STRTO if !USE_TINY_PRINTF
73 config IMAGE_SPARSE_FILLBUF_SIZE
74 hex "Android sparse image CHUNK_TYPE_FILL buffer size"
76 depends on IMAGE_SPARSE
78 Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
81 config USE_PRIVATE_LIBGCC
82 bool "Use private libgcc"
83 depends on HAVE_PRIVATE_LIBGCC
84 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
86 This option allows you to use the built-in libgcc implementation
87 of U-Boot instead of the one provided by the compiler.
94 The frequency of the timer returned by get_timer().
95 get_timer() must operate in milliseconds and this option must be
98 config USE_TINY_PRINTF
99 bool "Enable tiny printf() version"
101 This option enables a tiny, stripped down printf version.
102 This should only be used in space limited environments,
103 like SPL versions with hard memory limits. This version
104 reduces the code size by about 2.5KiB on armv7.
106 The supported format specifiers are %c, %s, %u/%d and %x.
109 bool "Do not reset the system on fatal error"
111 Define this option to stop the system in case of a fatal error,
112 so that you have to reset it manually. This is probably NOT a good
113 idea for an embedded system where you want the system to reboot
114 automatically as fast as possible, but it may be useful during
115 development since you can try to debug the conditions that lead to
119 bool "Enable regular expression support"
122 If this variable is defined, U-Boot is linked against the
123 SLRE (Super Light Regular Expression) library, which adds
124 regex support to some commands, for example "env grep" and
128 prompt "Pseudo-random library support type"
129 depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
132 Select the library to provide pseudo-random number generator
133 functions. LIB_HW_RAND supports certain hardware engines that
134 provide this functionality. If in doubt, select LIB_RAND.
137 bool "Pseudo-random library support"
140 bool "HW Engine for random libray support"
144 config SPL_TINY_MEMSET
145 bool "Use a very small memset() in SPL"
147 The faster memset() is the arch-specific one (if available) enabled
148 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
149 better performance by writing a word at a time. But in very
150 size-constrained environments even this may be too big. Enable this
151 option to reduce code size slightly at the cost of some speed.
153 config TPL_TINY_MEMSET
154 bool "Use a very small memset() in TPL"
156 The faster memset() is the arch-specific one (if available) enabled
157 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
158 better performance by writing a word at a time. But in very
159 size-constrained environments even this may be too big. Enable this
160 option to reduce code size slightly at the cost of some speed.
166 bool "Bit reverse library from Linux"
169 bool "Support for tracing of function calls and timing"
172 Enables function tracing within U-Boot. This allows recording of call
173 traces including timing information. The command can write data to
174 memory for exporting for analysis (e.g. using bootchart).
175 See doc/README.trace for full details.
177 config TRACE_BUFFER_SIZE
178 hex "Size of trace buffer in U-Boot"
182 Sets the size of the trace buffer in U-Boot. This is allocated from
183 memory during relocation. If this buffer is too small, the trace
184 history will be truncated, with later records omitted.
186 If early trace is enabled (i.e. before relocation), this buffer must
187 be large enough to include all the data from the early trace buffer as
188 well, since this is copied over to the main buffer during relocation.
190 A trace record is emitted for each function call and each record is
191 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
192 the size is too small then 'trace stats' will show a message saying
193 how many records were dropped due to buffer overflow.
196 bool "Enable tracing before relocation"
199 Sometimes it is helpful to trace execution of U-Boot before
200 relocation. This is possible by using a arch-specific, fixed buffer
201 position in memory. Enable this option to start tracing as early as
202 possible after U-Boot starts.
204 config TRACE_EARLY_SIZE
205 hex "Size of early trace buffer in U-Boot"
206 depends on TRACE_EARLY
209 Sets the size of the early trace buffer in bytes. This is used to hold
210 tracing information before relocation.
212 config TRACE_EARLY_ADDR
213 hex "Address of early trace buffer in U-Boot"
214 depends on TRACE_EARLY
217 Sets the address of the early trace buffer in U-Boot. This memory
218 must be accessible before relocation.
220 A trace record is emitted for each function call and each record is
221 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
222 the size is too small then the message which says the amount of early
223 data being coped will the the same as the
225 source lib/dhry/Kconfig
227 menu "Security support"
230 bool "Support the AES algorithm"
232 This provides a means to encrypt and decrypt data using the AES
233 (Advanced Encryption Standard). This algorithm uses a symetric key
234 and is widely used as a streaming cipher. Different key lengths are
235 supported by the algorithm but only a 128-bit key is supported at
238 source lib/rsa/Kconfig
241 bool "Trusted Platform Module (TPM) Support"
244 This enables support for TPMs which can be used to provide security
245 features for your board. The TPM can be connected via LPC or I2C
246 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
247 command to interactive the TPM. Driver model support is provided
248 for the low-level TPM interface, but only one TPM is supported at
249 a time by the TPM library.
252 bool "Trusted Platform Module (TPM) Support in SPL"
255 This enables support for TPMs which can be used to provide security
256 features for your board. The TPM can be connected via LPC or I2C
257 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
258 command to interactive the TPM. Driver model support is provided
259 for the low-level TPM interface, but only one TPM is supported at
260 a time by the TPM library.
263 bool "Trusted Platform Module (TPM) Support in TPL"
266 This enables support for TPMs which can be used to provide security
267 features for your board. The TPM can be connected via LPC or I2C
268 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
269 command to interactive the TPM. Driver model support is provided
270 for the low-level TPM interface, but only one TPM is supported at
271 a time by the TPM library.
