SmmS3CommunicationInfoGuid.h

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#ifndef PAYLOAD_S3_COMMUNICATION_GUID_H_
#define PAYLOAD_S3_COMMUNICATION_GUID_H_
 
extern EFI_GUID  gS3CommunicationGuid;
 
#pragma pack(1)
 
typedef struct {
  EFI_SMRAM_DESCRIPTOR    CommBuffer;
  BOOLEAN                 PldAcpiS3Enable;
} PLD_S3_COMMUNICATION;
 
 
typedef struct {
  UINT32    ApicId;
  UINT32    SmmBase;
} CPU_SMMBASE;
 
typedef struct {
  UINT8          SwSmiData;
  UINT8          SwSmiTriggerValue;
  UINT16         Reserved;
  UINT32         CpuCount;
  CPU_SMMBASE    SmmBase[0];
} SMM_S3_INFO;
 
//
// Payload would save this structure to S3 communication area in normal boot.
// In S3 path, bootloader need restore SMM base and writie IO port 0xB2 with SwSmiTriggerValue
// to trigger SMI to let payload to restore S3.
//
typedef struct {
  EFI_HOB_GUID_TYPE    Header;
  SMM_S3_INFO          S3Info;
} PLD_TO_BL_SMM_INFO;
 
#pragma pack()
 
#endif