pcipost.asm

<B>Award BIOS(Basic Input/Output System)(电脑启动时所必需)的源码</B>

;	[]===========================================================[]
;
;	NOTICE: THIS PROGRAM BELONGS TO AWARD SOFTWARE INTERNATIONAL(R)
;	        INC. IT IS CONSIDERED A TRADE SECRET AND IS NOT TO BE
;	        DIVULGED OR USED BY PARTIES WHO HAVE NOT RECEIVED
;	        WRITTEN AUTHORIZATION FROM THE OWNER.
;
; 	[]===========================================================[]
;

;----------------------------------------------------------------------------
;Rev	Date	 Name	Description
;----------------------------------------------------------------------------
;R111A	06/01/99 RAY	More for R111
;R111	05/31/99 RAY	Re-write PCI_IRQ_SELECTABLE option. It will assign
;			IRQs to devices according to PIRQx in the router 
;			instead of according to SLOT number.
;
;			To use this new feature:
;
;			1. Add "PCI_IRQ_SELECTABLE EQU 1" in BIOS.CFG
;			2. Prepare a table "FixedIrqItemTable" in anywhere
;			   of your chipset files which describe the corresponding PIRQx items
;				
;			   Example: 
;			   FixedIrqItemTable	LABEL	NEAR
;				db	1		 ;PIRQ-0
;				dw	offset PIRQ0_IRQ ;item offset 
;				db	2		 ;PIRQ-1
;				dw	offset PIRQ1_IRQ ;item offset 
;				db	3		 ;PIRQ-2
;				dw	offset PIRQ2_IRQ ;item offset 
;				db	4		 ;PIRQ-3
;				dw	offset PIRQ3_IRQ ;item offset 
;				db	5		 ;USB INT Pin
;				dw	offset PIRQ4_IRQ ;item offset 
;				db	-1		 ;end of table
;
;
;R110	05/31/99 RAY	Kill the switch NEW_PNP_SETUP because it is a assume
;			to be a default in BIOS 6.0
;R109	05/28/99 TNY	Fix system boot failure if 2 pieces DC39X SCSI card 
;			plugged.
;R108	05/24/99 TNY	Clear "EDX" before PCI/ROM initial for fixing 
;			PCI compliance (Ex:3Com BootRom LanCard)
;R80A	05/15/99 TNY	Fix USB node report conflict if "SHADOW_UNIT_64K"
;			option defined.
;R107	05/14/99 STV	Fixed "Init_Isa_Roms_addr" & "Init_Isa_Roms" some bug
;R105C	05/10/99 TNY	Fix IT8888 (P2I) bridge is not affected by NOGO,
;			so we must set IT8888 to subtractive mode earlier
;			for fixing ISA VGA fail.
;R95A	05/07/99 RCH	Fixed system hang up if Mylex DAC960 RAID controller
;			is plugged and PS2 mouse is not installed.
;
;R105B	05/06/99 TNY	We must call the "Patch_IT8888F" hook earlier for
;			fixing ISA VGA.
;R106	05/04/99 RCH	Fixed system hang up in POST while TI/PC1225 Cardbus
;			and ATI/Rage LT Pro AGP work together.
;
;R105A	04/20/99 TNY	Add IT8888F DMA channel programming followed by ITE.
;R105	04/16/99 TNY	Fix IT8888F (P2I bridge) MISA can not work.
;R82B	04/02/99 RCH	Fixed PCI/SCSI option ROM can not be initialized if
;			the VGA device number is 0CH and the SCSI device
;			number is 08H.
;
;R102A	04/01/99 TNY	"PCI_IRQ_SELECTABLE" only set INTA-D to be selectable.
;R104	03/26/99 RCH	Fixed system hang up while AHA2940/SCSI and RTL8139
;			/LAN are plugged together on ALi chipset.
;
;R103	03/26/99 TNY	Fix W83628F (P2I bridge) port 80h decode fail
;			problem.
;R102	03/25/99 RAY	Add slot5 to slot9 support for PCI_IRQ_SELECTABLE
;R101	03/22/99 RAY	Disable the IO resource assigned to P2P bridge if
;			no IO request is found behind this bridge.
;
;			This is added to solved the problem of Intel's
;			440BX & 440LX AGP bridge, which is not fully decoded,
;			will have problem installing NT4.0 with S3 PCI VGA
;
;			Note:
;			----
;			To disable a P2P bridge address, we simply use a
;			method of assigning a base IO address of 0F000h to
