NAND_BBM_LASTPAGE
NAND_BBM_LASTPAGE;
| NAND_BBM_LASTPAGE;
if (page <= last_page && chip->options & NAND_BBM_LASTPAGE)
NAND_BBM_LASTPAGE;
chip->options |= NAND_BBM_LASTPAGE;
chip->options |= NAND_BBM_LASTPAGE;