I guess you are asking about the Firmware Configuration Block (FCB) and the Discovered Bad Block Table (DBBT) of the NAND controller.
As we do not provide the NAND controller we do not have the data, the data might be available in the controller datasheet.
Also, to recognize initial bad blocks in NAND flash, below KBA might be helpful.
As mentioned in the KBA and also in datasheet, Cypress SLC NAND products may contain factory bad blocks when shipped.
Any block where the 1st byte in the spare area of the 1st or 2nd or last page does not contain FFh is a Bad Block.
More reference regarding NAND Flash Bad Blocks:
Let me know if you need further clarification.