pcipost.asm

AWARD BIOS源代码,支持的CHIPSET请看文件,有同型号的板子烧上去就可以跑

	endif;	COMBINE_ISA_ROM

		call	init_isa_roms			;R23

;R21B		call	Shadow_C8_To_DF			;R21A
		call	Shadow_C8_To_DF			;R68

;R82	ifndef	CT_SHADOW_RW_HOOK_SUPPORT
;R82		F000_CALL Ct_C8_To_DF_R
;R82	else	;CT_SHADOW_RW_HOOK_SUPPORT
		call	Shadow_C8_To_DF_R
;R82	endif	;CT_SHADOW_RW_HOOK_SUPPORT

		call	Invalidate_Shadow_Seg		;invalidate whole shadow seg
							;i.e. shadow unit = 16K(32K)
							;     ==> invalidate whole
							;	  16k(32k) even if it
							;	  is not totally used!
		mov	si, 1
		call	EDisable_UnUsed_Shadow

;R82 - starts
ifdef	SHADOW_UNIT_64K
ifdef	USB_SUPPORT
;R92B;R92		cmp	byte ptr LMEM_RESERVED[bp], 0	;C8-CF reserved by USB?
;R92B;R92		jne	@F				;yes!
;R92B;R92 - start
;R92B		test	byte ptr LMEM_RESERVED[bp],0f0h	;C8-CF reserved by USB?	
;R92B		jnz	short @F 			;yes!	;R92A
;R92B;R92A		jz	@F				;yes!	
;R92B;R92 - end
;R92B	;Set shadow write-protected, if no USB legacy occupied C-segment.
;R92B		call	F_C000_Shadow_R
;R92B	@@:
;R92B - start
		cmp	byte ptr PCI_VGA_FOUND[bp], VGA_DEVICE_EXIST ;PCI VGA existed
		jne	short @F
;R92C		test	byte ptr LMEM_RESERVED[bp],0fh	;C8-CF reserved by USB?	
		test	byte ptr LMEM_RESERVED[bp],0ffh	;C8-CF reserved by USB?	;R92C
		jnz	short @F 			;yes!
	;Set shadow write-protected, if no USB legacy occupied C-segment.
		call	F_C000_Shadow_R	
	@@:
;R92B - end
endif	;USB_SUPPORT
endif	;SHADOW_UNIT_64K
;R82 - endif

;Enable/Disable VGA Palette snoop according to setup

		cmp	byte ptr PCI_VGA_FOUND[bp], VGA_DEVICE_EXIST ;PCI VGA existed
		jne	No_PciVga_Found

		mov	si, offset Vga_Snoop_Item
		call	F000_GetItem_Value
		or	al, al
		jz	No_VgaSnoop

		mov	cx, PCI_VGA_INFO[bp]	;ah = bus no. al=dev+fun no
		mov	bh, ch			;bus no.
		xchg	ch, cl
		mov	cl, 04H			;command register
		F000_CALL Aget_CfgSpace_Word
		or	al, 20H			;enable VGA snoop
		F000_CALL ASet_CfgSpace_Word
No_VgaSnoop:
No_PciVga_Found:

IF	RELEASE_E000_FOR_PCI
;--------------------------------------------------------------
;clear the un-used E0000-E7FFF shadow RAM to FFh for EMM386 UMB
;--------------------------------------------------------------

		mov	al, LMEM_RESOURCE[bp+3]	;save for atbase.asm
						;to check if E000 shadow RAM
						; occupied by PCI ROM
		mov	si, offset E000_USED_BY_PCI
		mov	cs:[si], al

		mov	cx, 08000h		;32k to clear
		mov	di, 0E000h		;starting from E000h
	@@:
		or	al, al
		jz	@F
		shr	al, 1
		add	di, 100h		;update starting addr. to clr
		sub	cx, 1000h		;add 4k more to clear
		jmp	@B
	@@:
		or	ch, ch
		jz	No_Need_Clear_E0
		mov	es, di			;Clear shadow with 0FFh
		xor	di, di			;Clear shadow with 0FFh
		cld				;Clear shadow with 0FFh
		mov	al, -1			;Clear shadow with 0FFh
		rep	stosb			;Clear shadow with 0FFh

