diff -rupN powerpc/ieee1275/ofconsole.c sparc64/ieee1275/ofconsole.c
--- powerpc/ieee1275/ofconsole.c	2005-06-21 04:33:52.000000000 +0200
+++ sparc64/ieee1275/ofconsole.c	2005-07-13 10:18:46.000000000 +0200
@@ -120,7 +120,7 @@ static int
 grub_ofconsole_readkey (int *key)
 {
   char c;
-  int actual = 0;
+  grub_ssize_t actual = 0;
 
   grub_ieee1275_read (stdin_ihandle, &c, 1, &actual);
 
@@ -207,6 +207,49 @@ grub_ofconsole_getxy (void)
   return ((grub_curr_x - 1) << 8) | grub_curr_y;
 }
 
+static grub_uint16_t
+grub_ofconsole_getwh (void)
+{
+  grub_ieee1275_ihandle_t config;
+  char *val;
+  grub_ssize_t lval;
+  static grub_uint8_t w, h;
+
+  if (w && h) /* Once we have them, don't ask them again.  */
+    {
+      if (! grub_ieee1275_open ("/config", &config) &&
+          config != -1)
+        {
+          if (! grub_ieee1275_get_property_length (config, "screen-#columns",
+                                                   &lval) && lval != -1)
+            {
+              val = grub_malloc (lval);
+              if (! grub_ieee1275_get_property (config, "screen-#columns",
+                                            val, lval, 0))
+                w = (grub_uint8_t) grub_strtoul (val, val + lval, 10);
+              grub_free (val);
+            }
+          if (! grub_ieee1275_get_property_length (config, "screen-#rows",
+                                                   &lval) && lval != -1)
+            {
+              val = grub_malloc (lval);
+              if (! grub_ieee1275_get_property (config, "screen-#rows",
+                                                val, lval, 0))
+                h = (grub_uint8_t) grub_strtoul (val, val + lval, 10);
+              grub_free (val);
+            }
+        }
+    }
+
+  /* XXX: Default values from OpenBoot on my U10.  */
+  if (! w)
+    w = 80;
+  if (! h)
+    h = 34;
+
+  return (w << 8) | h;
+}
+
 static void
 grub_ofconsole_gotoxy (grub_uint8_t x, grub_uint8_t y)
 {
@@ -222,6 +265,8 @@ static void
 grub_ofconsole_cls (void)
 {
   /* Clear the screen.  */
+  if (grub_env_get ("nocls"))
+    return;
   grub_ofconsole_writeesc ("\e[2J");
   grub_gotoxy (0, 0);
 }
@@ -241,8 +286,8 @@ grub_ofconsole_refresh (void)
 static grub_err_t
 grub_ofconsole_init (void)
 {
-  char data[4];
-  grub_size_t actual;
+  unsigned char data[4];
+  grub_ssize_t actual;
   int col;
 
   if (grub_ieee1275_get_property (grub_ieee1275_chosen, "stdout", data,
@@ -287,6 +332,7 @@ static struct grub_term grub_ofconsole_t
     .checkkey = grub_ofconsole_checkkey,
     .getkey = grub_ofconsole_getkey,
     .getxy = grub_ofconsole_getxy,
+    .getwh = grub_ofconsole_getwh,
     .gotoxy = grub_ofconsole_gotoxy,
     .cls = grub_ofconsole_cls,
     .setcolorstate = grub_ofconsole_setcolorstate,