El Sun, Feb 22, 2009 at 08:37:15PM +0100 Matthias Kaehlcke ha dit:
> Hi Robert,
>
> El Sun, Feb 22, 2009 at 02:02:12PM -0500 Robert P. J. Day ha dit:
>
> >
> > i'm sure i could verify this by RTFS but i've had a long week and
> > i'm feeling lazy so ... is it true that i can protect an MTD partition
> > from accidental overwriting by defining it in the map file with the
> > MAP_WRITEABLE flag?
>
> i suppose you mean MTD_WRITEABLE
>
> > and having done that, the only way to change that partition would be
> > to use flash_unlock, write it, then flash_lock it again? as in,
> > defining it with MAP_WRITEABLE is *exactly* equivalent to having
> > locked it initially. or does that MAP_WRITEABLE mask flag mean
> > something different? thanks.
>
> afaik the flag MTD_WRITEABLE marks a partition as writable at kernel
> level (eg by marking it as 'ro' on the kernel command line)
~~
this marks the partition certainly as *read-only*, but i think you
understand what i mean ;)
--
Matthias Kaehlcke
Embedded Linux Engineer
Barcelona
El trabajo es el refugio de los que no tienen nada que hacer
(Oscar Wilde)
.''`.
using free software / Debian GNU/Linux | http://debian.org : :' :
`. `'`
gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `-
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