new file mode 100644
@@ -0,0 +1,207 @@
+From 7c85e2e363fd39e60bf5041d02e14e8bd62c1a68 Mon Sep 17 00:00:00 2001
+From: Quirin Gylstorff <quirin.gylstorff@siemens.com>
+Date: Tue, 24 Mar 2020 17:58:08 +0100
+Subject: [PATCH v7 1/3] meta/support: Generate a custom initramfs
+
+This package sets the Parameters for mkinitramfs/update-intramfs
+before it regenerates the initrd.img of debian with a modified version.
+
+Use cases are the remove unnecessary kernel modules to reduce the
+size of the initrd by using the parameters:
+```
+INITRAMFS_MODULES = "list"
+INITRAMFS_MODULE_LIST += "ext4"
+```
+
+Set the boot root during the initrd generation by setting `INITRAMFS_ROOT`.
+
+see also man pages of mkinitramfs and initramfs.conf.
+
+Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com>
+---
+ .../initramfs-config/initramfs-config_0.1.bb | 6 +++
+ .../initramfs-config/files/control.tmpl | 12 +++++
+ .../initramfs-config/files/postinst.tmpl | 50 +++++++++++++++++++
+ .../initramfs-config/files/postrm.tmpl | 41 +++++++++++++++
+ .../initramfs-config/initramfs-config.inc | 32 ++++++++++++
+ 5 files changed, 141 insertions(+)
+ create mode 100644 meta-isar/recipes-support/initramfs-config/initramfs-config_0.1.bb
+ create mode 100644 meta/recipes-support/initramfs-config/files/control.tmpl
+ create mode 100644 meta/recipes-support/initramfs-config/files/postinst.tmpl
+ create mode 100644 meta/recipes-support/initramfs-config/files/postrm.tmpl
+ create mode 100644 meta/recipes-support/initramfs-config/initramfs-config.inc
+
+diff --git a/meta-isar/recipes-support/initramfs-config/initramfs-config_0.1.bb b/meta-isar/recipes-support/initramfs-config/initramfs-config_0.1.bb
+new file mode 100644
+index 0000000..c951e8a
+--- /dev/null
++++ b/meta-isar/recipes-support/initramfs-config/initramfs-config_0.1.bb
+@@ -0,0 +1,6 @@
++#
++# Copyright (C) Siemens AG, 2020
++#
++# SPDX-License-Identifier: MIT
++
++require recipes-support/initramfs-config/initramfs-config.inc
+diff --git a/meta/recipes-support/initramfs-config/files/control.tmpl b/meta/recipes-support/initramfs-config/files/control.tmpl
+new file mode 100644
+index 0000000..66984eb
+--- /dev/null
++++ b/meta/recipes-support/initramfs-config/files/control.tmpl
+@@ -0,0 +1,12 @@
++Source: ${PN}
++Section: misc
++Priority: optional
++Standards-Version: 3.9.6
++Maintainer: isar-users <isar-users@googlegroups.com>
++Build-Depends: debhelper (>= 9)
++
++
++Package: ${PN}
++Architecture: any
++Depends: ${shlibs:Depends}, ${misc:Depends}, initramfs-tools-core, ${DEBIAN_DEPENDS}
++Description: Configuration files for a custom initramfs
+diff --git a/meta/recipes-support/initramfs-config/files/postinst.tmpl b/meta/recipes-support/initramfs-config/files/postinst.tmpl
+new file mode 100644
+index 0000000..e523906
+--- /dev/null
++++ b/meta/recipes-support/initramfs-config/files/postinst.tmpl
+@@ -0,0 +1,50 @@
++#!/bin/sh
++# postinst script for initramfs-config
++#
++# see: dh_installdeb(1)
++
++set -e
++
++case "$1" in
++ configure)
++ INITRAMFS_CONF=/etc/initramfs-tools/initramfs.conf
++ if [ -f ${INITRAMFS_CONF} ]; then
++ sed -i -E 's/(^MODULES=).*/\1${INITRAMFS_MODULES}/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^BUSYBOX=).*/\1${INITRAMFS_BUSYBOX}/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^COMPRESS=).*/\1${INITRAMFS_COMPRESS}/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^KEYMAP=).*/\1${INITRAMFS_KEYMAP}/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^DEVICE=).*/\1${INITRAMFS_NET_DEVICE}/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^NFSROOT=).*/\1${INITRAMFS_NFSROOT}/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^RUNSIZE=).*/\1${INITRAMFS_RUNSIZE}/' ${INITRAMFS_CONF}
++ if grep -Fxq "ROOT=" "${INITRAMFS_CONF}"; then
++ sed -i -E 's/(^ROOT=).*/\1${INITRAMFS_ROOT}/' ${INITRAMFS_CONF}
++ else
++ sed -i -E "\$aROOT=${INITRAMFS_ROOT}" ${INITRAMFS_CONF}
++ fi
++ fi
++
++ MODULES_LIST_FILE=/etc/initramfs-tools/modules
++ if [ -f ${MODULES_LIST_FILE} ]; then
++ for modname in ${INITRAMFS_MODULE_LIST}; do
++ if ! grep -Fxq "$modname" "${MODULES_LIST_FILE}"; then
++ echo "$modname" >> "${MODULES_LIST_FILE}"
++ fi
++ done
++ fi
++
++ update-initramfs -v -u
++
++ ;;
++ abort-upgrade|abort-remove|abort-deconfigure)
++ ;;
++
++ *)
++ echo "postinst called with unknown argument \`$1'" >&2
++ exit 1
++ ;;
++esac
++# dh_installdeb will replace this with shell code automatically
++# generated by other debhelper scripts.
