gapm12.oem

<BIOS研发技术剖析>书的源代码,包括完整的BIOS汇编语言源程序.

get_ac_battery_status_v12	endp

;---------------------------------------------------------------;
;*****************************************************************;
;*****************************************************************;
;**								**;
;**	(C)Copyright 1985-1996, American Megatrends Inc.	**;
;**								**;
;**			All Rights Reserved.			**;
;**								**;
;**		6145-F, Northbelt Parkway, Norcross,		**;
;**								**;
;**		Georgia - 30071, USA. Phone-(770)-246-8600.	**;
;**								**;
;*****************************************************************;
;*****************************************************************;
;---------------------------------------------------------------;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;---------------------------------------------------------------;
;		GET_PCMCIA_SOCKET_POWER_DOWN_INFO		;
;---------------------------------------------------------------;
;	Input : (DS) PM BIOS data segment			;
;		(BX) PM event being posted (according to APM specs)
;		(DX) bit map for PM event being posted		;
;		STACK PRESENT					;
;	Output: (CX) for normal system resume notification (bx =;
;		     0003h) or critical resume system notificat-;
;		     ion (bx = 0004h)......			;
;		     bit 0 0...pcmcia socket was powered on in	;
;			       suspend state			;
;		     bit 0 1...pcmcia socket was powered off in	;
;			       suspend state			;
;		     bits 15-1...reserved (must be 0)		;
;		(CX) ignore for any other event posting		;
;	Register destroyed : (EAX),(EBX),(ECX),(EDX),(ESI),(EDI);
; NOTE :							;
;  *  Control comes here from core smi/irq apm handler.		;
;  *  Control to this hook comes in response to apm get pm event;
;     call (APM function # 0Bh).				;
;  *  It's a notification from core apm handler about the APM	;
;     event being posted to APM driver to return PCMCIA socket	;
;     power on/off condition in suspend state.			;
;  *  Knowing whether the socket was powered on or off during	;
;     the suspend state allows the APM driver or operating system
;     to optimize its resume handling of PCMCIA devices. This can
;     be particularly important if a PCMCIA modem device is used;
;     to resume the system via the resume-on-ring-indicator feature
;  *  You need to implement this hook for APM 1.2 compatability.;
;     Default implementation is 'XOR CX,CX'			;
;				'RET'				;
;---------------------------------------------------------------;

get_pcmcia_socket_power_down_info	proc	near

	xor	cx,cx				; PCMCIA socket was powered on in the suspend state
	ret

get_pcmcia_socket_power_down_info	endp

;---------------------------------------------------------------;
;*****************************************************************;
;*****************************************************************;
;**								**;
;**	(C)Copyright 1985-1996, American Megatrends Inc.	**;
;**								**;
;**			All Rights Reserved.			**;
;**								**;
;**		6145-F, Northbelt Parkway, Norcross,		**;
;**								**;
;**		Georgia - 30071, USA. Phone-(770)-246-8600.	**;
;**								**;
;*****************************************************************;
;*****************************************************************;
;---------------------------------------------------------------;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;---------------------------------------------------------------;
;			GET_PM_CAPABILITIES			;
;---------------------------------------------------------------;
;	Input : (DS) PM BIOS data segment			;
;		STACK PRESENT					;
;	Output: (CX) bit 0 1 ... system can enter global standby;
;				 (posts standby & standby resume)
;		     bit 1 1 ... system can enter global suspend;
;				 (posts suspend & suspend resume)
;		     bit 2 1 ... resume timer will wake up from	;
;				 standby state			;
;		     bit 3 1 ... resume timer will wake up from	;
;				 suspend state			;
;		     bit 4 1 ... resume on ring indicator (inter-
;				 nal COM or modem) will wake up	;
;				 from standby			;
;		     bit 5 1 ... resume on ring indicator (inte-;
;				 rnal COM or modem) will wake up;
;				 from suspend			;
;		     bit 6 1 ... PCMCIA Ring indicator will wake;
;				 up from standby		;
;		     bit 7 1 ... PCMCIA Ring indicator will wake;
;				 up from suspend		;
;		     bit 15-8... reserved (must be set to 0)	;
;		(BL) # of system batteries this machine supports;
;		     000h means no system battery		;
;		     001h means 1 system battery		;
;		     002h means 2 system battery		;
;		     and so on					;
;	Register destroyed : (EAX),(EBX),(ECX),(EDX),(ESI),(EDI);
; NOTE :							;
;  *  Control comes here from core smi/irq apm handler.		;
;  *  Control to this hook comes in response to apm get		;
;     capabilities call (APM function # 10h).			;
;  *  Information returned in this hook should return the	;
;     capabilities currently in effect, and not capabilities	;
;     which have been selected but require a system restart	;
;     before taking effect.					;
;  *  Capabilities may change as a result of changes via a setup;
;     utility or by the arrival or removal of devices. If power	;
;     capabilities change, the APM BIOS must post a capabilities;
;     change notification.					;
;  *  If APM BIOS returns from this function saying that it	;
;     supports global standby or global suspend power states, the
;     BIOS must post the appropriate request and resume events	;
;     when entering and leaving the supported power states.	;
;  *  If a system does not support a resume timer (ALARM resume);
;     the APM BIOS must not set any resume timer capability bits;
;     (bits 2,3). Similarly, if the system does not support	;
;     resume on ring indicator, the APM BIOS must not set any of;
;     the resume on ring indicator capability bits (bits 4,5,6,7)
;  *  You need to implement this hook for APM 1.2 compatability.;
;     Default implementation is 'MOV CX,000Bh'			;
;				'XOR BL,BL'			;
;				'RET'				;
;---------------------------------------------------------------;

