mirror of https://github.com/acidanthera/audk.git
450 lines
8.8 KiB
C
450 lines
8.8 KiB
C
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/*++
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Copyright (c) 2005, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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PcRtc.h
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Abstract:
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Include for real time clock driver
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Revision History
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--*/
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#ifndef _RTC_H_
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#define _RTC_H_
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#include <FrameworkDxe.h>
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#include <Protocol/RealTimeClock.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/IoLib.h>
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#include <Library/TimerLib.h>
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#include <Library/BaseMemoryLib.h>
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typedef struct {
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EFI_LOCK RtcLock;
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UINT16 SavedTimeZone;
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UINT8 Daylight;
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} PC_RTC_MODULE_GLOBALS;
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#define PCAT_RTC_ADDRESS_REGISTER 0x70
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#define PCAT_RTC_DATA_REGISTER 0x71
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//
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// Dallas DS12C887 Real Time Clock
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//
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#define RTC_ADDRESS_SECONDS 0 // R/W Range 0..59
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#define RTC_ADDRESS_SECONDS_ALARM 1 // R/W Range 0..59
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#define RTC_ADDRESS_MINUTES 2 // R/W Range 0..59
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#define RTC_ADDRESS_MINUTES_ALARM 3 // R/W Range 0..59
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#define RTC_ADDRESS_HOURS 4 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
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#define RTC_ADDRESS_HOURS_ALARM 5 // R/W Range 1..12 or 0..23 Bit 7 is AM/PM
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#define RTC_ADDRESS_DAY_OF_THE_WEEK 6 // R/W Range 1..7
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#define RTC_ADDRESS_DAY_OF_THE_MONTH 7 // R/W Range 1..31
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#define RTC_ADDRESS_MONTH 8 // R/W Range 1..12
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#define RTC_ADDRESS_YEAR 9 // R/W Range 0..99
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#define RTC_ADDRESS_REGISTER_A 10 // R/W[0..6] R0[7]
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#define RTC_ADDRESS_REGISTER_B 11 // R/W
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#define RTC_ADDRESS_REGISTER_C 12 // RO
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#define RTC_ADDRESS_REGISTER_D 13 // RO
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#define RTC_ADDRESS_CENTURY 50 // R/W Range 19..20 Bit 8 is R/W
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//
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// Date and time initial values.
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// They are used if the RTC values are invalid during driver initialization
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//
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#define RTC_INIT_SECOND 0
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#define RTC_INIT_MINUTE 0
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#define RTC_INIT_HOUR 0
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#define RTC_INIT_DAY 1
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#define RTC_INIT_MONTH 1
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#define RTC_INIT_YEAR 2001
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//
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// Register initial values
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//
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#define RTC_INIT_REGISTER_A 0x26
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#define RTC_INIT_REGISTER_B 0x02
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#define RTC_INIT_REGISTER_D 0x0
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#pragma pack(1)
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//
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// Register A
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//
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typedef struct {
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UINT8 RS : 4; // Rate Selection Bits
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UINT8 DV : 3; // Divisor
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UINT8 UIP : 1; // Update in progress
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} RTC_REGISTER_A_BITS;
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typedef union {
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RTC_REGISTER_A_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_A;
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//
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// Register B
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//
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typedef struct {
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UINT8 DSE : 1; // 0 - Daylight saving disabled 1 - Daylight savings enabled
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UINT8 MIL : 1; // 0 - 12 hour mode 1 - 24 hour mode
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UINT8 DM : 1; // 0 - BCD Format 1 - Binary Format
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UINT8 SQWE : 1; // 0 - Disable SQWE output 1 - Enable SQWE output
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UINT8 UIE : 1; // 0 - Update INT disabled 1 - Update INT enabled
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UINT8 AIE : 1; // 0 - Alarm INT disabled 1 - Alarm INT Enabled
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UINT8 PIE : 1; // 0 - Periodic INT disabled 1 - Periodic INT Enabled
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UINT8 SET : 1; // 0 - Normal operation. 1 - Updates inhibited
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} RTC_REGISTER_B_BITS;
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typedef union {
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RTC_REGISTER_B_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_B;
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//
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// Register C
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//
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typedef struct {
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UINT8 Reserved : 4; // Read as zero. Can not be written.
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UINT8 UF : 1; // Update End Interrupt Flag
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UINT8 AF : 1; // Alarm Interrupt Flag
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UINT8 PF : 1; // Periodic Interrupt Flag
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UINT8 IRQF : 1; // Iterrupt Request Flag = PF & PIE | AF & AIE | UF & UIE
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} RTC_REGISTER_C_BITS;
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typedef union {
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RTC_REGISTER_C_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_C;
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//
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// Register D
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//
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typedef struct {
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UINT8 Reserved : 7; // Read as zero. Can not be written.
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UINT8 VRT : 1; // Valid RAM and Time
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} RTC_REGISTER_D_BITS;
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typedef union {
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RTC_REGISTER_D_BITS Bits;
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UINT8 Data;
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} RTC_REGISTER_D;
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#pragma pack()
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EFI_STATUS
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PcRtcInit (
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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PcRtcSetTime (
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IN EFI_TIME *Time,
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Time - TODO: add argument description
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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PcRtcGetTime (
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OUT EFI_TIME *Time,
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IN EFI_TIME_CAPABILITIES *Capabilities,
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Time - TODO: add argument description
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Capabilities - TODO: add argument description
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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EFIAPI
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PcRtcSetWakeupTime (
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IN BOOLEAN Enable,
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OUT EFI_TIME *Time,
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Enable - TODO: add argument description
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Time - TODO: add argument description
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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EFIAPI
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PcRtcGetWakeupTime (
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OUT BOOLEAN *Enabled,
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OUT BOOLEAN *Pending,
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OUT EFI_TIME *Time,
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Enabled - TODO: add argument description
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Pending - TODO: add argument description
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Time - TODO: add argument description
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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EFIAPI
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InitializePcRtc (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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ImageHandle - TODO: add argument description
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SystemTable - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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RtcTimeFieldsValid (
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IN EFI_TIME *Time
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Time - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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UINT8
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DecimaltoBcd (
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IN UINT8 DecValue
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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DecValue - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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VOID
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ConvertEfiTimeToRtcTime (
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IN EFI_TIME *Time,
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IN RTC_REGISTER_B RegisterB,
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IN UINT8 *Century
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Time - TODO: add argument description
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RegisterB - TODO: add argument description
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Century - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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VOID
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ConvertRtcTimeToEfiTime (
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IN EFI_TIME *Time,
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IN RTC_REGISTER_B RegisterB
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Time - TODO: add argument description
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RegisterB - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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EFI_STATUS
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RtcWaitToUpdate (
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UINTN Timeout
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Timeout - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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UINT8
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RtcSaveContext (
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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VOID
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RtcRestoreContext (
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IN UINT8 SavedAddressRegister,
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IN PC_RTC_MODULE_GLOBALS *Global
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)
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/*++
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Routine Description:
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TODO: Add function description
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Arguments:
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SavedAddressRegister - TODO: add argument description
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Global - TODO: add argument description
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Returns:
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TODO: add return values
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--*/
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;
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#endif
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