env: Add support for UBI environment

[karo-tx-uboot.git] / README

diff --git a/README b/README
index da8b68a5a95d09cd2d01593e4feb03fd12258186..93c700947a3b774a6b70d41ae7a4bf482c5ce3ca 100644 (file)
--- a/README
+++ b/README
@@ -3548,6 +3548,27 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface.
        environment. If redundant environment is used, it will be copied to
        CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE.
 
+- CONFIG_ENV_IS_IN_UBI:
+
+       Define this if you have an UBI volume that you want to use for the
+       environment.  This has the benefit of wear-leveling the environment
+       accesses, which is important on NAND.
+
+       - CONFIG_ENV_UBI_PART:
+
+         Define this to a string that is the mtd partition containing the UBI.
+
+       - CONFIG_ENV_UBI_VOLUME:
+
+         Define this to the name of the volume that you want to store the
+         environment in.
+
+       - CONFIG_UBI_SILENCE_MSG
+       - CONFIG_UBIFS_SILENCE_MSG
+
+         You will probably want to define these to avoid a really noisy system
+         when storing the env in UBI.
+
 - CONFIG_SYS_SPI_INIT_OFFSET
 
        Defines offset to the initial SPI buffer area in DPRAM. The