ReactOS  0.4.14-dev-317-g96040ec
xboxrtc.c
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1 /*
2  * FreeLoader
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License along
15  * with this program; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17  */
18 
19 #include <freeldr.h>
20 
21 #define RTC_REGISTER_A 0x0A
22 #define RTC_REG_A_UIP 0x80 /* Update In Progress bit */
23 
24 #define BCD_INT(bcd) (((bcd & 0xf0) >> 4) * 10 + (bcd &0x0f))
25 
26 static UCHAR
28 {
29  UCHAR Val;
30  Reg |= 0x80;
31 
32  WRITE_PORT_UCHAR((PUCHAR)0x70, Reg);
33  Val = READ_PORT_UCHAR((PUCHAR)0x71);
34  WRITE_PORT_UCHAR((PUCHAR)0x70, 0);
35 
36  return(Val);
37 }
38 
39 TIMEINFO*
41 {
42  static TIMEINFO TimeInfo;
43 
45  {
46  ;
47  }
48 
49  TimeInfo.Second = BCD_INT(HalpQueryCMOS(0));
50  TimeInfo.Minute = BCD_INT(HalpQueryCMOS(2));
51  TimeInfo.Hour = BCD_INT(HalpQueryCMOS(4));
52  TimeInfo.Day = BCD_INT(HalpQueryCMOS(7));
53  TimeInfo.Month = BCD_INT(HalpQueryCMOS(8));
54  TimeInfo.Year = BCD_INT(HalpQueryCMOS(9));
55  if (TimeInfo.Year > 80)
56  TimeInfo.Year += 1900;
57  else
58  TimeInfo.Year += 2000;
59 
60  return &TimeInfo;
61 }
62 
63 /* EOF */
static UCHAR HalpQueryCMOS(UCHAR Reg)
Definition: xboxrtc.c:27
unsigned char * PUCHAR
Definition: retypes.h:3
UCHAR NTAPI READ_PORT_UCHAR(PUCHAR Address)
Definition: mach.c:528
USHORT Second
Definition: fw.h:16
USHORT Month
Definition: fw.h:12
USHORT Minute
Definition: fw.h:15
Definition: fw.h:9
USHORT Year
Definition: fw.h:11
unsigned char UCHAR
Definition: xmlstorage.h:181
#define BCD_INT(bcd)
Definition: xboxrtc.c:24
USHORT Hour
Definition: fw.h:14
#define RTC_REGISTER_A
Definition: xboxrtc.c:21
void WRITE_PORT_UCHAR(PUCHAR Address, UCHAR Value)
Definition: mach.c:532
USHORT Day
Definition: fw.h:13
#define RTC_REG_A_UIP
Definition: xboxrtc.c:22
TIMEINFO * XboxGetTime(VOID)
Definition: xboxrtc.c:40