感觉貌似我的现在nand存在很多问题，求s5p_nand_oob_mlc_512

Try here:
https://github.com/Reggi3/210-nand-patch

specifically:
https://github.com/Reggi3/210-nand-patch/blob/master/s5p_nand_mlc.c#L104

and you can use this code to dump the nand information for you directly:

http://aiothome.net/read.php?tid=28883#234156

I should also point out that you're looking for nand_oob_mlc_512 but the actual ecc/spare/bb offset = < 512b, 448 for the ecclayout, 32b for the oobfree size, 4 for the bad block offset, depending on the nand. so the s5p_nand_oob_mlc_448 = nand_oob_mlc_512

thanks!!!