Allow runtime configuration of "zero-delay" check

[platform/kernel/u-boot.git] / README

diff --git a/README b/README
index 5793b0a..a668748 100644 (file)
--- a/README
+++ b/README
@@ -704,6 +704,8 @@ The following options need to be configured:
 - Boot Delay:  CONFIG_BOOTDELAY - in seconds
                Delay before automatically booting the default image;
                set to -1 to disable autoboot.
+               set to -2 to autoboot with no delay and not check for abort
+               (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined).
 
                See doc/README.autoboot for these options that
                work with CONFIG_BOOTDELAY. None are required.
@@ -1483,6 +1485,12 @@ The following options need to be configured:
                can be displayed via the splashscreen support or the
                bmp command.
 
+- Do compresssing for memory range:
+               CONFIG_CMD_ZIP
+
+               If this option is set, it would use zlib deflate method
+               to compress the specified memory at its best effort.
+
 - Compression support:
                CONFIG_BZIP2
 
@@ -2597,6 +2605,15 @@ FIT uImage format:
                CONFIG_SYS_SPL_MALLOC_SIZE
                The size of the malloc pool used in SPL.
 
+               CONFIG_SPL_FRAMEWORK
+               Enable the SPL framework under common/.  This framework
+               supports MMC, NAND and YMODEM loading of U-Boot and NAND
+               NAND loading of the Linux Kernel.
+
+               CONFIG_SPL_DISPLAY_PRINT
+               For ARM, enable an optional function to print more information
+               about the running system.
+
                CONFIG_SPL_LIBCOMMON_SUPPORT
                Support for common/libcommon.o in SPL binary
 
@@ -2660,6 +2677,9 @@ FIT uImage format:
                CONFIG_SPL_SPI_SUPPORT
                Support for drivers/spi/libspi.o in SPL binary
 
+               CONFIG_SPL_RAM_DEVICE
+               Support for running image already present in ram, in SPL binary
+
                CONFIG_SPL_LIBGENERIC_SUPPORT
                Support for lib/libgeneric.o in SPL binary
 
@@ -4670,7 +4690,10 @@ Over time, many people have reported problems when trying to use the
 consider minicom to be broken, and recommend not to use it. Under
 Unix, I recommend to use C-Kermit for general purpose use (and
 especially for kermit binary protocol download ("loadb" command), and
-use "cu" for S-Record download ("loads" command).
+use "cu" for S-Record download ("loads" command).  See
+http://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3.
+for help with kermit.
+
 
 Nevertheless, if you absolutely want to use it try adding this
 configuration to your "File transfer protocols" section: