X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=README;h=2352e3862bfa81f4ad2bca262cc26529ac008fd7;hp=264a27fe5ebf842aabb1acca205e128934e5dd82;hb=a6187dccd813920524987792e49ef2feffb213e6;hpb=22f4442d12a3833e29b6580f6cf9bc0e55340504

diff --git a/README b/README
index 264a27fe5e..2352e3862b 100644
--- a/README
+++ b/README
@@ -616,6 +616,14 @@ The following options need to be configured:
 		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
@@ -849,6 +857,7 @@ The following options need to be configured:
 		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
@@ -1486,6 +1495,21 @@ CBFS (Coreboot Filesystem) support
 		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.
@@ -1495,7 +1519,6 @@ CBFS (Coreboot Filesystem) support
 		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
@@ -2364,6 +2387,15 @@ CBFS (Coreboot Filesystem) support
 		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
 
@@ -2390,6 +2422,11 @@ CBFS (Coreboot Filesystem) support
 		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
 
@@ -2677,10 +2714,13 @@ FIT uImage format:
 		CONFIG_FB_ADDR
 
 		Define CONFIG_FB_ADDR if you want to use specific
-		address for frame buffer.
-		Then system will reserve the frame buffer address to
-		defined address instead of lcd_setmem (this function
-		grabs the memory for frame buffer by panel's size).
+		address for frame buffer.  This is typically the case
+		when using a graphics controller has separate video
+		memory.  U-Boot will then place the frame buffer at
+		the given address instead of dynamically reserving it
+		in system RAM by calling lcd_setmem(), which grabs
+		the memory for the frame buffer depending on the
+		configured panel size.
 
 		Please see board_init_f function.
 
@@ -2985,9 +3025,6 @@ Configuration Settings:
 		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
 
@@ -3447,6 +3484,16 @@ use the "saveenv" command to store a valid environment.
 		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:
 ---------------------------------------------------