boot.asm

利用ccs3.3 开发环境

    .ref    _c_int00
    .global RESET_RST
        
FLASH_START   .equ    0x90000400        ;flash start address
CODE_START    .equ    0x00000400        ;start of non boot code
CODE_SIZE     .equ    0x0000e000        ;application code size in byte
  
	.sect "vectors"
RESET_RST:
    
    NOP  ; mvkl .S2 _c_int00, B0
    NOP  ; mvkh .S2 _c_int00, B0
    NOP  ; B    .S2 B0
	NOP
	NOP
	NOP
	NOP
    NOP
    
NMI_RST:    
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

RESV1:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

RESV2:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT4:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT5:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
                   
INT6:
    .ref   _exint6_isr
    b _exint6_isr
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT7:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT8:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT9:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT10:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT11:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT12:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT13:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT14:
    NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP

INT15:
    NOP 
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
	NOP
 
	.sect "bootload"
	
_boot_start:
    mvkl  FLASH_START,B4 ;flash start address ->B4
    mvkh  FLASH_START,B4   
      	
	mvkl  CODE_START,A4 ;apps code start address ->A4
	mvkh  CODE_START,A4
	zero  A1
	
	mvkl  CODE_SIZE,B6
	mvkh  CODE_SIZE,B6
_boot_loop1:
	ldw  *B4++,A0
	nop 5
	stw A0,*A4++
	nop 5
	add 1,a1,a1
	cmplt A1,B6,B0
	nop
	[b0] b _boot_loop1
	nop 5
	b _c_int00
    nop 5