[OpenWrt-Devel] Netgear R6260 EEPROM location

[Piotr Dymacz]

Hi David,

On 30.01.2020 12:36, David Bauer wrote:
> Hello again,

[...]

>> So I'm waiting on feedback from other owners of these boards and using this
>> (more or less) strange fix in the meantime.
> 
> Robert complained in the meantime, that my fix broke his R6260. He also sent me
> the partition map of the stock firmware and it differs from mine (see below).

[...]

> I'm still waiting for him to send ma a photo of the routers backside, but it seems
> we have to dynamically detect the partition map of the devices. I'll look into the
> SC_PART_MAP partition and the routers GPL code to find a possible solution for this
> problem.

There was some work with custom 'SC_PART_MAP' mtd parser back in 2018 
but mapping used in vendor firmware didn't match what was in flash, see: 
[0] and also [1] about 'different' R6220 models.

Added also Mathias and Chuanhong to the loop.

[0] https://github.com/openwrt/openwrt/pull/1318#issuecomment-419628452
[1] https://github.com/openwrt/openwrt/pull/1304

-- 
Cheers,
Piotr

> 
> In the meantime, I'll revert my "fix" to not break existing boards.
> 
> For the record: I assume this bug has nothing to do with the partition shifting
> seen on the R6220, as the offending "feature" of the mtknand driver was disabled
> in the meantime (and the partition map differs in the stock firmware). [0]
> 
> [0] https://github.com/openwrt/openwrt/pull/1304
> 
> Best wishes
> David
> 
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> 


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