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1menu "Library routines"
2
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3config BCH
4 bool "Enable Software based BCH ECC"
5 help
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.
9
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10config CC_OPTIMIZE_LIBS_FOR_SPEED
11 bool "Optimize libraries for speed"
12 help
13 Enabling this option will pass "-O2" to gcc when compiling
14 under "lib" directory.
15
16 If unsure, say N.
17
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18config DYNAMIC_CRC_TABLE
19 bool "Enable Dynamic tables for CRC"
20 help
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
23
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24config HAVE_PRIVATE_LIBGCC
25 bool
26
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27config LIB_UUID
28 bool
29
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30config PRINTF
31 bool
32 default y
33
34config SPL_PRINTF
35 bool
36 select SPL_SPRINTF
37 select SPL_STRTO if !USE_TINY_PRINTF
38
39config TPL_PRINTF
40 bool
41 select TPL_SPRINTF
42 select TPL_STRTO if !USE_TINY_PRINTF
43
44config SPRINTF
45 bool
46 default y
47
48config SPL_SPRINTF
49 bool
50
51config TPL_SPRINTF
52 bool
53
54config STRTO
55 bool
56 default y
57
58config SPL_STRTO
59 bool
60
61config TPL_STRTO
62 bool
63
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64config IMAGE_SPARSE
65 bool
66
67config IMAGE_SPARSE_FILLBUF_SIZE
68 hex "Android sparse image CHUNK_TYPE_FILL buffer size"
69 default 0x80000
70 depends on IMAGE_SPARSE
71 help
72 Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
73 chunks.
74
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75config USE_PRIVATE_LIBGCC
76 bool "Use private libgcc"
77 depends on HAVE_PRIVATE_LIBGCC
91b86e21 78 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
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79 help
80 This option allows you to use the built-in libgcc implementation
67976306 81 of U-Boot instead of the one provided by the compiler.
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82 If unsure, say N.
83
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84config SYS_HZ
85 int
86 default 1000
87 help
88 The frequency of the timer returned by get_timer().
89 get_timer() must operate in milliseconds and this option must be
90 set to 1000.
91
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92config USE_TINY_PRINTF
93 bool "Enable tiny printf() version"
94 help
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.
99
100 The supported format specifiers are %c, %s, %u/%d and %x.
101
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102config PANIC_HANG
103 bool "Do not reset the system on fatal error"
104 help
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
110 the situation.
111
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112config REGEX
113 bool "Enable regular expression support"
f7848d90 114 default y if NET
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115 help
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
119 "setexpr".
120
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121choice
122 prompt "Pseudo-random library support type"
123 depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID
124 default LIB_RAND
3850dbe8 125 help
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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.
129
130config LIB_RAND
131 bool "Pseudo-random library support"
132
133config LIB_HW_RAND
134 bool "HW Engine for random libray support"
135
136endchoice
9ba9e85f 137
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138config SPL_TINY_MEMSET
139 bool "Use a very small memset() in SPL"
140 help
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.
146
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147config TPL_TINY_MEMSET
148 bool "Use a very small memset() in TPL"
149 help
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.
155
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156config RBTREE
157 bool
158
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159config BITREVERSE
160 bool "Bit reverse library from Linux"
161
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162source lib/dhry/Kconfig
163
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164menu "Security support"
165
166config AES
167 bool "Support the AES algorithm"
168 help
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
173 present.
174
d9f23c7f 175source lib/rsa/Kconfig
c4beb22f 176
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177config TPM
178 bool "Trusted Platform Module (TPM) Support"
2419cd16 179 depends on DM
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180 help
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.
187
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188endmenu
189
94e3c8c4 190menu "Hashing Support"
191
192config SHA1
193 bool "Enable SHA1 support"
194 help
195 This option enables support of hashing using SHA1 algorithm.
196 The hash is calculated in software.
197 The SHA1 algorithm produces a 160-bit (20-byte) hash value
198 (digest).
199
200config SHA256
201 bool "Enable SHA256 support"
202 help
203 This option enables support of hashing using SHA256 algorithm.
204 The hash is calculated in software.
205 The SHA256 algorithm produces a 256-bit (32-byte) hash value
206 (digest).
207
208config SHA_HW_ACCEL
209 bool "Enable hashing using hardware"
210 help
211 This option enables hardware acceleration
212 for SHA1/SHA256 hashing.
213 This affects the 'hash' command and also the
214 hash_lookup_algo() function.
215
216config SHA_PROG_HW_ACCEL
217 bool "Enable Progressive hashing support using hardware"
218 depends on SHA_HW_ACCEL
219 help
220 This option enables hardware-acceleration for
221 SHA1/SHA256 progressive hashing.
222 Data can be streamed in a block at a time and the hashing
223 is performed in hardware.
