Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 14c83f4bb1796698e3a88b192a390395c51febeb..bab1a95d200a10c39c542682ac6e58cfbfb46940 100644 (file)
--- a/README
+++ b/README
@@ -844,6 +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
@@ -930,6 +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
@@ -2831,8 +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.
@@ -2845,7 +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
@@ -3234,6 +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