tree 3bd92e3d58c0bbc2dcb4b9581ac1cc1966edac66
parent aa6379978ddd7864a7fa17ee3911c169117e6385
author Julius Werner <jwerner@chromium.org> 1385180002 -0800
committer chrome-internal-fetch <chrome-internal-fetch@google.com> 1386641627 +0000

write_firmware: Work around tegrarcm bug with cold_reset

There's a weird bug with tegrarcm or the miniloader included with it on
our Nyan boards: when you enter recovery mode via cold_reset (instead of
warm_reset), the first invocation will fail at the "retrieving platform
info" stage. Just running it again (without another reset) seems to then
make it work. This patch works around that problem by identifying the
error and retrying tegrarcm. While we normally warm_reset anyway, this
is still important for people trying to flash without Servo, since
there's only a cold_reset button on the mainboard.

BUG=chrome-os-partner:24073
TEST=Make sure Nyan can be flashed without a Servo on the first try.

Change-Id: I22c90a863dbc34bf1b190e570731aa77ba310e30
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/177841
Reviewed-by: Simon Glass <sjg@chromium.org>