/**
Issue self test command via IsaIo interface.
@return EFI_SUCCESS Success to do keyboard self testing.
@return others Fail to do keyboard self testing.
**/
EFI_STATUS
KbcSelfTest (
VOID
)
{
EFI_STATUS Status;
UINT8 Data;
//
// Keyboard controller self test
//
Status = Out8042Command (SELF_TEST);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Read return code
//
Status = In8042Data (&Data);
if (EFI_ERROR (Status)) {
return Status;
}
if (Data != 0x55) {
return EFI_DEVICE_ERROR;
}
//
// Set system flag
//
Status = Out8042Command (READ_CMD_BYTE);
if (EFI_ERROR (Status)) {
return Status;
}
Status = In8042Data (&Data);
if (EFI_ERROR (Status)) {
return Status;
}
Status = Out8042Command (WRITE_CMD_BYTE);
if (EFI_ERROR (Status)) {
return Status;
}
Data |= CMD_SYS_FLAG;
Status = Out8042Data (Data);
if (EFI_ERROR (Status)) {
return Status;
}
return EFI_SUCCESS;
}
/**
Issue command to check keyboard status.
@param KeyboardEnable return whether keyboard is enable.
@return Status of command issuing.
**/
EFI_STATUS
CheckKbStatus (
OUT BOOLEAN *KeyboardEnable
)
{
EFI_STATUS Status;
UINT8 Data;
//
// Send command to read KBC command byte
//
Status = Out8042Command (READ_CMD_BYTE);
if (EFI_ERROR (Status)) {
return Status;
}
Status = In8042Data (&Data);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Check keyboard enable or not
//
if ((Data & CMD_KB_STS) == CMD_KB_DIS) {
*KeyboardEnable = FALSE;
} else {
*KeyboardEnable = TRUE;
}
return EFI_SUCCESS;
}
/**
Issue command to enable keyboard AUX functionality.
@return Status of command issuing.
**/
EFI_STATUS
KbcEnableAux (
VOID
)
{
//
// Send 8042 enable mouse command
//
return Out8042Command (ENABLE_AUX);
}
/**
Issue command to disable keyboard.
@return Status of command issuing.
**/
EFI_STATUS
KbcDisableKb (
VOID
)
{
//
// Send 8042 disable keyboard command
//
return Out8042Command (DISABLE_KB);
}
/**
Issue command to enable keyboard.
@param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL
@return Status of command issuing.
**/
EFI_STATUS
KbcEnableKb (
VOID
)
{
//
// Send 8042 enable keyboard command
//
return Out8042Command (ENABLE_KB);
}
/**
Issue command to disable keyboard AUX functionality.
@param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL
@return Status of command issuing.
**/
EFI_STATUS
KbcDisableAux (
VOID
)
{
//
// Send 8042 disable mouse command
//
return Out8042Command (DISABLE_AUX);
}
/**
Issue command to enable keyboard AUX functionality.
@param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL
@return Status of command issuing.
**/
EFI_STATUS
KbcEnableAux (
IN EFI_ISA_IO_PROTOCOL *IsaIo
)
{
//
// Send 8042 enable mouse command
//
return Out8042Command (IsaIo, ENABLE_AUX);
}
/**
Issue command to disable keyboard.
@param IsaIo Pointer to instance of EFI_ISA_IO_PROTOCOL
@return Status of command issuing.
**/
EFI_STATUS
KbcDisableKb (
IN EFI_ISA_IO_PROTOCOL *IsaIo
)
{
//
// Send 8042 disable keyboard command
//
return Out8042Command (IsaIo, DISABLE_KB);
}