int ynandif_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber);
int ynandif_InitialiseNAND(struct yaffs_dev *dev);
int ynandif_MarkNANDBlockBad(struct yaffs_dev *dev,int blockNumber);
int ynandif_EraseBlockInNAND(struct yaffs_dev *dev, int blockNumber);
int ynandif_InitialiseNAND(struct yaffs_dev *dev);
int ynandif_MarkNANDBlockBad(struct yaffs_dev *dev,int blockNumber);