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5397d8058c
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
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2011 The ChromiumOS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <common.h>
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#include <asm/arch/timestamp.h>
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#include <asm/arch/sysinfo.h>
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#include <linux/compiler.h>
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struct timestamp_entry {
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uint32_t entry_id;
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uint64_t entry_stamp;
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} __packed;
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struct timestamp_table {
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uint64_t base_time;
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uint32_t max_entries;
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uint32_t num_entries;
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struct timestamp_entry entries[0]; /* Variable number of entries */
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} __packed;
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static struct timestamp_table *ts_table __attribute__((section(".data")));
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void timestamp_init(void)
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{
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ts_table = lib_sysinfo.tstamp_table;
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#ifdef CONFIG_SYS_X86_TSC_TIMER
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timer_set_base(ts_table->base_time);
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#endif
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timestamp_add_now(TS_U_BOOT_INITTED);
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}
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void timestamp_add(enum timestamp_id id, uint64_t ts_time)
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{
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struct timestamp_entry *tse;
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if (!ts_table || (ts_table->num_entries == ts_table->max_entries))
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return;
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tse = &ts_table->entries[ts_table->num_entries++];
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tse->entry_id = id;
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tse->entry_stamp = ts_time - ts_table->base_time;
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}
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void timestamp_add_now(enum timestamp_id id)
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{
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timestamp_add(id, rdtsc());
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}
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int timestamp_add_to_bootstage(void)
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{
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uint i;
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if (!ts_table)
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return -1;
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for (i = 0; i < ts_table->num_entries; i++) {
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struct timestamp_entry *tse = &ts_table->entries[i];
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const char *name = NULL;
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switch (tse->entry_id) {
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case TS_START_ROMSTAGE:
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name = "start-romstage";
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break;
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case TS_BEFORE_INITRAM:
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name = "before-initram";
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break;
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case TS_DEVICE_INITIALIZE:
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name = "device-initialize";
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break;
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case TS_DEVICE_DONE:
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name = "device-done";
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break;
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case TS_SELFBOOT_JUMP:
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name = "selfboot-jump";
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break;
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}
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if (name) {
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bootstage_add_record(0, name, BOOTSTAGEF_ALLOC,
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tse->entry_stamp /
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get_tbclk_mhz());
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}
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}
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return 0;
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}
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