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.
11 bool "Allow access to binman information in the device tree"
12 depends on BINMAN && OF_CONTROL
15 This enables U-Boot to access information about binman entries,
16 stored in the device tree in a binman node. Typical uses are to
17 locate entries in the firmware image. See binman.h for the available
20 config CC_OPTIMIZE_LIBS_FOR_SPEED
21 bool "Optimize libraries for speed"
23 Enabling this option will pass "-O2" to gcc when compiling
24 under "lib" directory.
28 config DYNAMIC_CRC_TABLE
29 bool "Enable Dynamic tables for CRC"
31 Enable this option to calculate entries for CRC tables at runtime.
32 This can be helpful when reducing the size of the build image
34 config HAVE_ARCH_IOMAP
37 Enable this option if architecture provides io{read,write}{8,16,32}
38 I/O accessor functions.
40 config HAVE_PRIVATE_LIBGCC
53 select SPL_STRTO if !SPL_USE_TINY_PRINTF
58 select TPL_STRTO if !TPL_USE_TINY_PRINTF
83 config IMAGE_SPARSE_FILLBUF_SIZE
84 hex "Android sparse image CHUNK_TYPE_FILL buffer size"
86 depends on IMAGE_SPARSE
88 Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
91 config USE_PRIVATE_LIBGCC
92 bool "Use private libgcc"
93 depends on HAVE_PRIVATE_LIBGCC
94 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
96 This option allows you to use the built-in libgcc implementation
97 of U-Boot instead of the one provided by the compiler.
104 The frequency of the timer returned by get_timer().
105 get_timer() must operate in milliseconds and this option must be
108 config SPL_USE_TINY_PRINTF
109 bool "Enable tiny printf() version in SPL"
113 This option enables a tiny, stripped down printf version.
114 This should only be used in space limited environments,
115 like SPL versions with hard memory limits. This version
116 reduces the code size by about 2.5KiB on armv7.
118 The supported format specifiers are %c, %s, %u/%d and %x.
120 config TPL_USE_TINY_PRINTF
121 bool "Enable tiny printf() version in TPL"
123 default y if SPL_USE_TINY_PRINTF
125 This option enables a tiny, stripped down printf version.
126 This should only be used in space limited environments,
127 like SPL versions with hard memory limits. This version
128 reduces the code size by about 2.5KiB on armv7.
130 The supported format specifiers are %c, %s, %u/%d and %x.
133 bool "Do not reset the system on fatal error"
135 Define this option to stop the system in case of a fatal error,
136 so that you have to reset it manually. This is probably NOT a good
137 idea for an embedded system where you want the system to reboot
138 automatically as fast as possible, but it may be useful during
139 development since you can try to debug the conditions that lead to
143 bool "Enable regular expression support"
146 If this variable is defined, U-Boot is linked against the
147 SLRE (Super Light Regular Expression) library, which adds
148 regex support to some commands, for example "env grep" and
152 prompt "Pseudo-random library support type"
153 depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
156 Select the library to provide pseudo-random number generator
157 functions. LIB_HW_RAND supports certain hardware engines that
158 provide this functionality. If in doubt, select LIB_RAND.
161 bool "Pseudo-random library support"
164 bool "HW Engine for random libray support"
168 config SPL_TINY_MEMSET
169 bool "Use a very small memset() in SPL"
171 The faster memset() is the arch-specific one (if available) enabled
172 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
173 better performance by writing a word at a time. But in very
174 size-constrained environments even this may be too big. Enable this
175 option to reduce code size slightly at the cost of some speed.
177 config TPL_TINY_MEMSET
178 bool "Use a very small memset() in TPL"
180 The faster memset() is the arch-specific one (if available) enabled
181 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
182 better performance by writing a word at a time. But in very
183 size-constrained environments even this may be too big. Enable this
184 option to reduce code size slightly at the cost of some speed.
190 bool "Bit reverse library from Linux"
193 bool "Support for tracing of function calls and timing"
196 Enables function tracing within U-Boot. This allows recording of call
197 traces including timing information. The command can write data to
198 memory for exporting for analysis (e.g. using bootchart).
199 See doc/README.trace for full details.
201 config TRACE_BUFFER_SIZE
202 hex "Size of trace buffer in U-Boot"
206 Sets the size of the trace buffer in U-Boot. This is allocated from
207 memory during relocation. If this buffer is too small, the trace
208 history will be truncated, with later records omitted.
210 If early trace is enabled (i.e. before relocation), this buffer must
211 be large enough to include all the data from the early trace buffer as
212 well, since this is copied over to the main buffer during relocation.
214 A trace record is emitted for each function call and each record is
215 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
216 the size is too small then 'trace stats' will show a message saying
217 how many records were dropped due to buffer overflow.
