Suggestions for using a DoC with Linux and a 2.4.20 kernel

[Russ Dill]

On Mon, 2003-03-10 at 15:04, Gregg C Levine wrote:
> Hello from Gregg C Levine
> I have a statement to make, then the question
> Okay here's the statement:
> I have a system running that was freshly installed, and I have a
> kernel being built from fresh source code. This is an unpatched 2.4.20
> kernel.
> 
> Now the question:
> How do I go about setting things up, so that the kernel can see the
> DoC on startup, and then work with it? I have turned on the MTD
> settings in the kernel, and for the DoC driver as well.
> I can supply further information, including name of distribution, and
> even supplier of DoC, as well, if needed. 

are you using the modules? or is it build into the kernel?

modules:

modprobe doc2000
modprobe doc_probe (at this point it should identify the doc)

then load whatever you need to talk to the doc, like mtdchar, mtdblock,
nftl, etc

If its built into the kernel, it should detect on boot.

if you are using nftl, you should have access to it at /dev/nftla, and
the partitions at /dev/nftla1, /dev/nftla2, etc. nftl is a transition
layer that makes NAND flash look like a normal block device. It does
wear leveling, bad sector handling, partial writes, etc so that things
like ext2 and vfat can exist on the NAND flash.

Most of the mtd utils will talk to it via the char device, /dev/mtd0,
such as doc_loadbios (usually for installing grub), erase, nftl_format,
etc

If you are using jffs2 on NAND (I'm not sure about this one, because
I've never tried it) you probably want /dev/mtdblock0.

Additional info would probably be helpful, like what steps you are
taking, and what messages you are getting.