aboutsummaryrefslogtreecommitdiffstats
path: root/core/cleanup.inc
diff options
context:
space:
mode:
Diffstat (limited to 'core/cleanup.inc')
-rw-r--r--core/cleanup.inc54
1 files changed, 54 insertions, 0 deletions
diff --git a/core/cleanup.inc b/core/cleanup.inc
new file mode 100644
index 00000000..dca6491a
--- /dev/null
+++ b/core/cleanup.inc
@@ -0,0 +1,54 @@
+;; -----------------------------------------------------------------------
+;;
+;; Copyright 2007-2008 H. Peter Anvin - All Rights Reserved
+;;
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+;; Boston MA 02111-1307, USA; either version 2 of the License, or
+;; (at your option) any later version; incorporated herein by reference.
+;;
+;; -----------------------------------------------------------------------
+
+;;
+;; cleanup.inc
+;;
+;; Some final tidying before jumping to a kernel or bootsector
+;;
+
+ section .text
+;
+; cleanup_hardware:
+;
+; Shut down anything transient. *No segment assumptions*.
+; Can trash any registers.
+;
+cleanup_hardware:
+ pushad
+;
+; Linux wants the floppy motor shut off before starting the kernel,
+; at least bootsect.S seems to imply so. If we don't load the floppy
+; driver, this is *definitely* so!
+;
+ xor ax,ax
+ xor dx,dx
+ int 13h
+
+%if 0 ; This bug report has not been substantiated!
+; Vmware crashes if we scroll in the decompressor! Try to detect vmware
+; and if it is Vmware, clear the screen...
+ mov eax,'VMXh'
+ xor ebx, ebx
+ mov ecx, 10 ; Get version
+ mov dx, 'VX'
+ in eax, dx
+ cmp ebx, 'VMXh'
+ jne .no_vmware
+
+ mov ax,0x0003 ; Set mode (clear screen/home cursor)
+ int 10h
+.no_vmware:
+%endif
+
+ popad
+ ret