xnu-792.22.5.tar.gz

[apple/xnu.git] / osfmk / console / i386 / text_console.c

diff --git a/osfmk/console/i386/text_console.c b/osfmk/console/i386/text_console.c
index cca64edcc3c7224a83e90699e9dbc5b1b2639bdc..ba0fc3392632ac2069b994d4fe0df43a426c7f31 100644 (file)
--- a/osfmk/console/i386/text_console.c
+++ b/osfmk/console/i386/text_console.c
@@ -32,7 +32,7 @@
  * VGA text console support.
  */
 
-#include <i386/pio.h>
+#include <architecture/i386/pio.h>
 #include <console/video_console.h>
 #include "text_console.h"
 
@@ -104,6 +104,7 @@ move_up( csrpos_t  from,
          csrpos_t  to,
          int       count)
 {
+    if (vram_start == 0) return;
     kd_slmscu( vram_start + from, vram_start + to, count );
 }
 
@@ -117,6 +118,7 @@ move_down( csrpos_t  from,
            csrpos_t  to,
            int       count )
 {
+    if (vram_start == 0) return;
     kd_slmscd( vram_start + from, vram_start + to, count );
 }
 
@@ -130,6 +132,7 @@ clear_block( csrpos_t  start,
              int       size,
              char      attr)
 {
+    if (vram_start == 0) return;
     kd_slmwd( vram_start + start, size,
               ((unsigned short) attr << 8) + SPACE_CHAR);
 }
@@ -177,6 +180,7 @@ display_char( csrpos_t    pos,      /* where to put it */
               char        ch,       /* the character */
               char        attr )    /* its attribute */
 {
+    if (vram_start == 0) return;
     *(vram_start + pos)     = ch;
     *(vram_start + pos + 1) = attr;
 }