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-rw-r--r--README23
1 files changed, 19 insertions, 4 deletions
diff --git a/README b/README
index f38ab15b8b6..322697bdd2a 100644
--- a/README
+++ b/README
@@ -3152,8 +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'.
@@ -3447,8 +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
@@ -4919,6 +4931,9 @@ 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.