This is the string of commands that will be used as bootcmd and if
AUTOBOOT is set, automatically run.
+config USE_PREBOOT
+ bool "Enable preboot"
+ help
+ When this option is enabled, the existence of the environment
+ variable "preboot" will be checked immediately before starting the
+ CONFIG_BOOTDELAY countdown and/or running the auto-boot command resp.
+ entering interactive mode.
+
+ This feature is especially useful when "preboot" is automatically
+ generated or modified. For example, the boot code can modify the
+ "preboot" when a user holds down a certain combination of keys.
+
+config PREBOOT
+ string "preboot default value"
+ depends on USE_PREBOOT
+ default ""
+ help
+ This is the default of "preboot" environment variable.
+
menu "Console"
config MENU
All Messages with a loglevel smaller than the console loglevel will
be compiled in. The loglevels are defined as follows:
- 0 (KERN_EMERG) system is unusable
- 1 (KERN_ALERT) action must be taken immediately
- 2 (KERN_CRIT) critical conditions
- 3 (KERN_ERR) error conditions
- 4 (KERN_WARNING) warning conditions
- 5 (KERN_NOTICE) normal but significant condition
- 6 (KERN_INFO) informational
- 7 (KERN_DEBUG) debug-level messages
+ 0 - emergency
+ 1 - alert
+ 2 - critical
+ 3 - error
+ 4 - warning
+ 5 - note
+ 6 - info
+ 7 - debug
+ 8 - debug content
+ 9 - debug hardware I/O
config SPL_LOGLEVEL
int
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
higher than this will be ignored. If possible log statements below
this level will be discarded at build time. Levels:
- 0 - panic
- 1 - critical
- 2 - error
- 3 - warning
- 4 - note
- 5 - info
- 6 - detail
+ 0 - emergency
+ 1 - alert
+ 2 - critical
+ 3 - error
+ 4 - warning
+ 5 - note
+ 6 - info
7 - debug
+ 8 - debug content
+ 9 - debug hardware I/O
config SPL_LOG_MAX_LEVEL
int "Maximum log level to record in SPL"
higher than this will be ignored. If possible log statements below
this level will be discarded at build time. Levels:
- 0 - panic
- 1 - critical
- 2 - error
- 3 - warning
- 4 - note
- 5 - info
- 6 - detail
+ 0 - emergency
+ 1 - alert
+ 2 - critical
+ 3 - error
+ 4 - warning
+ 5 - note
+ 6 - info
7 - debug
+ 8 - debug content
+ 9 - debug hardware I/O
config TPL_LOG_MAX_LEVEL
int "Maximum log level to record in TPL"
higher than this will be ignored. If possible log statements below
this level will be discarded at build time. Levels:
- 0 - panic
- 1 - critical
- 2 - error
- 3 - warning
- 4 - note
- 5 - info
- 6 - detail
+ 0 - emergency
+ 1 - alert
+ 2 - critical
+ 3 - error
+ 4 - warning
+ 5 - note
+ 6 - info
7 - debug
+ 8 - debug content
+ 9 - debug hardware I/O
+
+config LOG_DEFAULT_LEVEL
+ int "Default logging level to display"
+ default 6
+ help
+ This is the default logging level set when U-Boot starts. It can
+ be adjusted later using the 'log level' command. Note that setting
+ this to a value above LOG_MAX_LEVEL will be ineffective, since the
+ higher levels are not compiled in to U-Boot.
+
+ 0 - emergency
+ 1 - alert
+ 2 - critical
+ 3 - error
+ 4 - warning
+ 5 - note
+ 6 - info
+ 7 - debug
+ 8 - debug content
+ 9 - debug hardware I/O
config LOG_CONSOLE
bool "Allow log output to the console"
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.
+
+config BOARD_TYPES
+ bool "Call get_board_type() to get and display the board type"
+ help
+ If this option is enabled, checkboard() will call get_board_type()
+ to get a string containing the board type and this will be
+ displayed immediately after the model is shown on the console
+ early in boot.
+
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"
projects / oweals / u-boot.git / blobdiff