menu "Library routines"

  config BCH
  	bool "Enable Software based BCH ECC"
  	help
  	  Enables software based BCH ECC algorithm present in lib/bch.c
  	  This is used by SoC platforms which do not have built-in ELM
  	  hardware engine required for BCH ECC correction.

  config BINMAN_FDT
  	bool "Allow access to binman information in the device tree"
  	depends on BINMAN && OF_CONTROL
  	default y
  	help
  	  This enables U-Boot to access information about binman entries,
  	  stored in the device tree in a binman node. Typical uses are to
  	  locate entries in the firmware image. See binman.h for the available
  	  functionality.

  config CC_OPTIMIZE_LIBS_FOR_SPEED
  	bool "Optimize libraries for speed"
  	help
  	  Enabling this option will pass "-O2" to gcc when compiling
  	  under "lib" directory.
  
  	  If unsure, say N.

  config DYNAMIC_CRC_TABLE
  	bool "Enable Dynamic tables for CRC"
  	help
  	  Enable this option to calculate entries for CRC tables at runtime.
  	  This can be helpful when reducing the size of the build image

  config HAVE_ARCH_IOMAP
  	bool
  	help
  	  Enable this option if architecture provides io{read,write}{8,16,32}
  	  I/O accessor functions.

  config HAVE_PRIVATE_LIBGCC
  	bool

  config LIB_UUID
  	bool

  config PRINTF
  	bool
  	default y
  
  config SPL_PRINTF
  	bool
  	select SPL_SPRINTF

  	select SPL_STRTO if !SPL_USE_TINY_PRINTF

  
  config TPL_PRINTF
  	bool
  	select TPL_SPRINTF

  	select TPL_STRTO if !TPL_USE_TINY_PRINTF

  
  config SPRINTF
  	bool
  	default y
  
  config SPL_SPRINTF
  	bool
  
  config TPL_SPRINTF
  	bool
  
  config STRTO
  	bool
  	default y
  
  config SPL_STRTO
  	bool
  
  config TPL_STRTO
  	bool

  config IMAGE_SPARSE
  	bool
  
  config IMAGE_SPARSE_FILLBUF_SIZE
  	hex "Android sparse image CHUNK_TYPE_FILL buffer size"
  	default 0x80000
  	depends on IMAGE_SPARSE
  	help
  	  Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
  	  chunks.

  config USE_PRIVATE_LIBGCC
  	bool "Use private libgcc"
  	depends on HAVE_PRIVATE_LIBGCC

  	default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)

  	help
  	  This option allows you to use the built-in libgcc implementation

  	  of U-Boot instead of the one provided by the compiler.

  	  If unsure, say N.

  config SYS_HZ
  	int
  	default 1000
  	help
  	  The frequency of the timer returned by get_timer().
  	  get_timer() must operate in milliseconds and this option must be
  	  set to 1000.

  config SPL_USE_TINY_PRINTF

  	bool "Enable tiny printf() version in SPL"

  	depends on SPL

  	default y

  	help
  	  This option enables a tiny, stripped down printf version.
  	  This should only be used in space limited environments,
  	  like SPL versions with hard memory limits. This version
  	  reduces the code size by about 2.5KiB on armv7.
  
  	  The supported format specifiers are %c, %s, %u/%d and %x.

  config TPL_USE_TINY_PRINTF

  	bool "Enable tiny printf() version in TPL"

  	depends on TPL
  	default y if SPL_USE_TINY_PRINTF
  	help
  	  This option enables a tiny, stripped down printf version.
  	  This should only be used in space limited environments,
  	  like SPL versions with hard memory limits. This version
  	  reduces the code size by about 2.5KiB on armv7.
  