	No_Need_Clear_E0:

		F000_CALL E000_64k_Shadow_R

ENDIF	;RELEASE_E000_FOR_PCI

		mov	byte ptr LMEM_FOR_ROM_FLG[bp], 1

;R33;R09 - start
;R33ifdef	Trend_AntiVirus
;R33		pushad
;R33;R09A		push	di
;R33		push	es
;R33		push	ds
;R33
;R33;R09A - start
;R33		mov	si,offset Virus_Item	;virus protection setup item
;R33		call	F000_GetItem_Value	;read CMOS setting
;R33		or	al,al			;virus protection enabled ?
;R33		jnz	Not_trend		;no skip virus ROM initial
;R33;R09A - end
;R33
;R33		mov	di, (07h+1)*4		;Cbrom /vrs number ID
;R33		call	POST_decompress		;Decompress to 4000:0
;R33		jc	Not_trend
;R33
;R33		push	4000h
;R33		pop	ds
;R33		mov	cl, ds:[2]     		;get rom size of 4000:2
;R33		pop	ds
;R33		push	ds			;balance stack	;R09A
;R33
;R33		mov	al, cl
;R33		shr	cl, 3			;patch 4k rom size
;R33		and	al, 07h
;R33		or	al, al
;R33		jz	short @f
;R33		inc	cl
;R33	@@:
;R33		call	EGet_Available_LMEM	;ask for LOW MEM
;R33		jc	Not_trend		;no shadow available
;R33
;R33		push	cx
;R33		dec	cx
;R33		mov	eax, 0FFFFFFFEh
;R33		shl	eax, cl
;R33		not	eax
;R33
;R33		mov	ecx, AVAIL_LMEM_ADDR[bp]
;R33		shr	ecx, 12
;R33		sub	cl, 0C8h
;R33		shl	eax, cl
;R33		or	LMEM_RESERVED[bp], eax
;R33
;R33		push	0f000h
;R33		pop	es
;R33		F000_call	F000_Shadow_W		;Get a space to save
;R33		mov	si, offset Virus_Used_Shadow	;used shadow
;R33
;R33;Enable using shadow block that can be read and write
;R33;R26		pop	cx
;R33;R26		push	cx
;R33
;R33;R26 - statr
;R33		F000_call Ct_Shadow_Unit
;R33		mov	di, 0fch
;R33		mov	ax, 4
;R33		cmp	cx, 4000h
;R33		je	short @F
;R33		mov	di, 0f8h
;R33		mov	ax, 8
;R33@@:
;R33;R26 - end
;R33;record region of shadow
;R33
;R33		mov	ebx, AVAIL_LMEM_ADDR[bp]
;R33		shr	ebx, 12			;BL is Trend_AntiVirus start
;R33		mov	bh, bl
;R33;R26		and	bh, 0fch		;BH is shadow open start
;R33
;R33		push	di			;R26
;R33		pop	cx			;R26
;R33		and	bh, cl			;R26
;R33
;R33		mov	dl, bl
;R33
;R33		pop	cx			;R26
;R33		push	cx			;R26
;R33
;R33		add	dl, cl			;DL is Trend_AntiVirus end
;R33		mov	dh, dl
;R33
;R33		push	ax			;R26
;R33
;R33		mov	ah, dl
;R33		and	ah, 03h
;R33		or	ah, ah
;R33		jz	short @f
;R33		inc	dh			;DH is shadow end
;R33	@@:
;R33		pop	cx    			;R26Get AX value
;R33		push	bx
;R33	@@:
;R33		pushad
;R33		mov	dh, bh
;R33		F000_Call	Ct_Shadow_RW
;R33		popad
;R33		mov	ah, bh
;R33;R26		add	bh, 04h
;R33		add	bh, cl			;R26
;R33		cmp	bh, dh
;R33		jb	short @b
;R33		pop	bx
;R33		mov	al, bh
;R33		mov	es:[si], ax	 	;store ax to Virus_Used_Shadow
;R33
;R33		F000_call	F000_Shadow_R
;R33
;R33		pop	cx
;R33		shl	ecx, 11			;Move times by word
;R33		mov	si,4000h		;SI: Source SEG
;R33		mov	edi,AVAIL_LMEM_ADDR[bp]	;EDI: available shadow RAM
;R33		shr	edi,4			;DI: destination SEG
;R33		F000_CALL Move_Codes
;R33		call 	Init_ROM		;invoke virus ROM
;R33
;R33Not_trend:					;R09A
;R33		pop	ds			;R09A
;R33		pop	es
;R33;R09A		pop	di
;R33	     	popad
;R33;R09ANot_trend:
;R33endif; Trend_AntiVirus
;R33;R09 - end

