[RASPBERRY] Add support to Raspberry Pi 4 machine

* The Raspberry Pi 4 machine only supports U-Boot in Edgehog Things distro,
for this reason we introduce a check on the presence of U-Boot files and
eventually not deploy the package in case no files are found.
* At build time, we only check the number of U-Boot artifacts and give a
  warning if they are less than expected.

build-pipeline-yocto.yml.jinja2

@@ -201,6 +201,11 @@ release:
         {% set MACHINE = "seco-" + PROCESSOR + "-e58" %}
         {% set DEFCONFIG = "seco_smarc_e58_genio700_edgehog" %}
         {% set BUILD_DIR = "build_e58_genio700" %}
+      {% elif 'raspberrypi4-64' in machine %}
+        {% set PROCESSOR = "raspberrypi4-arm64" %}
+        {% set MACHINE = "raspberrypi4-64" %}
+        {% set DEFCONFIG = "raspberrypi4_64_edgehog" %}
+        {% set BUILD_DIR = "build_rpi4_64" %}
       {% endif %}
       {% if PROCESSOR == 'imx6' %}
         {% set UBOOT_FILE = "u-boot.imx" %}
@@ -222,6 +227,10 @@ release:
         {% set UBOOT_FILE = "bl2.img u-boot-initial-env fip.bin" %}
         {% set KERNEL_FILE = "fitImage" %}
         {% set AZURE_PATH = "mediatek/" + machine %}
+      {% elif PROCESSOR == 'raspberrypi4-arm64' %}
+        {% set UBOOT_FILE = "u-boot.bin" %}
+        {% set KERNEL_FILE = "Image" %}
+        {% set AZURE_PATH = "raspberry/" + machine %}
       {% endif %}
     {% endif %}
     {% for distro in DISTRO.split(' ')%}

scripts/check_build_artifacts.sh

@@ -18,11 +18,8 @@ if [[ $UBOOT_FILE != *"none"* ]]; then
     count_uboot_files=$(($count_uboot_files+$count_tmp))
     count_el=$((count_el+1))
   done
-  if [ $count_uboot_files -eq 0 ]; then
-    echo "No uboot artifacts were compiled, exiting with error 1 .."
-    exit 1
-  elif [ $count_uboot_files -gt 0 ] && [ $count_uboot_files -lt "$count_el" ]; then
-    echo "uboot artifacts lower than expected found, warning!"
+  if [ $count_uboot_files -lt "$count_el" ]; then
+    echo "U-Boot artifacts lower than expected found, warning!"
   else 
     echo "All uboot artifacts were found!"
   fi

scripts/deploy_artifacts.sh

@@ -49,25 +49,29 @@ case none in
     for el in $UBOOT_FILE; do
       find $ART_PATH -iname $el -exec cp -L {} $uboot_dir/ \;
     done
-    tar -czvf $BASE_DIRECTORY/$uboot_filename -C $uboot_dir $(for el in ${UBOOT_FILE}; do echo $el; done)
-    ls -la
+    if [ -z "$(ls -A $uboot_dir 2>/dev/null)" ]; then
+        echo "No U-Boot artifacts found, not creating archive to deploy!"
+    else
+        tar -czvf $BASE_DIRECTORY/$uboot_filename -C $uboot_dir $(for el in ${UBOOT_FILE}; do echo $el; done)
+        ls -la
 
-    az storage blob upload --account-name $AZURE_STORAGE_ACCOUNT \
-        --sas-token $AZURE_STORAGE_SAS_TOKEN \
-        --container-name $AZURE_CONTAINER_NAME \
-        --file $BASE_DIRECTORY/$uboot_filename \
-        --name $AZURE_PATH/$DEPLOY_PATH/$uboot_filename \
-        --overwrite
-
-    if [ ! -n "$CI_COMMIT_TAG" ]; then
         az storage blob upload --account-name $AZURE_STORAGE_ACCOUNT \
             --sas-token $AZURE_STORAGE_SAS_TOKEN \
             --container-name $AZURE_CONTAINER_NAME \
             --file $BASE_DIRECTORY/$uboot_filename \
-            --name $AZURE_PATH/$DEPLOY_PATH/$uboot_filename_latest \
+            --name $AZURE_PATH/$DEPLOY_PATH/$uboot_filename \
             --overwrite
+        
+        if [ ! -n "$CI_COMMIT_TAG" ]; then
+            az storage blob upload --account-name $AZURE_STORAGE_ACCOUNT \
+                --sas-token $AZURE_STORAGE_SAS_TOKEN \
+                --container-name $AZURE_CONTAINER_NAME \
+                --file $BASE_DIRECTORY/$uboot_filename \
+                --name $AZURE_PATH/$DEPLOY_PATH/$uboot_filename_latest \
+                --overwrite
+        fi
+        echo "Finishing U-Boot upload"
     fi
-    echo "Finishing U-Boot upload"
     ;;
 esac