From da78fb541494ac778a0fe66cc02e2fea33e228d9 Mon Sep 17 00:00:00 2001
From: David Dueck <davidcdueck@googlemail.com>
Date: Fri, 20 Mar 2015 10:52:49 +0100
Subject: [PATCH] ARM: at91: atmel_nand: Support flash based BBT
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Add support for on-flash bad block table. This makes U-Boot handle an existing
BBT correctly.

Signed-off-by: David Dueck <davidcdueck@googlemail.com>
Reviewed-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
CC: Boris BREZILLON <boris.brezillon@free-electrons.com>
CC: Josh Wu <josh.wu@atmel.com>
CC: Andreas Bießmann <andreas.devel@googlemail.com>
CC: Scott Wood <scottwood@freescale.com>
Acked-by: Josh Wu <josh.wu@atmel.com>
---
 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 b16e3aa157..a2016e7945 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)
-- 
2.25.1