688 lines
20 KiB
Plaintext
688 lines
20 KiB
Plaintext
menu "Library routines"
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config ADDR_MAP
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bool "Enable support for non-identity virtual-physical mappings"
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help
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Enables helper code for implementing non-identity virtual-physical
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memory mappings for 32bit CPUs.
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config SYS_NUM_ADDR_MAP
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int "Size of the address-map table"
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depends on ADDR_MAP
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default 16
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help
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Sets the number of entries in the virtual-physical mapping table.
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config BCH
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bool "Enable Software based BCH ECC"
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help
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Enables software based BCH ECC algorithm present in lib/bch.c
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This is used by SoC platforms which do not have built-in ELM
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hardware engine required for BCH ECC correction.
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config BINMAN_FDT
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bool "Allow access to binman information in the device tree"
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depends on BINMAN && OF_CONTROL
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default y
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help
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This enables U-Boot to access information about binman entries,
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stored in the device tree in a binman node. Typical uses are to
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locate entries in the firmware image. See binman.h for the available
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functionality.
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config CC_OPTIMIZE_LIBS_FOR_SPEED
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bool "Optimize libraries for speed"
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help
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Enabling this option will pass "-O2" to gcc when compiling
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under "lib" directory.
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If unsure, say N.
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config DYNAMIC_CRC_TABLE
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bool "Enable Dynamic tables for CRC"
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help
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Enable this option to calculate entries for CRC tables at runtime.
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This can be helpful when reducing the size of the build image
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config HAVE_ARCH_IOMAP
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bool
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help
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Enable this option if architecture provides io{read,write}{8,16,32}
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I/O accessor functions.
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config HAVE_PRIVATE_LIBGCC
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bool
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config LIB_UUID
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bool
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config PRINTF
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bool
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default y
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config SPL_PRINTF
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bool
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select SPL_SPRINTF
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select SPL_STRTO if !SPL_USE_TINY_PRINTF
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config TPL_PRINTF
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bool
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select TPL_SPRINTF
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select TPL_STRTO if !TPL_USE_TINY_PRINTF
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config SPRINTF
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bool
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default y
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config SPL_SPRINTF
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bool
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config TPL_SPRINTF
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bool
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config SSCANF
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bool
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default n
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config STRTO
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bool
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default y
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config SPL_STRTO
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bool
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config TPL_STRTO
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bool
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config IMAGE_SPARSE
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bool
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config IMAGE_SPARSE_FILLBUF_SIZE
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hex "Android sparse image CHUNK_TYPE_FILL buffer size"
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default 0x80000
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depends on IMAGE_SPARSE
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help
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Set the size of the fill buffer used when processing CHUNK_TYPE_FILL
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chunks.
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config USE_PRIVATE_LIBGCC
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bool "Use private libgcc"
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depends on HAVE_PRIVATE_LIBGCC
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default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS)
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help
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This option allows you to use the built-in libgcc implementation
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of U-Boot instead of the one provided by the compiler.
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If unsure, say N.
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config SYS_HZ
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int
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default 1000
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help
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The frequency of the timer returned by get_timer().
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get_timer() must operate in milliseconds and this option must be
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set to 1000.
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config SPL_USE_TINY_PRINTF
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bool "Enable tiny printf() version in SPL"
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depends on SPL
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default y
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help
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This option enables a tiny, stripped down printf version.
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This should only be used in space limited environments,
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like SPL versions with hard memory limits. This version
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reduces the code size by about 2.5KiB on armv7.
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The supported format specifiers are %c, %s, %u/%d and %x.
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config TPL_USE_TINY_PRINTF
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bool "Enable tiny printf() version in TPL"
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depends on TPL
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default y if SPL_USE_TINY_PRINTF
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help
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This option enables a tiny, stripped down printf version.
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This should only be used in space limited environments,
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like SPL versions with hard memory limits. This version
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reduces the code size by about 2.5KiB on armv7.
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The supported format specifiers are %c, %s, %u/%d and %x.
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config PANIC_HANG
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bool "Do not reset the system on fatal error"
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help
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Define this option to stop the system in case of a fatal error,
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so that you have to reset it manually. This is probably NOT a good
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idea for an embedded system where you want the system to reboot
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automatically as fast as possible, but it may be useful during
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development since you can try to debug the conditions that lead to
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the situation.
