From mboxrd@z Thu Jan  1 00:00:00 1970
From: Brendan Simon (eTRIX) <brendan.simon@etrix.com.au>
Date: Sun, 6 Dec 2015 15:19:26 +1100
Subject: [U-Boot] u-boot retries with fallback to other images
Message-ID: <5663B74E.7000204@etrix.com.au>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Hi,

Is there any documentation or u-boot support for having a list of boot
images to try, starting with the first in the list, trying 1, 2 or 3
times, then trying the next in the list.

e.g. boot kernel at mmcblk0p3, then mmcblk0p2, then mmcblk1p2, then
tftp/nfs last resort fallback ?
or
    boot off partition 3 of eMMC, then partition2 of eMMC, then
partition 2 of SD card, then tftp/nfs ?

I've seen some info on google that says this is possible.  I'm just
looking for good documentation that can explain how to set it all up.

Thanks,
Brendan.