[U-Boot] [MX51EVK] u-boot ECC errors flashing NAND

[Jason Liu]

Hi, Tiago Maluta,

2011/1/10 Tiago Maluta <tiago.maluta at gmail.com>:
> Hi,
>
> I'm facing ECC errors when flashing u-boot on NAND on MX51EVK-based
> board. U-Boot "nand write" command doesn't fill out-of-band (OOB)
> bytes correctly. I noted this behavior after compare the same
> u-boot.bin image flashed via ATK (proprietary software from
> Freescale). I guess is something related to ECC timing.
>
> my logs:
> http://farm6.static.flickr.com/5130/5320148028_7da19d3cf2_o.png
> http://www.coding.com.br/wp-content/uploads/2011/01/nand-dump-fail.txt
> http://www.coding.com.br/wp-content/uploads/2011/01/nand-dump-ok.txt

I have looked at your log and it turns out that the issued is caused that BI
SWAP unbalance when you do NAND read and write. BI SWAP is used to
keep the NAND bad block indicator out of factory, otherwise, the bad block
indicator will be overwritten with user data.

BR,
Jason

>
> --tm
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