Intel Extensible Firmware Interface - Manual (Page 298)

Extensible Firmware Interface Specification
10-4 12/01/02 Version 1.10
10.2 Simple Input Protocol
The Simple Input protocol defines the minimum input required to support the ConsoleIn device.
SIMPLE_INPUT
Summary
This protocol is used to obtain input from the ConsoleIn device. The EFI specification requires
that the SIMPLE_INPUT protocol support the same languages as the corresponding
SIMPLE_TEXT_OUTPUT protocol.
GUID
#define SIMPLE_INPUT_PROTOCOL \
{ 387477c1-69c7-11d2-8e39-00a0c969723b }
Protocol Interface Structure
typedef struct _SIMPLE_INPUT_INTERFACE {
EFI_INPUT_RESET Reset;
EFI_INPUT_READ_KEY ReadKeyStroke;
EFI_EVENT WaitForKey;
} SIMPLE_INPUT_INTERFACE;
Parameters
Reset Reset the ConsoleIn device. See Reset() .
ReadKeyStroke Returns the next input character. See ReadKeyStroke() .
WaitForKey Event to use with WaitForEvent() to wait for a key to be available.
Description
The SIMPLE_INPUT protocol is used on the ConsoleIn device. It is the minimum required
protocol for ConsoleIn .