jump.s

基于AT91SAM9260的bootloader

;------------------------------------------------------------------------------
;-      ATMEL Microcontroller Software Support  -   ROUSSET -
;------------------------------------------------------------------------------
;- File source          : remap.s
;- Librarian            : Not applicable
;- Translator           : 
;-
;- Treatment            : Execute the remap and branch to 0
;-
;- 03/10/01   HI 		: Creation
;------------------------------------------------------------------------------

                AREA    reset, CODE, READONLY

AT91C_ENABLE_ICACHE		EQU (1:SHL:12)

                EXPORT  Jump

Jump

;--------------------------------------------
;- Read/modify/write CP15 control register 1
;- Enable I-Cache
;--------------------------------------------

    mrc     p15, 0, r5, c1, c0,0	; read cp15 reg1
	ldr 	r6, = AT91C_ENABLE_ICACHE 
    orr     r5, r5, r6             
	mcr 	p15, 0, r5, c1, c0, 0	; write cp15 reg1

	mov pc, r0				

   	END