Change additionalInitrdFiles to an array

src/modules/bootloader/bootloader.conf

@@ -16,7 +16,9 @@ kernelName: "vmlinuz"
 timeout: "10"
 
 # additionalInitrdFiles is a comma seperated list of file names
-additionalInitrdFiles: "/boot/amd-ucode,/boot/intel-ucode"
+additionalInitrdFiles:
+    - "/boot/amd-ucode"
+    - "/boot/intel-ucode"
 
 # Optionally set the menu entry name to use in systemd-boot.
 # If not specified here, these settings will be taken from branding.desc.

src/modules/bootloader/bootloader.schema.yaml

@@ -10,7 +10,10 @@ properties:
     kernelSearchPath:  { type: string }
     kernelName:  { type: string }
     timeout:  { type: string }  # Inserted verbatim
-    additionalInitrdFiles:  { type: string }
+    additionalInitrdFiles:
+        type: array
+        items:
+            type: string
     bootloaderEntryName:  { type: string }
     kernelLine:  { type: string }
     fallbackKernelLine:  { type: string }

src/modules/bootloader/main.py

@@ -168,7 +168,7 @@ def create_systemd_boot_conf(installation_root_path, efi_dir, uuid, entry, kerne
 
     try:
         additional_initrd_files = libcalamares.job.configuration["additionalInitrdFiles"]
-        for initrd_file in additional_initrd_files.split(','):
+        for initrd_file in additional_initrd_files:
             libcalamares.utils.debug("Attempting to handle initrd image " + initrd_file)
             if os.path.isfile(os.path.join(installation_root_path, initrd_file.lstrip('/'))):
                 libcalamares.utils.debug("Found image " + initrd_file)