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config REGEX
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bool "Enable regular expression support"
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default y if NET
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help
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If this variable is defined, U-Boot is linked against the
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SLRE (Super Light Regular Expression) library, which adds
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regex support to some commands, for example "env grep" and
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"setexpr".
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choice
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prompt "Pseudo-random library support type"
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depends on NET_RANDOM_ETHADDR || RANDOM_UUID || CMD_UUID || \
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RNG_SANDBOX || UT_LIB && AES
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default LIB_RAND
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help
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Select the library to provide pseudo-random number generator
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functions. LIB_HW_RAND supports certain hardware engines that
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provide this functionality. If in doubt, select LIB_RAND.
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config LIB_RAND
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bool "Pseudo-random library support"
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config LIB_HW_RAND
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bool "HW Engine for random library support"
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endchoice
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config SPL_TINY_MEMSET
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bool "Use a very small memset() in SPL"
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help
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The faster memset() is the arch-specific one (if available) enabled
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by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
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better performance by writing a word at a time. But in very
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size-constrained environments even this may be too big. Enable this
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option to reduce code size slightly at the cost of some speed.
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config TPL_TINY_MEMSET
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bool "Use a very small memset() in TPL"
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help
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The faster memset() is the arch-specific one (if available) enabled
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by CONFIG_USE_ARCH_MEMSET. If that is not enabled, we can still get
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better performance by writing a word at a time. But in very
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size-constrained environments even this may be too big. Enable this
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option to reduce code size slightly at the cost of some speed.
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config RBTREE
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bool
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config BITREVERSE
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bool "Bit reverse library from Linux"
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config TRACE
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bool "Support for tracing of function calls and timing"
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imply CMD_TRACE
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help
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Enables function tracing within U-Boot. This allows recording of call
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traces including timing information. The command can write data to
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memory for exporting for analysis (e.g. using bootchart).
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See doc/README.trace for full details.
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config TRACE_BUFFER_SIZE
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hex "Size of trace buffer in U-Boot"
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depends on TRACE
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default 0x01000000
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help
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Sets the size of the trace buffer in U-Boot. This is allocated from
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memory during relocation. If this buffer is too small, the trace
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history will be truncated, with later records omitted.
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If early trace is enabled (i.e. before relocation), this buffer must
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be large enough to include all the data from the early trace buffer as
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well, since this is copied over to the main buffer during relocation.
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A trace record is emitted for each function call and each record is
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12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
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the size is too small then 'trace stats' will show a message saying
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how many records were dropped due to buffer overflow.
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config TRACE_CALL_DEPTH_LIMIT
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int "Trace call depth limit"
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depends on TRACE
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default 15
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help
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Sets the maximum call depth up to which function calls are recorded.
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config TRACE_EARLY
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bool "Enable tracing before relocation"
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depends on TRACE
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help
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Sometimes it is helpful to trace execution of U-Boot before
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relocation. This is possible by using a arch-specific, fixed buffer
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position in memory. Enable this option to start tracing as early as
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possible after U-Boot starts.
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config TRACE_EARLY_SIZE
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hex "Size of early trace buffer in U-Boot"
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depends on TRACE_EARLY
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default 0x00100000
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help
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Sets the size of the early trace buffer in bytes. This is used to hold
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tracing information before relocation.
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config TRACE_EARLY_CALL_DEPTH_LIMIT
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int "Early trace call depth limit"
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depends on TRACE_EARLY
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default 200
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help
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Sets the maximum call depth up to which function calls are recorded
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during early tracing.
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config TRACE_EARLY_ADDR
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hex "Address of early trace buffer in U-Boot"
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depends on TRACE_EARLY
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default 0x00100000
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help
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Sets the address of the early trace buffer in U-Boot. This memory
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must be accessible before relocation.
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A trace record is emitted for each function call and each record is
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12 bytes (see struct trace_call). A suggested minimum size is 1MB. If
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the size is too small then the message which says the amount of early
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data being coped will the the same as the
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source lib/dhry/Kconfig
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menu "Security support"
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config AES
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bool "Support the AES algorithm"
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help
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This provides a means to encrypt and decrypt data using the AES
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(Advanced Encryption Standard). This algorithm uses a symetric key
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and is widely used as a streaming cipher. Different key lengths are
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supported by the algorithm but only a 128-bit key is supported at
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present.
