LXR uboot/arch/x86/cpu/coreboot/timestamp.c

   1/*
   2 * This file is part of the coreboot project.
   3 *
   4 * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8
   9#include <common.h>
  10#include <asm/arch/timestamp.h>
  11#include <asm/arch/sysinfo.h>
  12#include <linux/compiler.h>
  13
  14struct timestamp_entry {
  15        uint32_t        entry_id;
  16        uint64_t        entry_stamp;
  17} __packed;
  18
  19struct timestamp_table {
  20        uint64_t        base_time;
  21        uint32_t        max_entries;
  22        uint32_t        num_entries;
  23        struct timestamp_entry entries[0]; /* Variable number of entries */
  24} __packed;
  25
  26static struct timestamp_table *ts_table  __attribute__((section(".data")));
  27
  28void timestamp_init(void)
  29{
  30        timestamp_add_now(TS_U_BOOT_INITTED);
  31}
  32
  33void timestamp_add(enum timestamp_id id, uint64_t ts_time)
  34{
  35        struct timestamp_entry *tse;
  36
  37        if (!ts_table || (ts_table->num_entries == ts_table->max_entries))
  38                return;
  39
  40        tse = &ts_table->entries[ts_table->num_entries++];
  41        tse->entry_id = id;
  42        tse->entry_stamp = ts_time - ts_table->base_time;
  43}
  44
  45void timestamp_add_now(enum timestamp_id id)
  46{
  47        timestamp_add(id, rdtsc());
  48}
  49
  50int timestamp_add_to_bootstage(void)
  51{
  52        uint i;
  53
  54        if (!ts_table)
  55                return -1;
  56
  57        for (i = 0; i < ts_table->num_entries; i++) {
  58                struct timestamp_entry *tse = &ts_table->entries[i];
  59                const char *name = NULL;
  60
  61                switch (tse->entry_id) {
  62                case TS_START_ROMSTAGE:
  63                        name = "start-romstage";
  64                        break;
  65                case TS_BEFORE_INITRAM:
  66                        name = "before-initram";
  67                        break;
  68                case TS_DEVICE_INITIALIZE:
  69                        name = "device-initialize";
  70                        break;
  71                case TS_DEVICE_DONE:
  72                        name = "device-done";
  73                        break;
  74                case TS_SELFBOOT_JUMP:
  75                        name = "selfboot-jump";
  76                        break;
  77                }
  78                if (name) {
  79                        bootstage_add_record(0, name, BOOTSTAGEF_ALLOC,
  80                                             tse->entry_stamp /
  81                                                        get_tbclk_mhz());
  82                }
  83        }
  84
  85        return 0;
  86}
  87