219 config TRACE_CALL_DEPTH_LIMIT
220 int "Trace call depth limit"
224 Sets the maximum call depth up to which function calls are recorded.
227 bool "Enable tracing before relocation"
230 Sometimes it is helpful to trace execution of U-Boot before
231 relocation. This is possible by using a arch-specific, fixed buffer
232 position in memory. Enable this option to start tracing as early as
233 possible after U-Boot starts.
235 config TRACE_EARLY_SIZE
236 hex "Size of early trace buffer in U-Boot"
237 depends on TRACE_EARLY
240 Sets the size of the early trace buffer in bytes. This is used to hold
241 tracing information before relocation.
243 config TRACE_EARLY_CALL_DEPTH_LIMIT
244 int "Early trace call depth limit"
245 depends on TRACE_EARLY
248 Sets the maximum call depth up to which function calls are recorded
249 during early tracing.
251 config TRACE_EARLY_ADDR
252 hex "Address of early trace buffer in U-Boot"
253 depends on TRACE_EARLY
256 Sets the address of the early trace buffer in U-Boot. This memory
257 must be accessible before relocation.
259 A trace record is emitted for each function call and each record is
260 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
261 the size is too small then the message which says the amount of early
262 data being coped will the the same as the
264 source lib/dhry/Kconfig
266 menu "Security support"
269 bool "Support the AES algorithm"
271 This provides a means to encrypt and decrypt data using the AES
272 (Advanced Encryption Standard). This algorithm uses a symetric key
273 and is widely used as a streaming cipher. Different key lengths are
274 supported by the algorithm but only a 128-bit key is supported at
277 source lib/rsa/Kconfig
278 source lib/crypto/Kconfig
281 bool "Trusted Platform Module (TPM) Support"
284 This enables support for TPMs which can be used to provide security
285 features for your board. The TPM can be connected via LPC or I2C
286 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
287 command to interactive the TPM. Driver model support is provided
288 for the low-level TPM interface, but only one TPM is supported at
289 a time by the TPM library.
292 bool "Trusted Platform Module (TPM) Support in SPL"
295 This enables support for TPMs which can be used to provide security
296 features for your board. The TPM can be connected via LPC or I2C
297 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
298 command to interactive the TPM. Driver model support is provided
299 for the low-level TPM interface, but only one TPM is supported at
300 a time by the TPM library.
303 bool "Trusted Platform Module (TPM) Support in TPL"
306 This enables support for TPMs which can be used to provide security
307 features for your board. The TPM can be connected via LPC or I2C
308 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
309 command to interactive the TPM. Driver model support is provided
310 for the low-level TPM interface, but only one TPM is supported at
311 a time by the TPM library.
315 menu "Android Verified Boot"
318 bool "Android Verified Boot 2.0 support"
319 depends on ANDROID_BOOT_IMAGE
322 This enables support of Android Verified Boot 2.0 which can be used
323 to assure the end user of the integrity of the software running on a
324 device. Introduces such features as boot chain of trust, rollback
329 menu "Hashing Support"
332 bool "Enable SHA1 support"
334 This option enables support of hashing using SHA1 algorithm.
335 The hash is calculated in software.
336 The SHA1 algorithm produces a 160-bit (20-byte) hash value
340 bool "Enable SHA256 support"
342 This option enables support of hashing using SHA256 algorithm.
343 The hash is calculated in software.
344 The SHA256 algorithm produces a 256-bit (32-byte) hash value
348 bool "Enable hashing using hardware"
350 This option enables hardware acceleration
351 for SHA1/SHA256 hashing.
352 This affects the 'hash' command and also the
353 hash_lookup_algo() function.
355 config SHA_PROG_HW_ACCEL
356 bool "Enable Progressive hashing support using hardware"
357 depends on SHA_HW_ACCEL
359 This option enables hardware-acceleration for
360 SHA1/SHA256 progressive hashing.
361 Data can be streamed in a block at a time and the hashing
362 is performed in hardware.
375 menu "Compression Support"
378 bool "Enable LZ4 decompression support"
380 If this option is set, support for LZ4 compressed images
381 is included. The LZ4 algorithm can run in-place as long as the
382 compressed image is loaded to the end of the output buffer, and
383 trades lower compression ratios for much faster decompression.
385 NOTE: This implements the release version of the LZ4 frame
386 format as generated by default by the 'lz4' command line tool.
387 This is not the same as the outdated, less efficient legacy
388 frame format currently (2015) implemented in the Linux kernel
389 (generated by 'lz4 -l'). The two formats are incompatible.
392 bool "Enable LZMA decompression support"
394 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
395 a dictionary compression algorithm that provides a high compression
396 ratio and fairly fast decompression speed. See also
397 CONFIG_CMD_LZMADEC which provides a decode command.
400 bool "Enable LZO decompression support"
402 This enables support for LZO compression algorithm.r
405 bool "Enable gzip decompression support"
409 This enables support for GZIP compression algorithm.
415 This enables ZLIB compression lib.
418 bool "Enable Zstandard decompression support"
421 This enables Zstandard decompression library.
424 bool "Enable LZ4 decompression support in SPL"
426 This enables support for tge LZ4 decompression algorithm in SPL. LZ4
427 is a lossless data compression algorithm that is focused on
428 fast compression and decompression speed. It belongs to the LZ77
429 family of byte-oriented compression schemes.
