diff --git a/util/grub-mknetdir.in b/util/grub-mknetdir.in
index 3b4f051c5..a561004e6 100644
--- a/util/grub-mknetdir.in
+++ b/util/grub-mknetdir.in
@@ -45,6 +45,9 @@ debug=no
 debug_image=
 subdir=`echo /boot/grub | sed ${transform}`
 pc_dir=${libdir}/$(echo ${PACKAGE_TARNAME} | sed ${transform})/i386-pc
+ppc_dir=${libdir}/$(echo ${PACKAGE_TARNAME} | sed ${transform})/powerpc-ieee1275
+sparc_dir=${libdir}/$(echo ${PACKAGE_TARNAME} | sed ${transform})/sparc64-ieee1275
+i386_ieee1275_dir=${libdir}/$(echo ${PACKAGE_TARNAME} | sed ${transform})/i386-ieee1275
 
 # Usage: usage
 # Print the usage.
@@ -223,6 +226,15 @@ if [ "${override_dir}" = "" ] ; then
     if test -e "${pc_dir}" ; then
         process_input_dir ${pc_dir} i386-pc
     fi
+    if test -e "${ppc_dir}" ; then
+        process_input_dir ${ppc_dir} powerpc-ieee1275
+    fi
+    if test -e "${sparc_dir}" ; then
+        process_input_dir ${sparc_dir} sparc64-ieee1275
+    fi
+    if test -e "${i386_ieee1275_dir}" ; then
+        process_input_dir ${sparc_dir} i386-ieee1275
+    fi
 else
     source "${override_dir}"/modinfo.sh
     process_input_dir "${override_dir}" ${grub_modinfo_target_cpu}-${grub_modinfo_platform}