From 80ef700f8df1f85dd3b0880584e2e2a998a9b3dd Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 6 Jun 2016 10:16:58 +0200 Subject: spl: nand: support redundant u-boot image On modern NAND it's more than recommended to have a backup copy of the u-boot binary to recover from corruption: bitflips are quite common on MLC NANDs, and the read-disturbance will corrupt your u-boot partitition more quickly than what you would see on an SLC NAND. Add an extra Kconfig option to specify the offset of the redundant u-boot image. Signed-off-by: Boris Brezillon Acked-by: Hans de Goede [scottwood: added ifdef to fix build break] Signed-off-by: Scott Wood --- common/spl/spl_nand.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'common/spl') diff --git a/common/spl/spl_nand.c b/common/spl/spl_nand.c index 7cf0d1b..0e35e0f 100644 --- a/common/spl/spl_nand.c +++ b/common/spl/spl_nand.c @@ -134,6 +134,13 @@ int spl_nand_load_image(void) #endif /* Load u-boot */ err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS, header); +#ifdef CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND +#if CONFIG_SYS_NAND_U_BOOT_OFFS != CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND + if (err) + err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND, + header); +#endif +#endif nand_deselect(); return err; } -- cgit v1.1