But what about the bad block markers , do they get erased when you write this U-Boot image into the NAND ?
The image includes OOB data, because the rom-mandated map is different from normal standards. If OOB is zeroed, blocks appear as bad (correctly!).
By memsetting to 0xff, before filling data structures and checksums, we get a binary that written with "nand write.raw" works properly (the rom is happy with the format and boots) but doesn't mark blocks as bad.
[actually, only the first half-a-meg is with-oob, the trailing part is not, and the image is partly written with "nand write.raw" and partly with "nand write". Hairy things based on hairy vendor choices in hw/rom]
But tools/mxsboot works fine, and saved my day (or more).
thanks /alessandro