boot.s

来自「ARM9WindowsOS下电机控制 蜂鸣控制 需要高度自治的试验平台」· S 代码 · 共 105 行

	IMPORT	postDelay

	IMPORT	dummyOs
	IMPORT	post_initGpio
         IMPORT  stack_SVC
         IMPORT  init_Memory

         IMPORT  PSSR
         IMPORT  PSSR_RDH
         IMPORT  PSSR_PH
         
      	AREA boot ,CODE ,READONLY

	ENTRY

	b post
	nop
	nop
	nop

;0x10
	nop
	nop
	nop
	nop

;0x20
	nop
	nop
	nop
	nop

;0x30
	nop
	nop
	nop
	nop

;0x40
	nop
	nop
	nop
	nop

;0x50
	nop
	nop
	nop
	nop

;0x60
	nop
	nop
	nop
	nop

;0x70
	nop
	nop
	nop
	nop

;/////////
;this post routine body
;////////

post

         ldr     r1, =PSSR
         ldr     r2, [r1]  
         orr     r2, r2,#0x10
         str     r2, [r1]


         mov r14,pc
	ldr pc,=post_initGpio  


	mov r14,pc
         ldr pc,=init_Memory

         ldr r11, =stack_SVC
         mov r13, r11




;//////////////////



    MOV          R0,#0xa000000      ;turn on the light of board
    LDR           R2,=0xCFFF
    STRH          R2,[R0,#0]


   

	ldr pc,=dummyOs
	END