get_pm_capabilities	proc	near

	mov	cx,0000000000111111b		; system can enter global standby state
						; system can enter global suspend state
						; resume timer will wake up from suspend
	xor	bl,bl				; no system battery
	ret

get_pm_capabilities	endp

;---------------------------------------------------------------;
;*****************************************************************;
;*****************************************************************;
;**								**;
;**	(C)Copyright 1985-1996, American Megatrends Inc.	**;
;**								**;
;**			All Rights Reserved.			**;
;**								**;
;**		6145-F, Northbelt Parkway, Norcross,		**;
;**								**;
;**		Georgia - 30071, USA. Phone-(770)-246-8600.	**;
;**								**;
;*****************************************************************;
;*****************************************************************;
;---------------------------------------------------------------;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;---------------------------------------------------------------;
;	     ENABLE_DISABLE_RESUME_ON_RING_INDICATOR		;
;---------------------------------------------------------------;
;	Input : (DS) PM BIOS data segment			;
;		(CX) 0000h disable resume on ring indicator	;
;		     0001h enable resume on ring indicator	;
;		STACK PRESENT					;
;	Output: NONE						;
;	Register destroyed : (EAX),(EBX),(ECX),(EDX),(ESI),(EDI);
; NOTE :							;
;  *  Control comes here from core smi/irq apm handler.		;
;  *  Control to this hook comes in response to apm enable/disable
;     Resume on Ring indicator call (APM function # 12h).	;
;  *  If resume on ring is disabled, it should disable all resume
;     on ring functionality, regardless of whether the ring	;
;     indication comes from mother board serial ports or modems,;
;     modems inserted into PCMCIA slots, or any other modem ring;
;     which the system is wired to accept as a wake up event.	;
;  *  You need to implement this hook for APM 1.2 compatability.;
;     Default implementation is 'RET'				;
;---------------------------------------------------------------;

enable_disable_resume_on_ring_indicator	proc	near
;;;;;;;;;;;;;; Note >>>>
	mov	byte ptr ds:[modem_ring],cl
;;;;;;;;;;;;; <<<<<<
	ret

enable_disable_resume_on_ring_indicator	endp

;---------------------------------------------------------------;
;*****************************************************************;
;*****************************************************************;
;**								**;
;**	(C)Copyright 1985-1996, American Megatrends Inc.	**;
;**								**;
;**			All Rights Reserved.			**;
;**								**;
;**		6145-F, Northbelt Parkway, Norcross,		**;
;**								**;
;**		Georgia - 30071, USA. Phone-(770)-246-8600.	**;
;**								**;
;*****************************************************************;
;*****************************************************************;
;---------------------------------------------------------------;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;		HOOK HOOK HOOK HOOK HOOK HOOK HOOK		;
;---------------------------------------------------------------;
;		  ENABLE_DISABLE_TIMER_BASED_REQ		;
;---------------------------------------------------------------;
;	Input : (DS) PM BIOS data segment			;
;		(CX) 0000h disable timer based request		;
;		     0001h enable timer based request		;
;		STACK PRESENT					;
;	Output: NONE						;
;	Register destroyed : (EAX),(EBX),(ECX),(EDX),(ESI),(EDI);
; NOTE :							;
;  *  Control comes here from core smi/irq apm handler.		;
;  *  Control to this hook comes in response to apm enable/disable
;     timer based request (APM function # 13h).			;
;  *  If timer based request is disabled, then APM BIOS must not;
;     generate any more standby or suspend request based on	;
;     inactivity timers. This is desirable for the operating	;
;     system to use its own techniques to determine inactivity	;
;     and to generate such low power requests of its own.	;
;     Once disabled, APM BIOS may still post normal system or	;
;     user standby or suspend requests only in the event of a	;
;     user initiated action, such as lid closings, suspend button
;     pushes etc. Critical suspend requests due to imminent	;
;     battery failure are also still allowed.			;
;  *  You need to implement this hook for APM 1.2 compatability.;
;     Default implementation is 'RET'				;
;---------------------------------------------------------------;

enable_disable_timer_based_req	proc	near
	test	cx,1
	jz	disable_ide_timer
  
        mov	al,q_ide_time_out
	call	check_cmos_data_far
	mov	ah,0ch					; in 5 second units - so multiply with 12 to make minutes
	mul	ah
	jnz	@f
	dec	ax					; disabled
@@:
	mov	byte ptr ds:gpm_ide_idle_timeout,al
	jmp	short @f
disable_ide_timer:
	mov	byte ptr ds:gpm_ide_idle_timeout,-1
@@:
	ret

enable_disable_timer_based_req	endp

;---------------------------------------------------------------;
;*****************************************************************;
;*****************************************************************;
;**								**;
;**	(C)Copyright 1985-1996, American Megatrends Inc.	**;
;**								**;
;**			All Rights Reserved.			**;
;**								**;
;**		6145-F, Northbelt Parkway, Norcross,		**;
;**								**;
;**		Georgia - 30071, USA. Phone-(770)-246-8600.	**;
;**								**;
;*****************************************************************;
;*****************************************************************;
;---------------------------------------------------------------;