From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Herrmann <THerrmann@ADwin.de>
Date: Mon, 17 Feb 2014 13:22:54 +0100
Subject: [U-Boot] ECC/OOB question for kwbimage/openrd
Message-ID: <5301FF1E.5000502@ADwin.de>
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To: u-boot@lists.denx.de

I am using a kirkwood-based CPU and u-boot 2013.07 (problem is probably
not specific to the u-boot version).

When I program u-boot using jtag, I use the "oob_softecc_kw" option to
write the image. U-boot boots fine and the bootROM register of the CPU
shows no ECC errors.

When I flash the bootloader in u-boot (standard "nand write"), the wrong
ECC algorithm is used, and the bootROM shows ECC errors (but u-boot
boots fine as long as no bits flip in the flash).

I have already tried NAND_ECC_MODE default, rs and hamming in mkimage,
with no success.

I guess I could read out the oob data with the correct ecc checksums
from the image written by jtag and then use u-boots write.oob to flash
the bootloader, but that seems to be an ugly workaround.

Any ideas?

Regards
Thomas