berlin_tools/bootloader/source/arch/arm64/jump_64.S

#define APB_TIMER_REG_LDC               (0xf7e82c00)    //; apb_timer Load Counter Register
#define APB_TIMER_REG_VALUE             (0xf7e82c04)    //; apb_timer Value Register
#define APB_TIMER_REG_CTL               (0xf7e82c08)    //; apb_timer Controll Register
#define APB_TIMER_REG_RANGE             (0x14)          //; apb_timer Register Range for each timer
#define IMAGE2_TIMER                    (2)             //; use timer 2 to caculate the whole time for Image-2
#define BOOT_FLOW_TIMER                 (6)             //; use timer 6 to caculate the whole time for Image-2 and Image-3
#define TIMER_INIT_COUNT                (0xffffffff)



// r0: destination address
// void Jump(void *dest, unsigned long param[8])
.global Jump
Jump:
#if 0
		mov		r8, r0
		mov		ip, r1
		cmp		ip, #0
		ldmne		ip!, {r0-r7}

		dsb
		isb
		MOV		pc, r8
#else
	mov 	x19, x0
	mov 	x20, x1

	//; According to ARMv8 calling convention, callee should garantee x19 and x20 intact.
	bl	disable_mmu

	cmp 	x20, #0
	b.eq	noparam

	ldp	x6, x7, [x20, #0x30]
	ldp	x4, x5, [x20, #0x20]
	ldp	x2, x3, [x20, #0x10]
	ldp	x0, x1, [x20, #0]

noparam:
	//;dsb

	isb
	br 	x19

panic:
	b	panic

#endif