/** @file
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Basic serial IO abstaction for GDB
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Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi.h>
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#include <Library/GdbSerialLib.h>
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#include <Library/PcdLib.h>
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#include <Library/IoLib.h>
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#include <Library/DebugLib.h>
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#include <Library/OmapLib.h>
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#include <Omap3530/Omap3530.h>
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RETURN_STATUS
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EFIAPI
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GdbSerialLibConstructor (
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VOID
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)
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{
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return RETURN_SUCCESS;
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}
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RETURN_STATUS
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EFIAPI
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GdbSerialInit (
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IN UINT64 BaudRate,
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IN UINT8 Parity,
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IN UINT8 DataBits,
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IN UINT8 StopBits
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)
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{
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return RETURN_SUCCESS;
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}
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BOOLEAN
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EFIAPI
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GdbIsCharAvailable (
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VOID
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)
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{
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UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
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if ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_NOT_EMPTY) {
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return TRUE;
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} else {
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return FALSE;
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}
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}
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CHAR8
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EFIAPI
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GdbGetChar (
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VOID
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)
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{
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UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
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UINT32 RBR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_RBR_REG;
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CHAR8 Char;
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while ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_EMPTY);
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Char = MmioRead8(RBR);
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return Char;
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}
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VOID
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EFIAPI
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GdbPutChar (
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IN CHAR8 Char
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)
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{
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UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
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UINT32 THR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_THR_REG;
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while ((MmioRead8(LSR) & UART_LSR_TX_FIFO_E_MASK) == UART_LSR_TX_FIFO_E_NOT_EMPTY);
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MmioWrite8(THR, Char);
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}
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VOID
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GdbPutString (
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IN CHAR8 *String
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)
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{
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while (*String != '\0') {
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GdbPutChar (*String);
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String++;
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}
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}
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