Merge branch 'master' of git://git.denx.de/u-boot-dm

[oweals/u-boot.git] / README

diff --git a/README b/README
index a11e74aff1b923f3c7cd8381305c32640a61a28e..a28ff133ee057c17af79a397e44325328f82dedf 100644 (file)
--- a/README
+++ b/README
@@ -3176,8 +3176,13 @@ CBFS (Coreboot Filesystem) support
                This enables the RSA algorithm used for FIT image verification
                in U-Boot. See doc/uImage.FIT/signature.txt for more information.
 
+               The Modular Exponentiation algorithm in RSA is implemented using
+               driver model. So CONFIG_DM needs to be enabled by default for this
+               library to function.
+
                The signing part is build into mkimage regardless of this
-               option.
+               option. The software based modular exponentiation is built into
+               mkimage irrespective of this option.
 
 - bootcount support:
                CONFIG_BOOTCOUNT_LIMIT