[U-Boot] UBI on NAND flash again

[U-Boot] UBI on NAND flash again

[Daniel Mack]

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

[U-Boot] UBI on NAND flash again

[Stefan Roese]

On Wednesday 03 June 2009 20:05:51 Daniel Mack wrote:
> 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.

Did you erase the FLASH partition? If not please try again after erasing.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] UBI on NAND flash again

[Daniel Mack]

On Thu, Jun 04, 2009 at 08:42:40AM +0200, Stefan Roese wrote:
> > 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.
> 
> Did you erase the FLASH partition? If not please try again after erasing.

I used ubiformat from Linux using /dev/ubi0 which is attached to
/dev/mtd4 which again points to the same area in the flash than
'ubilayer' does in U-Boot. So I should be able to access that same
volume from the bootloader, right? Or do I miss some important point?

Thanks,
Daniel

[U-Boot] UBI on NAND flash again

[Stefan Roese]

On Thursday 04 June 2009 08:50:21 Daniel Mack wrote:
> > > 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.
> >
> > Did you erase the FLASH partition? If not please try again after erasing.
>
> I used ubiformat from Linux using /dev/ubi0 which is attached to
> /dev/mtd4 which again points to the same area in the flash than
> 'ubilayer' does in U-Boot. So I should be able to access that same
> volume from the bootloader, right? Or do I miss some important point?

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.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] UBI on NAND flash again

[Daniel Mack]

On Thu, Jun 04, 2009 at 08:56:51AM +0200, Stefan Roese wrote:
> On Thursday 04 June 2009 08:50:21 Daniel Mack wrote:
> > > > 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.
> > >
> > > Did you erase the FLASH partition? If not please try again after erasing.
> >
> > I used ubiformat from Linux using /dev/ubi0 which is attached to
> > /dev/mtd4 which again points to the same area in the flash than
> > 'ubilayer' does in U-Boot. So I should be able to access that same
> > volume from the bootloader, right? Or do I miss some important point?
> 
> 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.

Any idea?

Thanks,
Daniel


$ 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)

$ nand erase 0x00400000 0x07c00000

NAND erase: device 0 offset 0x400000, size 0x7c00000
Erasing at 0x7fe0000 -- 100% complete.
OK
$ 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.

[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

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] UBI on NAND flash again

[Wolfgang Denk]

Dear Stefan Roese,

In message <200906041015.30536.sr@denx.de> you wrote:
>
> 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:
...
> => ubi part rootfs
> Creating 1 MTD partitions on "nand0":
> 0x002c0000-0x012c0000 : "mtd=3"
> UBI: attaching mtd1 to ubi0

But then this is a bug that definitely needs to be fixed. Especially
when bringing up such a system such misleading output is unacceptable.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
This is an unauthorized cybernetic announcement.

[U-Boot] UBI on NAND flash again

[Daniel Mack]

On Thu, Jun 04, 2009 at 10:15:30AM +0200, Stefan Roese wrote:
> > 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:

Oh well - you're right. The code failed in vmalloc() due to a too small
CONFIG_SYS_MALLOC_LEN which I needed to augment to 512kB.

The 'mtd1' totally mislead me. Sorry for the noise, and thanks for your
help :)

Daniel

[U-Boot] UBI on NAND flash again

[Stefan Roese]

On Thursday 04 June 2009 11:07:40 Daniel Mack wrote:
> On Thu, Jun 04, 2009 at 10:15:30AM +0200, Stefan Roese wrote:
> > > 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:
>
> Oh well - you're right. The code failed in vmalloc() due to a too small
> CONFIG_SYS_MALLOC_LEN which I needed to augment to 512kB.

Yes, you're not the first person to stumble over this malloc problem. :)

I'll add some #warning/#error to the code to warn the user if such a mis-
configuration is happening.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] UBI on NAND flash again

[Wolfgang Denk]

Dear Daniel Mack,

In message <20090604090740.GD26688@buzzloop.caiaq.de> you wrote:
>
> Oh well - you're right. The code failed in vmalloc() due to a too small
> CONFIG_SYS_MALLOC_LEN which I needed to augment to 512kB.

But then a big, fat error message is needed there!

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
You're too beautiful to ignore.  Too much woman.
	-- Kirk to Yeoman Rand, "The Enemy Within", stardate unknown

[U-Boot] UBI on NAND flash again

[Daniel Mack]

On Thu, Jun 04, 2009 at 11:27:07AM +0200, Wolfgang Denk wrote:
> >
> > Oh well - you're right. The code failed in vmalloc() due to a too small
> > CONFIG_SYS_MALLOC_LEN which I needed to augment to 512kB.
> 
> But then a big, fat error message is needed there!

In vmalloc(), yes. That bug could hit any code that deals with
dynamically allocated memory.

Daniel

[U-Boot] UBI on NAND flash again

[Wolfgang Denk]

Dear Stefan Roese,

In message <200906040856.51774.sr@denx.de> you wrote:
>
> > I used ubiformat from Linux using /dev/ubi0 which is attached to
> > /dev/mtd4 which again points to the same area in the flash than
> > 'ubilayer' does in U-Boot. So I should be able to access that same
> > volume from the bootloader, right? Or do I miss some important point?
> 
> 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.

But that seems a perfectly valid, and actually pretty resonable test
szenario. I think you should include this in your tests.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Keep your eyes wide open before marriage, half shut afterwards.
                                                 -- Benjamin Franklin