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source lib/rsa/Kconfig
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source lib/crypto/Kconfig
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config TPM
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bool "Trusted Platform Module (TPM) Support"
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depends on DM
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help
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This enables support for TPMs which can be used to provide security
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features for your board. The TPM can be connected via LPC or I2C
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and a sandbox TPM is provided for testing purposes. Use the 'tpm'
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command to interactive the TPM. Driver model support is provided
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for the low-level TPM interface, but only one TPM is supported at
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a time by the TPM library.
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config SPL_TPM
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bool "Trusted Platform Module (TPM) Support in SPL"
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depends on SPL_DM
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help
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This enables support for TPMs which can be used to provide security
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features for your board. The TPM can be connected via LPC or I2C
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and a sandbox TPM is provided for testing purposes. Use the 'tpm'
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command to interactive the TPM. Driver model support is provided
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for the low-level TPM interface, but only one TPM is supported at
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a time by the TPM library.
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config TPL_TPM
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bool "Trusted Platform Module (TPM) Support in TPL"
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depends on TPL_DM
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help
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This enables support for TPMs which can be used to provide security
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features for your board. The TPM can be connected via LPC or I2C
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and a sandbox TPM is provided for testing purposes. Use the 'tpm'
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command to interactive the TPM. Driver model support is provided
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for the low-level TPM interface, but only one TPM is supported at
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a time by the TPM library.
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endmenu
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menu "Android Verified Boot"
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config LIBAVB
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bool "Android Verified Boot 2.0 support"
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depends on ANDROID_BOOT_IMAGE
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default n
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help
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This enables support of Android Verified Boot 2.0 which can be used
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to assure the end user of the integrity of the software running on a
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device. Introduces such features as boot chain of trust, rollback
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protection etc.
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endmenu
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menu "Hashing Support"
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config SHA1
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bool "Enable SHA1 support"
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help
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This option enables support of hashing using SHA1 algorithm.
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The hash is calculated in software.
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The SHA1 algorithm produces a 160-bit (20-byte) hash value
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(digest).
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config SHA256
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bool "Enable SHA256 support"
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help
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This option enables support of hashing using SHA256 algorithm.
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The hash is calculated in software.
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The SHA256 algorithm produces a 256-bit (32-byte) hash value
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(digest).
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config SHA512_ALGO
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bool "Enable SHA512 algorithm"
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help
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This option enables support of internal SHA512 algorithm.
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config SHA512
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bool "Enable SHA512 support"
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depends on SHA512_ALGO
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help
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This option enables support of hashing using SHA512 algorithm.
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The hash is calculated in software.
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The SHA512 algorithm produces a 512-bit (64-byte) hash value
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(digest).
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config SHA384
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bool "Enable SHA384 support"
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depends on SHA512_ALGO
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help
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This option enables support of hashing using SHA384 algorithm.
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The hash is calculated in software.
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The SHA384 algorithm produces a 384-bit (48-byte) hash value
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(digest).
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config SHA_HW_ACCEL
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bool "Enable hashing using hardware"
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help
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This option enables hardware acceleration
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for SHA1/SHA256 hashing.
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This affects the 'hash' command and also the
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hash_lookup_algo() function.
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config SHA_PROG_HW_ACCEL
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bool "Enable Progressive hashing support using hardware"
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depends on SHA_HW_ACCEL
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help
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This option enables hardware-acceleration for
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SHA1/SHA256 progressive hashing.
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Data can be streamed in a block at a time and the hashing
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is performed in hardware.
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config MD5
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bool "Support MD5 algorithm"
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help
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This option enables MD5 support. MD5 is an algorithm designed
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in 1991 that produces a 16-byte digest (or checksum) from its input
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data. It has a number of vulnerabilities which preclude its use in
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security applications, but it can be useful for providing a quick
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checksum of a block of data.
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config SPL_MD5
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bool "Support MD5 algorithm in SPL"
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help
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This option enables MD5 support in SPL. MD5 is an algorithm designed
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in 1991 that produces a 16-byte digest (or checksum) from its input
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data. It has a number of vulnerabilities which preclude its use in
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security applications, but it can be useful for providing a quick
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checksum of a block of data.