		call	PatchRomAlignMent		;R22
;R78A		call	Set_IDE_DMA_Capable		;R78
;R91 - starts
	ifdef	PciLanROM_Control
		call	Restore_Onboard_PCI_Lan
	endif	;PciLanROM_Control
;R91 - ends
		POP_ALL

		ret

EPciRom_After_Init	endp

;R91 - starts
ifdef	PciLanROM_Control
		PUBLIC	Restore_Onboard_PCI_Lan
Restore_Onboard_PCI_Lan	PROC	near

		mov	byte ptr CURRENT_BUS_NO[bp], 0
		mov	ch, (Onboard_PCI_LAN) shl 3	;device/function number
		mov	cl, 04h				;register = 4 (command)
;R91A		mov	ax,Xgroup_Segment
;R91A		mov	ds,ax
;R91A		lea	si,LAN_COMMAND_WORD		;get offset
;R91A		mov	ax,[si]				;restore value in AX
		mov	ax,POST_Stack_Temp_Word[bp]	;R91A restore value in AX
		call	fProc_Set_CfgSpace_Word

		ret

Restore_Onboard_PCI_Lan	ENDP
endif	;PciLanROM_Control
;R91 - ends

;R78A;R78 start
;R78ASet_IDE_DMA_Capable	proc	far
;R78A
;R78A		xor	bh,bh			;bus 0
;R78A		xor	ch,ch			;start device 0,function 0
;R78ASIDC_Loop:
;R78A		mov	cl,0ah			;offset 0Ah (class code)
;R78A		F000_call	AGet_CfgSpace_Word
;R78A		cmp	ax,0ffffh		;invalid?
;R78A		je	short Next_Device	;Yes,skip
;R78A
;R78A		cmp	ax,101h			;IDE device?
;R78A		jne	short Next_Device	;Yes,skip
;R78A
;R78A		mov	cl,20h			;offset 20h (DMA base port)
;R78A		F000_call	AGet_CfgSpace_Word
;R78A		and	ax,0fff0h		;isolate useful bits
;R78A		jz	short Next_Device	;invalid then skip
;R78A
;R78A		mov	dx,ax			;DX = base port
;R78A		and	dx,0fff0h		;isolate useful bits
;R78A		add	dl,2			;set to status register of primary
;R78A		in	al,dx			;get original data
;R78A		or	al,60h			;set drive 0,1 DMA capable
;R78A		out	dx,al			;send to port
;R78A
;R78A		add	dl,8			;set to status register of secondary
;R78A		in	al,dx			;get original data
;R78A		or	al,60h			;set drive 0,1 DMA capable
;R78A		out	dx,al			;send to port
;R78ANext_Device:
;R78A		inc	ch			;next device and function
;R78A		jnz	short SIDC_Loop		;not exceed then continue
;R78A
;R78A		ret
;R78ASet_IDE_DMA_Capable	endp
;R78A;R78 end

