config USE_TINY_PRINTF
bool "Enable tiny printf() version"
+ depends on SPL || TPL
+ default y
help
This option enables a tiny, stripped down printf version.
This should only be used in space limited environments,
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 envrionments even this may be too big. Enable this
+ 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
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 envrionments even this may be too big. Enable this
+ 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
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 CRC32C
bool
+config XXHASH
+ bool
+
endmenu
menu "Compression 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
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
source lib/efi_loader/Kconfig
source lib/optee/Kconfig
+config TEST_FDTDEC
+ bool "enable fdtdec test"
+ depends on OF_LIBFDT
+
endmenu
projects / oweals / u-boot.git / blobdiff