X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=doc%2FREADME.nand;h=dee0e00a61708825f347104a4acf9a8d4de9bb9c;hb=b59d226a4e94c6ff92e2fdd684a858a0013b25d4;hp=70cf768d237056460e0bd1261a3bb0c980c4dc30;hpb=28b62f0de361ae640eb286969536a236cc8febda;p=karo-tx-uboot.git

diff --git a/doc/README.nand b/doc/README.nand
index 70cf768d23..dee0e00a61 100644
--- a/doc/README.nand
+++ b/doc/README.nand
@@ -89,6 +89,10 @@ Commands:
 
 Configuration Options:
 
+   CONFIG_SYS_NAND_U_BOOT_OFFS
+	NAND Offset from where SPL will read u-boot image. This is the starting
+	address of u-boot MTD partition in NAND.
+
    CONFIG_CMD_NAND
       Enables NAND support and commmands.
 
@@ -226,6 +230,14 @@ Platform specific options
 	detection. However ECC calculation on such plaforms would still be
 	done by GPMC controller.
 
+   CONFIG_SPL_NAND_AM33XX_BCH
+	Enables SPL-NAND driver (am335x_spl_bch.c) which supports ELM based
+        hardware ECC correction. This is useful for platforms which have ELM
+	hardware engine and use NAND boot mode.
+	Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
+	so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
+        SPL-NAND driver with software ECC correction support.
+
    CONFIG_NAND_OMAP_ECCSCHEME
 	On OMAP platforms, this CONFIG specifies NAND ECC scheme.
 	It can take following values:
@@ -292,6 +304,11 @@ Platform specific options
 		Thus BCH16 can be supported on 4K page NAND.
 
 
+    CONFIG_NAND_OMAP_GPMC_PREFETCH
+	On OMAP platforms that use the GPMC controller
+	(CONFIG_NAND_OMAP_GPMC_PREFETCH), this options enables the code that
+	uses the prefetch mode to speed up read operations.
+
 NOTE:
 =====