;R23 START
;[]==============================================================[]
;INIT_ISA_ROMS_ADDR:
;Input : none
;Output: None
;NOTE:This func is CBROM /isa with assign address.(40A0h to 40A3h)
;[]==============================================================[]
		ALIGN	4
INIT_ISA_ROMS_ADDR	proc	near
		push	ds
		push	es
		push	bp

		mov	bx,Temp_EXP_Seg			;cbrom table segment
		mov	es,bx
		mov	di,(0a0h+1)*4			;cbrom /isa table offset
							;start
next_isa_rom_addr:
		push	di
		mov	ebx,es:[di+Temp_EXP_Off]
		or	ebx,ebx
		jz	short No_rom_exit
		cmp	bx,0ffffh
		je	short No_rom_exit

		call	combined_isa_addr	;cbrom /isa compress address
		cli
		call	E000_A20_On
		call	E000_Enter_Prot_mode		;enter protected mode
		call	E000_Back_Real_Mode		;R47
		xor	edx,edx
		mov	dx, ds:[ebx+0fh]		;assign address(offset)
		shl	edx, 4
		mov	AVAIL_LMEM_ADDR[bp], edx
		mov	word ptr ds:[ebx+0fh], 0	;clear offset to decompress
;R47		call	E000_Back_Real_Mode
		call	E000_A20_Off

		or	edx,edx				;have address?
		jz	short No_rom_exit

		call	post_decompress
		jc	short No_rom_exit		;R23A
		call	get_rom_size
		call	lmem_flg_mask
		test	eax,LMEM_RESOURCE[bp]
		jnz	short No_rom_exit
		or	LMEM_RESOURCE[bp], eax
		call	copy_rom_shadow_init
No_rom_exit:
		pop	di
		add	di, 4
		cmp	di, (0a3h+1)*4		     ;cbrom /isa table offset
						     ;end
		jb	next_isa_rom_addr

		pop	bp
		pop	es
		pop	ds
		ret
INIT_ISA_ROMS_ADDR	endp
;[]==============================================================[]
;INIT_ISA_ROMS:
;Input : none
;Output: None
;NOTE:This func is CBROM /isa not assign address.(40A4h to 40A7h)
;[]==============================================================[]
		ALIGN	4
Init_ISA_ROMS	proc	near
		push	ds
		push	es
		push	bp

		mov	bx,Temp_EXP_Seg		     ;cbrom table segment
		mov	es,bx
		mov	di,(0a4h+1)*4		     ;cbrom /isa table offset
						     ;start
next_isa_rom:
		push	di
		mov	ebx,es:[di+Temp_EXP_Off]
		or	ebx,ebx
		jz	short No_isa_rom_exit
		cmp	bx,0ffffh
		je	short No_isa_rom_exit

		call	post_decompress
		jc	short No_isa_rom_exit		;R23A
		call	get_rom_size
		call	EGet_Available_LMEM 		;request low mem
		jc	No_isa_rom_exit			;no shadow available
		call	copy_rom_shadow_init
No_isa_rom_exit:
		pop	di
		add	di, 4
		cmp	di, (0a7h+1)*4		      ;cbrom /isa table offset
						      ;end
		jb	short next_isa_rom

		pop	bp
		pop	es
		pop	ds
		ret
Init_ISA_ROMS	endp
;[]==============================================================[]
;combined_isa_addr:
;Input : DI : cbrom number. e.g -> 40A0h , DI = (0A0h+1)*4
;Output: EBX : physical address
;[]==============================================================[]
		ALIGN	4
combined_isa_addr	proc	near
;R55ifdef	Flash_2M_support
;R55		mov	ebx, 160000h			;extra option ROM temp address
;R55		cmp	es:[di+Temp_EXP_Off+2], 8000h	;first segment
;R55		je	@F				;Yes, skip
;R55		add	ebx, 10000h			;set to next sgment (170000h)
;R55@@:
;R55		add	bx, es:[di+Temp_EXP_Off]	;set to physical address
;R55else	;Flash_2M_support
;R55		xor	ebx, ebx
;R55		mov	bx, es:[di+Temp_EXP_Off+2]
;R55		shl	ebx, 4
;R55		add	bx, es:[di+Temp_EXP_Off]	;set to physical address
;R55endif	;Flash_2M_support
		mov	ebx,es:[di+Temp_EXP_Off]	;R55
ifdef	Flash_2M_support				;R55
		add	ebx,0e0000h			;R55
endif	;Flash_2M_support				;R55
		ret
combined_isa_addr	endp
;[]==========================================================