2 * Copyright (c) 2011, Google Inc. All rights reserved.
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * This module records the progress of boot and arbitrary commands, and
26 * permits accurate timestamping of each.
28 * TBD: Pass timings to kernel in the FDT
34 DECLARE_GLOBAL_DATA_PTR;
36 enum bootstage_flags {
37 BOOTSTAGEF_ERROR = 1 << 0, /* Error record */
38 BOOTSTAGEF_ALLOC = 1 << 1, /* Allocate an id */
41 struct bootstage_record {
44 int flags; /* see enum bootstage_flags */
48 static struct bootstage_record record[BOOTSTAGE_ID_COUNT] = { {1} };
49 static int next_id = BOOTSTAGE_ID_USER;
51 ulong bootstage_add_record(enum bootstage_id id, const char *name,
54 struct bootstage_record *rec;
55 ulong mark = timer_get_boot_us();
57 if (flags & BOOTSTAGEF_ALLOC)
60 if (id < BOOTSTAGE_ID_COUNT) {
63 /* Only record the first event for each */
72 /* Tell the board about this progress */
73 show_boot_progress(flags & BOOTSTAGEF_ERROR ? -id : id);
78 ulong bootstage_mark(enum bootstage_id id)
80 return bootstage_add_record(id, NULL, 0);
83 ulong bootstage_error(enum bootstage_id id)
85 return bootstage_add_record(id, NULL, BOOTSTAGEF_ERROR);
88 ulong bootstage_mark_name(enum bootstage_id id, const char *name)
92 if (id == BOOTSTAGE_ID_ALLOC)
93 flags = BOOTSTAGEF_ALLOC;
94 return bootstage_add_record(id, name, flags);
97 static void print_time(unsigned long us_time)
102 /* We don't seem to have %'d in U-Boot */
103 sprintf(str, "%12lu", us_time);
104 for (s = str + 3; *s; s += grab) {
106 putc(s[-1] != ' ' ? ',' : ' ');
107 printf("%.*s", grab, s);
112 static uint32_t print_time_record(enum bootstage_id id,
113 struct bootstage_record *rec, uint32_t prev)
115 print_time(rec->time_us);
116 print_time(rec->time_us - prev);
118 printf(" %s\n", rec->name);
119 else if (id >= BOOTSTAGE_ID_USER)
120 printf(" user_%d\n", id - BOOTSTAGE_ID_USER);
122 printf(" id=%d\n", id);
126 static int h_compare_record(const void *r1, const void *r2)
128 const struct bootstage_record *rec1 = r1, *rec2 = r2;
130 return rec1->time_us > rec2->time_us ? 1 : -1;
133 void bootstage_report(void)
135 struct bootstage_record *rec = record;
139 puts("Timer summary in microseconds:\n");
140 printf("%11s%11s %s\n", "Mark", "Elapsed", "Stage");
142 /* Fake the first record - we could get it from early boot */
145 prev = print_time_record(BOOTSTAGE_ID_AWAKE, rec, 0);
147 /* Sort records by increasing time */
148 qsort(record, ARRAY_SIZE(record), sizeof(*rec), h_compare_record);
150 for (id = 0; id < BOOTSTAGE_ID_COUNT; id++, rec++) {
151 if (rec->time_us != 0)
152 prev = print_time_record(rec->id, rec, prev);
154 if (next_id > BOOTSTAGE_ID_COUNT)
155 printf("(Overflowed internal boot id table by %d entries\n"
156 "- please increase CONFIG_BOOTSTAGE_USER_COUNT\n",
157 next_id - BOOTSTAGE_ID_COUNT);
160 ulong __timer_get_boot_us(void)
162 static ulong base_time;
165 * We can't implement this properly. Return 0 on the first call and
166 * larger values after that.
169 return get_timer(base_time) * 1000;
170 base_time = get_timer(0);
174 ulong timer_get_boot_us(void)
175 __attribute__((weak, alias("__timer_get_boot_us")));