Merge u-boot/master into u-boot-ti/master

[glsdk/glsdk-u-boot.git] / README

diff --git a/README b/README
index d8cb3940d4f04810dcc6fe88a5f03f0b0cd5d8a8..d51ece946c309a37fa3fcf5c1d91f0174e2b016f 100644 (file)
--- a/README
+++ b/README
@@ -842,7 +842,8 @@ The following options need to be configured:
                CONFIG_CMD_I2C          * I2C serial bus support
                CONFIG_CMD_IDE          * IDE harddisk support
                CONFIG_CMD_IMI            iminfo
-               CONFIG_CMD_IMLS           List all found images
+               CONFIG_CMD_IMLS           List all images found in NOR flash
+               CONFIG_CMD_IMLS_NAND      List all images found in NAND flash
                CONFIG_CMD_IMMAP        * IMMR dump support
                CONFIG_CMD_IMPORTENV    * import an environment
                CONFIG_CMD_INI          * import data from an ini file into the env
@@ -876,6 +877,7 @@ The following options need to be configured:
                CONFIG_CMD_READ         * Read raw data from partition
                CONFIG_CMD_REGINFO      * Register dump
                CONFIG_CMD_RUN            run command in env variable
+               CONFIG_CMD_SANDBOX      * sb command to access sandbox features
                CONFIG_CMD_SAVES        * save S record dump
                CONFIG_CMD_SCSI         * SCSI Support
                CONFIG_CMD_SDRAM        * print SDRAM configuration information
@@ -1530,6 +1532,17 @@ CBFS (Coreboot Filesystem) support
                allows for a "silent" boot where a splash screen is
                loaded very quickly after power-on.
 
+               CONFIG_SPLASHIMAGE_GUARD
+
+               If this option is set, then U-Boot will prevent the environment
+               variable "splashimage" from being set to a problematic address
+               (see README.displaying-bmps and README.arm-unaligned-accesses).
+               This option is useful for targets where, due to alignment
+               restrictions, an improperly aligned BMP image will cause a data
+               abort. If you think you will not have problems with unaligned
+               accesses (for example because your toolchain prevents them)
+               there is no need to set this option.
+
                CONFIG_SPLASH_SCREEN_ALIGN
 
                If this option is set the splash image can be freely positioned
@@ -1550,6 +1563,14 @@ CBFS (Coreboot Filesystem) support
                        => vertically centered image
                           at x = dspWidth - bmpWidth - 9
 
+               CONFIG_SPLASH_SCREEN_PREPARE
+
+               If this option is set then the board_splash_screen_prepare()
+               function, which must be defined in your code, is called as part
+               of the splash screen display sequence. It gives the board an
+               opportunity to prepare the splash image data before it is
+               processed and sent to the frame buffer by U-Boot.
+
 - Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP
 
                If this option is set, additionally to standard BMP
@@ -3810,6 +3831,15 @@ Low Level (hardware related) configuration options:
                that is executed before the actual U-Boot. E.g. when
                compiling a NAND SPL.
 
+- CONFIG_ARCH_MAP_SYSMEM
+               Generally U-Boot (and in particular the md command) uses
+               effective address. It is therefore not necessary to regard
+               U-Boot address as virtual addresses that need to be translated
+               to physical addresses. However, sandbox requires this, since
+               it maintains its own little RAM buffer which contains all
+               addressable memory. This option causes some memory accesses
+               to be mapped through map_sysmem() / unmap_sysmem().
+
 - CONFIG_USE_ARCH_MEMCPY
   CONFIG_USE_ARCH_MEMSET
                If these options are used a optimized version of memcpy/memset will