| Aaron Durbin | 909c512 | 2015-09-29 17:41:30 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright 2015 Google Inc |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| Aaron Durbin | 909c512 | 2015-09-29 17:41:30 -0500 | [diff] [blame] | 14 | */ |
| 15 | |
| Teo Boon Tiong | d8e34b2 | 2016-12-28 18:56:26 +0800 | [diff] [blame] | 16 | /* I/O delay between post codes on failure */ |
| 17 | #define LHLT_DELAY 0x50000 |
| Aaron Durbin | 909c512 | 2015-09-29 17:41:30 -0500 | [diff] [blame] | 18 | |
| 19 | .text |
| Aaron Durbin | ddf4fa0 | 2016-04-29 12:43:27 -0500 | [diff] [blame] | 20 | .global car_stage_entry |
| 21 | car_stage_entry: |
| Teo Boon Tiong | d8e34b2 | 2016-12-28 18:56:26 +0800 | [diff] [blame] | 22 | call romstage_c_entry |
| 23 | #include "src/drivers/intel/fsp1_1/after_raminit.S" |
| 24 | |
| Aaron Durbin | 909c512 | 2015-09-29 17:41:30 -0500 | [diff] [blame] | 25 | |
| 26 | movb $0x69, %ah |
| 27 | jmp .Lhlt |
| 28 | |
| 29 | .Lhlt: |
| 30 | xchg %al, %ah |
| 31 | #if IS_ENABLED(CONFIG_POST_IO) |
| 32 | outb %al, $CONFIG_POST_IO_PORT |
| 33 | #else |
| 34 | post_code(POST_DEAD_CODE) |
| 35 | #endif |
| 36 | movl $LHLT_DELAY, %ecx |
| 37 | .Lhlt_Delay: |
| 38 | outb %al, $0xED |
| 39 | loop .Lhlt_Delay |
| 40 | jmp .Lhlt |