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/*
* Early initialization code for aarch64 (a.k.a. armv8)
*
* Copyright 2015 Google Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/asm.h>
ENTRY(_start)
/* Initialize PSTATE, SCTLR and caches to clean state. */
bl arm64_init_cpu
/* Initialize stack with sentinel value to later check overflow. */
ldr x0, =_stack
ldr x1, =_estack
ldr x2, =0xdeadbeefdeadbeef
stack_init_loop:
stp x2, x2, [x0], #16
cmp x0, x1
bne stack_init_loop
/* Leave a line of beef dead for easier visibility in stack dumps. */
sub sp, x0, #16
bl main
ENDPROC(_start)
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