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224
225config MD5
226 bool
227
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228config CRC32C
229 bool
230
94e3c8c4 231endmenu
232
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233menu "Compression Support"
234
235config LZ4
236 bool "Enable LZ4 decompression support"
237 help
238 If this option is set, support for LZ4 compressed images
239 is included. The LZ4 algorithm can run in-place as long as the
240 compressed image is loaded to the end of the output buffer, and
241 trades lower compression ratios for much faster decompression.
242
243 NOTE: This implements the release version of the LZ4 frame
244 format as generated by default by the 'lz4' command line tool.
245 This is not the same as the outdated, less efficient legacy
246 frame format currently (2015) implemented in the Linux kernel
247 (generated by 'lz4 -l'). The two formats are incompatible.
248
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249config LZMA
250 bool "Enable LZMA decompression support"
251 help
252 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
253 a dictionary compression algorithm that provides a high compression
254 ratio and fairly fast decompression speed. See also
255 CONFIG_CMD_LZMADEC which provides a decode command.
256
173aafbf 257config LZO
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258 bool "Enable LZO decompression support"
259 help
260 This enables support for LZO compression algorithm.r
7264f292 261
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262config SPL_LZO
263 bool "Enable LZO decompression support in SPL"
264 help
265 This enables support for LZO compression algorithm in the SPL.
266
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267config SPL_GZIP
268 bool "Enable gzip decompression support for SPL build"
269 select SPL_ZLIB
270 help
271 This enables support for GZIP compression altorithm for SPL boot.
272
273config SPL_ZLIB
274 bool
275 help
276 This enables compression lib for SPL boot.
277
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278endmenu
279
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280config ERRNO_STR
281 bool "Enable function for getting errno-related string message"
282 help
283 The function errno_str(int errno), returns a pointer to the errno
284 corresponding text message:
285 - if errno is null or positive number - a pointer to "Success" message
286 - if errno is negative - a pointer to errno related message
287
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288config HEXDUMP
289 bool "Enable hexdump"
290 help
291 This enables functions for printing dumps of binary data.
292
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293config OF_LIBFDT
294 bool "Enable the FDT library"
295 default y if OF_CONTROL
296 help
297 This enables the FDT library (libfdt). It provides functions for
298 accessing binary device tree images in memory, such as adding and
f1a7ba1d 299 removing nodes and properties, scanning through the tree and finding
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300 particular compatible nodes. The library operates on a flattened
301 version of the device tree.
302
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303config OF_LIBFDT_OVERLAY
304 bool "Enable the FDT library overlay support"
6417572e 305 depends on OF_LIBFDT
58a46f88 306 default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE
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307 help
308 This enables the FDT library (libfdt) overlay support.
309
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310config SPL_OF_LIBFDT
311 bool "Enable the FDT library for SPL"
312 default y if SPL_OF_CONTROL
313 help
314 This enables the FDT library (libfdt). It provides functions for
315 accessing binary device tree images in memory, such as adding and
f1a7ba1d 316 removing nodes and properties, scanning through the tree and finding
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317 particular compatible nodes. The library operates on a flattened
318 version of the device tree.
319
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320config FDT_FIXUP_PARTITIONS
321 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
322 depends on OF_LIBFDT
323 default n
324 help
325 Allow overwriting defined partitions in the device tree blob
326 using partition info defined in the 'mtdparts' environment
327 variable.
328
4b6dddc2 329menu "System tables"
e663b350 330 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
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331
332config GENERATE_SMBIOS_TABLE
333 bool "Generate an SMBIOS (System Management BIOS) table"
334 default y
e663b350 335 depends on X86 || EFI_LOADER
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336 help
337 The System Management BIOS (SMBIOS) specification addresses how
338 motherboard and system vendors present management information about
339 their products in a standard format by extending the BIOS interface
340 on Intel architecture systems.
341
342 Check http://www.dmtf.org/standards/smbios for details.
343
344config SMBIOS_MANUFACTURER
345 string "SMBIOS Manufacturer"
346 depends on GENERATE_SMBIOS_TABLE
347 default SYS_VENDOR
348 help
349 The board manufacturer to store in SMBIOS structures.
350 Change this to override the default one (CONFIG_SYS_VENDOR).
351
352config SMBIOS_PRODUCT_NAME
353 string "SMBIOS Product Name"
354 depends on GENERATE_SMBIOS_TABLE
355 default SYS_BOARD
356 help
357 The product name to store in SMBIOS structures.
358 Change this to override the default one (CONFIG_SYS_BOARD).
359
360endmenu
361
867a6ac8 362source lib/efi/Kconfig
ed980b8c 363source lib/efi_loader/Kconfig
32ce6179 364source lib/optee/Kconfig
867a6ac8 365
ed36323f 366endmenu
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