;			the bridge but with a limit of ZERO.
;
;R100	03/18/99 RCH	Don't assign IRQ 9 for built-in audio controller to
;			Patch VIA/686 south bridge bug. System will hang up
;			while installing Win98 if the audio use IRQ 9.
;R92C	03/18/99 TNY	Fixed coding error.
;R99	03/16/99 RAY	NO "Check_M1_CPU" if it is not 586 BIOS
;R98	03/15/99 TNY	Set PCI Latency time to be 20h (not 40h) for fixing
;			some VGA card compability issue.
;R97	03/11/99 RCH	Added Intel/ICH0 IDE controller checking.
;R96	03/09/99 RCH	1. Added Boot from LAN devices with Bootstrap Entry
;			   Vector (BEV) boot ROM support.
;			2. Fixed BIOS can not boot from Intel/559 boot ROM
;			   if the PnP/BEV Boot is enabled.
;R91A	03/08/99 KVN	Fixed lan_command byte restore wrong data.That reason
;			is the lann_command byte be temp stored in XGROUP, but
;			Xgroup will be clear in POST_82S, so it always restore
;			zero.Now we put it to stack of POST
;R95	03/04/98 JSN	Fixed Mylex DAC960 RAID controller card cannot work
;			successfully while the PS/2 mouse is not plugging and
;			used flash 2M support.
;R78A	03/04/99 KVN	Dont set IDE DMA capable status for all of IDE drive
;			that avoid ZIP read fail in NT with DMA driver (installed
;			service pack 4)
;R92B	03/03/99 TNY	Fixed R92 coding error.
;R85A	03/01/99 RIC	Fixed that VGA ROM added by CBROM can't be search in
;			follow case:
;			1. Add VGA ROM by using old CBROM.
;			2. VGA ID don't match with VGA ROM added by CBROM.
;			   (If VGA ID don't match with VGA ROM added by CBROM,
;			    BIOS will use first VGA ROM added by CBROM.)
;R92A	03/01/99 RCH	Fixed legacy USB not working after PCI ROM scanning
;			if the shadow unit is 64KB.
;R94	02/23/99 RCH	Fixed Avance Logic ALG2301 PCI VGA card failed with
;			ROM scanning. This card decode VGA ROM at address
;			0C0000H when command register is on even though the
;			ROM decode enable bit in config. space 30H is off.
;R93A	02/22/99 RCH	Also mask IRQ 14 of 8259 for first IDE channel.
;R93	02/11/99 RCH	Added a switch to mask 8259 for IRQ 15 if on-chip
;			second IDE channel is diabled for PIIX platforms.
;R92	02/10/99 TNY	Fix VGA BIOS corrupted if ISA VGA plugged.
;			(SHADOW_UNIT_64K)
;R91	02/10/99 RAY	Add BIOS.CFG swith: PciLanROM_Control. This switch
;			allows the user to decide whether to invoke the onboard
;			LAN chip's ROM or not
;
;R90	02/10/99 RAY	Support ISA VGA for chipset having shadow unit
;			64K
;R82A	02/10/99 RIC	Fixed that some VGA card use C8000-CFFFF address on
;			over 32K VGA BIOS.(ex: RIVA TNT AGP card)
;			It will cause other PCI ROM to hang in POST 52h.
;			So assign 64K(Don't assign 48K) for over 32K VGA BIOS
;			using.
;R89	02/08/99 RCH	Added AMD-750 IDE controller checking for release IRQ 14
;			& IRQ 15 if controller is disabled.
;
;R88	02/05/99 RCH 	Assign IRQ to PCI-TO-PCI bridge if requested.
;R73A	01/29/99 STV	Not define "linear_rom_support",Because BIOS ROM is Linear ROM.
;R87	01/27/99 RCH	Added STPC IDE controller checking for release IRQ 14
;			& IRQ 15 if controller is disabled.
;R68A	01/27/99 RAY	R68 Fix legacy-ISA's ROM shadowed fail which will
;			cause all ISA PnP ROM space to be forced to shadowed.
;			This is reported by a IBM token ring card cannot work
;			properly.
;
;R86	01/21/99 MCH	Added "No_Assign_IRQ5_For_PCILAN" define to avoid
;			PCI LAN Card work in IRQ5 failure with some chipsets.
;R85	01/20/99 RCH	Check option header (0AA55H) first then verify ROM