++#DEBHELPER#
++
++exit 0
+diff --git a/meta/recipes-support/initramfs-config/files/postrm.tmpl b/meta/recipes-support/initramfs-config/files/postrm.tmpl
+new file mode 100644
+index 0000000..115d9b6
+--- /dev/null
++++ b/meta/recipes-support/initramfs-config/files/postrm.tmpl
+@@ -0,0 +1,41 @@
++#!/bin/sh
++# postrm script for initramfs-config
++#
++# see: dh_installdeb(1)
++
++set -e
++
++case "$1" in
++ purge|remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
++ # back to the debian defaults
++ INITRAMFS_CONF=/etc/initramfs-tools/initramfs.conf
++ sed -i -E 's/(^MODULES=).*/\1most/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^BUSYBOX=).*/\1auto/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^COMPRESS=).*/\1gzip/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^KEYMAP=).*/\1n/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^DEVICE=).*/\1/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^NFSROOT=).*/\1auto/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^RUNSIZE=).*/\110%/' ${INITRAMFS_CONF}
++ sed -i -E 's/(^ROOT=).*//' ${INITRAMFS_CONF}
++
++ # remove the added modules
++ MODULES_LIST_FILE=/etc/initramfs-tools/modules
++ for modname in ${INITRAMFS_MODULE_LIST}; do
++ sed -i -E 's/$modname//'
++ done
++
++ update-initramfs -v -u
++ ;;
++
++ *)
++ echo "postrm called with unknown argument \`$1'" >&2
++ exit 1
++ ;;
++esac
++
++# dh_installdeb will replace this with shell code automatically
++# generated by other debhelper scripts.
++
++#DEBHELPER#
++
++exit 0
+diff --git a/meta/recipes-support/initramfs-config/initramfs-config.inc b/meta/recipes-support/initramfs-config/initramfs-config.inc
+new file mode 100644
+index 0000000..16049a9
+--- /dev/null
++++ b/meta/recipes-support/initramfs-config/initramfs-config.inc
+@@ -0,0 +1,32 @@
++# This software is a part of ISAR.
++# Copyright (C) 2020 Siemens AG
++#
++# SPDX-License-Identifier: MIT
++inherit dpkg-raw
++inherit template
++DESCRIPTION = "Recipe to set the initramfs configuration and generate a new ramfs"
++
++FILESEXTRAPATHS_prepend := "${FILE_DIRNAME}/files:"
++
++SRC_URI = "file://postinst.tmpl \
++ file://postrm.tmpl \
++ file://control.tmpl \
++ "
++
++INITRAMFS_MODULES ?= "most"
++INITRAMFS_BUSYBOX ?= "auto"
++INITRAMFS_COMPRESS ?= "gzip"
++INITRAMFS_KEYMAP ?= "n"
++INITRAMFS_NET_DEVICE ?= ""
++INITRAMFS_NFSROOT ?= "auto"
++INITRAMFS_RUNSIZE ?= "10%"
++INITRAMFS_ROOT ?= ""
++INITRAMFS_MODULE_LIST ?= ""
++CREATE_NEW_INITRAMFS ?= "n"
++KERNEL_PACKAGE = "${@ ("linux-image-" + d.getVar("KERNEL_NAME", True)) if d.getVar("KERNEL_NAME", True) else ""}"
++DEBIAN_DEPENDS += ", ${KERNEL_PACKAGE}"
++TEMPLATE_FILES = "postinst.tmpl control.tmpl postrm.tmpl"
++TEMPLATE_VARS += "INITRAMFS_MODULES INITRAMFS_BUSYBOX INITRAMFS_COMPRESS \
++ INITRAMFS_KEYMAP INITRAMFS_NET_DEVICE INITRAMFS_NFSROOT \
++ INITRAMFS_RUNSIZE INITRAMFS_ROOT INITRAMFS_MODULE_LIST \
++ CREATE_NEW_INITRAMFS DEBIAN_DEPENDS PN"
+--
+2.20.1
+
@@ -26,6 +26,9 @@ repos:
01-libubootenv:
path: isar-patches/0001-u-boot-add-libubootenv.patch
repo: cip-core
+ 02-initramfs:
+ path: isar-patches/v7-0001-meta-support-Generate-a-custom-initramfs.patch
+ repo: cip-core
bblayers_conf_header:
standard: |