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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Early initialization code for sbsa-ref machine
*/
#include <arch/asm.h>
ENTRY(_start)
/* TF-A arg which contains a pointer to fdt */
ldr x1, =_fdt_pointer
str x0, [x1]
/* Setup CPU. */
/* bl arm64_init_cpu */
/* ==== stack init from arm64_init_cpu ==== */
msr SPSel, #0 /* use SP_EL0 */
ldr x2, =0xdeadbeefdeadbeef
ldr x0, =_stack
ldr x1, =_estack
1:
stp x2, x2, [x0], #16
cmp x0, x1
bne 1b
sub sp, x0, #16
/* ==== END ==== */
/* 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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