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 source lib/dhry/Kconfig
  65
  66 source lib/rsa/Kconfig
  67
  68 config TPM
  69         bool "Trusted Platform Module (TPM) Support"
  70         depends on DM
  71         help
  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.
  78
  79 menu "Hashing Support"
  80
  81 config SHA1
  82         bool "Enable SHA1 support"
  83         help
  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
  87           (digest).
  88
  89 config SHA256
  90         bool "Enable SHA256 support"
  91         help
  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
  95           (digest).
  96
  97 config SHA_HW_ACCEL
  98         bool "Enable hashing using hardware"
  99         help
 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.
 104
 105 config SHA_PROG_HW_ACCEL
 106         bool "Enable Progressive hashing support using hardware"
 107         depends on SHA_HW_ACCEL
 108         help
 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.
 113
 114 config MD5
 115         bool
 116
 117 endmenu
 118
 119 menu "Compression Support"
 120
 121 config LZ4
 122         bool "Enable LZ4 decompression support"
 123         help
 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.
 128
 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.
 134
 135 endmenu
 136
 137 config ERRNO_STR
 138         bool "Enable function for getting errno-related string message"
 139         help
 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
 144
 145 config OF_LIBFDT
 146         bool "Enable the FDT library"
 147         default y if OF_CONTROL
 148         help
 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.
 154
 155 config OF_LIBFDT_OVERLAY
 156         bool "Enable the FDT library overlay support"
 157         help
 158           This enables the FDT library (libfdt) overlay support.
 159
 160 config SPL_OF_LIBFDT
 161         bool "Enable the FDT library for SPL"
 162         default y if SPL_OF_CONTROL
 163         help
 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.
 169
 170 config FDT_FIXUP_PARTITIONS
 171         bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
 172         depends on OF_LIBFDT
 173         default n
 174         help
 175           Allow overwriting defined partitions in the device tree blob
 176           using partition info defined in the 'mtdparts' environment
 177           variable.
 178
 179 menu "System tables"
 180         depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)
 181
 182 config GENERATE_SMBIOS_TABLE
 183         bool "Generate an SMBIOS (System Management BIOS) table"
 184         default y
 185         depends on X86 || EFI_LOADER
 186         help
 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.
 191
 192           Check http://www.dmtf.org/standards/smbios for details.
 193
 194 config SMBIOS_MANUFACTURER
 195         string "SMBIOS Manufacturer"
 196         depends on GENERATE_SMBIOS_TABLE
 197         default SYS_VENDOR
 198         help
 199           The board manufacturer to store in SMBIOS structures.
 200           Change this to override the default one (CONFIG_SYS_VENDOR).
 201
 202 config SMBIOS_PRODUCT_NAME
 203         string "SMBIOS Product Name"
 204         depends on GENERATE_SMBIOS_TABLE
 205         default SYS_BOARD
 206         help
 207           The product name to store in SMBIOS structures.
 208           Change this to override the default one (CONFIG_SYS_BOARD).
 209
 210 endmenu
 211
 212 source lib/efi/Kconfig
 213 source lib/efi_loader/Kconfig
 214
 215 endmenu