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* imx6 nand: dbbt version/layout
@ 2021-04-22 12:13 Middelschulte, Leif
  2021-05-03 12:32 ` Sascha Hauer
  0 siblings, 1 reply; 3+ messages in thread
From: Middelschulte, Leif @ 2021-04-22 12:13 UTC (permalink / raw)
  To: barebox


I'm in the process of fixing up imx-kobs to support
- boot configuration dumps
- boot stream extracts/updates
on iMX6QDL using the GPMI-NAND interface, as provided by some more
"recent" kernels.

I updated barebox on the NAND flash storage using another instance of
barebox. Now it turns out that the dbbt version used (i.e. written) by
barebox and supported by imx-kobs (as it was) is not documented in the
i.MX6 QDL reference manual.
Barebox uses[0] DBBT version 0x1000000, while the reference manual
describes (i.MX6DQRM Rev 3., section layout version 0x1.

Besides that, the reference manual apparently does not describe the
field `BBMarkerPhysicalOffsetInSpareData` at the end of the FCB
structure. Yet again, imx-kobs and barebox are reading/writing it.

So I'm wondering which behavior is correct?


Best regards,

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2021-04-22 12:13 imx6 nand: dbbt version/layout Middelschulte, Leif
2021-05-03 12:32 ` Sascha Hauer
2021-06-11 15:16   ` Middelschulte, Leif

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