linux-kernel - Re: [RFC PATCHv2 1/4] drivers/otp: add initial support for OTP memory

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AANLkTinitGMYSfeDmip_2MTmCLOtKqMoN+WbskhmeNi3@mail.gmail.com>
Date:	Fri, 25 Mar 2011 18:36:25 -0400
From:	Mike Frysinger <vapier@...too.org>
To:	Jamie Iles <jamie@...ieiles.com>
Cc:	linux-kernel@...r.kernel.org, gregkh@...e.de
Subject: Re: [RFC PATCHv2 1/4] drivers/otp: add initial support for OTP memory

On Fri, Mar 25, 2011 at 18:27, Jamie Iles wrote:
> On Fri, Mar 25, 2011 at 05:32:54PM -0400, Mike Frysinger wrote:
>> On Fri, Mar 25, 2011 at 06:08, Jamie Iles wrote:
>> > I guess in this framework we could make the OTP look like a single
>> > region of the 0x80 data pages concatenated or provide separate regions
>> > for each group of 0x80 pages but the control and ECC pages aren't
>> > directly accessible by the user.
>>
>> well, in the current driver, i let people dump the ECC.  for
>> debugging, i think that's valuable.
>
> Hmm, that does sound potentially useful.  In v3 I've created a single
> partition that excludes the control bits and the ecc.  How about I
> change that for the next spin so there are two partitions where the
> first contains the raw data and the second is all of the ECC lumped
> together.  It may also be useful to have a name attribute for each
> region to make this clear.

this does sound useful.  on Blackfin parts, we've already dedicated
specific pages to specific functions.  so if there was a name
attribute to each region, i could potentially make each one a region.
-mike

Download attachment "otp-map.png" of type "image/png" (159260 bytes)