commit e1ecafeac7d8273a25c7ef98f963648c5099cbd8
author Braden Kell <bradenkell@google.com> Tue May 16 10:44:28 2017 -0700
committer Alistair Strachan <astrachan@google.com> Mon Aug 13 05:00:08 2018 +0000
tree 9413c38873144d39d4886ef345f7bdb159da3498
parent 1626a022ac9ce8ffd01ec853669521bb47990428

pio: Disable U-Boot console messages

We don't want devices connected to the uart pins
to see "garbage" data printed by U-Boot. We must
set silent here as U-Boot configures serial and
prints messages before reading from the
environment file.

See also:
I86dbcdaf0855dbfbdc68c366a081866d0f5dcbb6

Bug: http://b/31709012
Test: Scoped the uart TX line and it was quiet during boot.
Change-Id: I25ad64e82f4f749032318846e91bb6053959f451

include/configs/rpi.h

diff --git a/include/configs/rpi.h b/include/configs/rpi.h
index ef37c04..01182c3 100644
--- a/include/configs/rpi.h
+++ b/include/configs/rpi.h
@@ -162,6 +162,7 @@
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"dhcpuboot=usb start; dhcp u-boot.uimg; bootm\0" \
+	"silent=1\0" \
 	ENV_DEVICE_SETTINGS \
 	ENV_MEM_LAYOUT_SETTINGS \
 	BOOTENV