| Graeme Russ | c620c01 | 2008-12-07 10:28:57 +1100 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2008 |
| 3 | * Graeme Russ, graeme.russ@gmail.com. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include "hardware.h" |
| 25 | |
| 26 | /* board early intialization */ |
| 27 | .globl early_board_init |
| 28 | early_board_init: |
| 29 | /* No 32-bit board specific initialisation */ |
| 30 | jmp *%ebp /* return to caller */ |
| 31 | |
| 32 | .globl show_boot_progress_asm |
| 33 | show_boot_progress_asm: |
| 34 | |
| 35 | movb %al, %dl /* Create Working Copy */ |
| 36 | andb $0x80, %dl /* Mask in only Error bit */ |
| 37 | shrb $0x02, %dl /* Shift Error bit to Error LED */ |
| 38 | andb $0x0f, %al /* Mask out 'Error' bit */ |
| 39 | orb %dl, %al /* Mask in ERR LED */ |
| 40 | movw $LED_LATCH_ADDRESS, %dx |
| 41 | outb %al, %dx |
| 42 | jmp *%ebp /* return to caller */ |
| 43 | |
| 44 | .globl cpu_halt_asm |
| 45 | cpu_halt_asm: |
| 46 | movb $0x0f, %al |
| 47 | movw $LED_LATCH_ADDRESS, %dx |
| 48 | outb %al, %dx |
| 49 | hlt |
| 50 | jmp cpu_halt_asm |