| /* |
| * 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 <arch/io.h> |
| #include <console/console.h> |
| #include <elog.h> |
| #include <reset.h> |
| |
| #include "chromeos.h" |
| #include "symbols.h" |
| |
| #define WATCHDOG_TOMBSTONE_MAGIC 0x9d2f41a7 |
| |
| void elog_add_watchdog_reset(void) |
| { |
| if (read32(_watchdog_tombstone) == WATCHDOG_TOMBSTONE_MAGIC) |
| elog_add_event(ELOG_TYPE_ASYNC_HW_TIMER_EXPIRED); |
| write32(_watchdog_tombstone, 0); |
| } |
| |
| void reboot_from_watchdog(void) |
| { |
| printk(BIOS_INFO, "Last reset was watchdog, reboot again to reset TPM!\n"); |
| write32(_watchdog_tombstone, WATCHDOG_TOMBSTONE_MAGIC); |
| hard_reset(); |
| } |