Start using constants from ROM for EC groups
diff --git a/library/ecp.c b/library/ecp.c
index 02f1b61..0e4be10 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -277,6 +277,10 @@
 {
     size_t i;
 
+    /* FIXME WIP */
+    if( grp->id != 0 )
+        return;
+
     if( grp == NULL )
         return;