Nand MTD IOError -5

[Kamel BOUHARA]

Hello,

Im having a trouble with my Nand Flash device wich is a 512MiB Micron with
4GB capacity.
I get io error -5 for any erase/write operation on it like this :

 barebox at Phytec phyCard-i.MX27:/ update -t barebox -d nand

phy0: Link is up - 100/Full

host 192.168.0.2 is alive


> erasing partition /dev/nand0.barebox.bb
>


>

erase: I/O error
>


>

flashing barebox.bin to /dev/nand0.barebox.bb
>


>

TFTP from server 192.168.0.2 ('barebox.bin' -> '/dev/nand0.barebox.bb')
>

        write: I/O error
>


>

tftp failed: error -5


And here is the device init at the boot runtime:

NAND device: Manufacturer ID: 0x2c, Chip ID: 0xac (Micron NAND 512MiB 1,8V
8-bi)
Bad block table found at page 262080, version 0x01

Bad block table found at page 262016, version 0x01

nand_read_bbt: Bad block at 0x01ac0000

nand_read_bbt: Bad block at 0x01ae0000

nand_read_bbt: Bad block at 0x01b40000

nand_read_bbt: Bad block at 0x01b60000

nand_read_bbt: Bad block at 0x02bc0000

nand_read_bbt: Bad block at 0x02be0000

nand_read_bbt: Bad block at 0x03240000

nand_read_bbt: Bad block at 0x03260000

nand_read_bbt: Bad block at 0x033c0000

nand_read_bbt: Bad block at 0x033e0000

nand_read_bbt: Bad block at 0x03f40000

nand_read_bbt: Bad block at 0x03f60000

nand_read_bbt: Bad block at 0x03fc0000

nand_read_bbt: Bad block at 0x03fe0000

nand_read_bbt: Bad block at 0x057c0000

nand_read_bbt: Bad block at 0x057e0000

nand_read_bbt: Bad block at 0x05ac0000

nand_read_bbt: Bad block at 0x05ae0000

nand_read_bbt: Bad block at 0x05bc0000

nand_read_bbt: Bad block at 0x05be0000

nand_read_bbt: Bad block at 0x07440000

nand_read_bbt: Bad block at 0x07460000

nand_read_bbt: Bad block at 0x078c0000

nand_read_bbt: Bad block at 0x078e0000

nand_read_bbt: Bad block at 0x07cc0000

nand_read_bbt: Bad block at 0x07ce0000

nand_read_bbt: Bad block at 0x134c0000

nand_read_bbt: Bad block at 0x134e0000

nand_read_bbt: Bad block at 0x14940000

nand_read_bbt: Bad block at 0x14960000

nand_read_bbt: Bad block at 0x15540000

nand_read_bbt: Bad block at 0x15560000

nand_read_bbt: Bad block at 0x15ac0000

nand_read_bbt: Bad block at 0x15ae0000

nand_read_bbt: Bad block at 0x17140000

nand_read_bbt: Bad block at 0x17160000

nand_read_bbt: Bad block at 0x17840000

nand_read_bbt: Bad block at 0x17860000

nand_read_bbt: Bad block at 0x1f0c0000

nand_read_bbt: Bad block at 0x1f0e0000

nand_read_bbt: Bad block at 0x1f6c0000

nand_read_bbt: Bad block at 0x1f6e0000

So it seems tge device is detect and bbt are correctly calculated...
Any idea of what could be the problem ?

Regards.

-- 
__________________________________
*Kamel BOUHARA*
7 rue Jules César
02100 SAINT-QUENTIN
06.17.83.29.04
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