1 /* 2 * This file implements recording of each stage of the boot process. It is 3 * intended to implement timing of each stage, reporting this information 4 * to the user and passing it to the OS for logging / further analysis. 5 * 6 * Copyright (c) 2011 The Chromium OS Authors. 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #ifndef _BOOTSTAGE_H 27 #define _BOOTSTAGE_H 28 29 /* 30 * A list of boot stages that we know about. Each of these indicates the 31 * state that we are at, and the action that we are about to perform. For 32 * errors, we issue an error for an item when it fails. Therefore the 33 * normal sequence is: 34 * 35 * progress action1 36 * progress action2 37 * progress action3 38 * 39 * and an error condition where action 3 failed would be: 40 * 41 * progress action1 42 * progress action2 43 * progress action3 44 * error on action3 45 */ 46 enum bootstage_id { 47 BOOTSTAGE_ID_RUN_OS = 15, /* Exiting U-Boot, entering OS */ 48 }; 49 50 /* 51 * Board code can implement show_boot_progress() if needed. 52 * 53 * @param val Progress state (enum bootstage_id), or -id if an error 54 * has occurred. 55 */ 56 void show_boot_progress(int val); 57 static inline void show_boot_error(int val) 58 { 59 show_boot_progress(-val); 60 } 61 62 #endif 63