;			checksum to save POST time if the ROM image is
;			invalid.
;R84	01/15/99 KVN	Fixed ROM size return from decompress to be destroy.
;R83	01/13/99 RAY	Use Big real mode instead of protected mode during
;			serching for VGA BIOS. Some M/B hangs here!
;
;R82	12/28/98 RAY	1. Add SHADOW_UNIT_64K switch for chipsets supporting
;			   shadow in terms of 64K Unit.
;
;			2. Kill the switch: CT_SHADOW_RW_HOOK_SUPPORT so that
;			   from now on if you want to use PCIP_NEW.ASM, you
;			   have to provide "Ct_Shadow_RW" & "Ct_Shadow_RW"
;			   in the F000 Segment of PCICHIP.ASM
;
;R81	12/23/98 MCH	Fixed for most PCI/VGA have random dots/lines in the
;			screen while starting to install Win95/98 if Cyrix
;			6x86 M1/M2 CPU is used with PCI Peer Concurrency and
;			OnChip USB is enabled in VIA/VPX chipsets platform.
;			It needs to add "Patch_MX_CPU_For_PCI_Peer_Con_USB"
;			define in the BIOS.CFG for effectiveness.
;R80	12/22/98 RCH	Fixed wrong device node report for option ROM size
;			is not match with shadow unit if the shadow unit is
;			64KByte.
;R63B	12/25/98 AVN	Fixed SiS 5600/530/620 when IDE channel disable and
;			IRQ cannot release, because channel enable bits had
;			swap.
;R79	12/14/98 TNY	Add "WHITNEY_SPECIAL" option.
;			Reason:
;				It is exhibited to be truned on command register
;			before I/O & memory address assigned, otherwise the
;			system will hang-up.
;R78	12/09/98 KVN	Force set IDE DMA status register of capable bits for
;			windows NT service pack 4 to properly check DMA
;R77	12/09/98 TNY	Fix cache line size register of P2P bridge always be
;			2. (it should be 8)
;R76	12/08/98 RCH	Added Intel/ICH IDE controller checking.
;R57C	12/02/98 MIL	Enable Master bit for Cyrix CX55x0 Onboard P2P bridge.
;R75	12/02/98 MIL	Added code for Cyrix CX55x0 Chipset IDE Device.
;			Fixed IRQ 14/15 was assigned for PCI card when the
;			Two IDE Channel doesn't disable.
;R73	11/26/98 STV	Fixed BIOS ROM change to Linear ROM define "linear_rom_support".
;R72	11/16/98 RAY	No more	Reserve_Irq_For_PciBootDev
;R70	11/16/98 RCH	Temporarily patch system hang if the PPGA 370 CPU
;			(CPUID=0665H) is configured with clock ratio 6
;			(400Mhz) or 6.5(433Mhz)
;R68	11/05/98 RAY	Fix legacy-ISA's ROM shadowed fail.
;R63A	10/22/98 AVN	Support IRQ 14/15 was assigned for PCI card to all
;			SiS chipset.
;R56D	10/08/98 RCH	Rewrite routine for clearing PME# status to support
;			other devices (like MODEM etc.)
;
;R67	10/06/98 RAY	Some M/B wants to reserved E000h IO space for
;			their customers.
;
;			Solution
;			--------
;			Add compiler variable "PCI_IO_LIMIT" for BIOS.CFG
;			to config the top IO address which is appropriate.
;			In this case, add "PCI_IO_LIMIT EQ 0E000h" in
;			BIOS.CFG.
;
;			Note: this variable only applies to the new PCIPOST.ASM
;			      i.e. PCIP_NEW.ASM
;
;R66	10/02/98 RAY	Some M/B maker share the same "SCSI onboard BIOS"
;			for 2 different M/B w/ and w/o SCSI devices.
;			However the SCSI_SLOT location for the non-SCSI
;			device is a P2P bridge.
;
;			Here in the BIOS we do a checking for storage device
;			before we disable the device on that SLOT
;
;R64A	10/02/98 RIC	Add "No_ACPI_IRQ_Auto_Assign" definition for R64 code.
;R64	09/23/98 RIC	Change ACPI IRQ assign algorithm to Auto-assigned.
;			(This function is only support in VIA SouthBridge now)
;			If you want to use old algorithm, please define:
;			1."No_ACPI_IRQ_Auto_Assign" for disabled new algorithm.
