runtimelib.c

来自「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是」· C语言 代码 · 共 1,318 行 · 第 1/3 页

  ReturnReg = EfiCallEsalService (&Guid, GetWakeupTime, (UINT64) Enabled, (UINT64) Pending, (UINT64) Time, 0, 0, 0, 0);
  return ReturnReg.Status;
}

EFI_STATUS
EfiSetWakeupTime (
  IN BOOLEAN        Enable,
  IN EFI_TIME       *Time
  )
/*++

Routine Description:

  Sets the system wakeup alarm clock time.

Arguments:

  Enable  - Enable or disable the wakeup alarm.
  Time    - If Enable is TRUE, the time to set the wakeup alarm for.
            If Enable is FALSE, then this parameter is optional, and may be NULL.

Returns:

  Status code

--*/
{
  SAL_RETURN_REGS ReturnReg;

  EFI_GUID Guid = EFI_EXTENDED_SAL_RTC_SERVICES_PROTOCOL_GUID;

  ReturnReg = EfiCallEsalService (&Guid, SetWakeupTime, (UINT64) Enable, (UINT64) Time, 0, 0, 0, 0, 0);
  return ReturnReg.Status;
}



//
//  Base IO Services
//
EFI_STATUS
EfiIoRead (
  IN     EFI_CPU_IO_PROTOCOL_WIDTH  Width,
  IN     UINT64                     Address,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:
  Perform an IO read into Buffer.

Arguments:
  Width   - Width of read transaction, and repeat operation to use
  Address - IO address to read
  Count   - Number of times to read the IO address.
  Buffer  - Buffer to read data into. size is Width * Count

Returns:
  Status code

--*/
{

  SAL_RETURN_REGS ReturnReg;

  EFI_GUID Guid = EFI_EXTENDED_SAL_BASE_IO_SERVICES_PROTOCOL_GUID;

  ReturnReg = EfiCallEsalService (&Guid, IoRead, (UINT64) Width, Address, Count, (UINT64) Buffer, 0, 0, 0);

  return ReturnReg.Status;

}

EFI_STATUS
EfiIoWrite (
  IN     EFI_CPU_IO_PROTOCOL_WIDTH  Width,
  IN     UINT64                     Address,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:
  Perform an IO write into Buffer.

Arguments:
  Width   - Width of write transaction, and repeat operation to use
  Address - IO address to write
  Count   - Number of times to write the IO address.
  Buffer  - Buffer to write data from. size is Width * Count

Returns:
  Status code

--*/
{

  SAL_RETURN_REGS ReturnReg;

  EFI_GUID Guid = EFI_EXTENDED_SAL_BASE_IO_SERVICES_PROTOCOL_GUID;

  ReturnReg = EfiCallEsalService (&Guid, IoWrite, (UINT64) Width, Address, Count, (UINT64) Buffer, 0, 0, 0);

  return ReturnReg.Status;

}

EFI_STATUS
EfiMemRead (
  IN     EFI_CPU_IO_PROTOCOL_WIDTH  Width,
  IN     UINT64                     Address,
  IN     UINTN                      Count,
  IN  OUT VOID                      *Buffer
  )
/*++

Routine Description:
  Perform a Memory mapped IO read into Buffer.

Arguments:
  Width   - Width of each read transaction.
  Address - Memory mapped IO address to read
  Count   - Number of Width quanta to read
  Buffer  - Buffer to read data into. size is Width * Count

Returns:
  Status code

--*/
{

  SAL_RETURN_REGS ReturnReg;

  EFI_GUID Guid = EFI_EXTENDED_SAL_BASE_IO_SERVICES_PROTOCOL_GUID;

  ReturnReg = EfiCallEsalService (&Guid, MemRead, (UINT64) Width, Address, Count, (UINT64) Buffer, 0, 0, 0);

  return ReturnReg.Status;

}

EFI_STATUS
EfiMemWrite (
  IN     EFI_CPU_IO_PROTOCOL_WIDTH  Width,
  IN     UINT64                     Address,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:
  Perform a memory mapped IO write into Buffer.

