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SubjectRe: [PATCH] mtd: gpmi: make blockmark swapping optional
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@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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Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen
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www.karo-electronics.de | info@karo-electronics.de
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