mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-01 14:59:08 +09:00
![Simon Glass](/assets/img/avatar_default.png)
Coreboot provides a lot of useful timing information. Provide a facility to add this to bootstage on start-up. Signed-off-by: Simon Glass <sjg@chromium.org>
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/*
|
|
* This file is part of the coreboot project.
|
|
*
|
|
* Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
|
|
*/
|
|
|
|
#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)
|
|
{
|
|
ts_table = lib_sysinfo.tstamp_table;
|
|
#ifdef CONFIG_SYS_X86_TSC_TIMER
|
|
timer_set_base(ts_table->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;
|
|
}
|