1 menu "Library routines"
3 config CC_OPTIMIZE_LIBS_FOR_SPEED
4 bool "Optimize libraries for speed"
6 Enabling this option will pass "-O2" to gcc when compiling
11 config HAVE_PRIVATE_LIBGCC
14 config USE_PRIVATE_LIBGCC
15 bool "Use private libgcc"
16 depends on HAVE_PRIVATE_LIBGCC
17 default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
19 This option allows you to use the built-in libgcc implementation
20 of U-Boot instead of the one provided by the compiler.
27 The frequency of the timer returned by get_timer().
28 get_timer() must operate in milliseconds and this option must be
31 config USE_TINY_PRINTF
32 bool "Enable tiny printf() version"
34 This option enables a tiny, stripped down printf version.
35 This should only be used in space limited environments,
36 like SPL versions with hard memory limits. This version
37 reduces the code size by about 2.5KiB on armv7.
39 The supported format specifiers are %c, %s, %u/%d and %x.
42 bool "Enable regular expression support"
45 If this variable is defined, U-Boot is linked against the
46 SLRE (Super Light Regular Expression) library, which adds
47 regex support to some commands, for example "env grep" and
51 bool "Pseudo-random library support "
53 This library provides pseudo-random number generator functions.
55 config SPL_TINY_MEMSET
56 bool "Use a very small memset() in SPL"
58 The faster memset() is the arch-specific one (if available) enabled
59 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
60 better performance by writing a word at a time. But in very
61 size-constrained envrionments even this may be too big. Enable this
62 option to reduce code size slightly at the cost of some speed.
64 config TPL_TINY_MEMSET
65 bool "Use a very small memset() in TPL"
67 The faster memset() is the arch-specific one (if available) enabled
68 by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
69 better performance by writing a word at a time. But in very
70 size-constrained envrionments even this may be too big. Enable this
71 option to reduce code size slightly at the cost of some speed.
76 source lib/dhry/Kconfig
78 menu "Security support"
81 bool "Support the AES algorithm"
83 This provides a means to encrypt and decrypt data using the AES
84 (Advanced Encryption Standard). This algorithm uses a symetric key
85 and is widely used as a streaming cipher. Different key lengths are
86 supported by the algorithm but only a 128-bit key is supported at
89 source lib/rsa/Kconfig
92 bool "Trusted Platform Module (TPM) Support"
95 This enables support for TPMs which can be used to provide security
96 features for your board. The TPM can be connected via LPC or I2C
97 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
98 command to interactive the TPM. Driver model support is provided
99 for the low-level TPM interface, but only one TPM is supported at
100 a time by the TPM library.
104 menu "Hashing Support"
107 bool "Enable SHA1 support"
109 This option enables support of hashing using SHA1 algorithm.
110 The hash is calculated in software.
111 The SHA1 algorithm produces a 160-bit (20-byte) hash value
115 bool "Enable SHA256 support"
117 This option enables support of hashing using SHA256 algorithm.
118 The hash is calculated in software.
119 The SHA256 algorithm produces a 256-bit (32-byte) hash value
123 bool "Enable hashing using hardware"
125 This option enables hardware acceleration
126 for SHA1/SHA256 hashing.
127 This affects the 'hash' command and also the
128 hash_lookup_algo() function.
130 config SHA_PROG_HW_ACCEL
131 bool "Enable Progressive hashing support using hardware"
132 depends on SHA_HW_ACCEL
134 This option enables hardware-acceleration for
135 SHA1/SHA256 progressive hashing.
136 Data can be streamed in a block at a time and the hashing
137 is performed in hardware.
144 menu "Compression Support"
147 bool "Enable LZ4 decompression support"
149 If this option is set, support for LZ4 compressed images
150 is included. The LZ4 algorithm can run in-place as long as the
151 compressed image is loaded to the end of the output buffer, and
152 trades lower compression ratios for much faster decompression.
154 NOTE: This implements the release version of the LZ4 frame
155 format as generated by default by the 'lz4' command line tool.
156 This is not the same as the outdated, less efficient legacy
157 frame format currently (2015) implemented in the Linux kernel
158 (generated by 'lz4 -l'). The two formats are incompatible.
161 bool "Enable LZMA decompression support"
163 This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
164 a dictionary compression algorithm that provides a high compression
165 ratio and fairly fast decompression speed. See also
166 CONFIG_CMD_LZMADEC which provides a decode command.
169 bool "Enable LZO decompression support"
171 This enables support for LZO compression algorithm.r
175 bool "Enable function for getting errno-related string message"
177 The function errno_str(int errno), returns a pointer to the errno
178 corresponding text message:
179 - if errno is null or positive number - a pointer to "Success" message
180 - if errno is negative - a pointer to errno related message
183 bool "Enable the FDT library"
184 default y if OF_CONTROL
186 This enables the FDT library (libfdt). It provides functions for
187 accessing binary device tree images in memory, such as adding and
188 removing nodes and properties, scanning through the tree and finding
189 particular compatible nodes. The library operates on a flattened
190 version of the device tree.
192 config OF_LIBFDT_OVERLAY
193 bool "Enable the FDT library overlay support"
195 This enables the FDT library (libfdt) overlay support.
198 bool "Enable the FDT library for SPL"
199 default y if SPL_OF_CONTROL
201 This enables the FDT library (libfdt). It provides functions for
202 accessing binary device tree images in memory, such as adding and
203 removing nodes and properties, scanning through the tree and finding
204 particular compatible nodes. The library operates on a flattened
205 version of the device tree.
207 config FDT_FIXUP_PARTITIONS
208 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
212 Allow overwriting defined partitions in the device tree blob
213 using partition info defined in the 'mtdparts' environment
217 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
219 config GENERATE_SMBIOS_TABLE
220 bool "Generate an SMBIOS (System Management BIOS) table"
222 depends on X86 || EFI_LOADER
224 The System Management BIOS (SMBIOS) specification addresses how
225 motherboard and system vendors present management information about
226 their products in a standard format by extending the BIOS interface
227 on Intel architecture systems.
229 Check http://www.dmtf.org/standards/smbios for details.
231 config SMBIOS_MANUFACTURER
232 string "SMBIOS Manufacturer"
233 depends on GENERATE_SMBIOS_TABLE
236 The board manufacturer to store in SMBIOS structures.
237 Change this to override the default one (CONFIG_SYS_VENDOR).
239 config SMBIOS_PRODUCT_NAME
240 string "SMBIOS Product Name"
241 depends on GENERATE_SMBIOS_TABLE
244 The product name to store in SMBIOS structures.
245 Change this to override the default one (CONFIG_SYS_BOARD).
249 source lib/efi/Kconfig
250 source lib/efi_loader/Kconfig