Arguments:
  Width   - Width of write transaction, and repeat operation to use
  Address - IO address to write
  Count   - Number of times to write the IO address.
  Buffer  - Buffer to write data from. size is Width * Count

Returns:
  Status code

--*/
{

  SAL_RETURN_REGS ReturnReg;

  EFI_GUID Guid = EFI_EXTENDED_SAL_BASE_IO_SERVICES_PROTOCOL_GUID;

  ReturnReg = EfiCallEsalService (&Guid, MemWrite, (UINT64) Width, Address, Count, (UINT64) Buffer, 0, 0, 0);

  return ReturnReg.Status;

}


#define EFI_PCI_ADDRESS_IPF(_seg, _bus, _devfunc, _reg) \
    (((_seg) << 24) | ((_bus) << 16) | ((_devfunc) << 8) | (_reg)) & 0xFFFFFFFF

//
//  PCI Class Functions
//
UINT8
PciRead8 (
  UINT8   Segment,
  UINT8   Bus,
  UINT8   DevFunc,
  UINT8   Register
  )
/*++

Routine Description:
  Perform an one byte PCI config cycle read

Arguments:
  Segment   - PCI Segment ACPI _SEG
  Bus       - PCI Bus
  DevFunc   - PCI Device(7:3) and Func(2:0)
  Register  - PCI config space register

Returns:
  Data read from PCI config space

--*/
{
  EFI_GUID        Guid = EFI_EXTENDED_SAL_PCI_SERVICES_PROTOCOL_GUID;
  UINT64          Address;
  SAL_RETURN_REGS Return;

  Address = EFI_PCI_ADDRESS_IPF (Segment, Bus, DevFunc, Register);
  Return  = EfiCallEsalService (&Guid, SalPciConfigRead, Address, 1, 0, 0, 0, 0, 0);

  return (UINT8) Return.r9;
}


UINT16
PciRead16 (
  UINT8   Segment,
  UINT8   Bus,
  UINT8   DevFunc,
  UINT8   Register
  )
/*++

Routine Description:
  Perform an two byte PCI config cycle read

Arguments:
  Segment   - PCI Segment ACPI _SEG
  Bus       - PCI Bus
  DevFunc   - PCI Device(7:3) and Func(2:0)
  Register  - PCI config space register

Returns:
  Data read from PCI config space

--*/
{
  EFI_GUID        Guid = EFI_EXTENDED_SAL_PCI_SERVICES_PROTOCOL_GUID;
  UINT64          Address;
  SAL_RETURN_REGS Return;

  Address = EFI_PCI_ADDRESS_IPF (Segment, Bus, DevFunc, Register);
  Return  = EfiCallEsalService (&Guid, SalPciConfigRead, Address, 2, 0, 0, 0, 0, 0);

  return (UINT16) Return.r9;
}

UINT32
PciRead32 (
  UINT8   Segment,
  UINT8   Bus,
  UINT8   DevFunc,
  UINT8   Register
  )
/*++

Routine Description:
  Perform an four byte PCI config cycle read

Arguments:
  Segment   - PCI Segment ACPI _SEG
  Bus       - PCI Bus
  DevFunc   - PCI Device(7:3) and Func(2:0)
  Register  - PCI config space register

Returns:
  Data read from PCI config space

--*/
{
  EFI_GUID        Guid = EFI_EXTENDED_SAL_PCI_SERVICES_PROTOCOL_GUID;
  UINT64          Address;
  SAL_RETURN_REGS Return;

