help
This options adds the board specific name to u-boot version.
+config SILENT_CONSOLE
+ bool "Support a silent console"
+ 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.
+ Note this also silences the console when booting Linux.
+
+ When the console is set up, the variable is checked, and the
+ GD_FLG_SILENT flag is set. Changing the environment variable later
+ will update the flag.
+
+config SILENT_U_BOOT_ONLY
+ bool "Only silence the U-Boot console"
+ depends on SILENT_CONSOLE
+ help
+ Normally when the U-Boot console is silenced, Linux's console is
+ also silenced (assuming the board boots into Linux). This option
+ allows the linux console to operate normally, even if U-Boot's
+ is silenced.
+
+config SILENT_CONSOLE_UPDATE_ON_SET
+ bool "Changes to the 'silent' environment variable update immediately"
+ depends on SILENT_CONSOLE
+ default y if SILENT_CONSOLE
+ help
+ When the 'silent' environment variable is changed, update the
+ console silence flag immediately. This allows 'setenv' to be used
+ to silence or un-silence the console.
+
+ The effect is that any change to the variable will affect the
+ GD_FLG_SILENT flag.
+
+config SILENT_CONSOLE_UPDATE_ON_RELOC
+ bool "Allow flags to take effect on relocation"
+ depends on SILENT_CONSOLE
+ help
+ In some cases the environment is not available until relocation
+ (e.g. NAND). This option makes the value of the 'silent'
+ environment variable take effect at relocation.
+
+config PRE_CONSOLE_BUFFER
+ bool "Buffer characters before the console is available"
+ help
+ Prior to the console being initialised (i.e. serial UART
+ initialised etc) all console output is silently discarded.
+ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
+ buffer any console messages prior to the console being
+ initialised to a buffer. The buffer is a circular buffer, so
+ if it overflows, earlier output is discarded.
+
+ Note that this is not currently supported in SPL. It would be
+ useful to be able to share the pre-console buffer with SPL.
+
+config PRE_CON_BUF_SZ
+ int "Sets the size of the pre-console buffer"
+ depends on PRE_CONSOLE_BUFFER
+ default 4096
+ help
+ The size of the pre-console buffer affects how much console output
+ can be held before it overflows and starts discarding earlier
+ output. Normally there is very little output at this early stage,
+ unless debugging is enabled, so allow enough for ~10 lines of
+ text.
+
+ This is a useful feature if you are using a video console and
+ want to see the full boot output on the console. Without this
+ option only the post-relocation output will be displayed.
+
+config PRE_CON_BUF_ADDR
+ hex "Address of the pre-console buffer"
+ depends on PRE_CONSOLE_BUFFER
+ default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I
+ default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I
+ help
+ This sets the start address of the pre-console buffer. This must
+ be in available memory and is accessed before relocation and
+ possibly before DRAM is set up. Therefore choose an address
+ carefully.
+
+ We should consider removing this option and allocating the memory
+ in board_init_f_init_reserve() instead.
+
+config CONSOLE_MUX
+ bool "Enable console multiplexing"
+ default y if DM_VIDEO || VIDEO || LCD
+ help
+ This allows multiple devices to be used for each console 'file'.
+ For example, stdout can be set to go to serial and video.
+ Similarly, stdin can be set to come from serial and keyboard.
+ Input can be provided from either source. Console multiplexing
+ adds a small amount of size to U-Boot. Changes to the environment
+ variables stdout, stdin and stderr will take effect immediately.
+
+config SYS_CONSOLE_IS_IN_ENV
+ bool "Select console devices from the environment"
+ default y if CONSOLE_MUX
+ help
+ This allows multiple input/output devices to be set at boot time.
+ For example, if stdout is set to "serial,video" then output will
+ be sent to both the serial and video devices on boot. The
+ environment variables can be updated after boot to change the
+ input/output devices.
+
+config SYS_CONSOLE_OVERWRITE_ROUTINE
+ bool "Allow board control over console overwriting"
+ help
+ If this is enabled, and the board-specific function
+ overwrite_console() returns 1, the stdin, stderr and stdout are
+ switched to the serial port, else the settings in the environment
+ are used. If this is not enabled, the console will not be switched
+ to serial.
+
+config SYS_CONSOLE_ENV_OVERWRITE
+ bool "Update environment variables during console init"
+ help
+ The console environment variables (stdout, stdin, stderr) can be
+ used to determine the correct console devices on start-up. This
+ option writes the console devices to these variables on console
+ start-up (after relocation). This causes the environment to be
+ updated to match the console devices actually chosen.
+
+config SYS_CONSOLE_INFO_QUIET
+ bool "Don't display the console devices on boot"
+ 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
+ calling stdio_print_current_devices() from board code.
+
+config SYS_STDIO_DEREGISTER
+ bool "Allow deregistering stdio devices"
+ default y if USB_KEYBOARD
+ help
+ Generally there is no need to deregister stdio devices since they
+ are never deactivated. But if a stdio device is used which can be
+ removed (for example a USB keyboard) then this option can be
+ enabled to ensure this is handled correctly.
+
+endmenu
+
+ config DEFAULT_FDT_FILE
+ string "Default fdt file"
+ help
+ This option is used to set the default fdt file to boot OS.
+
config SYS_NO_FLASH
bool "Disable support for parallel NOR flash"
default n
projects / oweals / u-boot.git / commitdiff