lib/Kconfig

   1 menu "Library routines"
   2
   3 config CC_OPTIMIZE_LIBS_FOR_SPEED
   4         bool "Optimize libraries for speed"
   5         help
   6           Enabling this option will pass "-O2" to gcc when compiling
   7           under "lib" directory.
   8
   9           If unsure, say N.
  10
  11 config HAVE_PRIVATE_LIBGCC
  12         bool
  13
  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)
  18         help
  19           This option allows you to use the built-in libgcc implementation
  20           of U-Boot instead of the one provided by the compiler.
  21           If unsure, say N.
  22
  23 config SYS_HZ
  24         int
  25         default 1000
  26         help
  27           The frequency of the timer returned by get_timer().
  28           get_timer() must operate in milliseconds and this option must be
  29           set to 1000.
  30
  31 config USE_TINY_PRINTF
  32         bool "Enable tiny printf() version"
  33         help
  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.
  38
  39           The supported format specifiers are %c, %s, %u/%d and %x.
  40
  41 config REGEX
  42         bool "Enable regular expression support"
  43         default y if NET
  44         help
  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
  48           "setexpr".
  49
  50 config LIB_RAND
  51         bool "Pseudo-random library support "
  52         help
  53           This library provides pseudo-random number generator functions.
  54
  55 config SPL_TINY_MEMSET
  56         bool "Use a very small memset() in SPL"
  57         help
  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.
  63
  64 config RBTREE
  65         bool
  66
  67 source lib/dhry/Kconfig
  68
  69 source lib/rsa/Kconfig
  70
  71 config TPM
  72         bool "Trusted Platform Module (TPM) Support"
  73         depends on DM
  74         help
  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.
  81
  82 menu "Hashing Support"
  83
  84 config SHA1
  85         bool "Enable SHA1 support"
  86         help
  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
  90           (digest).
  91
  92 config SHA256
  93         bool "Enable SHA256 support"
  94         help
  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
  98           (digest).
  99
 100 config SHA_HW_ACCEL
 101         bool "Enable hashing using hardware"
 102         help
 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.
 107
 108 config SHA_PROG_HW_ACCEL
 109         bool "Enable Progressive hashing support using hardware"
 110         depends on SHA_HW_ACCEL
 111         help
 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.
 116
 117 config MD5
 118         bool
 119
 120 endmenu
 121
 122 menu "Compression Support"
 123
 124 config LZ4
 125         bool "Enable LZ4 decompression support"
 126         help
 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.
 131
 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.
 137
 138 config LZO
 139         bool
 140 endmenu
 141
 142 config ERRNO_STR
 143         bool "Enable function for getting errno-related string message"
 144         help
 145           The function errno_str(int errno), returns a pointer to the errno
 146           corresponding text message:
 147           - if errno is null or positive number - a pointer to "Success" message
 148           - if errno is negative - a pointer to errno related message
 149
 150 config OF_LIBFDT
 151         bool "Enable the FDT library"
 152         default y if OF_CONTROL
 153         help
 154           This enables the FDT library (libfdt). It provides functions for
 155           accessing binary device tree images in memory, such as adding and
 156           removing notes and properties, scanning through the tree and finding
 157           particular compatible nodes. The library operates on a flattened
 158           version of the device tree.
 159
 160 config OF_LIBFDT_OVERLAY
 161         bool "Enable the FDT library overlay support"
 162         help
 163           This enables the FDT library (libfdt) overlay support.
 164
 165 config SPL_OF_LIBFDT
 166         bool "Enable the FDT library for SPL"
 167         default y if SPL_OF_CONTROL
 168         help
 169           This enables the FDT library (libfdt). It provides functions for
 170           accessing binary device tree images in memory, such as adding and
 171           removing notes and properties, scanning through the tree and finding
 172           particular compatible nodes. The library operates on a flattened
 173           version of the device tree.
 174
 175 config FDT_FIXUP_PARTITIONS
 176         bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
 177         depends on OF_LIBFDT
 178         default n
 179         help
 180           Allow overwriting defined partitions in the device tree blob
 181           using partition info defined in the 'mtdparts' environment
 182           variable.
 183
 184 menu "System tables"
 185         depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
 186
 187 config GENERATE_SMBIOS_TABLE
 188         bool "Generate an SMBIOS (System Management BIOS) table"
 189         default y
 190         depends on X86 || EFI_LOADER
 191         help
 192           The System Management BIOS (SMBIOS) specification addresses how
 193           motherboard and system vendors present management information about
 194           their products in a standard format by extending the BIOS interface
 195           on Intel architecture systems.
 196
 197           Check http://www.dmtf.org/standards/smbios for details.
 198
 199 config SMBIOS_MANUFACTURER
 200         string "SMBIOS Manufacturer"
 201         depends on GENERATE_SMBIOS_TABLE
 202         default SYS_VENDOR
 203         help
 204           The board manufacturer to store in SMBIOS structures.
 205           Change this to override the default one (CONFIG_SYS_VENDOR).
 206
 207 config SMBIOS_PRODUCT_NAME
 208         string "SMBIOS Product Name"
 209         depends on GENERATE_SMBIOS_TABLE
 210         default SYS_BOARD
 211         help
 212           The product name to store in SMBIOS structures.
 213           Change this to override the default one (CONFIG_SYS_BOARD).
 214
 215 endmenu
 216
 217 source lib/efi/Kconfig
 218 source lib/efi_loader/Kconfig
 219
 220 endmenu