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.
195 config TRACE_CALL_DEPTH_LIMIT
196 int "Trace call depth limit"
200 Sets the maximum call depth up to which function calls are recorded.
203 bool "Enable tracing before relocation"
206 Sometimes it is helpful to trace execution of U-Boot before
207 relocation. This is possible by using a arch-specific, fixed buffer
208 position in memory. Enable this option to start tracing as early as
209 possible after U-Boot starts.
211 config TRACE_EARLY_SIZE
212 hex "Size of early trace buffer in U-Boot"
213 depends on TRACE_EARLY
216 Sets the size of the early trace buffer in bytes. This is used to hold
217 tracing information before relocation.
219 config TRACE_EARLY_CALL_DEPTH_LIMIT
220 int "Early trace call depth limit"
221 depends on TRACE_EARLY
224 Sets the maximum call depth up to which function calls are recorded
225 during early tracing.
227 config TRACE_EARLY_ADDR
228 hex "Address of early trace buffer in U-Boot"
229 depends on TRACE_EARLY
232 Sets the address of the early trace buffer in U-Boot. This memory
233 must be accessible before relocation.
235 A trace record is emitted for each function call and each record is
236 12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
237 the size is too small then the message which says the amount of early
238 data being coped will the the same as the
240 source lib/dhry/Kconfig
242 menu "Security support"
245 bool "Support the AES algorithm"
247 This provides a means to encrypt and decrypt data using the AES
248 (Advanced Encryption Standard). This algorithm uses a symetric key
249 and is widely used as a streaming cipher. Different key lengths are
250 supported by the algorithm but only a 128-bit key is supported at
253 source lib/rsa/Kconfig
256 bool "Trusted Platform Module (TPM) Support"
259 This enables support for TPMs which can be used to provide security
260 features for your board. The TPM can be connected via LPC or I2C
261 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
262 command to interactive the TPM. Driver model support is provided
263 for the low-level TPM interface, but only one TPM is supported at
264 a time by the TPM library.
267 bool "Trusted Platform Module (TPM) Support in SPL"
270 This enables support for TPMs which can be used to provide security
271 features for your board. The TPM can be connected via LPC or I2C
272 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
273 command to interactive the TPM. Driver model support is provided
274 for the low-level TPM interface, but only one TPM is supported at
275 a time by the TPM library.
278 bool "Trusted Platform Module (TPM) Support in TPL"
281 This enables support for TPMs which can be used to provide security
282 features for your board. The TPM can be connected via LPC or I2C
283 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
284 command to interactive the TPM. Driver model support is provided
285 for the low-level TPM interface, but only one TPM is supported at
286 a time by the TPM library.
290 menu "Android Verified Boot"
293 bool "Android Verified Boot 2.0 support"
294 depends on ANDROID_BOOT_IMAGE
297 This enables support of Android Verified Boot 2.0 which can be used
298 to assure the end user of the integrity of the software running on a
299 device. Introduces such features as boot chain of trust, rollback
304 menu "Hashing Support"
307 bool "Enable SHA1 support"
309 This option enables support of hashing using SHA1 algorithm.
310 The hash is calculated in software.
311 The SHA1 algorithm produces a 160-bit (20-byte) hash value
315 bool "Enable SHA256 support"
317 This option enables support of hashing using SHA256 algorithm.
318 The hash is calculated in software.
319 The SHA256 algorithm produces a 256-bit (32-byte) hash value
323 bool "Enable hashing using hardware"
325 This option enables hardware acceleration
326 for SHA1/SHA256 hashing.
327 This affects the 'hash' command and also the
328 hash_lookup_algo() function.
330 config SHA_PROG_HW_ACCEL
331 bool "Enable Progressive hashing support using hardware"
332 depends on SHA_HW_ACCEL
334 This option enables hardware-acceleration for
335 SHA1/SHA256 progressive hashing.
336 Data can be streamed in a block at a time and the hashing
337 is performed in hardware.
350 menu "Compression Support"
353 bool "Enable LZ4 decompression support"
355 If this option is set, support for LZ4 compressed images
356 is included. The LZ4 algorithm can run in-place as long as the
357 compressed image is loaded to the end of the output buffer, and
358 trades lower compression ratios for much faster decompression.