  	  The supported format specifiers are %c, %s, %u/%d and %x.

  config PANIC_HANG
  	bool "Do not reset the system on fatal error"
  	help
  	  Define this option to stop the system in case of a fatal error,
  	  so that you have to reset it manually. This is probably NOT a good
  	  idea for an embedded system where you want the system to reboot
  	  automatically as fast as possible, but it may be useful during
  	  development since you can try to debug the conditions that lead to
  	  the situation.

  config REGEX
  	bool "Enable regular expression support"

  	default y if NET

  	help
  	  If this variable is defined, U-Boot is linked against the
  	  SLRE (Super Light Regular Expression) library, which adds
  	  regex support to some commands, for example "env grep" and
  	  "setexpr".

  choice
  	prompt "Pseudo-random library support type"

  	depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID || \
  		   RNG_SANDBOX || UT_LIB && AES

  	default LIB_RAND

  	help

  	  Select the library to provide pseudo-random number generator
  	  functions.  LIB_HW_RAND supports certain hardware engines that
  	  provide this functionality.  If in doubt, select LIB_RAND.
  
  config LIB_RAND
  	bool "Pseudo-random library support"
  
  config LIB_HW_RAND
  	bool "HW Engine for random libray support"
  
  endchoice

  config SPL_TINY_MEMSET
  	bool "Use a very small memset() in SPL"
  	help
  	  The faster memset() is the arch-specific one (if available) enabled
  	  by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
  	  better performance by writing a word at a time. But in very

  	  size-constrained environments even this may be too big. Enable this

  	  option to reduce code size slightly at the cost of some speed.

  config TPL_TINY_MEMSET
  	bool "Use a very small memset() in TPL"
  	help
  	  The faster memset() is the arch-specific one (if available) enabled
  	  by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
  	  better performance by writing a word at a time. But in very

  	  size-constrained environments even this may be too big. Enable this

  	  option to reduce code size slightly at the cost of some speed.

  config RBTREE
  	bool

  config BITREVERSE
  	bool "Bit reverse library from Linux"

  config TRACE
  	bool "Support for tracing of function calls and timing"
  	imply CMD_TRACE
  	help
  	  Enables function tracing within U-Boot. This allows recording of call
  	  traces including timing information. The command can write data to
  	  memory for exporting for analysis (e.g. using bootchart).
  	  See doc/README.trace for full details.

  config TRACE_BUFFER_SIZE
  	hex "Size of trace buffer in U-Boot"
  	depends on TRACE
  	default 0x01000000
  	help
  	  Sets the size of the trace buffer in U-Boot. This is allocated from
  	  memory during relocation. If this buffer is too small, the trace
  	  history will be truncated, with later records omitted.
  
  	  If early trace is enabled (i.e. before relocation), this buffer must
  	  be large enough to include all the data from the early trace buffer as
  	  well, since this is copied over to the main buffer during relocation.
  
  	  A trace record is emitted for each function call and each record is
  	  12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
  	  the size is too small then 'trace stats' will show a message saying
  	  how many records were dropped due to buffer overflow.

  config TRACE_CALL_DEPTH_LIMIT
  	int "Trace call depth limit"
  	depends on TRACE
  	default 15
  	help
  	  Sets the maximum call depth up to which function calls are recorded.

  config TRACE_EARLY
  	bool "Enable tracing before relocation"
  	depends on TRACE
  	help
  	  Sometimes it is helpful to trace execution of U-Boot before
  	  relocation. This is possible by using a arch-specific, fixed buffer
  	  position in memory. Enable this option to start tracing as early as
  	  possible after U-Boot starts.
  
  config TRACE_EARLY_SIZE
  	hex "Size of early trace buffer in U-Boot"
  	depends on TRACE_EARLY
  	default 0x00100000
  	help
  	  Sets the size of the early trace buffer in bytes. This is used to hold
  	  tracing information before relocation.

  config TRACE_EARLY_CALL_DEPTH_LIMIT
  	int "Early trace call depth limit"
  	depends on TRACE_EARLY
  	default 200
  	help
  	  Sets the maximum call depth up to which function calls are recorded
  	  during early tracing.

  config TRACE_EARLY_ADDR
  	hex "Address of early trace buffer in U-Boot"
  	depends on TRACE_EARLY
  	default 0x00100000
  	help
  	  Sets the address of the early trace buffer in U-Boot. This memory
  	  must be accessible before relocation.
  
