| [9] | 1 | /*
|
|---|
| 2 | ibm/cmos.h
|
|---|
| 3 |
|
|---|
| 4 | Created: Dec 1998 by Philip Homburg <philip@cs.vu.nl>
|
|---|
| 5 |
|
|---|
| 6 | Definitions for the CMOS/realtime clock. Based on the datasheet for the
|
|---|
| 7 | Dallas DS12887, compatible with the Motorola MC146818
|
|---|
| 8 | */
|
|---|
| 9 |
|
|---|
| 10 | #define RTC_INDEX 0x70 /* Bit 7 = NMI enable (1) / disable (0)
|
|---|
| 11 | * bits 0..6 index
|
|---|
| 12 | */
|
|---|
| 13 | #define RTC_IO 0x71 /* Data register,
|
|---|
| 14 | * Note: the operation following a write to
|
|---|
| 15 | * RTC_INDEX should an access (read or write)
|
|---|
| 16 | * to RTC_IO
|
|---|
| 17 | */
|
|---|
| 18 |
|
|---|
| 19 | #define RTC_SEC 0x0 /* Seconds register */
|
|---|
| 20 | #define RTC_SEC_ALRM 0x1 /* Seconds register for alarm */
|
|---|
| 21 | #define RTC_MIN 0x2 /* Minutes register */
|
|---|
| 22 | #define RTC_MIN_ALRM 0x3 /* Minutes register for alarm */
|
|---|
| 23 | #define RTC_HOUR 0x4 /* Hours register */
|
|---|
| 24 | #define RTC_HOUR_ALRM 0x5 /* Hours register for alarm */
|
|---|
| 25 | #define RTC_WDAY 0x6 /* Day of the week, 1..7, Sunday = 1 */
|
|---|
| 26 | #define RTC_MDAY 0x7 /* Day of the month, 1..31 */
|
|---|
| 27 | #define RTC_MONTH 0x8 /* Month, 1..12 */
|
|---|
| 28 | #define RTC_YEAR 0x9 /* Year, 0..99 */
|
|---|
| 29 | #define RTC_REG_A 0xA
|
|---|
| 30 | #define RTC_A_UIP 0x80 /* Update in progress. When clear,
|
|---|
| 31 | * no update will occur for 244
|
|---|
| 32 | * micro seconds.
|
|---|
| 33 | */
|
|---|
| 34 | #define RTC_A_DV 0x70 /* Divider bits, valid values are: */
|
|---|
| 35 | #define RTC_A_DV_OK 0x20 /* Normal */
|
|---|
| 36 | #define RTC_A_DV_STOP 0x70 /* Stop, a re-start starts
|
|---|
| 37 | * halfway through a cycle,
|
|---|
| 38 | * i.e. the update occurs after
|
|---|
| 39 | * 500ms.
|
|---|
| 40 | */
|
|---|
| 41 | #define RTC_A_RS 0x0F /* Int. freq */
|
|---|
| 42 | /* 0 None
|
|---|
| 43 | * 1 256 Hz
|
|---|
| 44 | * 2 128 Hz
|
|---|
| 45 | * 3 8192 Hz
|
|---|
| 46 | * 4 4096 Hz
|
|---|
| 47 | * 5 2048 Hz
|
|---|
| 48 | * 6 1024 Hz
|
|---|
| 49 | * 7 512 Hz
|
|---|
| 50 | * 8 256 Hz
|
|---|
| 51 | * 9 128 Hz
|
|---|
| 52 | * 10 64 Hz
|
|---|
| 53 | * 11 32 Hz
|
|---|
| 54 | * 12 16 Hz
|
|---|
| 55 | * 13 8 Hz
|
|---|
| 56 | * 14 4 Hz
|
|---|
| 57 | * 15 2 Hz
|
|---|
| 58 | */
|
|---|
| 59 | #define RTC_A_RS_DEF 6 /* Default freq. */
|
|---|
| 60 | #define RTC_REG_B 0xB
|
|---|
| 61 | #define RTC_B_SET 0x80 /* Inhibit updates */
|
|---|
| 62 | #define RTC_B_PIE 0x40 /* Enable periodic interrupts */
|
|---|
| 63 | #define RTC_B_AIE 0x20 /* Enable alarm interrupts */
|
|---|
| 64 | #define RTC_B_UIE 0x10 /* Enable update ended interrupts */
|
|---|
| 65 | #define RTC_B_SQWE 0x08 /* Enable square wave output */
|
|---|
| 66 | #define RTC_B_DM_BCD 0x04 /* Data is in BCD (otherwise binary) */
|
|---|
| 67 | #define RTC_B_24 0x02 /* Count hours in 24-hour mode */
|
|---|
| 68 | #define RTC_B_DSE 0x01 /* Automatic (wrong) daylight savings
|
|---|
| 69 | * updates
|
|---|
| 70 | */
|
|---|
| 71 | #define RTC_REG_C 0xC
|
|---|
| 72 |
|
|---|
| 73 | /* Contents of the general purpose CMOS RAM (source IBM reference manual) */
|
|---|
| 74 | #define CMOS_STATUS 0xE
|
|---|
| 75 | #define CS_LOST_POWER 0x80 /* Chip lost power */
|
|---|
| 76 | #define CS_BAD_CHKSUM 0x40 /* Checksum is incorrect */
|
|---|
| 77 | #define CS_BAD_CONFIG 0x20 /* Bad configuration info */
|
|---|
| 78 | #define CS_BAD_MEMSIZE 0x10 /* Wrong memory size of CMOS */
|
|---|
| 79 | #define CS_BAD_HD 0x08 /* Harddisk failed */
|
|---|
| 80 | #define CS_BAD_TIME 0x04 /* CMOS time is invalid */
|
|---|
| 81 | /* bits 0 and 1 are reserved */
|
|---|
| 82 |
|
|---|
| 83 | /*
|
|---|
| 84 | * $PchId: cmos.h,v 1.1 1998/12/16 09:14:21 philip Exp $
|
|---|
| 85 | */
|
|---|
