2410init.s

嵌入式开发原代码达盛2410开发板运行程序2410的板子

        ;// Led_Display
	ldr	r0,=GPFCON
	ldr	r1,=0x5500		
	str	r1,[r0]
	ldr	r0,=GPFDAT
	ldr	r1,=0x10
	str	r1,[r0]
	]

	;//To reduce PLL lock time, adjust the LOCKTIME register. 
	ldr	r0,=LOCKTIME
	ldr	r1,=0xffffff
	str	r1,[r0]
        
    	[ PLL_ON_START
	;//Configure MPLL
	ldr	r0,=MPLLCON          
	ldr	r1,=((M_MDIV<<12)+(M_PDIV<<4)+M_SDIV)  ;//Fin=12MHz,Fout=50MHz
	str	r1,[r0]
	]

	;//Check if the boot is caused by the wake-up from POWER_OFF mode.
	ldr	r1,=GSTATUS2
	ldr	r0,[r1]
	tst	r0,#0x2
        ;//In case of the wake-up from POWER_OFF mode, go to POWER_OFF_WAKEUP handler. 
	bne	WAKEUP_POWER_OFF

	EXPORT StartPointAfterPowerOffWakeUp
StartPointAfterPowerOffWakeUp

	;//Set memory control registers
    ldr	r0,=SMRDATA
	ldr	r1,=BWSCON	;//BWSCON Address
	add	r2, r0, #52	;//End address of SMRDATA
0       
	ldr	r3, [r0], #4    
	str	r3, [r1], #4    
	cmp	r2, r0		
	bne	%B0
	
    	;//Initialize stacks
	bl	InitStacks
	
  	;// Setup IRQ handler
	ldr	r0,=HandleIRQ       ;//This routine is needed
	ldr	r1,=IsrIRQ          ;//if there isn't 'subs pc,lr,#4' at 0x18, 0x1c
	str	r1,[r0]

	;//Copy and paste RW data/zero initialized data
	ldr	r0, =|Image$$RO$$Limit| ; Get pointer to ROM data
	ldr	r1, =|Image$$RW$$Base|  ; and RAM copy
	ldr	r3, =|Image$$ZI$$Base|  
	
	;//Zero init base => top of initialised data
	cmp	r0, r1      ;// Check that they are different
	beq	%F2
1       
	cmp	r1, r3      ;// Copy init data
	ldrcc	r2, [r0], #4    ;//--> LDRCC r2, [r0] + ADD r0, r0, #4         
	strcc	r2, [r1], #4    ;//--> STRCC r2, [r1] + ADD r1, r1, #4
	bcc	%B1
2       
	ldr	r1, =|Image$$ZI$$Limit| ;// Top of zero init segment
	mov	r2, #0
3       
	cmp	r3, r1      ;// Zero init
	strcc	r2, [r3], #4
	bcc	%B3

;//呼叫主应用程序
	b UART
UART
    ldr r0, =GPHCON ;//设置RxD0,TxD0引脚
    ldr r1, =0x2afaaa
    str r1, [r0]
    
    ldr r0, =GPHUP
    ldr r1, =0x7ff
    str r1, [r0] ;    // The pull up function is disabled GPH[10:0]


    ldr r0, =UFCON0 ;//禁用FIFO
    ldr r1, =0x0
    str r1, [r0]
   
    ldr r0, =UMCON0  ;//禁用AFC
    ldr r1, =0x0
    str r1, [r0]
    
    ldr r0, =ULCON0 ;//设置线寄存器
    ldr r1, =0x3   ; //UART LINE CONFIG  正常模式,无奇偶校验,一个停止位,8个数据位
    str r1, [r0]
    
    ldr r0, =UCON0 ;//设置Uart0控制器
    ldr r1, =0x245;//RX边沿触发,TX电平触发,禁用延时中断,使用RX 错误中断,正常操作模式,中断请求或表决模式
    str r1, [r0]
    
    ldr r0, =UBRDIV0 ;//设置波特率为115200
    ldr r1, =0x1a    ;//int(50700000 / 16 / 115200) - 1 = 26
    str r1, [r0]
    
    mov r1, #100
Delay
    sub r1, r1, #0x1
    bne Delay
    
    ;//开中断
    ldr r0, =INTMSK
    ldr r1, [r0]
    and r1, r1, #0xefffffff
    str r1, [r0]
    
    MOV R5 , #127 ;//设置要打印的字符的个数
    MOV R1 , #0x0 ;//设置要打印的字符
LOOP  
   LDR R3 , =UTRSTAT0
   LDR R2 , [R3]
   TST R2 ,#0x04 ;//判断发送缓冲区是否为空
   BEQ LOOP      ;//为空则执行下边的语句，不为空则跳转到LOOP
   LDR R0 , =UTXH0
   
   STR R1 ,[R0] ;//向数据缓冲区放置要发送的数据
   ADD R1, R1, #1
   SUB R5 ,R5, #0x01 ;//计数器减一
   CMP R5 ,#0x0
   BNE LOOP
  
LOOP2   B LOOP2 

;    /*
;    pclk    = PCLK;
;    rUFCON0 = 0x0;   //UART channel 0 FIFO control register, FIFO disable
;    rUFCON1 = 0x0;   //UART channel 1 FIFO control register, FIFO disable
;    rUFCON2 = 0x0;   //UART channel 2 FIFO control register, FIFO disable
;    rUMCON0 = 0x0;   //UART chaneel 0 MODEM control register, AFC disable
;    rUMCON1 = 0x0;   //UART chaneel 1 MODEM control register, AFC disable
    