  	  A trace record is emitted for each function call and each record is
  	  12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
  	  the size is too small then the message which says the amount of early
  	  data being coped will the the same as the

  source lib/dhry/Kconfig

  menu "Security support"
  
  config AES
  	bool "Support the AES algorithm"
  	help
  	  This provides a means to encrypt and decrypt data using the AES
  	  (Advanced Encryption Standard). This algorithm uses a symetric key
  	  and is widely used as a streaming cipher. Different key lengths are
  	  supported by the algorithm but only a 128-bit key is supported at
  	  present.

  source lib/rsa/Kconfig

  source lib/crypto/Kconfig

  config TPM
  	bool "Trusted Platform Module (TPM) Support"

  	depends on DM

  	help
  	  This enables support for TPMs which can be used to provide security
  	  features for your board. The TPM can be connected via LPC or I2C
  	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
  	  command to interactive the TPM. Driver model support is provided
  	  for the low-level TPM interface, but only one TPM is supported at
  	  a time by the TPM library.

  config SPL_TPM
  	bool "Trusted Platform Module (TPM) Support in SPL"
  	depends on SPL_DM
  	help
  	  This enables support for TPMs which can be used to provide security
  	  features for your board. The TPM can be connected via LPC or I2C
  	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
  	  command to interactive the TPM. Driver model support is provided
  	  for the low-level TPM interface, but only one TPM is supported at
  	  a time by the TPM library.
  
  config TPL_TPM
  	bool "Trusted Platform Module (TPM) Support in TPL"
  	depends on TPL_DM
  	help
  	  This enables support for TPMs which can be used to provide security
  	  features for your board. The TPM can be connected via LPC or I2C
  	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
  	  command to interactive the TPM. Driver model support is provided
  	  for the low-level TPM interface, but only one TPM is supported at
  	  a time by the TPM library.

  endmenu

  menu "Android Verified Boot"
  
  config LIBAVB
  	bool "Android Verified Boot 2.0 support"
  	depends on ANDROID_BOOT_IMAGE
  	default n
  	help
  	  This enables support of Android Verified Boot 2.0 which can be used
  	  to assure the end user of the integrity of the software running on a
  	  device. Introduces such features as boot chain of trust, rollback
  	  protection etc.

  config AVB_SUPPORT
  	bool "Enable Android AVB lib support"
  	select LIBAVB
  
  config AVB_ATX
  	bool "Enable AVB_ATX support"
  	depends on AVB_SUPPORT

  config AVB_WARNING_LOGO
  	bool "Enable avb warning show logo on screen"
  	help
  	  Enable avb warning show logo on screen
  
  config AVB_WARNING_LOGO_COLS
  	hex "x resolution on the screen"
  	default 0x1E0
  	depends on AVB_WARNING_LOGO
  	help
  	  The x resolution on the screen.
  
  config AVB_WARNING_LOGO_ROWS
  	hex "y resolution on the screen"
  	default 0x60
  	depends on AVB_WARNING_LOGO
  	help
  	  The y resolution on the screen.
  
  config AVB_WARNING_TIME_LAST
  	hex "the time of avb warning logo will last"
  	default 0x3
  	help
  	  The time of avb warning logo will last (s).

  config BOOTLOADER_MENU
  	bool "Enable bootloader menu for android device"
  	help
  	  bootloader menu feature for android device.

  config APPEND_BOOTARGS
  	bool "Append bootargs support"
  
  config DUAL_BOOTLOADER
  	bool "Enable dual bootloader support"
  	help
  	  Enable A/B bootloader select in SPL.
  
  config AT_AUTHENTICATE_UNLOCK
  	bool "Enable authenticate unlock for Android Things devices"

  config SECURE_UNLOCK
  	bool "Enable secure unlock for Android devices, it can only be enabled on HAB closed board"

  
  config TRUSTY_UNLOCK_PERMISSION
  	bool "Support unlock permission protection in trusty"
  	depends on IMX_TRUSTY_OS

  endmenu

  menu "Hashing Support"
  
  config SHA1
  	bool "Enable SHA1 support"
  	help
  	  This option enables support of hashing using SHA1 algorithm.
  	  The hash is calculated in software.
  	  The SHA1 algorithm produces a 160-bit (20-byte) hash value
  	  (digest).
  
  config SHA256
  	bool "Enable SHA256 support"
  	help
  	  This option enables support of hashing using SHA256 algorithm.
  	  The hash is calculated in software.
  	  The SHA256 algorithm produces a 256-bit (32-byte) hash value
  	  (digest).
  
