include/bootstage.h

   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_START = 0,
  48         BOOTSTAGE_ID_CHECK_MAGIC,       /* Checking image magic */
  49         BOOTSTAGE_ID_CHECK_HEADER,      /* Checking image header */
  50         BOOTSTAGE_ID_CHECK_CHECKSUM,    /* Checking image checksum */
  51         BOOTSTAGE_ID_CHECK_ARCH,        /* Checking architecture */
  52
  53         BOOTSTAGE_ID_CHECK_IMAGETYPE = 5,/* Checking image type */
  54         BOOTSTAGE_ID_DECOMP_IMAGE,      /* Decompressing image */
  55         BOOTSTAGE_ID_KERNEL_LOADED,     /* Kernel has been loaded */
  56         BOOTSTAGE_ID_DECOMP_UNIMPL = 7, /* Odd decompression algorithm */
  57         BOOTSTAGE_ID_CHECK_BOOT_OS,     /* Calling OS-specific boot function */
  58         BOOTSTAGE_ID_BOOT_OS_RETURNED,  /* Tried to boot OS, but it returned */
  59         BOOTSTAGE_ID_CHECK_RAMDISK = 9, /* Checking ram disk */
  60
  61         BOOTSTAGE_ID_RUN_OS     = 15,   /* Exiting U-Boot, entering OS */
  62 };
  63
  64 /*
  65  * Board code can implement show_boot_progress() if needed.
  66  *
  67  * @param val   Progress state (enum bootstage_id), or -id if an error
  68  *              has occurred.
  69  */
  70 void show_boot_progress(int val);
  71 static inline void show_boot_error(int val)
  72 {
  73         show_boot_progress(-val);
  74 }
  75
  76 #endif