boot loader that has already initialized the UART. Define this
variable to flush the UART at init time.
+ CONFIG_SYS_NS16550_BROKEN_TEMT
+
+ 16550 UART set the Transmitter Empty (TEMT) Bit when all output
+ has finished and the transmitter is totally empty. U-Boot waits
+ for this bit to be set to initialize the serial console. On some
+ broken platforms this bit is not set in SPL making U-Boot to
+ hang while waiting for TEMT. Define this option to avoid it.
+
- Console Interface:
Depending on board, define exactly one serial port
CONFIG_CMD_LOADS loads
CONFIG_CMD_MD5SUM print md5 message digest
(requires CONFIG_CMD_MEMORY and CONFIG_MD5)
+ CONFIG_CMD_MEMINFO * Display detailed memory information
CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base,
loop, loopw, mtest
CONFIG_CMD_MISC Misc functions like sleep etc
Normally display is black on white background; define
CONFIG_SYS_WHITE_ON_BLACK to get it inverted.
+ CONFIG_LCD_ALIGNMENT
+
+ Normally the LCD is page-aligned (tyically 4KB). If this is
+ defined then the LCD will be aligned to this value instead.
+ For ARM it is sometimes useful to use MMU_SECTION_SIZE
+ here, since it is cheaper to change data cache settings on
+ a per-section basis.
+
+ CONFIG_CONSOLE_SCROLL_LINES
+
+ When the console need to be scrolled, this is the number of
+ lines to scroll by. It defaults to 1. Increasing this makes
+ the console jump but can help speed up operation when scrolling
+ is slow.
+
CONFIG_LCD_BMP_RLE8
Support drawing of RLE8-compressed bitmaps on the LCD.
Enables an 'i2c edid' command which can read EDID
information over I2C from an attached LCD display.
-
- Splash Screen Support: CONFIG_SPLASH_SCREEN
If this option is set, the environment is checked for
run-time determined information about the hardware to the
environment. These will be named board_name, board_rev.
+ CONFIG_DELAY_ENVIRONMENT
+
+ Normally the environment is loaded when the board is
+ intialised so that it is available to U-Boot. This inhibits
+ that so that the environment is not available until
+ explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL
+ this is instead controlled by the value of
+ /config/load-environment.
+
- DataFlash Support:
CONFIG_HAS_DATAFLASH
CONFIG_SF_DEFAULT_MODE (see include/spi.h)
CONFIG_SF_DEFAULT_SPEED in Hz
+ CONFIG_CMD_SF_TEST
+
+ Define this option to include a destructive SPI flash
+ test ('sf test').
+
- SystemACE Support:
CONFIG_SYSTEMACE
non page size aligned address and this could cause major
problems.
-- CONFIG_SYS_TFTP_LOADADDR:
- Default load address for network file downloads
-
- CONFIG_SYS_LOADS_BAUD_CHANGE:
Enable temporary baudrate change while serial download
space for already greatly restricted images, including but not
limited to NAND_SPL configurations.
+- CONFIG_DISPLAY_BOARDINFO
+ Display information about the board that U-Boot is running on
+ when U-Boot starts up. The board function checkboard() is called
+ to do this.
+
+- CONFIG_DISPLAY_BOARDINFO_LATE
+ Similar to the previous option, but display this information
+ later, once stdio is running and output goes to the LCD, if
+ present.
+
Low Level (hardware related) configuration options:
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