  config SHA_HW_ACCEL
  	bool "Enable hashing using hardware"
  	help
  	  This option enables hardware acceleration
  	  for SHA1/SHA256 hashing.
  	  This affects the 'hash' command and also the
  	  hash_lookup_algo() function.
  
  config SHA_PROG_HW_ACCEL
  	bool "Enable Progressive hashing support using hardware"
  	depends on SHA_HW_ACCEL
  	help
  	  This option enables hardware-acceleration for
  	  SHA1/SHA256 progressive hashing.
  	  Data can be streamed in a block at a time and the hashing
  	  is performed in hardware.

  
  config MD5
  	bool

  config CRC32C
  	bool

  config XXHASH
  	bool

  endmenu

  menu "Compression Support"
  
  config LZ4
  	bool "Enable LZ4 decompression support"
  	help
  	  If this option is set, support for LZ4 compressed images
  	  is included. The LZ4 algorithm can run in-place as long as the
  	  compressed image is loaded to the end of the output buffer, and
  	  trades lower compression ratios for much faster decompression.

  	  NOTE: This implements the release version of the LZ4 frame
  	  format as generated by default by the 'lz4' command line tool.
  	  This is not the same as the outdated, less efficient legacy
  	  frame format currently (2015) implemented in the Linux kernel
  	  (generated by 'lz4 -l'). The two formats are incompatible.

  config LZMA
  	bool "Enable LZMA decompression support"
  	help
  	  This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
  	  a dictionary compression algorithm that provides a high compression
  	  ratio and fairly fast decompression speed. See also
  	  CONFIG_CMD_LZMADEC which provides a decode command.

  config LZO

  	bool "Enable LZO decompression support"
  	help
  	  This enables support for LZO compression algorithm.r

  config GZIP

  	bool "Enable gzip decompression support"

  	select ZLIB
  	default y
  	help
  	  This enables support for GZIP compression algorithm.
  
  config ZLIB
  	bool
  	default y
  	help
  	  This enables ZLIB compression lib.

  config ZSTD
  	bool "Enable Zstandard decompression support"
  	select XXHASH
  	help
  	  This enables Zstandard decompression library.

  config SPL_LZ4
  	bool "Enable LZ4 decompression support in SPL"
  	help
  	  This enables support for tge LZ4 decompression algorithm in SPL. LZ4
  	  is a lossless data compression algorithm that is focused on
  	  fast compression and decompression speed. It belongs to the LZ77
  	  family of byte-oriented compression schemes.

  config SPL_LZO
  	bool "Enable LZO decompression support in SPL"
  	help
  	  This enables support for LZO compression algorithm in the SPL.

  config SPL_GZIP
  	bool "Enable gzip decompression support for SPL build"
  	select SPL_ZLIB
  	help
  	  This enables support for GZIP compression altorithm for SPL boot.
  
  config SPL_ZLIB
  	bool
  	help
  	  This enables compression lib for SPL boot.

  config SPL_ZSTD
  	bool "Enable Zstandard decompression support in SPL"
  	select XXHASH
  	help
  	  This enables Zstandard decompression library in the SPL.

  endmenu

  config ERRNO_STR
  	bool "Enable function for getting errno-related string message"
  	help
  	  The function errno_str(int errno), returns a pointer to the errno
  	  corresponding text message:
  	  - if errno is null or positive number - a pointer to "Success" message
  	  - if errno is negative - a pointer to errno related message

  config HEXDUMP
  	bool "Enable hexdump"
  	help
  	  This enables functions for printing dumps of binary data.

  config OF_LIBFDT
  	bool "Enable the FDT library"
  	default y if OF_CONTROL
  	help
  	  This enables the FDT library (libfdt). It provides functions for
  	  accessing binary device tree images in memory, such as adding and

  	  removing nodes and properties, scanning through the tree and finding

  	  particular compatible nodes. The library operates on a flattened
  	  version of the device tree.

  config OF_LIBFDT_ASSUME_MASK
  	hex "Mask of conditions to assume for libfdt"
  	depends on OF_LIBFDT || FIT
  	default 0
  	help
  	  Use this to change the assumptions made by libfdt about the
  	  device tree it is working with. A value of 0 means that no assumptions
  	  are made, and libfdt is able to deal with malicious data. A value of
  	  0xff means all assumptions are made and any invalid data may cause
  	  unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h

  config OF_LIBFDT_OVERLAY
  	bool "Enable the FDT library overlay support"

  	depends on OF_LIBFDT

  	default y if ARCH_OMAP2PLUS || ARCH_KEYSTONE

  	help
  	  This enables the FDT library (libfdt) overlay support.

