File systems and Disk on Chips

File systems and Disk on Chips

[Gregg C Levine]

Hello from Gregg C Levine
I have here a 2 Megabyte Disk on Chip device, plugged into a carrier
board. It is now wearing the GRUB based firmware. How when I bring up
my system, the DOC device complains about the lack of a file system.
Any ideas as to how I could put a file system on this device?
Preferably as a native Linux format.
-------------------
Gregg C Levine hansolofalcon@worldnet.att.net
------------------------------------------------------------
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."  Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )

RE: File systems and Disk on Chips

[Gregg C Levine]

(See below)
> -----Original Message-----
> From: linux-mtd-bounces@lists.infradead.org [mailto:linux-mtd-
> bounces@lists.infradead.org] On Behalf Of Gregg C Levine
> Sent: Saturday, July 05, 2003 8:01 PM
> To: linux-mtd@lists.infradead.org
> Subject: File systems and Disk on Chips
> 
> Hello from Gregg C Levine
> I have here a 2 Megabyte Disk on Chip device, plugged into a carrier
> board. It is now wearing the GRUB based firmware. How when I bring
up
> my system, the DOC device complains about the lack of a file system.
> Any ideas as to how I could put a file system on this device?
> Preferably as a native Linux format.
> -------------------
> Gregg C Levine hansolofalcon@worldnet.att.net
> ------------------------------------------------------------
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."  Obi-Wan Kenobi
> (This company dedicates this E-Mail to General Obi-Wan Kenobi )
> (This company dedicates this E-Mail to Master Yoda )
> 
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/

Hello again from Gregg C Levine
Not a reply to myself, a correction. Replace the word, "How" with
"However".
-------------------
Gregg C Levine hansolofalcon@worldnet.att.net
------------------------------------------------------------
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."  Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )

Re: File systems and Disk on Chips

[Russ Dill]

On Sat, 2003-07-05 at 17:00, Gregg C Levine wrote:
> Hello from Gregg C Levine
> I have here a 2 Megabyte Disk on Chip device, plugged into a carrier
> board. It is now wearing the GRUB based firmware. How when I bring up
> my system, the DOC device complains about the lack of a file system.
> Any ideas as to how I could put a file system on this device?
> Preferably as a native Linux format.

Basically, you put a block filesystem on top of NFTL that grub
understands. Grub does not at this point understand YAFFS or JFFS2 on
NAND flash, but I'm sure there a lot of people who are looking for that
and it wouldn't be difficult to do.

-- 
Russ Dill <Russ.Dill@asu.edu>

RE: File systems and Disk on Chips

[Gregg C Levine]

(See below, to honor the hosting list's policies.)
> -----Original Message-----
> From: linux-mtd-bounces@lists.infradead.org [mailto:linux-mtd-
> bounces@lists.infradead.org] On Behalf Of Russ Dill
> Sent: Sunday, July 06, 2003 2:42 AM
> To: Gregg C Levine
> Cc: linux-mtd@lists.infradead.org
> Subject: Re: File systems and Disk on Chips
> 
> On Sat, 2003-07-05 at 17:00, Gregg C Levine wrote:
> > Hello from Gregg C Levine
> > I have here a 2 Megabyte Disk on Chip device, plugged into a
carrier
> > board. It is now wearing the GRUB based firmware. How when I bring
up
> > my system, the DOC device complains about the lack of a file
system.
> > Any ideas as to how I could put a file system on this device?
> > Preferably as a native Linux format.
> 
> Basically, you put a block filesystem on top of NFTL that grub
> understands. Grub does not at this point understand YAFFS or JFFS2
on
> NAND flash, but I'm sure there a lot of people who are looking for
that
> and it wouldn't be difficult to do.
> 
> --
> Russ Dill <Russ.Dill@asu.edu>
> 
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
Hello again from Gregg C Levine
Okay that makes more sense. But now how do I go about creating the "
block filesystem on top of NFTL", that I need to use? 

For example, I've gotten with my test image, as far as creating a
floppy disk image, and booting that, inside the Bochs emulator. It
worked, the test kernel launched, and told me that the kernel did what
it was supposed to do. 

