[cip-dev] [isar-cip-core PATCH v3 5/5] swupdate: create swu file from wic image

["Quirin Gylstorff" <quirin.gylstorff@siemens.com>]

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From: Quirin Gylstorff <quirin.gylstorff@siemens.com>

Create a swu file for swupdate to update devices in the field.
This is done in the same step as the complete image build
to avoid diverging images.

Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com>
---
 classes/extract-partition.bbclass             | 26 +++++++++++++
 classes/wic-swu-img.bbclass                   | 20 ++++++++++
 kas/opt/ebg-swu.yml                           |  4 +-
 recipes-core/images/cip-core-image.bb         | 10 +++++
 recipes-core/images/files/sw-description.tmpl | 37 +++++++++++++++++++
 5 files changed, 95 insertions(+), 2 deletions(-)
 create mode 100644 classes/extract-partition.bbclass
 create mode 100644 classes/wic-swu-img.bbclass
 create mode 100644 recipes-core/images/files/sw-description.tmpl

diff --git a/classes/extract-partition.bbclass b/classes/extract-partition.bbclass
new file mode 100644
index 0000000..e9de8fc
--- /dev/null
+++ b/classes/extract-partition.bbclass
@@ -0,0 +1,26 @@
+#
+# CIP Core, generic profile
+#
+# Copyright (c) Siemens AG, 2020
+#
+# Authors:
+#  Quirin Gylstorff <quirin.gylstorff@siemens.com>
+#
+# SPDX-License-Identifier: MIT
+#
+
+SOURCE_IMAGE_FILE ?= "${WIC_IMAGE_FILE}"
+EXTRACT_PARTITIONS ?= "img4"
+
+do_extract_partition () {
+    for PARTITION in ${EXTRACT_PARTITIONS}; do
+        rm -f ${DEPLOY_DIR_IMAGE}/${PARTITION}.gz
+        PART_START=$(fdisk -lu ${SOURCE_IMAGE_FILE} | grep ${PARTITION} | awk '{ print $2 }'  )
+        PART_END=$(fdisk -lu ${SOURCE_IMAGE_FILE} | grep ${PARTITION} | awk '{ print $3 }'  )
+        PART_COUNT=$(expr ${PART_END} - ${PART_START} + 1 )
+
+        dd if=${SOURCE_IMAGE_FILE} of=${DEPLOY_DIR_IMAGE}/${PARTITION} bs=512 skip=${PART_START} count=${PART_COUNT}
+
+        gzip ${DEPLOY_DIR_IMAGE}/${PARTITION}
+    done
+}
diff --git a/classes/wic-swu-img.bbclass b/classes/wic-swu-img.bbclass
new file mode 100644
index 0000000..c8532ba
--- /dev/null
+++ b/classes/wic-swu-img.bbclass
@@ -0,0 +1,20 @@
+#
+# CIP Core, generic profile
+#
+# Copyright (c) Siemens AG, 2020
+#
+# Authors:
+#  Quirin Gylstorff <quirin.gylstorff@siemens.com>
+#
+# SPDX-License-Identifier: MIT
+#
+
+
+inherit wic-img
+inherit extract-partition
+inherit swupdate-img
+
+SOURCE_IMAGE_FILE = "${WIC_IMAGE_FILE}"
+
+addtask do_extract_partition after do_wic_image
+addtask do_swupdate_image after do_extract_partition
diff --git a/kas/opt/ebg-swu.yml b/kas/opt/ebg-swu.yml
index 5b39730..304fa4d 100644
--- a/kas/opt/ebg-swu.yml
+++ b/kas/opt/ebg-swu.yml
@@ -22,5 +22,5 @@ local_conf_header:
     WICVARS += "WDOG_TIMEOUT"
 
   wic: |
-    IMAGE_TYPE = "wic-img"
-    WKS_FILE = "${MACHINE}-${BOOTLOADER}.wks"
+    IMAGE_TYPE = "wic-swu-img"
+    WKS_FILE ?= "${MACHINE}-${BOOTLOADER}.wks"
diff --git a/recipes-core/images/cip-core-image.bb b/recipes-core/images/cip-core-image.bb
index 9ee4b25..b1ed491 100644
--- a/recipes-core/images/cip-core-image.bb
+++ b/recipes-core/images/cip-core-image.bb
@@ -17,3 +17,13 @@ DESCRIPTION = "CIP Core image"
 IMAGE_INSTALL += "customizations"
 # for cip-testing
 IMAGE_INSTALL += "ltp-full"
+
+# for swupdate
+EXTRACT_PARTITIONS = "img4"
+ROOTFS_PARTITION_NAME="img4.gz"
+
+SRC_URI += "file://sw-description.tmpl"
+TEMPLATE_FILES += "sw-description.tmpl"
+TEMPLATE_VARS += "PN ROOTFS_PARTITION_NAME KERNEL_IMAGE INITRD_IMAGE"
+
+SWU_ADDITIONAL_FILES += "${INITRD_IMAGE} ${KERNEL_IMAGE} ${ROOTFS_PARTITION_NAME}"
diff --git a/recipes-core/images/files/sw-description.tmpl b/recipes-core/images/files/sw-description.tmpl
new file mode 100644
index 0000000..4d32f6f
--- /dev/null
+++ b/recipes-core/images/files/sw-description.tmpl
@@ -0,0 +1,37 @@
+#
+# CIP Core, generic profile
+#
+# Copyright (c) Siemens AG, 2020
+#
+# Authors:
+#  Quirin Gylstorff <quirin.gylstorff@siemens.com>
+#
+# SPDX-License-Identifier: MIT
+#
+software =
+{
+    version = "0.2";
+    name = "cip software update"
+    images: ({
+            filename = "${ROOTFS_PARTITION_NAME}";
+            device = "fedcba98-7654-3210-cafe-5e0710000001,fedcba98-7654-3210-cafe-5e0710000002";
+            type = "roundrobin";
+            compressed = true;
+            filesystem = "ext4";
+    });
+    files: ({
+            filename = "${KERNEL_IMAGE}";
+            path = "vmlinuz";
+            type = "kernelfile";
+            device = "sda2,sda3";
+            filesystem = "vfat";
+    },
+    {
+            filename = "${INITRD_IMAGE}";
+            path = "initrd.img";
+            type = "kernelfile";
+            device = "sda2,sda3";
+            filesystem = "vfat";
+    });
+}
+
-- 
2.20.1


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