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#ifndef _EFI_SER_H
#define _EFI_SER_H
/*++
Copyright (c) 1998 Intel Corporation
Module Name:
efiser.h
Abstract:
EFI serial protocol
Revision History
--*/
//
// Serial protocol
//
#define EFI_SERIAL_IO_PROTOCOL_GUID \
{ 0xBB25CF6F, 0xF1D4, 0x11D2, {0x9A, 0x0C, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0xFD} }
#define SERIAL_IO_PROTOCOL EFI_SERIAL_IO_PROTOCOL_GUID
INTERFACE_DECL(_EFI_SERIAL_IO_PROTOCOL);
typedef enum {
DefaultParity,
NoParity,
EvenParity,
OddParity,
MarkParity,
SpaceParity
} EFI_PARITY_TYPE;
typedef enum {
DefaultStopBits,
OneStopBit, // 1 stop bit
OneFiveStopBits, // 1.5 stop bits
TwoStopBits // 2 stop bits
} EFI_STOP_BITS_TYPE;
#define EFI_SERIAL_CLEAR_TO_SEND 0x0010 // RO
#define EFI_SERIAL_DATA_SET_READY 0x0020 // RO
#define EFI_SERIAL_RING_INDICATE 0x0040 // RO
#define EFI_SERIAL_CARRIER_DETECT 0x0080 // RO
#define EFI_SERIAL_REQUEST_TO_SEND 0x0002 // WO
#define EFI_SERIAL_DATA_TERMINAL_READY 0x0001 // WO
#define EFI_SERIAL_INPUT_BUFFER_EMPTY 0x0100 // RO
#define EFI_SERIAL_OUTPUT_BUFFER_EMPTY 0x0200 // RO
#define EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE 0x1000 // RW
#define EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE 0x2000 // RW
#define EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE 0x4000 // RW
typedef
EFI_STATUS
(EFIAPI *EFI_SERIAL_RESET) (
IN struct _EFI_SERIAL_IO_PROTOCOL *This
);
typedef
EFI_STATUS
(EFIAPI *EFI_SERIAL_SET_ATTRIBUTES) (
IN struct _EFI_SERIAL_IO_PROTOCOL *This,
IN UINT64 BaudRate,
IN UINT32 ReceiveFifoDepth,
IN UINT32 Timeout,
IN EFI_PARITY_TYPE Parity,
IN UINT8 DataBits,
IN EFI_STOP_BITS_TYPE StopBits
);
typedef
EFI_STATUS
(EFIAPI *EFI_SERIAL_SET_CONTROL_BITS) (
IN struct _EFI_SERIAL_IO_PROTOCOL *This,
IN UINT32 Control
);
typedef
EFI_STATUS
(EFIAPI *EFI_SERIAL_GET_CONTROL_BITS) (
IN struct _EFI_SERIAL_IO_PROTOCOL *This,
OUT UINT32 *Control
);
typedef
EFI_STATUS
(EFIAPI *EFI_SERIAL_WRITE) (
IN struct _EFI_SERIAL_IO_PROTOCOL *This,
IN OUT UINTN *BufferSize,
IN VOID *Buffer
);
typedef
EFI_STATUS
(EFIAPI *EFI_SERIAL_READ) (
IN struct _EFI_SERIAL_IO_PROTOCOL *This,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
);
typedef struct {
UINT32 ControlMask;
// current Attributes
UINT32 Timeout;
UINT64 BaudRate;
UINT32 ReceiveFifoDepth;
UINT32 DataBits;
UINT32 Parity;
UINT32 StopBits;
} SERIAL_IO_MODE;
#define SERIAL_IO_INTERFACE_REVISION 0x00010000
typedef struct _EFI_SERIAL_IO_PROTOCOL {
UINT32 Revision;
EFI_SERIAL_RESET Reset;
EFI_SERIAL_SET_ATTRIBUTES SetAttributes;
EFI_SERIAL_SET_CONTROL_BITS SetControl;
EFI_SERIAL_GET_CONTROL_BITS GetControl;
EFI_SERIAL_WRITE Write;
EFI_SERIAL_READ Read;
SERIAL_IO_MODE *Mode;
} EFI_SERIAL_IO_PROTOCOL;
typedef struct _EFI_SERIAL_IO_PROTOCOL _SERIAL_IO_INTERFACE;
typedef EFI_SERIAL_IO_PROTOCOL SERIAL_IO_INTERFACE;
#endif
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