mirror of https://github.com/acidanthera/audk.git
135 lines
5.0 KiB
C
135 lines
5.0 KiB
C
/*++
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Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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Module Name:
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HwWatchdogTimerHob.h
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Abstract:
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GUID used for Watchdog Timer status in the HOB list.
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--*/
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#ifndef _EFI_WATCHDOG_TIMER_HOB_GUID_H_
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#define _EFI_WATCHDOG_TIMER_HOB_GUID_H_
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#define EFI_WATCHDOG_TIMER_HOB_GUID \
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{ 0x226cd3f, 0x69b5, 0x4150, 0xac, 0xbe, 0xbf, 0xbf, 0x18, 0xe3, 0x3, 0xd5 }
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#define EFI_WATCHDOG_TIMER_DEFINITION_HOB_GUID \
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{ 0xd29302b0, 0x11ba, 0x4073, 0xa2, 0x27, 0x53, 0x8d, 0x25, 0x42, 0x70, 0x9f }
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typedef enum {
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HWWD_NONE,
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HWWD_TIMER_EXPIRED,
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HWWD_SPONTANEOUS_REBOOT,
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HWWD_FORCED_TIMEOUT
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} HW_WATCHDOG_TIMEOUT;
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typedef struct {
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HW_WATCHDOG_TIMEOUT TimeoutStatus;
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} HW_WATCHDOG_INFO;
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//
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// Watchdog timer action values.
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//
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#define WDT_ACTION_RESET 0x01 // reload/reset timer
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#define WDT_ACTION_QUERY_CURRENT_VALUE 0x04 // get current value // DON'T NEED FOR OVERCLOCK UTILITY
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#define WDT_ACTION_QUERY_COUNTDOWN_PERIOD 0x05 // get countdown period
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#define WDT_ACTION_SET_COUNTDOWN_PERIOD 0x06 // set countdown period
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#define WDT_ACTION_QUERY_RUNNING_STATE 0x08 // query if running
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#define WDT_ACTION_SET_RUNNING_STATE 0x09 // start timer
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#define WDT_ACTION_QUERY_STOPPED_STATE 0x0A // query if stopped
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#define WDT_ACTION_SET_STOPPED_STATE 0x0B // stop timer
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#define WDT_ACTION_QUERY_STATUS 0x20 // is current boot cause by wdt timeout?
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#define WDT_ACTION_SET_STATUS 0x21 // resets wdt status bit
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//
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// Watchdog timer instruction values.
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//
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#define WDT_INSTR_VALUE_MASK 0x03 // Mask for just the value
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#define WDT_INSTR_READ_CMP_VALUE 0x00 // Read / compare value
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#define WDT_INSTR_READ_COUNTDOWN 0x01 // read countdown value
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#define WDT_INSTR_WRITE_VALUE 0x02 // Write value
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#define WDT_INSTR_WRITE_COUNTDOWN 0x03 // write countdown value
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#define WDT_INSTR_PRESERVE_REG 0x80 // preserve reg; used in Write Value / Write Countdown
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#define WDT_INSTR_WRITE_VALUE_PRES (0x02 | WDT_INSTR_PRESERVE_REG) // Write value with preserve
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#define WDT_INSTR_WRITE_COUNTDOWN_PRES (0x03 | WDT_INSTR_PRESERVE_REG) // write countdown value with preserve
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//
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// The Generic Address Structure is defined in the ACPI Specification and should only be
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// changed to match updated revisions of that specification. The GAS_ADDRESS_SPACE and
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// GAS_ACCESS_SIZE enumerations are also defined by the ACPI Specification.
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//
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typedef enum {
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GAS_SYSTEM_MEMORY,
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GAS_SYSTEM_IO,
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GAS_PCI_CONFIG_SPACE,
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GAS_EMBEDDED_CONTROLLER,
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GAS_SMBUS
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} GAS_ADDRESS_SPACE;
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typedef enum {
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GAS_UNDEFINED,
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GAS_BYTE_ACCESS,
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GAS_WORD_ACCESS,
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GAS_DWORD_ACCESS,
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GAS_QWORD_ACCESS
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} GAS_ACCESS_SIZE;
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#pragma pack(1)
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typedef struct {
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UINT8 AddressSpaceId;
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UINT8 RegisterBitWidth;
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UINT8 RegisterBitOffset;
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UINT8 AccessSize;
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UINT64 Address;
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} GENERIC_ADDRESS_STRUCTURE;
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//
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// GAS_SYSTEM_MEMORY - When used as the AddressSpaceId, the 64-bit physical memory address
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// of the register. 32-bit platforms must have the high DWORD set to 0.
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// GAS_SYSTEM_IO - The 64-bit I/O address of the register. 32-bit platforms must have
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// the high DWORD set to 0.
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// GAS_PCI_CONFIG_SPACE - PCI Configuration space addresses must be confined to devices on PCI
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// Sepment Group 0, Bus 0. This restriction exists to accommodate access
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// to fixed hardware prior to PCI bus enumeration. The format of addresses
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// are defined as follows:
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// Highest WORD: Reserved and must be -0-
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// ... PCI Device number on bus 0
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// ... PCI Function number
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// Lowest WORD: Offset in the configuration space header.
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//
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typedef struct {
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UINT8 WdAction;
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UINT8 Flag;
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UINT16 Res;
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GENERIC_ADDRESS_STRUCTURE GenericAddressStructures;
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UINT32 Value;
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UINT32 Mask;
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} WD_INSTRUCTION;
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typedef struct {
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UINT32 TimerPeriod;
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UINT32 MaxTimerCount;
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UINT32 MinTimerCount;
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UINT16 InstructionCount;
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WD_INSTRUCTION ActionDefinitions[1];
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} WD_HOB_DEFINITION;
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#pragma pack()
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extern EFI_GUID gWatchdogTimerHobGuid;
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extern EFI_GUID gWatchdogTimerDefinitionHobGuid;
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#endif // _EFI_WATCHDOG_TIMER_HOB_GUID_H_
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