;			2."ACPI_IRQ_Selectable" for enabled old algorithm.
;R63	09/22/98 RCH	Fixed IRQ 14/15 was assigned for PCI card when the
;			HDD is installed on secondary channel and there is
;			no device on primary channel for SiS chipset.
;R56C	09/22/98 RIC	Fix that WOL hang in POST 0Dh in some VIA mainboard
;			(with 596 SouthBridge).
;R62	09/18/98 RCH	Open IRQ 6 as available IRQ for PCI devices. If
;			platform need this feature, the value of
;			"AVAILABLE_PCI_IRQ" must be modifed also to have IRQ 6
;			available for assignment .
;R21C	09/11/98 RAY	Fixed ISA occupied address temporary shadowed
;			we invoking PCI ROM.
;
;			This bug was found when PCI SCSI & the M-System chip
;			were both installed. If the M-System(ISA) area was
;			shadowed, the system would hang up inside the SCSI
;			ROM since the M-System area was not only ROM but
;			some direct memory-map storage on the chip.
;
;R61	08/21/98 RCH	Added a switch to support onboard PCI VGA located on
;			PCI bus above "0" and the chipset support AGP.
;
;	Note : "R22C" & "R21B" are used to fix working failure for
;		"IBM ISA/PnP Token-Ring LAN card"
;R22C	08/21/98 RAY	Do not report device node for ISA ROM which size is
;			not matched with the shadow size
;
;R21B	08/21/98 RAY	Temporary removed the changes that R21 & R21A had been
;			made since they caused the ROM area assigned by ISA PnP
;			being shadowed.
;
;			Due to R21 & R21A fixed the combination of M-System
;			ROM & PCI SCSI ROM conflict & this kind of combination
;			is comparatively less that ISA PnP devices with ROM.
;			Further investigation on this will be carried out to
;			fix this combination.
;
;R56B	08/19/98 TNY	Always clear PME status is plugged LAN card support
;			PME#.
;			Method:
;				Rx(34h) is the power-management capabilities
;			pointer. And the Cap register bit 31-27 is the
;			PME-Support register ( 0 = No PME# supported).
;			If PME# supported , we can R/W the Cap register bit 47
;			to clear the PME status.
;R60	08/13/98 STV	Added ACARD SCSI ID for Force_ROM_For_Some_Devices func.
;R59	08/11/98 RCH	Patch system hang up while scanning onboard C&T 6XXXX
;			VGA ROM register if Intel MMO module for 430TX is
;			used.
;R58	08/06/98 RAY	Fixed PCI memory space conflict when VGA in bus 0 and
;			a lots of PCI cards behind P2P bridge with much memory
;			space requested.
;R56A	08/05/98 TNY	1.Fix some chipset WOL fail.
;			2.Fix WOL fail if two 558 LAN card plugged.
;R57A	07/29/98 RCH	Fixed USB legacy keyboard not working caused by R57
;R57	07/29/98 RCH	Don't turn on bus master bit before assigning resource
;			for PCI devices. It cause system hang up when COGNEX
;			MVS 8100 is plugged and system memory is 128Mb for
;			SiS5571 chipset.
;R56	07/28/98 TNY	Clear PCI LAN card's power-on status register
;			for fixing power-on fail next time.
;R55	07/23/98 KVN	Change method of decompressing in protect mode
;R53	07/16/98 KEN	Added delay between two memory write/read at routine
;			"Prepare_LMEM_Resource", otherwise the UMB will be
;			recognized as all RAM occupied if some ISA cards
;			installed.(e.g. Simple's PC card reader/writer)
;R51 	07/02/98 BAR  	Rewrite int19.
;R50	06/26/98 RCH	Disabled VGA ROM space decode immediately after
;			VGA BIOS is copied to buffer to fix display failure
;			for CirrusLogic CL7555 PCI VGA card.
;R49	06/03/98 TNY	Fix both AGP VGA card and P2P VGA card plugged, the
;			AGP VGA card always is the highest priolity display.

