diff --git a/include/grub/ieee1275/ieee1275.h b/include/grub/ieee1275/ieee1275.h
index 5c06025..e73c516 100644
--- a/include/grub/ieee1275/ieee1275.h
+++ b/include/grub/ieee1275/ieee1275.h
@@ -89,6 +89,15 @@ enum grub_ieee1275_flag
 
   /* Open Hack'Ware stops when trying to set colors */
   GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS,
+
+  /* Open Hack'Ware stops when grub_ieee1275_interpret is used.  */
+  GRUB_IEEE1275_FLAG_CANNOT_INTERPRET,
+
+  /* Open Hack'Ware has no memory map, just claim what we need.  */
+  GRUB_IEEE1275_FLAG_FORCE_CLAIM,
+
+  /* Open Hack'Ware don't support the ANSI sequence.  */
+  GRUB_IEEE1275_FLAG_NO_ANSI,
 };
 
 extern int EXPORT_FUNC(grub_ieee1275_test_flag) (enum grub_ieee1275_flag flag);
diff --git a/kern/ieee1275/cmain.c b/kern/ieee1275/cmain.c
index 54a52b6..b5e2ba6 100644
--- a/kern/ieee1275/cmain.c
+++ b/kern/ieee1275/cmain.c
@@ -144,6 +144,9 @@ grub_ieee1275_find_options (void)
 	{
 	  grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_BROKEN_OUTPUT);
 	  grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_CANNOT_SET_COLORS);
+	  grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_CANNOT_INTERPRET);
+	  grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_FORCE_CLAIM);
+	  grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_ANSI);
 	}
     }
 }
diff --git a/kern/ieee1275/ieee1275.c b/kern/ieee1275/ieee1275.c
index 135b30e..2605901 100644
--- a/kern/ieee1275/ieee1275.c
+++ b/kern/ieee1275/ieee1275.c
@@ -390,6 +390,9 @@ grub_ieee1275_interpret (const char *command, grub_ieee1275_cell_t *catch)
   }
   args;
 
+  if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_INTERPRET))
+    return -1;
+
   INIT_IEEE1275_COMMON (&args.common, "interpret", 1, 1);
   args.command = (grub_ieee1275_cell_t) command;
 
diff --git a/kern/ieee1275/init.c b/kern/ieee1275/init.c
index b8f414b..dcaafa2 100644
--- a/kern/ieee1275/init.c
+++ b/kern/ieee1275/init.c
@@ -171,7 +171,26 @@ static void grub_claim_heap (void)
     return 0;
   }
 
-  grub_available_iterate (heap_init);
+  if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_CANNOT_INTERPRET))
+    {
+      grub_addr_t addr;
+      grub_uint32_t len;
+
+      addr = HEAP_MAX_ADDR - HEAP_MIN_SIZE;
+      len = HEAP_MIN_SIZE;
+
+      if (grub_claimmap (addr, len) < 0)
+        {
+          grub_error (GRUB_ERR_OUT_OF_MEMORY,
+                      "Failed to claim heap at 0x%llx, len 0x%llx\n",
+                      addr, len);
+          return;
+        }
+
+      grub_mm_init_region ((void *) addr, len);
+    }
+  else
+    grub_available_iterate (heap_init);
 }
 
 #ifdef __i386__
diff --git a/term/ieee1275/ofconsole.c b/term/ieee1275/ofconsole.c
index 3b269ce..9af4327 100644
--- a/term/ieee1275/ofconsole.c
+++ b/term/ieee1275/ofconsole.c
@@ -63,6 +63,9 @@ static int bgcolor = 0;
 static void
 grub_ofconsole_writeesc (const char *str)
 {
+  if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_ANSI))
+    return;
+
   while (*str)
     {
       char chr = *(str++);
@@ -284,11 +287,28 @@ static void
 grub_ofconsole_gotoxy (grub_uint8_t x, grub_uint8_t y)
 {
   char s[11]; /* 5 + 3 + 3.  */
-  grub_curr_x = x;
-  grub_curr_y = y;
 
-  grub_sprintf (s, "\e[%d;%dH", y + 1, x + 1);
-  grub_ofconsole_writeesc (s);
+  if (! grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_ANSI))
+    {
+      grub_curr_x = x;
+      grub_curr_y = y;
+
+      grub_sprintf (s, "\e[%d;%dH", y + 1, x + 1);
+      grub_ofconsole_writeesc (s);
+    }
+  else
+    {
+      if ((y == grub_curr_y) && (x == grub_curr_x - 1))
+        {
+          char chr;
+
+          chr = '\b';
+          grub_ieee1275_write (stdout_ihandle, &chr, 1, 0);
+        }
+
+      grub_curr_x = x;
+      grub_curr_y = y;
+    }
 }
 
 static void