| /* |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #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) |
