[U-Boot] Q: nand usage

ran shalit ranshalit at gmail.com
Fri Mar 18 19:54:43 CET 2011




wd wrote:
> 
> 
>> I think my question was not very well expressed. I ment to ask about the
>> mapping of the partitions inside the NAND: Does each partitions need some
>> spare blocks (padding block) becuase of the bad block skipping in the
>> Nand ?
>> As I said, I did not find any information about the strategy of mapping
>> partitions in the Nand. 
> 
> As you are talking about partitions, I assume you refert to the MTD
> partitioning.  In this case the bad block handling needs to be done in
> by the file system code, when you create a file system insinde one of
> the partitions.
> 
> [Note that this differs from UBI, where bad block handling is done for
> the whole device, independent of the volumes that you create on top of
> it.]
> 
> 

Sorry, I probably use the wrong terms in my question. I do not mean
partition using file system,
but just saving files using the u-boot interface, for example saving the
kernel file in some space in the NAND and for the u-boot file in another
space in the NAND, and all done with the given write command in the uboot
(nand write...). And again with this u-boot interface I still need some
strategy for deciding where to put each file.

Thanks again,

Ran
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