| /* |
| * This file is part of the coreboot project. |
| * |
| * 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 <cpu/x86/post_code.h> |
| |
| /* I/O delay between post codes on failure */ |
| #define LHLT_DELAY 0x50000 |
| |
| .text |
| .global car_stage_entry |
| car_stage_entry: |
| call romstage_c_entry |
| |
| /* we don't return here */ |
| movb $0x69, %ah |
| jmp .Lhlt |
| |
| .Lhlt: |
| xchg %al, %ah |
| #if CONFIG(POST_IO) |
| outb %al, $CONFIG_POST_IO_PORT |
| #else |
| post_code(POST_DEAD_CODE) |
| #endif |
| movl $LHLT_DELAY, %ecx |
| .Lhlt_Delay: |
| outb %al, $0xED |
| loop .Lhlt_Delay |
| jmp .Lhlt |