[U-Boot] UBI on NAND flash again

[Stefan Roese]

On Thursday 04 June 2009 10:06:55 Daniel Mack wrote:
> > I have to admit that I never used it this way. Using "ubi part" on an
> > erased partition works fine. I suggest you give it a try.
>
> Hmm. That still doesn't work for me, and I still wonder about the
> 'attaching mtd1 to ubi0' string, which looks like a mismatch to me.

I would have to check in more details here. But I'm pretty sure this is not 
the reason for your failure. Here a log from one of mine UBI systems:

=> mtdparts               

device nand0 <nand>, # parts = 6
 #: name                size            offset          mask_flags
 0: u-boot              0x00080000      0x00000000      0         
 1: env                 0x00040000      0x00080000      0         
 2: kernel              0x00200000      0x000c0000      0         
 3: rootfs              0x01000000      0x002c0000      0         
 4: fs                  0x02000000      0x012c0000      0         
 5: ubifs               0x04d40000      0x032c0000      0         

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

defaults:
mtdids  : nand0=nand
mtdparts: mtdparts=nand:512k(u-
boot),256k(env),2m(kernel),16m(rootfs),32m(fs),-(ubifs)
=> nand erase 2c0000 1000000                                                          

NAND erase: device 0 offset 0x2c0000, size 0x1000000
Skipping bad block at  0x004e0000
Erasing at 0x12a0000 -- 100% complete.
OK
=> ubi part rootfs
Creating 1 MTD partitions on "nand0":
0x002c0000-0x012c0000 : "mtd=3"
UBI: attaching mtd1 to ubi0
UBI: physical eraseblock size:   131072 bytes (128 KiB)
UBI: logical eraseblock size:    129024 bytes
UBI: smallest flash I/O unit:    2048
UBI: sub-page size:              512
UBI: VID header offset:          512 (aligned 512)
UBI: data offset:                2048
UBI: empty MTD device detected
UBI: create volume table (copy #1)
UBI: create volume table (copy #2)
UBI: attached mtd1 to ubi0
UBI: MTD device name:            "mtd=3"
UBI: MTD device size:            16 MiB
UBI: number of good PEBs:        127
UBI: number of bad PEBs:         1
UBI: max. allowed volumes:       128
UBI: wear-leveling threshold:    4096
UBI: number of internal volumes: 1
UBI: number of user volumes:     0
UBI: available PEBs:             121
UBI: total number of reserved PEBs: 6
UBI: number of PEBs reserved for bad PEB handling: 2
UBI: max/mean erase counter: 0/0
=>

> Any idea?

Sorry, no. You need to further debug this problem to see where the failure is 
generated.

Best regards,
Stefan

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