X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=README;h=bab1a95d200a10c39c542682ac6e58cfbfb46940;hp=67a071fccac5f909a2193d39350757fd14235611;hb=ec7023db8dc95966919589541f1ca09355a3f7a5;hpb=785881f775252940185e10fbb2d5299c9ffa6bce

diff --git a/README b/README
index 67a071fcca..bab1a95d20 100644
--- a/README
+++ b/README
@@ -634,14 +634,6 @@ 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
@@ -852,6 +844,7 @@ The following options need to be configured:
 		CONFIG_CMD_FDOS		* Dos diskette Support
 		CONFIG_CMD_FLASH	  flinfo, erase, protect
 		CONFIG_CMD_FPGA		  FPGA device initialization support
+		CONFIG_CMD_FUSE		  Device fuse support
 		CONFIG_CMD_GETTIME	* Get time since boot
 		CONFIG_CMD_GO		* the 'go' command (exec code)
 		CONFIG_CMD_GREPENV	* search environment
@@ -938,6 +931,13 @@ The following options need to be configured:
 
 		XXX - this list needs to get updated!
 
+- Regular expression support:
+		CONFIG_REGEX
+                If this variable is defined, U-Boot is linked against
+                the SLRE (Super Light Regular Expression) library,
+                which adds regex support to some commands, as for
+                example "env grep" and "setexpr".
+
 - Device tree:
 		CONFIG_OF_CONTROL
 		If this variable is defined, U-Boot will use a device tree
@@ -2839,8 +2839,18 @@ FIT uImage format:
 		CONFIG_SPL_LDSCRIPT
 		LDSCRIPT for linking the SPL binary.
 
+		CONFIG_SPL_MAX_FOOTPRINT
+		Maximum size in memory allocated to the SPL, BSS included.
+		When defined, the linker checks that the actual memory
+		used by SPL from _start to __bss_end does not exceed it.
+		CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE
+		must not be both defined at the same time.
+
 		CONFIG_SPL_MAX_SIZE
-		Maximum binary size (text, data and rodata) of the SPL binary.
+		Maximum size of the SPL image (text, data, rodata, and
+		linker lists sections), BSS excluded.
+		When defined, the linker checks that the actual size does
+		not exceed it.
 
 		CONFIG_SPL_TEXT_BASE
 		TEXT_BASE for linking the SPL binary.
@@ -2853,7 +2863,11 @@ FIT uImage format:
 		Link address for the BSS within the SPL binary.
 
 		CONFIG_SPL_BSS_MAX_SIZE
-		Maximum binary size of the BSS section of the SPL binary.
+		Maximum size in memory allocated to the SPL BSS.
+		When defined, the linker checks that the actual memory used
+		by SPL from __bss_start to __bss_end does not exceed it.
+		CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE
+		must not be both defined at the same time.
 
 		CONFIG_SPL_STACK
 		Adress of the start of the stack SPL will use
@@ -2972,8 +2986,11 @@ FIT uImage format:
 		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.
+		Image offset to which the SPL should be padded before appending
+		the SPL payload. By default, this is defined as
+		CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined.
+		CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL
+		payload without any padding, or >= CONFIG_SPL_MAX_SIZE.
 
 		CONFIG_SPL_TARGET
 		Final target image containing SPL and payload.  Some SPLs
@@ -3239,6 +3256,15 @@ Configuration Settings:
 		digits and dots.  Recommended value: 45 (9..1) for 80
 		column displays, 15 (3..1) for 40 column displays.
 
+- CONFIG_FLASH_VERIFY
+		If defined, the content of the flash (destination) is compared
+		against the source after the write operation. An error message
+		will be printed when the contents are not identical.
+		Please note that this option is useless in nearly all cases,
+		since such flash programming errors usually are detected earlier
+		while unprotecting/erasing/programming. Please only enable
+		this option if you really know what you are doing.
+
 - CONFIG_SYS_RX_ETH_BUFFER:
 		Defines the number of Ethernet receive buffers. On some
 		Ethernet controllers it is recommended to set this value
@@ -3846,9 +3872,13 @@ Low Level (hardware related) configuration options:
 - CONFIG_SYS_SRIOn_MEM_SIZE:
 		Size of SRIO port 'n' memory region
 
-- CONFIG_SYS_NDFC_16
-		Defined to tell the NDFC that the NAND chip is using a
-		16 bit bus.
+- CONFIG_SYS_NAND_BUSWIDTH_16BIT
+		Defined to tell the NAND controller that the NAND chip is using
+		a 16 bit bus.
+		Not all NAND drivers use this symbol.
+		Example of drivers that use it:
+		- drivers/mtd/nand/ndfc.c
+		- drivers/mtd/nand/mxc_nand.c
 
 - CONFIG_SYS_NDFC_EBC0_CFG
 		Sets the EBC0_CFG register for the NDFC. If not defined