Add the create ISO component for ARMv7

The ostree compose process in pungi wants ISOs and it was the last part
of the ARMv7 components that weren't at parity with other architectures.
Add the missing functionality.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>

share/templates.d/99-generic/arm.tmpl

@@ -15,6 +15,16 @@ delimiter = ''
 from os.path import basename
 %>
 
+## Test ${runtime_img} to see if udf is needed
+<%
+    import os
+    from pylorax.sysutils import joinpaths
+    if os.stat(joinpaths(inroot, runtime_img)).st_size >= 4*1024**3:
+        udfargs = "-allow-limited-size"
+    else:
+        udfargs = ""
+%>
+
 mkdir images
 install ${runtime_img} ${STAGE2IMG}
 treeinfo stage2 mainimage ${STAGE2IMG}
@@ -38,21 +48,57 @@ mkdir ${KERNELDIR}
     %endif
 %endfor
 
+<% efiargs=""; efigraft="" %>
+%if exists("boot/efi/EFI/*/gcdaa64.efi"):
+    <%
+    efiarch32 = ARM
+    efiarch64 = None
+    efigraft="EFI/BOOT={0}/EFI/BOOT".format(outroot)
+    images = ["images/efiboot.img"]
+    %>
+    %for img in images:
+        <%
+        efiargs += " -eltorito-alt-boot -e {0} -no-emul-boot".format(img)
+        efigraft += " {0}={1}/{0}".format(img,outroot)
+        %>
+        treeinfo images-${basearch} ${img|basename} ${img}
+    %endfor
+    <%include file="efi.tmpl" args="configdir=configdir, KERNELDIR=KERNELDIR, efiarch32=efiarch32, efiarch64=efiarch64, isolabel=isolabel"/>
+%endif
+
 # add platform to treeinfo for Beaker support
 treeinfo ${basearch} platforms ${platforms}
 
 # Create optional product.img and updates.img
-<% images=["product", "updates"] %>
+<% filegraft=""; images=["product", "updates"] %>
 %for img in images:
     %if exists("%s/%s/" % (LORAXDIR, img)):
         installimg --xz -9 --memlimit-compress=3700MiB ${LORAXDIR}/${img}/ images/${img}.img
         treeinfo images-${basearch} ${img}.img images/${img}.img
+        <% filegraft += " images/{0}.img={1}/images/{0}.img".format(img, outroot) %>
     %endif
 %endfor
 
+# Inherit iso-graft/ if it exists from external templates
+<%
+    import os
+    if os.path.exists(workdir + "/iso-graft"):
+        filegraft += " " + workdir + "/iso-graft"
+%>
+
 # Add the license files
 %for f in glob("/usr/share/licenses/*-release/*"):
     install ${f} ${f|basename}
+    <% filegraft += " {0}={1}/{0}".format(basename(f), outroot) %>
 %endfor
 
-## FIXME: ARM may need some extra boot config
+%if exists("boot/efi/EFI/*/gcdarm.efi"):
+## make boot.iso
+runcmd mkisofs -o ${outroot}/images/boot.iso \
+       ${efiargs} -R -J -V '${isolabel}' -T ${udfargs} \
+       -graft-points \
+       ${KERNELDIR}=${outroot}/${KERNELDIR} \
+       ${STAGE2IMG}=${outroot}/${STAGE2IMG} \
+       ${efigraft} ${filegraft}
+treeinfo images-${basearch} boot.iso images/boot.iso
+%endif