tree 1da311f841e1817584294ce395119ef81ff067a7
parent ee597ac3b95c28322945b61448498a7ae6bf55f4
author Andrew Jeffery <andrew@aj.id.au> 1524198124 +0930
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1525138390 +0000

phosphor: u-boot: Switch sides on failure to boot

This is an incomplete effort to prevent a hang in u-boot due to a
failed `boot` command. This will not take affect by updating via the
ubi.mtd.tar method, as it does not allow arbitrary updates to the u-boot
environment. Resolving that issue will take at least one more change and
force a double reboot to complete the upgrade, or writing the full flash
image and take the hit of the associated loss of system-specific
settings (such as network configuration).

Tested: Instrumented which chip the system was currently booted from,
	configured u-boot with a broken kernelname environment variable,
	attempted to boot, confirmed a system reset occurred and the
 	chip used by the reboot was different.

Change-Id: I825728caff6b5d4bb4d527bfe86488d5f5487f14
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>