Boards with bad NAND flash
Posted: Tue Sep 15, 2009 5:56 pm
I have 2 out of 3 boards which have errors when you run bon part 0 320k 2368K on them? What is your experience with bad NAND flash on your board?
"bad" nand is normal, it's really NAND, they guarantee the first block, but not the others -- thats why there are ECC (Error Correction Code) attached to each blocks, to be able to guarantee and (possibly) correct some of the bit errors.
if you use u-boot, you can write data in a "ecc friendly" that that will read & write data, skipping the bzf blocks automaticaly.