My other problem, is that I still can not get the utilities inside
that directory to properly compile, they always break when trying to
create the ones that manage the JFFS2 stuff. I am hoping that the
snapshot from yesterday has been fixed, but I don't know.
-------------------
Gregg C Levine hansolofalcon@worldnet.att.net
------------------------------------------------------------
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."  Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )

RE: File systems and Disk on Chips

[Russ Dill]

> Okay that makes more sense. But now how do I go about creating the "
> block filesystem on top of NFTL", that I need to use? 

basically use nftl_format with the proper offset, then modprobe nftl,
fdisk /dev/nftla (Optional), mkfs.ext2 /dev/nftla (or nftla1, 2, etc if
fdisked)

> For example, I've gotten with my test image, as far as creating a
> floppy disk image, and booting that, inside the Bochs emulator. It
> worked, the test kernel launched, and told me that the kernel did what
> it was supposed to do. 
> 
> My other problem, is that I still can not get the utilities inside
> that directory to properly compile, they always break when trying to
> create the ones that manage the JFFS2 stuff. I am hoping that the
> snapshot from yesterday has been fixed, but I don't know.

don't know what to say, worked for me, but at this point, I just use
prepackaged binaries from my distro anyway.

-- 
Russ Dill <Russ.Dill@asu.edu>

Re: File systems and Disk on Chips

[Charles Manning]

On Sunday 06 July 2003 18:42, Russ Dill wrote:
> On Sat, 2003-07-05 at 17:00, Gregg C Levine wrote:
> > Hello from Gregg C Levine
> > I have here a 2 Megabyte Disk on Chip device, plugged into a carrier
> > board. It is now wearing the GRUB based firmware. How when I bring up
> > my system, the DOC device complains about the lack of a file system.
> > Any ideas as to how I could put a file system on this device?
> > Preferably as a native Linux format.
>
> Basically, you put a block filesystem on top of NFTL that grub
> understands. Grub does not at this point understand YAFFS or JFFS2 on
> NAND flash, but I'm sure there a lot of people who are looking for that
> and it wouldn't be difficult to do.

There is a YAFFS bootloader in CVS. Integrating into any loader (eg. grub) 
should not be a big effort. estimate less than a day.

-- CHarles

Re: File systems and Disk on Chips

[Russ Dill]

> >
> > Basically, you put a block filesystem on top of NFTL that grub
> > understands. Grub does not at this point understand YAFFS or JFFS2 on
> > NAND flash, but I'm sure there a lot of people who are looking for that
> > and it wouldn't be difficult to do.
> 
> There is a YAFFS bootloader in CVS. Integrating into any loader (eg. grub) 
> should not be a big effort. estimate less than a day.

you haven't touched much grub code, have you?

-- 
Russ Dill <Russ.Dill@asu.edu>

RE: File systems and Disk on Chips

[David Woodhouse]

On Sun, 2003-07-06 at 18:41, Gregg C Levine wrote:
> (See below, to honor the hosting list's policies.)

Gregg, I've asked you about this before. Please see below to see how
your mail _should_ have looked. Perhaps you can count the errors?

Note that in my version you have only quoted the single line (with
appropriate attribution) of Russ's mail to which you are replying, and
you do not add noise to your reply. Your paragraphs are clearly
separated by newlines and not merged together into gratuitously quoted
mailing list footers. Your bizarre signature is correctly separated by
the '-- ' separator.

I am, of course, only addressing the _form_ of your mail here, which
makes me object to its mere presence on my mailing list. If you actually
want me to bother to read it and try to help you, you'd _also_ have to
do basic things like quoting the errors you see rather than describing
them in such vague terms that I can't tell what you're wittering on
about. Perhaps it would have helped to omit the weird paragraph about
Bochs, since I can't see how getting a kernel to boot in an emulator
which doesn't emulate a DiskOnChip could be at all relevant. 

Describe, coherently and concisely, precisely what you have done and
precisely the manner in which it broke. Then we can attempt to help you.
If we haven't spent long enough just trying to get sense out of you in
the first place, that is.

  -------------

On Sun, 2003-07-06 at 07:42, Russ Dill wrote:
> Basically, you put a block filesystem on top of NFTL that grub
> understands. 

Okay that makes more sense. But now how do I go about creating the 
"block filesystem on top of NFTL" that I need to use? 

For example, I've gotten with my test image, as far as creating a
floppy disk image, and booting that, inside the Bochs emulator. It
worked, the test kernel launched, and told me that the kernel did what
it was supposed to do. 

My other problem, is that I still can not get the utilities inside
that directory to properly compile, they always break when trying to
create the ones that manage the JFFS2 stuff. I am hoping that the
snapshot from yesterday has been fixed, but I don't know.

-- 
Gregg C Levine hansolofalcon@worldnet.att.net
------------------------------------------------------------
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."  Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )


  -------------- 
-- 
dwmw2