[PATCH] mtd: gpmi: make blockmark swapping optional

[Lothar Waßmann]

Hi,

Huang Shijie wrote:
> 于 2014年03月20日 17:21, Lothar Waßmann 写道:
> > Hi,
> >
> > Huang Shijie wrote:
> >> 于 2014年03月19日 21:23, y at karo-electronics.de 写道:
> >>> configurable via DT. This is required for the Ka-Ro electronics
> >>> platforms.
> >>>
> >> If you disable the swapping, you will disable the NAND boot in actually.
> >>
> > No. All our modules do boot from NAND and none of them does the
> > swapping.
> >
> >
> It seems the NAND boot runs well by luck.
> 
> The ROM will do the swapping when it reads the BBT table written by the 
> kobs-ng (or something else?).
> 
This can be disabled by parameter in the FCB (at least according to
the i.MX6 reference Manual):
|DISBBM 172 4 If 0 ROM will swap BadBlockMarkerByte with
|             metadata[0] after reading a page using BCH40.
|             If the value set is 1 then ROM will not do
|             swapping


Lothar Waßmann
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