[U-Boot] [PATCH v2 5/5] cgtqmx6eval: Protect the manufacturing information in SPI NOR

[Otavio Salvador]

On Wed, Sep 23, 2015 at 2:15 PM, Jagan Teki <jteki at openedev.com> wrote:
> On 23 September 2015 at 22:21, Otavio Salvador
> <otavio.salvador at ossystems.com.br> wrote:
>> Hello Jagan,
>>
>> On Wed, Sep 23, 2015 at 12:56 PM, Jagan Teki <jteki at openedev.com> wrote:
>>> All looks fine as per your patches, but probing flash from board files
>>> isn't a good approach if one more board add similar  approach.
>>>
>>> I have an idea similar to "cfi_flash" approach.
>>>
>>> "sf protect on off len" then based on the offset and len write the
>>> protected bits and skips the sectors which are protected by showing
>>> warning say "protected sectors will not be erased!" [1]
>>>
>>> Use the Linux approach[2] for more information, let me know for any more inputs.
>>>
>>> [1] http://www.denx.de/wiki/view/DULG/UBootCmdGroupFlash#Section_5.9.3.4.
>>> [2] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/mtd/devices/m25p80.c?id=972e1b7b450a93589b2a4c709e68f68da059aa5c
>>
>> I think this is a good option however, can we include this one for
>> this release and we can improve it for next?
>
> Do you have any defined schedule on coming release about this feature,
> because right now sf has lot of pending items to tune - I'm unable add
> again this on TODO list that become big task in future.
>
> If you have any time, please start the suggested approach I would help
> at any moment.

We are adding support for a number of different SoM part numbers from
Congatec and the SPI protection is required for we be able to merge
the SPL and 2015.10 to be usable for them.

I can commit to work in this feature for 2016.01.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
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