@ Start of executable code #include "config.h".global _start_start:@ Exception vector table (physical address = 0x00000000)	b	Reset	b	.  b	.	b	.	b	.	b	.	b	.	b	.@ Start VIVI headReset:	@ disable watch dog timer	mov	r1, #WTCON	mov	r2, #0x0	str	r2, [r1]	@ disable all interrupts	mov	r1, #INT_CTL_BASE	mov	r2, #0xffffffff	str	r2, [r1, #oINTMSK]	ldr	r2, =0x7ff	str	r2, [r1, #oINTSUBMSK]			@ initialise system clocks	mov	r1, #INT_CTL_BASE	mvn	r2, #0xff000000	str	r2, [r1, #oLOCKTIME]	mov	r1, #CLK_CTL_BASE	mov	r2, #0x3	str	r2, [r1, #0x14]	mrc	p15, 0, r1, c1, c0, 0		@ read ctrl register 	orr	r1, r1, #0xc0000000		@ Asynchronous  	mcr	p15, 0, r1, c1, c0, 0		@ write ctrl register		@ now ,usb clock is 48Mhz	ldr     r0, =CLK_CTL_BASE  @ Fin=12MHz, Fout=48MHz	ldr     r1, =upp_48Mhz 	str     r1, [r0,#0x08]  	nop 	nop 	nop 	nop 	ldr     r0, =CLK_CTL_BASE  @ Fin=12MHz, Fout=48MHz	ldr     r1, =upp_48Mhz 	str     r1, [r0,#0x08] 	@ now, CPU clock is 200 Mhz	mov	r1, #CLK_CTL_BASE	ldr	r2, =mpll_200mhz	str	r2, [r1, #oMPLLCON]		@ All LED on	mov	r1, #GPIO_CTL_BASE	add	r1, r1, #oGPIO_F	ldr	r2,=0x55aa	str	r2, [r1, #oGPIO_A]	mov	r2, #0xff	str	r2, [r1, #oGPIO_UP]	mov	r2, #0x00	str	r2, [r1, #oGPIO_DAT]		bl	memsetup		ldr sp, = SDRAM_END	bl maindie:	b diememsetup:	@ set memory control registers	mov	r1, #0x48000000	adrl	r2, mem_cfg_val	add	r3, r1, #521:		ldr	r4, [r2], #4	str	r4, [r1], #4	cmp	r1, r3	bne	1b	mov	pc, lr	@@ Data Area@@ Memory configuration values.align 4mem_cfg_val:	.long	vBWSCON	.long	vBANKCON0	.long	vBANKCON1	.long	vBANKCON2	.long	vBANKCON3	.long	vBANKCON4	.long	vBANKCON5	.long	vBANKCON6	.long	vBANKCON7	.long	vREFRESH	.long	vBANKSIZE	.long	vMRSRB6	.long	vMRSRB7