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