;//UART0
;    rULCON0 = 0x3;   //Line control register : Normal,No parity,1 stop,8 bits
;     //    [10]       [9]     [8]        [7]        [6]      [5]         [4]           [3:2]        [1:0]
;     // Clock Sel,  Tx Int,  Rx Int, Rx Time Out, Rx err, Loop-back, Send break,  Transmit Mode, Receive Mode
;     //     0          1       0    ,     0          1        0           0     ,       01          01
;     //   PCLK       Level    Pulse    Disable    Generate  Normal      Normal        Interrupt or Polling
;    rUCON0  = 0x245;                        // Control register
;//    rUBRDIV0=( (int)(pclk/16./baud) -1 );   //Baud rate divisior register 0
;    rUBRDIV0=( (int)(pclk/16./baud+0.5) -1 );   //Baud rate divisior register 0    
    
;//UART1
;    rULCON1 = 0x3;
;    rUCON1  = 0x245;
;    rUBRDIV1=( (int)(pclk/16./baud) -1 );
;    
;//UART2
;    rULCON2 = 0x3;
;    rUCON2  = 0x245;
;    rUBRDIV2=( (int)(pclk/16./baud) -1 );    
;
;    for(i=0;i<100;i++);
;    
;    */

;//END OF UART HERE


;//function initializing stacks
InitStacks
	;//Don't use DRAM,such as stmfd,ldmfd......
	;//SVCstack is initialized before
	;//Under toolkit ver 2.5, 'msr cpsr,r1' can be used instead of 'msr cpsr_cxsf,r1'
	mrs	r0,cpsr
	bic	r0,r0,#MODEMASK
	orr	r1,r0,#UNDEFMODE|NOINT
	msr	cpsr_cxsf,r1		;//UndefMode
	ldr	sp,=UndefStack
	
	orr	r1,r0,#ABORTMODE|NOINT
	msr	cpsr_cxsf,r1		;//AbortMode
	ldr	sp,=AbortStack

	orr	r1,r0,#IRQMODE|NOINT
	msr	cpsr_cxsf,r1		;//IRQMode
	ldr	sp,=IRQStack
    
	orr	r1,r0,#FIQMODE|NOINT
	msr	cpsr_cxsf,r1		;//FIQMode
	ldr	sp,=FIQStack

	bic	r0,r0,#MODEMASK|NOINT
	orr	r1,r0,#SVCMODE
	msr	cpsr_cxsf,r1		;//SVCMode
	ldr	sp,=SVCStack
	
	;//USER mode has not be initialized.
	
	mov	pc,lr 
	;//The LR register won't be valid if the current mode is not SVC mode.
	

	LTORG
; incbin ..\..\Font\Hzk16.bin
SMRDATA DATA
;// Memory configuration should be optimized for best performance 
;// The following parameter is not optimized.                     
;// Memory access cycle parameter strategy
;// 1) The memory settings is  safe parameters even at HCLK=75Mhz.
;// 2) SDRAM refresh period is for HCLK=75Mhz. 

        DCD (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
    	DCD ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))   ;//GCS0
    	DCD ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))   ;//GCS1 
    	DCD ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC))   ;//GCS2
    	DCD ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC))   ;//GCS3
    	DCD ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC))   ;//GCS4
    	DCD ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC))   ;//GCS5
    	DCD ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))    ;//GCS6
    	DCD ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))    ;//GCS7
    	DCD ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)    



		DCD 0x32            ;//SCLK power saving mode, BANKSIZE 128M/128M
    	DCD 0x30            ;//MRSR6 CL=3clk
    	DCD 0x30            ;//MRSR7
;//    	DCD 0x20            ;//MRSR6 CL=2clk
;///   	DCD 0x20            ;//MRSR7

    	ALIGN


    	AREA RamData, DATA, READWRITE

        ^   _ISR_STARTADDRESS
HandleReset 	#   4
HandleUndef 	#   4
HandleSWI   	#   4
HandlePabort    #   4
HandleDabort    #   4
HandleReserved  #   4
HandleIRQ   	#   4
HandleFIQ   	#   4

;//Don't use the label 'IntVectorTable',
;//The value of IntVectorTable is different with the address you think it may be.
;//IntVectorTable
HandleEINT0   	#   4
HandleEINT1   	#   4
HandleEINT2   	#   4
HandleEINT3   	#   4
HandleEINT4_7	#   4
HandleEINT8_23	#   4
HandleRSV6		#   4
HandleBATFLT   	#   4
HandleTICK   	#   4
HandleWDT		#   4
HandleTIMER0 	#   4
HandleTIMER1 	#   4
HandleTIMER2 	#   4
HandleTIMER3 	#   4
HandleTIMER4 	#   4
HandleUART2  	#   4
HandleLCD 		#   4
HandleDMA0		#   4
HandleDMA1		#   4
HandleDMA2		#   4
HandleDMA3		#   4
HandleMMC		#   4
HandleSPI0		#   4
HandleUART1		#   4
HandleRSV24		#   4
HandleUSBD		#   4
HandleUSBH		#   4
HandleIIC   	#   4
HandleUART0 	#   4
HandleSPI1 		#   4
HandleRTC 		#   4
HandleADC 		#   4

        END