ifdef	MASM611
.MODEL  SMALL, BASIC
OPTION	PROC: PRIVATE
endif	;MASM611

.386P

		PAGE	56, 132
;.XLIST
		INCLUDE BIOS.CFG
		include	COMMON.EQU
		INCLUDE COMMON.MAC
		include	bsetup.inc
		include	fshadow.equ

ifndef	NO_PNP_PCI_AUTO
ifdef	PNP_BIOS
		PNP_PCI_AUTO	EQU	1
endif	;PNP_BIOS
endif;	NO_PNP_PCI_AUTO

ifdef	PCI_BUS

;R59 - start
  PATCH_ONBOARD_CT_6XXXX_VGA	=	0
 ifdef	NO_SCAN_ONBOARD_VGA_ROM
  PATCH_ONBOARD_CT_6XXXX_VGA	=	1
 endif;	NO_SCAN_ONBOARD_VGA_ROM
;R59 - end

IRQ12_LAST_FOR_PCI	EQU	1
SET_MPIRQ_TBL	=	0

ifdef	MP_SUPPORT
ifdef	NEW_INTEL_IOAPIC
SET_MPIRQ_TBL	=	1
endif;	NEW_INTEL_IOAPIC
endif;	MP_SUPPORT

endif;	PCI_BUS
;R51 ifdef	LAN_BOOT_SUPPORT
;R51 		extrn	LanBoot_Item:near
;R51 endif	;LAN_BOOT_SUPPORT


ifdef	PNP_BIOS
		include	PNP.EQU
endif	;PNP_BIOS

		Public	NCR_810_FOUND

PUSH_ALL	MACRO
		push	ds
		push	es
		pushad
		ENDM

POP_ALL		MACRO
		popad
		pop	es
		pop	ds
		ENDM

;[]================================================================[]
;			EQUATES
;[]================================================================[]

;717;TEMP_AREA		EQU	3000H

CLASS_VGA		EQU	03h
ALT_CLASS_VGA		EQU	0001h
CLASS_IDE		EQU	0101h
CLASS_SCSI		EQU	0100h
CLASS_PP_BRIDGE		EQU	0604H

CLASS_USB		EQU	0C03h

PCI_VGA_CLASS		EQU	03H
NORMAL_VGA_CLASS	EQU	0001H

CIRRUS_VENDOR_ID	EQU	1013H
NCR_VENDOR_ID		EQU	1000h
DEVICE_NCR810		EQU	0001h
DEVICE_NCR860		EQU	0006h
ADAPTEC_VENDOR_ID	EQU	9004h

DEVICE_AHA7850		EQU	5078h
DEVICE_AHA7860		EQU	6078h
DEVICE_AHA7870		EQU	7078h
DEVICE_AHA7880		EQU	8078h
DEVICE_AHA7895		EQU	7895H

BusLogic_VENDOR_ID	EQU	104bh
DEVICE_BA81C15		EQU	8130h

ACARD_VENDOR_ID		EQU	1191h
DEVICE_ACARD6710	EQU	8002h

AMD_VENDOR_ID		EQU	1022h
DEVICE_AMD974_SCSI	EQU	2020h

;[]================================================================[]
;		BP definitions
;[]================================================================[]

