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131 This is not the same as the outdated, less efficient legacy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