tree 05a15967c467ee18b442443fb2de292b3b8ecc73
parent 05b769d06f365f3bb7df0aca8b79cbec290d7155
author Boris Brezillon <boris.brezillon@free-electrons.com> 1465201018 +0200
committer Scott Wood <oss@buserror.net> 1466381517 -0500

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>