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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
*/
/*
* This module records the progress of boot and arbitrary commands, and
* permits accurate timestamping of each.
*
* TBD: Pass timings to kernel in the FDT
*/
#include <common.h>
#include <libfdt.h>
DECLARE_GLOBAL_DATA_PTR;
enum bootstage_flags {
BOOTSTAGEF_ERROR = 1 << 0, /* Error record */
BOOTSTAGEF_ALLOC = 1 << 1, /* Allocate an id */
};
struct bootstage_record {
ulong time_us;
const char *name;
int flags; /* see enum bootstage_flags */
enum bootstage_id id;
};
static struct bootstage_record record[BOOTSTAGE_ID_COUNT] = { {1} };
static int next_id = BOOTSTAGE_ID_USER;
ulong bootstage_add_record(enum bootstage_id id, const char *name,
int flags)
{
struct bootstage_record *rec;
ulong mark = timer_get_boot_us();
if (flags & BOOTSTAGEF_ALLOC)
id = next_id++;
if (id < BOOTSTAGE_ID_COUNT) {
rec = &record[id];
/* Only record the first event for each */
if (!rec->time_us) {
rec->time_us = mark;
rec->name = name;
rec->flags = flags;
rec->id = id;
}
}
/* Tell the board about this progress */
show_boot_progress(flags & BOOTSTAGEF_ERROR ? -id : id);
return mark;
}
ulong bootstage_mark(enum bootstage_id id)
{
return bootstage_add_record(id, NULL, 0);
}
ulong bootstage_error(enum bootstage_id id)
{
return bootstage_add_record(id, NULL, BOOTSTAGEF_ERROR);
}
ulong bootstage_mark_name(enum bootstage_id id, const char *name)
{
int flags = 0;
if (id == BOOTSTAGE_ID_ALLOC)
flags = BOOTSTAGEF_ALLOC;
return bootstage_add_record(id, name, flags);
}
static void print_time(unsigned long us_time)
{
char str[15], *s;
int grab = 3;
/* We don't seem to have %'d in U-Boot */
sprintf(str, "%12lu", us_time);
for (s = str + 3; *s; s += grab) {
if (s != str + 3)
putc(s[-1] != ' ' ? ',' : ' ');
printf("%.*s", grab, s);
grab = 3;
}
}
static uint32_t print_time_record(enum bootstage_id id,
struct bootstage_record *rec, uint32_t prev)
{
print_time(rec->time_us);
print_time(rec->time_us - prev);
if (rec->name)
printf(" %s\n", rec->name);
else if (id >= BOOTSTAGE_ID_USER)
printf(" user_%d\n", id - BOOTSTAGE_ID_USER);
else
printf(" id=%d\n", id);
return rec->time_us;
}
static int h_compare_record(const void *r1, const void *r2)
{
const struct bootstage_record *rec1 = r1, *rec2 = r2;
return rec1->time_us > rec2->time_us ? 1 : -1;
}
void bootstage_report(void)
{
struct bootstage_record *rec = record;
int id;
uint32_t prev;
puts("Timer summary in microseconds:\n");
printf("%11s%11s %s\n", "Mark", "Elapsed", "Stage");
/* Fake the first record - we could get it from early boot */
rec->name = "reset";
rec->time_us = 0;
prev = print_time_record(BOOTSTAGE_ID_AWAKE, rec, 0);
/* Sort records by increasing time */
qsort(record, ARRAY_SIZE(record), sizeof(*rec), h_compare_record);
for (id = 0; id < BOOTSTAGE_ID_COUNT; id++, rec++) {
if (rec->time_us != 0)
prev = print_time_record(rec->id, rec, prev);
}
if (next_id > BOOTSTAGE_ID_COUNT)
printf("(Overflowed internal boot id table by %d entries\n"
"- please increase CONFIG_BOOTSTAGE_USER_COUNT\n",
next_id - BOOTSTAGE_ID_COUNT);
}
ulong __timer_get_boot_us(void)
{
static ulong base_time;
/*
* We can't implement this properly. Return 0 on the first call and
* larger values after that.
*/
if (base_time)
return get_timer(base_time) * 1000;
base_time = get_timer(0);
return 0;
}
ulong timer_get_boot_us(void)
__attribute__((weak, alias("__timer_get_boot_us")));
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