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/*
* 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)
{
#ifdef CONFIG_SYS_X86_TSC_TIMER
uint64_t base_time;
#endif
ts_table = lib_sysinfo.tstamp_table;
#ifdef CONFIG_SYS_X86_TSC_TIMER
/*
* If coreboot is built with CONFIG_COLLECT_TIMESTAMPS, use the value
* of base_time in coreboot's timestamp table as our timer base,
* otherwise TSC counter value will be used.
*
* Sometimes even coreboot is built with CONFIG_COLLECT_TIMESTAMPS,
* the value of base_time in the timestamp table is still zero, so
* we must exclude this case too (this is currently seen on booting
* coreboot in qemu)
*/
if (ts_table && ts_table->base_time)
base_time = ts_table->base_time;
else
base_time = rdtsc();
timer_set_base(base_time);
#endif
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;
}
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