memtimes.inc

X86 GX1 BOOTLOAD代码 ,支持WINCE操作系统!

;********************************************************************
; check to see if equates have been done in bdcfg.inc
;  if not then set the standard defaults
;********************************************************************
IFNDEF	NUMBER_DIMMS
NUMBER_DIMMS	EQU	2
ENDIF

IFNDEF	DIMMADDRESS1
DIMMADDRESS1	equ	00h
ENDIF

IFNDEF	DIMMADDRESS2
DIMMADDRESS2	equ	00h
ENDIF

;
; Number of DIMM sockets on the board
;
NumDimmModules	DB	NUMBER_DIMMS

;
; Address of the EEPROM in the DIMM Socket
; This will be how A0, A1, A2 are tied
; There must be the same number of entries as NUM_DIMM_MODULES
; DIMM0, DIMM1
;
DimmEEPROMAddr	DB	DIMMADDRESS1, DIMMADDRESS2 


;
; Field	that needs to be set to	indicate if onboard SDRAM in addition to DIMMs
; IT IS	ASSUMED	THAT IF	THIS IS	SET THEN IT IS HOOKED UP LIKE IT IS A SINGLE
; DIMM BANK AND	IF A DIMM IS PLACED INTO THE SOCKET THEN IT USES THE SAME
; CS#, RAS, CAS, BA, WE	AND CAN	ONLY BE	A SINGLE DIMM BANK WITH	THE SAME EXACT
; CONFIGURATION	AS THE ON BOARD	SDRAM.	THE MEMORY CONTROLLER CAN ONLY DEAL
; WITH SYMMETRICAL DIMMS
; DIMM0, DIMM1
;
OnBoardSDRAM	DB	00h, 00h

;
; These	fields are the values for EEPROM
; Byte[	3] #Row	address	lines
; Byte[	4] #Column address lines
; Byte[	5] #Dimm Banks
; Byte[17] #Banks/SDRAM
; Byte[31] Module Bank Density
; DIMM0, DIMM1
;
OnBoardSDRAMData	DB	00h, 00h	; #row decoded 
			DB	00h, 00h	; #col decoded
			DB	00h, 00h	; #DIMM	Bank  (HARDCODED TO 1 IN CODE)
			DB	00h, 00h	; #Bank/SDRAM
			DB	00h, 00h	; density 04H=16MB

;
; CAS Latency
;
OnBoardSDRAMCAS	DB	00h, 00h	; CAS latency for onboard

;***************************************************************************************************
;
;	SDRAM Timing Table
;
;	PC66 Table
;
;***************************************************************************************************
;
SDRAMTimingTable:

;166 MHz ;   Assumes 33 MHz PCI Clock 5x Multiplier.
;DIV:	2.5   ->  66.4 MHz
	dw	170				; 166mhz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B68A2704h			; CPU_MC_MEM_CTRL1
SDRAMTimingEntrySize	EQU $-SDRAMTimingTable

;200 MHz ;   Assumes 33 MHz PCI Clock 6x Multiplier.
;DIV:	3.0  ->  66.7 MHz
	dw	210				; Cpu speed = 200MHz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B68E3104h			; CPU_MC_MEM_CTRL1
;233 MHz ;   Assumes 33 MHz PCI Clock 7x Multiplier.	
;DIV:	3.5  ->  66.6 MHz
	dw	240				; Cpu speed = 233MHz
	dw	1				; flags	- OK CAS 2
	dd	000000020h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B6923904h			; CPU_MC_MEM_CTRL1

;266 MHz ;   Assumes 33 MHz PCI Clock 8x Multiplier.
;DIV:	4.0  -> 66.5 MHz
	dw	270				; Cpu speed = 266MHz
	dw	1				; flags	- OK CAS 2
	dd	000000020h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B6963F04h			; CPU_MC_MEM_CTRL1

;300 MHz ;   Assumes 33 MHz PCI Clock 9x Multiplier. 
;DIV:	 4.5  -> 66.6 MHz
	dw	0ffffh				; >270 mhz
	dw	1				; flags	- OK CAS 2
	dd	000000028h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B69A4704h			; CPU_MC_MEM_CTRL1
SDRAMTimingTableSize	EQU $-SDRAMTimingTable


