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/*
* Early initialization code for aarch64 (a.k.a. armv8)
*
* Copyright 2019 Asami Doi <d0iasm.pub@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <arch/asm.h>
ENTRY(_start)
/* Setup CPU. */
bl arm64_init_cpu
/* Get code positions. */
ldr x1, =_flash
ldr x0, =_bootblock
/* Calculate bootblock size. */
ldr x2, =_ebootblock
sub x2, x2, x0
/* Call memcpy in arch/arm64/memcpy.S */
bl memcpy
dmb sy
/* Calculate relocation offset between bootblock in flash and in DRAM. */
ldr x0, =_flash
ldr x1, =_bootblock
sub x1, x1, x0
/* Jump to main() in DRAM. */
adr x0, main
add x0, x0, x1
blr x0
ENDPROC(_start)
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