init.s

来自「该驱动程序是针对2410开发板的LED灯的驱动」· S 代码 · 共 34 行

/*
 * Name	: init.s
 * Disc	: initial the environment
 * 2007-07-30 by Qingmin Liu
 */

@ stack size
@ it should be less than 4KBytes
.equ stack_top, 0x1000
@ WDT register
.equ WTCON,	0x53000000

.text
.global _start

_start:
	@ disable watch dog timer
	mov r0, #WTCON
	mov r1, #0x0
	str r1, [r0]

	@ setup the stack
	ldr sp, =stack_top

	@ jump to C code entry main, and it should be 
	@ supported by stack. Therefore, you must setup
	@ the stack.
	bl main

stop:
	b stop

.end