diff --git a/arch/sparc64/lib.c b/arch/sparc64/lib.c
index 6176b5c..a366110 100644
--- a/arch/sparc64/lib.c
+++ b/arch/sparc64/lib.c
@@ -446,7 +446,7 @@ NODE_METHODS( memory ) = {
     { "SUNW,retain",        mem_retain      },
 };
 
-DECLARE_UNNAMED_NODE(mmu, INSTALL_OPEN, 0);
+DECLARE_NODE(mmu, INSTALL_OPEN, 0, "/virtual-memory");
 
 NODE_METHODS(mmu) = {
     { "open",               mmu_open              },
@@ -462,33 +462,18 @@ NODE_METHODS(mmu) = {
 
 void ob_mmu_init(const char *cpuname, uint64_t ram_size)
 {
-    char nodebuff[256];
-
     /* memory node */
     REGISTER_NODE_METHODS(memory, "/memory");
 
     /* MMU node */
-    snprintf(nodebuff, sizeof(nodebuff), "/%s", cpuname);
-    push_str(nodebuff);
-    fword("find-device");
-
-    fword("new-device");
-
-    push_str("mmu");
-    fword("device-name");
-
-    fword("finish-device");
-
-    snprintf(nodebuff, sizeof(nodebuff), "/%s/mmu", cpuname);
-
-    REGISTER_NODE_METHODS(mmu, nodebuff);
+    REGISTER_NODE_METHODS(mmu, "/virtual-memory");
 
     ofmem_register(find_dev("/memory"), find_dev("/virtual-memory"));
 
     push_str("/chosen");
     fword("find-device");
 
-    push_str(nodebuff);
+    push_str("/virtual-memory");
     fword("open-dev");
     fword("encode-int");
     push_str("mmu");
diff --git a/arch/sparc64/tree.fs b/arch/sparc64/tree.fs
index 2a18094..e15c0b5 100644
--- a/arch/sparc64/tree.fs
+++ b/arch/sparc64/tree.fs
@@ -31,19 +31,13 @@ new-device
   external
   : open true ;
   : close ;
-  \ claim ( phys size align -- base )
-\  : claim 2drop ;
-  \ release ( phys size -- )
+  \ see arch/sparc64/lib.c for methods
 finish-device
 
 new-device
   " virtual-memory" device-name
   external
-  : open true ;
-  : close ;
-  \ claim ( phys size align -- base )
-\  : claim 2drop ;
-  \ release ( phys size -- )
+  \ see arch/sparc64/lib.c for methods
 finish-device
 
 " /options" find-device