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/** @file
GUID used for Watchdog Timer status in the HOB list.
Copyright (c) 2008 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#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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