[U-Boot] [PATCHv2] ARM: at91: atmel_nand: Support flash based BBT

[David Dueck]

Add support for on-flash bad block table. This makes U-Boot handle an existing
BBT correctly.

Signed-off-by: David Dueck <davidcdueck at googlemail.com>
Reviewed-by: Boris BREZILLON <boris.brezillon at free-electrons.com>
CC: Boris BREZILLON <boris.brezillon at free-electrons.com>
CC: Josh Wu <josh.wu at atmel.com>
CC: Andreas Bießmann <andreas.devel at googlemail.com>
CC: Scott Wood <scottwood at freescale.com>
---
Changes since v1:
- improve commit message
- add Reviewed-by tag

 drivers/mtd/nand/atmel_nand.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index b16e3aa..a2016e7 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -1456,6 +1456,9 @@ int board_nand_init(struct nand_chip *nand)
 	nand->dev_ready = at91_nand_wait_ready;
 #endif
 	nand->chip_delay = 20;
+#ifdef CONFIG_SYS_NAND_USE_FLASH_BBT
+	nand->bbt_options |= NAND_BBT_USE_FLASH;
+#endif
 
 #ifdef CONFIG_ATMEL_NAND_HWECC
 #ifdef CONFIG_ATMEL_NAND_HW_PMECC
@@ -1522,6 +1525,9 @@ int atmel_nand_chip_init(int devnum, ulong base_addr)
 	nand->dev_ready = at91_nand_ready;
 #endif
 	nand->chip_delay = 75;
+#ifdef CONFIG_SYS_NAND_USE_FLASH_BBT
+	nand->bbt_options |= NAND_BBT_USE_FLASH;
+#endif
 
 	ret = nand_scan_ident(mtd, CONFIG_SYS_NAND_MAX_CHIPS, NULL);
 	if (ret)
-- 
2.3.0