summaryrefslogtreecommitdiff
path: root/arch/x86/cpu/coreboot/timestamp.c
blob: b3827951e6e41852875bbd68dc9e500cf0d557b6 (plain)
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
/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/arch/timestamp.h>
#include <asm/arch/sysinfo.h>
#include <linux/compiler.h>

struct timestamp_entry {
	uint32_t	entry_id;
	uint64_t	entry_stamp;
} __packed;

struct timestamp_table {
	uint64_t	base_time;
	uint32_t	max_entries;
	uint32_t	num_entries;
	struct timestamp_entry entries[0]; /* Variable number of entries */
} __packed;

static struct timestamp_table *ts_table  __attribute__((section(".data")));

void timestamp_init(void)
{
	timestamp_add_now(TS_U_BOOT_INITTED);
}

void timestamp_add(enum timestamp_id id, uint64_t ts_time)
{
	struct timestamp_entry *tse;

	if (!ts_table || (ts_table->num_entries == ts_table->max_entries))
		return;

	tse = &ts_table->entries[ts_table->num_entries++];
	tse->entry_id = id;
	tse->entry_stamp = ts_time - ts_table->base_time;
}

void timestamp_add_now(enum timestamp_id id)
{
	timestamp_add(id, rdtsc());
}

int timestamp_add_to_bootstage(void)
{
	uint i;

	if (!ts_table)
		return -1;

	for (i = 0; i < ts_table->num_entries; i++) {
		struct timestamp_entry *tse = &ts_table->entries[i];
		const char *name = NULL;

		switch (tse->entry_id) {
		case TS_START_ROMSTAGE:
			name = "start-romstage";
			break;
		case TS_BEFORE_INITRAM:
			name = "before-initram";
			break;
		case TS_DEVICE_INITIALIZE:
			name = "device-initialize";
			break;
		case TS_DEVICE_DONE:
			name = "device-done";
			break;
		case TS_SELFBOOT_JUMP:
			name = "selfboot-jump";
			break;
		}
		if (name) {
			bootstage_add_record(0, name, BOOTSTAGEF_ALLOC,
					     tse->entry_stamp /
							get_tbclk_mhz());
		}
	}

	return 0;
}