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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-12-11 22:14:09 +01:00
parent febfc12c6e
commit d4af2a73dc
9 changed files with 127 additions and 53 deletions
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48
include/grub/i386/cmos.h
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@ -20,55 +20,9 @@
#define GRUB_CPU_CMOS_H 1
#include <grub/types.h>
#include <grub/i386/io.h>
#include <grub/cpu/io.h>
#define GRUB_CMOS_ADDR_REG 0x70
#define GRUB_CMOS_DATA_REG 0x71
#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_CPU_CMOS_H */