  config SPL_OF_LIBFDT
  	bool "Enable the FDT library for SPL"
  	default y if SPL_OF_CONTROL
  	help
  	  This enables the FDT library (libfdt). It provides functions for
  	  accessing binary device tree images in memory, such as adding and

  	  removing nodes and properties, scanning through the tree and finding

  	  particular compatible nodes. The library operates on a flattened
  	  version of the device tree.

  config SPL_OF_LIBFDT_ASSUME_MASK
  	hex "Mask of conditions to assume for libfdt"
  	depends on SPL_OF_LIBFDT || FIT
  	default 0xff
  	help
  	  Use this to change the assumptions made by libfdt in SPL about the
  	  device tree it is working with. A value of 0 means that no assumptions
  	  are made, and libfdt is able to deal with malicious data. A value of
  	  0xff means all assumptions are made and any invalid data may cause
  	  unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h

  config TPL_OF_LIBFDT
  	bool "Enable the FDT library for TPL"
  	default y if TPL_OF_CONTROL
  	help
  	  This enables the FDT library (libfdt). It provides functions for
  	  accessing binary device tree images in memory, such as adding and
  	  removing nodes and properties, scanning through the tree and finding
  	  particular compatible nodes. The library operates on a flattened
  	  version of the device tree.

  config TPL_OF_LIBFDT_ASSUME_MASK
  	hex "Mask of conditions to assume for libfdt"
  	depends on TPL_OF_LIBFDT || FIT
  	default 0xff
  	help
  	  Use this to change the assumptions made by libfdt in TPL about the
  	  device tree it is working with. A value of 0 means that no assumptions
  	  are made, and libfdt is able to deal with malicious data. A value of
  	  0xff means all assumptions are made and any invalid data may cause
  	  unsafe execution. See FDT_ASSUME_PERFECT, etc. in libfdt_internal.h

  config FDT_FIXUP_PARTITIONS
  	bool "overwrite MTD partitions in DTS through defined in 'mtdparts'"
  	depends on OF_LIBFDT

  	depends on CMD_MTDPARTS

  	help
  	  Allow overwriting defined partitions in the device tree blob
  	  using partition info defined in the 'mtdparts' environment
  	  variable.

  menu "System tables"

  	depends on (!EFI && !SYS_COREBOOT) || (ARM && EFI_LOADER)

  
  config GENERATE_SMBIOS_TABLE
  	bool "Generate an SMBIOS (System Management BIOS) table"
  	default y

  	depends on X86 || EFI_LOADER

  	help
  	  The System Management BIOS (SMBIOS) specification addresses how
  	  motherboard and system vendors present management information about
  	  their products in a standard format by extending the BIOS interface
  	  on Intel architecture systems.
  
  	  Check http://www.dmtf.org/standards/smbios for details.
  
  config SMBIOS_MANUFACTURER
  	string "SMBIOS Manufacturer"
  	depends on GENERATE_SMBIOS_TABLE
  	default SYS_VENDOR
  	help
  	  The board manufacturer to store in SMBIOS structures.
  	  Change this to override the default one (CONFIG_SYS_VENDOR).
  
  config SMBIOS_PRODUCT_NAME
  	string "SMBIOS Product Name"
  	depends on GENERATE_SMBIOS_TABLE
  	default SYS_BOARD
  	help
  	  The product name to store in SMBIOS structures.
  	  Change this to override the default one (CONFIG_SYS_BOARD).
  
  endmenu

  config ASN1_COMPILER
  	bool

  config ASN1_DECODER
  	bool
  	help
  	  Enable asn1 decoder library.

  config OID_REGISTRY
  	bool
  	help
  	  Enable fast lookup object identifier registry.

  source lib/efi/Kconfig

  source lib/efi_loader/Kconfig

  source lib/optee/Kconfig

  config TEST_FDTDEC
  	bool "enable fdtdec test"
  	depends on OF_LIBFDT

  config LIB_DATE
  	bool

  endmenu