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/*
* Copyright (c) 2011, Google Inc. All rights reserved.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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; either version 2 of
* the License, or (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __BOOTSTAGE_H
#define __BOOTSTAGE_H
/*
* These are the things that can be timestamped. There are some pre-defined
* by U-Boot, and some which are user defined.
*/
enum bootstage_id {
BOOTSTAGE_AWAKE,
BOOTSTAGE_START_UBOOT_F,
BOOTSTAGE_START_RELOC,
BOOTSTAGE_START_UBOOT_R,
BOOTSTAGE_USB_START,
BOOTSTAGE_ETH_START,
BOOTSTAGE_BOOTP_START,
BOOTSTAGE_BOOTP_STOP,
BOOTSTAGE_KERNELREAD_START,
BOOTSTAGE_KERNELREAD_STOP,
BOOTSTAGE_BOOTM_START,
BOOTSTAGE_BOOTM_HANDOFF,
BOOTSTAGE_MAIN_LOOP,
BOOTSTAGE_CPU_AWAKE,
BOOTSTAGE_MAIN_CPU_AWAKE,
BOOTSTAGE_MAIN_CPU_READY,
BOOTSTAGE_TPM_SEND_RECV,
BOOTSTAGE_LCD_WAIT,
/* a few spare for the user, from here */
BOOTSTAGE_USER,
/*
* Total number of entries - increase this at the cost of some space
* in the data region of the U-Boot image.
*/
BOOTSTAGE_COUNT = 30
};
#ifdef CONFIG_BOOTSTAGE
/**
* Mark a time stamp for the current boot stage.
*
* @param id Bootstage id to record this timestamp against
* @param name Textual name to display for this id in the report (maybe NULL)
* @return recorded timestamp in microseconds
*/
uint32_t bootstage_mark(enum bootstage_id id, const char *name);
/**
* Mark the start of a bootstage activity. The end will be marked later with
* bootstage_accum() and at that point we accumulate the time taken. Calling
* this function turns the given id into a accumulator rather than and
* absolute mark in time. Accumulators record the total amount of time spent
* in an activty during boot.
*
* @param id Bootstage id to record this timestamp against
* @param name Textual name to display for this id in the report (maybe NULL)
* @return start timestamp in microseconds
*/
uint32_t bootstage_start(enum bootstage_id id, const char *name);
/**
* Mark the start of a bootstage activity. The end will be marked later with
* bootstage_accum() and at that point we accumulate the time taken. Calling
* this function turns the given id into a accumulator rather than and
* absolute mark in time. Accumulators record the total amount of time spent
* in an activty during boot.
*
* @param id Bootstage id to record this timestamp against
* @param name Textual name to display for this id in the report (maybe NULL)
* @return time spent in this iteration of the activity (i.e. the time now
* less the start time recorded in the last bootstage_start() call
* with this id.
*/
uint32_t bootstage_accum(enum bootstage_id id);
/* Print a report about boot time */
void bootstage_report(void);
#else
static inline uint32_t bootstage_mark(enum bootstage_id id, const char *name)
{ return 0; }
static inline uint32_t bootstage_start(enum bootstage_id id, const char *name)
{ return 0; }
static inline uint32_t bootstage_accum(enum bootstage_id id)
{ return 0; }
#endif
#endif
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