swu-images: cc6ul: add pre-install script to remove enc flag

For CC6UL, when not using rootfs encryption, the "enc" flag must be removed from
the "mtdparts" U-Boot variable.

https://jira.digi.com/browse/DEL-3685

Signed-off-by: Tatiana Leon <tatiana.leon@digi.com>

meta-digi-dey/recipes-digi/swu-images/core-image-base-swu.bb

@@ -6,6 +6,7 @@ LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425
 
 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')}"
 
 inherit swupdate
 
@@ -30,6 +31,7 @@ ROOTFS_DEV_NAME_FINAL = "${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE
 PREINST_SCRIPT_TEMPLATE = "scripts: ( { filename = \\"preinstall_swu.sh\\"; type = \\"preinstall\\"; sha256 = \\"@preinstall_swu.sh\\"; \\x7D );"
 PREINST_SCRIPT_DESC = ""
 PREINST_SCRIPT_DESC_ccimx6sbc = "${@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}')}"
 
 python () {
     img_fstypes = d.getVar('BOOTFS_EXT', True) + " " + d.getVar('ROOTFS_EXT', True)

meta-digi-dey/recipes-digi/swu-images/dey-image-qt-swu.bb

@@ -6,6 +6,7 @@ LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425
 
 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')}"
 
 inherit swupdate
 
@@ -30,6 +31,7 @@ ROOTFS_DEV_NAME_FINAL = "${@oe.utils.ifelse(d.getVar('TRUSTFENCE_INITRAMFS_IMAGE
 PREINST_SCRIPT_TEMPLATE = "scripts: ( { filename = \\"preinstall_swu.sh\\"; type = \\"preinstall\\"; sha256 = \\"@preinstall_swu.sh\\"; \\x7D );"
 PREINST_SCRIPT_DESC = ""
 PREINST_SCRIPT_DESC_ccimx6sbc = "${@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}')}"
 
 python () {
     img_fstypes = d.getVar('BOOTFS_EXT', True) + " " + d.getVar('ROOTFS_EXT', True)

meta-digi-dey/recipes-digi/swu-images/files/ccimx6ul/preinstall_swu.sh

@@ -0,0 +1,119 @@
+#!/bin/sh
+#===============================================================================
+#
+#  pre-install_swu.sh
+#
+#  Copyright (C) 2017 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 remove the encryption flag from
+#  rootfs
+#
+#  SWUpdate calls this script before installing the image.
+#
+#===============================================================================
+
+# Variables.
+#------------------------------------------------------------------------------
+ENV_MTDPARTS="mtdparts"
+
+# 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"
+}
+
+#------------------------------------------------------------------------------
+# Function - read_uboot_var
+#
+# Reads the given U-Boot variable.
+#
+# @param ${1}  - U-Boot variable to read.
+# @param ${2}  - Where to store the value of the read variable.
+#------------------------------------------------------------------------------
+read_uboot_var() {
+	eval "${2}=\"$(fw_printenv -n ${1} 2>/dev/null)\""
+}
+
+#------------------------------------------------------------------------------
+# Function - set_uboot_var
+#
+# Sets the given U-Boot variable.
+#
+# @param ${1}  - U-Boot variable to set.
+# @param ${2}  - Value to set.
+#------------------------------------------------------------------------------
+set_uboot_var() {
+	fw_setenv ${1} ${2} 2>/dev/null
+}
+
+# Main
+#------------------------------------------------------------------------------
+# Read the mtdparts variable.
+read_uboot_var "${ENV_MTDPARTS}" MTDPARTS
+
+# Check if there is any command.
+if [ -z "${MTDPARTS}" ]; then
+	log_error "No mtdparts found"
+	exit 1
+fi
+
+# Parse the mtdparts value.
+case "${MTDPARTS}" in
+	*\(rootfs\)enc*)
+		# Remove the flag from the rootfs partition.
+		NEW_MTDPARTS=$(echo "${MTDPARTS}" | sed -e "s/(rootfs)enc/(rootfs)/g")
+		set_uboot_var "${ENV_MTDPARTS}" "${NEW_MTDPARTS}"
+		sync && reboot -f
+		;;
+	*)
+esac
+

meta-digi-dey/recipes-digi/swu-images/files/ccimx6ul/sw-description

@@ -16,4 +16,5 @@ software =
             sha256 = "@##ROOTIMG_NAME##";
         }
     );
+    ##PREINSTALL_SCRIPT##
 }