275 menu "Android Verified Boot"
278 bool "Android Verified Boot 2.0 support"
279 depends on ANDROID_BOOT_IMAGE
282 This enables support of Android Verified Boot 2.0 which can be used
283 to assure the end user of the integrity of the software running on a
284 device. Introduces such features as boot chain of trust, rollback
289 menu "Hashing Support"
292 bool "Enable SHA1 support"
294 This option enables support of hashing using SHA1 algorithm.
295 The hash is calculated in software.
296 The SHA1 algorithm produces a 160-bit (20-byte) hash value
300 bool "Enable SHA256 support"
302 This option enables support of hashing using SHA256 algorithm.
303 The hash is calculated in software.
304 The SHA256 algorithm produces a 256-bit (32-byte) hash value
308 bool "Enable hashing using hardware"
310 This option enables hardware acceleration
311 for SHA1/SHA256 hashing.
312 This affects the 'hash' command and also the
313 hash_lookup_algo() function.
315 config SHA_PROG_HW_ACCEL
316 bool "Enable Progressive hashing support using hardware"
317 depends on SHA_HW_ACCEL
319 This option enables hardware-acceleration for
320 SHA1/SHA256 progressive hashing.
321 Data can be streamed in a block at a time and the hashing
322 is performed in hardware.
332 menu "Compression Support"
335 bool "Enable LZ4 decompression support"
337 If this option is set, support for LZ4 compressed images
338 is included. The LZ4 algorithm can run in-place as long as the
339 compressed image is loaded to the end of the output buffer, and
340 trades lower compression ratios for much faster decompression.
342 NOTE: This implements the release version of the LZ4 frame
343 format as generated by default by the 'lz4' command line tool.
344 This is not the same as the outdated, less efficient legacy
345 frame format currently (2015) implemented in the Linux kernel
346 (generated by 'lz4 -l'). The two formats are incompatible.
349 bool "Enable LZMA decompression support"
351 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
352 a dictionary compression algorithm that provides a high compression
353 ratio and fairly fast decompression speed. See also
354 CONFIG_CMD_LZMADEC which provides a decode command.
357 bool "Enable LZO decompression support"
359 This enables support for LZO compression algorithm.r
362 bool "Enable gzip decompression support"
366 This enables support for GZIP compression algorithm.
372 This enables ZLIB compression lib.
375 bool "Enable LZ4 decompression support in SPL"
377 This enables support for tge LZ4 decompression algorithm in SPL. LZ4
378 is a lossless data compression algorithm that is focused on
379 fast compression and decompression speed. It belongs to the LZ77
380 family of byte-oriented compression schemes.
383 bool "Enable LZO decompression support in SPL"
385 This enables support for LZO compression algorithm in the SPL.
388 bool "Enable gzip decompression support for SPL build"
391 This enables support for GZIP compression altorithm for SPL boot.
396 This enables compression lib for SPL boot.
401 bool "Enable function for getting errno-related string message"
403 The function errno_str(int errno), returns a pointer to the errno
404 corresponding text message:
405 - if errno is null or positive number - a pointer to "Success" message
406 - if errno is negative - a pointer to errno related message
409 bool "Enable hexdump"
411 This enables functions for printing dumps of binary data.
414 bool "Enable the FDT library"
415 default y if OF_CONTROL
417 This enables the FDT library (libfdt). It provides functions for
418 accessing binary device tree images in memory, such as adding and
419 removing nodes and properties, scanning through the tree and finding
420 particular compatible nodes. The library operates on a flattened
421 version of the device tree.
423 config OF_LIBFDT_OVERLAY
424 bool "Enable the FDT library overlay support"
426 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
428 This enables the FDT library (libfdt) overlay support.
431 bool "Enable the FDT library for SPL"
432 default y if SPL_OF_CONTROL
434 This enables the FDT library (libfdt). It provides functions for
435 accessing binary device tree images in memory, such as adding and
436 removing nodes and properties, scanning through the tree and finding
437 particular compatible nodes. The library operates on a flattened
438 version of the device tree.
441 bool "Enable the FDT library for TPL"
442 default y if TPL_OF_CONTROL
444 This enables the FDT library (libfdt). It provides functions for
445 accessing binary device tree images in memory, such as adding and
446 removing nodes and properties, scanning through the tree and finding
447 particular compatible nodes. The library operates on a flattened
448 version of the device tree.
450 config FDT_FIXUP_PARTITIONS
451 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
453 depends on CMD_MTDPARTS
455 Allow overwriting defined partitions in the device tree blob
456 using partition info defined in the 'mtdparts' environment
460 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
462 config GENERATE_SMBIOS_TABLE
463 bool "Generate an SMBIOS (System Management BIOS) table"
465 depends on X86 || EFI_LOADER
467 The System Management BIOS (SMBIOS) specification addresses how
468 motherboard and system vendors present management information about
469 their products in a standard format by extending the BIOS interface
470 on Intel architecture systems.
472 Check http://www.dmtf.org/standards/smbios for details.
474 config SMBIOS_MANUFACTURER
475 string "SMBIOS Manufacturer"
476 depends on GENERATE_SMBIOS_TABLE
479 The board manufacturer to store in SMBIOS structures.
480 Change this to override the default one (CONFIG_SYS_VENDOR).
482 config SMBIOS_PRODUCT_NAME
483 string "SMBIOS Product Name"
484 depends on GENERATE_SMBIOS_TABLE
487 The product name to store in SMBIOS structures.
488 Change this to override the default one (CONFIG_SYS_BOARD).
492 source lib/efi/Kconfig
493 source lib/efi_loader/Kconfig
494 source lib/optee/Kconfig
497 bool "enable fdtdec test"