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[oweals/u-boot.git] / README

diff --git a/README b/README
index a28ff133ee057c17af79a397e44325328f82dedf..febefb50c24a9bc4efacb6d4224ef17b4b244763 100644 (file)
--- a/README
+++ b/README
@@ -1257,6 +1257,9 @@ The following options need to be configured:
                SoC, then define this variable and provide board
                specific code for the "hw_watchdog_reset" function.
 
+               CONFIG_AT91_HW_WDT_TIMEOUT
+               specify the timeout in seconds. default 2 seconds.
+
 - U-Boot Version:
                CONFIG_VERSION_VARIABLE
                If this variable is defined, an environment variable
@@ -3149,8 +3152,18 @@ CBFS (Coreboot Filesystem) support
                Enable the hash verify command (hash -v). This adds to code
                size a little.
 
-               CONFIG_SHA1 - support SHA1 hashing
-               CONFIG_SHA256 - support SHA256 hashing
+               CONFIG_SHA1 - This option enables support of hashing using SHA1
+               algorithm. The hash is calculated in software.
+               CONFIG_SHA256 - This option enables support of hashing using
+               SHA256 algorithm. The hash is calculated in software.
+               CONFIG_SHA_HW_ACCEL - This option enables hardware acceleration
+               for SHA1/SHA256 hashing.
+               This affects the 'hash' command and also the
+               hash_lookup_algo() function.
+               CONFIG_SHA_PROG_HW_ACCEL - This option enables
+               hardware-acceleration for SHA1/SHA256 progressive hashing.
+               Data can be streamed in a block at a time and the hashing
+               is performed in hardware.
 
                Note: There is also a sha1sum command, which should perhaps
                be deprecated in favour of 'hash sha1'.
@@ -3444,8 +3457,10 @@ FIT uImage format:
 
                CONFIG_FIT_SIGNATURE
                This option enables signature verification of FIT uImages,
-               using a hash signed and verified using RSA. See
-               doc/uImage.FIT/signature.txt for more details.
+               using a hash signed and verified using RSA. If
+               CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
+               hashing is available using hardware, RSA library will use it.
+               See doc/uImage.FIT/signature.txt for more details.
 
                WARNING: When relying on signed FIT images with required
                signature check the legacy image format is default
@@ -4913,6 +4928,9 @@ Low Level (hardware related) configuration options:
 - CONFIG_FSL_DDR_INTERACTIVE
                Enable interactive DDR debugging. See doc/README.fsl-ddr.
 
+- CONFIG_FSL_DDR_SYNC_REFRESH
+               Enable sync of refresh for multiple controllers.
+
 - CONFIG_SYS_83XX_DDR_USES_CS0
                Only for 83xx systems. If specified, then DDR should
                be configured using CS0 and CS1 instead of CS2 and CS3.