From 0514d03e0ee652c5b974748addadee958b4f41db Mon Sep 17 00:00:00 2001
From: Alex Gonzalez <alex.gonzalez@digi.com>
Date: Thu, 27 Nov 2014 14:28:52 +0100
Subject: [PATCH] meta-digi-dey: Add a dey-image-tiny initramfs image.

    To boot from TFTP/NFS you need something like:

    setenv uimage uImage-ccimx6sbc
    setenv initrdimg dey-image-tiny-initramfs-ccimx6sbc.rootfs.initramfs
    setenv fdt_file uImage-imx6q-ccimx6sbc.dtb
    setenv initrdaddr 0x22000000
    setenv bootargs console=ttymxc3,115200 rdinit=/sbin/init
    saveenv

    tftp $loadaddr $uimage
    tftp $initrdaddr $initrdimg
    tftp $fdt_addr $fdt_file

    bootm $loadaddr $initrdaddr $fdt_addr

Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com>
---
 .../recipes-core/images/dey-image-tiny-initramfs.bb  | 12 ++++++++++++
 .../initscripts/initscripts-1.0/devtmpfs.sh          |  7 +++++++
 .../initscripts/initscripts_1.0.bbappend             |  5 ++++-
 3 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 meta-digi-dey/recipes-core/images/dey-image-tiny-initramfs.bb
 create mode 100644 meta-digi-dey/recipes-core/initscripts/initscripts-1.0/devtmpfs.sh

diff --git a/meta-digi-dey/recipes-core/images/dey-image-tiny-initramfs.bb b/meta-digi-dey/recipes-core/images/dey-image-tiny-initramfs.bb
new file mode 100644
index 000000000..0320a61ff
--- /dev/null
+++ b/meta-digi-dey/recipes-core/images/dey-image-tiny-initramfs.bb
@@ -0,0 +1,12 @@
+#
+# Copyright (C) 2014 Digi International.
+#
+DESCRIPTION = "DEY busybox only based initramfs image."
+
+include dey-image-tiny.bb
+
+export IMAGE_BASENAME = "dey-image-tiny-initramfs"
+
+IMAGE_FSTYPES = "${INITRAMFS_FSTYPES}"
+IMAGE_FSTYPES_append = " rootfs.initramfs"
+
diff --git a/meta-digi-dey/recipes-core/initscripts/initscripts-1.0/devtmpfs.sh b/meta-digi-dey/recipes-core/initscripts/initscripts-1.0/devtmpfs.sh
new file mode 100644
index 000000000..70956ab0b
--- /dev/null
+++ b/meta-digi-dey/recipes-core/initscripts/initscripts-1.0/devtmpfs.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+if grep -q devtmpfs /proc/filesystems; then
+	# mount the devtmpfs on /dev, if not already done
+	LANG=C awk '$2 == "/dev" && ($3 == "devtmpfs") { exit 1 }' /proc/mounts && {
+	mount -n -o mode=0755 -t devtmpfs none "/dev"
+	}
+fi
diff --git a/meta-digi-dey/recipes-core/initscripts/initscripts_1.0.bbappend b/meta-digi-dey/recipes-core/initscripts/initscripts_1.0.bbappend
index 3cbc393ac..3eb7a4136 100644
--- a/meta-digi-dey/recipes-core/initscripts/initscripts_1.0.bbappend
+++ b/meta-digi-dey/recipes-core/initscripts/initscripts_1.0.bbappend
@@ -2,8 +2,11 @@
 
 FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}-${PV}:"
 
-SRC_URI += "file://device_table.txt"
+SRC_URI += "file://device_table.txt \
+	    file://devtmpfs.sh"
 
 do_install_append() {
+	install -m 755 ${WORKDIR}/devtmpfs.sh ${D}${sysconfdir}/init.d/devtmpfs.sh
+	update-rc.d -r ${D} devtmpfs.sh start 03 S .
 	install -m 0755 ${WORKDIR}/device_table.txt ${D}${sysconfdir}/device_table
 }