[U-Boot] issue with 'ubi part'

[Andre Schwarz]

Stefan,
> Hi Andre,
>
> On Wednesday 02 March 2011 16:35:09 Andre Schwarz wrote:
>> actually I have an issue with the "ubi part" command.
>>
>> Situation:
>>
>> MPC8377 based board with 64MiB Nor- (u-boot etc.) and 1GiB Nand-Flash
>> (ubi volume).
>>
>> MTD devices look like this :
>>
>> =>  mtdparts
>>
>> device nor0<NOR>, # parts = 2
>>    #: name                size            offset          mask_flags
>>    0: u-boot              0x00100000      0x00000000      0
>>    1: FPGA                0x00200000      0x00100000      0
>>
>> device nand0<NAND>, # parts = 1
>>    #: name                size            offset          mask_flags
>>    0: root                0x40000000      0x00000000      0
>>
>> active partition: nor0,0 - (u-boot) 0x00100000 @ 0x00000000
>>
>> defaults:
>> mtdids  : nor0=NOR,nand0=NAND
>> mtdparts: mtdparts=NOR:1M(u-boot),2M(FPGA);NAND:-(root)
>> =>
>>
>>
>> Setting the ubi partition to "root" fails :
>>
>> =>  ubi part root
>> Creating 1 MTD partitions on "nand0":
>> 0x000000000000-0x000040000000 : "mtd=0"
>> UBI: attaching mtd2 to ubi0
>> UBI error: io_init: unaligned VID header shift 2
>> UBI error: ubi_init: cannot attach mtd2
>> UBI error: ubi_init: UBI error: cannot initialize UBI, error -22
>> UBI init error -22
>> exit not allowed from main input shell.
>> =>
> Did you erase the flash partition before trying to attach UBI on it?
yes - the ubi volume has been created by linux and is working fine :

ubiformat /dev/NAND -y
ubiattach /dev/ubi_ctrl -m 9
ubimkvol /dev/ubi0 -N rootfs -m
mount -t ubifs ubi0:rootfs /mnt/nand

Actually I'm running Linux with rootfs on this very ubi volume.

All I wanna do is get the kernel + dtb from this volume for stand-alone 
boot.
Meanwhile I'm getting both files using tftp from the server - but that's 
no long term solution.

I'm still curious why we get

0x000000000000-0x000040000000 : "mtd=0"   ->  0 !
and
UBI error: ubi_init: cannot attach mtd2    ->  2 !


Is this the expected behaviour ?


Regards,
André

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