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authorBoris Brezillon <boris.brezillon@free-electrons.com>2016-06-06 10:16:58 +0200
committerScott Wood <oss@buserror.net>2016-06-19 19:11:57 -0500
commit80ef700f8df1f85dd3b0880584e2e2a998a9b3dd (patch)
tree05a15967c467ee18b442443fb2de292b3b8ecc73 /drivers/mtd
parent494e108651a3c55b85d060202e941e4d8d68ce5e (diff)
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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 <boris.brezillon@free-electrons.com> Acked-by: Hans de Goede <hdegoede@redhat.com> [scottwood: added ifdef to fix build break] Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 5fe169f..8c46a2f 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -117,6 +117,14 @@ config SYS_NAND_U_BOOT_OFFS
Set the offset from the start of the nand where u-boot should be
loaded from.
+config SYS_NAND_U_BOOT_OFFS_REDUND
+ hex "Location in NAND to read U-Boot from"
+ default SYS_NAND_U_BOOT_OFFS
+ depends on SYS_NAND_U_BOOT_LOCATIONS
+ help
+ Set the offset from the start of the nand where the redundant u-boot
+ should be loaded from.
+
config SPL_NAND_DENALI
bool "Support Denali NAND controller for SPL"
help