init: warn user that if CONFIG_QUIET_MODE was enabled in board config…

… at build time but disabled through Configuration Settings applied override, early measurement output got suppressed

Also tell user that those early suppressed messages can be seen under /tmp/debug.txt

Signed-off-by: Thierry Laurion <insurgo@riseup.net>

initrd/bin/cbfs-init

@@ -6,8 +6,8 @@ set -e -o pipefail
 #  This extraction and measurement cannot be suppressed by quiet mode, since 
 #   config.user is not yet loaded at this point.
 #  To suppress this output, set CONFIG_QUIET_MODE=y needs be be set in /etc/config
-#   which is defined at buiid time under board configuration file to be part of initrd.cpio
-#  This script is called from initrd/init
+#   which is defined at build time under board configuration file to be part of initrd.cpio
+#  This script is called from initrd/init so really early in the boot process to put files in place in initramfs
 
 TRACE_FUNC
 

initrd/init

@@ -109,12 +109,21 @@ fi
 if [ "$CONFIG_QUIET_MODE" = "y" ]; then
 	# check origin of quiet mode setting =y: if it is under /etc/config.user then early cbfs-init outputs are not suppressible
 	# if it is under /etc/config then early cbfs-init outputs are suppressible
-	if ! grep -q 'CONFIG_QUIET_MODE="y"' /etc/config.user 2>/dev/null; then
-		echo "Quiet mode enabled: refer to '/tmp/debug.log' for boot measurements traces" >/dev/tty0
+	if grep -q 'CONFIG_QUIET_MODE="y"' /etc/config 2>/dev/null; then
+		echo "Quiet mode enabled from board configuration: refer to '/tmp/debug.log' for boot measurements traces" >/dev/tty0
 	else
-		echo "Runtime Quiet mode: refer to '/tmp/debug.log' for additional boot measurements traces past this point" >/dev/tty0
+		echo "Runtime applied Quiet mode: refer to '/tmp/debug.log' for additional boot measurements traces past this point" >/dev/tty0
 		echo "To suppress earlier boot measurements traces, enable CONFIG_QUIET_MODE=y in your board configuration at build time." >/dev/tty0
 	fi
+# If CONFIG_QUIET_MODE enabled in board config but disabled from Config->Configuration Settings
+# warn that early boot measurements output was suppressed prior of this point
+elif [ "$CONFIG_QUIET_MODE" = "n" ]; then
+	# if CONFIG_QUIET_MODE=n in /etc/config.user but CONFIG_QUIET_MODE=y in /etc/config then early cbfs-init outputs are suppressed
+	# both needs to be checked to determine if early boot measurements traces were suppressed
+	if grep -q 'CONFIG_QUIET_MODE="y"' /etc/config 2>/dev/null && grep -q 'CONFIG_QUIET_MODE="n"' /etc/config.user 2>/dev/null; then
+		echo "Early boot measurements traces were suppressed per CONFIG_QUIET_MODE=y in your board configuration at build time (/etc/config)" >/dev/tty0
+		echo "Runtime applied Quiet mode disabled: refer to '/tmp/debug.log' for cbfs-init related traces prior of this point" >/dev/tty0
+	fi
 fi
 
 TRACE_FUNC