la	a0, start
	li	a1, 0xbfc00000
	la	a2, _edata
        or      a0, 0xa0000000
        or      a2, 0xa0000000
	subu	t1, a2, a0
	srl	t1, t1, 2

	move	t0, a0
	move	t1, a1
	move	t2, a2

	/* copy text section */
1:	lw	t3, 0(t1)
	nop
	sw	t3, 0(t0)
	addu	t0, 4
	addu	t1, 4
	bne	t2, t0, 1b
	nop

	PRINTSTR("\ncopy text section done.\r\n")
	
	/* Clear BSS */
	la	a0, _edata
	la	a2, _end
	or      a0, 0xa0000000
    or      a2, 0xa0000000
2:	sw	zero, 0(a0)
	bne	a2, a0, 2b
	addu	a0, 4