1/* 2 * This file is part of the coreboot project. 3 * 4 * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA 18 */ 19 20#include <common.h> 21#include <asm/arch/timestamp.h> 22#include <asm/arch/sysinfo.h> 23#include <linux/compiler.h> 24 25struct timestamp_entry { 26 uint32_t entry_id; 27 uint64_t entry_stamp; 28} __packed; 29 30struct timestamp_table { 31 uint64_t base_time; 32 uint32_t max_entries; 33 uint32_t num_entries; 34 struct timestamp_entry entries[0]; /* Variable number of entries */ 35} __packed; 36 37static struct timestamp_table *ts_table __attribute__((section(".data"))); 38 39void timestamp_init(void) 40{ 41 ts_table = lib_sysinfo.tstamp_table; 42 timer_set_tsc_base(ts_table->base_time); 43 timestamp_add_now(TS_U_BOOT_INITTED); 44} 45 46void timestamp_add(enum timestamp_id id, uint64_t ts_time) 47{ 48 struct timestamp_entry *tse; 49 50 if (!ts_table || (ts_table->num_entries == ts_table->max_entries)) 51 return; 52 53 tse = &ts_table->entries[ts_table->num_entries++]; 54 tse->entry_id = id; 55 tse->entry_stamp = ts_time - ts_table->base_time; 56} 57 58void timestamp_add_now(enum timestamp_id id) 59{ 60 timestamp_add(id, rdtsc()); 61} 62