| #ifndef __RTC_H |
| #define __RTC_H |
| |
| #define PORT_CMOS_INDEX 0x0070 |
| #define PORT_CMOS_DATA 0x0071 |
| |
| // PORT_CMOS_INDEX nmi disable bit |
| #define NMI_DISABLE_BIT 0x80 |
| |
| // Standard BIOS RTC chip entries |
| #define CMOS_RTC_SECONDS 0x00 |
| #define CMOS_RTC_SECONDS_ALARM 0x01 |
| #define CMOS_RTC_MINUTES 0x02 |
| #define CMOS_RTC_MINUTES_ALARM 0x03 |
| #define CMOS_RTC_HOURS 0x04 |
| #define CMOS_RTC_HOURS_ALARM 0x05 |
| #define CMOS_RTC_DAY_WEEK 0x06 |
| #define CMOS_RTC_DAY_MONTH 0x07 |
| #define CMOS_RTC_MONTH 0x08 |
| #define CMOS_RTC_YEAR 0x09 |
| #define CMOS_STATUS_A 0x0a |
| #define CMOS_STATUS_B 0x0b |
| #define CMOS_STATUS_C 0x0c |
| #define CMOS_STATUS_D 0x0d |
| #define CMOS_RESET_CODE 0x0f |
| |
| // QEMU cmos config fields. DO NOT ADD MORE. (All new content should |
| // be passed via the fw_cfg "file" interface.) |
| #define CMOS_FLOPPY_DRIVE_TYPE 0x10 |
| #define CMOS_DISK_DATA 0x12 |
| #define CMOS_EQUIPMENT_INFO 0x14 |
| #define CMOS_DISK_DRIVE1_TYPE 0x19 |
| #define CMOS_DISK_DRIVE2_TYPE 0x1a |
| #define CMOS_DISK_DRIVE1_CYL 0x1b |
| #define CMOS_DISK_DRIVE2_CYL 0x24 |
| #define CMOS_MEM_EXTMEM_LOW 0x30 |
| #define CMOS_MEM_EXTMEM_HIGH 0x31 |
| #define CMOS_CENTURY 0x32 |
| #define CMOS_MEM_EXTMEM2_LOW 0x34 |
| #define CMOS_MEM_EXTMEM2_HIGH 0x35 |
| #define CMOS_BIOS_BOOTFLAG1 0x38 |
| #define CMOS_BIOS_DISKTRANSFLAG 0x39 |
| #define CMOS_BIOS_BOOTFLAG2 0x3d |
| #define CMOS_MEM_HIGHMEM_LOW 0x5b |
| #define CMOS_MEM_HIGHMEM_MID 0x5c |
| #define CMOS_MEM_HIGHMEM_HIGH 0x5d |
| #define CMOS_BIOS_SMP_COUNT 0x5f |
| |
| // RTC register flags |
| #define RTC_A_UIP 0x80 |
| |
| #define RTC_B_SET 0x80 |
| #define RTC_B_PIE 0x40 |
| #define RTC_B_AIE 0x20 |
| #define RTC_B_UIE 0x10 |
| #define RTC_B_BIN 0x04 |
| #define RTC_B_24HR 0x02 |
| #define RTC_B_DSE 0x01 |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include "types.h" // u8 |
| |
| // rtc.c |
| u8 rtc_read(u8 index); |
| void rtc_write(u8 index, u8 val); |
| void rtc_mask(u8 index, u8 off, u8 on); |
| int rtc_updating(void); |
| void rtc_setup(void); |
| void rtc_use(void); |
| void rtc_release(void); |
| |
| #endif // !__ASSEMBLY__ |
| |
| #endif // rtc.h |
