| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 2012 Free Software Foundation, Inc. |
| * |
| * GRUB 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, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #define SYSCALL_WRITE 4 |
| #define SYSCALL_RESET 88 |
| #define SYSCALL_EXIT 1 |
| |
| #define STDOUT 1 |
| #define SHUTDOWN_MAGIC1 0xfee1dead |
| #define SHUTDOWN_MAGIC2 0x28121969 |
| #define SHUTDOWN_MAGIC3 0x4321fedc |
| |
| .text |
| .global start, _start, __start |
| __start: |
| _start: |
| start: |
| /* write. */ |
| li %r0, SYSCALL_WRITE |
| li %r3, STDOUT |
| lis %r4, message@h |
| ori %r4, %r4, message@l |
| lis %r5, messageend@h |
| ori %r5, %r5, messageend@l |
| sub %r5, %r5, %r4 |
| sc |
| |
| /* shutdown. */ |
| li %r0, SYSCALL_RESET |
| lis %r3, SHUTDOWN_MAGIC1@h |
| ori %r3, %r3, SHUTDOWN_MAGIC1@l |
| lis %r4, SHUTDOWN_MAGIC2@h |
| ori %r4, %r4, SHUTDOWN_MAGIC2@l |
| lis %r5, SHUTDOWN_MAGIC3@h |
| ori %r5, %r5, SHUTDOWN_MAGIC3@l |
| sc |
| |
| /* exit(1). Shouldn't be reached. */ |
| li %r0, SYSCALL_EXIT |
| li %r3, 1 |
| sc |
| |
| .data |
| message: |
| .ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n" |
| messageend: |
