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.
67 source lib/dhry/Kconfig
69 source lib/rsa/Kconfig
72 bool "Trusted Platform Module (TPM) Support"
75 This enables support for TPMs which can be used to provide security
76 features for your board. The TPM can be connected via LPC or I2C
77 and a sandbox TPM is provided for testing purposes. Use the 'tpm'
78 command to interactive the TPM. Driver model support is provided
79 for the low-level TPM interface, but only one TPM is supported at
80 a time by the TPM library.
82 menu "Hashing Support"
85 bool "Enable SHA1 support"
87 This option enables support of hashing using SHA1 algorithm.
88 The hash is calculated in software.
89 The SHA1 algorithm produces a 160-bit (20-byte) hash value
93 bool "Enable SHA256 support"
95 This option enables support of hashing using SHA256 algorithm.
96 The hash is calculated in software.
97 The SHA256 algorithm produces a 256-bit (32-byte) hash value
101 bool "Enable hashing using hardware"
103 This option enables hardware acceleration
104 for SHA1/SHA256 hashing.
105 This affects the 'hash' command and also the
106 hash_lookup_algo() function.
108 config SHA_PROG_HW_ACCEL
109 bool "Enable Progressive hashing support using hardware"
110 depends on SHA_HW_ACCEL
112 This option enables hardware-acceleration for
113 SHA1/SHA256 progressive hashing.
114 Data can be streamed in a block at a time and the hashing
115 is performed in hardware.
122 menu "Compression Support"
125 bool "Enable LZ4 decompression support"
127 If this option is set, support for LZ4 compressed images
128 is included. The LZ4 algorithm can run in-place as long as the
129 compressed image is loaded to the end of the output buffer, and
130 trades lower compression ratios for much faster decompression.
132 NOTE: This implements the release version of the LZ4 frame
133 format as generated by default by the 'lz4' command line tool.
134 This is not the same as the outdated, less efficient legacy
135 frame format currently (2015) implemented in the Linux kernel
136 (generated by 'lz4 -l'). The two formats are incompatible.
141 bool "Enable function for getting errno-related string message"
143 The function errno_str(int errno), returns a pointer to the errno
144 corresponding text message:
145 - if errno is null or positive number - a pointer to "Success" message
146 - if errno is negative - a pointer to errno related message
149 bool "Enable the FDT library"
150 default y if OF_CONTROL
152 This enables the FDT library (libfdt). It provides functions for
153 accessing binary device tree images in memory, such as adding and
154 removing notes and properties, scanning through the tree and finding
155 particular compatible nodes. The library operates on a flattened
156 version of the device tree.
158 config OF_LIBFDT_OVERLAY
159 bool "Enable the FDT library overlay support"
161 This enables the FDT library (libfdt) overlay support.
164 bool "Enable the FDT library for SPL"
165 default y if SPL_OF_CONTROL
167 This enables the FDT library (libfdt). It provides functions for
168 accessing binary device tree images in memory, such as adding and
169 removing notes and properties, scanning through the tree and finding
170 particular compatible nodes. The library operates on a flattened
171 version of the device tree.
173 config FDT_FIXUP_PARTITIONS
174 bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
178 Allow overwriting defined partitions in the device tree blob
179 using partition info defined in the 'mtdparts' environment
183 depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
185 config GENERATE_SMBIOS_TABLE
186 bool "Generate an SMBIOS (System Management BIOS) table"
188 depends on X86 || EFI_LOADER
190 The System Management BIOS (SMBIOS) specification addresses how
191 motherboard and system vendors present management information about
192 their products in a standard format by extending the BIOS interface
193 on Intel architecture systems.
195 Check http://www.dmtf.org/standards/smbios for details.
197 config SMBIOS_MANUFACTURER
198 string "SMBIOS Manufacturer"
199 depends on GENERATE_SMBIOS_TABLE
202 The board manufacturer to store in SMBIOS structures.
203 Change this to override the default one (CONFIG_SYS_VENDOR).
205 config SMBIOS_PRODUCT_NAME
206 string "SMBIOS Product Name"
207 depends on GENERATE_SMBIOS_TABLE
210 The product name to store in SMBIOS structures.
211 Change this to override the default one (CONFIG_SYS_BOARD).
215 source lib/efi/Kconfig
216 source lib/efi_loader/Kconfig