meta-digi-dey: Add auto-serial-console recipe.

This support comes from meta-linaro @9f899282caa9 and adds the ability
to configure getty dynamically from the console argument in the kernel
command line.

This will make it possible to enable/disable the console dynamically as
signalled by U-Boot.

Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com>

meta-digi-dey/recipes-digi/auto-serial-console/auto-serial-console/auto-getty

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+set -e
+
+[ -f "/etc/default/autogetty" ] && . /etc/default/autogetty
+
+[ "${ENABLED}" != "1" ] && exit
+
+for arg in $(cat /proc/cmdline); do
+	case "${arg}" in
+		console=*)
+			eval ${arg}
+			TTY="${console%,*}"
+			SPEED="${console#*,}"
+
+			# If no speed is given default to 115200 and fall-back
+			[ "${SPEED}" = "${TTY}" ] && SPEED="115200,57600,38400,19200,9600"
+
+			if [ -n "${TTY}" ] && grep -qs "${TTY}" /etc/securetty; then
+				/sbin/getty -L "${SPEED}" "${TTY}" &
+			fi
+			;;
+	esac
+done

meta-digi-dey/recipes-digi/auto-serial-console/auto-serial-console/auto-serial-console

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin
+DAEMON=/usr/bin/auto-getty
+NAME="auto-getty"
+
+case "$1" in
+  start)
+        echo -n "Starting auto-serial-console: "
+        start-stop-daemon -S -b -n $NAME --exec $DAEMON
+        echo "done"
+        ;;
+  stop)
+        echo -n "Stopping auto-serial-console: "
+        start-stop-daemon -K -n $NAME
+        echo "done"
+        ;;
+  restart)
+        $0 stop
+        $0 start
+        ;;
+  *)
+        echo "Usage: auto-serial-console { start | stop | restart }" >&2
+        exit 1
+        ;;
+esac
+
+exit 0
+

meta-digi-dey/recipes-digi/auto-serial-console/auto-serial-console/autogetty

@@ -0,0 +1 @@
+ENABLED=##ENABLED##

meta-digi-dey/recipes-digi/auto-serial-console/auto-serial-console_0.1.bb

@@ -0,0 +1,34 @@
+SUMMARY = "Auto Serial Console script"
+DESCRIPTION = "Scripts to call the console tty from the kernel cmd line"
+SECTION = "base"
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "\
+    file://${COREBASE}/LICENSE;md5=4d92cd373abda3937c2bc47fbc49d690 \
+    file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420 \
+"
+
+SRC_URI = "\
+    file://autogetty \
+    file://auto-getty \
+    file://auto-serial-console \
+"
+
+S = "${WORKDIR}"
+
+inherit update-rc.d
+
+INITSCRIPT_NAME = "auto-serial-console"
+INITSCRIPT_PARAMS = "start 99 5 ."
+
+do_install () {
+	install -m 0755 -d ${D}${sysconfdir}/default
+	AUTOGETTY_ENABLE='${@base_conditional( "TRUSTFENCE_CONSOLE_DISABLE", "1", "1", "0", d )}'
+	install -m 0644 ${WORKDIR}/autogetty ${D}${sysconfdir}/default/autogetty
+	sed -i -e "s/##ENABLED##/${AUTOGETTY_ENABLE}/g" ${D}${sysconfdir}/default/autogetty
+
+	install -m 0755 -d ${D}${sysconfdir}/init.d
+	install -m 0755 ${WORKDIR}/auto-serial-console ${D}${sysconfdir}/init.d/auto-serial-console
+
+	install -m 0755 -d ${D}${bindir}
+	install -m 0755 ${WORKDIR}/auto-getty ${D}${bindir}/auto-getty
+}