Merge branch 'master' of git://git.denx.de/u-boot-x86

[karo-tx-uboot.git] / doc / README.nand

diff --git a/doc/README.nand b/doc/README.nand
index 96ffc489408853729292bb1818e4af2c355c9df5..f1c20ff645688769a560bb4a4027b92cadd615ff 100644 (file)
--- a/doc/README.nand
+++ b/doc/README.nand
@@ -137,7 +137,7 @@ Configuration Options:
       init:
 
        /* chip is struct nand_chip, and is now provided by the driver. */
-       mtd = &chip.mtd;
+       mtd = nand_to_mtd(&chip);
 
        /*
         * Fill in appropriate values if this driver uses these fields,
@@ -271,7 +271,7 @@ Platform specific options
 
                However, for 4K pagesize NAND
                NAND_PAGESIZE = 4096
-               NAND_OOBSIZE = 64
+               NAND_OOBSIZE = 224
                ECC_BYTES = 26
                2 + (4096 / 512) * 26 = 210 < NAND_OOBSIZE
                Thus BCH16 can be supported on 4K page NAND.
@@ -307,7 +307,7 @@ Miscellaneous and testing commands:
   DANGEROUS!!! Factory set bad blocks will be lost. Use only
   to remove artificial bad blocks created with the "markbad" command.
 
-  "torture offset"
+  "torture offset [size]"
   Torture block to determine if it is still reliable.
   Enabled by the CONFIG_CMD_NAND_TORTURE configuration option.
   This command returns 0 if the block is still reliable, else 1.
@@ -324,6 +324,10 @@ Miscellaneous and testing commands:
   automate actions following a nand->write() error. This would e.g. be required
   in order to program or update safely firmware to NAND, especially for the UBI
   part of such firmware.
+  Optionally, a second parameter size can be given to test multiple blocks with
+  one call. If size is not a multiple of the NAND's erase size, then the block
+  that contains offset + size will be tested in full. If used with size, this
+  command returns 0 if all tested blocks have been found reliable, else 1.
 
 
 NAND locking command (for chips with active LOCKPRE pin)