[PATCH v4 4/5] meta/classes: added fit-img class for creation of fit images

[claudius.heine.ext@siemens.com]

From: Claudius Heine <ch@denx.de>

This class implements a new image type for FIT image creation.

Signed-off-by: Claudius Heine <ch@denx.de>
---
 meta/classes/fit-img.bbclass | 49 ++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 meta/classes/fit-img.bbclass

diff --git a/meta/classes/fit-img.bbclass b/meta/classes/fit-img.bbclass
new file mode 100644
index 0000000..013b553
--- /dev/null
+++ b/meta/classes/fit-img.bbclass
@@ -0,0 +1,49 @@
+# This software is a part of ISAR.
+# Copyright (C) Siemens AG, 2019
+#
+# SPDX-License-Identifier: MIT
+
+MKIMAGE_ARGS ??= ""
+
+FIT_IMAGE_SOURCE ??= "fitimage.its"
+
+inherit image
+
+FIT_IMAGE_FILE ?= "${IMAGE_FULLNAME}.fit.img"
+
+IMAGER_INSTALL += "u-boot-tools device-tree-compiler"
+
+PP = "/home/builder/${PN}"
+PP_DEPLOY = "${PP}/deploy"
+PP_ROOTFS = "${PP}/rootfs"
+PP_WORK = "${PP}/work"
+
+BUILDROOT = "${BUILDCHROOT_DIR}${PP}"
+BUILDROOT_DEPLOY = "${BUILDCHROOT_DIR}${PP_DEPLOY}"
+BUILDROOT_ROOTFS = "${BUILDCHROOT_DIR}${PP_ROOTFS}"
+BUILDROOT_WORK = "${BUILDCHROOT_DIR}${PP_WORK}"
+
+do_fit_image[stamp-extra-info] = "${DISTRO}-${MACHINE}"
+
+# Generate fit image
+do_fit_image() {
+    if [ ! -e "${WORKDIR}/${FIT_IMAGE_SOURCE}" ]; then
+        die "FIT_IMAGE_SOURCE does not contain fitimage source file"
+    fi
+
+    rm -f ${DEPLOY_DIR_IMAGE}/${FIT_IMAGE_FILE}
+
+    buildchroot_do_mounts
+
+    sudo flock ${MOUNT_LOCKFILE} -c ' \
+        mkdir -p ${BUILDROOT_DEPLOY} ${BUILDROOT_ROOTFS} ${BUILDROOT_WORK}
+        mount --bind ${DEPLOY_DIR_IMAGE} ${BUILDROOT_DEPLOY}
+        mount --bind ${IMAGE_ROOTFS} ${BUILDROOT_ROOTFS}
+        mount --bind ${WORKDIR} ${BUILDROOT_WORK}
+    '
+
+    # Create fit image using buildchroot tools
+    sudo chroot ${BUILDCHROOT_DIR} /usr/bin/mkimage ${MKIMAGE_ARGS} \
+                -f "${PP_WORK}/${FIT_IMAGE_SOURCE}" "${PP_DEPLOY}/${FIT_IMAGE_FILE}"
+}
+addtask fit_image before do_build after do_copy_boot_files do_install_imager_deps do_unpack do_transform_template
-- 
2.20.1