diff --git a/arch/sparc32/tree.fs b/arch/sparc32/tree.fs
index 7f872ba..0d4fb51 100644
--- a/arch/sparc32/tree.fs
+++ b/arch/sparc32/tree.fs
@@ -2,11 +2,17 @@
 " /" find-device
   2 encode-int " #address-cells" property
   1 encode-int " #size-cells" property
+
   " SUNW,SPARCstation-5" encode-string " name" property
   " SPARCstation 5" encode-string " banner-name" property
   " sun4m" encode-string " compatible" property
+  " SUNW,501-3059" encode-string " model" property
+  h# 0a21fe80 encode-int " clock-frequency" property
+  
   " /obio/zs@0,100000:a" encode-string " stdin-path" property
   " /obio/zs@0,100000:a" encode-string " stdout-path" property
+
+  
   : encode-unit encode-unit-sbus ;
   : decode-unit decode-unit-sbus ;
 
@@ -32,6 +38,9 @@ new-device
   " iommu" device-name
   2 encode-int " #address-cells" property
   1 encode-int " #size-cells" property
+  h# 1000 encode-int " page-size" property
+  0 encode-int " cache-coherence?" property
+  h# ffee8000 encode-int " address" property
   h# 0 encode-int h# 10000000 encode-int encode+ h# 00000300 encode-int encode+ " reg" property
   external
   : open ( cr ." opening iommu" cr) true ;
@@ -46,6 +55,10 @@ new-device
   " hierarchical" device-type
   2 encode-int " #address-cells" property
   1 encode-int " #size-cells" property
+  h# 01443fd0 encode-int " clock-frequency" property
+  h# 1c encode-int " slot-address-bits" property
+  h# 3f encode-int " burst-sizes" property
+  h# ffee7000 encode-int " address" property
   h# 0 encode-int h# 0 encode-int encode+ h# 0 encode-int encode+ h# 30000000 encode-int encode+ h# 10000000 encode-int encode+
    h# 1 encode-int encode+ h# 0 encode-int encode+ h# 0 encode-int encode+ h# 40000000 encode-int encode+ h# 10000000 encode-int encode+
    h# 2 encode-int encode+ h# 0 encode-int encode+ h# 0 encode-int encode+ h# 50000000 encode-int encode+ h# 10000000 encode-int encode+
diff --git a/drivers/obio.c b/drivers/obio.c
index 72393f0..a118c11 100644
--- a/drivers/obio.c
+++ b/drivers/obio.c
@@ -154,6 +154,11 @@ ob_nvram_init(unsigned long base, unsigned long offset)
 
     nvram = (char *)ob_reg(base, offset, NVRAM_SIZE, 1);
 
+    PUSH((unsigned long)nvram);
+    fword("encode-int");
+    push_str("address");
+    fword("property");
+    
     memcpy(&nv_info, nvram, sizeof(nv_info));
 
     printk("Nvram id %s, version %d\n", nv_info.id_string, nv_info.version);
@@ -251,6 +256,22 @@ ob_nvram_init(unsigned long base, unsigned long offset)
         push_str("icache-associativity");
         fword("property");
 
+
+        PUSH(0x20);
+        fword("encode-int");
+        push_str("ecache-line-size");
+        fword("property");
+
+        PUSH(0x4000);
+        fword("encode-int");
+        push_str("ecache-nlines");
+        fword("property");
+
+        PUSH(1);
+        fword("encode-int");
+        push_str("ecache-associativity");
+        fword("property");
+	
         PUSH(2);
         fword("encode-int");
         push_str("ncaches");
@@ -276,6 +297,8 @@ ob_nvram_init(unsigned long base, unsigned long offset)
         push_str("mid");
         fword("property");
 
+	
+	
         fword("finish-device");
     }
 }