| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2013 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <console/console.h> |
| #include "power.h" |
| #include "wakeup.h" |
| |
| void wakeup(void) |
| { |
| if (wakeup_need_reset()) |
| power_reset(); |
| |
| power_init(); /* Ensure ps_hold_setup() for early wakeup. */ |
| power_exit_wakeup(); |
| /* Should never return. If we do, reset. */ |
| power_reset(); |
| } |
| |
| int get_wakeup_state(void) |
| { |
| uint32_t status = power_read_reset_status(); |
| |
| /* DIDLE/LPA can be resumed without clock reset (ex, bootblock), |
| * and SLEEP requires resetting clock (should be done in ROM stage). |
| */ |
| |
| if (status == S5P_CHECK_DIDLE || status == S5P_CHECK_LPA) |
| return WAKEUP_DIRECT; |
| |
| if (status == S5P_CHECK_SLEEP) |
| return WAKEUP_NEED_CLOCK_RESET; |
| |
| return IS_NOT_WAKEUP; |
| } |
| |
| void wakeup_enable_uart(void) |
| { |
| power_release_uart_retention(); |
| } |