1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
* This file is part of the coreboot project.
*
* Copyright 2010 Google Inc.
*
* 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; version 2 of
* the License.
*
* 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.
*/
#include <arch/exception.h>
#include <bootblock_common.h>
#include <console/console.h>
#include <delay.h>
#include <pc80/mc146818rtc.h>
#include <program_loading.h>
#include <symbols.h>
#include <timestamp.h>
DECLARE_OPTIONAL_REGION(timestamp);
__weak void bootblock_mainboard_early_init(void) { /* no-op */ }
__weak void bootblock_soc_early_init(void) { /* do nothing */ }
__weak void bootblock_soc_init(void) { /* do nothing */ }
__weak void bootblock_mainboard_init(void) { /* do nothing */ }
/*
* This is a the same as the bootblock main(), with the difference that it does
* not collect a timestamp. Instead it accepts the initial timestamp and
* possibly additional timestamp entries as arguments. This can be used in cases
* where earlier stamps are available. Note that this function is designed to be
* entered from C code. This function assumes that the timer has already been
* initialized, so it does not call init_timer().
*/
static void bootblock_main_with_timestamp(uint64_t base_timestamp,
struct timestamp_entry *timestamps, size_t num_timestamps)
{
/* Initialize timestamps if we have TIMESTAMP region in memlayout.ld. */
if (CONFIG(COLLECT_TIMESTAMPS) &&
REGION_SIZE(timestamp) > 0) {
int i;
timestamp_init(base_timestamp);
for (i = 0; i < num_timestamps; i++)
timestamp_add(timestamps[i].entry_id,
timestamps[i].entry_stamp);
}
timestamp_add_now(TS_START_BOOTBLOCK);
bootblock_soc_early_init();
bootblock_mainboard_early_init();
sanitize_cmos();
cmos_post_init();
if (CONFIG(BOOTBLOCK_CONSOLE)) {
console_init();
exception_init();
}
bootblock_soc_init();
bootblock_mainboard_init();
timestamp_add_now(TS_END_BOOTBLOCK);
run_romstage();
}
void bootblock_main_with_basetime(uint64_t base_timestamp)
{
bootblock_main_with_timestamp(base_timestamp, NULL, 0);
}
void main(void)
{
uint64_t base_timestamp = 0;
init_timer();
if (CONFIG(COLLECT_TIMESTAMPS))
base_timestamp = timestamp_get();
bootblock_main_with_timestamp(base_timestamp, NULL, 0);
}
#if CONFIG(COMPRESS_BOOTBLOCK)
/*
* This is the bootblock entry point when it is run after a decompressor stage.
* For non-decompressor builds, _start is generally defined in architecture-
* specific assembly code. In decompressor builds that architecture
* initialization code already ran in the decompressor, so the bootblock can
* start straight into common code with a C environment.
*/
void _start(struct bootblock_arg *arg);
void _start(struct bootblock_arg *arg)
{
bootblock_main_with_timestamp(arg->base_timestamp, arg->timestamps,
arg->num_timestamps);
}
#endif
|
