boot.s

来自「对pxa255内置lcd控制器编程来实现字符及图像的显示」· S 代码 · 共 105 行

	IMPORT	postDelay
	IMPORT	post_initGpio
	IMPORT	dummyOs
         IMPORT   post_LcdController
         IMPORT   backlight_cs
         IMPORT   lcdlight 
         IMPORT   stack_myself
         IMPORT   init_Memory


	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


	mov r14,pc
         ldr pc,=init_Memory

         ldr r11, =stack_myself
         mov r13, r11


 
         mov r14,pc
	ldr pc,=post_initGpio

         mov r14,pc
         ldr pc,=post_LcdController

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

	ldr r0,=postDelay

postLoop	
	sub r0,r0,#0x1
	cmp r0,#0x0
	bne postLoop

    ldr r11,=backlight_cs
    ldr r1, =lcdlight
    strh r1, [r11]

        

	ldr pc,=dummyOs
	END