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u-boot/lib/Kconfig
Alexandru Gagniuc e60e449931 lib: Drop SHA512_ALGO in lieu of SHA512 
SHA512_ALGO was used as a "either SHA512 or SHA384", although the
implementations of these two algorithms share a majority of code.

From a Kconfig interface perspective, it makes sense to present two
distinct options. This requires #ifdefing out the SHA512
implementation from sha512.c. The latter doesn't make any sense.

It's reasonable to say in Kconfig that SHA384 depends on SHA512, and
seems to be the more polite way to handle the selection.

Thus, automatically select SHA512 when SHA384 is enabled.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2021-09-08 16:11:46 -04:00

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menu "Library routines"
config ADDR_MAP
bool "Enable support for non-identity virtual-physical mappings"
help
Enables helper code for implementing non-identity virtual-physical
memory mappings for 32bit CPUs.
This library only works in the post-relocation phase.
config SYS_NUM_ADDR_MAP
int "Size of the address-map table"
depends on ADDR_MAP
default 16
help
Sets the number of entries in the virtual-physical mapping table.
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 && DM && OF_CONTROL
default y if OF_SEPARATE || OF_EMBED
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 CHARSET
bool
default y if UT_UNICODE || EFI_LOADER || UFS
help
Enables support for various conversions between different
character sets, such as between unicode representations and
different 'code pages'.
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 SSCANF
bool
default n
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 || FAT_WRITE
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 library 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
select TIMER_EARLY
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/ecdsa/Kconfig
source lib/rsa/Kconfig
source lib/crypto/Kconfig
source lib/crypt/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.
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 SHA512
bool "Enable SHA512 support"
help
This option enables support of hashing using SHA512 algorithm.
The hash is calculated in software.
The SHA512 algorithm produces a 512-bit (64-byte) hash value
(digest).
config SHA384
bool "Enable SHA384 support"
select SHA512
help
This option enables support of hashing using SHA384 algorithm.
The hash is calculated in software. This is also selects SHA512,
because these implementations share the bulk of the code..
The SHA384 algorithm produces a 384-bit (48-byte) hash value
(digest).
config SHA_HW_ACCEL
bool "Enable hardware acceleration for SHA hash functions"
help
This option enables hardware acceleration for the SHA1 and SHA256
hashing algorithms. This affects the 'hash' command and also the
hash_lookup_algo() function.
if SHA_HW_ACCEL
config SHA512_HW_ACCEL
bool "Enable hardware acceleration for SHA512"
depends on SHA512
help
This option enables hardware acceleration for the SHA384 and SHA512
hashing algorithms. This affects the 'hash' command and also the
hash_lookup_algo() function.
config SHA_PROG_HW_ACCEL
bool "Enable Progressive hashing support using hardware"
help
This option enables hardware-acceleration for SHA progressive
hashing.
Data can be streamed in a block at a time and the hashing is
performed in hardware.
endif
config MD5
bool "Support MD5 algorithm"
help
This option enables MD5 support. MD5 is an algorithm designed
in 1991 that produces a 16-byte digest (or checksum) from its input
data. It has a number of vulnerabilities which preclude its use in
security applications, but it can be useful for providing a quick
checksum of a block of data.
config SPL_MD5
bool "Support MD5 algorithm in SPL"
help
This option enables MD5 support in SPL. MD5 is an algorithm designed
in 1991 that produces a 16-byte digest (or checksum) from its input
data. It has a number of vulnerabilities which preclude its use in
security applications, but it can be useful for providing a quick
checksum of a block of data.
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_UNCOMPRESS
bool "Enables zlib's uncompress() functionality"
help
This enables an extra zlib functionality: the uncompress() function,
which decompresses data from a buffer into another, knowing their
sizes. Unlike gunzip(), there is no header parsing.
config GZIP_COMPRESSED
bool
select ZLIB
config BZIP2
bool "Enable bzip2 decompression support"
help
This enables support for BZIP2 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 the 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_LZMA
bool "Enable LZMA decompression support for SPL build"
help
This enables support for LZMA compression algorithm for SPL boot.
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 SPL_HEXDUMP
bool "Enable hexdump in SPL"
depends on SPL && HEXDUMP
help
This enables functions for printing dumps of binary data in
SPL.
config GETOPT
bool "Enable getopt"
help
This enables functions for parsing command-line options.
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 BLOBLIST_TABLES
bool "Put tables in a bloblist"
depends on X86 && BLOBLIST
help
Normally tables are placed at address 0xf0000 and can be up to 64KB
long. With this option, tables are instead placed in the bloblist
with a pointer from 0xf0000. The size can then be larger and the
tables can be placed high in memory.
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.
See also SMBIOS_SYSINFO which allows SMBIOS values to be provided in
the devicetree.
config LIB_RATIONAL
bool "enable continued fraction calculation routines"
config SPL_LIB_RATIONAL
bool "enable continued fraction calculation routines for SPL"
depends on SPL
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.
config SMBIOS_PARSER
bool "SMBIOS parser"
help
A simple parser for SMBIOS data.
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
config LIB_ELF
bool
help
Support basic elf loading/validating functions.
This supports for 32 bit and 64 bit versions.
config LMB
bool "Enable the logical memory blocks library (lmb)"
default y if ARC || ARM || M68K || MICROBLAZE || MIPS || NDS32 || \
NIOS2 || PPC || RISCV || SANDBOX || SH || X86 || XTENSA
help
Support the library logical memory blocks.
config LMB_USE_MAX_REGIONS
bool "Use a commun number of memory and reserved regions in lmb lib"
depends on LMB
default y
help
Define the number of supported memory regions in the library logical
memory blocks.
This feature allow to reduce the lmb library size by using compiler
optimization when LMB_MEMORY_REGIONS == LMB_RESERVED_REGIONS.
config LMB_MAX_REGIONS
int "Number of memory and reserved regions in lmb lib"
depends on LMB && LMB_USE_MAX_REGIONS
default 8
help
Define the number of supported regions, memory and reserved, in the
library logical memory blocks.
config LMB_MEMORY_REGIONS
int "Number of memory regions in lmb lib"
depends on LMB && !LMB_USE_MAX_REGIONS
default 8
help
Define the number of supported memory regions in the library logical
memory blocks.
The minimal value is CONFIG_NR_DRAM_BANKS.
config LMB_RESERVED_REGIONS
int "Number of reserved regions in lmb lib"
depends on LMB && !LMB_USE_MAX_REGIONS
default 8
help
Define the number of supported reserved regions in the library logical
memory blocks.
endmenu
config PHANDLE_CHECK_SEQ
bool "Enable phandle check while getting sequence number"
default n
help
When there are multiple device tree nodes with same name,
enable this config option to distinguish them using
phandles in fdtdec_get_alias_seq() function.
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