STACK_LOC	=	ITEMSTAT_BUF
DEFINE_STACK	MACRO	VAR_NAME, VAR_LEN
		Public	VAR_NAME
	VAR_NAME  = STACK_LOC
	STACK_LOC = STACK_LOC + VAR_LEN
		ENDM

DEFINE_STACK	START_PCI_DEV		, 1
DEFINE_STACK	END_PCI_DEV		, 1

DEFINE_STACK	AVAILABLE_PREFET_START	, 4
DEFINE_STACK	AVAILABLE_MEM_START	, 4
DEFINE_STACK	AVAILABLE_IO_START	, 4

DEFINE_STACK	PREFET_MEM_BUF_PTR	, 2
DEFINE_STACK	HMEM_BUF_PTR		, 2
DEFINE_STACK	IO_BUF_PTR		, 2
DEFINE_STACK	LMEM_BUF_PTR		, 2
DEFINE_STACK	BASE_REQ_BUF_PTR	, 2
DEFINE_STACK	PCI_VGA_DEVICE_BUF_PTR	, 2

DEFINE_STACK	CURRENT_DEVICE_ID	, 2
DEFINE_STACK	CURRENT_VENDOR_ID	, 2
DEFINE_STACK	CURRENT_CLASS_CODE	, 2
DEFINE_STACK	CURRENT_SLOT		, 1
DEFINE_STACK	CURRENT_BUS_NO		, 1
DEFINE_STACK	TOTAL_BUS_NO		, 1
DEFINE_STACK	DEVICE_CLASS_FLAG 	, 1
LAN_NOW		EQU	080H
LAN_FOUND	EQU	040H
RAID_FIRST	EQU	020H

;------------------------------------------------------------
;
;	LMEM_RESOURCE[bp]
;
;each bit describes 4K ROM(Shadow RAM) area
;  starting from C8000h - DF000h
;  i.e. bit 0 = 1 means C8000h-C8FFFh is occupied
;	    1 = 1	C9000h-C9FFFh is occupied
;	.
;	.
;	.
;
;------------------------------------------------------------

DEFINE_STACK	LMEM_RESOURCE		, 4
DEFINE_STACK	AVAIL_LMEM_ADDR		, 4
DEFINE_STACK	TARGET_AVAIL_LMEM	, 4
DEFINE_STACK	LMEM_FOR_ROM_FLG	, 1
DEFINE_STACK	NEED_ASSIGN_LMEM_FLAG	, 1
DEFINE_STACK	LMEM_BEFORE_ROM		, 4
DEFINE_STACK	LMEM_RESERVED		, 4

DEFINE_STACK	PCI_VGA_INFO		, 2		;bus/dev+Fun No.
DEFINE_STACK	PCI_VGA_FOUND		, 1
		VGA_DEVICE_EXIST	EQU	0AAh
DEFINE_STACK	VGA_BIOS_LENGTH		, 1
;-------------------------------------------------------------
;for Ct_PCI_VGA_IDSEL to report a onboard VGA P2P device no.
;Just fill ONBOARD_VGA_P2P[BP] with the P2P bridge's device(func)
;number to inform the PCI kernel.
;-------------------------------------------------------------
DEFINE_STACK	ONBOARD_VGA_P2P		, 1

DEFINE_STACK	NCR_810_FOUND		, 1
		NCR_SCSI_FOUND		EQU	0BBh
		INVOKE_NCR_CBROM	EQU	0AAh
DEFINE_STACK	COMBINED_PCI_ROM_NEED	, 1
DEFINE_STACK	CBROM_BP_START		, 2
DEFINE_STACK	CBROM_BP_END		, 2
DEFINE_STACK	CBROM_BUF_START		, 4
DEFINE_STACK	CBROM_BUF_END		, 4
;717;DEFINE_STACK	PCI_CBROM_TEMP		, 1
DEFINE_STACK	PCI_CBROM_ADDR		, 4