UBI and OneNAND

[박경민 <kyungmin.park@samsung.com>]

Hi,

Sorry for changing subject. My mail program has some problem.

> > I think the following commands just worked:
> > 
> >   mkdir /mnt/nvm
> >   flash_eraseall /dev/mtd6
> >   mount -t jffs2 /dev/mtdblock6 /mnt/nvm 
> > 
> > 
> > I wonder whether this is the first attempt to run a kernel using
> > jffs2 and ubi and mtd and onenand and mips? First or not, it seems to work. 

> Yes, it is.  For both onenand and MIPS.  That is good news.  Thanks for
> testing!

Umm. I think 'John' just mounts jffs2 without UBI.

I also tried but I can't mount jffs2

It is my sequence.

# mkdir -p /mnt
# insmod ubi.ko mtd=3

UBI: attached mtd3 to ubi0
UBI: MTD device name:            "rootfs"
UBI: MTD device size:            16 MB
UBI: physical eraseblock size:   131072 bytes (128 KB)
UBI: logical eraseblock size:    126976 bytes
UBI: number of good PEBs:        127
UBI: number of bad PEBs:         1
UBI: smallest flash I/O unit:    2048
UBI: VID header offset:          2048 (aligned 2048)
UBI: data offset:                4096
UBI: max. allowed volumes:       124
UBI: wear-levelling threshold:   4096
UBI: number of internal volumes: 2
UBI: number of user volumes:     0
UBI: available PEBs:             122
UBI: total number of reserved PEBs: 5
UBI: number of PEBs reserved for bad PEB handling: 1

# mount -t jffs2 /dev/mtdblock3 /mnt

/ # mount -t jffs2 /dev/mtdblock3 /tmp
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x4255 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000004: 0x0001 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000003c: 0xcedc id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000800: 0x4255 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000804: 0x0101 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000808: 0xff7f id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000083c: 0x25b8 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000010a8: 0x16f1 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00001154: 0x16f1 id
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00001200: 0x16f1 id
...
Cowardly refusing to erase blocks on filesystem with no valid JFFS2 nodes
empty_blocks 0, bad_blocks 1, c->nr_blocks 128
mount: Mounting /dev/mtdblock3 on /tmp failed: Input/output error

Is it right?

Of course. JFFS2 mount without UBI working well.

Thank you,
Kyungmin Park