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config CRC32C
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bool
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config XXHASH
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bool
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endmenu
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menu "Compression Support"
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config LZ4
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bool "Enable LZ4 decompression support"
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help
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If this option is set, support for LZ4 compressed images
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is included. The LZ4 algorithm can run in-place as long as the
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compressed image is loaded to the end of the output buffer, and
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trades lower compression ratios for much faster decompression.
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NOTE: This implements the release version of the LZ4 frame
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format as generated by default by the 'lz4' command line tool.
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This is not the same as the outdated, less efficient legacy
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frame format currently (2015) implemented in the Linux kernel
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(generated by 'lz4 -l'). The two formats are incompatible.
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config LZMA
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bool "Enable LZMA decompression support"
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help
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This enables support for LZMA (Lempel-Ziv-Markov chain algorithm),
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a dictionary compression algorithm that provides a high compression
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ratio and fairly fast decompression speed. See also
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CONFIG_CMD_LZMADEC which provides a decode command.
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config LZO
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bool "Enable LZO decompression support"
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help
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This enables support for LZO compression algorithm.r
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config GZIP
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bool "Enable gzip decompression support"
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select ZLIB
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default y
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help
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This enables support for GZIP compression algorithm.
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config ZLIB_UNCOMPRESS
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bool "Enables zlib's uncompress() functionality"
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help
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This enables an extra zlib functionality: the uncompress() function,
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which decompresses data from a buffer into another, knowing their
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sizes. Unlike gunzip(), there is no header parsing.
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config GZIP_COMPRESSED
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bool
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select ZLIB
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config BZIP2
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bool "Enable bzip2 decompression support"
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help
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This enables support for BZIP2 compression algorithm.
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config ZLIB
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bool
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default y
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help
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This enables ZLIB compression lib.
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config ZSTD
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bool "Enable Zstandard decompression support"
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select XXHASH
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help
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This enables Zstandard decompression library.
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config SPL_LZ4
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bool "Enable LZ4 decompression support in SPL"
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help
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This enables support for the LZ4 decompression algorithm in SPL. LZ4
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is a lossless data compression algorithm that is focused on
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fast compression and decompression speed. It belongs to the LZ77
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family of byte-oriented compression schemes.
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config SPL_LZMA
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bool "Enable LZMA decompression support for SPL build"
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help
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This enables support for LZMA compression algorithm for SPL boot.
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config SPL_LZO
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bool "Enable LZO decompression support in SPL"
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help
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This enables support for LZO compression algorithm in the SPL.
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config SPL_GZIP
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bool "Enable gzip decompression support for SPL build"
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select SPL_ZLIB
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help
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This enables support for GZIP compression altorithm for SPL boot.
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config SPL_ZLIB
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bool
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help
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This enables compression lib for SPL boot.
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config SPL_ZSTD
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bool "Enable Zstandard decompression support in SPL"
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select XXHASH
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help
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This enables Zstandard decompression library in the SPL.
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endmenu
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config ERRNO_STR
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bool "Enable function for getting errno-related string message"
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help
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The function errno_str(int errno), returns a pointer to the errno
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corresponding text message:
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- if errno is null or positive number - a pointer to "Success" message
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- if errno is negative - a pointer to errno related message
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config HEXDUMP
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bool "Enable hexdump"
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help
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This enables functions for printing dumps of binary data.
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config OF_LIBFDT
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bool "Enable the FDT library"
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default y if OF_CONTROL
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help
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This enables the FDT library (libfdt). It provides functions for
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accessing binary device tree images in memory, such as adding and
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removing nodes and properties, scanning through the tree and finding
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particular compatible nodes. The library operates on a flattened
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version of the device tree.
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config OF_LIBFDT_ASSUME_MASK
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hex "Mask of conditions to assume for libfdt"
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depends on OF_LIBFDT || FIT
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default 0
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help
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Use this to change the assumptions made by libfdt about the
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device tree it is working with. A value of 0 means that no assumptions
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|
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
|
|
|
|
config LIB_ELF
|
|
bool
|
|
help
|
|
Supoort basic elf loading/validating functions.
|
|
This supports fir 32 bit and 64 bit versions.
|
|
|
|
endmenu
|