1 files changed, 102 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/modules/poweroff.asm b/contrib/syslinux-4.02/modules/poweroff.asm
new file mode 100644
index 0000000..f4f19a2
--- /dev/null
+++ b/contrib/syslinux-4.02/modules/poweroff.asm
@@ -0,0 +1,102 @@
+; ****************************************************************************
+;
+;  poweroff.asm
+;
+;   Copyright 2009 Sebastian Herbszt
+;
+;  APM poweroff module.
+;
+;  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.
+;
+; ****************************************************************************
+
+		absolute 0
+pspInt20:	resw 1
+pspNextP:	resw 1
+		resb 124
+pspCmdLen:	resb 1
+pspCmdArg:	resb 127
+
+		section .text
+		org	0x100
+
+_start:
+		mov ax,5300h	; APM Installation Check (00h)
+		xor bx,bx	; APM BIOS (0000h)
+		int 15h
+		jnc check_sig
+
+		mov bx, msg_notpresent
+		jmp error
+
+check_sig:
+		cmp bx,504Dh	; signature 'PM'
+		je check_ver
+
+		mov bx, msg_notpresent
+		jmp error
+
+check_ver:
+		cmp ax,0101h	; Need version 1.1+
+		jae check_state
+
+		mov bx, msg_notsup
+		jmp error
+
+check_state:
+		test cx,8	; bit 3 APM BIOS Power Management disabled
+		jz connect
+
+		mov bx, msg_pmdisabled
+		jmp error
+
+connect:
+		mov ax,5301h	; APM Real Mode Interface Connect (01h)
+		xor bx,bx	; APM BIOS (0000h)
+		int 15h
+		jnc connect_ok
+
+		mov bx, msg_connect
+		jmp error
+
+connect_ok:
+		mov ax,530Eh	; APM Driver Version (0Eh)
+		xor bx,bx	; APM BIOS (0000h)
+		mov cx,0101h	; APM Driver version 1.1
+		int 15h
+		jnc apm0101_check
+
+		mov bx, msg_notsup
+		jmp error
+
+apm0101_check:
+		cmp cx,0101h	; APM Connection version
+		jae apm0101_ok
+
+		mov bx, msg_notsup
+		jmp error
+
+apm0101_ok:
+		mov ax,5307h	; Set Power State (07h)
+		mov bx,0001h	; All devices power managed by the APM BIOS
+		mov cx,0003h	; Power state off
+		int 15h
+		jnc off
+
+		mov bx, msg_failed
+
+error:
+		mov ax,2
+		int 22h
+off:
+		ret
+
+msg_notpresent:	db 'APM not present.',0dh,0ah,0
+msg_notsup:	db 'APM 1.1+ not supported.',0dh,0ah,0
+msg_pmdisabled:	db 'Power management disabled.',0dh,0ah,0
+msg_connect:	db 'APM RM interface connect failed.',0dh,0ah,0
+msg_failed:	db 'Power off failed.',0dh,0ah,0