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"
100 depends on SPL || TPL
103 This option enables a tiny, stripped down printf version.
104 This should only be used in space limited environments,
105 like SPL versions with hard memory limits. This version
106 reduces the code size by about 2.5KiB on armv7.
108 The supported format specifiers are %c, %s, %u/%d and %x.
111 bool "Do not reset the system on fatal error"
113 Define this option to stop the system in case of a fatal error,
114 so that you have to reset it manually. This is probably NOT a good
115 idea for an embedded system where you want the system to reboot
116 automatically as fast as possible, but it may be useful during
117 development since you can try to debug the conditions that lead to
121 bool "Enable regular expression support"
124 If this variable is defined, U-Boot is linked against the
125 SLRE (Super Light Regular Expression) library, which adds
126 regex support to some commands, for example "env grep" and
130 prompt "Pseudo-random library support type"
131 depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
134 Select the library to provide pseudo-random number generator
135 functions. LIB_HW_RAND supports certain hardware engines that
136 provide this functionality. If in doubt, select LIB_RAND.
139 bool "Pseudo-random library support"
142 bool "HW Engine for random libray support"
146 config SPL_TINY_MEMSET
147 bool "Use a very small memset() in SPL"
149 The faster memset() is the arch-specific one (if available) enabled
150 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
151 better performance by writing a word at a time. But in very
152 size-constrained environments even this may be too big. Enable this
153 option to reduce code size slightly at the cost of some speed.
155 config TPL_TINY_MEMSET
156 bool "Use a very small memset() in TPL"
158 The faster memset() is the arch-specific one (if available) enabled
159 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
160 better performance by writing a word at a time. But in very
161 size-constrained environments even this may be too big. Enable this
162 option to reduce code size slightly at the cost of some speed.
168 bool "Bit reverse library from Linux"
171 bool "Support for tracing of function calls and timing"
174 Enables function tracing within U-Boot. This allows recording of call
175 traces including timing information. The command can write data to
176 memory for exporting for analysis (e.g. using bootchart).
177 See doc/README.trace for full details.
179 config TRACE_BUFFER_SIZE
180 hex "Size of trace buffer in U-Boot"
184 Sets the size of the trace buffer in U-Boot. This is allocated from
185 memory during relocation. If this buffer is too small, the trace
186 history will be truncated, with later records omitted.
188 If early trace is enabled (i.e. before relocation), this buffer must
189 be large enough to include all the data from the early trace buffer as
190 well, since this is copied over to the main buffer during relocation.
192 A trace record is emitted for each function call and each record is
193 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
194 the size is too small then 'trace stats' will show a message saying
195 how many records were dropped due to buffer overflow.
197 config TRACE_CALL_DEPTH_LIMIT
198 int "Trace call depth limit"
202 Sets the maximum call depth up to which function calls are recorded.
205 bool "Enable tracing before relocation"
208 Sometimes it is helpful to trace execution of U-Boot before
209 relocation. This is possible by using a arch-specific, fixed buffer
210 position in memory. Enable this option to start tracing as early as
211 possible after U-Boot starts.
213 config TRACE_EARLY_SIZE
214 hex "Size of early trace buffer in U-Boot"
215 depends on TRACE_EARLY
218 Sets the size of the early trace buffer in bytes. This is used to hold
219 tracing information before relocation.
221 config TRACE_EARLY_CALL_DEPTH_LIMIT
222 int "Early trace call depth limit"
223 depends on TRACE_EARLY
226 Sets the maximum call depth up to which function calls are recorded
227 during early tracing.
229 config TRACE_EARLY_ADDR
230 hex "Address of early trace buffer in U-Boot"
231 depends on TRACE_EARLY
234 Sets the address of the early trace buffer in U-Boot. This memory
235 must be accessible before relocation.
237 A trace record is emitted for each function call and each record is
238 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
239 the size is too small then the message which says the amount of early
240 data being coped will the the same as the
242 source lib/dhry/Kconfig
244 menu "Security support"
247 bool "Support the AES algorithm"
249 This provides a means to encrypt and decrypt data using the AES
250 (Advanced Encryption Standard). This algorithm uses a symetric key
251 and is widely used as a streaming cipher. Different key lengths are
252 supported by the algorithm but only a 128-bit key is supported at
255 source lib/rsa/Kconfig
258 bool "Trusted Platform Module (TPM) Support"
261 This enables support for TPMs which can be used to provide security
262 features for your board. The TPM can be connected via LPC or I2C
263 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
264 command to interactive the TPM. Driver model support is provided
265 for the low-level TPM interface, but only one TPM is supported at
266 a time by the TPM library.
269 bool "Trusted Platform Module (TPM) Support in SPL"
272 This enables support for TPMs which can be used to provide security
273 features for your board. The TPM can be connected via LPC or I2C
274 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
275 command to interactive the TPM. Driver model support is provided
276 for the low-level TPM interface, but only one TPM is supported at
277 a time by the TPM library.
280 bool "Trusted Platform Module (TPM) Support in TPL"
283 This enables support for TPMs which can be used to provide security
284 features for your board. The TPM can be connected via LPC or I2C
285 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
286 command to interactive the TPM. Driver model support is provided
287 for the low-level TPM interface, but only one TPM is supported at
288 a time by the TPM library.