;***************************************************************************************************
;
;	PC100 Table
;
;***************************************************************************************************


SDRAMTimingTablePC100:
;166 MHz ;   Assumes 33 MHz PCI Clock 5x Multiplier.
;DIV:	2.5   ->  66.4 MHz
	dw	170				; 166mhz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B68A2704h			; CPU_MC_MEM_CTRL1

;200 MHz ;   Assumes 33 MHz PCI Clock 6x Multiplier.
;DIV:	3.0  ->  66.7 MHz
	dw	210				; Cpu speed = 200MHz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B68E3104h			; CPU_MC_MEM_CTRL1

;233 MHz ;   Assumes 33 MHz PCI Clock 7x Multiplier.
;DIV:	 3.0  ->  77.7 MHz
	dw	240				; Cpu speed = 233MHz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	07533125h			; MC_SYNC_TIM1
	dd	0B68E3904h			; CPU_MC_MEM_CTRL1

;266 MHz ;   Assumes 33 MHz PCI Clock 8x Multiplier.
;DIV:	 3.5  -> 76.0 MHz
	dw	270				; Cpu speed = 266MHz
	dw	1				; flags	- OK CAS 2
	dd	000000020h			; CPU_MC_MEM_CTRL2
	dd	07533125h			; MC_SYNC_TIM1
	dd	0B6923F04h			; CPU_MC_MEM_CTRL1

;300 MHz ;   Assumes 33 MHz PCI Clock 9x Multiplier.
;DIV:	 4  -> 75.0 MHz
	dw	0ffffh				; >270 mhz
	dw	1				; flags	- OK CAS 2
	dd	000000020h			; CPU_MC_MEM_CTRL2
	dd	07533125h			; MC_SYNC_TIM1
	dd	0B6964704h			; CPU_MC_MEM_CTRL1
SDRAMTimingTableSizePC100	EQU $-SDRAMTimingTablePC100

;***************************************************************************************************
;
;	PC133 Table
;
;***************************************************************************************************


SDRAMTimingTablePC133:
;166 MHz ;   Assumes 33 MHz PCI Clock 5x Multiplier.
;DIV:	2.5   ->  66.4 MHz
	dw	170				; 166mhz
	dw	3				; flags	- CAS 2 Forced
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B68A2704h			; CPU_MC_MEM_CTRL1

;200 MHz ;   Assumes 33 MHz PCI Clock 6x Multiplier.
;DIV:	3.0  ->  66.7 MHz
	dw	210				; Cpu speed = 200MHz
	dw	3				; flags	- CAS 2 Forced
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	06423125h			; MC_SYNC_TIM1
	dd	0B68E3104h			; CPU_MC_MEM_CTRL1

	
;233 MHz ;   Assumes 33 MHz PCI Clock 7x Multiplier.
;DIV:	 3.0  -> 77.7 MHz
	dw	240				; Cpu speed = 233MHz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	07533125h			; MC_SYNC_TIM1
	dd	0B68E3904h			; CPU_MC_MEM_CTRL1

;266 MHz ;   Assumes 33 MHz PCI Clock 8x Multiplier.
;DIV:	 3.0  -> 88.7 MHz
	dw	270				; Cpu speed = 266MHz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	07533125h			; MC_SYNC_TIM1
	dd	0B68E3F04h			; CPU_MC_MEM_CTRL1

;300 MHz ;   Assumes 33 MHz PCI Clock 9x Multiplier. 
;DIV:	 3  -> 100 MHz
	dw	0ffffh				; >270 mhz
	dw	1				; flags	- OK CAS 2
	dd	000000018h			; CPU_MC_MEM_CTRL2
	dd	08633125h			; MC_SYNC_TIM1
	dd	0B68E4704h			; CPU_MC_MEM_CTRL1

SDRAMTimingTableSizePC133	EQU $-SDRAMTimingTablePC133