  Address = EFI_PCI_ADDRESS_IPF (Segment, Bus, DevFunc, Register);
  Return  = EfiCallEsalService (&Guid, SalPciConfigRead, Address, 4, 0, 0, 0, 0, 0);

  return (UINT32) Return.r9;
}

VOID
PciWrite8 (
  UINT8   Segment,
  UINT8   Bus,
  UINT8   DevFunc,
  UINT8   Register,
  UINT8   Data
  )
/*++

Routine Description:
  Perform an one byte PCI config cycle write

Arguments:
  Segment   - PCI Segment ACPI _SEG
  Bus       - PCI Bus
  DevFunc   - PCI Device(7:3) and Func(2:0)
  Register  - PCI config space register
  Data      - Data to write

Returns:
  NONE

--*/
{
  EFI_GUID        Guid = EFI_EXTENDED_SAL_PCI_SERVICES_PROTOCOL_GUID;
  UINT64    Address;

  Address = EFI_PCI_ADDRESS_IPF (Segment, Bus, DevFunc, Register);
  EfiCallEsalService (&Guid, SalPciConfigWrite, Address, 1, Data, 0, 0, 0, 0);
}

VOID
PciWrite16 (
  UINT8   Segment,
  UINT8   Bus,
  UINT8   DevFunc,
  UINT8   Register,
  UINT16  Data
  )
/*++

Routine Description:
  Perform an two byte PCI config cycle write

Arguments:
  Segment   - PCI Segment ACPI _SEG
  Bus       - PCI Bus
  DevFunc   - PCI Device(7:3) and Func(2:0)
  Register  - PCI config space register
  Data      - Data to write

Returns:
  None.

--*/
{
  EFI_GUID        Guid = EFI_EXTENDED_SAL_PCI_SERVICES_PROTOCOL_GUID;
  UINT64    Address;

  Address = EFI_PCI_ADDRESS_IPF (Segment, Bus, DevFunc, Register);
  EfiCallEsalService (&Guid, SalPciConfigWrite, Address, 2, Data, 0, 0, 0, 0);
}

VOID
PciWrite32 (
  UINT8   Segment,
  UINT8   Bus,
  UINT8   DevFunc,
  UINT8   Register,
  UINT32  Data
  )
/*++

Routine Description:
  Perform an four byte PCI config cycle write

Arguments:
  Segment   - PCI Segment ACPI _SEG
  Bus       - PCI Bus
  DevFunc   - PCI Device(7:3) and Func(2:0)
  Register  - PCI config space register
  Data      - Data to write

Returns:
  NONE

--*/
{
  EFI_GUID  Guid = EFI_EXTENDED_SAL_PCI_SERVICES_PROTOCOL_GUID;
  UINT64    Address;

  Address = EFI_PCI_ADDRESS_IPF (Segment, Bus, DevFunc, Register);
  EfiCallEsalService (&Guid, SalPciConfigWrite, Address, 4, Data, 0, 0, 0, 0);
}

//
// Stall class functions
//
VOID
EfiStall (
  IN  UINTN   Microseconds
  )
/*++

Routine Description:
 Delay for at least the request number of microseconds

Arguments:
  Microseconds - Number of microseconds to delay.

Returns:
  NONE

--*/
{
  EFI_GUID        Guid = EFI_EXTENDED_SAL_STALL_SERVICES_PROTOCOL_GUID;

  if (EfiAtRuntime ()) {
    EfiCallEsalService (&Guid, Stall, Microseconds, 4, 0, 0, 0, 0, 0);
  } else {
    gBS->Stall (Microseconds);
  }
}
//
// Cache Flush Routine.
//
EFI_STATUS
EfiCpuFlushCache (
  IN EFI_PHYSICAL_ADDRESS          Start,
  IN UINT64                        Length
  )
/*++

Routine Description:

  Flush cache with specified range.

Arguments:

  Start   - Start address
  Length  - Length in bytes

Returns:

  Status code
  
  EFI_SUCCESS - success

--*/
{
  SalFlushCache (Start, Length);
  return EFI_SUCCESS;
}