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 HAVE_PRIVATE_LIBGCC
21 config USE_PRIVATE_LIBGCC
22 bool "Use private libgcc"
23 depends on HAVE_PRIVATE_LIBGCC
24 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
26 This option allows you to use the built-in libgcc implementation
27 of U-Boot instead of the one provided by the compiler.
34 The frequency of the timer returned by get_timer().
35 get_timer() must operate in milliseconds and this option must be
38 config USE_TINY_PRINTF
39 bool "Enable tiny printf() version"
41 This option enables a tiny, stripped down printf version.
42 This should only be used in space limited environments,
43 like SPL versions with hard memory limits. This version
44 reduces the code size by about 2.5KiB on armv7.
46 The supported format specifiers are %c, %s, %u/%d and %x.
49 bool "Enable regular expression support"
52 If this variable is defined, U-Boot is linked against the
53 SLRE (Super Light Regular Expression) library, which adds
54 regex support to some commands, for example "env grep" and
58 bool "Pseudo-random library support "
60 This library provides pseudo-random number generator functions.
62 config SPL_TINY_MEMSET
63 bool "Use a very small memset() in SPL"
65 The faster memset() is the arch-specific one (if available) enabled
66 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
67 better performance by writing a word at a time. But in very
68 size-constrained envrionments even this may be too big. Enable this
69 option to reduce code size slightly at the cost of some speed.
71 config TPL_TINY_MEMSET
72 bool "Use a very small memset() in TPL"
74 The faster memset() is the arch-specific one (if available) enabled
75 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
76 better performance by writing a word at a time. But in very
77 size-constrained envrionments even this may be too big. Enable this
78 option to reduce code size slightly at the cost of some speed.
84 bool "Bit reverse library from Linux"
86 source lib/dhry/Kconfig
88 menu "Security support"
91 bool "Support the AES algorithm"
93 This provides a means to encrypt and decrypt data using the AES
94 (Advanced Encryption Standard). This algorithm uses a symetric key
95 and is widely used as a streaming cipher. Different key lengths are
96 supported by the algorithm but only a 128-bit key is supported at
99 source lib/rsa/Kconfig
102 bool "Trusted Platform Module (TPM) Support"
105 This enables support for TPMs which can be used to provide security
106 features for your board. The TPM can be connected via LPC or I2C
107 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
108 command to interactive the TPM. Driver model support is provided
109 for the low-level TPM interface, but only one TPM is supported at
110 a time by the TPM library.
114 menu "Hashing Support"
117 bool "Enable SHA1 support"
119 This option enables support of hashing using SHA1 algorithm.
120 The hash is calculated in software.
121 The SHA1 algorithm produces a 160-bit (20-byte) hash value
125 bool "Enable SHA256 support"
127 This option enables support of hashing using SHA256 algorithm.
128 The hash is calculated in software.
129 The SHA256 algorithm produces a 256-bit (32-byte) hash value
133 bool "Enable hashing using hardware"
135 This option enables hardware acceleration
136 for SHA1/SHA256 hashing.
137 This affects the 'hash' command and also the
138 hash_lookup_algo() function.
140 config SHA_PROG_HW_ACCEL
141 bool "Enable Progressive hashing support using hardware"
142 depends on SHA_HW_ACCEL
144 This option enables hardware-acceleration for
145 SHA1/SHA256 progressive hashing.
146 Data can be streamed in a block at a time and the hashing
147 is performed in hardware.
157 menu "Compression Support"
160 bool "Enable LZ4 decompression support"
162 If this option is set, support for LZ4 compressed images
163 is included. The LZ4 algorithm can run in-place as long as the
164 compressed image is loaded to the end of the output buffer, and
165 trades lower compression ratios for much faster decompression.
167 NOTE: This implements the release version of the LZ4 frame
168 format as generated by default by the 'lz4' command line tool.
169 This is not the same as the outdated, less efficient legacy
170 frame format currently (2015) implemented in the Linux kernel
171 (generated by 'lz4 -l'). The two formats are incompatible.
174 bool "Enable LZMA decompression support"
176 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
177 a dictionary compression algorithm that provides a high compression
178 ratio and fairly fast decompression speed. See also
179 CONFIG_CMD_LZMADEC which provides a decode command.
182 bool "Enable LZO decompression support"
184 This enables support for LZO compression algorithm.r
187 bool "Enable LZO decompression support in SPL"
189 This enables support for LZO compression algorithm in the SPL.
192 bool "Enable gzip decompression support for SPL build"
195 This enables support for GZIP compression altorithm for SPL boot.
200 This enables compression lib for SPL boot.
205 bool "Enable function for getting errno-related string message"
207 The function errno_str(int errno), returns a pointer to the errno
208 corresponding text message:
209 - if errno is null or positive number - a pointer to "Success" message
210 - if errno is negative - a pointer to errno related message
213 bool "Enable the FDT library"
214 default y if OF_CONTROL
216 This enables the FDT library (libfdt). It provides functions for
217 accessing binary device tree images in memory, such as adding and
218 removing nodes and properties, scanning through the tree and finding
219 particular compatible nodes. The library operates on a flattened
220 version of the device tree.
222 config OF_LIBFDT_OVERLAY
223 bool "Enable the FDT library overlay support"
225 This enables the FDT library (libfdt) overlay support.
228 bool "Enable the FDT library for SPL"
229 default y if SPL_OF_CONTROL
231 This enables the FDT library (libfdt). It provides functions for
232 accessing binary device tree images in memory, such as adding and
233 removing nodes and properties, scanning through the tree and finding
234 particular compatible nodes. The library operates on a flattened
235 version of the device tree.
237 config FDT_FIXUP_PARTITIONS
238 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
242 Allow overwriting defined partitions in the device tree blob
243 using partition info defined in the 'mtdparts' environment
247 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
249 config GENERATE_SMBIOS_TABLE
250 bool "Generate an SMBIOS (System Management BIOS) table"
252 depends on X86 || EFI_LOADER
254 The System Management BIOS (SMBIOS) specification addresses how
255 motherboard and system vendors present management information about
256 their products in a standard format by extending the BIOS interface
257 on Intel architecture systems.
259 Check http://www.dmtf.org/standards/smbios for details.
261 config SMBIOS_MANUFACTURER
262 string "SMBIOS Manufacturer"
263 depends on GENERATE_SMBIOS_TABLE
266 The board manufacturer to store in SMBIOS structures.
267 Change this to override the default one (CONFIG_SYS_VENDOR).
269 config SMBIOS_PRODUCT_NAME
270 string "SMBIOS Product Name"
271 depends on GENERATE_SMBIOS_TABLE
274 The product name to store in SMBIOS structures.
275 Change this to override the default one (CONFIG_SYS_BOARD).
279 source lib/efi/Kconfig
280 source lib/efi_loader/Kconfig