mcf523x.cfg

一个开源的Modbus协议栈

ResetHalt
Delay 200
Stop

; --------------------------- Set VBR to beginning of SRAM ------------------
; writecontrolreg 0x0801  0x20000000

; --------------------------- RAMBAR INIT -----------------------------------
; Set RAMBAR = 0x20000001
writecontrolreg 0x0C05 	0x20000001

; --------------------------- FLASH INIT ------------------------------------
; 2MB FLASH on CS0 at 0x00000000
writemem.w 0x40000080   0x0000
writemem.l 0x40000084   0x001F0001
writemem.w 0x4000008A   0x1980
delay 100

; --------------------------- SDRAM INIT ------------------------------------
; 16MB SDRAM at 0x10000000

; Set PAR_SDRAM to allow SDRAM signals to be enabled
writemem.b 0x40100046	0x3F
; Set PAR_AD to allow 32-bit SDRAM if the exteranl boot device is 16-bits
writemem.b 0x40100040	0xE1

; 16 MB SDRAM
writemem.w 0x40000040	0x0446
writemem.l 0x40000048 	0x10001300 
writemem.l 0x4000004C 	0x00FC0001

; Set IP in DACR and init precharge.
writemem.l 0x40000048	0x10001308
writemem.l 0x10000000	0xAA55AA55

; Wait a bit
delay 100

; Set RE in DACR
writemem.l 0x40000048	0x10009300
; Issue IMRS
writemem.l 0x40000048	0x10009340
writemem.l 0x10000400	0xAA55AA55

; Wait a bit more
delay      600

; --------------------------- WCR DISABLE------------------------------------
writemem.w 0x40140000   0x0000