option.inc

2440的bootloader

;===========================================
; NAME: OPTION.A
; DESC: Configuration options for .S files
; HISTORY:
; 02.28.2002: ver 0.0
; 03.11.2003: ver 0.0	attached for 2440.
;===========================================

;Start address of each stacks,
_STACK_BASEADDRESS	EQU 0x33ff8000
_MMUTT_STARTADDRESS	EQU 0x33ff8000
_ISR_STARTADDRESS	EQU 0x33ffff00

		GBLL 	PLL_ON_START
PLL_ON_START	SETL 	{TRUE}


		GBLL	ENDIAN_CHANGE
ENDIAN_CHANGE	SETL	{FALSE}

		GBLA	ENTRY_BUS_WIDTH
ENTRY_BUS_WIDTH	SETA	16


;BUSWIDTH = 16,32
		GBLA    BUSWIDTH	;max. bus width for the GPIO configuration
BUSWIDTH	SETA    32

				
	GBLA	UCLK
UCLK	SETA	48000000
		
		
	GBLA	XTAL_SEL
	GBLA	FCLK
;(1) When xtal=12MHz
;XTAL_SEL	SETA	12000000
;FCLK	SETA	304000000
;(2) When xtal=16MHz
XTAL_SEL	SETA	16000000
FCLK	SETA	256000000
		
		
CLKDIV_VAL	EQU	7	; 0=1:1:1, 1=1:1:2, 2=1:2:2, 3=1:2:4, 4=1:4:4, 5=1:4:8, 6=1:3:3, 7=1:3:6.
		
			
 [ XTAL_SEL = 12000000
	[ FCLK = 271500000
M_MDIV		EQU	173		;Fin=12.0MHz Fout=271.5MHz
M_PDIV		EQU	2
M_SDIV		EQU	2
;M_SDIV		EQU	1		; 2440X
	]
	[ FCLK = 304000000
M_MDIV		EQU	68		;Fin=12.0MHz Fout=304.8MHz
M_PDIV		EQU	1
M_SDIV		EQU	1
;M_SDIV		EQU	0		; 2440X
	]

	[ UCLK = 48000000
U_MDIV		EQU	56		;Fin=12.0MHz Fout=48MHz
U_PDIV		EQU	2
U_SDIV		EQU	2
	]
	[ UCLK = 96000000
U_MDIV		EQU	56		;Fin=12.0MHz Fout=96MHz
U_PDIV		EQU	2
U_SDIV		EQU	1

	]

  |	; else if XTAL_SEL = 16.9344Mhz

	[ FCLK = 256000000
M_MDIV		EQU	120	;Fin=16.9344MHz
M_PDIV		EQU	2
M_SDIV		EQU	2	; 2440A
;M_SDIV		EQU	1	; 2440x
	]
	[ FCLK = 296352000
M_MDIV		EQU	97	;Fin=16.9344MHz
M_PDIV		EQU	1
M_SDIV		EQU	2	; 2440A
;M_SDIV		EQU	1	; 2440x
	]
	
	[ UCLK = 48000000
U_MDIV		EQU	72	;Fin=16.9344MHz Fout=48MHz
U_PDIV		EQU	4
U_SDIV		EQU	2
	]
	[ UCLK = 96000000
U_MDIV		EQU	60	;Fin=16.9344MHz Fout=96MHz
U_PDIV		EQU	4
U_SDIV		EQU	1
	]
	
   ]	; end of if XTAL_SEL = 12000000.


	END