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/*
* 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/>.
*/
#ifndef GRUB_CMOS_H
#define GRUB_CMOS_H 1
#include <grub/types.h>
#include <grub/cpu/io.h>
#include <grub/cpu/cmos.h>
#define GRUB_CMOS_INDEX_SECOND 0
#define GRUB_CMOS_INDEX_SECOND_ALARM 1
#define GRUB_CMOS_INDEX_MINUTE 2
#define GRUB_CMOS_INDEX_MINUTE_ALARM 3
#define GRUB_CMOS_INDEX_HOUR 4
#define GRUB_CMOS_INDEX_HOUR_ALARM 5
#define GRUB_CMOS_INDEX_DAY_OF_WEEK 6
#define GRUB_CMOS_INDEX_DAY_OF_MONTH 7
#define GRUB_CMOS_INDEX_MONTH 8
#define GRUB_CMOS_INDEX_YEAR 9
#define GRUB_CMOS_INDEX_STATUS_A 0xA
#define GRUB_CMOS_INDEX_STATUS_B 0xB
#define GRUB_CMOS_INDEX_STATUS_C 0xC
#define GRUB_CMOS_INDEX_STATUS_D 0xD
#define GRUB_CMOS_STATUS_B_DAYLIGHT 1
#define GRUB_CMOS_STATUS_B_24HOUR 2
#define GRUB_CMOS_STATUS_B_BINARY 4
static inline grub_uint8_t
grub_bcd_to_num (grub_uint8_t a)
{
return ((a >> 4) * 10 + (a & 0xF));
}
static inline grub_uint8_t
grub_num_to_bcd (grub_uint8_t a)
{
return (((a / 10) << 4) + (a % 10));
}
static inline grub_uint8_t
grub_cmos_read (grub_uint8_t index)
{
grub_outb (index, GRUB_CMOS_ADDR_REG);
return grub_inb (GRUB_CMOS_DATA_REG);
}
static inline void
grub_cmos_write (grub_uint8_t index, grub_uint8_t value)
{
grub_outb (index, GRUB_CMOS_ADDR_REG);
grub_outb (value, GRUB_CMOS_DATA_REG);
}
#endif /* GRUB_CMOS_H */
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