@ r0 -> start of flash@ r1 -> where to load data@ r2 -> start of program	.text	.align	.global main,_mainmain:_main:	# copy .data section	ldr r3, =_etext	ldr r4, =_sdata	ldr r5, =_edata	subs r5, r5, r4	blne copydata	# clear .bss section	ldr r4, =_sbss	ldr r5, =_ebss	subs r5, r5, r4	mov r0, #0	blne clearbss		# and jump to the kernel	b bootcopydata:	subs r5, r5, #4	ldr r6, [r3], #4	str r6, [r4], #4	bne copydata	mov pc, lrclearbss:	subs r5, r5, #4	str r0, [r3], #4	bne clearbss	mov pc, lr