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-rw-r--r--README18
1 files changed, 18 insertions, 0 deletions
diff --git a/README b/README
index 256d6ecc65..a248ab5d39 100644
--- a/README
+++ b/README
@@ -3200,6 +3200,19 @@ FIT uImage format:
-150 common/cmd_nand.c Incorrect FIT image format
151 common/cmd_nand.c FIT image format OK
+- legacy image format:
+ CONFIG_IMAGE_FORMAT_LEGACY
+ enables the legacy image format support in U-Boot.
+
+ Default:
+ enabled if CONFIG_FIT_SIGNATURE is not defined.
+
+ CONFIG_DISABLE_IMAGE_LEGACY
+ disable the legacy image format
+
+ This define is introduced, as the legacy image format is
+ enabled per default for backward compatibility.
+
- FIT image support:
CONFIG_FIT
Enable support for the FIT uImage format.
@@ -3216,6 +3229,11 @@ FIT uImage format:
using a hash signed and verified using RSA. 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
+ disabled. If a board need legacy image format support
+ enable this through CONFIG_IMAGE_FORMAT_LEGACY
+
- Standalone program support:
CONFIG_STANDALONE_LOAD_ADDR
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