292 menu "Android Verified Boot"
295 bool "Android Verified Boot 2.0 support"
296 depends on ANDROID_BOOT_IMAGE
299 This enables support of Android Verified Boot 2.0 which can be used
300 to assure the end user of the integrity of the software running on a
301 device. Introduces such features as boot chain of trust, rollback
306 menu "Hashing Support"
309 bool "Enable SHA1 support"
311 This option enables support of hashing using SHA1 algorithm.
312 The hash is calculated in software.
313 The SHA1 algorithm produces a 160-bit (20-byte) hash value
317 bool "Enable SHA256 support"
319 This option enables support of hashing using SHA256 algorithm.
320 The hash is calculated in software.
321 The SHA256 algorithm produces a 256-bit (32-byte) hash value
325 bool "Enable hashing using hardware"
327 This option enables hardware acceleration
328 for SHA1/SHA256 hashing.
329 This affects the 'hash' command and also the
330 hash_lookup_algo() function.
332 config SHA_PROG_HW_ACCEL
333 bool "Enable Progressive hashing support using hardware"
334 depends on SHA_HW_ACCEL
336 This option enables hardware-acceleration for
337 SHA1/SHA256 progressive hashing.
338 Data can be streamed in a block at a time and the hashing
339 is performed in hardware.
352 menu "Compression Support"
355 bool "Enable LZ4 decompression support"
357 If this option is set, support for LZ4 compressed images
358 is included. The LZ4 algorithm can run in-place as long as the
359 compressed image is loaded to the end of the output buffer, and
360 trades lower compression ratios for much faster decompression.
362 NOTE: This implements the release version of the LZ4 frame
363 format as generated by default by the 'lz4' command line tool.
364 This is not the same as the outdated, less efficient legacy
365 frame format currently (2015) implemented in the Linux kernel
366 (generated by 'lz4 -l'). The two formats are incompatible.
369 bool "Enable LZMA decompression support"
371 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
372 a dictionary compression algorithm that provides a high compression
373 ratio and fairly fast decompression speed. See also
374 CONFIG_CMD_LZMADEC which provides a decode command.
377 bool "Enable LZO decompression support"
379 This enables support for LZO compression algorithm.r
382 bool "Enable gzip decompression support"
386 This enables support for GZIP compression algorithm.
392 This enables ZLIB compression lib.
395 bool "Enable Zstandard decompression support"
398 This enables Zstandard decompression library.
401 bool "Enable LZ4 decompression support in SPL"
403 This enables support for tge LZ4 decompression algorithm in SPL. LZ4
404 is a lossless data compression algorithm that is focused on
405 fast compression and decompression speed. It belongs to the LZ77
406 family of byte-oriented compression schemes.
409 bool "Enable LZO decompression support in SPL"
411 This enables support for LZO compression algorithm in the SPL.
414 bool "Enable gzip decompression support for SPL build"
417 This enables support for GZIP compression altorithm for SPL boot.
422 This enables compression lib for SPL boot.
425 bool "Enable Zstandard decompression support in SPL"
428 This enables Zstandard decompression library in the SPL.
433 bool "Enable function for getting errno-related string message"
435 The function errno_str(int errno), returns a pointer to the errno
436 corresponding text message:
437 - if errno is null or positive number - a pointer to "Success" message
438 - if errno is negative - a pointer to errno related message
441 bool "Enable hexdump"
443 This enables functions for printing dumps of binary data.
446 bool "Enable the FDT library"
447 default y if OF_CONTROL
449 This enables the FDT library (libfdt). It provides functions for
450 accessing binary device tree images in memory, such as adding and
451 removing nodes and properties, scanning through the tree and finding
452 particular compatible nodes. The library operates on a flattened
453 version of the device tree.
455 config OF_LIBFDT_OVERLAY
456 bool "Enable the FDT library overlay support"
458 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
460 This enables the FDT library (libfdt) overlay support.
463 bool "Enable the FDT library for SPL"
464 default y if SPL_OF_CONTROL
466 This enables the FDT library (libfdt). It provides functions for
467 accessing binary device tree images in memory, such as adding and
468 removing nodes and properties, scanning through the tree and finding
469 particular compatible nodes. The library operates on a flattened
470 version of the device tree.
473 bool "Enable the FDT library for TPL"
474 default y if TPL_OF_CONTROL
476 This enables the FDT library (libfdt). It provides functions for
477 accessing binary device tree images in memory, such as adding and
478 removing nodes and properties, scanning through the tree and finding
479 particular compatible nodes. The library operates on a flattened
480 version of the device tree.
482 config FDT_FIXUP_PARTITIONS
483 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
485 depends on CMD_MTDPARTS
487 Allow overwriting defined partitions in the device tree blob
488 using partition info defined in the 'mtdparts' environment
492 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
494 config GENERATE_SMBIOS_TABLE
495 bool "Generate an SMBIOS (System Management BIOS) table"
497 depends on X86 || EFI_LOADER
499 The System Management BIOS (SMBIOS) specification addresses how
500 motherboard and system vendors present management information about
501 their products in a standard format by extending the BIOS interface
502 on Intel architecture systems.
504 Check http://www.dmtf.org/standards/smbios for details.
506 config SMBIOS_MANUFACTURER
507 string "SMBIOS Manufacturer"
508 depends on GENERATE_SMBIOS_TABLE
511 The board manufacturer to store in SMBIOS structures.
512 Change this to override the default one (CONFIG_SYS_VENDOR).
514 config SMBIOS_PRODUCT_NAME
515 string "SMBIOS Product Name"
516 depends on GENERATE_SMBIOS_TABLE
519 The product name to store in SMBIOS structures.
520 Change this to override the default one (CONFIG_SYS_BOARD).
524 source lib/efi/Kconfig
525 source lib/efi_loader/Kconfig
526 source lib/optee/Kconfig
529 bool "enable fdtdec test"