diff --git a/poky/scripts/lib/wic/help.py b/poky/scripts/lib/wic/help.py
index af7d057..968cc0e 100644
--- a/poky/scripts/lib/wic/help.py
+++ b/poky/scripts/lib/wic/help.py
@@ -1046,3 +1046,59 @@
 DESCRIPTION
     Specify a help topic to display it. Topics are shown above.
 """
+
+
+wic_help = """
+Creates a customized OpenEmbedded image.
+
+Usage:  wic [--version]
+        wic help [COMMAND or TOPIC]
+        wic COMMAND [ARGS]
+
+    usage 1: Returns the current version of Wic
+    usage 2: Returns detailed help for a COMMAND or TOPIC
+    usage 3: Executes COMMAND
+
+
+COMMAND:
+
+    list   -   List available canned images and source plugins
+    ls     -   List contents of partitioned image or partition
+    rm     -   Remove files or directories from the vfat or ext* partitions
+    help   -   Show help for a wic COMMAND or TOPIC
+    write  -   Write an image to a device
+    cp     -   Copy files and directories to the vfat or ext* partitions
+    create -   Create a new OpenEmbedded image
+
+
+TOPIC:
+    overview  - Presents an overall overview of Wic
+    plugins   - Presents an overview and API for Wic plugins
+    kickstart - Presents a Wic kicstart file reference
+
+
+Examples:
+
+    $ wic --version
+
+    Returns the current version of Wic
+
+
+    $ wic help cp
+
+    Returns the SYNOPSIS and DESCRIPTION for the Wic "cp" command.
+
+
+    $ wic list images
+
+    Returns the list of canned images (i.e. *.wks files located in
+    the /scripts/lib/wic/canned-wks directory.
+
+
+    $ wic create mkefidisk -e core-image-minimal
+
+    Creates an EFI disk image from artifacts used in a previous
+    core-image-minimal build in standard BitBake locations
+    (e.g. Cooked Mode).
+
+"""
diff --git a/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py b/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
index 24299c1..11326a2 100644
--- a/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
+++ b/poky/scripts/lib/wic/plugins/source/isoimage-isohybrid.py
@@ -336,19 +336,23 @@
                 (img_iso_dir, isodir)
             exec_cmd(install_cmd)
         else:
+            # Default to 100 blocks of extra space for file system overhead
+            esp_extra_blocks = int(source_params.get('esp_extra_blocks', '100'))
+
             du_cmd = "du -bks %s/EFI" % isodir
             out = exec_cmd(du_cmd)
             blocks = int(out.split()[0])
-            # Add some extra space for file system overhead
-            blocks += 100
+            blocks += esp_extra_blocks
             logger.debug("Added 100 extra blocks to %s to get to %d "
                          "total blocks", part.mountpoint, blocks)
 
             # dosfs image for EFI boot
             bootimg = "%s/efi.img" % isodir
 
-            dosfs_cmd = 'mkfs.vfat -n "EFIimg" -S 512 -C %s %d' \
-                        % (bootimg, blocks)
+            esp_label = source_params.get('esp_label', 'EFIimg')
+
+            dosfs_cmd = 'mkfs.vfat -n \'%s\' -S 512 -C %s %d' \
+                        % (esp_label, bootimg, blocks)
             exec_native_cmd(dosfs_cmd, native_sysroot)
 
             mmd_cmd = "mmd -i %s ::/EFI" % bootimg