swu-images: add support for ccimx8mn platform

https://jira.digi.com/browse/DEL-6806

Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>

meta-digi-dey/recipes-digi/swu-images/files/ccimx8mn/preinstall_swu.sh

@@ -0,0 +1,83 @@
+#!/bin/sh
+#===============================================================================
+#
+#  preinstall_swu.sh
+#
+#  Copyright (C) 2018 by Digi International Inc.
+#  All rights reserved.
+#
+#  This program is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU General Public License version 2 as published by
+#  the Free Software Foundation.
+#
+#  !Description: SWUpdate pre-install script to open the virtual mapped device
+#
+#  SWUpdate calls this script before installing the image.
+#
+#===============================================================================
+
+# Functions.
+#------------------------------------------------------------------------------
+# Function - psplash_message
+#
+# Shows the given message in the psplash screen.
+#
+# @param ${1}  - Message to show.
+#------------------------------------------------------------------------------
+psplash_message() {
+	echo "MSG ${1}" > /tmp/psplash_fifo
+	sleep 0.2
+}
+
+#------------------------------------------------------------------------------
+# Function - psplash_progress
+#
+# Sets the psplash progress bar percentage to the given one.
+#
+# @param ${1}  - Progress percentage.
+#------------------------------------------------------------------------------
+psplash_progress() {
+	echo "PROGRESS ${1}" > /tmp/psplash_fifo
+	sleep 0.2
+}
+
+#------------------------------------------------------------------------------
+# Function - log
+#
+# Prints the given text in the console.
+#
+# @param ${1}  - Text to print.
+#------------------------------------------------------------------------------
+log() {
+	echo "[FW UPDATE] ${1}"
+}
+
+#------------------------------------------------------------------------------
+# Function - log_error
+#
+# Prints the given text in the console as an error.
+#
+# @param ${1}  - Error text to print.
+#------------------------------------------------------------------------------
+log_error() {
+	log "[ERROR] ${1}"
+	psplash_message "ERROR: ${1}"
+	psplash_progress "0"
+}
+
+# Main
+#------------------------------------------------------------------------------
+# Check if encrypted device is already open.
+if [ -b /dev/mapper/cryptroot ]; then
+	exit 0
+fi
+
+rootfs_block="/dev/mmcblk0p$(fdisk -l /dev/mmcblk0 | sed -ne "s,^[^0-9]*\([0-9]\+\).*\<rootfs\>.*,\1,g;T;p")"
+
+# Open LUKS encrypted device
+trustfence-tool ${rootfs_block} cryptroot
+if [ "$?" != "0" ]; then
+	log_error "Error executing the firmware update, cannot open virtual device"
+	exit 1
+fi
+

meta-digi-dey/recipes-digi/swu-images/files/ccimx8mn/sw-description

@@ -0,0 +1,20 @@
+software =
+{
+    version = "##SW_VERSION##";
+
+    images: (
+        {
+            filename = "##BOOTIMG_NAME##";
+            device = "##BOOT_DEV##";
+            type = "raw";
+            sha256 = "@##BOOTIMG_NAME##";
+        },
+        {
+            filename = "##ROOTIMG_NAME##";
+            device = "##ROOTFS_DEV##";
+            type = "raw";
+            sha256 = "@##ROOTIMG_NAME##";
+        }
+    );
+    ##PREINSTALL_SCRIPT##
+}

meta-digi-dey/recipes-digi/swu-images/swu.inc

@@ -1,4 +1,4 @@
-# Copyright (C) 2016, 2017 Digi International Inc.
+# Copyright (C) 2016-2020 Digi International Inc.
 SUMMARY = "Generate update package for SWUpdate"
 SECTION = "base"
 LICENSE = "GPL-2.0"
@@ -8,6 +8,7 @@ SRC_URI = "file://sw-description"
 SRC_URI_append_ccimx6 = " ${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), 'file://preinstall_swu.sh', '')}"
 SRC_URI_append_ccimx6ul = " ${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), '', 'file://preinstall_swu.sh')}"
 SRC_URI_append_ccimx8x = " ${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), 'file://preinstall_swu.sh', '')}"
+SRC_URI_append_ccimx8m = " ${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), 'file://preinstall_swu.sh', '')}"
 
 inherit swupdate
 
@@ -36,6 +37,7 @@ PREINST_SCRIPT_DESC = ""
 PREINST_SCRIPT_DESC_ccimx6 = "${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), '${PREINST_SCRIPT_TEMPLATE}', '')}"
 PREINST_SCRIPT_DESC_ccimx6ul = "${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), '', '${PREINST_SCRIPT_TEMPLATE}')}"
 PREINST_SCRIPT_DESC_ccimx8x = "${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), '${PREINST_SCRIPT_TEMPLATE}', '')}"
+PREINST_SCRIPT_DESC_ccimx8m = "${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE', True), '${PREINST_SCRIPT_TEMPLATE}', '')}"
 
 python () {
     img_fstypes = d.getVar('BOOTFS_EXT', True) + " " + d.getVar('ROOTFS_EXT', True)