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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2013 Free Software Foundation, Inc.
*
* GRUB 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, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/command.h>
#include <grub/i18n.h>
#include <grub/coreboot/lbio.h>
#include <grub/i386/tsc.h>
GRUB_MOD_LICENSE ("GPLv3+");
static grub_uint32_t
tsc2ms (grub_uint64_t tsc)
{
grub_uint64_t ah = tsc >> 32;
grub_uint64_t al = tsc & 0xffffffff;
return ((al * grub_tsc_rate) >> 32) + ah * grub_tsc_rate;
}
static const char *descs[] = {
[1] = "romstage",
[2] = "before RAM init",
[3] = "after RAM init",
[4] = "end of romstage",
[5] = "start of verified boot",
[6] = "end of verified boot",
[8] = "start of RAM copy",
[9] = "end of RAM copy",
[10] = "start of ramstage",
[11] = "start of bootblock",
[12] = "end of bootblock",
[13] = "starting to load romstage",
[14] = "finished loading romstage",
[15] = "starting LZMA decompress (ignore for x86)",
[16] = "finished LZMA decompress (ignore for x86)",
[30] = "device enumerate",
[40] = "device configure",
[50] = "device enable",
[60] = "device initialize",
[70] = "device done",
[75] = "CBMEM POST",
[80] = "writing tables",
[90] = "loading payload",
[98] = "wake jump",
[99] = "selfboot jump",
};
static int
iterate_linuxbios_table (grub_linuxbios_table_item_t table_item,
void *data)
{
int *available = data;
grub_uint64_t last_tsc = 0;
struct grub_linuxbios_timestamp_table *ts_table;
unsigned i;
if (table_item->tag != GRUB_LINUXBIOS_MEMBER_TIMESTAMPS)
return 0;
*available = 1;
ts_table = (struct grub_linuxbios_timestamp_table *) (grub_addr_t)
*(grub_uint64_t *) (table_item + 1);
for (i = 0; i < ts_table->used; i++)
{
grub_uint32_t tmabs = tsc2ms (ts_table->entries[i].tsc);
grub_uint32_t tmrel = tsc2ms (ts_table->entries[i].tsc - last_tsc);
last_tsc = ts_table->entries[i].tsc;
grub_printf ("%3d.%03ds %2d.%03ds %02d %s\n",
tmabs / 1000, tmabs % 1000, tmrel / 1000, tmrel % 1000,
ts_table->entries[i].id,
(ts_table->entries[i].id < ARRAY_SIZE (descs)
&& descs[ts_table->entries[i].id])
? descs[ts_table->entries[i].id] : "");
}
return 1;
}
static grub_err_t
grub_cmd_coreboot_boottime (struct grub_command *cmd __attribute__ ((unused)),
int argc __attribute__ ((unused)),
char *argv[] __attribute__ ((unused)))
{
int available = 0;
grub_linuxbios_table_iterate (iterate_linuxbios_table, &available);
if (!available)
{
grub_puts_ (N_("No boot time statistics is available\n"));
return 0;
}
return 0;
}
static grub_command_t cmd_boottime;
GRUB_MOD_INIT(cbtime)
{
cmd_boottime =
grub_register_command ("coreboot_boottime", grub_cmd_coreboot_boottime,
0, N_("Show coreboot boot time statistics."));
}
GRUB_MOD_FINI(cbtime)
{
grub_unregister_command (cmd_boottime);
}
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