78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
/*
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* Registers for the SGS-Thomson M48T35 Timekeeper RAM chip
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* and
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* Registers for the SGS-Thomson M48T37 Timekeeper RAM chip
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* The 37 is the 35 plus alarm and century thus the offsets
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* are shifted by the extra registers.
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*/
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#ifndef __PPC_M48T35_H
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#define __PPC_M48T35_H
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/* RTC offsets */
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#define M48T35_RTC_FLAGS (-8) /* the negative regs are really T37 only */
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#define M48T35_RTC_CENTURY (-7)
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#define M48T35_RTC_AL_SEC (-6)
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#define M48T35_RTC_AL_MIN (-5)
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#define M48T35_RTC_AL_HRS (-4)
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#define M48T35_RTC_AL_DOM (-3)
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#define M48T35_RTC_INTERRUPT (-2)
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#define M48T35_RTC_WATCHDOG (-1)
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#define M48T35_RTC_CONTROL 0 /* T35 starts here */
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#define M48T35_RTC_SECONDS 1
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#define M48T35_RTC_MINUTES 2
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#define M48T35_RTC_HOURS 3
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#define M48T35_RTC_DAY 4
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#define M48T35_RTC_DOM 5
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#define M48T35_RTC_MONTH 6
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#define M48T35_RTC_YEAR 7
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/* this way help us know which bits go with which regs */
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#define M48T35_RTC_FLAGS_BL 0x10
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#define M48T35_RTC_FLAGS_AF 0x40
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#define M48T35_RTC_FLAGS_WDF 0x80
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#define M48T35_RTC_INTERRUPT_AFE 0x80
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#define M48T35_RTC_INTERRUPT_ABE 0x20
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#define M48T35_RTC_INTERRUPT_ALL (M48T35_RTC_INTERRUPT_AFE|M48T35_RTC_INTERRUPT_ABE)
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#define M48T35_RTC_WATCHDOG_RB 0x03
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#define M48T35_RTC_WATCHDOG_BMB 0x7c
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#define M48T35_RTC_WATCHDOG_WDS 0x80
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#define M48T35_RTC_WATCHDOG_ALL (M48T35_RTC_WATCHDOG_RB|M48T35_RTC_WATCHDOG_BMB|M48T35_RTC_W)
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#define M48T35_RTC_CONTROL_WRITE 0x80
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#define M48T35_RTC_CONTROL_READ 0x40
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#define M48T35_RTC_CONTROL_CAL_SIGN 0x20
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#define M48T35_RTC_CONTROL_CAL_VALUE 0x1f
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#define M48T35_RTC_CONTROL_LOCKED (M48T35_RTC_WRITE|M48T35_RTC_READ)
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#define M48T35_RTC_CONTROL_CALIBRATION (M48T35_RTC_CONTROL_CAL_SIGN|M48T35_RTC_CONTROL_CAL_VALUE)
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#define M48T35_RTC_SECONDS_SEC_1 0x0f
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#define M48T35_RTC_SECONDS_SEC_10 0x70
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#define M48T35_RTC_SECONDS_ST 0x80
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#define M48T35_RTC_SECONDS_SEC_ALL (M48T35_RTC_SECONDS_SEC_1|M48T35_RTC_SECONDS_SEC_10)
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#define M48T35_RTC_MINUTES_MIN_1 0x0f
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#define M48T35_RTC_MINUTES_MIN_10 0x70
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#define M48T35_RTC_MINUTES_MIN_ALL (M48T35_RTC_MINUTES_MIN_1|M48T35_RTC_MINUTES_MIN_10)
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#define M48T35_RTC_HOURS_HRS_1 0x0f
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#define M48T35_RTC_HOURS_HRS_10 0x30
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#define M48T35_RTC_HOURS_HRS_ALL (M48T35_RTC_HOURS_HRS_1|M48T35_RTC_HOURS_HRS_10)
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#define M48T35_RTC_DAY_DAY_1 0x03
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#define M48T35_RTC_DAY_FT 0x40
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#define M48T35_RTC_ALARM_OFF 0x00
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#define M48T35_RTC_WATCHDOG_OFF 0x00
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/* legacy */
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#define M48T35_RTC_SET 0x80
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#define M48T35_RTC_STOPPED 0x80
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#define M48T35_RTC_READ 0x40
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#endif
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