DOC problems on PowerPC

DOC problems on PowerPC

[Felix Radensky]

Hi, all

I was able to solve the DOC problems on PowerPC I've reported yesterday.

All I had to do is to run "eraseall /dev/mtd0", then run "nftl_format
/dev/mtd0"
and  then create partitions with fdisk.

Can someone please explain me the difference between eraseall and
nftl_format.
HOWTO says nothing about it.

By the way, the latest mtd code would not compile, at least on my 2.4.2
kernel
unless you add #include <linux/kmod.h> to chipreg.c.  This is because of

a call to request_module() in do_map_probe(), which IMHO should be
under #ifdef CONFIG_KMOD, and not #ifdef CONFIG_MODULES.

Re: DOC problems on PowerPC

[Shuh C Chang]

> All I had to do is to run "eraseall /dev/mtd0",

Is "eraseall" equivalent to the DOS utility "docpmap /e" in functionality?
Anyone who can shed some light?

Shuh Chang


----- Original Message -----
From: "Felix Radensky" <felix@allot.com>
To: "Linux-mtd" <linux-mtd@lists.infradead.org>
Sent: Monday, May 14, 2001 9:13 AM
Subject: DOC problems on PowerPC


> Hi, all
>
> I was able to solve the DOC problems on PowerPC I've reported yesterday.
>
> All I had to do is to run "eraseall /dev/mtd0", then run "nftl_format
> /dev/mtd0"
> and  then create partitions with fdisk.
>
> Can someone please explain me the difference between eraseall and
> nftl_format.
> HOWTO says nothing about it.
>
> By the way, the latest mtd code would not compile, at least on my 2.4.2
> kernel
> unless you add #include <linux/kmod.h> to chipreg.c.  This is because of
>
> a call to request_module() in do_map_probe(), which IMHO should be
> under #ifdef CONFIG_KMOD, and not #ifdef CONFIG_MODULES.
>
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
>

Re: DOC problems on PowerPC

[Ollie Lho]

Felix Radensky wrote:
> 
> Hi, all
> 
> I was able to solve the DOC problems on PowerPC I've reported yesterday.
> 
> All I had to do is to run "eraseall /dev/mtd0", then run "nftl_format
> /dev/mtd0"
> and  then create partitions with fdisk.
> 
> Can someone please explain me the difference between eraseall and
> nftl_format.
> HOWTO says nothing about it.
> 

For flash devices either NOR type or NAND type. You can only turn
each bits for 1 state to 0 by a "write" command. If you want to
turn a bit from 0 to 1, you have to erase the device. Each device
has its onw minimal erase size i.e. if you want to erase onely 1 byte
in a erase region, you have to erase the whole erase region.

The nftl_format is used somewht like "low-level" format for old
HDs. 

Ollie