help
This option allows the console to be silenced, meaning that no
output will appear on the console devices. This is controlled by
- setting the environment vaariable 'silent' to a non-empty value.
+ setting the environment variable 'silent' to a non-empty value.
Note this also silences the console when booting Linux.
When the console is set up, the variable is checked, and the
help
Normally U-Boot displays the current settings for stdout, stdin
and stderr on boot when the post-relocation console is set up.
- Enable this option to supress this output. It can be obtained by
+ Enable this option to suppress this output. It can be obtained by
calling stdio_print_current_devices() from board code.
config SYS_STDIO_DEREGISTER
This enables a 'log test' command to test logging. It is normally
executed from a pytest and simply outputs logging information
in various different ways to test that the logging system works
- correctly with varoius settings.
+ correctly with various settings.
config LOG_ERROR_RETURN
bool "Log all functions which return an error"
depends on LOG
help
When an error is returned in U-Boot it is sometimes difficult to
- figure out the root cause. For eaxmple, reading from SPI flash may
+ figure out the root cause. For example, reading from SPI flash may
fail due to a problem in the SPI controller or due to the flash part
not returning the expected information. This option changes
log_ret() to log any errors it sees. With this option disabled,
the relocation phase. The board function checkboard() is called to do
this.
+config BOUNCE_BUFFER
+ bool "Include bounce buffer API"
+ help
+ Some peripherals support DMA from a subset of physically
+ addressable memory only. To support such peripherals, the
+ bounce buffer API uses a temporary buffer: it copies data
+ to/from DMA regions while managing cache operations.
+
+ A second possible use of bounce buffers is their ability to
+ provide aligned buffers for DMA operations.
+
menu "Start-up hooks"
config ARCH_EARLY_INIT_R
With this option U-Boot will call arch_misc_init() after
relocation to allow miscellaneous arch-dependent initialisation
to be performed. This function should be defined by the board
- and will be called after the console is set up, after relocaiton.
+ and will be called after the console is set up, after relocation.
config BOARD_EARLY_INIT_F
bool "Call board-specific init before relocation"