360 NOTE: This implements the release version of the LZ4 frame
361 format as generated by default by the 'lz4' command line tool.
362 This is not the same as the outdated, less efficient legacy
363 frame format currently (2015) implemented in the Linux kernel
364 (generated by 'lz4 -l'). The two formats are incompatible.
367 bool "Enable LZMA decompression support"
369 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
370 a dictionary compression algorithm that provides a high compression
371 ratio and fairly fast decompression speed. See also
372 CONFIG_CMD_LZMADEC which provides a decode command.
375 bool "Enable LZO decompression support"
377 This enables support for LZO compression algorithm.r
380 bool "Enable gzip decompression support"
384 This enables support for GZIP compression algorithm.
390 This enables ZLIB compression lib.
393 bool "Enable Zstandard decompression support"
396 This enables Zstandard decompression library.
399 bool "Enable LZ4 decompression support in SPL"
401 This enables support for tge LZ4 decompression algorithm in SPL. LZ4
402 is a lossless data compression algorithm that is focused on
403 fast compression and decompression speed. It belongs to the LZ77
404 family of byte-oriented compression schemes.
407 bool "Enable LZO decompression support in SPL"
409 This enables support for LZO compression algorithm in the SPL.
412 bool "Enable gzip decompression support for SPL build"
415 This enables support for GZIP compression altorithm for SPL boot.
420 This enables compression lib for SPL boot.
423 bool "Enable Zstandard decompression support in SPL"
426 This enables Zstandard decompression library in the SPL.
431 bool "Enable function for getting errno-related string message"
433 The function errno_str(int errno), returns a pointer to the errno
434 corresponding text message:
435 - if errno is null or positive number - a pointer to "Success" message
436 - if errno is negative - a pointer to errno related message
439 bool "Enable hexdump"
441 This enables functions for printing dumps of binary data.
444 bool "Enable the FDT library"
445 default y if OF_CONTROL
447 This enables the FDT library (libfdt). It provides functions for
448 accessing binary device tree images in memory, such as adding and
449 removing nodes and properties, scanning through the tree and finding
450 particular compatible nodes. The library operates on a flattened
451 version of the device tree.
453 config OF_LIBFDT_OVERLAY
454 bool "Enable the FDT library overlay support"
456 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
458 This enables the FDT library (libfdt) overlay support.
461 bool "Enable the FDT library for SPL"
462 default y if SPL_OF_CONTROL
464 This enables the FDT library (libfdt). It provides functions for
465 accessing binary device tree images in memory, such as adding and
466 removing nodes and properties, scanning through the tree and finding
467 particular compatible nodes. The library operates on a flattened
468 version of the device tree.
471 bool "Enable the FDT library for TPL"
472 default y if TPL_OF_CONTROL
474 This enables the FDT library (libfdt). It provides functions for
475 accessing binary device tree images in memory, such as adding and
476 removing nodes and properties, scanning through the tree and finding
477 particular compatible nodes. The library operates on a flattened
478 version of the device tree.
480 config FDT_FIXUP_PARTITIONS
481 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
483 depends on CMD_MTDPARTS
485 Allow overwriting defined partitions in the device tree blob
486 using partition info defined in the 'mtdparts' environment
490 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
492 config GENERATE_SMBIOS_TABLE
493 bool "Generate an SMBIOS (System Management BIOS) table"
495 depends on X86 || EFI_LOADER
497 The System Management BIOS (SMBIOS) specification addresses how
498 motherboard and system vendors present management information about
499 their products in a standard format by extending the BIOS interface
500 on Intel architecture systems.
502 Check http://www.dmtf.org/standards/smbios for details.
504 config SMBIOS_MANUFACTURER
505 string "SMBIOS Manufacturer"
506 depends on GENERATE_SMBIOS_TABLE
509 The board manufacturer to store in SMBIOS structures.
510 Change this to override the default one (CONFIG_SYS_VENDOR).
512 config SMBIOS_PRODUCT_NAME
513 string "SMBIOS Product Name"
514 depends on GENERATE_SMBIOS_TABLE
517 The product name to store in SMBIOS structures.
518 Change this to override the default one (CONFIG_SYS_BOARD).
522 source lib/efi/Kconfig
523 source lib/efi_loader/Kconfig
524 source lib/optee/Kconfig
527 bool "enable fdtdec test"