mtd, jffs and bootloader..

mtd, jffs and bootloader..

[vijay vijay]

Hi Friends,

Looks like either they are very dumb questions or haev been
answered many many times already. Since am still unable to
find answer to my queries, am reposting..pls help me out.
Sorry for posting the querries again.

1. Can I put my bootloader in a seperate partition say mtd0 ?.
2. Since its my home built bootloader, am not sure how to tell
ffs about its location.( Will it matter?.) Am scared that the
partition table / any ffs data struct may overwrite bootloader
and if that happens, don't have any tool to reflash and bring
up the board.
3.Am unable to locate any detailed text on cramfs. Can you
suggest one?.

thanks and regards,
Vijay

>
>-----Original Message-----
>From: vijay vijay [mailto:vijay_peshkar@hotmail.com]
>Sent: Friday, October 11, 2002 4:45 PM
>To: linux-mtd@lists.infradead.org
>Cc: vijay.peshkar@wirpo.com
>Subject: my bootloader and mtd / cramfs
>
>
>Hi Friends,
>
>Few queries..
>1. Is there any documentation availible on cramfs?. Couldn't find any thru 
>google, though saw lot of mail discussions?.
>2. Want to use an inhouse built bootloader on my board. How to ensure that 
>the ffs(jffs2 / cramfs) and mtd do not write to it(say partition tables 
>etc.,)?.
>3. Can I use FFS on only a certain part of flash and the rest as raw
>(say) for storing my image?.
>
>Regards,
>Vijay


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Re: mtd, jffs and bootloader..

[David Woodhouse]

vijay_peshkar@hotmail.com said:
>  1. Can I put my bootloader in a seperate partition say mtd0 ?.

Yes.

?  2. Since its my home built bootloader, am not sure how to tell ffs about
> its location.( Will it matter?.) Am scared that the partition table /
> any ffs data struct may overwrite bootloader and if that happens,
> don't have any tool to reflash and bring up the board.

Please explain which part of the existing partition code for other boards 
you have looked at, and which part is still unclear.

> 3.Am unable to locate any detailed text on cramfs. Can you suggest one?.

linux/Documentation/filesystems/cramfs.txt

--
dwmw2

Re: mtd, jffs and bootloader..

[vijay vijay]

Typo - Differences compared to the 2.4.18 redhat version. Struct 
super_block..

regards,
vijay

Hi,

Am having montavista's PPC kernel version 2.2. There seem to be lot of
changes between the code(cramfs/inode.c and fs.h - super_lock). Any pointers
on getting patch(es?) for mtd, cramfs etc.,?.

Thanks and Regards,
Vijay


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