X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=README;h=2352e3862bfa81f4ad2bca262cc26529ac008fd7;hb=6b27f01ed6d808f99ca3cf64ed6a0c87e65310cf;hp=653ef6aa4a55d57686165e56eeec847dcd40b3f1;hpb=a098cf41fdb2a6607c675f7fe4f3164617c9367e;p=karo-tx-uboot.git

diff --git a/README b/README
index 653ef6aa4a..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
@@ -2378,6 +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
 
@@ -2404,6 +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
 
@@ -2691,10 +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.
 
@@ -2793,6 +2819,12 @@ FIT uImage format:
 		CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME
 		Filename to read to load U-Boot when reading from FAT
 
+		CONFIG_SPL_MPC83XX_WAIT_FOR_NAND
+		Set this for NAND SPL on PPC mpc83xx targets, so that
+		start.S waits for the rest of the SPL to load before
+		continuing (the hardware starts execution after just
+		loading the first page rather than the full 4K).
+
 		CONFIG_SPL_NAND_BASE
 		Include nand_base.c in the SPL.  Requires
 		CONFIG_SPL_NAND_DRIVERS.
@@ -2850,6 +2882,10 @@ FIT uImage format:
 		CONFIG_SPL_LIBGENERIC_SUPPORT
 		Support for lib/libgeneric.o in SPL binary
 
+		CONFIG_SPL_PAD_TO
+		Linker address to which the SPL should be padded before
+		appending the SPL payload.
+
 		CONFIG_SPL_TARGET
 		Final target image containing SPL and payload.  Some SPLs
 		use an arch-specific makefile fragment instead, for
@@ -3448,6 +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:
 ---------------------------------------------------