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/** @file
Basic serial IO abstaction for GDB
Copyright (c) 2008-2009, Apple Inc. All rights reserved.
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/GdbSerialLib.h>
#include <Library/PcdLib.h>
#include <Library/IoLib.h>
#include <Library/DebugLib.h>
#include <Library/OmapLib.h>
#include <Omap3530/Omap3530.h>
RETURN_STATUS
EFIAPI
GdbSerialLibConstructor (
VOID
)
{
return RETURN_SUCCESS;
}
RETURN_STATUS
EFIAPI
GdbSerialInit (
IN UINT64 BaudRate,
IN UINT8 Parity,
IN UINT8 DataBits,
IN UINT8 StopBits
)
{
return RETURN_SUCCESS;
}
BOOLEAN
EFIAPI
GdbIsCharAvailable (
VOID
)
{
UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
if ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_NOT_EMPTY) {
return TRUE;
} else {
return FALSE;
}
}
CHAR8
EFIAPI
GdbGetChar (
VOID
)
{
UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
UINT32 RBR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_RBR_REG;
CHAR8 Char;
while ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_EMPTY);
Char = MmioRead8(RBR);
return Char;
}
VOID
EFIAPI
GdbPutChar (
IN CHAR8 Char
)
{
UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
UINT32 THR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_THR_REG;
while ((MmioRead8(LSR) & UART_LSR_TX_FIFO_E_MASK) == UART_LSR_TX_FIFO_E_NOT_EMPTY);
MmioWrite8(THR, Char);
}
VOID
GdbPutString (
IN CHAR8 *String
)
{
while (*String != '\0') {
GdbPutChar (*String);
String++;
}
}
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