142 lines
3.7 KiB
C
142 lines
3.7 KiB
C
/* kern/cmos_datetime.c - CMOS datetime function.
|
|
*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2008,2009 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/datetime.h>
|
|
#include <grub/ieee1275/ieee1275.h>
|
|
#include <grub/misc.h>
|
|
|
|
static char *rtc = 0;
|
|
|
|
static void
|
|
find_rtc (void)
|
|
{
|
|
auto int hook (struct grub_ieee1275_devalias *alias);
|
|
int hook (struct grub_ieee1275_devalias *alias)
|
|
{
|
|
if (grub_strcmp (alias->type, "rtc") == 0)
|
|
{
|
|
grub_dprintf ("datetime", "Found RTC %s\n", alias->path);
|
|
rtc = grub_strdup (alias->path);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
grub_ieee1275_devices_iterate (hook);
|
|
}
|
|
|
|
grub_err_t
|
|
grub_get_datetime (struct grub_datetime *datetime)
|
|
{
|
|
struct get_time_args
|
|
{
|
|
struct grub_ieee1275_common_hdr common;
|
|
grub_ieee1275_cell_t method;
|
|
grub_ieee1275_cell_t device;
|
|
grub_ieee1275_cell_t catch_result;
|
|
grub_ieee1275_cell_t year;
|
|
grub_ieee1275_cell_t month;
|
|
grub_ieee1275_cell_t day;
|
|
grub_ieee1275_cell_t hour;
|
|
grub_ieee1275_cell_t minute;
|
|
grub_ieee1275_cell_t second;
|
|
}
|
|
args;
|
|
int status;
|
|
grub_ieee1275_ihandle_t ihandle;
|
|
|
|
if (!rtc)
|
|
find_rtc ();
|
|
if (!rtc)
|
|
return grub_error (GRUB_ERR_IO, "no RTC found");
|
|
|
|
status = grub_ieee1275_open (rtc, &ihandle);
|
|
if (status == -1)
|
|
return grub_error (GRUB_ERR_IO, "couldn't open RTC");
|
|
|
|
INIT_IEEE1275_COMMON (&args.common, "call-method", 2, 7);
|
|
args.device = (grub_ieee1275_cell_t) ihandle;
|
|
args.method = (grub_ieee1275_cell_t) "get-time";
|
|
|
|
status = IEEE1275_CALL_ENTRY_FN (&args);
|
|
|
|
grub_ieee1275_close (ihandle);
|
|
|
|
if (status == -1)
|
|
return grub_error (GRUB_ERR_IO, "get-time failed");
|
|
|
|
datetime->year = args.year;
|
|
datetime->month = args.month;
|
|
datetime->day = args.day;
|
|
datetime->hour = args.hour;
|
|
datetime->minute = args.minute;
|
|
datetime->second = args.second;
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|
|
|
|
grub_err_t
|
|
grub_set_datetime (struct grub_datetime *datetime)
|
|
{
|
|
struct set_time_args
|
|
{
|
|
struct grub_ieee1275_common_hdr common;
|
|
grub_ieee1275_cell_t method;
|
|
grub_ieee1275_cell_t device;
|
|
grub_ieee1275_cell_t year;
|
|
grub_ieee1275_cell_t month;
|
|
grub_ieee1275_cell_t day;
|
|
grub_ieee1275_cell_t hour;
|
|
grub_ieee1275_cell_t minute;
|
|
grub_ieee1275_cell_t second;
|
|
grub_ieee1275_cell_t catch_result;
|
|
}
|
|
args;
|
|
int status;
|
|
grub_ieee1275_ihandle_t ihandle;
|
|
|
|
if (!rtc)
|
|
find_rtc ();
|
|
if (!rtc)
|
|
return grub_error (GRUB_ERR_IO, "no RTC found");
|
|
|
|
status = grub_ieee1275_open (rtc, &ihandle);
|
|
if (status == -1)
|
|
return grub_error (GRUB_ERR_IO, "couldn't open RTC");
|
|
|
|
INIT_IEEE1275_COMMON (&args.common, "call-method", 8, 1);
|
|
args.device = (grub_ieee1275_cell_t) ihandle;
|
|
args.method = (grub_ieee1275_cell_t) "set-time";
|
|
|
|
args.year = datetime->year;
|
|
args.month = datetime->month;
|
|
args.day = datetime->day;
|
|
args.hour = datetime->hour;
|
|
args.minute = datetime->minute;
|
|
args.second = datetime->second;
|
|
|
|
status = IEEE1275_CALL_ENTRY_FN (&args);
|
|
|
|
grub_ieee1275_close (ihandle);
|
|
|
|
if (status == -1)
|
|
return grub_error (GRUB_ERR_IO, "set-time failed");
|
|
|
|
return GRUB_ERR_NONE;
|
|
}
|