X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=README;h=453189156c818d0fa49c2468dc49157cabbf4d44;hb=81ac7e51ccf2984e9c0964a883d6b7e8fe875aad;hp=93c700947a3b774a6b70d41ae7a4bf482c5ce3ca;hpb=2b74433f365fa677a60431a80e524b5d8d04e995;p=oweals%2Fu-boot.git

diff --git a/README b/README
index 93c700947a..453189156c 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
@@ -2839,8 +2831,18 @@ 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 +2855,11 @@ 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 +2978,11 @@ 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
@@ -3314,6 +3323,10 @@ Configuration Settings:
 	offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than
 	directly. You should not need to touch this setting.
 
+- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only)
+	This is set by OMAP boards for the max time that reset should
+	be asserted. See doc/README.omap-reset-time for details on how
+	the value can be calulated on a given board.
 
 The following definitions that deal with the placement and management
 of environment data (variable area); in general, we support the
@@ -3563,6 +3576,12 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface.
 	  Define this to the name of the volume that you want to store the
 	  environment in.
 
+	- CONFIG_ENV_UBI_VOLUME_REDUND:
+
+	  Define this to the name of another volume to store a second copy of
+	  the environment in.  This will enable redundant environments in UBI.
+	  It is assumed that both volumes are in the same MTD partition.
+
 	- CONFIG_UBI_SILENCE_MSG
 	- CONFIG_UBIFS_SILENCE_MSG
 
@@ -3840,9 +3859,13 @@ 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