[U-Boot] UBI on NAND flash again

[Daniel Mack <daniel@caiaq.de>]

I know there has been some traffic regaring the UBI layer recently,
however, reading the conversations didn't solve the issue I'm facing.

With a current U-Boot (git as of today) and 128MB NAND flash on a
PXA303, I get the following:

$ mtdparts

device nand0 <nand0>, # parts = 5
 #: name		size		offset		mask_flags
 0: u-boot              0x00080000	0x00000000	0
 1: env                 0x00020000	0x00080000	0
 2: splash              0x00060000	0x000a0000	0
 3: kernel              0x00300000	0x00100000	0
 4: ubilayer            0x07c00000	0x00400000	0

active partition: nand0,0 - (u-boot) 0x00080000 @ 0x00000000

defaults:
mtdids  : nand0=nand0
mtdparts: mtdparts=nand0:512k(u-boot),128k(env),384k(splash),3M(kernel),-(ubilayer)
$ ubi part ubilayer
Creating 1 MTD partitions on "nand0":
0x00400000-0x08000000 : "mtd=4"
UBI: attaching mtd1 to ubi0
UBI: physical eraseblock size:   131072 bytes (128 KiB)
UBI: logical eraseblock size:    126976 bytes
UBI: smallest flash I/O unit:    2048
UBI: VID header offset:          2048 (aligned 2048)
UBI: data offset:                4096
UBI error: ubi_init: cannot attach mtd1
UBI error: ubi_init: UBI error: cannot initialize UBI, error -12
UBI init error -12
exit not allowed from main input shell.


What puzzles me is this 'UBI: attaching mtd1 to ubi0' - shouldn't that
be 'mtd4'?

The same layout works well under Linux, btw.

Any hints?

Daniel