From d5c5544cca005aa38248b4341f8aeee414dfd170 Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Fri, 25 Apr 2014 11:42:15 -0700
Subject: [PATCH] fix(syslinux): Display boot: prompt for a half second.

This should make it less difficult for people to add kernel options for
debugging. Without a prompt/timeout the user must be holding down space
or some other key while syslinux loads but it may not be possible for
the user to do so provide input quite that fast. Only a half second to
avoid needlessly increasing boot times in the common case.
---
 build_library/configure_bootloaders.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/build_library/configure_bootloaders.sh b/build_library/configure_bootloaders.sh
index e5a942c9b3..effc9c3e79 100755
--- a/build_library/configure_bootloaders.sh
+++ b/build_library/configure_bootloaders.sh
@@ -93,8 +93,11 @@ configure_syslinux() {
 
   sudo_clobber "${SYSLINUX_DIR}/syslinux.cfg" <<EOF
 SERIAL 0 115200
-PROMPT 0
-TIMEOUT 0
+PROMPT 1
+# display boot: prompt for a half second
+TIMEOUT 5
+# never sit at the prompt longer than a minute
+TOTALTIMEOUT 600
 
 # controls which kernel is the default
 include /syslinux/default.cfg