432 bool "Enable LZO decompression support in SPL"
434 This enables support for LZO compression algorithm in the SPL.
437 bool "Enable gzip decompression support for SPL build"
440 This enables support for GZIP compression altorithm for SPL boot.
445 This enables compression lib for SPL boot.
448 bool "Enable Zstandard decompression support in SPL"
451 This enables Zstandard decompression library in the SPL.
456 bool "Enable function for getting errno-related string message"
458 The function errno_str(int errno), returns a pointer to the errno
459 corresponding text message:
460 - if errno is null or positive number - a pointer to "Success" message
461 - if errno is negative - a pointer to errno related message
464 bool "Enable hexdump"
466 This enables functions for printing dumps of binary data.
469 bool "Enable the FDT library"
470 default y if OF_CONTROL
472 This enables the FDT library (libfdt). It provides functions for
473 accessing binary device tree images in memory, such as adding and
474 removing nodes and properties, scanning through the tree and finding
475 particular compatible nodes. The library operates on a flattened
476 version of the device tree.
478 config OF_LIBFDT_ASSUME_MASK
479 hex "Mask of conditions to assume for libfdt"
480 depends on OF_LIBFDT || FIT
483 Use this to change the assumptions made by libfdt about the
484 device tree it is working with. A value of 0 means that no assumptions
485 are made, and libfdt is able to deal with malicious data. A value of
486 0xff means all assumptions are made and any invalid data may cause
487 unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h
489 config OF_LIBFDT_OVERLAY
490 bool "Enable the FDT library overlay support"
492 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
494 This enables the FDT library (libfdt) overlay support.
497 bool "Enable the FDT library for SPL"
498 default y if SPL_OF_CONTROL
500 This enables the FDT library (libfdt). It provides functions for
501 accessing binary device tree images in memory, such as adding and
502 removing nodes and properties, scanning through the tree and finding
503 particular compatible nodes. The library operates on a flattened
504 version of the device tree.
506 config SPL_OF_LIBFDT_ASSUME_MASK
507 hex "Mask of conditions to assume for libfdt"
508 depends on SPL_OF_LIBFDT || FIT
511 Use this to change the assumptions made by libfdt in SPL about the
512 device tree it is working with. A value of 0 means that no assumptions
513 are made, and libfdt is able to deal with malicious data. A value of
514 0xff means all assumptions are made and any invalid data may cause
515 unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h
518 bool "Enable the FDT library for TPL"
519 default y if TPL_OF_CONTROL
521 This enables the FDT library (libfdt). It provides functions for
522 accessing binary device tree images in memory, such as adding and
523 removing nodes and properties, scanning through the tree and finding
524 particular compatible nodes. The library operates on a flattened
525 version of the device tree.
527 config TPL_OF_LIBFDT_ASSUME_MASK
528 hex "Mask of conditions to assume for libfdt"
529 depends on TPL_OF_LIBFDT || FIT
532 Use this to change the assumptions made by libfdt in TPL about the
533 device tree it is working with. A value of 0 means that no assumptions
534 are made, and libfdt is able to deal with malicious data. A value of
535 0xff means all assumptions are made and any invalid data may cause
536 unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h
538 config FDT_FIXUP_PARTITIONS
539 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
541 depends on CMD_MTDPARTS
543 Allow overwriting defined partitions in the device tree blob
544 using partition info defined in the 'mtdparts' environment
548 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
550 config GENERATE_SMBIOS_TABLE
551 bool "Generate an SMBIOS (System Management BIOS) table"
553 depends on X86 || EFI_LOADER
555 The System Management BIOS (SMBIOS) specification addresses how
556 motherboard and system vendors present management information about
557 their products in a standard format by extending the BIOS interface
558 on Intel architecture systems.
560 Check http://www.dmtf.org/standards/smbios for details.
562 config SMBIOS_MANUFACTURER
563 string "SMBIOS Manufacturer"
564 depends on GENERATE_SMBIOS_TABLE
567 The board manufacturer to store in SMBIOS structures.
568 Change this to override the default one (CONFIG_SYS_VENDOR).
570 config SMBIOS_PRODUCT_NAME
571 string "SMBIOS Product Name"
572 depends on GENERATE_SMBIOS_TABLE
575 The product name to store in SMBIOS structures.
576 Change this to override the default one (CONFIG_SYS_BOARD).
586 Enable asn1 decoder library.
591 Enable fast lookup object identifier registry.
593 source lib/efi/Kconfig
594 source lib/efi_loader/Kconfig
595 source lib/optee/Kconfig
598 bool "enable fdtdec test"